JP2603297Y2 - 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 material supporting device for a shearing machine that supports a workpiece when performing a shearing process on the workpiece.

[0002]

2. Description of the Related Art Conventionally, as a material supporting device for supporting a work when performing a shearing process on the work with a shearing machine, a floor-standing type, an electromagnetic type, and a ram hanging type are known.

In a floor-standing type material supporting apparatus, the supporter is lowered during cutting of a workpiece in order to prevent interference between the upper blade and the supporter. Therefore, the workpiece hangs during cutting. Further, in the electromagnetic type material supporting apparatus, the work is supported at the center of the cut during preparation for cutting, and the work is dropped by demagnetizing when the cutting is completed. This electromagnetic type has a weak supporting capacity and can support only a thin plate, and has a non-magnetic material (SU
S, aluminum, etc.) cannot be supported.

In order to solve these problems, a ram-suspending type material supporting device has been proposed.
The structure is known as disclosed in Japanese Patent Application Laid-Open No. 8918, and the hanging precision of the work is prevented to improve the cutting accuracy.

[0005]

In the above-mentioned conventional ram suspension type material supporting apparatus, a material having a small cutting width falls from between the supporter and the lower blade, or is deformed and caught. As a result, there is a problem that it is difficult to take out the cut material after cutting. In addition, there is a problem that the space between the supporter and the lower blade is narrow, and it is difficult to replace the upper and lower blades.

[0006] The object of the present invention is to solve the above-mentioned problem by enabling a narrow cutting material to be discharged, preventing the cutting material from being caught between the supporter and the lower blade, and Another object of the present invention is to provide a material supporting device in a shearing machine that facilitates maintenance such as replacement work of a lower blade.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a shearing method for shearing a workpiece by cooperation of an upper blade provided on a vertically movable ram and a lower blade provided on a table. In the machine, a supporter capable of supporting a work is provided on a guide portion in the front-rear direction provided on the ram so as to be movable in the front-rear direction and the rear side is swingably movable in the vertical direction, and the position of the supporter is set to the front side. This is a configuration in which a position changing device that can be freely changed to a position and a rear position is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. Since the overall configuration of the shearing machine is already known, it will be briefly described.

Referring to FIGS. 1 and 2, the shearing machine 1 includes side frames 3R, 3L standing on both sides.
And an upper frame 7 swingable around the crankshaft 5 as a fulcrum at an upper portion between the side frames 3R and 3L.
A fluid cylinder 9 is mounted on the front side (left side in FIG. 1) of the upper frame 7. A ram 11 that moves up and down by the operation of the fluid cylinder 9 is provided in front of the upper frame 7,
The upper blade 13 is attached to the lower part of the. At the front of the side frames 3R and 3L, a plate presser 15 for pressing and fixing the work W is provided.

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 a final rear end of the table 17. A drive motor 21 is mounted on the rear side of the side frames 3R and 3L. At the lower portion of the ram 11, a front side of a ball screw 23 extending in the front-rear direction (left-right direction in FIG. 1) is attached.
The rear side is connected to the drive motor 21. A nut member 25 is screwed into the ball screw 23, and a back gauge 27 is provided below the nut member 25 for abutting and positioning the end surface of the work W.

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

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

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 that supports the work W positioned so as to protrude rearward from the lower blade 19, with reference to FIGS. 3, 4, 5, and 6. A shaft 33 extending in the left-right direction is provided at the front of the supporter 31.
Are penetrated, and pinions 35R and 35L are attached to both ends of the shaft 33.

The racks 37R, 35R are provided below the pinions 35R, 35L so as to mesh with the pinions 35R, 35L.
37L is attached via front brackets 39R and 39L. Therefore, the supporters 31
It is movable in the front-rear direction by the length of 7R, 37L. The front brackets 39R and 39L are connected to the ram 11
Is fixed to the lower part of the housing with a plurality of bolts 41.

The supporter 31 and the pinions 35R, 35
L, guide members 43R and 43L for guiding the supporter 31 in the front-rear direction are provided. The guide surfaces 43S of the guide members 43R and 43L provide the rack 3
7R and 37L are mounted and fixed with bolts 45 from below. Guide grooves 43G are formed in the guide portions 43R and 43L, and roller followers 47R and 47L are attached to the shaft 33 so as to slide in the guide grooves 43G. Therefore, the roller followers 47R,
47L guides the supporter 31 in the front-rear direction by sliding in the front-rear direction in the guide groove 43G. Moreover, it also serves as a stopper for positioning the forward end and the backward end when the supporter 31 is moved in the front-rear direction.

The supporter 31 is provided so as to be capable of changing its position between a front position moved forward and a rear position moved backward. That is, as shown in FIGS. 1, 3, 5, and 6, the shaft 33 on the left side of the supporter 31 is passed through the hole 51 on one side of the arm 49, and
A slider 55 is rotatably mounted in the hole 53 behind the 9. The pin 63 is inserted through the hole 59 of the block 57 and the hole 61 of the slider 55 fixed to the side frame 3L with bolts. The block 57 is provided with two front and rear holes 59 for inserting pins 63. By inserting the pins 63 into the front and rear holes 59, the supporter 31 is positioned at the front position and the rear position. Things.

