KR20080011914A - Waveform steel sheet molding apparatus - Google Patents

Abstract

An apparatus for molding a waveform steel sheet is provided to form a steel sheet having a uniform waveform by sequentially pressing a part of a flat steel sheet and an adjacent part of the flat steel sheet. A waveform steel sheet molding apparatus comprises a front lower mold(10) including a first molding unit(11) and a second molding unit(12), which has a valley extending beyond that of the first molding unit. An upper mold(20) forms a waveform in a flat steel sheet by pressing the flat steel sheet placed in the front surface lower mold. An operating strip bar(40) includes a first size completing unit(41) and a second size completing unit(42) having a waveform corresponding to the waveform in a waveform steel sheet. A rear lower mold(30) includes a first size completing die(31) and a second size completing die(32), which has a formation corresponding to the second size completing unit.

Description

Corrugated Steel Sheet Forming Equipment {WAVEFORM STEEL SHEET MOLDING APPARATUS}

1 is a perspective view of a corrugated steel sheet forming apparatus according to an embodiment of the present invention,

FIG. 2 is a cross-sectional view of the corrugated sheet metal forming apparatus of FIG. 1 forming a primary waveform and a primary extra waveform on a flat steel sheet; FIG.

3 is a cross-sectional view showing a state in which the flat plate of FIG.

FIG. 4 is a cross-sectional view illustrating forming a secondary waveform on a flat steel plate moved in the drawing direction of FIG. 3.

5 is a cross-sectional view according to II of FIG. 1,

6 is a cross-sectional view of a conventional corrugated sheet metal forming apparatus.

<Description of Major Symbols in Drawing>

1: Corrugated sheet metal forming apparatus 10: Front lower mold

11: first forming molding part 12: second forming molding part

20: upper mold 21: the first forming punch

22: second forming punch 30: the bottom lower mold

31: first dimension completion die 32: second dimension completion die

40: operation strip bar 41: first dimension completion portion

42: second dimension completion part 50: spring plate

51: strip bar bolt 60, 61, 62: pressure unit

The present invention relates to a corrugated sheet metal forming apparatus, and more particularly, to form a corrugation by pressing a predetermined region of the flat steel plate in sequence, and the flat steel adjacent to any part of the flat steel sheet in a state where the pressing is preceded by any part of the flat steel sheet It is a corrugated sheet metal forming apparatus which prevents the waveform formed in any part of the flat steel sheet from being deformed by pressing the other portion of the plate.

The technique of manufacturing a corrugated steel sheet in which a corrugated sheet is formed by pressing the flat steel sheet with a mold mechanism has been widely used. Here, in general, assuming that the length of a flat steel sheet having a short length, that is, for example, about 5 m to 8 m in length, a mold mechanism capable of simultaneously forming a wave form by pressing a 5 m to 8 m flat steel sheet Could be used.

On the other hand, when forming a waveform on a long flat steel plate of about several tens of meters in length, as shown in Figure 6, the mold mechanism 100 for dividing the flat steel plate into a predetermined portion and forming a waveform on a predetermined portion of the flat steel sheet ), And then, at predetermined time intervals, predetermined portions of the flat steel sheet were sequentially introduced into the mold mechanism 100, and predetermined portions of the flat steel sheet to be drawn were pressed to form waveforms sequentially.

However, when the waveform is sequentially formed, a portion of the waveform formed by the pressing in advance is first drawn by the dragging of the mold mechanism 100 in the direction in which the mold mechanism 100 is located by the pressure of the pressing forming the waveform. There was a problem with the transformation.

In order to solve the above problems, the present invention forms a waveform by sequentially pressing a certain region of the flat steel plate, the other part of the flat steel plate adjacent to any part of the flat steel plate in the state prior to pressing on any part of the flat steel plate It is an object of the present invention to provide a corrugated steel sheet forming apparatus which prevents deformation of a waveform formed on a portion of a flat steel sheet by following pressing.

