WO2015163418A1 - Plate material machining device and plate material machining method - Google Patents

Plate material machining device and plate material machining method Download PDF

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Publication number
WO2015163418A1
WO2015163418A1 PCT/JP2015/062399 JP2015062399W WO2015163418A1 WO 2015163418 A1 WO2015163418 A1 WO 2015163418A1 JP 2015062399 W JP2015062399 W JP 2015062399W WO 2015163418 A1 WO2015163418 A1 WO 2015163418A1
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WO
WIPO (PCT)
Prior art keywords
plate material
molding
die
mold
trim
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Application number
PCT/JP2015/062399
Other languages
French (fr)
Japanese (ja)
Inventor
横山　潤
奥中　啓之
真大 杉山
豪 箕浦
Original Assignee
本田技研工業株式会社
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Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Publication of WO2015163418A1 publication Critical patent/WO2015163418A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating

Definitions

  • the present invention relates to a plate material processing apparatus and a plate material processing method.
  • draw molding has been performed in which an end portion of a plate material such as a metal panel is held by a blank holder, and in this state, the plate material is squeezed by a molding die.
  • gripped with the blank holder is a scrap part unnecessary as a product, the trim shaping
  • a plate material processing apparatus includes a molding die that can draw-mold a plate material and subsequently perform trim molding (see, for example, Patent Document 1). According to this plate material processing apparatus, it is possible to share a molding die in draw molding and trim molding, simplify the apparatus configuration and simplify the process.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a plate material processing apparatus and a plate material processing method capable of performing trim molding following draw molding and cutting while pulling the end of the plate material during trim molding. There is to do.
  • the present invention is a plate material processing apparatus for processing a plate material (for example, a plate material W described later), and a molding surface (for example, a molding surface 120, 220, 120A, 220A described later) for molding the plate material. ) (For example, lower molding molds 12 and 12A, molding upper molds 22 and 22A described later), and holding the end portions of the plate material and capable of moving up and down relatively with respect to the molding mold.
  • Molds for example, lower mold blank holders 13 and 13A, upper mold blank holders 23 and 23A described later
  • a cutting blade provided on the outer side of the molding surface of the molding mold and cutting an end of the plate
  • a cutting blade 123, 124, 230 ⁇ / b> A which will be described later, is provided, and the end of the plate member is pulled when the holding die moves up and down relatively with respect to the forming die.
  • Being said plate Is pressed against the molding surface to mold the plate material, and the cutting blade is lifted up and down relative to the molding die so that the end of the plate material is pulled.
  • a plate material processing device for example, plate material processing device 1, 1A described later
  • cuts an end portion of the plate material by contact for example, plate material processing device 1, 1A described later
  • the holding mold as a blank holder that holds the end of the plate material is moved up and down relatively with respect to the molding mold.
  • plate material is shape
  • plate material is cut
  • trim molding can be executed following draw molding, and cutting can be performed while pulling the end of the plate material during trim molding.
  • draw molding and trim molding can be performed continuously, a holding mold as a blank holder that is normally used in draw molding can be effectively used in trim molding, and the apparatus configuration can be simplified and the process can be simplified. As a result, the cost of the mold can be reduced. Further, it becomes possible to partially cut the plate material during the draw molding of the plate material, and the formable shape increases.
  • the cutting blade When the holding die is moved up and down in the same direction as in the molding by the molding die, the cutting blade is brought into contact with the end of the plate material being pulled in the same direction as in the molding by the molding die. It is preferable to cut an end portion of the plate material.
  • the end of the plate material is brought into contact with the cutting blade while pulling the end of the plate in the same direction as the direction of pulling the end of the plate at the time of the draw forming, thereby performing the trim forming by cutting the end of the plate.
  • draw forming and trim forming can be performed continuously while pulling the end of the plate material in the same direction, the apparatus configuration can be simplified and the process can be simplified.
  • the molding dies are configured as a pair, and the cutting blade is provided only in one of the pair of molding dies (for example, a molding lower mold 12 described later).
  • a cutting blade is provided only in one of the pair of molding dies. According to the present invention, by providing the cutting blade only in one of the pair of molding dies, shearing from one side rather than both sides of the plate can be performed while pulling the plate. Therefore, the above-described effects can be obtained more reliably, and the cutting can always be performed at the same position, and a larger allowable range of trim forming conditions such as a cutting angle and a clearance can be secured.
  • this invention is a board
  • the said draw process is a holding die. While pulling while holding the end portion of the plate material, the plate material is pressed against the molding surface of the molding die and drawn, and the trim step holds the end portion of the plate material by the holding die.
  • a plate material processing method is provided, wherein the plate material is cut by bringing an end portion of the plate material into contact with the cutting blade while pulling.
  • draw step and the trim step are pulled in the same direction with the end portion of the plate material held by the holding mold.
  • the trim step it is preferable to cut the end portion of the plate material with a cutting blade provided only in one of the pair of molding dies.
  • a plate material processing apparatus and a plate material processing method capable of performing trim molding following draw molding and cutting while pulling the end of the plate material during trim molding.
  • FIG. 1 is a longitudinal sectional view showing a configuration of a plate material processing apparatus 1 according to the first embodiment of the present invention. More specifically, FIG. 1 is a longitudinal sectional view showing an initial state of the plate material processing apparatus 1 according to the present embodiment before forming.
  • the plate material processing apparatus 1 according to the present embodiment is a processing device that can continuously perform draw molding and trim molding on the plate material W.
  • the plate material processing apparatus 1 includes a lower mold mechanism 10 and an upper mold mechanism 20.
  • the lower mold mechanism 10 and the upper mold mechanism 20 are arranged to face each other with the plate material W interposed therebetween.
  • the plate material W for example, a side panel of an automobile is used.
  • the plate material W is adsorbed by a vacuum cup 90 provided in the transfer device 9 and transferred to the plate material processing apparatus 1.
  • the lower mold mechanism 10 is disposed below the plate material W as a workpiece and supports the plate material W from below.
  • type mechanism 20 is arrange
  • the lower mold mechanism 10 includes a lower mold base 11, a molded lower mold 12, and a lower mold blank holder 13.
  • the lower mold base 11 is fixed on the floor surface.
  • the lower mold base 11 supports a molded lower mold 12 and a lower mold blank holder 13 which will be described later.
  • the lower mold 12 has a molding surface 120 on its upper surface.
  • the molding surface 120 has a shape corresponding to the molding surface 220 of the molding upper mold 22 described later.
  • the end of the plate material W is pulled and the plate material W is pressed against the molding surface 120 while the plate material W is sandwiched between the molding surface 120 and the molding surface 220 of the molding upper mold 22.
  • the plate material W is formed.
  • 1st through-hole 121 and 2nd through-hole 122 which can insert the 1st punch 25 and the 2nd punch 26 with which upper mold mechanism 20 mentioned below is inserted are formed in lower mold 12.
  • these through holes are through holes having a circular cross section, and the first through hole 121 has a larger diameter than the second through hole 122.
  • the inside of the molded lower mold 12 is hollow.
  • a scrap receiving device 8 is disposed in the hollow.
  • the scrap receiving device 8 accommodates a scrap member generated by punching with the first punch 25 and the second punch 26 described above by a box-shaped scrap receiver whose upper surface is opened.
  • Cutting blades 123 and 124 are provided outside the molding surface 120 of the molding lower mold 12. That is, the cutting blades 123 and 124 are provided on the upper surface of the outer peripheral end portion of the molded lower mold 12. The cutting blades 123 and 124 are in contact with the end portion of the plate material W, thereby cutting the end portion of the plate material W to perform trim molding. Details of the cutting blades 123 and 124 and trim molding by the cutting blades 123 and 124 will be described in detail later.
  • the lower mold blank holder 13 is provided around the molded lower mold 12. That is, the lower mold blank holder 13 is provided so as to surround the molded lower mold 12.
  • the lower mold blank holder 13 holds the plate material W together with an upper mold blank holder 23 described later.
  • the lower mold blank holder 13 is supported by the molded lower mold 12 supported by the lower mold base 11 through a cushion 131 constituted by a gas cylinder or the like. Thereby, the lower mold blank holder 13 can be moved up and down relatively with respect to the molded lower mold 12 by the expansion and contraction of the cushion 131.
  • the upper surface of the lower blank holder 13 is horizontal. As shown in FIG. 1, the lower die blank holder 13 has an upper surface positioned at the same height as the cutting blade 124 at the highest position of the molding surface 120 of the molding lower die 12 in the initial state before molding. Placed in.
  • a recess 132 is formed on the upper surface of the lower mold blank holder 13.
  • a convex portion 232 formed on the lower surface of the upper blank holder 23 described later is fitted into the concave portion 132 via a plate material W.
  • plate material W is hold
  • the upper mold mechanism 20 includes an upper mold base 21, a molded upper mold 22, an upper mold blank holder 23, an upper mold 24, a first punch 25, and a second punch 26.
  • the upper mold base 21 is provided with a lifting mechanism 210 that moves the upper mold mechanism 20 up and down with respect to the lower mold mechanism 10 by moving the upper mold mechanism 20 up and down.
  • the elevating mechanism 210 includes a hydraulic cylinder coupled to a pin (not shown), a servo device that drives the hydraulic cylinder, and a control device that controls the servo device.
  • the molding upper mold 22 is arranged to face the molding lower mold 12 with the plate material W interposed therebetween.
  • the molding upper die 22 has a molding surface 220 on its lower surface, and the molding surface 220 has a shape corresponding to the molding surface 120 of the molding lower die 12.
  • the molding upper die 22 is a pad that contacts the upper surface of the plate material W when the plate material W is molded, and presses the plate material W downward to suppress it.
  • the molding upper die 22 is supported by an upper die 24 described later via a cushion 221 composed of a gas cylinder or the like. Therefore, the molding upper die 22 can be moved up and down relatively with respect to the upper die base 21, the upper die blank holder 23, the upper die 24, the first punch 25 and the second punch 26.
  • the upper mold blank holder 23 is provided around the molding upper mold 22. That is, the upper mold blank holder 23 is provided so as to surround the molding upper mold 22. The upper mold blank holder 23 holds the plate material W together with the lower mold blank holder 13.
  • the upper die blank holder 23 is provided at the lower end portion of the upper die 24 supported by the upper die base 21.
  • the lower surface of the upper mold blank holder 23 is horizontal.
  • the upper die blank holder 23 is arranged so that the lower surface thereof is positioned below the molding surface 220 of the molding upper die 22 in the initial state before molding.
  • a convex portion 232 is formed on the lower surface of the upper die blank holder 23.
  • the convex portion 232 is fitted into the concave portion 132 formed on the upper surface of the lower mold blank holder 13 via the plate material W.
  • plate material W is hold
  • the first punch 25 and the second punch 26 are both supported by the upper die 24.
  • Each of the first punch 25 and the second punch 26 includes base portions 251 and 261 supported by the upper die 24, and tip portions 252 and 262 that extend downward from the base portions 251 and 261 and have small diameter tips.
  • the first punch 25 and the second punch 26 are punches having a circular cross section, and the first punch 25 has a larger diameter than the second punch 26.
  • the first punch 25 and the second punch 26 can project and retract from the molding upper die 22 as the molding upper die 22 moves up and down relative to the punches by the action of the cushion 221. That is, when the molding upper die 22 is raised relative to these punches, the tip of the punch protrudes from the molding upper die 22, and when the molding upper die 22 is lowered relative to these punches, the tip of the punch Is buried in the molding upper die 22. Accordingly, in these punches, when the molding upper die 22 comes into contact with the molding lower die 12 through the plate material W and the molding upper die 22 rises relative to these punches, the tip portions 252 and 262 of each punch are molded. Projects from the upper mold 22. And the front-end
  • FIGS. 2 to 6 are longitudinal sectional views for explaining the operation of the plate material processing apparatus 1.
  • FIG. 1 shows the initial state as described above
  • FIG. 2 shows the state when the end portion of the plate material W is held by the blank holder
  • FIG. 3 shows the state when the plate material W is drawn.
  • Indicates the state. 4 shows a state when trimming the end portion of the plate W
  • FIG. 5 shows a state when the mold is opened
  • FIG. 6 shows a state when taking out the molded product and the scrap product.
  • . 7 to 11 are partial enlarged cross-sectional views for explaining trim forming (cutting angle 0 degree) of the plate material processing apparatus 1.
  • FIG. 12 to 16 are partial enlarged cross-sectional views for explaining trim forming (cutting angle 80 degrees) of the plate material processing apparatus 1.
  • FIG. 1 shows the initial state as described above
  • FIG. 2 shows the state when the end portion of the plate material W is held by the blank holder
  • FIG. 3 shows the state when the plate material W is drawn.
  • the plate material W is conveyed to the plate material processing apparatus 1 by the conveyance device 9 in a state where the lifting mechanism 210 is driven and the upper mold mechanism 20 is raised to the top dead center.
  • the conveying device 9 is set by placing the conveyed plate material W on the upper surface of the lower blank holder 13, and then retracts from the plate material processing apparatus 1.
  • the elevating mechanism 210 is driven to further lower the upper mold mechanism 20 until the position of the lower mold blank holder 13 reaches the bottom dead center.
  • the upper molding die 22 abuts against the lower molding die 12 via the plate material W, so that the cushion 221 is compressed and the molding upper die 22 is moved together with the lower molding die 12 to the first punch 25 and the second punch 26. Relatively rises.
  • the front end portions 252 and 262 of the first punch 25 and the second punch 26 protrude from the molding surface 220 of the upper mold 22, so that the plate material W is punched.
  • the scrap S1 generated by the punching process is accommodated in the scrap receiving device 8.
