KR102125174B1 - Apparatus for manufacturing spiral duct - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a spiral duct, which comprises: a bending unit for forming a primary bending material having a downwardly bent unit at one end in a widthwise direction of a raw material and an upwardly bent unit at the other end thereof by pressing the raw material passing through an upper portion of a support mold toward the support mold; a filler supply unit for applying an adhesive filler to the upwardly bent unit formed by the bending unit; an end inclination unit for allowing the upwardly bent unit and the downwardly bent unit to be inclined toward the center of the bent material; and a molding unit having a pressing roller for inducing a secondary bending material formed by passing through the end inclination unit in a spiral direction to induce the downwardly bent unit to be fitted to the upwardly bent unit, and allowing the upwardly bent unit and the downwardly bent unit engaged and coupled with each other in a state that the filler is interposed. According to the apparatus of the present invention, the filler is applied on one end in the widthwise direction of the material while the continuously conveyed material is heat, such that the filler is interposed in a bonding unit of a completely manufactured spiral duct, thereby manufacturing the spiral duct without separation of the bonding unit and concern of fluid leakage and noise occurrence.

Description

Spiral duct manufacturing equipment {Apparatus for manufacturing spiral duct}

The present invention relates to a spiral duct fabrication apparatus, and more particularly, to a spiral duct fabrication apparatus capable of manufacturing a spiral duct having excellent airtightness and a rigid structure by continuously adding a filling material to a joint portion of a material.

Spiral ducts, which are piped to the ceiling or walls of a building, are used for a variety of purposes, such as supplying air conditioning and heating air to an indoor space or ventilating air in an enclosed space.

These spiral ducts are manufactured through a dedicated manufacturing apparatus. The dedicated manufacturing apparatus unfolds both ends of the raw material in the width direction while continuously supplying the raw material of a certain width wound on the reel, and bending the bent material in the spiral direction. At the same time, it advances to and simultaneously fits the bent part, presses and connects it with a pressure roller, and when the duct is formed to an appropriate length, it has a basic structure that is cut with a circular cutter.

Spiral ducts are continuous in the longitudinal direction and are connected to the widthwise ends of materials having a certain width, so it is very important to firmly bond between the materials. If the bonding between the materials is not perfect, it is because fluid passing through the inside of the duct leaks or vibration occurs when the fluid flows.

As a spiral duct manufacturing apparatus, the manufacturing apparatus disclosed in Korean Registered Utility Model Publication No. 20-0232329, bends both ends in the width direction of the plate material supplied from the reel stand with a bending roller, and both ends of the bent plate material are compressed rollers. It is pressurized to form a cylindrical duct, and has a configuration for cutting the formed duct with a circular saw blade.

In addition, the manufacturing apparatus introduced in Korean Patent Registration No. 10-0599078, the manufacturing apparatus and manufacturing method of the spiral duct, the first edge forming roll for forming the double-folded portion at the edge portion of both straight portions of the metal band, the first The metal roll from the edge forming roll is installed so that the horizontal rotation angle fluctuates periodically in order to cut in a wave shape or a straight line along the longitudinal direction, and the cut metal band is wound in a spiral shape to combine the single and double folds. A seam device is provided.

However, in the spiral duct made of the above-described conventional manufacturing apparatus, since the joining of the widthwise end of the raw material is simply fitting and bending the bent portion, the joining portion is often finely spread over time. When the joint part opens, the internal fluid starts to leak, and noise due to vibration is generated.

Domestic Registration Utility Model Publication No. 20-0232329 (Spiral Duct Manufacturing Device) Domestic registered patent publication No. 10-0599078 (Spiral duct manufacturing device and manufacturing method) Domestic registered utility model publication No. 20-0403137 (Connecting device of spiral duct)

The present invention was created to solve the above problems, and to provide a filling material interposed in the joint portion of the manufactured spiral duct, the object of the present invention is to provide a spiral duct fabrication apparatus that does not have a gap in the joint and does not have a risk of fluid leakage or noise generation. have.

