JPS58192711A - Cutting device for angle member - Google Patents

Abstract

PURPOSE:To shear angle steel by one action, by a method wherein a mounting stationary die in which the angle steel is inserted is arranged at the center, a punch having a cutter edge corresponding to a cutting shape toward the die is provided and they are driven for shearing by interlocking them with each other. CONSTITUTION:A mounting stationary die 1 in which a molding M is inserted at its center is arranged laterally in an axial direction. Three punches 2, 3 and 4 are arranged on both sides and the upper part centering around the die 1, and the punches are provided with cutter edges 2a, 3a and 4a respectively. Each of the cutting edges 2a, 3a and 4a is set so as to operate in order of 2a 3a and 4a against the molding M. Through insertion of the molding M, a switch is actuated, each punch is operated and the molding M is sheared.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting device (c) for applying transverse shearing in the axial direction to an angle member having a bent shape with a substantially U-shaped cross section, such as a molding.

Conventionally, when cutting the end of a molding, if the cross-sectional shape is approximately U-shaped (see Figure 1), the shearing process is applied to each of the 11 sides, so three punches and fixed dies are placed at different positions. Arrange the groups and place molding on each one.
Shearing treatment is applied by changing the ii'r potential. However, in this cutting process, the three pieces must be sheared separately, which requires a lot of man-hours and is time-consuming. The surface of the molding is easily damaged because it has to be inserted. In addition, when the cutting edge must be sheared into a complicated shape, such as when processing the end of a molding, first the end A of the molding is pressed against a reference surface and the side surface pattern A is cut off.
Next, in the same way, hit the M straddle A against the reference surface and cut off the bridging edge, and finally (butt the second side edge a to the bridging edge A to the reference surface and cut off the remaining side end wall C). However, shearing by changing the cutting criteria in this way tends to cause variations in the cut shape, which is not good. There was an inconvenience that the surface of the molding was easily scratched.

SUMMARY OF THE INVENTION An object of the present invention is to provide an improved angle member cutting device in order to eliminate such drawbacks.

Therefore, in a cutting device that is not compatible with the present invention, a fixed die into which the angle member is fitted and placed is arranged in the center, and the angle member is oriented toward the fixed die in a manner corresponding to the cutting shape. .

By arranging a plurality of punches each having a different cutting edge, and driving the punches in conjunction with each other for shearing, the structure is such that all shearing processing can be performed in one motion.

This will be explained below based on the embodiment shown in Figures 2.3.4.

In the illustrated embodiment, the workpiece is a molding M having a generally U-shaped tank cross section as an angle cut, and the ends of the molding M are crossed on each side, and the stump edges a, b, cl have a complicated shape and have different positions on each side. Two forming cutting devices are constructed.

In this cutting device, a fixed die 1 in the center (in which the molding M is fitted and mounted) is arranged with the axial direction of the fixed die 1 being approximately the same as the cross-sectional shape of the molding M. The molding machine has an outer shape of 1, and a molding machine is installed so that the molding M inserted from the side can be placed on the axis of the ring. Three punches 2.3.4 are arranged to shear in the orthogonal direction.Punch 2 has a cutting edge 21 that projects obliquely to shear stump #13, and punch 3 has a cutting edge 21. The punch has a flat pushing blade 3a that forms an inverted stump edge, and the punch has a cutting edge 4 with two notches shaped like a 3 in accordance with the curved side shape of the molding M.
I have a. Each of these cutting edges 2m, 331, 4a
are formed in a separate state, but the molding M is substantially continuous and molded to form a continuous stump edge a-b-c.Also,
Each cutting edge 2m + 3a * 4m is provided on each side (because the two-crossing positions are different, the positions are shifted from each other, and are arranged so as to be able to shear and slide with respect to each cutting edge of the fixed die 1. The die I is provided with a notch 1a to form a cutting edge capable of shearing and sliding with the punch 2.
For this purpose, the end of the fixed die I is designed as a cutting edge. Each punch 2, 3.4 may be configured to be driven by a fluid cylinder or the like, but in the illustrated embodiment, the punch 2.4 is a cam 5.6, and the t-+ punch 3 is an elevating mechanism supported by a cam 5.6. It is mounted in a protruding manner on a plate (not shown). The lifting plate has a spring (
(not shown), and if it is suppressed by a press device or the like provided separately, it can be moved further downward. The punches 2.4 are arranged so as to be able to slide relative to the fixed die l (=) with a slide par 9.10, and are biased in tension in the backward direction by a spring (not shown). For the latter, 1sr
Iiii is formed on the planned surface 2b.