  • the molding upper die 22 also rises relative to the upper die blank holder 23 and the upper die 24. Then, the edge part of the board
  • FIGS. 7 to 11 are partially enlarged cross-sectional views for explaining trim forming (small cutting angle) of the plate material processing apparatus 1.
  • 7 to 11 are partially enlarged cross-sectional views at a position where the cutting angle is small, such as 0 degrees.
  • the cutting angle means the size of the angle formed between the upper surfaces of the cutting blades 123 and 124 and the plate material W.
  • FIG. 7 is a diagram showing an initial state before molding.
  • a cutting blade 124 is provided on the outer side of the molding surface 120 of the lower molding die 12 so as to protrude upward.
  • the angle of the cutting blade 124 (the angle between the upper surface and the side surface) is set to 90 degrees, for example. However, the present invention is not limited to this, and an acute angle of 90 degrees or less may be used.
  • a lower mold recess 125 surrounded by the cutting blade 124 and the lower mold protrusion 126 is formed outside the cutting blade 124.
  • no cutting blade is provided inside the upper die blank holder 23, and an upper die convex portion 233 formed so as to protrude downward and have a tip edge formed into an R-shaped curved surface is provided. ing.
  • the upper mold convex part 233 is disposed slightly outside the cutting blade 124 provided on the molding lower mold 12, and enters the lower mold concave part 125 of the molding lower mold 12 during trim molding. As shown in FIG. 7, in the initial state, the plate material W is placed in contact with the lower die blank holder 13 and the cutting blade 124.
  • FIG. 8 is a diagram showing a state when the end portion of the plate material W is held by the blank holder.
  • the end of the plate material W is held and held by the upper die blank holder 23 and the lower die blank holder 13 and pulled downward, so that the cutting blade 124 serves as a fulcrum of the plate material W.
  • the edge gradually begins to bend downward. That is, when the plate material W is pressed against the molding lower mold 12, the draw molding is started.
  • FIG. 9 is a diagram showing a state in which the end portion of the plate material W held and held by the blank holder is further drawn downward to draw. As shown in FIG. 9, when the end portion of the plate material W is further pulled downward, the plate material W comes into contact with the lower mold convex portion 126 of the molded lower mold 12, and the draw molding proceeds.
  • FIG. 10 is a diagram showing a state when the draw molding is executed.
  • the end portion of the plate material W is further pulled downward in a state where the molding upper die 22 presses the plate material W downward and sandwiches the plate material W with the molding lower die 12.
  • the plate material W is pressed against the upper surface (the molding surface 120, etc.) of the molding lower mold 12, and the draw molding is executed.
  • the upper mold convex portion 233 of the upper mold blank holder 23 comes into contact with the plate material W, so that the molding upper mold 22 is slightly lowered relative to the upper mold blank holder 23.
  • FIG. 11 is a diagram showing a state when trim molding is executed.
  • the cushion 221 is compressed and the molding upper mold 22 together with the molding lower mold 12 and the upper mold blank holder 23 and It rises relative to the lower mold blank holder 13. That is, as shown in FIG. 11, the upper mold blank holder 23 and the lower mold blank holder 13 are lowered relative to the molding upper mold 22 and the molding lower mold 12 that are in contact with each other via the plate material W. . Then, the end of the plate member W is pulled downward and is pressed downward by the upper convex portion 233 of the upper blank holder 23.
  • the plate material W is not cut by the upper mold convex portion 233. Thereby, the edge part of the board
  • FIG. 12 is a diagram showing an initial state before molding.
  • a cutting blade 123 is provided on the outer side of the molding surface 120 of the molding lower mold 12 so as to project outward and in a stepped shape.
  • the angle (angle between the upper surface and the side surface) of the cutting blade 123 is set to 90 degrees, for example.
  • the present invention is not limited to this, and an acute angle of 90 degrees or less may be used.
  • the angle between the side surface and the lower surface of the upper mold convex portion 233 is set to an obtuse angle.
  • the angle between the side surface and the lower surface of the upper mold convex portion 233 is set to 170 degrees.
  • the upper mold convex portion 233 is disposed slightly outside the cutting blade 123 provided on the molded lower mold 12.
  • FIG. 13 is a diagram showing a state when the end portion of the plate material W is held by the blank holder
  • FIG. 14 is a drawing in which the end portion of the plate material W held and held by the blank holder is further pulled downward. It is a figure which shows a state when shape
  • the states shown in FIGS. 13 and 14 are as described in FIGS.
  • FIG. 15 is a diagram showing a state when the draw molding is executed.
  • the end portion of the plate material W is further pulled downward in a state where the molding upper die 22 presses the plate material W downward and sandwiches the plate material W with the molding lower die 12.
  • the plate material W is pressed against the upper surface (the molding surface 120, etc.) of the molding lower mold 12, and the draw molding is executed.
  • FIG. 16 is a diagram showing a state when trim molding is executed.
  • the cushion 221 is compressed and the molding upper mold 22 together with the molding lower mold 12 and the upper mold blank holder 23 and It rises relative to the lower mold blank holder 13. That is, as shown in FIG. 16, the upper mold blank holder 23 and the lower mold blank holder 13 are lowered relative to the molding upper mold 22 and the molding lower mold 12 that are in contact with each other via the plate material W. . Then, the end of the plate member W is further pulled downward, and is pressed downward by the upper mold convex portion 233 of the upper mold blank holder 23.
  • the angle between the side surface and the lower surface of the upper mold convex portion 233 is an obtuse angle
  • the plate material W is not cut by the upper mold convex portion 233.
  • plate material W is cut
  • the lifting mechanism 210 is driven to raise the upper mold mechanism 20 and open the mold. At this time, the scrap S ⁇ b> 2 generated by being cut by trim molding remains placed on the lower mold blank holder 13.
  • the molded product M placed on the lower molding die 12 is adsorbed and carried out by a vacuum cup 70 provided in the carry-out device 7.
  • the scrap S2 placed on the lower mold blank holder 13 is attracted and carried out by the magnet 71 provided in the carry-out device 7.
  • the plate material W is draw-molded, it is subsequently trim-molded.
  • the clearance means the horizontal distance between the two blades when cutting from both sides of the plate material W with the upper blade and the lower blade in the conventional case, and in this embodiment, the cutting blades 123 and 124 and the upper die. It means the distance in the horizontal direction from the convex portion 233.
  • FIG. 17 is a view showing the clearance C when the cutting angle ⁇ is 0 degree in the plate material processing apparatus 1 according to the present embodiment. As shown in FIG. 17, when the cutting angle ⁇ is 0 degree, the lower surface of the plate W is in surface contact with the upper surface of the cutting blade 124.
  • FIG. 18 is a diagram illustrating the clearance C when the cutting angle ⁇ is 80 degrees in the plate material processing apparatus 1 according to the embodiment. As shown in FIG. 18, when the cutting angle ⁇ is 80 degrees, the size of the angle formed by the upper surface of the cutting blade 123 and the plate material W is 80 degrees. In this case, the size of the angle formed by the side surface and the lower surface of the upper mold convex portion 233 is set to 170 degrees, for example.
  • FIG. 19 is a diagram showing the relationship between the cutting angle and the clearance in the conventional plate processing apparatus 1 according to the present embodiment.
  • FIG. 19 shows the relationship between the clearance and the molding failure at each of the cutting angles of 0 degree and 80 degrees.
  • the cutting angle is 0 degree or 80 degrees
  • the trim forming of the plate material processing apparatus 1 according to the present embodiment even if the clearance is large, the forming defect is smaller than the conventional case. It turns out that it can reduce significantly. That is, according to the trim forming of the plate material processing apparatus 1 according to the present embodiment, it can be seen that the clearance can be set large and the adjustment of the clearance is easy.
  • FIG. 20 is a diagram showing a cut portion of a plate material cut by trim forming (cutting angle 0 degree) by a conventional plate material processing apparatus.
  • 20A shows the case where the clearance is small
  • FIG. 20B shows the case where the clearance is large.
  • FIG. 20 in the trim molding by the conventional plate material processing apparatus, it can be seen that when the clearance is increased, the cut portion of the molded product M is greatly deformed to the scrap S2 side, resulting in molding failure.
  • FIG. 21 is a diagram showing a cut portion of a plate material cut by trim forming (cutting angle 0 degree) by the plate material processing apparatus 1 according to the present embodiment.
  • 21A shows a case where the clearance is small
  • FIG. 21B shows a case where the clearance is large.
  • the trim forming by the plate material processing apparatus 1 according to the present embodiment even if the clearance is increased, the shape of the cut portion of the molded product M is not greatly deformed, and a good molded product M is obtained. You can see that
  • FIG. 22 is a cross-sectional view of the vicinity of the cut surface of the plate material W cut by trim forming (cutting angle 0 degree) by the conventional plate material processing apparatus 1.
  • FIG. 23 is a cross-sectional view of the vicinity of the cut surface of the plate material W cut by trim forming (cutting angle 0 degree) by the plate material processing apparatus 1 according to the present embodiment.
  • the trim forming by the conventional plate material processing apparatus since the plate material W is cut from both sides, the “sagging” portion, the sheared portion, and the breakage are generated near the cut surface of the cut plate material W. The confirmed part is confirmed.
  • the plate material processing apparatus 1 since the plate material W is cut only from one side while being pulled, a portion where a large “sag” occurs in the vicinity of the cut surface of the cut plate material W. Only the broken part is confirmed, and the sheared part is not confirmed. Accordingly, in the cross section near the cut surface of the plate material W, a portion where a large “sag” has occurred is confirmed, and when a sheared portion is not confirmed, the plate material processing apparatus 1 according to the present embodiment performs molding. It can be judged that it was broken.
  • the following effects are produced.
  • the lower mold blank holder 13 and the upper mold blank holder 23 that hold the end portion of the plate material W are moved up and down relative to the molding lower mold 12 and the molding upper mold 22.
  • the plate material W was shape
  • plate material W was cut
  • trim molding can be executed following draw molding, and cutting can be performed while pulling the end of the plate material W during trim molding.
  • the cutting can be performed while applying tension to the end portion of the plate material W at the time of trim forming, it is possible to ensure a large allowable range of trim forming conditions such as a cutting angle and a clearance. Therefore, even when the cutting angle is large, trim molding is possible, and when the cutting angle is large, the cutting in the oblique direction by the cam mechanism that has been conventionally used becomes unnecessary, and the cost can be reduced. Moreover, since it can cut
  • draw molding and trim molding can be performed continuously, the lower mold blank holder 13 and the upper mold blank holder 23 normally used in draw molding can be effectively used in trim molding, and the apparatus configuration can be simplified and the process can be simplified. . As a result, the cost of the mold can be reduced. Further, it becomes possible to partially cut the plate material W during the draw molding of the plate material W, and the formable shape increases.
  • plate material W is cut
  • the cutting blades 123 and 124 are provided only on one molding lower mold 12 of the pair of molding dies. According to this embodiment, by providing the cutting blades 123 and 124 only on one molding lower mold 12 of the pair of molding dies, shearing is performed from one side instead of both sides of the sheet material W while pulling the sheet material W. it can. Therefore, the above-described effects can be obtained more reliably, and the cutting can always be performed at the same position, and a larger allowable range of trim forming conditions such as a cutting angle and a clearance can be secured.
  • the same effect as the above-mentioned effect is show
  • FIG. 24 is a partially enlarged cross-sectional view showing an initial state of a plate material processing apparatus 1A according to the second embodiment of the present invention.
  • the plate material processing apparatus 1A according to the present embodiment is different from the plate material processing device 1 according to the first embodiment described above in the position where the cutting blade is provided.
  • the cutting blades 123 and 124 are provided on the forming lower mold 12 arranged in the direction (downward) in which the end of the plate material W is pulled.
  • the cutting blade 230A is provided on the upper blank holder 23A arranged in the direction (upward) opposite to the direction (downward) in which the end of the plate material W is pulled.
  • the plate material processing apparatus 1A is different from the plate material processing apparatus 1 in that bend forming is continuously performed after trim forming. Therefore, as shown in FIG. 24, a concave portion 121A and a convex portion 122A are formed in order from the inside on the outer peripheral side portion of the molded lower mold 12A. Further, a convex portion 231A and a concave portion 232A are formed in order from the inside on the inner peripheral side portion of the upper mold blank holder 23A. The concave and convex portions of the molded lower mold 12A and the upper mold blank holder 23A are fitted to each other, whereby the end of the molded product is bent. In addition, about the structure of 1 A of board
  • FIG. 24 to FIG. 28 are partially enlarged sectional views for explaining trim forming and bend forming of the plate material processing apparatus 1A.
  • FIG. 24 is a diagram illustrating an initial state
  • FIG. 25 is a diagram illustrating a state when an end portion of a plate material is held by a blank holder.
  • 26 is a view showing a state when the plate material is being drawn
  • FIG. 27 is a view showing a state when the end portion of the plate material is trim-formed
  • FIG. 28 is a view showing a state where the plate material is bend-formed. It is a figure which shows a state when there is.
  • the plate material W put into the plate material processing apparatus 1A is supported and placed by the lower die blank holder 13A.
  • the molding upper die 22A and the upper die blank holder 23A are lowered simultaneously.
  • the step-like lower end portion of the outer peripheral side portion of the upper die blank holder 23A is brought into contact with and fitted into the step-like upper end portion of the lower die blank holder 13A via the plate material W.
  • plate material W is hold
  • the molding upper die 22A and the upper die blank holder 23A are further lowered. Then, the molding upper die 22A comes into contact with the molding lower die 12A via the plate material W. Thus, the plate material W is sandwiched between the molding surface 220A of the molding upper mold 22A and the molding surface 120A of the molding lower mold 12A, and draw molding is performed. At this time, the plate material W is draw-molded in a state in which the end portion is gripped and pulled by the blank holder.