A spiral duct production apparatus of the present invention as a solution means for achieving the above object is a material supply unit for supplying a raw material having a predetermined width and extending in the longitudinal direction; A support mold for supporting and supporting the raw material supplied from the material supply unit and horizontally transferred; It is disposed on the upper portion of the supporting mold and presses the raw material passing through the upper portion of the supporting mold downward to the supporting mold side, thereby bending both ends in the width direction of the raw material, so that the lower bending portion is bent downward at one end in the width direction, A bending portion forming a primary bending material having an upward bending portion bent upward; A filling material supply unit which applies an adhesive filling material to an upward bending part formed by the bending part; A transfer unit providing a transfer force to the primary bending material coated with the filler; An end tilt portion disposed on the downstream side of the transfer portion, passing through the primary bending material and tilting the upward and downward bending portions toward the center of the bending material; Spiral guided housing and guided downward bending part and upward bending part guided by the spiral guided housing and the spiral guided housing to induce the downward bending part to fit the upward bending part by guiding the secondary bending material formed through the end slope part in the spiral direction , A molded portion having a press roller that allows the upward bend portion and the downward bend portion to be engaged with each other while being interposed between the filling materials is included.

Further, on the upstream side of the bent portion, a heater is further provided to heat the raw material directed to the bent portion and lower the viscosity of the filler applied to the raw material.

In addition, the bent portion; A plurality of support brackets, which are spaced in parallel and provide support, are supported to be rotatable at both ends of the support bracket, and press the widthwise ends of the transferred raw materials toward the support mold to form the upward and downward bending parts. It includes a bending roller.

In addition, the inside of some of the plurality of bending rollers, a center hole located in the central axis of rotation of the bending roller, extending in a radial direction from the center hole, opening the center hole in a radial direction, and placing a plurality of conformal Induction furnaces, a plurality of discharge passages communicating with the side of each induction furnace and opening in a radial direction of a bending roller are formed, and a first catching jaw and a second catching jaw are formed inside the induction furnace, and the first Between the first and second hanging jaws, reciprocating between the first and second hanging jaws, a part of which protrudes to the outside of the taxiway and is provided with an opening/closing block pressed into the inside of the taxiway by external force, and the opening/closing block Inside, the opening and closing block is formed into an inside passage through which the center hole and the discharge passage are completely connected to the inside of the induction furnace by external force, and the opening and closing block is formed in the outside direction of the induction furnace in the inside of the induction furnace. An elastic spring is provided, and the filling material supply unit; It has a filling container filled with a filling material, and is connected to the center hole through a supply pipe, and has a pressure pusher that presses the filling material inside the filling container into the center hole.

The spiral duct production apparatus of the present invention made as described above, by heating the material to be continuously transported, and simultaneously applying the filler to the width direction one end of the material, so that the filler is interposed at the junction of the finished spiral duct, Spiral ducts can be manufactured that are free of gaps and are free from fluid leakage or noise.

1 is a plan view showing the entire structure of a spiral duct manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a partial side view of the manufacturing apparatus shown in FIG. 1.
Figure 3a is a primary bending material, Figure 3b is a view showing a cross-sectional shape of the secondary bending material.
4 is a view for explaining the detailed structure of the bending roller shown in FIG.
5 is a cross-sectional view taken along line BB in FIG. 4.

Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

Basically, the spiral duct fabrication apparatus of the present invention has a structure capable of producing a spiral duct that does not have a swelling phenomenon and has no vibration or noise by applying an adhesive filling material between spirally connected raw materials. Have

The spiral duct manufacturing apparatus of the present invention includes a material supply unit which supplies a raw material having a predetermined width and extending in the longitudinal direction; A support mold for supporting and supporting the raw material supplied from the material supply unit and horizontally transferred; It is disposed on the upper portion of the supporting mold and presses the raw material passing through the upper portion of the supporting mold downward to the supporting mold side, thereby bending both ends in the width direction of the raw material, so that the lower bending portion is bent downward at one end in the width direction, A bending portion forming a primary bending material having an upward bending portion bent upward; A filling material supply unit which applies an adhesive filling material to an upward bending part formed by the bending part; A transfer unit providing a transfer force to the primary bending material coated with the filling material; An end tilt portion disposed on the downstream side of the transfer part, passing through the primary bending material and tilting the upward and downward bending portions toward the center of the bending material; Spiral guided housing and guided downward bending and upward bending of the spiral guided housing to guide the secondary bending material formed through the end slope to guide the downward bending portion to fit the upward bending portion. , The upper bending portion and the downward bending portion includes a molding portion having a pressing roller to be engaged with each other in a state interposed with the filling material.