The above object is a corrugated steel sheet forming apparatus for forming a corrugated steel sheet by forming a waveform on the incoming flat steel sheet according to the present invention, the at least one first forming molding recessed to correspond to the shape of the waveform formed on the corrugated steel sheet Wealth; The front lower mold having the second forming molding portion provided on the side opposite to the pulling direction in which the flat plate is drawn in from the first forming molding portion and the length of the cross section in the pulling direction is longer than the first forming molding portion. and; A first forming punch having a shape complementary to the first forming part and a second forming punch having a shape complementary to the second forming part, and pressing the flat steel plate positioned in the front lower mold to corrugate An upper mold forming a mold; And a waveform corresponding to the shape of the waveform formed on the corrugated steel sheet, the first dimension completing portion provided adjacent to the inlet direction side of the upper mold, and a waveform corresponding to the shape of the waveform formed on the corrugated steel sheet. An actuating strip bar having a second dimension completion portion provided on the side of the first dimension completion portion in the retracting direction; The corrugated steel sheet is formed by pressing the actuating strip bar between the front lower mold and the upper mold with the corrugation formed on the flat steel sheet interposed therebetween, and is formed adjacent to the front lower mold side, and the first dimension. A first dimension completion die recessed to form an extra space between the first dimension completion part and the first dimension completion die on the front lower mold side when the finished part is pressed, and provided on the inlet direction side of the first dimension completion die; It is achieved by a corrugated sheet metal forming apparatus comprising a bottom lower mold having a second dimension completion die having a shape complementary to the dimension completion portion.

Here, the floor located on the opposite side of the pulling direction of the second forming part may be formed higher than the height of the floor formed by the second forming part and the first forming part.

Here, the upper mold and the spring strip to be installed in the upper mold and the operation strips to move up and down at the same time the operation strips; A strip bar bolt connected between the spring plate and the actuating strip bar to move up and down between the actuating strip by a position equal to the upper mold and a position protruding downward from the upper mold; It may be further provided between the spring plate and the operation strip bar, the pressing unit having an elasticity to press the operation strip bar downward.

Here, the pressure unit may be provided with a spring.

Here, the spring may be installed so that the magnitude of the pressing force to press down increases from the opposite side of the portion adjacent to the upper mold of the operation strip bar toward the opposite side of the pulling direction.

Here, a plurality of springs are installed in the valley direction of the first dimension completion part, the installed springs constitute a plurality of rows, and the first dimension toward the inlet direction in a portion adjacent to the upper mold of the operation strip bar. The number installed in the valley direction of the completion portion and the number of rows formed by the spring can be installed to decrease.

Hereinafter, with reference to the accompanying drawings will be described in detail a waveform sheet forming apparatus according to an embodiment of the present invention.

Corrugated steel sheet forming apparatus 1 according to an embodiment of the present invention is the upper mold 20, the operation strip bar 40, the lower front mold 10 and the lower rear mold 30 as shown in Figs. ).

The front lower mold 10 includes a first forming part 11 and a second forming part 12.

Here, the first forming molding portion 11 is a corrugated steel sheet formed by pressing the flat steel plate downward on the upper portion of the flat steel plate seated on the upper portion of the first forming punch portion 11 to be described later It is recessed to correspond to the shape of the waveform. At this time, the waveform of the flat steel plate formed by the first forming part 11 and the first forming punch 21 will be referred to as a primary waveform (F).

In addition, the second forming molding part 12 may form a waveform by pressing the flat steel plate downward on the upper part of the flat steel plate seated on the upper part of the second forming punching part 12 to be described later. Is depressed. At this time, the waveform of the flat plate formed by the second forming portion 12 and the second forming punch 22 will be referred to as the primary spare waveform (E). Here, the primary redundant waveform E is formed to have a longer length of the valleys than the primary waveform F. Accordingly, the second forming part 12 has a length of the bone in the cross section in the direction in which the flat plate is drawn, that is, the length of B shown in FIG. 2, that is, the length of the bone of the first forming part 11. It is recessed to be longer than the length of C shown in FIG. And, the position of the second forming portion 12 is located adjacent to the side opposite to the direction in which the flat plate is drawn in the first forming portion 11, as shown in FIGS.