  • the upper die blank holder 23A is further lowered together with the lower die blank holder 13A. This is possible because the cushion material (not shown) provided in the lower mold blank holder 13A is contracted. Thereby, the upper and lower blank holders are lowered relative to the upper molding die 22A and the lower molding die 12A. Then, the convex part 231A of the upper mold blank holder 23A starts to be inserted into the concave part 121A of the molded lower mold 12A. At this time, the plate material W is cut by the cutting blade 230A provided at the tip edge of the convex portion 231A of the upper blank holder 23A, and trim molding is performed.
  • the upper die blank holder 23A is further lowered together with the lower die blank holder 13A. Then, the convex portion 231A of the upper die blank holder 23A is inserted deeply into the concave portion 121A of the molded lower die 12A while bending the end portion of the cut plate material W. Thereby, bend molding is performed.
  • the same effects as those of the first embodiment are exhibited.
  • bend molding can be performed continuously, and more efficient molding is possible.

Abstract

The present invention addresses the issue of providing a plate material machining device and a plate material machining method, whereby draw molding can be followed by trim molding and an end section of a plate material can be cut while being pulled, during trim molding. The plate material machining device (1) comprises: a lower molding die (12); an upper molding die (22); a lower blank holder (13) and an upper blank holder (23) that hold an end section of the plate material (W) and can be raised/lowered relative to the lower molding die (12) and the upper molding die (22); and cutting blades (123, 124) provided further on the outside than a molding surface (120) of the lower molding die (12) and that cut the end section of the plate material (W). The lower molding die (12) and the upper molding die (22) mold the plate material (W), as a result of the end section of the plate material (W) being pulled and the plate material (W) being pushed against the molding surface (120), by the relative raising and lowering of the blank holders. The cutting blades (123, 124) cut the end section of the plate material (W), by the end section of the plate material (W) being pulled and by abutting same, as a result of the relative raising and lowering of the blank holders.

Description

板材加工装置及び板材加工方法Plate material processing apparatus and plate material processing method
　本発明は、板材加工装置及び板材加工方法に関する。 The present invention relates to a plate material processing apparatus and a plate material processing method.
　従来、金属パネル等の板材の端部をブランクホルダで把持し、この状態で、成形金型により板材を絞り込みながら成形するドロー成形が行われている。また、ブランクホルダで把持したワークの端部は、製品としては不要のスクラップ部分であるため、絞り成形後にその端部を切除するトリム成形が行われている。 Conventionally, draw molding has been performed in which an end portion of a plate material such as a metal panel is held by a blank holder, and in this state, the plate material is squeezed by a molding die. Moreover, since the edge part of the workpiece | work hold | gripped with the blank holder is a scrap part unnecessary as a product, the trim shaping | molding which cuts off the edge part after drawing is performed.
　ところで、通常、ドロー成形とトリム成形は、それぞれ別の成形金型により行われる。そのため、ドロー成形後、トリム成形を行うためには、板材を別の成形金型まで搬送する必要があった。 By the way, normally, draw molding and trim molding are performed by separate molding dies. Therefore, in order to perform trim molding after draw molding, it is necessary to transport the plate material to another molding die.
　そこで、板材をドロー成形し、続けてトリム成形を実行できる成形金型を備えた板材加工装置が提案されている（例えば、特許文献１参照）。この板材加工装置によれば、ドロー成形とトリム成形とで成形金型を共通化でき、装置構成を簡略化できるとともに工程を簡略化できる。 Therefore, a plate material processing apparatus has been proposed that includes a molding die that can draw-mold a plate material and subsequently perform trim molding (see, for example, Patent Document 1). According to this plate material processing apparatus, it is possible to share a molding die in draw molding and trim molding, simplify the apparatus configuration and simplify the process.
特開２００４－３１４１４７号公報JP 2004-314147 A
　しかしながら、特許文献１の板材加工装置では、ドロー成形が完了したときに、成形上型に設けられた上刃と成形下型に設けられた下刃が露出することで、板材を両側から切断する。即ち、トリム成形開始直後に板材の両側からせん断が行われるため、板材の端部をブランクホルダ（押え部材）で把持して引っ張りながら切断することができなかった。そのため、両刃の切断角度やクリアランス管理が重要となり、その調整に時間を要していた。また、両側からのせん断位置がずれ易く、バリや切粉の発生の原因となっていた。 However, in the plate material processing apparatus of Patent Document 1, when draw molding is completed, the upper blade provided on the upper mold and the lower blade provided on the lower mold are exposed to cut the plate from both sides. . That is, since shearing is performed from both sides of the plate material immediately after the start of trim forming, the end portion of the plate material cannot be cut while being gripped and pulled by the blank holder (pressing member). For this reason, it is important to manage the cutting angle and clearance between the two blades, and it takes time to adjust them. In addition, the shear position from both sides is easily shifted, which causes generation of burrs and chips.
　本発明は上記に鑑みてなされたものであり、その目的は、ドロー成形に続けてトリム成形を実行できるとともに、トリム成形時に板材の端部を引っ張りながら切断できる板材加工装置及び板材加工方法を提供することにある。 The present invention has been made in view of the above, and an object of the present invention is to provide a plate material processing apparatus and a plate material processing method capable of performing trim molding following draw molding and cutting while pulling the end of the plate material during trim molding. There is to do.
　上記目的を達成するため本発明は、板材（例えば、後述の板材Ｗ）を加工する板材加工装置であって、前記板材を成形する成形面（例えば、後述の成形面１２０，２２０，１２０Ａ，２２０Ａ）を有する成形金型（例えば、後述の成形下型１２，１２Ａ、成形上型２２，２２Ａ）と、前記板材の端部を保持するとともに前記成形金型に対して相対的に昇降可能な保持金型（例えば、後述の下型ブランクホルダ１３，１３Ａ、上型ブランクホルダ２３，２３Ａ）と、前記成形金型の前記成形面より外側に設けられ、前記板材の端部を切断する切断刃（例えば、後述の切断刃１２３，１２４，２３０Ａ）と、を備え、前記成形金型は、前記保持金型が前記成形金型に対して相対的に昇降することによって、前記板材の端部が引っ張られて前記板材が前記成形面に押し当てられることで前記板材を成形し、前記切断刃は、前記保持金型が前記成形金型に対して相対的に昇降することによって、前記板材の端部が引っ張られて当接することにより前記板材の端部を切断することを特徴とする板材加工装置（例えば、後述の板材加工装置１，１Ａ）を提供する。 In order to achieve the above object, the present invention is a plate material processing apparatus for processing a plate material (for example, a plate material W described later), and a molding surface (for example, a molding surface 120, 220, 120A, 220A described later) for molding the plate material. ) (For example, lower molding molds 12 and 12A, molding upper molds 22 and 22A described later), and holding the end portions of the plate material and capable of moving up and down relatively with respect to the molding mold. Molds (for example, lower mold blank holders 13 and 13A, upper mold blank holders 23 and 23A described later), and a cutting blade provided on the outer side of the molding surface of the molding mold and cutting an end of the plate ( For example, a cutting blade 123, 124, 230 </ b> A), which will be described later, is provided, and the end of the plate member is pulled when the holding die moves up and down relatively with respect to the forming die. Being said plate Is pressed against the molding surface to mold the plate material, and the cutting blade is lifted up and down relative to the molding die so that the end of the plate material is pulled. Provided is a plate material processing device (for example, plate material processing device 1, 1A described later) that cuts an end portion of the plate material by contact.
　本発明では、板材の端部を保持するブランクホルダとしての保持金型を、成形金型に対して相対的に昇降させる。これにより、板材の端部を引っ張ることで板材を成形面に押し当てることにより、板材を成形する。また、板材の端部を引っ張ることで切断刃に当接させることにより、板材の端部を切断する。
　本発明の板材加工装置によれば、ドロー成形に続けてトリム成形を実行できるとともに、トリム成形時に板材の端部を引っ張りながら切断できる。即ち、トリム成形時に板材の端部に張力を付加しながら切断ができるため、切断角度及びクリアランスといったトリム成形条件の許容幅を大きく確保できる。従って、切断角度が大きい場合であってもトリム成形が可能となり、切断角度が大きい場合に従来用いられていたカム機構による斜め方向の切断が不要となり、コストを削減できる。
　また、板材の端部を引っ張りながら切断できるため、板材の両側に刃を設ける必要がなくなり、従来のようにせん断位置がずれることもなく、バリや切粉の発生を回避できる。
　また、ドロー成形とトリム成形を続けて実行できるため、ドロー成形で通常用いるブランクホルダとしての保持金型を、トリム成形でも有効利用でき、装置構成を簡略できるとともに工程を簡略化できる。ひいては、成形金型の費用を削減できる。
　また、板材のドロー成形中に板材の一部切断が可能となり、成形可能な形状が増加する。 In the present invention, the holding mold as a blank holder that holds the end of the plate material is moved up and down relatively with respect to the molding mold. Thereby, a board | plate material is shape | molded by pressing the board | plate material against a shaping | molding surface by pulling the edge part of a board | plate material. Moreover, the edge part of a board | plate material is cut | disconnected by making it contact | abut to a cutting blade by pulling the edge part of a board | plate material.
According to the plate material processing apparatus of the present invention, trim molding can be executed following draw molding, and cutting can be performed while pulling the end of the plate material during trim molding. That is, since cutting can be performed while applying tension to the end portion of the plate material during trim forming, a large allowable width of trim forming conditions such as a cutting angle and a clearance can be secured. Therefore, even when the cutting angle is large, trim molding is possible, and when the cutting angle is large, the cutting in the oblique direction by the cam mechanism that has been conventionally used becomes unnecessary, and the cost can be reduced.
Moreover, since it can cut | disconnect while pulling the edge part of a board | plate material, it becomes unnecessary to provide a blade on both sides of a board | plate material, a shearing position does not shift | deviate conventionally, and generation | occurrence | production of a burr | flash and a chip can be avoided.
Further, since draw molding and trim molding can be performed continuously, a holding mold as a blank holder that is normally used in draw molding can be effectively used in trim molding, and the apparatus configuration can be simplified and the process can be simplified. As a result, the cost of the mold can be reduced.
Further, it becomes possible to partially cut the plate material during the draw molding of the plate material, and the formable shape increases.
　前記切断刃は、前記成形金型による成形時と同じ方向に前記保持金型が昇降することによって、前記成形金型による成形時と同じ方向に前記板材の端部が引っ張られて当接することにより、前記板材の端部を切断することが好ましい。 When the holding die is moved up and down in the same direction as in the molding by the molding die, the cutting blade is brought into contact with the end of the plate material being pulled in the same direction as in the molding by the molding die. It is preferable to cut an end portion of the plate material.
　この発明では、ドロー成形時に板材の端部を引っ張る方向と同じ方向に、板材の端部を引っ張りながら切断刃に当接させることにより、板材の端部を切断してトリム成形を実行する。
　この発明によれば、同じ方向に板材の端部を引っ張りながらドロー成形及びトリム成形を連続的に行うことができるため、装置構成を簡略できるとともに工程を簡略化できる。 According to the present invention, the end of the plate material is brought into contact with the cutting blade while pulling the end of the plate in the same direction as the direction of pulling the end of the plate at the time of the draw forming, thereby performing the trim forming by cutting the end of the plate.
According to the present invention, since draw forming and trim forming can be performed continuously while pulling the end of the plate material in the same direction, the apparatus configuration can be simplified and the process can be simplified.
　前記成形金型は、一対で構成され、前記切断刃は、前記一対の成形金型のうちの一方の成形金型（例えば、後述の成形下型１２）にのみ設けられることが好ましい。 It is preferable that the molding dies are configured as a pair, and the cutting blade is provided only in one of the pair of molding dies (for example, a molding lower mold 12 described later).
　この発明では、一対の成形金型のうちの一方の成形金型にのみ、切断刃を設ける。
　この発明によれば、一対の成形金型のうちの一方の成形金型にのみ切断刃を設けることで、板材を引っ張りながら板材の両側ではなく片側からのせん断を実行できる。そのため、上述の効果をより確実に得ることができるうえ、常に同じ位置で切断でき、切断角度及びクリアランスといったトリム成形条件の許容幅をより大きく確保できる。 In this invention, a cutting blade is provided only in one of the pair of molding dies.
According to the present invention, by providing the cutting blade only in one of the pair of molding dies, shearing from one side rather than both sides of the plate can be performed while pulling the plate. Therefore, the above-described effects can be obtained more reliably, and the cutting can always be performed at the same position, and a larger allowable range of trim forming conditions such as a cutting angle and a clearance can be secured.
　また本発明は、板材を成形金型により絞り成形するドロー工程と、前記板材の端部を切断刃により切断するトリム工程と、を有する板材加工方法であって、前記ドロー工程は、保持金型により板材の端部を保持した状態で引っ張りながら、前記板材を前記成形金型の成形面に押し当てて絞り成形し、前記トリム工程は、前記保持金型により前記板材の端部を保持した状態で引っ張りながら、前記板材の端部を前記切断刃に当接させることにより切断することを特徴とする板材加工方法を提供する。 Moreover, this invention is a board | plate material processing method which has a draw process which draw-forms a board | plate material with a shaping die, and a trim process which cut | disconnects the edge part of the said board | plate material with a cutting blade, Comprising: The said draw process is a holding die. While pulling while holding the end portion of the plate material, the plate material is pressed against the molding surface of the molding die and drawn, and the trim step holds the end portion of the plate material by the holding die. A plate material processing method is provided, wherein the plate material is cut by bringing an end portion of the plate material into contact with the cutting blade while pulling.
　前記ドロー工程と前記トリム工程は、前記保持金型により前記板材の端部を保持した状態で同じ方向に引っ張ることが好ましい。 It is preferable that the draw step and the trim step are pulled in the same direction with the end portion of the plate material held by the holding mold.