1 is a plan view showing the entire structure of a spiral duct manufacturing apparatus 10 according to an embodiment of the present invention, and FIG. 2 is a diagram schematically showing a state in which the manufacturing apparatus shown in FIG. 1 is viewed from the side. In addition, Figure 3a is a primary bending material, Figure 3b is a view showing a cross-sectional shape of the secondary bending material.

As shown, the spiral duct manufacturing apparatus 10 according to the present embodiment, the material supply section 20, the introduction section 27, the heating section 31, the support mold 51, the bending section 40, the filling material supply section (47), the transfer portion, the end tilt portion 59, and includes a forming portion 60.

First, the material supply unit 20 has a predetermined width and serves to supply the raw material 100 extending in the longitudinal direction. The raw material 100 is a band-shaped member having a predetermined width and thickness, and is wound around a winding reel 23 of the stand 21. The raw material 100 wound on the winding reel 23 is pulled and released by the conveying roller 54 of the conveying part.

The raw material 100 supplied from the material supply part 20 goes up to the support mold 51 through the introduction part 27 and the heating part 31.

The introduction part 27 includes two fixed position rollers 27a, and maintains the height of the raw material 100 supplied from the winding reel 23 at the height of the supporting mold 51. The raw material 100 to be supplied is directed to the support mold 51 while maintaining the horizontal.

The raw material 100 that has passed through the introduction portion 27 is heated while passing through the heating portion 31. The heating part 31 heats the raw material 100 through heaters 31a disposed on the upper and lower portions of the raw material 100. The reason for heating the raw material is to expand the application area of the filler (z) to be described later as much as possible. That is, as will be described later, the viscous filler (z) is applied to the upward bending portion (101a) of the primary bending material, which lowers the viscosity of the applied filler to induce the filler to spread more widely. The heating temperature of the raw material through the heating part 31 is 50°C to 70°C.

The raw material 100 heated by the heating part 31 rises to the support mold 51 and starts sliding. The support mold 51 is a mold having a cross section shown in FIG. 4 and is supported by the transfer table 53, and guides the raw material to be horizontally transferred to the end tilt portion 59 side. The transfer table 53 is a structure that supports the support mold 51 and the support frame 55.

The bent portion 40 is disposed on the upper portion of the supporting mold 51 and presses the raw material 100 running along the supporting mold downward to the supporting mold side, and serves to bend both ends of the raw material in the width direction. That is, the primary bending material 101 shown in FIG. 3A is made by pressing a plate material continuously conveyed in the longitudinal direction.

The primary bending material 101 is a product after the primary material 100 is subjected to plastic working, and the secondary bending material 102 is a product formed by additionally performing a secondary bending material 101 for plastic processing.

The primary bending material 101 has a horizontal portion 101c, a downward bending portion 101b, an inclined portion 101d, and an upward bending portion 101a, as shown in FIG. 3A.

4, the horizontal portion 101c is a flat portion pressed against the central pressing portion 43a of the bending roller 43, and the downward bending portion 101b is lowered by the second pressing portion 43c. This is the bent part. The downward bending portion 101b forms a right angle to the horizontal portion 101c. In addition, the inclined portion 101d and the upward bent portion 101a are portions formed by the first pressing portion 43b.

The inclined portion 101d connects the horizontal portion 101c and the upwardly bent portion 101a and provides a space between the upwardly bent portion 101a. The space is a portion in which the filling material z supplied from the filling material supply unit 47 is contained. The angle between the inclined portions 101d relative to the horizontal portion 101c is about 150 degrees, and the upward bent portion 101a is orthogonal to the horizontal portions 101c.

