JP3442527B2 - Shearing machine return conveyor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a return conveyor for a shearing machine that shears a workpiece with a shearing machine and then conveys the sheared workpiece to the near side. 2. Description of the Related Art Conventionally, a return conveyor in a shearing machine is provided behind a lower blade in order to rework or check a processing state of a work which has been sheared by cooperation of an upper blade and a lower blade. The provided conveyor is reversed and returned to the table on the near side. [0003] By the way, since the above-mentioned conventional conveyor is reversed to return the sheared workpieces to the table on the front side one by one, the productivity is improved. There was a problem that can not be achieved. [0004] It is an object of the present invention to provide a return conveyor for a shearing machine which can improve productivity by accumulating a plurality of sheared workpieces on a conveyor and returning them to a table on the near side at a time. Is to do. SUMMARY OF THE INVENTION [0005] The present invention is based on the foregoing.
Shirring machine
In front of the base frame located at the lower rear of the lower blade prepared for
On the side, the lower part of the base frame hanging part via the swing axis
The base frame is installed vertically
Upper and lower parallel parts pivotally connected to the front end of the
At the rear end side of the link, the conveyor frame is suspended via a pin
Pivotally provided, the rear end of the conveyor frame
The above-mentioned shearing machine
Supports the workpiece cut by the thin and moves it back and forth
A conveyor belt that can be freely fed is provided so that it can rotate
The work accumulated on the conveyor belt has a certain height.
A detection sensor for detecting that the
When the first driving means for vertically moving the frame is provided,
In both cases, the base frame hanging portion is swung in the front-rear direction.
And a second driving means for driving the motor. An embodiment of the present invention will be described below in detail with reference to the drawings. Since the structure of the shearing machine in the present embodiment is already known, it will be schematically described. Referring to FIG. 7, the shearing machine 1 includes an upright side frame 3, and a lower frame 5 is provided upright at a lower front side of the side frame 3. A table 7 is provided on an upper portion of the lower frame 5 and a lower blade 9 is fixedly provided on a rear end of the table 7. An upper frame 11 is provided on the upper front side of the side frame 5, and a plate holder 13 which is vertically movable by a drive mechanism (not shown) is provided below the upper frame 11. The side frame 3 is provided with a ram 15 which can be moved up and down by a driving device (not shown). A lower portion of the ram 15 is used for shearing a work in cooperation with the lower blade 9. A blade 17 is provided. Further, the lower frame 5
A rear plate holder (not shown) which can be moved up and down by a driving device (not shown) is provided at the rear portion. Reference numeral 19 denotes a shooter. A ram frame 21 is integrated with the ram 15, and a ball screw 23 extending in the front-rear direction (left-right direction in FIG. 7) is rotatably supported below the ram frame 21. . This ball screw 2
A drive motor 25 is connected to a rear portion of the ball screw 3, and a back gauge 27 is screwed to the ball screw 23. The back gauge 27 is provided with an abutting portion 29. With the above configuration, when the drive motor 25 is driven, the ball screw 23 is rotated, and the back gauge 27 is moved back and forth. Therefore, the back gauge 27 is positioned based on the shear length of the work to be sheared, and the rear end of the work is abutted against the abutting portion 29, and then the ram 15 is moved up and down to move the upper blade. The work is sheared by the cooperation of the lower blade 9 and 17. When the work is cut, the plate holder 13 is lowered and the work is pressed from above and below if the reverse plate holder is also used, so that the shearing operation with high processing accuracy is performed. A support conveyor 3 movable in the front-rear direction is provided in the side frame 3 behind the lower blade 9.
1 is provided. More specifically, FIGS. 3, 4, and 5
6 and FIG. 6, a running rail 33 is laid on the floor so as to extend in the front-rear direction, and the running rail 33 is rotatably mounted on the lower portion of the four corners of the frame-shaped base frame 35. The supported wheel 37 is the bracket 3
Riding through 9. A front portion on the base frame 35 (FIG. 3,
4 and 5, a base frame vertical portion 41 is provided to be movable back and forth. That is, FIG.
As shown in FIG. 4, the lower portion of the base frame vertical portion 41 is pivotally supported by a swing shaft 43 so as to be able to move back and forth. A rear portion on the base frame 35 (FIG. 3,
Base frame rising portions 45 are integrally provided on the left and right sides (right portion in FIG. 4). Further, a frame-shaped conveyor frame 47 is provided above the base frame 35, and a conveyor frame hanging part 49 hanging downward is integrated with a rear part (the right part in FIGS. 3 and 4) of the conveyor frame 47. Have been. As shown in FIG. 3, a plurality of upper and lower parallel first and second links 51 and 53 are connected to the conveyor frame hanging portion 49 and the base frame hanging portion 41 by pins 55, respectively. ing. A plurality of conveyor vertical cylinders 57 as first driving means are mounted on the base frame 35, and the ends of piston rods 59 mounted on the conveyor vertical cylinder 57 are fixed to the conveyor frame 47. I have. A second frame is provided on the base frame 35.
