JP3406414B2 - Shearing machine support conveyor - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shearing machine for supporting a work when shearing the work with a shearing machine and conveying the sheared work after the shearing. Regarding the machine support conveyor. 2. Description of the Related Art Conventionally, a support conveyer that supports a work when performing shearing on the work with a shearing machine and conveys the sheared work after the shearing is disposed behind a lower blade in the shearing machine. ing. In the support conveyor of this shearing machine, when the work is supported as soon as possible by the lower blade, or when the conveyor is reversed and the work is returned to the front, the supporting surface of the conveyor should be as short as possible to the lower blade. Work and the like are particularly desired. However, for example, as shown in FIG. 8, a table 103 is provided on an upper portion of a lower frame 101 of the shearing machine, and a lower blade 105 is provided on a rear end of the table 103. Behind the lower blade 105, a support conveyor 107 is provided.
7 is a conveyor belt 10 wound around a driven pulley 107 on the lower blade 105 side and a pulley (not shown) on the other side.
9 is provided. Further, there is a distance A at which the work is not supported with respect to the radius R of the driven pulley 107. [0004] As another requirement, when a workpiece is abutted against a back gauge, for example, as disclosed in Japanese Utility Model Laid-Open No. 1-71021, the workpiece is prevented from slipping between the back gauge and the conveyor. By forming irregularities on the lower surface of the back gauge and making the conveyor belt thicker, also forming irregularities on the upper surface of the belt, and engaging the lower surface of the back cage with the upper surface of the belt, the work is connected to the lower surface of the back gauge and the conveyor belt. Sliding between upper surfaces was prevented. [0005] Among the above-mentioned conventional techniques, the support conveyor shown in FIG. 8 has a distance A where the workpiece is not supported with respect to the radius R of the driven pulley 107. It is desirable that the diameter of the driven pulley 107 is as small as possible. More specifically, it is better that the conveyor belt 109 around the driven pulley 107 is thinner, but this is very difficult. In addition, in the support conveyors known in the above publications, the belt itself needs a thickness in order to form irregularities on the lower surface of the belt in order to prevent slippage, and this thickness directly leads to an increase in the diameter near the tip pulley. However, there is a problem that the work support and the work to be returned are limited. SUMMARY OF THE INVENTION It is an object of the present invention to provide a support conveyor for a shearing machine which prevents an increase in diameter near a tip pulley provided immediately after a lower blade and prevents a work from slipping between a back gauge and a conveyor belt. To provide. In order to achieve the above object, a support conveyor for a shearing machine according to the present invention according to the first aspect of the present invention provides a support conveyor for a shearing machine provided with a back gauge having a lower surface having irregularities. A support conveyor of a shearing machine provided in the above, wherein the support conveyor comprises a belt wound around a driving pulley and a driven pulley, and is provided between the driving pulley and the driven pulley to guide the belt from below. The belt guide surface is formed so as to form irregularities so as to mesh with the irregularities of the back gauge, and when the back gauge is used, the belt is arranged between the irregularities of the belt guide and the irregularities of the back gauge. It is a feature. According to the support conveyor of the shearing machine according to the first aspect of the present invention, irregularities are formed on the lower surface of the back gauge, and between the driving pulley and the driven pulley to guide the belt of the support conveyor. The belt is provided so that the guide surface of the belt guide is provided with unevenness, and the unevenness of the belt guide surface and the unevenness of the lower surface of the back gauge are meshed with each other. Since the diameter of the portion is prevented from increasing, the work supporting surface can be made closer to the lower blade, which is advantageous for supporting the work and returning the work. Also,
The work is prevented from slipping between the back gauge and the belt of the support conveyor, and the work is accurately abutted. Embodiments 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. 6, 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. 6) 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, so that the back gauge 27 is moved back and forth. Therefore, the back gauge 27 is positioned under the shear length of the workpiece to be sheared, and the rear end of the workpiece is abutted against the abutting portion 29. The work is sheared by the cooperation of the lower blade 9 and 17. When the work is cut, the work clamp 13 is lowered and the reverse work plate is used together, so that the work can be pressed from above and below, so that shearing with good machining accuracy can be 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. 2, 3 and 4
Referring also to FIG. 5, a traveling rail 33 is laid on the floor so as to extend in the front-rear direction. The traveling rail 33 is rotatably mounted on the lower part 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. 2,
3 and 5, a base frame vertical portion 41 is provided so as to be movable back and forth. That is, FIG.
