TWI571382B - Sheet metal forming system - Google Patents

Description

Sheet metal forming system

The invention relates to a metal sheet forming system, in which a movable fluid input unit can be gradually brought close to a metal sheet to improve the efficiency of sheet metal forming.

Please refer to Figure 1 for a schematic diagram of the construction of a conventional sheet metal forming system. As shown, the conventional sheet metal forming system 10 includes a sealing die 11 and a molding die 13 in which a sealing cavity 111 is disposed in the sealing die 11, and a molding cavity 131 is disposed in the molding die 13.

The sealing die 11 is connected to a gas boosting pump 153 through a gas pipe 151, and the gas boosting pump 153 can feed the gas 14 into the sealing cavity 111 via the gas pipe 151. Further, an electric heating pipe 17 is disposed around the sealing die 11 and the molding die 13, and the electric heating pipe 17 can be used to heat the sealing die 11 and the molding die 13.

In practical use, the metal sheet 15 can be placed between the sealing mold 11 and the molding die 13, and the metal sheet 12 can be heated by the electric heating tube 17. After the metal sheet 12 reaches a predetermined temperature, the gas 14 can be further transported into the sealed chamber 111 through the gas boosting pump 153, and the gas pressure Pa in the sealed chamber 111 is increased. The gas pressure P in the sealed chamber 111 acts on the heat-softened metal sheet 12, and the softened metal sheet 12 is attached to the inner surface of the molding cavity 131 by the action of the gas pressure Pa, and becomes a metal molded piece 121.

The appearance of the metal molded part 121 after press molding is formed and molded The shape of the cavity 131 is similar, and in the actual application, the molding die 13 having the molding cavity 131 having a different shape can be used to fabricate the metal molding 121. However, when the geometry of the molding cavity 131 is complicated, or the depth H of the molding cavity 131 is deep, the difficulty of press forming the metal plate 12 is increased, and the appearance of the metal molding 121 is likely to cause defects, and thus the product The yield has a direct impact.

An object of the present invention is to provide a sheet metal forming system in which a movable fluid input unit can be displaced relative to a seal mold during compression molding of a metal sheet between a seal mold and a mold, and the seal mold is compressed. The fluid pressure inside the sealed chamber, thereby improving the efficiency of press forming the metal sheet.

An object of the present invention is to provide a sheet metal forming system in which a movable fluid input unit can be opposed to a sealing mold, a molding die, and/or in a process of press molding a metal sheet between a sealing mold and a molding die. The displacement of the metal sheet allows the input hole on the movable fluid input unit to be closer to the metal sheet extending along the edge, and the fluid ejected from the input hole acts on the metal sheet and facilitates the pressure forming of the metal sheet. Yield.

An object of the present invention is to provide a sheet metal forming system in which a movable fluid input unit disposed on a sealing mold can be displaced into a molding chamber and pressure the metal sheet with a fluid pressure so that the metal sheet is attached to the molding. The inner surface of the cavity forms a metal former.

To this end, an embodiment of the present invention provides a sheet metal forming system comprising: a molding die having at least one molding cavity therein; a sealing die having at least one sealing cavity therein, wherein the molding die is engaged with the sealing die, The molding cavity will be opposite to the sealing cavity; and a movable fluid input unit comprising one or more input holes, wherein the movable fluid input unit is located on the sealing die, and the movable fluid is delivered The input hole of the inlet unit is located in the sealing cavity or the molding cavity, and the movable fluid input unit is displaceable relative to the sealing die and changes the distance between the movable fluid input unit and the molding die.

An embodiment of the present invention provides a sheet metal forming system comprising a metal sheet between a molding die and a sealing die and covering the molding cavity. When the movable fluid input unit is displaced, the input hole and the metal plate are changed. spacing.

An embodiment of the present invention provides a sheet metal forming system in which the volume of the sealed chamber is changed when the movable fluid input unit is displaced.

An embodiment of the present invention provides a sheet metal forming system including a driving unit connected to a movable fluid input unit and driving the movable fluid input unit to be displaced relative to the sealing mold.

An embodiment of the present invention provides a sheet metal forming system including a fluid pressurizing unit connected to a movable fluid input unit via one or more input tubes, and delivering fluid to the sealed chamber via the input tube and the input hole.

An embodiment of the invention provides a sheet metal forming system comprising one or more heating units located in a sealing mold, a forming mold or a movable fluid input unit.

An embodiment of the present invention provides a sheet metal forming system in which a movable fluid input unit is tightly coupled to a sealing mold, and the sealing chamber is maintained in a sealed state when the movable fluid input unit is displaced relative to the sealing mold.