A plurality of base frame hanging parts swing cylinders 61 as driving means are attached, and a piston rod 63 mounted on the base frame hanging parts swing cylinder 61 is fixed to the front part of the first link 51. I have. A conveyor drive motor 67 is provided at a lower portion of the conveyor frame 47 at a substantially central portion in the front-rear direction via a motor base 65, and a pulley 69 is mounted on an output shaft of the conveyor drive motor 67. I have. A belt 73 is wound around this pulley 69 and another pulley 71. A shaft 75 extending in the left-right direction is mounted on the pulley 71, and a driving pulley 77 for a conveyor is mounted on both ends of the shaft 75. A conveyor driven pulley 79 is provided at both ends at the front end of the conveyor frame 47. A conveyor belt 81 is wound around the conveyor driven pulley 79 and the conveyor driving pulley 77. When the conveyor vertical cylinder 57 is operated by the above configuration, the conveyor frame 47 is moved to the first position via the piston rod 59 as shown in FIG.
The link 51 and the second link 53 move up and down in a horizontal state, and are positioned at three positions indicated by arrows A, B, and C. That is, at the position A, the conveyor belt rises to the pass line, and the upper blade 17 and the lower blade 9 support and lower the work when shearing the work. At the position B, the horizontal movement is performed while slightly retreating from the position at the position A, and the work which has been sheared is discharged in this state. The C position is inclined and positioned rightward by operating the swing cylinder 61 of the vertically extending base frame. In this state, the scraps on the conveyor belt 81 are conveyed to the conveyor belt 81 by rotating the conveyor belt 81 in a counterclockwise direction by rotating the conveyor drive motor 67 in the counterclockwise direction. It falls from the shooter 83 provided on the driven pulley 79 side, and is stored in the scrap box 85 provided behind the lower frame 5. When the conveyor driving motor 67 is driven, the shaft 75 is rotated via the pulley 69, the belt 73 and the pulley 71. Since the conveyor drive pulley 77 is rotated by the rotation of the shaft 75,
Conveyor drive pulley 77 and conveyor driven pulley 79
Then, the conveyor belt 81 wound around is rotated. In FIG. 3, an alignment plate 87 for stacking the sheared workpieces in a well-aligned manner and a piler 89 are movably provided at the upper right end of the base frame rising portion 45. The piler 89 is a vertically movable stacking platform 9.
1 and a support plate 93 that can be moved in the front-rear direction by the length of the work W that has been sheared on the stacking table 91. Accordingly, in the state of the position B, the work W which has been subjected to the shearing process on the conveyor belt 81 is rotated clockwise by rotation of the conveyor belt 81 so that the alignment plate 87 and the support plate 93 are moved from the conveyor driving pulley 77 side. And is accumulated on the accumulation table 91. As described above, the conveyor vertical cylinder 57
When the conveyor frame 47 provided with the conveyor rises via the first link 51 and the second link 53 by the operation of
In FIG. 8, when it is at the upper position, the tip of the conveyor, that is, the driven pulley 79 for the conveyor is approached until immediately after the lower blade 9 or the reverse plate press (not shown) immediately behind the lower blade 9, and when the conveyor frame 47 is lowered, , FIG.
In the lower position, the tip of the conveyor, that is, the driven pulley 79 for the conveyor can be approached immediately after the shooter 19 or the reverse plate holder (not shown), so that a smooth work flow can be achieved even when the work is supported, transported, and returned. Can be made possible. The conveyor frame 47 having a conveyor consisting of the conveyor driving pulley 77, the conveyor driven pulley 79 and the conveyor belt 81 is horizontally moved by the operation of the conveyor vertical cylinder 57, so that the back gauge 2 is provided.
Since the work supporting portion can be supported by the conveyor without worrying about interference with the base member 7 until the shearing process, and the base frame hanging portion 41 swings in the front-rear direction by the operation of the base frame hanging portion swing cylinder 61. , And a scrap discharge space is formed between the tip of the driven driven pulley 79 and the lower blade 9 and the like. Therefore, the scrap can be easily discharged from the space, and the scrap and the work can be prevented from being mixed and conveyed by the conveyor. Since the tip of the conveyor driven pulley 79 can be brought to the position immediately after the lower blade 9 and the like, it is advantageous for work support and can return to a work having a short front-rear width. Since there is a mechanism for accumulating particularly narrow workpieces on the conveyor belt 81 and returning the workpieces to the table 7 side, the workpieces are sheared one by one and accumulated on a piler 89 provided at the rear. Alternatively, it is possible to accumulate the narrow workpieces on the conveyor belt 81 and return it to the front when the number of sheets reaches a certain number. As shown in FIG. 1, a support plate 95 is integrated on the conveyor frame 47. At the front and rear portions of the support plate 95, a driven pulley 79 for a conveyor and a drive pulley 77 for a conveyor are mounted on the left and right ends of the rotating shaft 97, respectively. A slide plate 101 is provided on the support plate 95 via a belt guide 99. Brackets 103 are attached to the left and right ends of the conveyor driven pulley 79 at the front end of the support plate 95, and the work to be accumulated on the conveyor belt 81 has a constant height. A detection sensor 105 such as a photoelectric switch for detecting the occurrence is provided. With the above structure, the work which has been sheared is accumulated on the conveyor belt 81 based on the flowchart shown in FIG. 2, and when the work having a certain height is detected, the conveyor belt 81 is reversed. The operation of returning to the table 5 will be described. In FIG. 2, the conveyor belt 81 is stopped in step S1, and the conveyor belt 81 is raised to the middle end in step S2. In step S3, the integrated work W is detected by the detection sensor 105, and if the height of the work W is not detected, the process proceeds to step S3.