　前記トリム工程では、一対で構成された前記成形金型のうちの一方の成形金型にのみ設けられた切断刃により、前記板材の端部を切断することが好ましい。 In the trim step, it is preferable to cut the end portion of the plate material with a cutting blade provided only in one of the pair of molding dies.
　上述の各板材加工方法によれば、各板材加工方法に対応した上述の各板材加工装置と同様の効果が奏される。 According to the above-described plate material processing methods, the same effects as those of the above-described plate material processing apparatuses corresponding to the respective plate material processing methods are exhibited.
　本発明によれば、ドロー成形に続けてトリム成形を実行できるとともに、トリム成形時に板材の端部を引っ張りながら切断できる板材加工装置及び板材加工方法を提供できる。 According to the present invention, it is possible to provide a plate material processing apparatus and a plate material processing method capable of performing trim molding following draw molding and cutting while pulling the end of the plate material during trim molding.
本発明の第１実施形態に係る板材加工装置の構成を示す縦断面図である。It is a longitudinal section showing the composition of the board processing device concerning a 1st embodiment of the present invention. 上記実施形態に係る板材加工装置の動作を説明するための縦断面図であり、板材の端部をブランクホルダにより保持したときの状態を示す図である。It is a longitudinal cross-sectional view for demonstrating operation | movement of the board | plate material processing apparatus which concerns on the said embodiment, and is a figure which shows a state when the edge part of a board | plate material is hold | maintained with the blank holder. 上記実施形態に係る板材加工装置の動作を説明するための縦断面図であり、板材をドロー成形しているときの状態を示す図である。It is a longitudinal cross-sectional view for demonstrating operation | movement of the board | plate material processing apparatus which concerns on the said embodiment, and is a figure which shows a state when drawing the board | plate material. 上記実施形態に係る板材加工装置の動作を説明するための縦断面図であり、板材の端部をトリム成形したときの状態を示す図である。It is a longitudinal cross-sectional view for demonstrating operation | movement of the board | plate material processing apparatus which concerns on the said embodiment, and is a figure which shows a state when the edge part of a board | plate material is trim-molded. 上記実施形態に係る板材加工装置の動作を説明するための縦断面図であり、型開きしたときの状態を示す図である。It is a longitudinal cross-sectional view for demonstrating operation | movement of the board | plate material processing apparatus which concerns on the said embodiment, and is a figure which shows a state when a mold is opened. 上記実施形態に係る板材加工装置の動作を説明するための縦断面図であり、成形品及びスクラップ品を取り出すときの状態を示す図である。It is a longitudinal cross-sectional view for demonstrating operation | movement of the board | plate material processing apparatus which concerns on the said embodiment, and is a figure which shows the state when taking out a molded product and a scrap product. 上記実施形態に係る板材加工装置のトリム成形（切断角度小）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle small) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度小）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle small) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度小）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle small) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度小）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle small) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度小）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle small) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度大）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle large) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度大）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle large) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度大）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle large) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度大）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle large) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形（切断角度大）を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding (cutting angle large) of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置１において切断角度θが０度のときのクリアランスを示す図である。It is a figure which shows the clearance in case the cutting angle (theta) is 0 degree | times in the board | plate material processing apparatus 1 which concerns on the said embodiment. 上記実施形態に係る板材加工装置１において切断角度θが８０度のときのクリアランスを示す図である。It is a figure which shows the clearance in case the cutting angle (theta) is 80 degree | times in the board | plate material processing apparatus 1 which concerns on the said embodiment. 従来及び上記実施形態に係る板材加工装置における切断角度とクリアランスとの関係を示す図である。It is a figure which shows the relationship between the cutting angle and clearance in the board | plate material processing apparatus which concerns on the past and the said embodiment. 従来の板材加工装置によるトリム成形（切断角度０度）で切断された板材の切断部分を示す図である。It is a figure which shows the cut part of the board | plate material cut | disconnected by the trim shaping | molding (cutting angle 0 degree) by the conventional board | plate material processing apparatus. 上記実施形態に係る板材加工装置によるトリム成形（切断角度０度）で切断された板材の切断部分を示す図である。It is a figure which shows the cut part of the board | plate material cut | disconnected by the trim shaping | molding (cutting angle 0 degree) by the board | plate material processing apparatus which concerns on the said embodiment. 従来の板材加工装置によるトリム成形（切断角度０度）で切断された板材の切断面付近の断面図である。It is sectional drawing of the cutting surface vicinity of the board | plate material cut | disconnected by the trim shaping | molding (cutting angle 0 degree) by the conventional board | plate material processing apparatus. 上記実施形態に係る板材加工装置によるトリム成形（切断角度０度）で切断された板材の切断面付近の断面図である。It is sectional drawing of the cutting surface vicinity of the board | plate material cut | disconnected by the trim shaping | molding (cutting angle 0 degree) by the board | plate material processing apparatus which concerns on the said embodiment. 本発明の第２実施形態に係る板材加工装置のトリム成形及びベンド成形を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding and bend shaping | molding of the board | plate material processing apparatus which concerns on 2nd Embodiment of this invention. 上記実施形態に係る板材加工装置のトリム成形及びベンド成形を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding and bend shaping | molding of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形及びベンド成形を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding and bend shaping | molding of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形及びベンド成形を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding and bend shaping | molding of the board | plate material processing apparatus which concerns on the said embodiment. 上記実施形態に係る板材加工装置のトリム成形及びベンド成形を説明するための部分拡大断面図である。It is a partial expanded sectional view for demonstrating the trim shaping | molding and bend shaping | molding of the board | plate material processing apparatus which concerns on the said embodiment.
　以下、本発明の実施形態について、図面を参照しながら詳細に説明する。なお、第２実施形態の説明において、第１実施形態と共通する構成については、その説明を省略する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the description of the second embodiment, the description of the configuration common to the first embodiment is omitted.
［第１実施形態］
　図１は、本発明の第１実施形態に係る板材加工装置１の構成を示す縦断面図である。より詳しくは、図１は、本実施形態に係る板材加工装置１の成形前の初期状態を示す縦断面図である。本実施形態に係る板材加工装置１は、板材Ｗに対してドロー成形とトリム成形とを連続して実行できる加工装置である。 [First Embodiment]
FIG. 1 is a longitudinal sectional view showing a configuration of a plate material processing apparatus 1 according to the first embodiment of the present invention. More specifically, FIG. 1 is a longitudinal sectional view showing an initial state of the plate material processing apparatus 1 according to the present embodiment before forming. The plate material processing apparatus 1 according to the present embodiment is a processing device that can continuously perform draw molding and trim molding on the plate material W.
　図１に示すように、板材加工装置１は、下型機構１０と、上型機構２０と、を備える。
　これら下型機構１０と上型機構２０は、互いに板材Ｗを挟んで対向して配置される。
　板材Ｗとしては、例えば自動車のサイドパネル等が用いられる。図１に示すように、この板材Ｗは、搬送装置９が備えるバキュームカップ９０により吸着されて板材加工装置１に搬送される。 As shown in FIG. 1, the plate material processing apparatus 1 includes a lower mold mechanism 10 and an upper mold mechanism 20.
The lower mold mechanism 10 and the upper mold mechanism 20 are arranged to face each other with the plate material W interposed therebetween.
As the plate material W, for example, a side panel of an automobile is used. As shown in FIG. 1, the plate material W is adsorbed by a vacuum cup 90 provided in the transfer device 9 and transferred to the plate material processing apparatus 1.
　下型機構１０は、ワークとしての板材Ｗの下側に配置され、板材Ｗを下側から支持する。上型機構２０は、板材Ｗの上側に配置され、昇降可能に構成される。即ち、上型機構２０は、下型機構１０に対して進退可能に構成される。 The lower mold mechanism 10 is disposed below the plate material W as a workpiece and supports the plate material W from below. The upper mold | type mechanism 20 is arrange | positioned above the board | plate material W, and is comprised so that raising / lowering is possible. That is, the upper mold mechanism 20 is configured to be able to advance and retract relative to the lower mold mechanism 10.
　下型機構１０は、下型基部１１と、成形下型１２と、下型ブランクホルダ１３と、を備える。
　下型基部１１は、床面上に固定される。下型基部１１は、後述する成形下型１２及び下型ブランクホルダ１３を支持する。 The lower mold mechanism 10 includes a lower mold base 11, a molded lower mold 12, and a lower mold blank holder 13.
The lower mold base 11 is fixed on the floor surface. The lower mold base 11 supports a molded lower mold 12 and a lower mold blank holder 13 which will be described later.
　成形下型１２は、その上面に成形面１２０を有する。成形面１２０は、後述する成形上型２２の成形面２２０に対応した形状となっている。成形下型１２は、この成形面１２０と成形上型２２の成形面２２０との間で板材Ｗを挟持した状態で、板材Ｗの端部が引っ張られて板材Ｗが成形面１２０に押し当てられることで、板材Ｗを成形する。 The lower mold 12 has a molding surface 120 on its upper surface. The molding surface 120 has a shape corresponding to the molding surface 220 of the molding upper mold 22 described later. In the molding lower mold 12, the end of the plate material W is pulled and the plate material W is pressed against the molding surface 120 while the plate material W is sandwiched between the molding surface 120 and the molding surface 220 of the molding upper mold 22. Thus, the plate material W is formed.
　成形下型１２には、後述する上型機構２０が備える第１パンチ２５及び第２パンチ２６が挿入可能な第１貫通孔１２１及び第２貫通孔１２２が形成される。図１に示すように、これら貫通孔は、断面円形状の貫通孔であり、第１貫通孔１２１の方が第２貫通孔１２２よりも大径である。 1st through-hole 121 and 2nd through-hole 122 which can insert the 1st punch 25 and the 2nd punch 26 with which upper mold mechanism 20 mentioned below is inserted are formed in lower mold 12. As shown in FIG. 1, these through holes are through holes having a circular cross section, and the first through hole 121 has a larger diameter than the second through hole 122.
　成形下型１２の内部は、中空となっている。この中空には、スクラップ受け装置８が配置される。このスクラップ受け装置８は、上面が開口された箱状のスクラップ受けにより、上述の第１パンチ２５及び第２パンチ２６により打ち抜かれて生成したスクラップ部材を収容する。 The inside of the molded lower mold 12 is hollow. A scrap receiving device 8 is disposed in the hollow. The scrap receiving device 8 accommodates a scrap member generated by punching with the first punch 25 and the second punch 26 described above by a box-shaped scrap receiver whose upper surface is opened.
　成形下型１２の成形面１２０よりも外側には、切断刃１２３，１２４が設けられる。即ち、これら切断刃１２３，１２４は、成形下型１２の外周端部の上面に設けられる。これら切断刃１２３，１２４は、板材Ｗの端部に当接することで、板材Ｗの端部を切断してトリム成形する。これら切断刃１２３，１２４の詳細と、これら切断刃１２３，１２４によるトリム成形については、後段で詳述する。 Cutting blades 123 and 124 are provided outside the molding surface 120 of the molding lower mold 12. That is, the cutting blades 123 and 124 are provided on the upper surface of the outer peripheral end portion of the molded lower mold 12. The cutting blades 123 and 124 are in contact with the end portion of the plate material W, thereby cutting the end portion of the plate material W to perform trim molding. Details of the cutting blades 123 and 124 and trim molding by the cutting blades 123 and 124 will be described in detail later.
　下型ブランクホルダ１３は、成形下型１２の周囲に設けられる。即ち、下型ブランクホルダ１３は、成形下型１２を囲繞するように設けられる。下型ブランクホルダ１３は、後述する上型ブランクホルダ２３とともに、板材Ｗを挟持する。 The lower mold blank holder 13 is provided around the molded lower mold 12. That is, the lower mold blank holder 13 is provided so as to surround the molded lower mold 12. The lower mold blank holder 13 holds the plate material W together with an upper mold blank holder 23 described later.
　下型ブランクホルダ１３は、ガスシリンダ等で構成されたクッション１３１を介して、下型基部１１に支持された成形下型１２により支持される。これにより、下型ブランクホルダ１３は、クッション１３１が伸縮することで成形下型１２に対して相対的に昇降可能となっている。 The lower mold blank holder 13 is supported by the molded lower mold 12 supported by the lower mold base 11 through a cushion 131 constituted by a gas cylinder or the like. Thereby, the lower mold blank holder 13 can be moved up and down relatively with respect to the molded lower mold 12 by the expansion and contraction of the cushion 131.
　下型ブランクホルダ１３の上面は、水平となっている。図１に示すように下型ブランクホルダ１３は、成形前の初期状態においてその上面が、成形下型１２の成形面１２０のうち最も高い位置にある切断刃１２４と同一の高さに位置するように配置される。 The upper surface of the lower blank holder 13 is horizontal. As shown in FIG. 1, the lower die blank holder 13 has an upper surface positioned at the same height as the cutting blade 124 at the highest position of the molding surface 120 of the molding lower die 12 in the initial state before molding. Placed in.
　また、下型ブランクホルダ１３の上面には、凹部１３２が形成されている。この凹部１３２には、後述する上型ブランクホルダ２３の下面に形成された凸部２３２が板材Ｗを介して嵌合する。これにより、板材Ｗの端部が下型ブランクホルダ１３と上型ブランクホルダ２３とにより把持されて保持される。 Further, a recess 132 is formed on the upper surface of the lower mold blank holder 13. A convex portion 232 formed on the lower surface of the upper blank holder 23 described later is fitted into the concave portion 132 via a plate material W. Thereby, the edge part of the board | plate material W is hold | gripped by the lower mold | type blank holder 13 and the upper mold | type blank holder 23, and is hold | maintained.
