KR20130125544A - Roll forming system and manufacturing method thereof - Google Patents

Abstract

According to the present invention, provided is a roll forming system includes: a roll forming part having multiple forming rolls which are horizontally and separately arranged, and sequentially forms an aluminum coil fed from an uncoiler; a bending roll part being formed at the rear end of the roll forming part and forming the curved surface of the aluminum coil passing through the last forming roll; and a control part controlling the operation of the bending roll part. According to the present invention, the roll forming system and a method for manufacturing the same allow the side of the aluminum coil fed from the uncoiler to have multiple concavo-convex portions through a roll forming process in order to easily manufacture a shell plate with reinforced strength through one operation, thereby massively producing the shell plates and improving work efficiency. In addition, the present invention bends the aluminum coil using the bending roll part in which a pair of bending rolls is eccentrically arranged up and down, wherein the bending rolls for bending the aluminum coil are arranged in two lower rows and one upper row in an existing invention, thereby easily forming the curved surface at an aluminum alloy material.

Description

Roll forming system and manufacturing method

The present invention relates to a roll forming system and a method of manufacturing the same, and more particularly, in the manufacture of an outer hull of an aluminum hull, the production process can be simplified and mass production is possible, and the roll forming system can be easily formed in a curved shape, and the manufacture thereof. It is about a method.

In general, roll forming is to sequentially transform the coil-shaped metal material to form a variety of products such as round or square pipes, as well as upper and lower open and multi-stage bending.

Roll forming as described above, the plurality of forming rolls provided in the upper and lower pairs are arranged in a plurality of spaced apart in the horizontal direction, so that the metal material can be sequentially formed in the desired shape by passing the metal material between the forming rolls.

Meanwhile, in Korea, aluminum alloy wires are being converted mainly to small vessels such as motor boats as an alternative to FRP (Fiber Reinforced Plastics) ships.

The aluminum alloy wire is lighter than the FRP wire, and has advantages in providing durability, corrosion resistance, and environment friendliness.

However, in order to reinforce the hull, an aluminum alloy wire must weld a plurality of reinforcing members to the inside of the aluminum alloy material, and the aluminum alloy material has a limitation in deformation control, which requires a lot of time and cost in the manufacturing process. Difficulties in mass production.

In recent years, in order to solve such a problem, roll shaping | molding technology is applied and the outer shell hull which has an uneven shape in an outer shell is manufactured. Such uneven shell hull can be produced mainly from the bottom plate forming the bottom of the hull and the side plate forming the side of the hull. In particular, the bottom plate and the outer side of the side plate without the use of Longitudinal Strength member by applying the uneven outer shell shape to reduce the thickness while maintaining the strength of the hull, compared to the ordinary boat to weigh the hull We are building lightweight aluminum boat which we reduced.

However, the roll forming as described above is conventionally formed by the semi-automatic single stage roll forming machine 1 as shown in FIG. 1. In the case of the semi-automatic single-stage roll forming machine 1, the semi-automatic single-stage roll forming machine 1 having the forming roll 1a forms the shape of the unevenness 2a at the top of the aluminum alloy material 2. Since the work is repeatedly performed for molding, the working time is long, and the worker has a disadvantage in that fatigue is increased and eventually work efficiency is lowered.

In addition, in the case of the hull, the bow portion should be formed to form a curved surface. In order to form a curved surface on the bow portion, a bending process is performed. Here, in order to bend the hull, as shown in Fig. 2, the aluminum alloy material 2 is passed between the three bending rollers 3 to form a curved surface. In other words, between the two lower rollers 3a fixedly arranged at the bottom and one upper roller 3b at the top between the two lower rollers 3a, the upper roller 3b moves up and down. The bending process is performed to form the curved surface of the aluminum alloy material 2.

By the way, in the bending processing method as described above, the bending roller 3 is arranged in three, the manufacturing time according to the manufacturing of the bending processing apparatus is long, and the manufacturing cost is increased. In addition, it is arranged in a separate work space from the one-stage roll molding machine (1), the operator moves the aluminum alloy material (2) formed by the semi-automatic one-stage roll molding machine (1) back to the bending roller (3) Since the curved surface must be formed, this has the disadvantage that the operator is increased fatigue work efficiency is lowered.

