JP2986417B2 - Method of transferring cut pieces in shearing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transferring cut pieces in a shearing machine having a function of discharging (transferring) cut pieces sheared and separated from a plate-like work to the front.

[0002]

2. Description of the Related Art When a cut piece cut by a shearing machine is discharged (transferred) to the front, there are cases where the cut pieces cannot be collected behind the shearing machine due to a space problem, and when a workpiece is cut at right angles on two sides. This is a case in which the work efficiency is improved. In addition, although it is the structure which transfers a cut piece to a back direction, there exists Unexamined-Japanese-Patent No. 57-181517 as a prior example whose overall structure is similar.

[0003]

By the way, in the above-mentioned prior art, when the work is performed by using a return conveyor, the front portion of the conveyor is raised at the time of setting the work so as to support the work so as not to bend by its own weight, and during cutting, The front part of the conveyor is lowered to avoid interference with the upper blade.
Then, after cutting, the front part of the conveyor is raised, and then the belt is rotated in the reverse direction to transfer the work onto the front table. However, in the configuration in which the cut material (cut pieces) is discharged forward using the return conveyor, a drive device is required for the return conveyor, and the structure and control are complicated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has been made in consideration of the above-mentioned problems. A ram having a blade is provided so as to be vertically movable, a supporter for supporting a cut piece sheared and separated from the work is provided so as to be vertically movable, and positioning of the work to be sheared by the upper blade and the lower blade in the front-rear direction. In the method for transferring cut pieces in a shearing machine provided with a back gauge capable of reciprocating in the front-rear direction, the supporter is raised after the upper blade and the lower blade shear the work, and then the back gauge is moved forward. This is a method for transferring cut pieces in a shearing machine that moves and transfers cut pieces on the supporter onto the table by the back gauge.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. To facilitate understanding, I will explain the structure of the shearing machine,
Since the overall configuration of the shearing machine is already known, it will be briefly described.

Referring to FIG. 1, a shearing machine 1
Is provided with side frames 3R, 3L erected on both sides, and an upper frame 7 swingable in a vertical direction with the shaft 5 as a fulcrum is provided above the side frames 3R, 3L.
A fluid cylinder 9 is mounted on the front side (left side in FIG. 1) of the upper frame 7. This fluid cylinder 9
A ram 11 which moves up and down by the operation of is provided at a front portion of the upper frame 7, and an upper blade 13 is attached to a lower portion of the ram 11. The side frame 3
A plate holder 15 for pressing and fixing the work W to the table 17 is provided at the front of the R and 3L.

A table 17 on which the work W is placed is provided below the side frames 3R and 3L, and a lower blade 19 is fixed to the rear end of the table 17. A drive motor 21 is disposed at a position behind the ram 17. A lower portion of the ram 11 rotatably supports a front side of a ball screw 23 extending in a front-rear direction (left-right direction in FIG. 1), and a rear side of the ball screw 23 is connected to the drive motor 21. A nut member 25 is screwed into the ball screw 23 so as to be movable in the front-rear direction. A back gauge 27 is provided below the nut member 25 for abutting and positioning the end face of the work W.

When the drive motor 21 is driven by the above configuration, the ball screw 23 is rotated and the nut member 25 is rotated.
, The back gauge 27 is positioned at a desired position in the front-rear direction. The work W is placed on the table 17 and moved rearward (to the right in FIG. 1) to
The workpiece W is positioned in the front-rear direction by abutting the end face of the workpiece W against the back gauge 27.

Next, by operating the fluid cylinder 9 to move the ram 11 up and down, the work W is sheared at a desired position by the cooperation of the upper blade 13 and the lower blade 19. At the time of the shearing, the work W on the table 17 is pressed from above and fixed by operating the plate holder 15.

[0010] Behind the lower blade 19 (right side in FIG. 1)
Is provided with a material support device 29. The material support device 29 is provided with a supporter 31 for supporting a portion of the workpiece W projecting rearward from the lower blade 19 and positioned to be sheared and separated.
Is provided. A plurality of rotatable support rollers 33 are supported on the supporter 31 at appropriate intervals in the front-rear direction (the left-right direction in FIG. 1). The upper part of the peripheral surface of each support roller 33 is at the same height position as the upper surface of the lower blade 19.

As shown in FIG. 1, the rear part of the supporter 31 is moved up and down by a fluid actuator 35. That is, as shown in FIG. 1, the upper end of the fluid actuator 35 is pivotally supported by the support frame 39 attached to the side frames 3R and 3L by the pin 37. The lower end of a vertically movable piston rod 41 attached to the fluid actuator 35 is attached to the rear of the supporter 31 by a pin 43.

With the above configuration, the back gauge 27 is positioned at a desired position in the front-rear direction, for example, as shown in FIG. The work W is pressed and fixed on the table 17 by operating the presser 15.

Next, when the ram 11 is lowered, FIG.
, The work W is cut by the cooperation of the upper blade 13 and the lower blade 19. At this time, in synchronization with the lowering of the ram 11, the supporter 31 of the material supporting device 29 rotates counterclockwise in FIG.

When the shearing of the workpiece W is completed, as shown in FIG. 4, the ram 11 is raised and the supporter 31 is also raised to the original position. Then, in the state shown in FIG. 4, when the drive motor 21 is driven to rotate the ball screw 23 and the back gauge 27 is moved forward (to the left in FIG. 5) via the nut member 25, the supporter shear separated cut pieces W _a on 31 is moved forward by being pushed by the back gauge 27. Since moving back gauge 27 to a position close to the lower blade 19 (forward end) as shown in Figure 5, it is possible to completely transfer the cut piece W _A to the front side of the table 7 above.

When the work W is set on the table 17 and cut into a predetermined width, the supporter 31 supports and shears the portion of the work W which is to be sheared. By extending the rod 41 and keeping the rear part of the supporter 31 lowered, the cut piece is discharged backward.

In this embodiment, the swing type shearing machine has been described. However, the present invention can be applied to a guillotine type shearing machine.

[0017]

As will be understood from the above description, according to the present invention, the forward movement of the sheared and separated pieces is performed by moving the back gauge forward. The back gauge functions as a device for positioning the work in the front-rear direction and for transferring the work in the front direction. Therefore, for example, a driving device is not required for a supporter or the like, and the configuration is further simplified.

[Brief description of the drawings]

FIG. 1 is a side view of a shearing machine according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a state at the time of setting a work when cutting the work.

FIG. 3 is an explanatory diagram of a state when a workpiece is cut.

FIG. 4 is a diagram illustrating a state when cutting is completed.

FIG. 5 is an explanatory diagram of a state when a cut piece is transferred forward.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shearing machine 11 Ram 13 Upper blade 17 Table 19 Lower blade 27 Back gauge 29 Material support device 31 Supporter 35 Fluid actuator

Claims (1)

(57) [Claims] A table (1) supporting a work (W).
The above work (W) in cooperation with the lower blade (19) provided in 7)
(11) with upper blade (13) for shearing
Is provided so as to be vertically movable, and a supporter (31) for supporting a cut piece sheared and separated from the work (W) is provided so as to be vertically movable, and is sheared by the upper blade (13) and the lower blade (19). In a method of transferring cut pieces in a shearing machine provided with a back gauge (27) for positioning a work (W) in the front-rear direction so as to be able to reciprocate in the front-rear direction, the upper blade (13) and the lower blade (19) are used. After raising the supporter (31) after the work (W) is sheared, the back gauge (27) is moved forward, and the cut piece on the supporter (31) is moved by the back gauge (27) to the table ( 17) A method of transferring cut pieces in a shearing machine, wherein the cut pieces are transferred upward.