　上型機構２０は、上型基部２１と、成形上型２２と、上型ブランクホルダ２３と、上型ダイ２４と、第１パンチ２５と、第２パンチ２６と、を備える。
　上型基部２１には、上型機構２０を昇降させることで、上型機構２０を下型機構１０に対して進退させる昇降機構２１０が設けられる。 The upper mold mechanism 20 includes an upper mold base 21, a molded upper mold 22, an upper mold blank holder 23, an upper mold 24, a first punch 25, and a second punch 26.
The upper mold base 21 is provided with a lifting mechanism 210 that moves the upper mold mechanism 20 up and down with respect to the lower mold mechanism 10 by moving the upper mold mechanism 20 up and down.
　昇降機構２１０は、いずれも図示しないピンに連結された油圧シリンダと、油圧シリンダを駆動するサーボ機器と、サーボ機器を制御する制御装置と、を備える。 The elevating mechanism 210 includes a hydraulic cylinder coupled to a pin (not shown), a servo device that drives the hydraulic cylinder, and a control device that controls the servo device.
　成形上型２２は、板材Ｗを介して成形下型１２に対向して配置される。成形上型２２は、その下面に成形面２２０を有し、成形面２２０は成形下型１２の成形面１２０に対応した形状となっている。成形上型２２は、板材Ｗの成形時に板材Ｗの上面に当接し、板材Ｗを下方に押圧して抑え込むパッドである。
　この成形上型２２は、ガスシリンダ等で構成されるクッション２２１を介して、後述する上型ダイ２４に支持される。そのため、成形上型２２は、上型基部２１、上型ブランクホルダ２３、上型ダイ２４、第１パンチ２５及び第２パンチ２６に対して、相対的に昇降可能となっている。 The molding upper mold 22 is arranged to face the molding lower mold 12 with the plate material W interposed therebetween. The molding upper die 22 has a molding surface 220 on its lower surface, and the molding surface 220 has a shape corresponding to the molding surface 120 of the molding lower die 12. The molding upper die 22 is a pad that contacts the upper surface of the plate material W when the plate material W is molded, and presses the plate material W downward to suppress it.
The molding upper die 22 is supported by an upper die 24 described later via a cushion 221 composed of a gas cylinder or the like. Therefore, the molding upper die 22 can be moved up and down relatively with respect to the upper die base 21, the upper die blank holder 23, the upper die 24, the first punch 25 and the second punch 26.
　上型ブランクホルダ２３は、成形上型２２の周囲に設けられる。即ち、上型ブランクホルダ２３は、成形上型２２を囲繞するように設けられる。上型ブランクホルダ２３は、下型ブランクホルダ１３とともに、板材Ｗを挟持する。 The upper mold blank holder 23 is provided around the molding upper mold 22. That is, the upper mold blank holder 23 is provided so as to surround the molding upper mold 22. The upper mold blank holder 23 holds the plate material W together with the lower mold blank holder 13.
　また、上型ブランクホルダ２３は、上型基部２１に支持された上型ダイ２４の下端部に設けられる。上型ブランクホルダ２３の下面は、水平となっている。上型ブランクホルダ２３は、成形前の初期状態においてその下面が、成形上型２２の成形面２２０よりも下方に位置するように配置される。 Further, the upper die blank holder 23 is provided at the lower end portion of the upper die 24 supported by the upper die base 21. The lower surface of the upper mold blank holder 23 is horizontal. The upper die blank holder 23 is arranged so that the lower surface thereof is positioned below the molding surface 220 of the molding upper die 22 in the initial state before molding.
　また、上型ブランクホルダ２３の下面には、凸部２３２が形成されている。この凸部２３２は、下型ブランクホルダ１３の上面に形成された凹部１３２に板材Ｗを介して嵌合する。これにより、板材Ｗの端部が上型ブランクホルダ２３と下型ブランクホルダ１３とにより把持されて保持される。 Further, a convex portion 232 is formed on the lower surface of the upper die blank holder 23. The convex portion 232 is fitted into the concave portion 132 formed on the upper surface of the lower mold blank holder 13 via the plate material W. Thereby, the edge part of the board | plate material W is hold | gripped by the upper mold | type blank holder 23 and the lower mold | type blank holder 13, and is hold | maintained.
　第１パンチ２５及び第２パンチ２６は、いずれも上型ダイ２４に支持される。第１パンチ２５及び第２パンチ２６はそれぞれ、上型ダイ２４に支持される基部２５１，２６１と、基部２５１，２６１から下方に延出し、先端が小径の先端部２５２，２６２と、を備える。これら第１パンチ２５及び第２パンチ２６は、断面円形状のパンチであり、第１パンチ２５の方が第２パンチ２６よりも大径である。 The first punch 25 and the second punch 26 are both supported by the upper die 24. Each of the first punch 25 and the second punch 26 includes base portions 251 and 261 supported by the upper die 24, and tip portions 252 and 262 that extend downward from the base portions 251 and 261 and have small diameter tips. The first punch 25 and the second punch 26 are punches having a circular cross section, and the first punch 25 has a larger diameter than the second punch 26.
　第１パンチ２５及び第２パンチ２６は、成形上型２２がクッション２２１の作用によりこれらパンチに対して相対的に昇降することで、成形上型２２から突没可能となっている。即ち、成形上型２２がこれらパンチに対して相対的に上昇することでパンチの先端が成形上型２２から突出し、成形上型２２がこれらパンチに対して相対的に下降することでパンチの先端が成形上型２２内に埋没する。
　従って、これらパンチは、成形上型２２が板材Ｗを介して成形下型１２に当接し、成形上型２２がこれらパンチに対して相対的に上昇すると、各パンチの先端部２５２，２６２が成形上型２２から突出する。そして、各パンチの先端部２５２，２６２が、成形下型１２に形成された第１貫通孔１２１及び第２貫通孔１２２にそれぞれ挿入されることで、板材Ｗを打ち抜き加工する。 The first punch 25 and the second punch 26 can project and retract from the molding upper die 22 as the molding upper die 22 moves up and down relative to the punches by the action of the cushion 221. That is, when the molding upper die 22 is raised relative to these punches, the tip of the punch protrudes from the molding upper die 22, and when the molding upper die 22 is lowered relative to these punches, the tip of the punch Is buried in the molding upper die 22.
Accordingly, in these punches, when the molding upper die 22 comes into contact with the molding lower die 12 through the plate material W and the molding upper die 22 rises relative to these punches, the tip portions 252 and 262 of each punch are molded. Projects from the upper mold 22. And the front-end | tip parts 252 and 262 of each punch are each inserted in the 1st through-hole 121 and the 2nd through-hole 122 which were formed in the shaping | molding lower mold | type 12, and the board | plate material W is stamped.
　以上の構成を備える板材加工装置１の動作について、図１～図１６を参照して説明する。
　ここで、図２～図６は、板材加工装置１の動作を説明するための縦断面図である。具体的には、図１は上述したように初期状態を示し、図２は板材Ｗの端部をブランクホルダにより保持したときの状態を示し、図３は板材Ｗをドロー成形しているときの状態を示す。また、図４は板材Ｗの端部をトリム成形したときの状態を示し、図５は型開きしたときの状態を示し、図６は成形品及びスクラップ品を取り出すときの状態を示す図である。
　また、図７～図１１は、板材加工装置１のトリム成形（切断角度０度）を説明するための部分拡大断面図である。図１２～図１６は、板材加工装置１のトリム成形（切断角度８０度）を説明するための部分拡大断面図である。 The operation of the plate material processing apparatus 1 having the above configuration will be described with reference to FIGS.
2 to 6 are longitudinal sectional views for explaining the operation of the plate material processing apparatus 1. FIG. Specifically, FIG. 1 shows the initial state as described above, FIG. 2 shows the state when the end portion of the plate material W is held by the blank holder, and FIG. 3 shows the state when the plate material W is drawn. Indicates the state. 4 shows a state when trimming the end portion of the plate W, FIG. 5 shows a state when the mold is opened, and FIG. 6 shows a state when taking out the molded product and the scrap product. .
7 to 11 are partial enlarged cross-sectional views for explaining trim forming (cutting angle 0 degree) of the plate material processing apparatus 1. FIG. 12 to 16 are partial enlarged cross-sectional views for explaining trim forming (cutting angle 80 degrees) of the plate material processing apparatus 1. FIG.
　先ず、図１に示すように、昇降機構２１０を駆動して上型機構２０を上死点まで上昇させた状態で、搬送装置９により板材Ｗを板材加工装置１に搬送する。このとき、搬送装置９は、搬送した板材Ｗを下型ブランクホルダ１３の上面に載置してセットした後、板材加工装置１から退避する。 First, as shown in FIG. 1, the plate material W is conveyed to the plate material processing apparatus 1 by the conveyance device 9 in a state where the lifting mechanism 210 is driven and the upper mold mechanism 20 is raised to the top dead center. At this time, the conveying device 9 is set by placing the conveyed plate material W on the upper surface of the lower blank holder 13, and then retracts from the plate material processing apparatus 1.
　次いで、図２に示すように、昇降機構２１０を駆動して上型機構２０を下降させていくと、先ず上型ブランクホルダ２３の下面が、板材Ｗの端部の上面に当接する。これにより、上型ブランクホルダ２３と下型ブランクホルダ１３とにより、板材Ｗの端部が挟持されて保持される。 Next, as shown in FIG. 2, when the elevating mechanism 210 is driven to lower the upper mold mechanism 20, first, the lower surface of the upper mold blank holder 23 comes into contact with the upper surface of the end portion of the plate material W. Thereby, the edge part of the board | plate material W is clamped and hold | maintained by the upper mold | type blank holder 23 and the lower mold | type blank holder 13. FIG.
　次いで、図３に示すように、昇降機構２１０を駆動して上型機構２０をさらに下降させていくと、下型ブランクホルダ１３が上型ブランクホルダ２３により下方に押圧される。すると、クッション１３１が圧縮されて下型ブランクホルダ１３が成形下型１２に対して相対的に下降する。これにより、上型ブランクホルダ２３と下型ブランクホルダ１３とにより挟持されて保持された板材Ｗの端部が下方に引っ張られることで、板材Ｗが成形下型１２の成形面１２０に押し当てられる。このとき、成形上型２２の成形面２２０が板材Ｗの上面に当接し、板材Ｗを下方に押圧する。これにより、板材Ｗがドロー成形される。 Next, as shown in FIG. 3, when the lifting mechanism 210 is driven to further lower the upper mold mechanism 20, the lower mold blank holder 13 is pressed downward by the upper mold blank holder 23. Then, the cushion 131 is compressed and the lower mold blank holder 13 is lowered relative to the molded lower mold 12. As a result, the end of the plate material W held between and held by the upper die blank holder 23 and the lower die blank holder 13 is pulled downward, so that the plate material W is pressed against the molding surface 120 of the molding lower die 12. . At this time, the molding surface 220 of the molding upper die 22 contacts the upper surface of the plate material W, and presses the plate material W downward. Thereby, the board | plate material W is draw-molded.
　次いで、図４に示すように、下型ブランクホルダ１３の位置が下死点に達するまで、昇降機構２１０を駆動して上型機構２０をさらに下降させていく。このとき、成形上型２２が板材Ｗを介して成形下型１２に当接することで、クッション２２１が圧縮されて成形上型２２が成形下型１２とともに、第１パンチ２５及び第２パンチ２６に対して相対的に上昇する。すると、第１パンチ２５及び第２パンチ２６の先端部２５２，２６２が成形上型２２の成形面２２０から突出することで、板材Ｗが打ち抜き加工される。打ち抜き加工により生成したスクラップＳ１は、スクラップ受け装置８に収容される。 Next, as shown in FIG. 4, the elevating mechanism 210 is driven to further lower the upper mold mechanism 20 until the position of the lower mold blank holder 13 reaches the bottom dead center. At this time, the upper molding die 22 abuts against the lower molding die 12 via the plate material W, so that the cushion 221 is compressed and the molding upper die 22 is moved together with the lower molding die 12 to the first punch 25 and the second punch 26. Relatively rises. Then, the front end portions 252 and 262 of the first punch 25 and the second punch 26 protrude from the molding surface 220 of the upper mold 22, so that the plate material W is punched. The scrap S1 generated by the punching process is accommodated in the scrap receiving device 8.
　またこのとき、成形上型２２は、上型ブランクホルダ２３及び上型ダイ２４に対しても相対的に上昇する。すると、板材Ｗの端部がさらに下方に引っ張られて、切断刃１２３，１２４が板材Ｗの端部の下面に当接する。これにより、板材Ｗの端部が切断されてトリム成形される。 At this time, the molding upper die 22 also rises relative to the upper die blank holder 23 and the upper die 24. Then, the edge part of the board | plate material W is further pulled below, and the cutting blades 123 and 124 contact | abut to the lower surface of the edge part of the board | plate material W. FIG. Thereby, the edge part of the board | plate material W is cut | disconnected and trim-molded.
　ここで、本実施形態に係る板材加工装置１のトリム成形について、図７～１６を参照してさらに詳しく説明する。
　上述したように、図７～図１１は、板材加工装置１のトリム成形（切断角度小）を説明するための部分拡大断面図である。これら図７～図１１は、例えば０度等の切断角度が小さい位置での部分拡大断面図である。ここで、切断角度とは、切断刃１２３，１２４の上面と板材Ｗのなす角の大きさを意味する。 Here, trim forming of the plate material processing apparatus 1 according to the present embodiment will be described in more detail with reference to FIGS.
As described above, FIGS. 7 to 11 are partially enlarged cross-sectional views for explaining trim forming (small cutting angle) of the plate material processing apparatus 1. 7 to 11 are partially enlarged cross-sectional views at a position where the cutting angle is small, such as 0 degrees. Here, the cutting angle means the size of the angle formed between the upper surfaces of the cutting blades 123 and 124 and the plate material W.