As shown in FIG. 5, a spherical bearing 65 is attached to the front hole 51 of the arm 49, and is rotatable by the spherical bearing 65. A ball plunger (not shown) is attached to the block 57 to prevent the pin 63 from coming off. From the above, the position change of the supporter 31 to the front and rear position can be easily performed by inserting and removing the pins 63 into and out of the two holes of the block 57.

Further, the pinion 35R, 35L, the rack 3
Since the right and left movements of the supporter 31 are synchronized by the 7R and 37L, when the supporter 31 is moved in the front-rear direction, the pin 63 is removed without a handle or the like, and the supporter 31 can be easily moved by hand. The back of the supporter 31 is shown in FIG.
As shown in FIG. 7, the fluid actuator 67 moves in the vertical direction. That is, as shown in FIG. 1, the upper end of the fluid actuator 67 is pivotally supported by the support frame 71 attached to the side frames 3R, 3L by the pin 69. The lower end of the piston rod 73 attached to the fluid actuator 67 is attached to the rear of the supporter 31 with a pin 75.

In order to discharge a narrow cutting material backward,
A shooter 77 is attached to a lower portion of the supporter 31. And when discharging narrow cutting material backward,
As shown in FIG. 1, by extending the piston rod 73 of the fluid actuator 67 and keeping the rear portion of the supporter 31 lowered, the gap between the shooter 77 and the lower frame 79 is almost eliminated, and cutting material may fall. And the cut material is discharged backward through the shooter 77. The gap between the shooter 77 and the supporter 31 is desirably set to a size that allows the deformed cutting material to pass through. In the case of maintenance such as replacement of the lower blade 19 and the like, the maintenance work can be easily performed by holding the arm 49 in the hole 61 behind the block 57 and inserting the pin 63 into the hole 61. it can. In the case of cutting, which is a normal operation, the arm 49 is inserted into the hole 59 in front of the block 57.

When the work W is set on the table 17 and cut into a certain width, the supporter 31 is raised at the rear of the supporter 31 in the state of the front position.
After cutting, the cut material is discharged backward. When the cut material is to be discharged forward after cutting, the cut material is discharged forward by the back gauge 27.

Further, at the time of trimming (cut off), the work W is set and cut while the rear of the supporter 31 is lowered, and after cutting, the cut material is discharged backward in this state. become.

The present invention is not limited to the above-described embodiment, but can be implemented in other forms by making appropriate changes. As a mechanism for synchronizing the left and right when the supporter 31 is moved in the front-back direction,
Instead of the pinions 35R and 35L and the racks 37R and 37L, a chain, a sprocket, or the like may be used. Further, as a driving means for moving the supporter 31 in the front-rear direction, a fluid actuator, an electric motor, a feed screw, a nut, or the like may be used, and the right and left positioning may be performed simultaneously. When the fluid actuator and the electric motor, the feed screw, and the nut move in the front-rear direction, the left and right synchronization mechanisms may be omitted.

[0023]

As can be understood from the above description of the embodiment, in the present invention, the supporter 31 capable of supporting the work W can be moved in the front-rear direction by the front-rear guide provided on the ram 11. In addition, since the rear side is swingably supported in the vertical direction, and a position changing device that can change the position of the supporter 31 between the front position and the rear position is provided, the supporter 31 is positioned at the front position. When the supporter 31 is moved up and down integrally with the ram 11 to shear the work W by holding the work W, the work W can be easily supported and swingable up and down. The workpiece W after the shearing can be easily discharged backward.

When the supporter 31 is positioned at the rear side, the supporter 31 can be held in a state of being largely separated from the lower blade.
Should not be in the way.

[Brief description of the drawings]

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

FIG. 2 is a rear view of FIG.

FIG. 3 is an enlarged view of a part viewed from an arrow III in FIG. 1;

FIG. 4 is an enlarged view of a part viewed from an arrow IV in FIG. 2;

FIG. 5 is an enlarged view of a portion viewed from an arrow V in FIG. 2;

FIG. 6 is an exploded view of the components shown in FIG. 5;

[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 67 Fluid actuator 77 Shooter

Claims (1)

(57) [Scope of request for utility model registration] 1. A shearing machine for shearing a work (W) by cooperation of an upper blade (13) provided on a vertically movable ram (11) and a lower blade (19) provided on a table (17). , A supporter (3) capable of supporting a work (W) is provided on a front-rear direction guide portion provided on the ram (11).
1) is provided so as to be movable in the front-rear direction and the rear side is swingably supported in the vertical direction, and a position changing device is provided which can change the position of the supporter (31) to a front position and a rear position. A shearing machine characterized by the following.