The present invention has been made to solve the above problems, the object of the present invention is to provide a roll forming system and a method of manufacturing the same, which can be mass-produced in one operation in the manufacture of the outer plate of the hull, easy to form the curved portion. have.

According to the present invention for achieving the above object, a plurality of forming rolls sequentially forming the aluminum coil supplied from the uncoiler roll forming unit spaced apart in the horizontal direction; A bending roll part installed at a rear end of the roll forming part to form a curved surface of the aluminum coil passing through the forming roll disposed last; And a control unit for controlling driving of the bending roll unit.

Here, the forming roll may include an upper and lower rolls arranged up and down to press-form the aluminum coil by rotation, and a support frame for rotatably fixing both sides of the upper and lower rolls, respectively.

In addition, the bending roll unit, the lower processing roll is rotatably installed around the fixed first rotating shaft position, and the second rotating shaft eccentrically moved from the first rotation axis of the lower processing roll in the lateral direction The upper processing roll may be disposed on the lower processing roll so as to be rotatable around the upper processing roll to form a curved surface of the aluminum coil.

In the present invention, supplying an aluminum coil; Roll forming the supplied aluminum coil; Placing the rolled aluminum coil between the lower roll and the upper roll; And bending the aluminum coil by pressing.

The roll forming system and its manufacturing method according to the present invention can be rolled to have a plurality of irregularities on the side of the aluminum coil supplied from the uncoiler to facilitate the production of the hull shell plate having a reinforcement degree in one operation, so that mass production is possible. And work efficiency is improved.

In addition, the bending processing roll portion is arranged in the existing lower two rows and the upper one row of processing rolls by bending and arranging them eccentrically with a pair of upper and lower processing rolls, thereby easily forming curved surfaces of aluminum alloy materials. Moreover, simultaneous production with roll forming can shorten the air, thus reducing the labor cost and economical.

1 is a use state perspective view showing an example of a roll forming apparatus according to the prior art.
2 is a perspective view showing a state in which the processing to form a curved surface on the hull according to the prior art,
3 is a schematic configuration diagram of a roll forming system for implementing roll forming molding according to an embodiment of the present invention;
4 is an enlarged view of the bending roll shown in FIG. 3;
FIG. 5A is a perspective view of a side plate having an uneven outer plate shape manufactured according to the roll forming molding shown in FIG. 3; FIG.
5B is a cross-sectional view taken along the line VV of FIG. 5A;
6A is a perspective view of a bottom plate having an uneven outer plate shape manufactured according to the roll forming molding shown in FIG. 3;
6B is a cross-sectional view taken along line VI-VI of FIG. 6A;
7 is a perspective view of a hull completed by combining the side plate and the bottom plate having a concave-convex outer plate shape manufactured according to the roll forming molding shown in FIG.
8 is a flowchart illustrating a manufacturing method of the roll forming system shown in FIG. 3.

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

3 is a schematic configuration diagram of a roll forming system for implementing roll forming molding according to an embodiment of the present invention, and FIG. 4 is an enlarged view of the bending roll unit shown in FIG. 3.

5A is a perspective view of a side plate having an uneven outer plate shape manufactured by the roll forming molding shown in FIG. 3, and FIG. 5B is a cross-sectional view taken along the line VV of FIG. 5A.

In addition, Figure 6a is a perspective view of the bottom plate having a concave-convex outer shell shape manufactured according to the roll forming molding shown in Figure 3, Figure 6b is a cross-sectional view taken along line VI-VI of Figure 6a, Figure 7 is shown in Figure 3 It is a perspective view of the hull completed by combining the side plate and bottom plate which have the uneven | corrugated outer plate shape manufactured according to the roll forming shaping | molding.

3, the roll forming system 100 according to an embodiment of the present invention, by pressing the aluminum coil 11 supplied from the uncoiler 10 in order to form a deformation, the roll forming unit 110 ) And the bending roll unit 120 and the control unit 130.

The roll forming unit 110 includes a plurality of forming rolls 111 and a support frame 112. Here, the forming roll 111 includes an upper forming roll 111a and a lower forming roll 111b.