A cam 5.6 contacts and suppresses the punch 2.4 so as to be able to shear and move against a spring that tensions and biases the punch 2.4. Punch attached to the lifting plate 3. The cams 5.6 have slightly different protruding height positions, and are set so that each cutting edge is operated in the order of 2a→3&→4a with respect to the molding M.

In this way, the molding M is placed so as to be inserted onto the fixed die from the bottom of the drawing in Figure 3 in the cutting device for the angle member.At this time, the tip of the molding M When the switch (not shown) installed on the back of the abutting plate is activated, the lifting plate can be lowered.When the lifting plate moves downward, the punch 2 is first fixed. Cut one side of the molding M diagonally ≦ twice between the notch edge formed on the side of the die L, then punch 3
is inserted into the notch 1a of the fixed die 1 (2) to push off the bridging part of the molding, and further, the punch 4 finally pushes off the edge of the molding M between the edge of the fixed die 1 and the edge of the molding M. In this operation order, when the punch 4 operates, the punch 3 fits into the notch 1a of the fixed die 1 (2) and supports the fixed die 1 from behind, so the molding M
You will be able to press the edges accurately. Immediately after finishing this cutting process, the cam 5.6. The punch 3 retreats upward, the punch 2.4 moves backward by the tension of the spring, and the chip M1 (see Figure 1) is formed on the die plate 11 without changing the shape of the molding M. In the above-described embodiment, the molding M, which has a substantially U-shaped cross section, is cut across a molding M having a complex shape in which the positions of the stump edges on each side are different. Based on the case, this cutting device can be widely applied to angle members with a cross section of approximately r, U-shape, etc.
In addition, when cutting the cut end in a straight line (; (2) is also applicable.

As described above, according to the fourth aspect of the present invention, it is possible to cut across each side surface by inserting and retracting the angle member twice, which improves work efficiency and reduces damage to the surface. Moreover, even when cutting into a complicated cut shape, it can be formed into a uniform basic shape.

[Brief explanation of drawings]

Figure m1 is a perspective view of the angle member showing the cut. FIG. 2 is a perspective view showing the positional relationship between a punch and a fixed die in a cutting device according to the present invention, FIG. 3a is an exploded view of the cutting device,
Figure 3 is a plan view of the same, and Figures 4a and 4b are a diagram and a plan view showing the shearing operation state of the device. l: identification die, 1a: notch, 2.3.4: punch, 2j
L, 3a, 4a: cutting edge. 3rd close a. 31st Bb 1 4th close a 4th decoy.

Claims (4)

[Claims] (1) A cutting device that performs transverse shear processing in the axial direction on an angle member having a bent shape such as a molding that has a substantially U-shaped cross section. A fixed die is arranged in the center so that it can be fitted and placed in the direction, and a plurality of punches that shear and move in conjunction with each other from the direction orthogonal to the fixed die are arranged in correspondence with @face 4 of the angle member, - A cutting device for an angle member, characterized in that each of the cutting edges is shaped into a substantially continuous shape and arranged 17 respectively. (2) In an angle member having a cross section U and a U-shaped bent shape such as a molding, so as to form stump edges that have different transverse positions for each of the 111 sides and are continuous with each other,
A cutting device that applies an axial transverse shearing process, the cutting device comprising:
A fixed die with approximately the same outer shape that allows the angle member to be inserted and mounted in the axial direction is placed in the center, and a punch that shears and moves in conjunction with the fixed die in the direction perpendicular to the fixed die is attached to each of the angle members. A cutting device for an angle member, characterized in that two devices are arranged on the left and right and vertically upward in correspondence with the side surfaces, and each of these cutting edges are arranged in a substantially continuous shape of a book in a staggered position. (3) Either one of the left and right punches presses one side of the angle member with the notch edge formed on the side surface of the fixed die, and the other side presses the angle member with the end line of the identification die. Claim f82, in which the #1 surface of the angle member is slid and sheared, and the vertically upper punch is inserted into the notch of the fixed die to press the bridging plane of the angle member. Cutting device as described in section. (4) The punch is interlocked in the following order: the one that presses between the notch line of the fixed die, the one that inserts and descends into the notch of the fixed die, and the one that slides and shears between the edge of the fixed die. A carpet cutting device comprising: a carpet cutting device according to claim 3;