JPH0134897B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a method for loading and counting various types of long steel bars (hereinafter simply referred to as long steel bars), such as unstraightened steel bars and different lengths (hereinafter simply referred to as long steel bars), which are continuously conveyed by a chain conveyor with multiple strips. This invention relates to a device that automatically separates the materials for such purposes.

Hot rolled steel strips bend or warp during the cooling process, and are transported continuously on a chain conveyor. It must be separated and sent intermittently. For this reason, when continuously conveyed long steel bars are stopped on a chain conveyor, the long steel bars overlap or different lengths of steel bars are also conveyed, making it difficult to separate them reliably. This overlapping and separation is done manually, which is very complicated and troublesome, and requires a lot of labor and fatigue on the part of the workers.

The present invention aims to eliminate such drawbacks by making one strip on one side of a multi-strip chain conveyor higher than the level of the other chain conveyor, and preventing the bar from overlapping horizontally above the upper step conveyor. In addition to installing the plate, a cutting device is provided with bar stoppers for restraining or releasing the bar bar at several locations on the upper step conveyor and the lower conveyor, respectively, and positioning stoppers that can freely change and adjust the distance (interval) from the stopper. By installing an upper separator and a lower separator consisting of an upper separator and a lower separator, and controlling the operation (upward and downward movement) of the two stoppers and cut-out device, it is possible to load the transported bar into the straightening machine. It is capable of feeding in fixed pitches or one by one for counting, and can automatically separate continuously conveyed bars by one or a set number of bars accurately and in a short time. An embodiment of the present invention will be described below based on the drawings.

1 is a chain conveyor with multiple strips installed in parallel to convey hot-rolled steel bars 2;
A so-called upper step conveyor 1a in which the level of the strips near the center is higher than that of other chain conveyors;
It is constructed of lower conveyors 1b, 1b, .
1 and 2 by each sprocket 6 on the same drive shaft 5 which is driven from the motor 4 via 3'...
It is installed so that it can be operated continuously in the direction of the arrow in the figure.

Reference numeral 7 denotes an upper separation device installed at a local position of the upper step conveyor 1a, which is attached to a frame 8 via several adjustment bolts 9 and springs 10 along the upper side before reaching the inclined descending section 3 of the step conveyor 1a. An overlapping prevention plate 11 made of long steel in the shape of a sled that can be adjusted up and down and supported elastically, and a pivot 1 in the middle of the pedestal 8.
Hydraulic cylinder or air cylinder 1 equipped with an arm 13 pivoted at 2 and installed on a pedestal 8
an upper stopper 16 which is connected to the piston of No. 4 so as to be able to freely pivot upward and downward, and which is installed at the tip of the arm so as to be able to descend and rise relative to the conveyor surface;
An arm 19 is provided at the lower side of the step conveyor 1a via a frame 17, and the arm 19 is pivotally supported at the center by a pivot 18, and the lower end of the arm 19 is connected to a piston of a hydraulic cylinder or an air cylinder 20, and A positioning stopper 21 protruding from the step conveyor is attached to the positioning stopper 21 so as to be movable and adjustable along the step conveyor direction using an adjustment bolt 22 so that the distance between the stopper 21 and the stopper 16 can be adjusted. It is constructed by an upper cutting device 23 that protrudes from the upper surface of 1a and is retractable.

Reference numeral 24 denotes a lower separating device located on the side of the upper separating device 7 and installed at a plurality of locations between the plurality of lower conveyors 1b. Bearing stand 25 provided
, two arms 27 and 28 pivoted by a pivot 26
A lower stopper 29 is provided on the tip of the arm 27 to move it upward and downward with respect to the conveyor surface, and a stopper 29 is provided on the upper surface of the arm 28.
The arms 27 and 28 are mounted on a support base 32 and a positioning stopper 31 that is movable and adjustable in the direction of the conveyor using adjustment bolts 30 so as to adjust the distance from the lower cutting device 36 to which the arms 27 and 28 are attached.
Hydraulic cylinder or air cylinder 33 installed in
The lower conveyor 1b is connected to the 34 pistons, respectively.
It appears on the top surface and is reversible.

37 is a roll gang for carrying out installed on the side of the inclined descending part of the chain conveyor 1, which is connected to the step conveyor 1a.
The bar conveyed by the lower conveyor 1b is conveyed from the inclined descending portions 3, 3' to the straightening machine 39 via the conveying rollers 38.

Reference numerals 35 and 35' indicate limit switches that are provided to respond to contact each time the bar passes through so that the bar to be sent to the straightening machine 39 or a predetermined position can be conveyed without interruption. The upper separator 7 and the lower separator 24 are operated in sequence.

Next, I will explain the operation of this invented device.
A bar 2 of a predetermined length is carried on the chain conveyor 1 in the direction of the arrow in FIG. 1. At the start of operation, the upper separating device 7 and the lower separating device 24 are set to the state shown in FIG. 5A. , the upper positioning stopper 21 and the lower positioning stopper 31 are replaced by the upper stopper 16 and the lower stopper 29, respectively.
Adjust the distance from the bar so that it is suitable for the size of the bar to be transported, and fix it to the arms 19 and 28 with adjustment bolts 22 and 30.