In addition, the second forming portion 12 according to the embodiment of the present invention is the height of the floor 13 located on the side opposite the direction in which the flat plate is drawn in the second forming portion 12 and the first forming portion (11) It is formed higher than the height of the floor 14 formed by. Accordingly, the length of the primary extra waveform E is longer than the primary waveform F.

Accordingly, the front lower mold 10 has a first forming part 11 and a second forming part 12 formed side by side, and the first forming punch 21 and the second forming punch of the upper mold 20 ( 22) is positioned below the upper mold 20 to form a waveform on the flat plate when descending at the same time.

The upper mold 20 includes a first molding punch 21 and a second molding punch 22.

Here, the first forming punch 21 has a shape complementary to the first forming portion 11 to form the primary waveform (F), the upper portion of the flat plate portion seated on the first forming portion (11) Move upward and downward to press down the flat plate.

In addition, the second forming punch 22 has a shape complementary to the second forming part 12 to form the primary extra waveform E, and the flat sheet portion seated on the second forming part 12 is formed. It moves up and down to press down a flat plate from an upper part. Here, as shown in FIG. 2, the primary extra waveform E and the primary waveform F have different valley depths, but the thickness of the flat steel plate on which the waveform is formed should be the same, so that the second forming punch 22 is formed. Is larger than the first forming punch 21 is provided in size.

Accordingly, the upper mold 20 is provided with a first forming punch 21 and a second forming punch 22 so that the first forming punch 21 and the second forming punch 22 can move up and down at the same time. Therefore, when generating a waveform on the flat plate, the first forming punch 21 and the second forming punch 22 presses down the flat plate by the lowering of the upper die 20, the primary waveform (F) and 1 The difference redundant waveform E can be formed simultaneously.

Meanwhile, in the embodiment according to the present invention, the first forming molding part 11 and the first molding punch 21 are provided as one example, but a plurality of first forming parts 11 and a plurality of primary waveforms F are simultaneously provided on a flat plate. Of course it can form.

The lower back mold 30 includes a first dimension die die 31 and a second dimension die die 32.

Here, the first dimension completion die 31 is recessed so that the primary extra waveform E of the flat steel plate formed by the second forming punch 22 and the second forming molding part 12 is seated, and the flat steel sheet is retracted. In the direction adjacent to the first forming part 11. Then, the recessed portion D to the floor located in the direction in which the first forming part 11 is positioned around the valley of the first dimension-forming die 31 is further recessed than the first forming part 11. . Therefore, an extra space is formed between the first dimension completion part 41 and the first dimension completion part 41 when pressing the first dimension completion part 41 to be described later, and the bottom of the first extra waveform E of the flat steel plate is the first dimension completion. It is formed so as not to directly contact the die 31.

In addition, the second dimension completion die 32 is a state in which the primary waveform F of the flat steel plate formed by the first forming part 11 and the first molding punch 21 is moved in the direction in which the flat steel sheet is retracted. Recessed to seat at

Accordingly, the lower rear mold 30 has a first dimension completion die 31 and a second dimension completion die 32 formed side by side, and the first dimension completion portion 41 and the second dimension of the operation strip bar 40. The completion part 42 is located below the operation strip bar 40 so as to press the primary waveform E and the primary redundant waveform F of the flat steel plate which are simultaneously lowered and seated.

The actuating strip bar 40 includes a first dimension completion part 41 and a second dimension completion part 42.

