JPS6312896Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a side cutter that straddles the joints of continuously supplied strips and cuts the side edges of the strips in an arc shape using upper and lower disc-shaped round blades.

In order to efficiently and continuously process strips in continuous strip processing lines such as pickling lines, cold rolling lines, annealing lines, etc., welding is used to weld the rear end of the leading strip and the tip of the trailing strip at the entrance side of the line. connected, and the strip is passed seamlessly through the processing line. As described above, the thickness and width of the strips supplied to the processing line are not always constant, and strips of various sizes are processed according to the production plan. For example, if the trailing strip is wider than the leading strip in terms of board width, the corners that protrude from the side edges at the joints will collide with guides and other equipment while traveling through the processing line, causing the strip joints to break. or damage some parts of the machinery and equipment. In addition, the welding condition of the strip connection is unstable at both ends, resulting in unstable welding at the beginning and end of welding, which tends to cause the connection to break. In order to prevent this problem from occurring, conventionally a side clipping shear is installed at the entrance of the continuous processing line, as shown in the next drawing, to straddle the joints of the strips and round the side edges. Arc-shaped resection is performed. FIG. 1 is a side sectional view showing the main parts of a conventional side clipping shear, and FIG. 2 is a plan view showing an example of the connecting portion of connected strips.
Figure 3 is an explanatory plan view showing the positional relationship between the die and punch of the side clipping shear and the strip when cutting the side edge across the connection part of the strip, and Figure 4 is the cutting of the side edge of the strip. It is a top view showing a state. As shown in Fig. 1, the main parts of the side clipping shear A are a punch D having an arc-shaped blade portion attached to a punch holder C driven by a hydraulic cylinder B, and a die E.
A hydraulic cylinder B and a die E are fixed to a frame F. The connection G _a of the connected strip G shown in Figure 2 is a narrow strip.
The tip of a wide strip G'' is connected to the rear end of G'.
To cut the side edge part across the connecting part G _a with the side clipping shear A, run the strip G between the die E and the punch D as shown in Fig. 1, so that the connecting part G _a As shown in Figure 3, the strip G is stopped running at a position that coincides with the center of the die E and the punch D, and the hydraulic cylinder B is activated to lower the punch D through the punch holder C so that the strip G is inserted between the die E and the die E. Cut out the side edges of the strip G in an arc shape by holding them in place. Connect this
By performing this on both ends of G _a , a strip G with both side edges cut off can be obtained across the connecting portion G _a as shown in FIG. However, the conventionally used side clipping shear A as mentioned above
In order to increase the cutting length, not only the punch D but also the punch holder C and die E must be lengthened accordingly, and the cutting force will also increase, so all mechanical parts such as the frame F and hydraulic cylinder B must be made larger. It was hot. Therefore, equipment costs are high, and the consumable parts such as punch D and die E are large and can be as long as 1 meter, which not only increases the price but also makes it difficult to replace the parts and requires a lot of effort to regrind the blade. Because it has an arcuate curved blade, it is difficult and requires a large amount of expense.

The object of the present invention is to provide an inexpensive side cutter that does not have the above-mentioned drawbacks, has good workability, does not require replacing parts depending on the cutting length, and has good workability. That is, the present invention is a side cutter for cutting the side edge in an arc across the connection between the rear end of a continuously supplied strip and the tip of the next strip, and the side cutter is rotatably supported. An arm is attached to the top of a vertical support such that it is movable in a direction perpendicular to the support, and the arm is provided with two parallel branch arms that branch upward and downward along the vertical plane, Relating to a side cutter characterized in that an upper blade and a lower blade each consisting of a disc-shaped round blade are rotatably attached to the tips of two vertically parallel blade shafts attached to the branch arm. It is something.

Hereinafter, the present invention will be explained in detail with reference to drawings showing one embodiment of the present invention.

FIG. 5 is a side view schematically showing the present invention, FIG. 6 is a plan view, and FIG. 7 is an enlarged view of section X in FIG.