　先ず、図７は、成形前の初期状態を示す図である。図７に示すように、成形下型１２の成形面１２０の外側には、切断刃１２４が上方に突出して設けられている。切断刃１２４の角度（上面と側面の角度）は、例えば９０度に設定される。ただしこれに限定されず、９０度以下の鋭角でもよい。また、切断刃１２４の外側には、切断刃１２４と下型凸部１２６で囲まれた下型凹部１２５が形成されている。
　これに対して、上型ブランクホルダ２３の内側には、切断刃は設けられておらず、下方に突出して先端縁がＲ状の曲面となるように形成された上型凸部２３３が設けられている。この上型凸部２３３は、成形下型１２に設けられた切断刃１２４よりも若干外側に配置され、トリム成形時には成形下型１２の下型凹部１２５内に侵入する。
　なお、図７に示すように初期状態においては、板材Ｗは、下型ブランクホルダ１３と切断刃１２４に当接して載置される。 First, FIG. 7 is a diagram showing an initial state before molding. As shown in FIG. 7, a cutting blade 124 is provided on the outer side of the molding surface 120 of the lower molding die 12 so as to protrude upward. The angle of the cutting blade 124 (the angle between the upper surface and the side surface) is set to 90 degrees, for example. However, the present invention is not limited to this, and an acute angle of 90 degrees or less may be used. A lower mold recess 125 surrounded by the cutting blade 124 and the lower mold protrusion 126 is formed outside the cutting blade 124.
On the other hand, no cutting blade is provided inside the upper die blank holder 23, and an upper die convex portion 233 formed so as to protrude downward and have a tip edge formed into an R-shaped curved surface is provided. ing. The upper mold convex part 233 is disposed slightly outside the cutting blade 124 provided on the molding lower mold 12, and enters the lower mold concave part 125 of the molding lower mold 12 during trim molding.
As shown in FIG. 7, in the initial state, the plate material W is placed in contact with the lower die blank holder 13 and the cutting blade 124.
　次いで、図８は、板材Ｗの端部をブランクホルダにより保持したときの状態を示す図である。図８に示すように、板材Ｗの端部が上型ブランクホルダ２３と下型ブランクホルダ１３により把持されて保持された状態で、下方に引っ張られることで、切断刃１２４を支点として板材Ｗの端部が次第に下方に曲がり始める。即ち、板材Ｗが成形下型１２に押し当てられることで、ドロー成形が開始される。 Next, FIG. 8 is a diagram showing a state when the end portion of the plate material W is held by the blank holder. As shown in FIG. 8, the end of the plate material W is held and held by the upper die blank holder 23 and the lower die blank holder 13 and pulled downward, so that the cutting blade 124 serves as a fulcrum of the plate material W. The edge gradually begins to bend downward. That is, when the plate material W is pressed against the molding lower mold 12, the draw molding is started.
　次いで、図９は、ブランクホルダで把持して保持した板材Ｗの端部をさらに下方に引っ張ってドロー成形しているときの状態を示す図である。図９に示すように、板材Ｗの端部がさらに下方に引っ張られることで、板材Ｗが成形下型１２の下型凸部１２６に当接し、ドロー成形が進行する。 Next, FIG. 9 is a diagram showing a state in which the end portion of the plate material W held and held by the blank holder is further drawn downward to draw. As shown in FIG. 9, when the end portion of the plate material W is further pulled downward, the plate material W comes into contact with the lower mold convex portion 126 of the molded lower mold 12, and the draw molding proceeds.
　次いで、図１０は、ドロー成形が実行されたときの状態を示す図である。図１０に示すように、成形上型２２が板材Ｗを下方に押圧し、成形下型１２との間で板材Ｗを挟持した状態で、板材Ｗの端部がさらに下方に引っ張られる。これにより、板材Ｗは成形下型１２の上面（成形面１２０等）に押し当てられて、ドロー成形が実行される。またこのとき、上型ブランクホルダ２３の上型凸部２３３が板材Ｗに当接することで、成形上型２２は上型ブランクホルダ２３に対して相対的に若干下降する。 Next, FIG. 10 is a diagram showing a state when the draw molding is executed. As shown in FIG. 10, the end portion of the plate material W is further pulled downward in a state where the molding upper die 22 presses the plate material W downward and sandwiches the plate material W with the molding lower die 12. As a result, the plate material W is pressed against the upper surface (the molding surface 120, etc.) of the molding lower mold 12, and the draw molding is executed. Further, at this time, the upper mold convex portion 233 of the upper mold blank holder 23 comes into contact with the plate material W, so that the molding upper mold 22 is slightly lowered relative to the upper mold blank holder 23.
　次いで、図１１は、トリム成形が実行されたときの状態を示す図である。図４で説明したように、成形上型２２が板材Ｗを介して成形下型１２に当接すると、クッション２２１が圧縮されて成形上型２２が成形下型１２とともに、上型ブランクホルダ２３及び下型ブランクホルダ１３に対して相対的に上昇する。即ち、図１１に示すように、上型ブランクホルダ２３及び下型ブランクホルダ１３が、板材Ｗを介して互いに当接している成形上型２２及び成形下型１２に対して、相対的に下降する。すると、板材Ｗは、端部が下方に引っ張られるとともに、上型ブランクホルダ２３の上型凸部２３３により下方に押圧される。このとき、上型凸部２３３の先端縁はＲ状の曲面で形成されているため、上型凸部２３３により板材Ｗが切断されることはない。これにより、板材Ｗの端部の下面に当接していた切断刃１２４によって、板材Ｗの端部が下面側から切断されて、トリム成形される。 Next, FIG. 11 is a diagram showing a state when trim molding is executed. As described with reference to FIG. 4, when the molding upper mold 22 abuts the molding lower mold 12 via the plate material W, the cushion 221 is compressed and the molding upper mold 22 together with the molding lower mold 12 and the upper mold blank holder 23 and It rises relative to the lower mold blank holder 13. That is, as shown in FIG. 11, the upper mold blank holder 23 and the lower mold blank holder 13 are lowered relative to the molding upper mold 22 and the molding lower mold 12 that are in contact with each other via the plate material W. . Then, the end of the plate member W is pulled downward and is pressed downward by the upper convex portion 233 of the upper blank holder 23. At this time, since the leading edge of the upper mold convex portion 233 is formed with an R-shaped curved surface, the plate material W is not cut by the upper mold convex portion 233. Thereby, the edge part of the board | plate material W is cut | disconnected from the lower surface side with the cutting blade 124 contact | abutted to the lower surface of the edge part of the board | plate material W, and trim molding is carried out.
　図１２～図１６は、板材加工装置１のトリム成形（切断角度大）を説明するための部分拡大断面図である。これら図１２～図１６は、例えば８０度等の切断角度が大きい位置での部分拡大断面図である。
　先ず、図１２は、成形前の初期状態を示す図である。図１２に示すように、成形下型１２の成形面１２０の外側には、切断刃１２３が外方に突出して段差状に設けられている。切断刃１２３の角度（上面と側面の角度）は、例えば９０度に設定される。ただしこれに限定されず、９０度以下の鋭角でもよい。
　これに対して、上型ブランクホルダ２３の内側には、切断刃は設けられておらず、内側から外側に緩やかに屈曲して形成された上型凸部２３３が設けられている。即ち、上型凸部２３３の側面と下面の角度は、鈍角に設定されている。例えば、切断角度が８０度の場合、上型凸部２３３の側面と下面の角度は１７０度に設定される。また、この上型凸部２３３は、成形下型１２に設けられた切断刃１２３よりも若干外側に配置される。 12 to 16 are partially enlarged cross-sectional views for explaining trim molding (large cutting angle) of the plate material processing apparatus 1. 12 to 16 are partial enlarged cross-sectional views at a position where the cutting angle is large, such as 80 degrees.
First, FIG. 12 is a diagram showing an initial state before molding. As shown in FIG. 12, a cutting blade 123 is provided on the outer side of the molding surface 120 of the molding lower mold 12 so as to project outward and in a stepped shape. The angle (angle between the upper surface and the side surface) of the cutting blade 123 is set to 90 degrees, for example. However, the present invention is not limited to this, and an acute angle of 90 degrees or less may be used.
On the other hand, no cutting blade is provided inside the upper die blank holder 23, and an upper die convex portion 233 formed by gently bending from the inside to the outside is provided. That is, the angle between the side surface and the lower surface of the upper mold convex portion 233 is set to an obtuse angle. For example, when the cutting angle is 80 degrees, the angle between the side surface and the lower surface of the upper mold convex portion 233 is set to 170 degrees. Further, the upper mold convex portion 233 is disposed slightly outside the cutting blade 123 provided on the molded lower mold 12.
　次いで、図１３は、板材Ｗの端部をブランクホルダにより保持したときの状態を示す図であり、図１４は、ブランクホルダで把持して保持した板材Ｗの端部をさらに下方に引っ張ってドロー成形しているときの状態を示す図である。
　これら図１３及び図１４に示す状態は、図８及び図９で説明した通りである。 Next, FIG. 13 is a diagram showing a state when the end portion of the plate material W is held by the blank holder, and FIG. 14 is a drawing in which the end portion of the plate material W held and held by the blank holder is further pulled downward. It is a figure which shows a state when shape | molding.
The states shown in FIGS. 13 and 14 are as described in FIGS.
　次いで、図１５は、ドロー成形が実行されたときの状態を示す図である。図１５に示すように、成形上型２２が板材Ｗを下方に押圧し、成形下型１２との間で板材Ｗを挟持した状態で、板材Ｗの端部がさらに下方に引っ張られる。これにより、板材Ｗは成形下型１２の上面（成形面１２０等）に押し当てられて、ドロー成形が実行される。 Next, FIG. 15 is a diagram showing a state when the draw molding is executed. As shown in FIG. 15, the end portion of the plate material W is further pulled downward in a state where the molding upper die 22 presses the plate material W downward and sandwiches the plate material W with the molding lower die 12. As a result, the plate material W is pressed against the upper surface (the molding surface 120, etc.) of the molding lower mold 12, and the draw molding is executed.
　次いで、図１６は、トリム成形が実行されたときの状態を示す図である。図４で説明したように、成形上型２２が板材Ｗを介して成形下型１２に当接すると、クッション２２１が圧縮されて成形上型２２が成形下型１２とともに、上型ブランクホルダ２３及び下型ブランクホルダ１３に対して相対的に上昇する。即ち、図１６に示すように、上型ブランクホルダ２３及び下型ブランクホルダ１３が、板材Ｗを介して互いに当接している成形上型２２及び成形下型１２に対して、相対的に下降する。すると、板材Ｗは、端部がさらに下方に引っ張られるとともに、上型ブランクホルダ２３の上型凸部２３３により下方に押圧される。このとき、上型凸部２３３の側面と下面の角度は鈍角であるため、上型凸部２３３により板材Ｗが切断されることはない。これにより、板材Ｗの端部の下面に当接していた切断刃１２３によって、板材Ｗの端部が下面側から切断されて、トリム成形される。 Next, FIG. 16 is a diagram showing a state when trim molding is executed. As described with reference to FIG. 4, when the molding upper mold 22 abuts the molding lower mold 12 via the plate material W, the cushion 221 is compressed and the molding upper mold 22 together with the molding lower mold 12 and the upper mold blank holder 23 and It rises relative to the lower mold blank holder 13. That is, as shown in FIG. 16, the upper mold blank holder 23 and the lower mold blank holder 13 are lowered relative to the molding upper mold 22 and the molding lower mold 12 that are in contact with each other via the plate material W. . Then, the end of the plate member W is further pulled downward, and is pressed downward by the upper mold convex portion 233 of the upper mold blank holder 23. At this time, since the angle between the side surface and the lower surface of the upper mold convex portion 233 is an obtuse angle, the plate material W is not cut by the upper mold convex portion 233. Thereby, the edge part of the board | plate material W is cut | disconnected from the lower surface side by the cutting blade 123 which was contact | abutting to the lower surface of the edge part of the board | plate material W, and trim molding is carried out.
　次いで図５に戻って、トリム成形が完了した後、昇降機構２１０を駆動して上型機構２０を上昇させ、型開きする。このとき、トリム成形により切断されて生成したスクラップＳ２は、下型ブランクホルダ１３上に載置されたままである。 Next, returning to FIG. 5, after the trim forming is completed, the lifting mechanism 210 is driven to raise the upper mold mechanism 20 and open the mold. At this time, the scrap S <b> 2 generated by being cut by trim molding remains placed on the lower mold blank holder 13.
　次いで、図６に示すように、成形下型１２上に載置された成形品Ｍを、搬出装置７が備えるバキュームカップ７０により吸着して搬出する。同時に、下型ブランクホルダ１３上に載置されたスクラップＳ２を、搬出装置７が備える磁石７１により吸着して搬出する。
　以上のようにして、板材Ｗがドロー成形された後、続けてトリム成形される。 Next, as shown in FIG. 6, the molded product M placed on the lower molding die 12 is adsorbed and carried out by a vacuum cup 70 provided in the carry-out device 7. At the same time, the scrap S2 placed on the lower mold blank holder 13 is attracted and carried out by the magnet 71 provided in the carry-out device 7.
As described above, after the plate material W is draw-molded, it is subsequently trim-molded.
　次に、本実施形態に係る板材加工装置１によるトリム成形の切断角度とクリアランスとの関係について説明する。
　ここで、クリアランスとは、従来であれば上刃と下刃で板材Ｗの両側から切断するときの両刃の水平方向の間隔を意味し、本実施形態であれば切断刃１２３，１２４と上型凸部２３３との水平方向の間隔を意味する。 Next, the relationship between the trim forming cutting angle and the clearance by the plate material processing apparatus 1 according to the present embodiment will be described.
