US 4,532,792 AGranted

Apparatus for adjusting to tool length of panel forming machine

AssigneeMaru Kikai Kogyo Co., Ltd.

InventorToshio Hongo

Life of this patent

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Abstract

This invention relates to a forming machine which is composed of several types of split dies in an upper die. The length of the upper die is adjusted by changing the combination of the split dies. The upper die assembly has an upper die body mounted on the lower end of a ram. A group of upper split dies are slideably inserted laterally of the die and in the lower portion of the upper die body. A number of upper thin dies are inversely mounted at the center of the upper split die group. A select finger driving mechanism is provided at the front of the upper die body to slide the upper split dies in the lateral direction of the die. An inverting mechanism is provided at the rear of the upper die body to invert the desired number of the upper thin dies and locate them between the split dies to form a die of the desired bending length.

Claims6

Dependent claims

A tool length exchanging device in a forming machine for bending the edge of a metal sheet comprising:

a ram (4) having a lower end,
a top tool body (5) mounted on the lower end of said ram (4),
a bottom tool (2) mounted below the top tool body (5),
a top tool including a group of top tool segments (6) slideable in a transverse direction of said top tool at the lower end of said body (5),
a number of thin top tool segments (8) invertably mounted at the center of said group of said top tool segments (6), each of said thin top tool segments having a thin width substantially less than each of said top tool segments,
a movable tool (3) rotating at 90.degree. around both of said top tool and said bottom tool (1, 2) and said top and bottom tools retaining the metal sheet (40),
a sheet finger driving mechanism (14) provided at the front of said body (5) to slide said top tool segments (6) in said transverse direction of the tool, and an inverting mechanism (32, 34, 35, Cy 7) provided at the rear side of said top tool body (5) to invert a predetermined number of said thin top tool segments (8) in a direction other than said transverse direction.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/499,773Filed 31 May 1983
Priority: JP 57-136452[U]8 Sep 1982
Granted: 6 Aug 1985
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B21D 5/04
Bending sheet metal along straight lines, e.g. to form simple curves: on brakes making use of clamping means on one side of the work
B21D 5/042
On brakes making use of clamping means on one side of the work: with a rotational movement of the bending blade
B21D 5/047
On brakes making use of clamping means on one side of the work: length adjustment of the clamping means
B21D
Working or processing of sheet metal or metal tubes, rods or profiles