In the drawing, reference numeral 1 denotes a side cutter, which is composed of a vertical support 2, an arm 3, upper and lower cutter shafts 4, an upper blade 5, and a lower blade 6. As shown in FIG. 5, the vertical support 2 is rotatably vertically supported by a bearing 21, and can be easily and powerfully rotated by power from a hydraulic cylinder, a geared motor, etc. (not shown). The arm 3 is attached to the upper part of the vertical column 2 so as to be movable in a direction perpendicular to the vertical column 2, and at the mounting part, a cylinder 2a fixed at right angles to the vertical column 2 is attached as shown in FIG.
The length of the arm 3 can be substantially adjusted by sliding the arm 3 and fixing it with a screw 22, and being movable in a direction perpendicular to the vertical support 2. This arm 3 is provided with two parallel branch arms 3a and 3b that are vertically branched along the vertical plane on the opposite side of the vertical support 2, and each of these two branch arms 3a and 3b has a blade shaft 4. are installed in parallel.
Attach a bearing 7 to the tip of each blade shaft 4,
An upper blade 5 consisting of a disc-shaped round blade is attached to this bearing 7.
and a lower blade 6 are each rotatably attached. As is generally done, the mounting positions of the upper blade 5 and the lower blade 6 are adjusted so that the blade portions are in contact with each other or slightly overlap each other as shown in FIGS. 5 and 6. In order to facilitate the adjustment of the lap between the upper blade 5 and the lower blade 6, in this example, the blade shaft 4 is rotatably inserted into the branch arm 3a of the arm 3, as shown in FIG. The tip of the cutter shaft 4 is formed with a cutter attachment portion 4a that is eccentric with respect to the axis of the cutter shaft 4, and the upper blade 5 is attached to this cutter attachment portion 4a. In this configuration, screw 3
1 and rotate and slide the blade shaft 4, the upper blade 5 will move up and down according to the blade mounting part 4a. By fixing the blade shaft 4 at an appropriate position with the screw 31, the lap and gap can be adjusted. is easy. Such a structure of the cutter shaft can be adopted for either one or both of the upper and lower cutter shafts 4.

By means of the side cutter according to the present invention configured as described above, the connecting portion G _a of the connected strip G is
To cut the side edge across the strip, rotate the vertical support 2, move the upper blade 5 and lower blade 6 to the position shown by the broken line in Figure 6, and run the strip G to cut the connecting part.
After stopping G _a at a predetermined position closest to the vertical support 2, if the vertical support 2 is rotated, the upper blade 5 and the lower blade 6 will rotate on the upper and lower surfaces of the strip G, respectively, as shown in FIG. While cutting, the side edge of the strip G is cut in an arc shape along the circular locus of radius R shown in FIG. 6, straddling the connecting portion _Ga . If it is desired to lengthen the resection length, this can be easily done by sliding the base of the arm 3 onto the cylinder 2a of the vertical support 2 and pulling it out to lengthen the radius R.

The present invention has the following effects.

(i) Since the cutter is a disc-shaped round blade, the load during cutting is extremely small, allowing the machine to be lighter (almost a fraction of the weight) and equipment to be inexpensive.

(ii) By adjusting the length of the arm, it is possible to perform resection according to the size of the part that needs to be resected. In other words, it is possible to remove the minimum necessary amount, and when the area to be removed is large, it can be done in one operation instead of the one that required two operations in the past, increasing the efficiency of the removal operation. It will be planned.

(iii) The blade is smaller than the conventional punch-die method; for example, even if a blade of 1,000mm in length was conventionally required, a disc-shaped round blade of approximately 150 to 200mmφ, depending on the plate thickness, can be used. This makes the blade extremely lightweight, making it easy to replace, and also reducing the price of the blade.

(iv) The shape of the cutter has changed from a half-moon shape to a disk shape, which eliminates the need for special curved blades ranging from large to small as in the past, making regrinding work easier and reducing the gap and gap of the cutter. It becomes easy to adjust.

(v) The driving part of the equipment is vertically sliding motion in the conventional punch-die system, but in the present invention, the arm rotates, which is extremely advantageous in terms of manufacturing and maintenance of the machine. .

As described above, the side cutter according to the present invention has a structure in which the upper and lower blades, which are made of rotatable disc-shaped round blades, are attached to the tip of the length-adjustable arm that rotates with the rotating column. It is industrially valuable because of its effects such as free adjustment, lightening of equipment, and cost savings.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view showing the main parts of a conventional side clipping shear, Fig. 2 is a plan view showing an example of the connecting part of the connected strips, and Fig. 3 is a side sectional view showing the main parts of the conventional side clipping shear. A fourth explanatory plan view showing the positional relationship between the die and punch of the side clipping shear and the strip when cutting the edge.
The figure is a plan view showing the removed state of the side edge of the strip, Figure 5 is a side view showing the outline of the present invention, Figure 6 is a plan view as well, and Figure 7 is an enlarged view of the X part in Figure 5. It is. 1...Side cutter, 2...Vertical support, 2a...
...Cylinder, 21...Bearing, 22...Screw, 3...Arm, 3a...Branch arm, 3b...Branch arm, 31...Screw, 4...Cutter shaft, 4a...Cutter mounting part, 5... ...Upper blade, 6...Lower blade, 7...Bearing, R...Radius.

Claims (1)

[Scope of utility model registration request] A side cutter for cutting the side edge in an arc across the connection between the rear end of a continuously supplied strip and the tip of the next strip, and the upper part of a vertical support that is rotatably supported. An arm is attached to the column so as to be movable in a direction perpendicular to the column, and the arm is provided with two parallel branch arms that branch upward and downward along a vertical plane, and the arm is attached to the branch arm. A side cutter characterized in that an upper blade and a lower blade each consisting of a disc-shaped round blade are rotatably attached to the tips of two vertically parallel blade shafts.