The primary bending material 101 having this shape passes through the end tilt portion 59 and is deformed into the secondary bending material 102 of FIG. 3B. The secondary bending material 102 is a state of a straight line entering the forming unit 60, and a description thereof will be described later.

The bending part 40 has a support bracket 41 and four bending rollers 43. The support bracket 41 is fixed parallel to the upper portion of the transfer table 53 and supports both ends of the bending roller 43 to be axially rotatable.

In addition, the bending roller 43 is supported so that both ends of the support bracket 41 are rotatable, and presses the widthwise end of the raw material 100 moving along the support mold downward to form the primary bending material 101. Plays a role. The size and shape of the bending roller 43 are changed to match the required cross-sectional shape.

In particular, the terminal bending roller 43 located at the most downstream side of the four bending rollers 43 is connected to the filling material supply part 47 and passes the filling material supplied from the filling material supply part 47 to the upward bending part 101a side. It also serves as an erupting passage.

The filling material supply part 47 includes a filling material container 47a and a pressure pusher 47b. The filling container 47a is a sealed container in which the filling material to be used is accommodated. In addition, the pressure pusher 47b serves to pump the filler inside the filler container 47a and press it into the center hole (43f in FIG. 5) of the end bending roller 43. To this end, the pressure pusher 47b and the center hole 43f are connected to a supply pipe 47c.

The filler (z) is a fluid adhesive, and may be a silicone or rubber or epoxy resin series. The filling material (z) is cured in a state interposed between the upper bending portion 101a and the lower bending portion 101b when the upper bending portion 101a and the lower bending portion 101b are pressed and fixed in a bite state with respect to each other. In addition, the sealing of the upward bending portion 101a and the downward bending portion 101b is maintained, and noise, vibration, and shock are absorbed. It goes without saying that the upward bending portion 101a and the downward bending portion 101b are not opened by the filling material z.

FIG. 4 is a view for explaining the detailed structure of the end bending roller 43 shown in FIG. 1, and FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4.

As shown, a center hole 43f, four induction furnaces 43g, and two discharge passages 43e formed in each induction furnace 43g are provided inside the bending roller 43.

The center hole 43f is a cylindrical space having a certain inner diameter and is located in the central axis of rotation of the bending roller 43 and receives the filler material z through the supply pipe 47c. Reference numeral 47d is a swivel joint. The swivel joint 47d is a known mechanical element that axially supports the supply pipe 47c coupled to the bending roller 43.

The induction furnace 43g extends in the radial direction from the center hole 43f and is a passage of a constant inner diameter that opens the center hole in the radial direction. The filling material z filled inside the center hole 43f can flow out through the induction furnace 43g. Four of the induction furnaces 43g are formed conformally at an angle of 90 degrees.

In addition, a first catching jaw 43h and a second catching jaw 43k are provided inside the induction furnace 43g, that is, at the upper and lower ends of the inner circumferential surface. The first engaging jaw 43h serves as a stopper to block the opening/closing block 45 to be described later from falling into the center hole 43f. In addition, the second locking jaw 43k prevents the opening/closing block 45 from escaping to the outside of the bending roller 43.

The discharge passage 43e communicates with both sides of each induction passage 43g and extends in the radial direction of the bending roller, and is an open path. The filling material (z) filled in the center hole (43f) can flow out through the induction furnace (43g) to the outside of the first pressing part (43b) through the discharge passage (43e).

An opening/closing block 45 and a spring 46 are installed between the first catching jaw 43h and the second catching jaw 47k. The spring 46 serves to elastically support the opening/closing block 45 in the direction of the arrow p. By the action of the spring 46, the opening/closing block 45 is always supported in the direction of the arrow p (in the state where no external force is applied) and is hung on the second locking jaw 43k.

The opening/closing block 45 is a cylindrical member reciprocable between the first catching jaw 43h and the second catching jaw 43k in an interviewed state on the inner circumferential surface of the induction furnace 43g, and has a protrusion 45a. . The protruding portion 45a is a portion protruding to the outside of the first pressing portion 43b in a state where the opening/closing block 45 is hung on the second locking jaw 43k. As shown in Fig. 5, the protrusion 45a is pushed in when the bending roller 43 passes through the 6 o'clock direction.