The upper forming roll (111a) and the lower forming roll (111b) is a forming roll 111 arranged in a pair of upper and lower, a plurality of sequentially arranged in the horizontal direction.

In the figure, although the forming roll 111 is shown as 10, but is not limited to this, it can be increased or decreased according to the forming step.

And it is disposed in front of the upper forming roll (111a) and the lower forming roll (111b), the uncoiler 10 for releasing the aluminum coil 11 is configured. The aluminum coil 11 released from the uncoiler 10 is sequentially press-molded by passing therebetween by the rotation of the upper forming roll 111a and the lower forming roll 111b.

The support frame 112 is disposed on both sides of the upper forming roll (111a) and the lower forming roll (111b), respectively for rotatably fixing the upper forming roll (111a) and lower forming roll (111b) Play a role. In addition, the support frame 112 fixes the upper forming roll (111a) and the lower forming roll (111b) detachably. That is, it is possible to install a variety of forming rolls in accordance with the shape of the member to be formed by the forming roll 111.

The bending processing roll part 120 includes a lower processing roll 121, an upper processing roll 122, and a fixed frame 123. The bending roll 120 is installed at the rear end of the roll forming part 110 to serve to form a curved surface on the aluminum coil 11 passed through the forming roll 111 disposed last. Here, the lower processing roll 121 is rotatably installed on the fixed frame 123 about the first rotating shaft 121a having a fixed position.

The upper processing roll 122 is disposed above the lower processing roll 121 and is rotatably installed on the fixed frame 123 about the second rotation shaft 122a. Here, the second rotating shaft 122a of the upper processing roll 122 is disposed to be eccentrically laterally than the first rotating shaft 121a of the lower processing roll 121. That is, it moves by the distance "d" in the first rotary shaft 121a of the lower processing roll 121. In addition, the second rotating shaft 122a of the upper processing roll 122 is installed to be movable up and down. The upper processing roll 122 serves to press the aluminum coil 11 to form a curved surface. In other words, in bending the aluminum coil 11 formed from the roll forming unit 110, the upper processing roll 122 is disposed to be eccentrically laterally than the lower processing roll 121, and the upper portion The processing roll 122 is moved downward to press the aluminum coil (11). Therefore, the aluminum coil 11 may be formed to be curved.

The control unit 130 serves to control the bending roll unit 120. In other words, the control unit 130 is an aluminum coil 11 passed through the forming roll 111 disposed at the rear end of the roll forming unit 110 is the lower processing roll 121 and the upper processing roll When positioned between the 122, the upper processing roll 122 is controlled to move downward. Then, the upper processing roll 122 moves downward, pressurizing the aluminum coil (11). Accordingly, the aluminum coil 11 is formed to form a curved surface by the upper processing roll 122 disposed eccentrically on the lower processing roll 121. When the curved surface is formed in the aluminum coil 11, the control unit 130 controls to stop the pressing of the upper processing roll 122 to move to the upper side.

Thus, the hull part is completed by roll forming molding according to the embodiment of the present invention. FIG. 5A shows a perspective view of a hull component formed by the roll forming system 100 shown in FIG. 3. Referring to FIG. 5A, the hull part may be a side plate 20 of a ship. The side plate 20 may be formed of first unevenness 21 having a plurality of outer sides thereof. Such a side plate 20 is light in weight but improves in strength. 5B is sectional drawing along the VV line of FIG. 5A. Referring to FIG. 5B, the side plate 20 is formed with first unevenness 21 arranged on the outer side at a predetermined interval, and the first unevenness 21 has a separate longitudinal strength member on the side plate 20. It maintains strength without using.

In addition, the roll forming system 100 according to an embodiment of the present invention, it is possible to manufacture a bottom plate 30 forming the bottom of the hull. In other words, the forming roll 111 and the bending roll 120 of the roll forming unit 110 may be replaced to form the bottom plate 30 of the hull. The bottom plate 30 is also provided with a plurality of second unevenness 31 arranged at regular intervals on the other side. Here, since the second unevenness 31 exhibits the same action and effect as the first unevenness 21 of the side plate 20, repeated description thereof will be omitted.

As described above, the side plate 20 and the bottom plate 30 manufactured by the roll forming system 100 may be completed in the hull by welding.

