JP3147993U - Press bending die - Google Patents

Abstract

To provide a press bending die capable of preparing various upper dies such as V-shaped bending processing, Z bending processing, R processing, etc. by a simple setup operation. An upper die 10 of a press bending die comprises a combination of one die body selected from a plurality and a mounting portion 11 which is attached to a movable portion of a press machine and detachably supports the die body. The plurality of mold bodies are composed of mold parts 13 having different shapes or sizes, and a base part 15 having the same thickness formed integrally with the mold part and having a contact surface 15A at the end, and the mounting part receives a side surface of the base part. A composite step portion is formed which includes a surface 11A, a contact surface 11B that extends in a direction orthogonal to the end of the receiving surface and contacts the contact surface of the base portion, and a mounting surface 11C that is continuous with the contact surface and mounts a fixed plate. A fixed plate is mounted on the surface and is fastened and fixed by screws 14, and the base portion is sandwiched between the side surface of the fixed plate and the receiving surface. [Selection] Figure 1

Description

  The present invention relates to a press bending die, and more particularly to a die capable of preparing various upper dies such as a V-shaped bending process, a Z bending process, and an R process by a simple setup operation.

  For example, there are various types of press bending machines such as press brakes, but the processing mode is basically a blank set between the punch (upper die) and die (lower die), and the male part of the punch The die and the female part of the die are matched, a bending load is applied to the blank (metal plate), and the blank is plastically deformed.

  Of the press work, bending is frequently applied to many parts of the press product, but the width and shape of the work may differ depending on the product. For example, the bending angle is 20 °, 30 °, 90 ° in the case of V-shaped bending, different dimensions in the case of Z bending, and R (curvature radius) is 3, 3.5 in the case of R processing. A wide variety of shapes, sizes, and angles such as 4 ... 20 are required (Patent Document 1, Patent Document 2).

  Therefore, in the case of press bending, it is necessary to replace the mold every time the product specifications are different, and not only the work is very complicated, but it is also necessary to prepare various molds, resulting in high cost. End up.

  Therefore, a mounting step portion having an L-shaped cross section is formed at the tip portion of the punch and die facing each other, and the punch and die are mounted on the press bending machine and blocked on the punch and die mounting step portion. Is set to be replaceable, positioned by the rising surface of the mounting step portion, and the block is held on the mounting step portion by the magnetizing action of a mounting screw or magnet, and the tip corner surface or the block upper surface orthogonal to the block There have been proposed press bending dies in which a molding surface is constituted by a rising surface (Patent Documents 3 and 4).

JP 2001-1048 A Registered Utility Model No. 3006018 Japanese Utility Model Publication No. 55-122921 JP 2003-117607 A

  However, the press bending die described in the conventional publication cannot be applied to V-shaped bending, Z-bending, and R-processing.

  In view of such problems, the present invention has an object to provide a press bending die that can prepare various upper dies such as a V-shaped bending process, a Z bending process, and an R process by a simple setup operation.

  Therefore, the press bending die according to the present invention is a press bending die for bending a blank by applying a bending load by an upper die and a lower die matching operation, wherein the upper die is one die body selected from a plurality And a mounting part that is attached to the movable part of the press machine and detachably supports the mold body, and the plurality of mold bodies are formed integrally with the mold parts of different shapes or sizes and the terminal ends. And a base portion having the same thickness as each other, the mounting portion extending in the direction of mold matching operation, a receiving surface for receiving a side surface of the base portion, and a direction of mold matching operation at the end of the receiving surface. A composite step portion is formed which includes a contact surface extending in a direction orthogonal to the contact surface contacting the contact surface of the base portion and a mounting surface extending in the direction of the mold matching operation in succession to the corresponding surface and mounting a fixing plate. The mounting surface is fastened by screws are the fixed plate is mounted, said base portion is characterized by being sandwiched between the side and the receiving surface of the fixed plate.

  The main feature of the present invention is that the upper mold is divided into a mold body and a mounting part, and a mold body of a different shape or size is detachably supported on a standard base part to constitute a mold body so that the mold part can be replaced. It is in the point made.

  Thereby, it is possible to meet the product specifications by exchanging the mold part, and various upper molds such as V-shaped bending process, Z-bending process, and R process can be prepared by a simple setup operation.

  Another feature of the present invention resides in that a contact surface is formed in a direction orthogonal to the end of the receiving surface and is brought into contact with the contact surface of the base portion of the mold body.

  Thereby, since the load applied to the mold part of the mold main body from the blank can be reliably received at the contact surface, the bending process can be reliably performed.

  Although the base parts of the plurality of mold part main bodies are formed to have a constant thickness, there is a risk that the thickness may vary due to wear or the like. In that case, it is preferable to use one or a plurality of thin spacers.