An embodiment of the present invention provides a sheet metal forming system in which a front end of a movable fluid input unit is similar in shape to a molding cavity.

An embodiment of the present invention provides a sheet metal forming system in which a portion of the movable fluid input unit is movable to the inside of the molding cavity.

An embodiment of the present invention provides a sheet metal forming system in which some input holes of a movable fluid input unit respectively blow fluids in different directions.

10‧‧‧Metal sheet forming system

11‧‧‧ Sealing Die

111‧‧‧ sealed cavity

12‧‧‧Metal sheet

13‧‧‧Molding

131‧‧‧Molding cavity

14‧‧‧ gas

151‧‧‧ gas pipeline

153‧‧‧ gas booster pump

17‧‧‧Electric heating tube

20‧‧‧Metal sheet forming system

21‧‧‧ Sealing Die

211‧‧‧ sealed cavity

22‧‧‧Metal sheet

221‧‧‧Metal molded parts

23‧‧‧Forming mould

231‧‧‧Forming cavity

25‧‧‧ movable fluid input unit

251‧‧‧ input hole

27‧‧‧ Fluid booster unit

271‧‧‧ input tube

30‧‧‧Metal sheet forming system

300‧‧‧Metal sheet forming system

31‧‧‧ Sealing Die

311‧‧‧ sealed cavity

33‧‧‧Molding

331‧‧‧Forming cavity

333‧‧‧Depression

35‧‧‧ movable fluid input unit

351‧‧‧ input hole

36‧‧‧Drive unit

371‧‧‧Input tube

38‧‧‧Output hole

39‧‧‧heating unit

1 is a schematic structural view of a conventional sheet metal forming system; FIG. 2 is a schematic structural view of an embodiment of a sheet metal forming system of the present invention; and FIG. 3 is a schematic structural view of still another embodiment of the sheet metal forming system of the present invention. 4 is a schematic structural view of still another embodiment of the sheet metal forming system of the present invention; FIGS. 5 to 8 are respectively schematic views showing an operation flow of an embodiment of the sheet metal forming system of the present invention; and FIG. 9: A schematic view of the construction of a further embodiment of the sheet metal forming system of the present invention.

While the invention has been described by way of illustrations in the drawings The drawings and the detailed description of the present invention are intended to be in a singular, and the detailed description is only a limitation of the specific form and is not a limitation of the invention. And their permutations are within the scope of the invention.

Please refer to FIG. 2, which is a schematic structural view of an embodiment of a sheet metal forming system of the present invention. As shown, the sheet metal forming system 20 includes a sealing mold 21, a molding die 23, and a movable fluid input unit 25, wherein at least one sealing cavity 211 is disposed in the sealing die 21, and at least one molding cavity is disposed in the molding die 23. 231, and the movable fluid input unit 25 includes one or more input holes 251.

The movable fluid input unit 25 is located on the sealing die 21, and the input hole 251 of the movable fluid input unit 25 is located in the sealing cavity 211 or the molding cavity 231. The movable fluid input unit 25 is displaceable relative to the seal mold 21, and during the displacement of the movable fluid input unit 25, the movable fluid input sheet will be changed. The distance between the element 25 and the forming die 23 and/or the forming cavity 231.

The fluid pressurizing unit 27 is connected to the movable fluid input unit 25 through one or more input tubes 271, and delivers fluid into the sealed chamber 211 via the input tube 271 and the input hole 251, thereby increasing the fluid pressure in the sealed chamber 211. P. The fluid of the present invention may be a liquid, a gas or an inert gas, and in order to improve the convenience in the description, a gas is used as an embodiment in the description of the subsequent embodiments of the present invention.

The metal sheet 22 can be placed on the molding die 23 in practical use, and the metal sheet 22 is covered by the molding cavity 231 in the molding die 23. After the metal sheet 22 is determined to be in the proper position of the molding die 23, the sealing mold 21 and the molding die 23 can be joined. The bonded sealing cavity 211 faces the molding cavity 231, and the metal plate 22 is located in the molding die 23 and Between the sealing dies 21 .

Then, the sealing mold 21 and the molding die 23 are further pressed, so that the metal plate 22 is respectively adhered to the sealing die 21 and the molding die 23, and a closed cavity is formed between the metal plate 22 and the sealing cavity 211, and The metal plate 22 and the molding cavity 231 form another closed cavity.

