JPH0224632Y2 - - Google Patents

Description

[Detailed description of the invention] The invention relates to an L-shaped shearing device in which the upper and lower shearing blades are L-shaped. This relates to an L-shaped shearing device in which a blade is considerably shorter than the length of the other side, and a rotating device is provided on the feeding table portion to adsorb the plate material to be sheared and rotate it by 90 degrees or an integral multiple thereof.

First, a conventional L-shaped shearing device will be explained based on FIGS. 1 and 2.

The conventional L-shaped shearing device 1 shown in FIG. This is a processing machine in which a plate material 9 to be sheared is inserted between the plate material 9 to be sheared and a movable blade 5 is driven and moved to obtain a rectangular product from the plate material 9 to be sheared in one step,
In a portion where the plate material 9 to be sheared is moved on the material feeding table 11, a movement positioning device 13 for the plate material 9 to be sheared, which is numerically controlled, for example, is provided.

The conventional L-shaped shearing device 1 illustrated in FIG.
The lengths of the two sides of the movable blade 5 and the corresponding fixed blade 7, which are at right angles to each other, are either exactly the same length or have some length, but as is clear from Fig. 1, the inside of the machine frame It is located in

In FIG. 2, the vertical blade of the fixed blade 7 is the depth direction blade 15 (also referred to as the gap direction blade).
The left and right blades are referred to as forward blades 17.

However, although the conventional blanking machine 3 as described above has the advantage of producing a square product from the sheared plate 9 in one stroke, the blanking machine 3 is used to cut out a square with a narrow side width of the sheared plate 9. Shearing operations are rarely performed, and most blanking operations are used to obtain so-called rectangular products in which the length of the short side is less than half the length of the long side, as shown in FIG.

On the other hand, depending on the length of the depth direction blade 15, it is necessary to provide a space between the top and bottom of the machine frame of the blanking machine 3 in the depth direction. If we call it the length G, for example, if the gap length G is halved, the strength around the gap of the upper machine frame will be (1/2) ³ = 1/8 of the original strength.

That is, if the gap length is exactly half of that shown in Fig. 2, as shown in G ^- in Fig. 3, the strength around the gap is only 1/8.

The present invention provides a blanking machine 3 with a light structure and low cost in accordance with the above-mentioned practical usage conditions, and a rotating device 19 for the sheared plate material 9 is provided on the material feeding table 11, so that the overall cost is still low. An inexpensive and practical L-shaped shearing device 1 was obtained.

In the device of this embodiment shown in FIGS. 4 and 5,
The depth direction blade 15 is considerably shorter than the length of the front blade 17
As is clear from FIGS. 2 and 4, they are located outside the machine frame. The blanking machine 3, which has a gap length G ^- in the depth direction that is slightly larger than the depth direction blade 1, has a material feeding table 11 in front (on the right side in both FIGS. 4 and 5). Further in front of 11 (on the right side in FIGS. 4 and 5), a movement positioning device 13 for the sheared plate material 9, such as a numerical control device, is provided.

In FIGS. 4 and 5, the plate material 9 to be sheared (second
(see Fig. 3)
The retracting claw device 23 that pulls the plate material 9 to be sheared toward the gripping claws 21 is attached to a carriage 25 so as to be able to adjust its position, and the carriage 25 is attached to a guide rail 29 provided horizontally on a carriage base 27.
The carriage base 27 is moved and positioned by numerical control in the vertical direction in FIG.
The motor 39 moves the carriage 25 vertically in the figure 4, and the motor 41 moves the carriage 25 vertically in the figure 4. This is a drive source that drives the carriage base 27 in the left-right direction in FIG.

The rotating device 19 has a large number of magnets 45 facing upward on the outer periphery of a disc-shaped rotating table 43, and an annular ball bush 47 similar to that provided on the entire surface of the material feeding table is provided inside the magnets.