Here, the clearance means the horizontal distance between the two blades when cutting from both sides of the plate material W with the upper blade and the lower blade in the conventional case, and in this embodiment, the cutting blades 123 and 124 and the upper die. It means the distance in the horizontal direction from the convex portion 233.
　図１７は、本実施形態に係る板材加工装置１において切断角度θが０度のときのクリアランスＣを示す図である。図１７に示すように、切断角度θが０度である場合には、板材Ｗの下面が切断刃１２４の上面に面接触する。
　図１８は、実施形態に係る板材加工装置１において切断角度θが８０度のときのクリアランスＣを示す図である。図１８に示すように、切断角度θが８０度である場合には、切断刃１２３の上面と板材Ｗのなす角の大きさが８０度である。この場合、上型凸部２３３の側面と下面とのなす角の大きさは、例えば１７０度に設定される。 FIG. 17 is a view showing the clearance C when the cutting angle θ is 0 degree in the plate material processing apparatus 1 according to the present embodiment. As shown in FIG. 17, when the cutting angle θ is 0 degree, the lower surface of the plate W is in surface contact with the upper surface of the cutting blade 124.
FIG. 18 is a diagram illustrating the clearance C when the cutting angle θ is 80 degrees in the plate material processing apparatus 1 according to the embodiment. As shown in FIG. 18, when the cutting angle θ is 80 degrees, the size of the angle formed by the upper surface of the cutting blade 123 and the plate material W is 80 degrees. In this case, the size of the angle formed by the side surface and the lower surface of the upper mold convex portion 233 is set to 170 degrees, for example.
　図１９は、従来及び本実施形態に係る板材加工装置１における切断角度とクリアランスとの関係を示す図である。図１９では、切断角度０度と８０度のそれぞれにおいて、クリアランスと成形不良との関係を示している。
　図１９に示すように、切断角度０度及び８０度いずれにおいても、本実施形態に係る板材加工装置１のトリム成形によれば、クリアランスが大きい場合であっても、従来と比べて成形不良を大幅に削減できることが分かる。即ち、本実施形態に係る板材加工装置１のトリム成形によれば、クリアランスを大きく設定することができ、クリアランスの調整が容易であることが分かる。 FIG. 19 is a diagram showing the relationship between the cutting angle and the clearance in the conventional plate processing apparatus 1 according to the present embodiment. FIG. 19 shows the relationship between the clearance and the molding failure at each of the cutting angles of 0 degree and 80 degrees.
As shown in FIG. 19, even when the cutting angle is 0 degree or 80 degrees, according to the trim forming of the plate material processing apparatus 1 according to the present embodiment, even if the clearance is large, the forming defect is smaller than the conventional case. It turns out that it can reduce significantly. That is, according to the trim forming of the plate material processing apparatus 1 according to the present embodiment, it can be seen that the clearance can be set large and the adjustment of the clearance is easy.
　ここで、図２０は、従来の板材加工装置によるトリム成形（切断角度０度）で切断された板材の切断部分を示す図である。図２０の（ａ）は、クリアランスが小さい場合であり、（ｂ）はクリアランスが大きい場合を示している。図２０に示すように、従来の板材加工装置によるトリム成形では、クリアランスが大きくなると、成形品Ｍの切断部分がスクラップＳ２側に大きく変形し、成形不良となることが分かる。 Here, FIG. 20 is a diagram showing a cut portion of a plate material cut by trim forming (cutting angle 0 degree) by a conventional plate material processing apparatus. 20A shows the case where the clearance is small, and FIG. 20B shows the case where the clearance is large. As shown in FIG. 20, in the trim molding by the conventional plate material processing apparatus, it can be seen that when the clearance is increased, the cut portion of the molded product M is greatly deformed to the scrap S2 side, resulting in molding failure.
　これに対して、図２１は、本実施形態に係る板材加工装置１によるトリム成形（切断角度０度）で切断された板材の切断部分を示す図である。図２１の（ａ）は、クリアランスが小さい場合であり、（ｂ）はクリアランスが大きい場合を示している。図２１に示すように、本実施形態に係る板材加工装置１によるトリム成形では、クリアランスが大きくなっても、成形品Ｍの切断部分の形状が大きく変形することがなく、良好な成形品Ｍが得られることが分かる。 On the other hand, FIG. 21 is a diagram showing a cut portion of a plate material cut by trim forming (cutting angle 0 degree) by the plate material processing apparatus 1 according to the present embodiment. 21A shows a case where the clearance is small, and FIG. 21B shows a case where the clearance is large. As shown in FIG. 21, in the trim forming by the plate material processing apparatus 1 according to the present embodiment, even if the clearance is increased, the shape of the cut portion of the molded product M is not greatly deformed, and a good molded product M is obtained. You can see that
　また、図２２は、従来の板材加工装置１によるトリム成形（切断角度０度）で切断された板材Ｗの切断面付近の断面図である。また、図２３は、本実施形態に係る板材加工装置１によるトリム成形（切断角度０度）で切断された板材Ｗの切断面付近の断面図である。
　図２２に示すように従来の板材加工装置によるトリム成形では、板材Ｗを両側から切断するため、切断された板材Ｗの切断面付近に、「ダレ」が生じた部分、せん断された部分及び破断された部分が確認される。これに対して、本実施形態に係る板材加工装置１によるトリム成形では、板材Ｗを引っ張りながら片側からのみ切断するため、切断された板材Ｗの切断面付近に、大きな「ダレ」が生じた部分と、破断された部分のみが確認され、せん断された部分は確認されない。従って、板材Ｗの切断面付近の断面に、大きな「ダレ」が生じた部分が確認されるとともに、せん断された部分が確認されない場合には、本実施形態に係る板材加工装置１による成形が行われたと判断できる。 FIG. 22 is a cross-sectional view of the vicinity of the cut surface of the plate material W cut by trim forming (cutting angle 0 degree) by the conventional plate material processing apparatus 1. FIG. 23 is a cross-sectional view of the vicinity of the cut surface of the plate material W cut by trim forming (cutting angle 0 degree) by the plate material processing apparatus 1 according to the present embodiment.
As shown in FIG. 22, in the trim forming by the conventional plate material processing apparatus, since the plate material W is cut from both sides, the “sagging” portion, the sheared portion, and the breakage are generated near the cut surface of the cut plate material W. The confirmed part is confirmed. On the other hand, in the trim forming by the plate material processing apparatus 1 according to the present embodiment, since the plate material W is cut only from one side while being pulled, a portion where a large “sag” occurs in the vicinity of the cut surface of the cut plate material W. Only the broken part is confirmed, and the sheared part is not confirmed. Accordingly, in the cross section near the cut surface of the plate material W, a portion where a large “sag” has occurred is confirmed, and when a sheared portion is not confirmed, the plate material processing apparatus 1 according to the present embodiment performs molding. It can be judged that it was broken.
　本実施形態によれば、以下の効果が奏される。
　本実施形態では、板材Ｗの端部を保持する下型ブランクホルダ１３，上型ブランクホルダ２３を、成形下型１２，成形上型２２に対して相対的に昇降させた。これにより、板材Ｗの端部を引っ張ることで板材Ｗを成形面１２０に押し当てることで、板材Ｗを成形した。また、板材Ｗの端部を引っ張ることで切断刃１２３，１２４に当接させることにより、板材Ｗの端部を切断した。
　本実施形態の板材加工装置１によれば、ドロー成形に続けてトリム成形を実行できるとともに、トリム成形時に板材Ｗの端部を引っ張りながら切断できる。即ち、トリム成形時に板材Ｗの端部に張力を付加しながら切断ができるため、切断角度及びクリアランスといったトリム成形条件の許容幅を大きく確保できる。従って、切断角度が大きい場合であってもトリム成形が可能となり、切断角度が大きい場合に従来用いられていたカム機構による斜め方向の切断が不要となり、コストを削減できる。
　また、板材Ｗの端部を引っ張りながら切断できるため、板材Ｗの両側に刃を設ける必要がなくなり、従来のようにせん断位置がずれることもなく、バリや切粉の発生を回避できる。
　また、ドロー成形とトリム成形を続けて実行できるため、ドロー成形で通常用いる下型ブランクホルダ１３，上型ブランクホルダ２３を、トリム成形でも有効利用でき、装置構成を簡略できるとともに工程を簡略化できる。ひいては、成形金型の費用を削減できる。
　また、板材Ｗのドロー成形中に板材Ｗの一部切断が可能となり、成形可能な形状が増加する。 According to this embodiment, the following effects are produced.
In the present embodiment, the lower mold blank holder 13 and the upper mold blank holder 23 that hold the end portion of the plate material W are moved up and down relative to the molding lower mold 12 and the molding upper mold 22. Thereby, the plate material W was shape | molded by pressing the board | plate material W against the shaping | molding surface 120 by pulling the edge part of the plate material W. FIG. Moreover, the edge part of the board | plate material W was cut | disconnected by making the edge part of the board | plate material W contact | abut to the cutting blades 123 and 124 by pulling.
According to the plate material processing apparatus 1 of the present embodiment, trim molding can be executed following draw molding, and cutting can be performed while pulling the end of the plate material W during trim molding. That is, since the cutting can be performed while applying tension to the end portion of the plate material W at the time of trim forming, it is possible to ensure a large allowable range of trim forming conditions such as a cutting angle and a clearance. Therefore, even when the cutting angle is large, trim molding is possible, and when the cutting angle is large, the cutting in the oblique direction by the cam mechanism that has been conventionally used becomes unnecessary, and the cost can be reduced.
Moreover, since it can cut | disconnect while pulling the edge part of the board | plate material W, it becomes unnecessary to provide a blade on both sides of the board | plate material W, a shearing position does not shift | deviate like the past, and generation | occurrence | production of a burr | flash and a chip can be avoided.
Further, since draw molding and trim molding can be performed continuously, the lower mold blank holder 13 and the upper mold blank holder 23 normally used in draw molding can be effectively used in trim molding, and the apparatus configuration can be simplified and the process can be simplified. . As a result, the cost of the mold can be reduced.
Further, it becomes possible to partially cut the plate material W during the draw molding of the plate material W, and the formable shape increases.
　また本実施形態では、ドロー成形時に板材Ｗの端部を引っ張る方向と同じ方向に、板材Ｗの端部を引っ張りながら切断刃１２３，１２４に当接させることにより、板材Ｗの端部を切断してトリム成形を実行した。
　本実施形態によれば、同じ方向に板材Ｗの端部を引っ張りながらドロー成形及びトリム成形を連続的に行うことができるため、装置構成を簡略できるとともに工程を簡略化できる。 Moreover, in this embodiment, the edge part of the board | plate material W is cut | disconnected by making it contact | abut to the cutting blades 123 and 124, pulling the edge part of the board | plate material W in the same direction as the direction which pulls the edge part of the board | plate material W at the time of draw molding. Trim molding was performed.
According to this embodiment, since draw molding and trim molding can be performed continuously while pulling the end portion of the plate material W in the same direction, the apparatus configuration can be simplified and the process can be simplified.
　また本実施形態では、一対の成形金型のうちの一方の成形下型１２にのみ、切断刃１２３，１２４を設けた。
　本実施形態によれば、一対の成形金型のうちの一方の成形下型１２にのみ切断刃１２３，１２４を設けることで、板材Ｗを引っ張りながら板材Ｗの両側ではなく片側からのせん断を実行できる。そのため、上述の効果をより確実に得ることができるうえ、常に同じ位置で切断でき、切断角度及びクリアランスといったトリム成形条件の許容幅をより大きく確保できる。 In this embodiment, the cutting blades 123 and 124 are provided only on one molding lower mold 12 of the pair of molding dies.
According to this embodiment, by providing the cutting blades 123 and 124 only on one molding lower mold 12 of the pair of molding dies, shearing is performed from one side instead of both sides of the sheet material W while pulling the sheet material W. it can. Therefore, the above-described effects can be obtained more reliably, and the cutting can always be performed at the same position, and a larger allowable range of trim forming conditions such as a cutting angle and a clearance can be secured.
　また本実施形態では、上述の板材加工装置１により実行される板材加工方法を提供することで、上述の効果と同様の効果が奏される。 Moreover, in this embodiment, the same effect as the above-mentioned effect is show | played by providing the board | plate material processing method performed with the above-mentioned board | plate material processing apparatus 1. FIG.
［第２実施形態］
　図２４は、本発明の第２実施形態に係る板材加工装置１Ａの初期状態を示す部分拡大断面図である。図２４に示すように、本実施形態に係る板材加工装置１Ａは、上述の第１実施形態に係る板材加工装置１と比べて、切断刃が設けられている位置が相違する。具体的には、第１実施形態に係る板材加工装置１では、板材Ｗの端部が引っ張られる方向（下方）に配置された成形下型１２に切断刃１２３，１２４が設けられるのに対して、本実施形態に係る板材加工装置１Ａでは、板材Ｗの端部が引っ張られる方向（下方）とは反対方向（上方）に配置された上型ブランクホルダ２３Ａに、切断刃２３０Ａが設けられる。 [Second Embodiment]
FIG. 24 is a partially enlarged cross-sectional view showing an initial state of a plate material processing apparatus 1A according to the second embodiment of the present invention. As shown in FIG. 24, the plate material processing apparatus 1A according to the present embodiment is different from the plate material processing device 1 according to the first embodiment described above in the position where the cutting blade is provided. Specifically, in the plate material processing apparatus 1 according to the first embodiment, the cutting blades 123 and 124 are provided on the forming lower mold 12 arranged in the direction (downward) in which the end of the plate material W is pulled. In the plate material processing apparatus 1A according to the present embodiment, the cutting blade 230A is provided on the upper blank holder 23A arranged in the direction (upward) opposite to the direction (downward) in which the end of the plate material W is pulled.