After the completion of the adhesion of the metal sheet 22, the sealing mold 21, and the molding die 23, the fluid pressurizing unit 27 can deliver the gas 14 to the sealed chamber 211 via the input pipe 271 and the input hole 251. Since the sealed chamber 211 is a closed cavity, when the gas 14 is delivered to the sealed chamber 211, the gas pressure P inside the sealed chamber 211 is increased, and the gas pressure P is caused to act on the metal sheet 22.

The movable fluid input unit 25 of the present invention is in tight engagement with the sealing die 21, so when the movable fluid input unit 25 is displaced relative to the sealing die 21, the sealing die 21, the metal sheet 22 and the movable fluid input The sealed chamber 211 between the units 25 will remain in a sealed condition. Further, there is a molding cavity 231 between the metal plate 22 and the molding die 23, so that when the metal plate 22 is subjected to the gas pressure P, it deforms toward the molding cavity 231 and gradually expands into the inside of the molding cavity 231.

In the process of forming the metal sheet 22, the movable fluid is lost. The inlet unit 25 is displaceable relative to the sealing die 21 to vary the volume of the sealed chamber 211 and/or the distance between the input aperture 251 of the movable fluid input unit 25 and the sheet metal 22.

In practical use, the movable fluid input unit 25 can be displaced relative to the sealing mold 21 and the molding die 23 while the fluid pressurizing unit 27 delivers the gas 14, and when the movable fluid input unit 25 moves in the direction of the molding die 23, The volume of the sealed chamber 211 will be compressed and the gas pressure P in the sealed chamber 211 will rise. In this way, the gas pressure P acting on the metal sheet 22 can be increased, and the metal sheet 22 is bonded to the inner surface of the molding cavity 231 to complete the molding step of the metal sheet 22.

In addition, as the movable fluid input unit 25 moves in the direction of the molding die 23, the distance between the input hole 251 and the metal plate 22 is also shortened, so that the gas ejected from the input hole 251 acts on the metal plate 22, which is more advantageous. The metal sheet 22 is attached to the inner surface of the molding cavity 231.

In an embodiment of the invention, the movable fluid input unit 25 is movable to the interior of the molding cavity 231 such that the input aperture 251 is closer to the expanded sheet metal 22 to further enhance the efficiency of the sheet metal 22 molding.

Please refer to FIG. 3, which is a schematic structural view of still another embodiment of the sheet metal forming system of the present invention. As shown, the sheet metal forming system 30 includes a sealing die 31, a molding die 33, and a movable fluid input unit 35. The sealing die 31 is provided with at least one sealing cavity 311, and at least one molding cavity is disposed in the molding die 33. The movable fluid input unit 35 is provided with a plurality of input holes 351.

In an embodiment of the invention, the sheet metal forming system 30 may also include one or more heating units 39, wherein the heating unit 39 may be disposed in the portion of the sealing mold 31, the molding die 33, and/or the movable fluid input unit 35 or All around. The heating unit 39 can be used to heat the sealing mold 31, the molding die 33, and/or the movable fluid input unit 35, and transfer the heat to the metal sheet 22 between the sealing mold 31 and the molding die 33, so that the metal plate 22 follows The temperature rises and softens.

In an embodiment of the invention, the sheet metal forming system 30 further includes one or more drive units 36, wherein the drive unit 36 is coupled to the movable fluid input unit 35 and drives the movable fluid input unit 35 relative to the seal mold 31 and/or Or the molding die 33 is displaced.

In the embodiment of the present invention, the movable fluid input unit 35 includes a plurality of input holes 351, wherein each of the input holes 351 can face in different directions, so that the gas 14 ejected by each of the input holes 351 acts on each different metal plate 22. The area and the sheet metal 22 are bonded to the inner surface of the molding cavity 331.

In practical application, the front end of the movable fluid input unit 35 can be approximated to the geometry of the molding cavity 331, wherein the volume of the front end of the movable fluid input unit 35 is slightly smaller than the molding cavity 331, so that part of the movable fluid input unit 35 enters the molding. Inside the cavity 331. Further, one or more input holes 351 may be provided on the surface of part or all of the movable fluid input unit 35, respectively. For example, each of the input holes 351 blows out the gas 14 in different directions, and causes the ejected gas 14 to respectively act on the metal plate 22 of different regions, so that the metal plate 22 can be smoothly fitted on the inner surface of the molding cavity 331 and formed. A metal molded part 221 is shown in Fig. 4.