When the first dimension completion unit 41 generates the secondary waveform G, the first dimension completion die 31 presses down the primary spare waveform E seated on the first dimension completion die 31. Go up and down at the top of the. Here, the first dimension completion portion 41 is provided in a shape equivalent to the second dimension completion portion 42.

Therefore, before generating the secondary waveform G, the primary redundant waveform E of the flat steel plate seated on the first dimension completion die 31 is partially generated while the secondary waveform G is generated. By compensating for the portion where the difference waveform G is generated, the length of the valleys is shortened. At the same time, the primary surplus waveform E is deformed, but is deformed into the primary waveform F by being pressed by the first dimension completion part 41. Here, the portion of the first dimension completion die 31 which is further recessed than the first forming part 11 prevents the settled primary extra waveform E and the frictional force from occurring, thereby reducing the secondary waveform G. At the time of generation, a part of the valley of the primary extra waveform E is easily compensated to the part of the flat plate from which the secondary waveform G is generated.

The operation strip bar 40 is provided with a first dimension completion part 41 and a second dimension completion part 42 such that the first dimension completion part 41 and the second dimension completion part 42 can move up and down simultaneously. do. Therefore, the first and second dimension completion parts 41 and 42 simultaneously lower and press the primary waveform F and the primary redundant waveform E formed on the flat steel plate.

The second dimension completion portion 42 is formed to correspond to the second dimension completion die 32, and when the secondary waveform (G) to be described later generated 1 of the flat steel plate seated on the second dimension completion die 32 It moves up and down to press down the difference waveform F. FIG. Here, the secondary waveform (G) is the primary waveform on the flat plate by the first forming punch 21, the first forming molding portion 11, the second forming punch 22, the second forming molding portion 12 When (F) and the primary extra waveform E are formed, the flat plate is moved in the inlet direction so that the same waveform as the primary waveform F and the primary extra waveform E is formed on the flat portion of the flat plate. It means that it is formed again by the molding punch 21, the first forming molding portion 11, the second forming punch 22, the second forming molding portion 12.

Meanwhile, the corrugated sheet metal forming apparatus 1 according to the present invention further includes a spring plate 50, a strip bar bolt 51, and a pressing unit 60, 61, 62, as shown in FIGS. 2 to 4. can do.

The spring plate 50 is provided with the operation strip bar 40 and the upper mold 20 so that the operation strip bar 40 and the upper mold 20 can move up and down, and the spring plate 50 is used to move the device. A unit (not shown) capable of lifting and lowering, such as a hydraulic cylinder or a motor, which is mainly used, is mounted.

The strip bar bolt 51 is installed between the spring plate 50 and the actuating strip bar 40, so that the actuating strip bar 40 is equal to the upper mold 20 with respect to the spring plate 50, and the upper part. To move up and down between the positions protruding downward from the mold 20.

The pressurizing unit (60, 61, 62) is elastic and is installed between the operating strip bar 40 and the spring plate 50, the upper mold 20 and the operating strip bar 40, respectively, the front lower mold (10) In a state spaced apart from the lower mold 30 and a predetermined distance, the operating strip bar 40 is pressed downward so that the operation strip bar 40 protrudes downwardly than the upper mold 20.

In the embodiment according to the present invention, the pressurizing units 60, 61, and 62 are provided as springs as an example, but may be provided as pneumatic cylinders.

Therefore, when the spring plate 50 is lowered to generate the secondary waveform G, the first dimension completion part 41 and the second dimension before the first forming punch 21 and the second forming punch 22. Completion unit 42 presses the primary waveform F and the primary redundant waveform E of the flat steel plate. In addition, when the first forming punch 21 and the second forming punch 22 generate the secondary waveform G on the flat steel plate, the pressing units 60, 61, and 62 are formed of the first dimension completion part 41. And the first dimension completion part 41 and the second dimension completion part 42 are compressed so that the second dimension completion part 42 is not protruded from the first molding punch 21 and the second molding punch 22. The first waveform F and the first redundant waveform E are further pressed.