In step S4, the foot switch is turned ON, and in step S5, the shearing machine is started. Next, the process returns to the step before step S3. When the height of the integrated work W is detected by the detection sensor 105 in step S3, the flow proceeds to step S6.
It is determined whether to start the return. If the return is not to be started, the process proceeds to before step S4. If the return is to be started, the process proceeds to step S7, where the conveyor belt 81 is rotated forward and rotates for a certain period of time. Step S8
As a result, the conveyor belt 81 is raised, and the back gauge 27 is started to be inverted, so that the interference between the conveyor belt 81 and the back gauge 27 is prevented. In step S9, the conveyor belt 81 is rotated reversely for a certain period of time. Then, when the reset button is pressed in step S10, the reversal of the back gauge 27 is released, and if the processing is not completed in step 11, the back gauge 27 is returned to the position before step S2. Rotating the belt once and then rotating it backward is necessary when the conveyor belt 81 is lifted.
This is to separate W from the lower blade 9. The work W sheared by the shearing machine 1 is once conveyed onto a conveyor belt 81 of a return conveyor. The workpieces W that have been sheared one after another are successively lowered and accumulated by the conveyor belt 81 of the return conveyor, and are detected by the detection sensor 105 when the accumulated height reaches a certain level. When the detection sensor 105 is activated, the conveyor belt 81 of the return conveyor is raised and reversed, whereby the integrated work W is returned to the table 7 on the front side at a time, and the reworked or processed state is obtained. Since checking can be performed, productivity can be improved. The fixed height at which the detection sensor 105 is mounted is equal to or less than the vertical distance between the pressing surface of the plate presser 13 provided in the shearing machine 1 and the table 7 or the vertical distance between the upper blade 17 and the lower blade 9. Is preferably set to. The detection sensor 105 may be a proximity switch, or an optical displacement detection sensor may be used to detect the integrated upper surface. Further, other known means may be used. The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. [0042] As will be understood from the above description of such embodiments according to the present invention, according to the present invention, in shearing machine, shearing machined workpiece return conveyor is integrated are sequentially lowered one after the other When the height accumulated together with the height becomes a certain height, it is detected by the detection sensor. When the detection sensor operates, the return conveyor is raised and reversed, so that the integrated work can be returned to the table on the front side at a time and reworking or checking of the processing state can be performed.
Productivity can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged side view of a front end side of a support conveyor of a shearing machine according to an embodiment of the present invention. FIG. 2 is a flowchart illustrating an operation when a sheared workpiece is accumulated on a conveyor belt. FIG. 3 is a side view in which a support conveyor is provided behind a shearing machine according to an embodiment of the present invention. FIG. 4 is a side view of the support conveyor in FIG. FIG. 5 is a plan view of a support conveyor. FIG. 6 is a rear view of the support conveyor. FIG. 7 is a side view showing a shearing machine and a support conveyor. FIG. 8 is an explanatory diagram of an operation on a front end side of the support conveyor. [Description of Signs] 1 Shearing machine 7 Table 9 Lower blade 13 Plate holder 17 Upper blade 19 Shooter 27 Back gauge 31 Support conveyor 35 Base frame 41 Base frame hanging part 47 Conveyor frame 49 Conveyor frame hanging part 51 First link 53 No. 2 link 57 Conveyor vertical cylinder (first driving means) 61 Base frame hanging part swing cylinder (second driving means) 77 Conveyor driving pulley 79 Conveyor driven pulley 81 Conveyor belt 105 Detection sensor

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B23D 33/00-33/02 B65G 21/12 B65G 21/14

Claims (1)

(57) [Claims] [Claim 1] Lower blade provided in a shearing machine (1)
Of the base frame (35) arranged at the lower rear part of (9)
On the front side, the base frame is suspended via the swing shaft (43).
The lower part of the installation part (41) is pivotally supported to be movable back and forth,
The front end side is pinned (55) to the base frame hanging part (41).
Upper and lower parallel links (51,5)
3) Conveyor frame via pin (55) on the rear end side
A hanging part (49) is provided pivotally, and the conveyor frame is provided.
Conveyor frame with rear end integrated with hanging part (49)
(47) is cut by the shearing machine (1).
It supports the cut work (W) and can be transported in the front-rear direction.
A conveyor belt (81) is provided so as to be rotatable forward and reverse.
The work accumulated on the conveyor belt (81) is constant
A detection sensor (105) for detecting that the
And moving the conveyor frame (47) up and down.
First driving means (57) for the
The second for swinging the frame hanging part (41) forward and backward.
Sharin characterized by comprising driving means (61)
Machine return conveyor.