KR100570704B1 - Manufacturing device of oval duct - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing an oval duct, which is formed by a series of processes in which reinforcing grooves are formed on an outer surface of the plate material supplied from a reel, and the both ends are joined to each other after the plate is bent in an elliptical shape. The present invention relates to an apparatus for manufacturing an oval duct such that the production of the oval duct is performed mechanically. The present invention provides a strip unit for supplying a strip, and a forming groove corresponding to the forming groove and a forming protrusion corresponding to the forming groove in a direction perpendicular to the conveying direction of the strip so that reinforcing grooves are formed at regular intervals in the strip conveyed from the strip unit. Reinforcing groove forming bending unit comprising a pair of upper and lower primary bending rollers formed on the outer diameter surface of the roller of the roller, and pressing the two places of the strip drawn out from the primary bending roller to bend both sides of the strip A first bending unit including a bending roller rotatably installed in the feeding direction of the strip and a rotating shaft having a groove corresponding to the bending roller, and both bent portions of the strip drawn out from the first bending unit to be inwardly elliptical. A second bending unit including a pair of left and right bending rollers having grooves formed thereon to form a groove; A joining unit including a plurality of upper and lower pairs of bending rollers which are continuously installed where both ends of the strip are joined to pass the second bending unit to join the both ends of the strip and the grooves having different shapes; A pair of left and right straightening rollers formed with grooves for conveying the strips in close contact with both outer surfaces of the strips drawn out from the joining unit and at least one straightening member that is in close contact with both inner surfaces of the strips and rotates about an axis; And a cutting unit for cutting a strip drawn from the straightening unit and a calibration unit comprising a.

Oval duct, bending roller, seam welding, straightening unit, joining unit

Description

Oval duct manufacturing equipment {manufacturing device of oval duct}

1 is a side view showing an oval duct manufacturing apparatus according to the present invention;

Figure 2 is a side view showing a bending unit for forming a reinforcement groove of the apparatus for producing an oval duct according to the present invention;

Figure 3 is a front view showing a first bending unit of the oval duct manufacturing apparatus according to the present invention,

Figure 4 is a front view showing a second bending unit of the oval duct manufacturing apparatus according to the present invention,

5 is a front view showing a pressurizing unit of the oval duct manufacturing apparatus according to the present invention,

Figure 6 is a perspective view showing a bonding unit of the oval duct manufacturing apparatus according to the present invention,

Figure 7a is a front view showing a first bending roller of the bonding unit of the oval duct manufacturing apparatus according to the present invention,

Figure 7b is a front view showing a second bending roller of the bonding unit of the oval duct manufacturing apparatus according to the present invention,

Figure 7c is a front view showing a third bending roller of the bonding unit of the oval duct manufacturing apparatus according to the present invention,

7d is a front view showing a fourth bending roller of the bonding unit of the oval duct manufacturing apparatus according to the present invention;

 Figure 7e is a front view showing the finish bending roller of the bonding unit of the oval duct manufacturing apparatus according to the present invention,

8A is a front view showing an oval duct before being joined by a roller type bonding unit according to the present invention;

8B is a front view showing an oval duct after being bonded by a roller type bonding unit according to the present invention;

Figure 9 is a front view showing a calibration unit of the oval duct manufacturing apparatus according to the present invention.

※ Explanation of code for main part of drawing

1: strip unit 11: bending unit for reinforcing groove forming

13: molding groove 15: molding protrusion

21: first bending unit 31: second bending unit

41,71: pressurizing unit 51: joining unit

52: frame 54: first bending roller

55: second bending roller 56: third bending roller

57: 4th bending roller 57: finishing bending roller

59: Overlap prevention plate 61: Calibration unit

66: straightening member 81: cutting unit

82: sensor

The present invention relates to an apparatus for manufacturing an oval duct, and more particularly, a series of reinforcing grooves formed on an outer surface thereof through a plurality of rollers in which plate materials supplied from a reel are continuously installed, and both ends are joined after the plate material is bent in an oval shape. The present invention relates to an apparatus for manufacturing an oval duct, in which the production of the oval duct is mechanically performed.

In general, the duct is installed on the ceiling of the building to provide a ventilator to facilitate the ventilation of the room to represent a passage for discharging indoor air or supplying fresh air to the inside of the building, most of which is made of metal To form a thin iron plate made of round or square, but made to a certain length in order to facilitate the transport and installation was cut and installed according to the installation position directly at the installation place.