An inner passage 45b is formed inside the opening/closing block 45. The inner passage 45b is a passage leading to the filling material z filled in the center hole 43f to the discharge passage 43e. In particular, the internal passage 45b is blocked when the opening/closing block 45 is hung on the second locking jaw 43k, and is opened when the opening/closing block 45 is pushed into the induction passage 43g.

As a result, as the bending roller 43 rotates, the discharge passage of the filling material z is opened while the opening/closing block 45 passes through the vertical lower portion of the center hole 43f, and the filling material is discharged in the arrow s direction. The discharged filler material passes through the lower portion of the camera (57 in FIG. 1) in a state applied to the upper surface of the inclined portion 101d of the primary bending material 101.

The camera 57 is supported by the support frame 55, photographs the primary bending material 101, which has been coated with the filler, and transmits the photographed content to the monitor 58. The operator can visually check the state of the primary bending material 101 through the camera 57. For example, it is to check whether the upward bending portion 101a or the downward bending portion 101b is vertically formed. When the primary bending material 101 is found to be defective, the manufacturing apparatus 10 is stopped and appropriate measures are taken.

The transfer unit is to provide a transfer force to the primary bending material 101 to which the filler is applied, and includes a transfer roller 54 and a motor 56. The transfer roller 54, the outer peripheral surface of which is in close contact with the upper surface of the horizontal portion 101c of the primary bending material 101, is rotated by receiving the rotational force from the motor 56. When the transfer roller 54 rotates, the primary bending material 101 is transferred by the frictional force between the transfer roller and the primary bending material 101.

The primary bending material 101 transferred by the transfer roller 54 passes through the through-mold 59a of the end tilt portion 59 and becomes a secondary bending material (102 of FIG. 3B). The through-mold 59a deforms the upward bending portion 101a and downward bending portion 101b of the primary bending material 101 in the direction of arrow b in FIG. 3B. That is, the upward bending portion and the downward bending portion are inclined toward the center of the bending material. The inclined upward bending portion 101a and the downward bending portion 101b are parallel. In addition, the angle between the lower bent portion 101b with respect to the horizontal portion 101c is 70 to 80 degrees.

The secondary bending material 102 that has passed through the end tilt portion 59 advances in the direction of the arrow k and enters the forming portion 60.

The shaping section 60 includes a spiral induction housing 61, a drive unit 62, an arm 63, a press roller 65, a disk cutter 66, and a reciprocating actuator 67. The spiral induction housing 61 is a ring-shaped mold fixed to the upper portion of the support table 71 and spirally advances the secondary bending material 102 entering in the direction of the arrow k.

The secondary bending material 102 is advanced in the spiral direction along the inner circumferential surface of the spiral induction housing 61. Particularly, the secondary bending material 102 enters the spiral induction housing 61, and then rotates one turn, and the part that starts to enter (into the spiral induction housing 61) overlaps with the width direction end.

That is, the downward bending portion 101b of the portion rotated once is sandwiched between the upward bending portion 101a and the inclined portion 101d of the portion where entry has started. The downward bending portion 101b and the upward bending portion 101a pass through the lower portion of the pressure roller 65 in an overlapped state and are compressed. That is, the upward bending portion 101a and the downward bending portion 101b are engaged with each other in a state interposed with the filling material z.

The driving unit 62 outputs a rotational force for driving the pressure roller 65 and the disc cutter 66, and includes a motor (not shown), a reducer (not shown), and the like. The driving unit 62 is arranged to be slidable on the upper surface of the support table 71, and is slid in the direction of the arrow m or vice versa by the operation of the reciprocating actuator 67.

The reciprocating actuator 67 is a hydraulic actuator, which is fixed to the support table 71 and is connected to the drive unit 62 through a connector 68. The reciprocating actuator 67 serves to control the degree of entry of the arm 63 into the spiral duct 110 being manufactured.