In an embodiment of the invention, the sheet metal forming system 300 can also include at least one output aperture 38, wherein the output aperture 38 can be located in the sealing mold 31 and/or the movable fluid input unit 35, and the sealed chamber can be sealed via the output aperture 38. Some or all of the fluid in 311 is discharged. For example, when the movable fluid input unit 35 is displaced toward the molding die 33, a portion of the fluid in the sealed cavity 311 can be discharged. By discharging the fluid in the portion of the sealed chamber 311, the sealed chamber 311 can maintain a certain fluid pressure during displacement of the movable fluid input unit 35 and facilitate the movement of the movable fluid input unit 35 in the direction of the molding die 33. Of course, after the fabrication of the metal molded part 221 is completed, part or all of the fluid in the sealed cavity 311 can be discharged through the output hole 38, and then the sealing die 31 is separated from the molding die 33.

For convenience of explanation, in the above embodiment of the present invention, the movable fluid input unit 35 is located on the sealing mold 31 and is movable relative to the sealing mold 31. The displacement is performed to change the spacing between the movable fluid input unit 35 and the molding die 33. However, in various embodiments, the movable fluid input unit 35 may also be located on the forming die 33 and may be displaced relative to the forming die 33 to vary the spacing between the movable fluid input unit 35 and the sealing die 31.

Please refer to FIG. 5 to FIG. 8 , which are respectively schematic diagrams showing the operation flow of an embodiment of the metal sheet forming system of the present invention. As shown, the metal sheet 22 is placed on the molding die 33 located below, and the metal sheet 22 is completely covered with the molding cavity 331. In an embodiment of the present invention, the metal sheet 22 may be heated in advance, and then the metal sheet 22 is placed between the sealing mold 31 and the molding die 33 to facilitate the subsequent molding of the heat-softened metal sheet 22, such as Figure 5 shows.

After the metal plate 22 is positioned at an appropriate position of the molding die 33, the bonding of the sealing die 31 and the molding die 33 can be performed. The sealing die 31 can be placed over the forming die 33 and/or the metal sheet 22 during the joining process such that the sealing cavity 311 faces the forming cavity 331.

The spacing between the sealing die 31 and the molding die 33 is adjusted such that the sealing die 31 is in contact with the metal sheet 22 and/or the molding die 33, and then the sealing die 31 and/or the molding die 33 are pressed so that the metal plate 22 and the sealing plate are respectively sealed. The mold 31 and the molding die 33 are in close contact, and the sealing cavity 311 and the molding cavity 331 form a closed cavity as shown in Fig. 6.

The fluid pressurizing unit 27 can deliver the gas 14 to the sealed chamber 311 via one or more input tubes 371 and an input hole 351. Since the sealed chamber 311 is a closed chamber, the gas 14 is delivered to the sealed chamber 311, and The gas pressure P inside the sealed chamber 311 is gradually increased.

In an embodiment of the present invention, the gas pressure P in the sealed chamber 311 acts on the heat-softened metal sheet 22, so that the softened metal sheet 22 extends in the direction of the molding cavity 331 due to the gas pressure P. Further, in order to improve the efficiency of forming the metal sheet 22, the metal sheet 22 may be heated by the heating unit 39 provided on the sealing mold 31, the molding die 33, and/or the movable fluid input unit 35.

The driving unit 36 drives the movable fluid input unit 35 to move in the direction of the molding die 33 and/or the molding cavity 331, which may be performed before, after or simultaneously with the deformation of the metal sheet 22. As the movable fluid input unit 35 is displaced in the direction of the molding die 33 and/or the molding cavity 331, the volume of the sealing cavity 311 is compressed, and the gas pressure P inside the sealing cavity 331 is increased to improve the forming of the metal sheet 22. Efficiency, as shown in Figure 7. Of course, in different embodiments, part of the gas in the sealed cavity 331 can also be led out through the output hole 38 provided on the sealing die 31 and/or the movable fluid input unit 35 to maintain the gas pressure P in the sealed cavity 331. And it is advantageous to drive the movable fluid input unit 35 to move in the direction of the molding die 33 and/or the molding cavity 331.

As the metal sheet 22 continues to extend in the direction of the molding cavity 331, the movable fluid input unit 35 is further driven through the driving unit 36 to gradually displace in the direction of the molding cavity 331 and/or the molding die 33, so that the movable fluid input unit 35 The input holes 351 are closer to the extended metal sheet 22, and the gas 14 ejected from the respective input holes 351 can continue to act on the metal sheet 22 as shown in Fig. 8.