　また、板材加工装置１Ａは、板材加工装置１と比べて、トリム成形後に連続してベンド成形が行われる点が相違する。そのため図２４に示すように、成形下型１２Ａの外周側部分には、内側から順に凹部１２１Ａと凸部１２２Ａが形成されている。また、上型ブランクホルダ２３Ａの内周側部分には、内側から順に凸部２３１Ａと凹部２３２Ａが形成されている。これら成形下型１２Ａと上型ブランクホルダ２３Ａの凹部と凸部が互いに嵌合することで、成形品の端部がベンド成形される。
　なお、上記以外の板材加工装置１Ａの構成については、第１実施形態と同様である。 Further, the plate material processing apparatus 1A is different from the plate material processing apparatus 1 in that bend forming is continuously performed after trim forming. Therefore, as shown in FIG. 24, a concave portion 121A and a convex portion 122A are formed in order from the inside on the outer peripheral side portion of the molded lower mold 12A. Further, a convex portion 231A and a concave portion 232A are formed in order from the inside on the inner peripheral side portion of the upper mold blank holder 23A. The concave and convex portions of the molded lower mold 12A and the upper mold blank holder 23A are fitted to each other, whereby the end of the molded product is bent.
In addition, about the structure of 1 A of board | plate material processing apparatuses other than the above, it is the same as that of 1st Embodiment.
　以上の構成を備える板材加工装置１Ａのトリム成形及びベンド成形について、図２４～図２８を参照して説明する。
　ここで、図２４～図２８は、板材加工装置１Ａのトリム成形及びベンド成形を説明するための部分拡大断面図である。具体的には、図２４は初期状態を示す図であり、図２５は板材の端部をブランクホルダにより保持したときの状態を示す図である。また、図２６は板材をドロー成形しているときの状態を示す図であり、図２７は板材の端部をトリム成形したときの状態を示す図であり、図２８は板材をベンド成形しているときの状態を示す図である。 The trim forming and bend forming of the plate material processing apparatus 1A having the above configuration will be described with reference to FIGS.
Here, FIG. 24 to FIG. 28 are partially enlarged sectional views for explaining trim forming and bend forming of the plate material processing apparatus 1A. Specifically, FIG. 24 is a diagram illustrating an initial state, and FIG. 25 is a diagram illustrating a state when an end portion of a plate material is held by a blank holder. 26 is a view showing a state when the plate material is being drawn, FIG. 27 is a view showing a state when the end portion of the plate material is trim-formed, and FIG. 28 is a view showing a state where the plate material is bend-formed. It is a figure which shows a state when there is.
　先ず、図２４に示す初期状態、即ち型開きした状態では、板材加工装置１Ａ内に投入された板材Ｗは、下型ブランクホルダ１３Ａにより支持されて載置される。
　次いで、図２５に示すように成形上型２２Ａ及び上型ブランクホルダ２３Ａを同時に下降させる。すると、上型ブランクホルダ２３Ａの外周側部分の段差状の下端部が、板材Ｗを介して下型ブランクホルダ１３Ａの段差状の上端部に当接して嵌合する。これにより、板材Ｗの端部が上下のブランクホルダにより把持されて保持される。 First, in the initial state shown in FIG. 24, that is, in a state where the mold is opened, the plate material W put into the plate material processing apparatus 1A is supported and placed by the lower die blank holder 13A.
Next, as shown in FIG. 25, the molding upper die 22A and the upper die blank holder 23A are lowered simultaneously. Then, the step-like lower end portion of the outer peripheral side portion of the upper die blank holder 23A is brought into contact with and fitted into the step-like upper end portion of the lower die blank holder 13A via the plate material W. Thereby, the edge part of the board | plate material W is hold | gripped and hold | maintained by the upper and lower blank holders.
　次いで、図２６に示すように、成形上型２２Ａ及び上型ブランクホルダ２３Ａをさらに下降させる。すると、成形上型２２Ａが板材Ｗを介して成形下型１２Ａに当接する。これにより、成形上型２２Ａの成形面２２０Ａと成形下型１２Ａの成形面１２０Ａとの間に板材Ｗが挟まれて、ドロー成形が行われる。このとき、板材Ｗは、その端部がブランクホルダにより把持されて引っ張られた状態で、ドロー成形される。 Next, as shown in FIG. 26, the molding upper die 22A and the upper die blank holder 23A are further lowered. Then, the molding upper die 22A comes into contact with the molding lower die 12A via the plate material W. Thus, the plate material W is sandwiched between the molding surface 220A of the molding upper mold 22A and the molding surface 120A of the molding lower mold 12A, and draw molding is performed. At this time, the plate material W is draw-molded in a state in which the end portion is gripped and pulled by the blank holder.
　次いで、図２７に示すように、上型ブランクホルダ２３Ａを下型ブランクホルダ１３Ａとともに、さらに下降させる。これは、下型ブランクホルダ１３Ａが備える図示しないクッション材が縮むことで可能となっている。これにより、上下のブランクホルダが、成形上型２２Ａ及び成形下型１２Ａに対して相対的に下降する。すると、上型ブランクホルダ２３Ａの凸部２３１Ａが、成形下型１２Ａの凹部１２１Ａ内に嵌挿し始める。このとき、上型ブランクホルダ２３Ａの凸部２３１Ａの先端縁に設けられた切断刃２３０Ａにより、板材Ｗが切断され、トリム成形が行われる。 Next, as shown in FIG. 27, the upper die blank holder 23A is further lowered together with the lower die blank holder 13A. This is possible because the cushion material (not shown) provided in the lower mold blank holder 13A is contracted. Thereby, the upper and lower blank holders are lowered relative to the upper molding die 22A and the lower molding die 12A. Then, the convex part 231A of the upper mold blank holder 23A starts to be inserted into the concave part 121A of the molded lower mold 12A. At this time, the plate material W is cut by the cutting blade 230A provided at the tip edge of the convex portion 231A of the upper blank holder 23A, and trim molding is performed.
　次いで、図２８に示すように、上型ブランクホルダ２３Ａを下型ブランクホルダ１３Ａとともに、さらに下降させる。すると、上型ブランクホルダ２３Ａの凸部２３１Ａが、切断された板材Ｗの端部を折り曲げながら、成形下型１２Ａの凹部１２１Ａ内の奥深くまで嵌挿する。これにより、ベンド成形が行われる。 Next, as shown in FIG. 28, the upper die blank holder 23A is further lowered together with the lower die blank holder 13A. Then, the convex portion 231A of the upper die blank holder 23A is inserted deeply into the concave portion 121A of the molded lower die 12A while bending the end portion of the cut plate material W. Thereby, bend molding is performed.
　以上の動作をする本実施形態の板材加工装置１Ａによれば、第１実施形態と同様の効果が奏される。また、ドロー成形とトリム成形に加えて、ベンド成形も連続して行うことができ、より効率的な成形が可能となる。 According to the plate material processing apparatus 1A of the present embodiment that operates as described above, the same effects as those of the first embodiment are exhibited. In addition to draw molding and trim molding, bend molding can be performed continuously, and more efficient molding is possible.
　なお、本発明は上記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良は本発明に含まれる。 It should be noted that the present invention is not limited to the above-described embodiment, and modifications and improvements within the scope that can achieve the object of the present invention are included in the present invention.
　１，１Ａ…板材加工装置
　１２，１２Ａ…成形下型（成形金型）
　１３，１３Ａ…下型ブランクホルダ（保持金型）
　２２，２２Ａ…成形上型（成形金型）
　２３，２３Ａ…上型ブランクホルダ（保持金型）
　１２０，２２０，１２０Ａ，２２０Ａ…成形面
　１２３，１２４，２３０Ａ…切断刃
　Ｗ…板材 1, 1A ... plate material processing device 12, 12A ... lower mold (molding mold)
13, 13A ... Lower mold blank holder (holding mold)
22, 22A ... Molding upper mold (molding mold)
23, 23A ... Upper die blank holder (holding die)
120, 220, 120A, 220A ... molding surface 123, 124, 230A ... cutting blade W ... plate material

Claims (6)

  1. 　板材を加工する板材加工装置であって、
    　前記板材を成形する成形面を有する成形金型と、
    　前記板材の端部を保持するとともに前記成形金型に対して相対的に昇降可能な保持金型と、
    　前記成形金型の前記成形面より外側に設けられ、前記板材の端部を切断する切断刃と、を備え、
    　前記成形金型は、前記保持金型が前記成形金型に対して相対的に昇降することによって、前記板材の端部が引っ張られて前記板材が前記成形面に押し当てられることで前記板材を成形し、
    　前記切断刃は、前記保持金型が前記成形金型に対して相対的に昇降することによって、前記板材の端部が引っ張られて当接することにより前記板材の端部を切断することを特徴とする板材加工装置。     A plate material processing apparatus for processing a plate material,
    A molding die having a molding surface for molding the plate material;
    A holding mold that holds the end of the plate and can be moved up and down relatively with respect to the molding mold;
    A cutting blade provided on the outer side of the molding surface of the molding die and cutting an end of the plate material,
    In the molding die, the holding die is moved up and down relative to the molding die so that an end portion of the plate material is pulled and the plate material is pressed against the molding surface. Molded,
    The cutting blade is characterized in that the end of the plate is cut when the holding mold is moved up and down relative to the forming mold and the end of the plate is pulled and brought into contact therewith. Plate material processing equipment.
  2. 　前記切断刃は、前記成形金型による成形時と同じ方向に前記保持金型が昇降することによって、前記成形金型による成形時と同じ方向に前記板材の端部が引っ張られて当接することにより、前記板材の端部を切断することを特徴とする請求項１に記載の板材加工装置。 When the holding die is moved up and down in the same direction as in the molding by the molding die, the cutting blade is brought into contact with the end of the plate material being pulled in the same direction as in the molding by the molding die. The board | plate material processing apparatus of Claim 1 which cut | disconnects the edge part of the said board | plate material.
  3. 　前記成形金型は、一対で構成され、
    　前記切断刃は、前記一対の成形金型のうちの一方の成形金型にのみ設けられることを特徴とする請求項１又は２に記載の板材加工装置。     The molding die is composed of a pair,
    The plate material processing apparatus according to claim 1, wherein the cutting blade is provided only in one of the pair of molding dies.
  4. 　板材を成形金型により絞り成形するドロー工程と、
    　前記板材の端部を切断刃により切断するトリム工程と、を有する板材加工方法であって、
    　前記ドロー工程は、保持金型により板材の端部を保持した状態で引っ張りながら、前記板材を前記成形金型の成形面に押し当てて絞り成形し、
    　前記トリム工程は、前記保持金型により前記板材の端部を保持した状態で引っ張りながら、前記板材の端部を前記切断刃に当接させることにより切断することを特徴とする板材加工方法。     A drawing process of drawing a plate material with a molding die;
    A trimming step of cutting an end portion of the plate material with a cutting blade, and a plate material processing method comprising:
    The draw step is drawn by pressing the plate material against the molding surface of the molding die while pulling while holding the end portion of the plate material by the holding die,
    The said trim process cut | disconnects by making the edge part of the said board | plate material contact | abut to the said cutting blade, pulling in the state which hold | maintained the edge part of the said board | plate material with the said holding metal mold | die.
  5. 　前記ドロー工程と前記トリム工程は、前記保持金型により前記板材の端部を保持した状態で同じ方向に引っ張ることを特徴とする請求項４に記載の板材加工方法。 5. The plate material processing method according to claim 4, wherein the draw step and the trim step are pulled in the same direction in a state in which an end portion of the plate material is held by the holding mold.
  6. 　前記トリム工程では、一対で構成された前記成形金型のうちの一方の成形金型にのみ設けられた切断刃により、前記板材の端部を切断することを特徴とする請求項４又は５に記載の板材加工方法。 6. The trimming process according to claim 4, wherein an end portion of the plate member is cut by a cutting blade provided only in one of the pair of molding dies. The board | plate material processing method of description.
PCT/JP2015/062399 2014-04-25 2015-04-23 Plate material machining device and plate material machining method WO2015163418A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09314243A (en) * 1996-05-30 1997-12-09 Toyota Motor Corp Drawing, punching machine and its method
JP2000158054A (en) * 1998-12-02 2000-06-13 Matsushita Electric Ind Co Ltd Pinch trimming process
DE102011110597A1 (en) * 2010-08-18 2012-07-26 Elisabeth Braun Device for hot-forming sheet-shaped semi-finished product, has cutting device which is activated irrespective of movement of die and stamp, after curing semiconductor-finished material
JP2014512275A (en) * 2011-04-29 2014-05-22 ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト Manufacturing method and manufacturing apparatus for flange-free drawn parts
JP2014512276A (en) * 2011-04-29 2014-05-22 ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト Method and apparatus for manufacturing flanged drawn member by simultaneous cutting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09314243A (en) * 1996-05-30 1997-12-09 Toyota Motor Corp Drawing, punching machine and its method
JP2000158054A (en) * 1998-12-02 2000-06-13 Matsushita Electric Ind Co Ltd Pinch trimming process
DE102011110597A1 (en) * 2010-08-18 2012-07-26 Elisabeth Braun Device for hot-forming sheet-shaped semi-finished product, has cutting device which is activated irrespective of movement of die and stamp, after curing semiconductor-finished material
JP2014512275A (en) * 2011-04-29 2014-05-22 ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト Manufacturing method and manufacturing apparatus for flange-free drawn parts
JP2014512276A (en) * 2011-04-29 2014-05-22 ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフト Method and apparatus for manufacturing flanged drawn member by simultaneous cutting

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