Conventional square ducts and circular ducts are fixed and installed in the interior of the building, in particular the ceiling, the ducts have a constant diameter has a problem that acts as an important factor to determine the height of the beam of the building to bring about spatial constraints. For example, in the case of a new building, it is designed considering the height of the room in consideration of the diameter of the duct, so that no big problem occurs in the installation, but the existing building is constructed by lowering the height of the beam without considering it. Since the ceiling height is also lowered, a wider diameter duct with sufficient ventilation capacity cannot be used, and a smaller diameter must be used. Therefore, the lack of indoor ventilation has caused a lot of harm to the human body.

Recently, in order to solve the above problems, conventional square ducts and circular ducts have been replaced by an oval duct having excellent space utilization, low heat loss and friction loss, and a smooth and refined aesthetic.

However, looking at the conventional Oval duct manufacturing technology, to manufacture the shape of the Oval duct by manual method or by using a simple manual manufacturing machine to proceed to a separate operation one by one for each process to reduce the work efficiency and There is a problem of decreased productivity and a problem of reduced product competitiveness due to deterioration of quality.

The Korean Utility Model Publication No. Relates to a device for manufacturing straight oval ducts, and Korean Utility Model Publication No. 95-16961 is a molding apparatus used in an intermediate process for changing a cross sectional shape of a circular duct and finally manufacturing it as a straight oval duct. The object of the present invention is to compress and expand the manufactured circular ducts by forming an oval duct into an ellipse so as not to overload the machine and smoothly inflating the duct during the manufacture of the final straight oval duct. The process of changing the shape in addition to the manufacturing process of the circular duct As a result of this addition, the manufacturing process is increased to increase the manufacturing cost, and there is a problem in that the manufacturing method according to the shape change of the circular duct to the oval duct cannot produce an accurate shape. In addition, in the method of manufacturing the oval duct by applying pressure to the circular duct, when attempting to manufacture an oval duct of a different length from the previously manufactured oval duct, the pressure to be applied must be newly set. There is a problem that it is difficult to fit the Oval duct of various specifications due to the single device because of this.

The present invention has been made to solve the above problems, the present invention is shaped by a continuous roller and the joint portion is joined by bending and pressing or seam welding by the continuous roller and the shape by the roller It is an object of the present invention to provide an oval duct manufacturing apparatus for mass production of an oval duct product of accurate shape and quality by manufacturing an oval duct by a series of processes of discharging and cutting while maintaining the same.

In order to achieve the above object, the oval duct manufacturing apparatus according to the present invention is formed in a direction perpendicular to the conveying direction of the strip so that a strip unit for supplying the strip and a reinforcing groove are formed at regular intervals in the strip conveyed from the strip unit. A bending unit for forming a reinforcement groove and a strip drawn out from the primary bending roller including a groove and a forming protrusion corresponding to the molding groove on the outer diameter surface of each roller. A first bending unit including a bending roller which is rotatably installed in a feeding direction of the strip for pressing both places to bend both sides of the strip, and a rotating shaft having grooves corresponding to the bending roller, and the first bending unit Grooves are formed to bend inwardly and bend both sides of the strip withdrawn from the In order to join the second bending unit including a pair of left and right bending rollers and both ends of the strip passing through the second bending unit, the grooves of different shapes are continuously installed where both ends of the strip are joined. A pair of left and right pairs of straightening rollers formed with a joining unit including a plurality of upper and lower pairs of bending rollers formed therein, and grooves for conveying the strips in close contact with both outer surfaces of the strips drawn out from the joining units. And a cutting unit including at least one straightening member which is in close contact with both inner surfaces and rotated about an axis, and a cutting unit which cuts a strip drawn from the straightening unit.

In addition, the bonding unit of the oval duct manufacturing apparatus according to the present invention may be configured to include a seam welder.

In addition, the upper and lower pair of rollers are installed between the second bending unit and the bonding unit to press the strip drawn out from the second bending unit in the upper and lower portions, and are installed between the calibration unit and the cutting unit. It is preferable to further include a pair of upper and lower rollers for pressing the strip drawn out from the calibration unit on the upper and lower portions.

In addition, the cutting unit preferably includes a sensor device for stopping the strip and a cutting blade to cut the strip by biting the cutting blade when detecting the strip.

In addition, one orthodontic member constituting the joining unit is composed of two hemisphere-shaped members coupled to the axis rotatably supported on the fixed plate, one of the two hemisphere-shaped member is located above the fixing plate and the rest One is located below the fixing plate, it is preferable that two calibration members are installed to correspond to each of the grooves of the left and right calibration rollers.