Through the use of the movable fluid input unit 35, not only the metal plate 22 can be supplied with a large gas pressure P, but also the gas 14 ejected from the input hole 351 acts on the metal plate 22, so that the metal plate 22 is completely attached thereto. The inner surface of the molding cavity 331 forms the same shape, feature or texture as the inner surface of the molding cavity 331 and forms a metal molding 221 .

In an embodiment of the invention, the movable fluid input unit 35 is displaceable into the molding cavity 331, and the effect of forming the metal sheet 221 can be further improved. The appearance of the movable fluid input unit 35 may be further similar to the geometry of the molding cavity 231, and at least one input hole 351 may be disposed on the surface of the movable fluid input unit 35 in different directions to improve the efficiency of forming the metal sheet 35. .

In the actual application, each input hole 351 of the movable fluid input unit 35 can simultaneously eject the gas 14, and the gas 14 can be ejected at different time points, so that the plurality of output holes 351 on the movable fluid input unit 35 can be segmented and output. fluid, For example, when the movable fluid input unit 35 has not been displaced, only the input hole 351 located at the central portion ejects the gas 14, and when the movable fluid input unit 35 is displaced, the gas is ejected from the peripheral input port 351.

It can be seen from the above that the arrangement of the movable fluid input unit 25/35 enables the sheet metal forming system 20/30/300 of the present invention to be applied to various shapes of molding dies 23/33, especially as When the mold 33 includes at least one recess 333, the input hole 351 of the movable fluid input unit 35 may face the recess 333, and the fluid sprayed by the output hole 351 acts on the metal molded part of the recess 333. 221, whereby the metal molding 221 can be completely attached to the recess 333 in the molding cavity 331.

A connection as referred to in the present invention refers to a direct connection or an indirect connection between one or more objects or members, for example one or more intermediate connections may be present between one or more objects or members.

The words "may," and "changes" described in the system of the specification are not limitations of the invention. The technical terms used in the specification are mainly for the description of specific embodiments and are not intended to be limiting. The single quantifiers (such as one and the one) used in the specification may also be plural, unless explicitly stated in the contents of the specification. For example, a device referred to in the specification may include a combination of two or more devices, and one of the materials mentioned in the specification may include a mixture of a plurality of substances.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the variations, modifications, and modifications of the shapes, structures, features, and spirits described in the claims of the present invention. All should be included in the scope of the patent application of the present invention.

20‧‧‧Metal sheet forming system

21‧‧‧ Sealing Die

211‧‧‧ sealed cavity

22‧‧‧Metal sheet

23‧‧‧Forming mould

231‧‧‧Forming cavity

25‧‧‧ movable fluid input unit

251‧‧‧ input hole

27‧‧‧ Fluid booster unit

271‧‧‧ input tube

Claims (9)

A sheet metal forming system comprising: a molding die having at least one molding cavity therein; a sealing die having at least one sealing cavity therein, wherein the molding cavity is coupled to the sealing die when the molding die is engaged with the sealing die a sealing chamber opposite; a metal sheet positioned between the molding die and the sealing die and covering the molding cavity; and one or more movable fluid input units including one or more input holes, wherein the movable fluid input The unit is located in the sealing mold and is in close engagement with the sealing mold, and the input hole of the movable fluid input unit is located in the sealing chamber, and the movable fluid input unit is displaceable relative to the sealing mold, and is adjusted or changed a distance between the movable fluid input unit and the input hole and the metal plate and the molding die. The sheet metal forming system of claim 1, comprising at least one output hole located in the sealing mold or the movable fluid input unit for discharging the fluid in the inner portion of the sealed chamber. A sheet metal forming system according to claim 1, comprising a driving unit connected to the movable fluid input unit and driving the movable fluid input unit to be displaced relative to the sealing mold. The sheet metal forming system according to claim 1, comprising at least one fluid pressurizing unit connected to the movable fluid input unit via one or more input tubes, and conveying the fluid to the fluid through the input tube and the input hole The sealed chamber. A sheet metal forming system according to claim 1, comprising one or more heating units located in the sealing mold, the molding die, the movable fluid input unit or the above member. The sheet metal forming system of claim 1, wherein the movable fluid input unit comprises a plurality of output holes, and the plurality of output holes are Segment the output fluid. The sheet metal forming system according to claim 1, wherein a front end of the movable fluid input unit is similar in shape to the molding cavity. The sheet metal forming system of claim 1, wherein the movable fluid input unit of the portion is movable to the inside of the molding cavity. The sheet metal forming system of claim 1, wherein the input holes of the movable fluid input unit respectively blow fluid in a specified direction or in different directions.