In this way, the bar 2 is supported and conveyed at two points: the step conveyor 1a, which is continuously operated by the drive shaft 5 from the motor 4, and one of the plurality of lower conveyors 1b, and is bent. The warped, overlapping, or crossed bar bars are brushed off and lined up on a flat surface when they pass under the elastically suspended overlap prevention plate 11, and are placed in one place suitable for the length of the upper separating device 7 and the bar bars. are continuously arranged on the chain conveyor 1 by the positioning stopper 21 of the upper cutting device 23 and the lower stopper 29 of the lower cutting device 36 in the lower separating device 24.

Next, the hydraulic cylinders or air cylinders 14 and 3
4 to lower and raise the upper stopper 16 and the lower positioning stopper 31 as shown in FIG. 5B.
The bar 2 is closed in the state shown in FIG. Then, by actuation of the hydraulic cylinders or air cylinders 20 and 33, the positioning stopper 21 of the upper cutting device 23 and the lower stopper 29 of the lower cutting device 36 are moved to the fifth position.
The separating bar 2 is moved downward to the state shown in FIG. It is transferred upward and fed into the straightening machine 39.

When the cutting of this long steel is completed, the upper positioning stopper 21 of the upper cutting device 23 and the lower stopper 29 of the lower cutting device 36 are moved to the position shown in FIG. 5D by the operation of the hydraulic cylinder or air cylinder 20, 33 again.
After that, the upper stopper 1 is moved by the operation of the hydraulic cylinder or air cylinder 14, 34.
6 and the lower positioning stopper 31 are respectively connected to the pivot 1.
2 and 26 as fulcrums to reach the state shown in FIG. 5E, the conveyed bar on the chain conveyor 1 is moved again and the upper cutting device returns to the same state as shown in FIG. 5A. The positioning stopper 21 of 23 and the lower stopper 29 of the lower cutting device 36 intermittently stop the subsequent bars on the conveyor in a state where they are lined up again. By sequentially operating the lower separation device 24, the bar is cut out one by one or intermittently by a set number of bars by adjusting the positions of the movably adjustable upper positioning stopper 21 and lower positioning stopper 31 according to the bar size. It can be carried out to the next process.

When conveying to the straightening machine 39, the bar passing over the unloading roll gang 37 is detected by a limit switch or appropriate detection devices 35, 35', thereby positioning the upper and lower separating devices 7, 24 for cutting. Hydraulic cylinder or air cylinder 20, 33 that operates the stopper 21 and the lower stopper 29
is operated to control the cutting timing of the bar steel, and the bar bar is continuously conveyed to the straightening machine 39 without interruption, thereby eliminating work loss.

As is clear from the above description, according to the apparatus of the present invention, unstraightened steel bars or bars of different lengths that are continuously conveyed by a chain conveyor of multiple strips can be loaded into a straightening machine, counted, etc. Therefore, one piece or a set number of pieces can be reliably and automatically separated in a short time, and the conventional manual labor of separating overlaps and separating can be automated and labor can be saved. In addition, the timing of automatic separation and cut-out conveyance can be easily adjusted using the operating cylinder.
Work efficiency can be significantly improved with less work loss.

In the embodiment of this invention, the case of angle-shaped steel is illustrated, but by changing each positioning stopper and stopper, the same effect can be achieved not only for groove-shaped steel, H-shaped steel, and round bars, but also for the size and separation of long steel. The set number for this can be adjusted very easily by adjusting the movement of the positioning stops in the upper and lower separating devices.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of the mechanism showing one embodiment of the device of the present invention, Fig. 2 is a side view of the schematic mechanism showing the main parts of the invention, and Fig. 3 is a side view of the upper separation device in the device of the present invention. Figure 4 is a side view of the lower separator, and figures A, B, C, D, and E in Figure 5 show the upper and lower separators in this device. FIG. 2 is a schematic explanatory diagram of a mechanism showing the corresponding operation order. 1...Chain conveyor, 2...Bar bar, 1a...
...Level conveyor, 1b...Lower conveyor, 7...
Upper separation device, 11... overlap prevention plate, 14, 2
0 and 33, 34...Each hydraulic cylinder or air cylinder, 16...Upper stopper, 21...Upper positioning stopper, 22...Adjustment bolt, 23
... Upper cutting device, 24 ... Lower separating device, 2
9... Lower stopper, 31... Lower positioning stopper, 36... Lower cutting device.

Claims (1)

[Claims] 1 One strip on one side of a multi-strip chain conveyor is installed at a higher level than the other chain conveyors so that the bar is conveyed at an angle in the length direction, and the bar is stacked above the conveyor surface, the height of which can be freely adjusted. At one location on the step conveyor where the prevention plate is installed and at multiple locations on the other lower conveyor, hydraulic cylinders or air cylinders are used to control the top and bottom of each conveyor surface.
an upper separating device consisting of an upper cutting device and an upper stopper having an upper positioning stopper whose interval can be freely adjusted according to the size of the long steel bar that moves downward and alternately restrains or releases the first long steel bar and a predetermined bar length;
A lower separating device consisting of a lower positioning stopper whose interval can be freely adjusted and a lower cutting device having a lower stopper is installed, and each stopper and cutting device of the lower separating device at one location suitable for the length of the upper separating device and the long steel are installed. An automatic separating device for long steel bars that are continuously conveyed by a chain conveyor, characterized in that the continuously conveyed long steel bars are separated and conveyed intermittently by one piece or by a set number of pieces by controlling the upper and lower operations.