On the other hand, when generating the secondary waveform (G), the first extra waveform (part of the waveform formed by the first molding punch 21 and the first forming molding portion 11 by the pressing of the first molding punch 21 ( More than a portion of the E) is compensated, a phenomenon that the waveform is not produced uniformly may occur.

Therefore, in the present invention, the pressure unit 60, 61, 62 is to increase the magnitude of the pressing force to the downward pressure from the opposite side of the portion adjacent to the upper mold 20 of the operation strip bar 40 toward the opposite side of the flat plate retracting direction Is installed. Here, the method of increasing the pressing force may be a method of varying the type of the pressurizing units 60, 61, 62, but in this embodiment, the method of increasing the pressing force by increasing the number of the pressurizing units 60, 61, 62 is described. Adopted. That is, a plurality of pressurizing units 60, 61, 62 are installed in the valley direction of the first dimension completion part 41, and the installed pressurizing units 60, 61, 62 constitute a plurality of rows, and operate strip bars ( 40, the number of installed in the direction of the valley of the first dimension completion portion 41 and the number of heat formed by the pressing unit (60, 61, 62) decreases toward the inlet direction of the flat plate in the portion adjacent to the upper mold (20) Is installed.

Accordingly, the pressing units 60, 61, 62 in the present invention is the first forming punch centering the valleys of the first dimension-completed portion 41 of the operation strip bar 40, as shown in Figs. The second pressurizing unit 61 installed at the portion adjacent to the second dimension-completed portion 42 centered on the valley of the first pressurizing unit 60 and the first dimension-completed portion 41 installed at the portion adjacent to the 21. ), And a third pressurizing unit 62 respectively installed at a portion where the second dimension completion part 42 is located.

And, as shown in FIG. 5, the first pressurizing unit 60 is installed in a larger number than the second pressurizing unit 61 and the third pressurizing unit 62, and the operation strip in which the second pressurizing unit 61 is located. Second dimension completion of the actuated strip bar 40 in which the portion adjacent to the second dimension completion part 42 and the third pressing unit 62 are located around the valley of the first dimension completion part 41 of the bar 40. The pressing force is increased more than the portion where the part 42 is located. Therefore, when the secondary waveform G is generated, the first pressurizing unit 60 is a portion formed by the first molding punch 21 and the first forming part 11 to form a waveform of the primary extra waveform E. The pressing force of the first dimension completed portion 41 is increased to be partially drawn in and compensated for.

In addition, the number of the second pressurizing unit 61 in the operation strip bar 40 is greater than the third pressurizing unit 62 may be installed to further increase the pressing force of the first dimension completed portion 41.

Hereinafter, an operation process of the corrugated sheet metal forming apparatus 1 according to an exemplary embodiment of the present invention will be described in detail with reference to FIGS. 2 to 3.

As shown in FIG. 2, the flat plate is pressed by the first forming punch 21 and the second forming punch 22 to form a primary waveform F and a primary extra waveform E. As shown in FIG. As shown in FIG. 3, the flat steel plate moves in the inlet direction of the flat steel plate so that the primary waveform F is positioned on the upper portion of the first dimension completion die 31, and the primary extra waveform E is It is positioned and seated on top of the second dimensionally complete die 32. In this case, a flat portion of the flat plate is positioned on the first forming part 11 and the second forming part 12.

As the spring plate 50 descends, the first dimension completion part 41 protrudes from the first molding punch 21 and the second molding punch 22 by the pressure units 60, 61, and 62. The second dimension completion part 42 contacts the primary waveform F and the primary redundant waveform E before the first forming punch 21 and the second forming punch 22 to start pressurization.