In addition, the joining unit may include a first bending roller for bending both ends of the strip to be joined in an oblique direction, an L-shaped second bending roller for bending the bent ends of the strip in a right angle direction, and a joint portion in which both ends of the strip are entangled. Z-shaped third bending roller for pressing, a fourth-shaped bending roller for pressing so that the joint portion is flat, and a finishing bending roller for forming a protrusion next to the joint portion so that the joint portion is not released It is desirable to.

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

1 is a block diagram of an apparatus for manufacturing an oval duct according to the present invention.

Oval duct manufacturing apparatus according to the present invention is largely strip unit (1), bending unit for reinforcing groove forming 11, the first bending unit 21 and the second bending unit (31), pressure unit (41, 71), It can be divided into a bonding unit 51, a calibration unit 61, and a cutting unit 81.

 The strip unit 1 is a device for supplying the strip 100 by releasing the strip 100 at a constant speed. The strip unit 1 is a coil of strip coil 4 formed on a shaft 3 horizontally installed on the base 2. It is a device that is inserted into the structure and the drive gear of the motor is meshed with the interlocking gear wound around the shaft (3) is a device to rotate the shaft by the rotation of the motor to release the strip 100 at a constant speed. Strip 100 is a galvanized iron plate galvanized iron plate.

2 shows a bending unit 11 for forming a reinforcement groove, and is composed of a pair of rollers 12 and 14 up and down. Forming grooves 13 are formed in the upper roller 12 and forming protrusions 15 are formed in the lower roller 14 so that the lower roller 14 is formed every time the two rollers 12 and 14 rotate one turn. As the protrusions 15 are inserted into the forming grooves 13 of the upper roller 12, a V-shaped reinforcement groove is formed in the plate. The upper roller 12 and the lower roller 14 are driven by driving means. The reason for forming the reinforcing grooves is that the flat upper and lower portions of the flat oval duct are relatively weak in pressure compared to the circular duct. The spacing of the reinforcing grooves formed in the plate may vary depending on the diameter of the rollers and the number of forming protrusions formed on the rollers. The denser the reinforcing grooves, the greater the reinforcing effect.

It is the first bending unit 21 and the second bending unit 31 to make the strip 100 in an elliptical shape, the first bending unit 21 and the upper pressure roller 22, as shown in FIG. It consists of a shaft 23 with a lower groove 24. The groove 24 of the lower shaft 23 is formed at a position corresponding to the two pressure rollers 22 installed on the upper portion, and the shaft 23 is driven by the driving means. The plate formed with the reinforcing groove enters between the upper press roller 22 and the lower shaft 23, and the pressing roller 22 presses the plate, and the pressed portion contacts the groove 24 of the shaft 23 while the pressing member 22 presses the plate. Curved to fit the shape of 24, both parts of the plate is lifted. Since the two pressure rollers 22 are movable left and right on the shaft, respectively, the distance between the two pressure rollers 22 is adjusted according to the desired odor duct.

FIG. 4 shows the second bending unit 31. The second bending unit 31 has rollers 32 and 34 having grooves 33 and 35 having curved surfaces in the middle portion of the second bending unit 31, respectively. It is installed to rotate. The curved strip 100 drawn out from the first bending unit 21 enters between the rollers 32 and 34 on both the left and right sides of the second bending unit 31 and the shaft 23 of the first bending unit 21. The curved portions formed by the grooves 24 of the grooves enter the grooves 33 and 35 formed on the rollers 32 and 34 on both sides, and the left and right lifted portions are collected inward. However, because the top is not flat enough, a full flat oval has not yet been achieved. The second bending unit having the above-described configuration may be installed in two consecutively, but the grooves 33 and 35 of the rollers of the first second bending unit 31 are the grooves 33, of the rollers of the second second bending unit 31. It is desirable to achieve a gentler curved surface than 35).

5 is driven by the driving means as a pressure unit 41 composed of a pair of upper and lower pressure rollers 42 and 43. Previously, the strip with the center of the upper portion floating is passed between the upper and lower pressure rollers 43 and 43, and the upper and lower portions of the strip are pressed until the flat oval shape is obtained.

6 shows a joining unit 51, in which a plurality of rollers 54, 55, 56, 57 and 58, which are formed in a pair of upper and lower parts, are continuously installed. An overlap prevention plate 59 is provided at a portion before the strip 100 passes the first bending roller 54. The overlap prevention plate 59 is a vertical plate that rises upward, and the strip 100 is a pressure roller 42. When folded by 43), both ends of the strip 100 do not enter the first bending roller 54 of the joining unit 51 in the state of overlapping each other up and down.