The shaft 49 of the rotary table 43 is connected to the fluid pressure cylinder 5
The other piston rod 53 is provided with a bevel gear 55 via a spline or the like. This bevel gear 55 meshes with a small-diameter bevel gear 59 rotated by a drive motor 57 such as a pulse motor with a brake, and accurately rotates the rotary table 43 forward and reverse by an integral multiple of 90 degrees.

In order to shear products A, B, C, D, and E from the plate material 9 to be sheared as shown in FIG. 2 in one process using the apparatus of this embodiment described above, the method shown in (1) in FIG. In this state, position it using the lower vertical positioning gauge 61 shown in FIG.
is pulled in and aligned with the gripping device 21 to grip the plate material 9 to be sheared, and moved numerically to A ^- , B ^- , C ^-
are sheared in one step, and the remaining sheared plate material 9
is located at the center of the rotating device 19, and the rotating device 19
The magnet 45 is activated by operating the fluid pressure cylinder 51 of
The moving positioning device 1
3 to the right end shown in Figure 4,
Next, the electric motor 57 is driven to rotate the plate 9 to be sheared 90 degrees counterclockwise in the example shown in FIG. are the vertical positioning gauge 65 and the gripping device 2 shown on the upper side in FIG.
The plate material 9 to be sheared, which has been positioned by 1 and 1, is moved to perform the shearing indicated by D- ^{and E-} in Fig. 3.

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims for utility model registration, and the particular core of the present invention is "fixed blade 7 and movable blade 7". 5
The gap length G - of the machine frame in the shearing device is determined by arranging each of the depth direction blades at positions outside the machine frame, and forming the length of the depth direction blades to be considerably shorter than the length of the front direction blades ^. is formed to be smaller than the length of the forward blade, and the material feeding table 11 is provided with a rotating device for horizontally rotating the plate material to be sheared.

That is, in the present invention, by arranging the depth direction blade at a position outside the machine frame, for example, the second
A, B, C, A ^- of plate materials as shown in Fig. 3,
When shearing the B ^- , C ^- part, the unsheared D, E, D ^- ,
The E ^- section does not interfere with the machine frame, and the A, B, C, ^A- , ^B- , and C ^- sections of the plate can be easily sheared. Furthermore, by reducing the length G ^- of the gap of the machine frame, the strength around the gap of the machine frame is increased, and the machine frame is simplified and lightened. and,
By reducing the above gap length G ^- ,
The new problem of difficulty in shearing products with large dimensions in the depth direction is addressed by changing the orientation of the plate material to be sheared using a rotating device.

As already understood, the present invention is different from simply providing a rotating device;
The new problem caused by reducing the gap length G ^- is solved by locating the depth direction blade outside the machine frame and using a rotating device.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional L-shaped shearing device;
The figure is an explanatory diagram of a conventional L-shaped shearing procedure, and FIG. 3 is an explanatory diagram of an L-shaped shearing procedure by the device according to the present invention.
FIG. 4 is a plan view of an embodiment of the present invention, and FIG. 5 is an elevational view of the same. 1... L-shaped shearing device, 5... Movable blade, 7...
Fixed blade, 11...material feeding table, 15...depth direction blade, 17...forward direction blade, 43...rotary table.

Claims (1)

[Scope of utility model registration request] It is a shearing device that shears two perpendicular sides from the plate material to be sheared in one step, and works in collaboration with the L-shaped fixed blade 7 and the fixed blade 7 arranged on one side of the material feeding table 11 that supports the plate material to be sheared. Each of the depth-direction blades of the movable blade 5 for shearing the plate material to be sheared is arranged at a position outside the machine frame, and the length of each depth-direction blade is formed to be considerably shorter than the length of each front-direction blade. The gap length G ^- of the machine frame in the shearing device is formed to be smaller than the length of the forward blade, and the material feeding table 11 is provided with a rotation device for horizontally rotating the plate material to be sheared. An L-shaped shearing device that is characterized by a