As shown in FIG. 3 and FIG. 3, a 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. 2,
Base frame rising portions 45 are integrally provided on the left and right sides (right portion in FIG. 3). 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. 2 and 3) of the conveyor frame 47. Have been. A plurality of first links 51 and second links 53 are connected to the conveyor frame hanging portion 49 and the base frame hanging portion 41 at appropriate intervals in the vertical direction by pins 55, respectively. A plurality of conveyor vertical cylinders 5 as first driving means are provided on the base frame 35.
7 is attached, and the tip of a piston rod 59 attached to the conveyor vertical cylinder 57 is fixed to the conveyor frame 47. 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 of 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 through 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 position C 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. 2, an alignment plate 87 and a piler 89 for arranging the sheared workpieces in an aligned manner are movably provided at the upper right end of the base frame rising portion 45. The piler 89 is vertically movable.
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
7, the tip of the conveyor, that is, the driven pulley 79 for the conveyor is approached until immediately after the lower blade 9 or a reverse plate press (not shown) immediately behind the lower blade 9 and when the conveyor frame 47 is lowered. That is, 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 a conveyor driving pulley 77, a conveyor driven pulley 79 and a conveyor belt 81 is horizontally moved by the operation of the conveyor vertical cylinder 57, so that the back gauge 2
Since the work supporting portion can be supported by the conveyor without worrying about the interference with the workpiece 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, Can be pushed backwards,
A scrap discharge space is formed between the tip of the driven follower pulley 79 and the lower blade 9 and the like. Therefore, the scrap can be easily discharged from this 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, the belt guide 99 is provided with protrusions 99T at appropriate intervals in the left-right direction so as to form an uneven surface on the receiving plate 107. On the lower surface of the back gauge 27, convex portions 27T are formed at appropriate intervals so as to be uneven. In addition, the convex portion 99T of the belt guide 99 and the convex portion 2 of the back gauge 27
7T are alternately arranged. That is, the belt guide 99
Is located in the recess of the back gauge 27, and the projection 27T of the back gauge 27 is located in the recess of the belt guide 99. Conveyor belt 8
1 was arranged. With the above configuration, it is possible to prevent the diameter of the driven pulley 79 for the conveyor provided immediately after the lower blade 9 from being increased, which is advantageous in supporting the work and returning the work. The work can be prevented from slipping between the belt 81 and the conveyor. The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes. As will be understood from the above description of the embodiment, according to the first aspect of the present invention, it is possible to form irregularities on the lower surface of the back gauge and guide the belt of the support conveyor. The belt guide surface provided between the driving pulley and the driven pulley has irregularities formed on the guide surface, and the belt is arranged so as to mesh with the irregularities on the belt guide surface and the irregularities on the lower surface of the back gauge. Diameter can be prevented, which is advantageous for work support and work return. In addition, the work can be prevented from slipping between the back gauge and the belt of the support conveyor, and the work can be accurately abutted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged front view showing a relationship between a lower surface of a back gauge of a shearing machine embodying the present invention and an upper surface of a belt guide of a support conveyor. FIG. 2 is a side view in which a support conveyor is provided behind a shearing machine according to an embodiment of the present invention. FIG. 3 is a side view of the support conveyor in FIG. FIG. 4 is a plan view of a support conveyor. FIG. 5 is a rear view of the support conveyor. FIG. 6 is a side view showing a shearing machine and a support conveyor. FIG. 7 is an explanatory diagram of an operation on a front end side of the support conveyor. FIG. 8 is an enlarged side view of a front end side of a conventional 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

Claims (1)

(57) [Claim 1] A support conveyor of a shearing machine provided behind a lower blade in a shearing machine provided with a back gauge having an uneven lower surface, wherein the support conveyor has a driving pulley. And a belt wound around a driven pulley, and a belt guide surface provided between the driving pulley and the driven pulley for guiding the belt from below is formed with irregularities so as to mesh with irregularities of the back gauge. A support conveyor for a shearing machine, wherein the belt is arranged between the unevenness of the belt guide and the unevenness of the back gauge when the back gauge is used.