The arm 63 is fixed to the drive unit 62 and extends horizontally and rotatably supports the pressure roller 65 and the disk cutter 66. The inside of the arm 63 may be equipped with a transmission means (not shown) for transmitting the rotation ?? output from the drive unit 62 to the disk cutter 66.

The disc cutter 66 is a cutting blade having the shape of a disc, and serves to cut the spiral duct 110 being manufactured to a desired length. That is, the inner circumferential surface of the spiral duct 110 is pressed and rotated to cut. The operating principle of the forming part 60 itself is the same as that of a conventional manufacturing apparatus.

As described above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention.

10: duct manufacturing device 20: material supply unit 21: stand
23: winding reel 27: introduction 27a: exact position roller
31: heating part 31a: heater 40: bending part
41: support bracket 43: bending roller 43a: central pressing portion
43b: first pressing portion 43c: second pressing portion 43e: discharge passage
43f: Center Hall 43g: Judo Road 43h: 1st Jaw
43k: second engaging jaw 45: opening and closing block 45a: protrusion
45b: internal passage 46: spring 47: filler supply
47a: Filler container 47b: Presser 47c: Supply pipe
47d: swivel joint 51: support mold 53: transfer table
54: feed roller 55: support frame 56: motor
57: Camera 58: Monitor 59: End tilt
59a: penetration mold 60: forming part 61: spiral induction housing
62: drive unit 63: arm 65: pressing roller
66: disc cutter 67: reciprocating actuator 68: connector
71: support table 100: raw material 101: 1st bending material
101a: upward bending portion 101b: downward bending portion 101c: horizontal portion
101d: slope 102: 2nd bending material 102a: home
110: spiral duct

Claims (4)

delete delete delete A material supply unit which supplies a raw material having a certain width and extending in the longitudinal direction; A support mold for supporting and supporting the raw material supplied from the material supply unit and horizontally transferred; It is disposed on the upper portion of the supporting mold and presses the raw material passing through the upper portion of the supporting mold downward to the supporting mold side, thereby bending both ends in the width direction of the raw material, so that the downward bending portion bent downward at one end in the width direction and the other end portion. A bending portion forming a primary bending material having an upward bending portion bent upward; A filling material supply unit which applies an adhesive filling material to an upward bending part formed by the bending part; A transfer unit providing a transfer force to the primary bending material coated with the filling material; An end tilt portion disposed on the downstream side of the transfer part, passing through the primary bending material and tilting the upward and downward bending portions toward the center of the bending material; Spiral guided housing and guided downward bending part and upward bending part guided by the spiral guided housing and the spiral guided housing to induce the downward bending part to fit the upward bending part by guiding the secondary bending material formed through the end slope part in the spiral direction , A molded portion having a press roller that allows the upward bend portion and the downward bend portion to be engaged with each other while being interposed with the filling material is included,
The bent portion; A plurality of support brackets, which are spaced in parallel and provide support, are supported to be rotatable at both ends of the support bracket, and press the widthwise ends of the transferred raw materials toward the support mold to form the upward and downward bending parts. It includes a bending roller,
Among the plurality of bending rollers, inside of some bending rollers, a center hole located in the central axis of rotation of the bending roller, a plurality of induction furnaces extending in the radial direction from the center hole, opening the center hole in the radial direction, and are conformally arranged to each other , A plurality of discharge passages are formed in communication with the side of each induction furnace and opened in the radial direction of the bending roller,
A first engaging jaw and a second engaging jaw are formed inside the induction furnace,
Between the first and second locking jaws, reciprocating between the first and second locking jaws, a part of which protrudes to the outside of the taxiway and is provided with an opening and closing block pressed into the interior of the taxiway by external force,
Inside the opening/closing block, an internal passage for communicating the center hole and the discharge passage is formed in a state where the opening/closing block completely enters the inside of the induction furnace by external force,
A spring for elastically supporting the opening and closing block in an outer direction of the induction furnace is provided inside the induction furnace,
The filler supply unit; A spiral duct manufacturing apparatus having a filling material container filled with a filling material and a pressure pusher that is connected to the center hole through a supply pipe and presses the filling material inside the filling material container into the center hole.

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