In the upper and lower rollers of each of the rollers of the bonding unit, the upper roller is a roller driven by a driving means, and the lower roller is a roller to which power is not supplied separately. The lower roller is rotatably installed in the frame connected to the ceiling. The left and right sides of the frame 52, on which the lower roller is installed, are the portions where the curved portion of the strip touches, thus forming a shape corresponding to the curved portion of the strip.

The strip 100 formed in a flat oval shape after passing the upper and lower pressure rollers 42 and 43 is formed while both ends of the strip 100 to be joined are passed through the first bending roller 54 shown in FIG. 7A. Bend obliquely in the opposite direction. Then, while passing through the L-shaped second bending roller 55 shown in FIG. 7B, both bent ends of the strip 100 are bent at right angles to opposite directions, respectively. After passing through the second bending roller 54, both ends to be bonded are separated from each other by a predetermined length, thereby allowing the connection member 53 of the frame 52 in FIG. 6 to pass therethrough. After the strip 100 has passed through the connecting member 53 of the frame 52, the operator hangs both bent portions 101 and 102 of the strip which are bent at right angles to each other as shown in Fig. 8A. At this time, it is preferable to install a pair of left and right press rollers pressing the strip 100 from side to side in order to allow the two bent portions 101 and 102 to easily touch each other at the portion where the first bent roller passes.

The bending portions 101 and 102 overlapped with each other by the above process pass through the third bending roller 56 of Z-shape shown in FIG. 7C and the fourth bending roller 57 with flat grooves shown in FIG. 7D. The flat bending roller 58, which is pressed flat and shown in FIG. 7E, raises the edges of the joints so that the bent portions 101, 102 in the pressed and overlapping states cannot be released from each other. Thus, the strip 100 passed through the finishing bending roller 58 becomes a product having a shape as shown in FIG. 8B.

As described above, a joining unit provided with a seam welder may be used instead of the joining unit provided with a continuous roller. Seam welding is pressurized and energized by sandwiching two plates between the roller electrodes on the disk, and by repeating spot welding while moving the plate by rotating the electrodes, one continuous linear joint is obtained. Used for joints requiring oil tightness. Seam welding is a technique well known to those skilled in the art and will not be described in detail about seam welding.

When the seam welding method is adopted, the operator overlaps a part of both ends of the strip, and then inserts the overlapped part between the roller electrodes of the seam welder so that both ends are welded. The method of using a seam welder is also simple, but this method cannot be welded for a long time compared to the method of joining by multiple bending rollers, so there is a limit to continuous work, high electricity consumption, and the seam may be broken. It is difficult to apply.

The strip 100 passing through the joining unit 51 is maintained in shape through the calibration unit 61 shown in FIG. The calibration unit 61 consists of a pair of left and right vertically standing rollers 62 and 64 and two rotatably mounted calibration members 66 provided therebetween. The left and right rollers 62 and 64 are rollers driven by the driving means, and the internal calibration member 66 is not supplied with power separately. Each of the straightening members 66 is rotatably installed at both ends of the shaft 69 provided on the plate 68, the two hemispherical members 67 across the center. As shown in FIG. 1, the plate 68 on which the shaft 69 of the straightening member 66 is installed is extended from the end of the frame 52 supporting the lower rollers of the bonding unit 51.

In the calibration unit 61, the rollers 62 and 64 on both sides have grooves 63 and 65 corresponding to the left and right curved surfaces of the strip 100 at the center thereof, and the calibration member 66 is also formed on the left and right curved surfaces of the strip 100. The outer surface of the strip 100 is in close contact with the left and right rollers 62 and 64 and the inner surface of the strip 100 is in close contact with the straightening member 66 so that the strip 100 has an accurate shape. It acts to make it possible.

The strip 100 passing through the calibration unit 61 passes through a pair of upper and lower pressure rollers 71 shown in FIG. The calibration unit 61 maintains the shape of the curved portion of the strip 100, while the pressure roller 71 shown in FIG. 5 presses the flat portion of the strip 100 to maintain the shape of the flat portion.

The strip 100 passing through the pressure roller 71 is finally supplied to the cutting unit 81 and when the laser sensor 82 detects the strip 100, the strip 100 is cut into the cutting blade 83 of the cutting unit 81. Finish the product by cutting 100) every certain length.

By repeating the above series of operations, an oval duct product of a constant shape and length is continuously manufactured.

The left and right pair of rollers are all configured to be movable left and right to adjust the length of the flat portion of the oval duct.