Referring to FIG. 7, there is shown a perspective view of a hull in which a pair of side plates 20 and a bottom plate 30 having an uneven outer plate shape manufactured according to the roll forming molding shown in FIG. 3 are coupled to each other.

In order to combine the hull, first, each end of the side plate 20 and the bottom plate 30 can be welded to each other (W) to complete one side of the hull. And the same operation can be repeated and the other side facing one side of the said hull can be completed. Then, the operator arranges the end portions of the bottom plate 30 corresponding to one side of the hull and the end portions of the bottom plate 30 corresponding to the other side to face each other and are then joined to each other by welding (W). This completes the hull.

As described above, the roll forming system 100 according to the embodiment of the present invention is roll-formed to have a plurality of first and second unevennesses 21 and 31 in the aluminum coil 11 to perform a single operation. Mass production is possible. In addition, the bending roll unit 120 is arranged by bending rolls formed by two rows of upper rows and one row of upper rows, and is bent by arranging the upper and lower pairs of processing rolls 121 and 122 to form a roll forming apparatus. The cost of production can be reduced.

Hereinafter, a manufacturing method of the roll forming system 100 will be described. FIG. 8 is a flowchart illustrating a manufacturing method of the roll forming system 100 shown in FIG. 3.

Referring to FIG. 8, first, an aluminum coil is supplied. (S110) Here, the aluminum coil 11 has an uncoiler 10 for releasing the aluminum coil 11 in front of the roll forming unit 110. The aluminum coil 11 is disposed and supplied to the roll forming unit 110.

Next, the supplied aluminum coil 11 is roll-formed. (S120) Here, the roll-forming is a forming roll in which the upper forming roll 111a and the lower forming roll 111b are arranged in an upper and lower pair. 111, and a plurality of such forming rolls 111 are sequentially spaced apart in the horizontal direction. The upper forming roll 111a and the lower forming roll 111b rotate the aluminum coil 11 supplied from the uncoiler 10 between the upper forming roll 111a and the lower forming roll 111b. By pressure molding.

Next, the aluminum coil 11 that has undergone the roll forming step is positioned between the lower processing roll 121 and the upper processing roll 122. (S130) Here, the aluminum formed from the roll forming unit 110 In order to curve the coil 11, the coil 11 is positioned between the bending roll parts 120, that is, between the lower roll 121 and the upper roll 122.

Finally, the aluminum coil 11 is pressed to be bent (S140). Here, the upper processing roll 122 is disposed above the lower processing roll 121 and is disposed on the side of the lower processing roll 121. Place it eccentrically in the direction. In addition, the upper processing roll 122 is installed to be moved up and down. In addition, the curved surface is formed by pressing the aluminum coil 11 formed from the roll forming unit 110.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: roll forming system 110: roll forming unit
111: forming roll 111a: upper forming roll
111b: lower forming roll 112: support frame
120: bending roll 121: lower cutting roll
121a: first rotating shaft 122a: second rotating shaft
122: upper processing roll 130: control unit
10: uncoiler 11: aluminum coil
20: side plate 21: first unevenness
31: 2nd unevenness 30: bottom plate

Claims (4)

A roll forming unit in which a plurality of forming rolls sequentially forming aluminum coils supplied from an uncoiler are spaced apart in a horizontal direction;
A bending roll part installed at a rear end of the roll forming part to form a curved surface of the aluminum coil passing through the forming roll disposed last; And
Roll forming system including a control unit for controlling the driving of the bending roll processing unit. The method according to claim 1,
The forming roll,
Upper and lower rolls arranged up and down to press-mold the aluminum coil by rotation;
Roll supporting system comprising a support frame for rotatably fixing the upper and lower rolls, respectively. The method according to claim 1,
The bending roll part,
A lower processing roll installed to be rotatable about a fixed first rotating shaft,
An upper processing roll disposed on an upper portion of the lower processing roll to be rotatable about a second rotating shaft eccentrically lateral from the first rotating shaft of the lower processing roll and movable up and down; Roll Forming System Including. Supplying an aluminum coil;
Roll forming the supplied aluminum coil;
Placing the rolled aluminum coil between the lower roll and the upper roll; And
Roll forming manufacturing method comprising the step of pressing by bending the aluminum coil.

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