And, as shown in Figure 4, the first forming punch 21 and the second forming punch 22 presses the flat portion of the flat steel plate. Then, in the state where the flow of the flat steel plate is prevented by the first dimension completion portion 41 pressed against the primary waveform F first, the primary extra waveform (which has been seated on the second dimension completion die 32) Part of E) is compensated as the first forming punch 21 is drawn toward the pressing portion of the flat sheet. In this case, the primary extra waveform E is deformed, but has the same waveform as the primary waveform F by the second dimension completion part 42 pressed from the upper side.

Then, by repeating this process, the waveform is continuously and evenly formed on the flat steel plate by the corrugated steel sheet forming apparatus 1, and then, the first formed waveform is transformed into a waveform not required by the user by the formed waveform. You can prevent it.

Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the present invention may be modified without departing from the spirit or principles of the invention. . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

As described above, the corrugated steel sheet forming apparatus according to the present invention by pressing a portion of the flat steel plate in order to form a waveform, the flat steel plate adjacent to any part of the flat steel plate in the state prior to pressing on any part of the flat steel plate By post-pressing to other parts of the waveform is prevented from being deformed in any portion of the flat plate has the effect that can be formed to form a corrugated steel sheet is formed evenly.

Claims (6)

In the corrugated steel sheet forming apparatus for forming a corrugated steel sheet by forming a waveform on the flat plate to be inserted, At least one first forming part recessed to correspond to a shape of a waveform formed in the corrugated steel sheet; The front lower mold having the second forming molding portion provided on the side opposite to the pulling direction in which the flat plate is drawn in from the first forming molding portion and the length of the cross section in the pulling direction is longer than the first forming molding portion. and; A first forming punch having a shape complementary to the first forming part and a second forming punch having a shape complementary to the second forming part, and pressing the flat steel plate positioned in the front lower mold to corrugate An upper mold forming a mold; And a waveform corresponding to the shape of the waveform formed on the corrugated steel sheet, the first dimension completing portion provided adjacent to the inlet direction side of the upper mold, and a waveform corresponding to the shape of the waveform formed on the corrugated steel sheet. An actuating strip bar having a second dimension completion portion provided on the side of the first dimension completion portion; The corrugated steel sheet is formed by pressing the actuating strip bar between the front lower mold and the upper mold with the waveform formed on the flat steel sheet therebetween, and is formed adjacent to the front lower mold side to complete the first dimension. A first dimension die which is recessed to form an extra space between the first dimension completion part on the front lower mold side when the part is pressed, and the second tooth which is provided on the inlet direction side of the first dimension completion die; A corrugated steel sheet forming apparatus, comprising: a lower lower mold having a second dimension-compacting die having a shape complementary to a water-receiving portion. The method of claim 1, Corrugated steel sheet forming apparatus, characterized in that the floor located on the opposite side of the inlet direction of the second forming molded part is formed higher than the height of the floor formed by the second forming and the first forming part. The method of claim 2, A spring plate on which the upper mold and the operating strip are installed to move up and down at the same time; A strip bar bolt connected between the spring plate and the actuating strip bar to move up and down between the actuating strip by a position equal to the upper mold and a position protruding downward from the upper mold; Corrugated steel sheet forming apparatus is installed between the spring plate and the operation strip bar, further comprising a pressing unit having an elasticity to press the operation strip bar downward. The method of claim 3, Corrugated steel sheet forming apparatus, characterized in that the pressing unit is provided with a spring. The method of claim 4, wherein Wherein the spring is a waveform sheet forming apparatus, characterized in that the size of the pressing force to be pressed downwardly increases from the opposite side of the portion adjacent to the upper mold of the operation strip bar toward the opposite side of the pulling direction. The method of claim 5, A plurality of springs are installed in the direction of the valley of the first dimension completion part, the installed springs constitute a plurality of rows, and the first dimension completion part gradually goes toward the retracting direction in a portion adjacent to the upper mold of the operation strip bar. Corrugated steel sheet forming apparatus, characterized in that the number is installed in the direction of the valley and the number of rows formed by the spring is reduced.

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