According to the present invention, when it takes about 30 minutes to produce a 4m oval duct by the manual method and requires at least two workers, and the shape of the oval duct is not constant every time, the present invention is applied to the present invention. By using the Oval duct manufacturing device, it takes only tens of seconds to produce the 4m long Oval duct and reduces the manufacturing cost by 1/10. One operator is enough and the shape of the Oval duct is always uniform. There is this. In addition, the reinforcement grooves are formed at regular intervals so that the durability is strong, while the conventional spiral duct is formed in a spiral shape, compared to the present invention, since the seams are formed in a date, there is little material loss, and the roller spacing is adjusted by adjusting the distance. There is an advantage in that it is possible to manufacture the oval duct of the specification.

It is apparent to those skilled in the art that various modifications and variations can be made within the technical scope of the present invention based on the above embodiments, and such modifications and modifications belong to the claims of the present invention.

Claims (6)

A strip unit for supplying strips; Upper and lower forming grooves formed on the outer diameter surfaces of the rollers and the forming protrusions corresponding to the forming grooves in a direction perpendicular to the conveying direction of the strips so that reinforcement grooves are formed at predetermined intervals on the strips transferred from the strip unit. Bending unit for reinforcing groove forming comprising a pair of primary bending roller; A first roller including a bending roller rotatably installed in a feeding direction of the strip for bending both sides of the strip by pressing two places of the strip drawn out from the first bending roller and a rotating shaft having grooves corresponding to the bending roller; Bending unit; A second bending unit including a pair of left and right bending rollers having grooves for bending both curved portions of the strip drawn out from the first bending unit inwardly so as to be elliptical; A joining unit including a plurality of upper and lower pairs of bending rollers which are continuously installed where both ends of the strip are joined to pass the second bending unit to join the both ends of the strip and the grooves having different shapes; A pair of left and right calibration rollers in contact with both outer surfaces of the strip drawn out from the joining unit and having grooves for transporting the strip, and one or more calibration members in close contact with both inner surfaces of the strip and rotated about an axis. Calibration unit; A cutting unit cutting a strip drawn out from the calibration unit; Oval duct manufacturing apparatus comprising a.  A strip unit for supplying strips; Upper and lower forming grooves formed on the outer diameter surfaces of the rollers and the forming protrusions corresponding to the forming grooves in a direction perpendicular to the conveying direction of the strips so that reinforcement grooves are formed at predetermined intervals on the strips transferred from the strip unit. Bending unit for reinforcing groove forming comprising a pair of primary bending roller; A first roller including a bending roller rotatably installed in a feeding direction of the strip for bending both sides of the strip by pressing two places of the strip drawn out from the first bending roller and a rotating shaft having grooves corresponding to the bending roller; Bending unit; A second bending unit including a pair of left and right bending rollers having grooves for bending both curved portions of the strip drawn out from the first bending unit inwardly so as to be elliptical; A joining unit including a seam welder provided to join both ends of the strip passing through the second bending unit; A pair of left and right calibration rollers in contact with both outer surfaces of the strip drawn out from the joining unit and having grooves for transporting the strip, and one or more calibration members in close contact with both inner surfaces of the strip and rotated about an axis. Calibration unit; A cutting unit cutting a strip drawn out from the calibration unit; Oval duct manufacturing apparatus comprising a. The method according to claim 1 or 2, Upper and lower pairs of rollers installed between the second bending unit and the bonding unit to press the strip drawn out from the second bending unit on the upper and lower portions, and installed between the correction unit and the cutting unit, so that the correction unit Oval duct manufacturing apparatus, characterized in that it further comprises a pair of upper and lower rollers for pressing the strip drawn from the upper, lower. The method according to claim 1 or 2, The cutting unit is an oval duct manufacturing apparatus characterized in that it comprises a cutting device for cutting the strip by the sensor device and the cutting blade to stop the strip when detecting the strip. The method according to claim 1 or 2, One orthodontic member constituting the joining unit is composed of two hemisphere-shaped members coupled to an axis rotatably supported by a fixed plate, and one of the two hemisphere-shaped members is positioned above the fixed plate and the other is Located at the bottom of the fixing plate, the correction member is an oval duct manufacturing apparatus, characterized in that two are installed so as to correspond to each of the grooves of the left and right calibration rollers. The method of claim 1, The joining unit includes a first bending roller for bending both ends of the strip to be joined in an oblique direction, an L-type second bending roller for bending the bent ends of the strip in a right angle, and pressing a joint portion where both ends of the strip are entangled. A third bending roller of Z-shape to give, a fourth bending roller to press the seam to be flat, and a finishing bending roller to form a protrusion next to the seam so that the seam is not loosened. Oval duct manufacturing apparatus characterized in that.

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