  Hereinafter, the present invention will be described in detail based on specific examples. 1 to 5 show a preferred embodiment of a press bending die according to the present invention. In the figure, the bending die is composed of a combination of an upper die 10 and a lower die 20. The upper die 10 includes an attachment portion 11 to a movable portion (not shown) of a press bending machine and a die body selected from a plurality of die portions.

  The plurality of mold bodies are any of mold parts 13 having different shapes or dimensions, for example, V-shaped bending mold parts having different angles α, Z-bending mold parts having different dimensions, and R-bending mold parts having different curvature radii. The mold parts 13, 13 ′, 13 ″ and the base part 15 of the same thickness w that is formed integrally with the mold parts 13, 13 ′, 13 ″ and has a contact surface 15 A at the end.

  The mounting portion 11 extends in the direction of the mold matching operation and receives the side surface of the base portion 15 and receives the side surface of the base portion 15. A contact portion 11B that is in contact with the contact surface 11B and a mounting surface 11C that extends in the direction of the mold matching operation and that mounts the fixing plate 12 are formed.

  Further, an insertion hole 12A is formed in the fixing plate 12, a screw hole 11D is formed in the mounting surface 11C of the mounting portion 11, the fixing plate 12 is mounted on the mounting surface 11C, and the insertion hole 12A of the fixing plate 12 is in the insertion hole 12A. A screw 14 is screwed and the fixing plate 12 is fastened and fixed to the mounting surface 11C by being screwed into the screw hole 11D of the mounting surface 11C. The fixing plate 12 and the receiving surface 11A of the mounting portion 11 are fixed. The base 15 of the mold body is sandwiched between the two.

  When V-shaped blank B is processed, blank B is set between the upper mold 10 and the lower mold 20, the upper mold 10 is lowered, and the mold is moved to the opposite lower mold portion to perform a bending load on the blank B. Is added, the blank B can be bent into a V shape.

  At this time, since the load from the blank B can be received by the contact surface 11D of the mounting portion 11 via the contact surface 15A of the base portion 15, a bending load can be applied to the blank B with certainty.

  Further, when a lateral load component is applied to the mold body for some reason, the load component is received by the portion of the receiving surface 11A of the mounting portion 11 and the fixing plate 15, so that the mold body is displaced or deformed. The blank B can be reliably bent.

  When the product specification is changed, it is only necessary to remove the screw 14 and replace the die main body, and various upper molds 10 such as V-shaped bending, Z-bending and R-processing can be prepared by a simple setup operation.

  When the thickness of the base portion 15 of the mold main body is reduced due to wear or the like, a thin spacer may be used to compensate for the thickness.

It is sectional drawing which shows preferable embodiment of the press bending die which concerns on this invention. It is a schematic perspective view which shows the upper mold | type in the said embodiment. FIG. 3 is a cross-sectional view of FIG. 2. It is a figure which shows the type | mold part for V-shaped bending process in the said embodiment. It is a figure which shows the type | mold part in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Upper mold | type 11 Mounting part 11A Receiving surface 11B Contact surface 11C Mounting surface 11D Screw hole 12 Fixing plate 12A Insertion hole 13, 13 ', 13 "Mold part 14 Screw 15 Base part 15A Contact surface

Claims (3)

In a press bending die that bends a blank by applying a bending load by an upper die and lower die matching operation,
The upper die is considerably combined from a combination of one die body selected from a plurality and a mounting portion that is attached to the movable part of the press machine and removably supports the die body.
The plurality of mold bodies are composed of mold parts having different shapes or dimensions, and base parts integrally formed with the mold parts, having contact surfaces at the ends, and having the same thickness.
The mounting portion extends in the direction of mold matching operation, and receives a side surface of the base portion. The contact surface extends in a direction perpendicular to the direction of mold matching operation at the end of the receiving surface and contacts the contact surface of the base portion. And a composite step portion comprising a mounting surface on which a fixed plate is mounted, extending in the direction of mold matching operation continuously to the corresponding surface, is formed.
The press bending die, wherein the fixing plate is mounted on the mounting surface and is fastened and fixed by screws, and the base portion is sandwiched between a side surface of the fixing plate and a receiving surface.   2. The plurality of mold bodies have a mold part of any one of a V-bend mold part having a different angle, a Z-bend mold part having a different dimension, and an R-bend mold part having a different curvature radius. Press bending die.   A screw hole or an insertion hole is formed in the fixing plate, a screw hole is formed in the mounting surface of the mounting portion, and a screw inserted or screwed into the fixing plate is screwed into the screw hole of the mounting surface. The press bending die according to claim 1, wherein the fixing plate is fastened and fixed to the mounting surface.

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