JPH026687B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an apparatus for manufacturing side plates for packaging metal coils.

(Prior art) When packing metal coils, wrapping paper such as rust-proof paper or moisture-proof paper, and interior materials such as plastic sheets are wrapped, and to prevent the interior materials from tearing, an exterior iron plate is applied from the outside and the ends of the coils are wrapped. The hollow side plate corresponding to the inner hole of the coil is placed against it and bound with a band.

Conventionally, side plates have been manufactured by cutting out a long metal coil, but since the hollow portion corresponding to the inner hole of the coil is cut out from the coil, a decrease in yield cannot be avoided. Furthermore, as shown in Fig. 4, the end plates 1, 2, 3, and 4 are bonded to the substrate 5 in an attempt to improve the yield, but this requires some ingenuity in board cutting and is not suitable for complete automation. It is. Diagonal lines in the figure indicate cut surfaces.

Recently, packaging work has been automated due to the trend toward larger unit weights of coils and the need for labor-saving work.
This requirement is also strong in the production of side panels.

(Problems to be Solved by the Invention) The present invention provides a side plate manufacturing apparatus suitable for automation in which a trapezoidal plate is cut out from a strip coil to obtain a polygonal blank plate, and product side plates are produced.

(Means for Solving the Problems) The present invention provides a coil pedestal provided with a coil axis a and a variable angle cutter in the coil extraction flow path,
A conveyance table is arranged in parallel with the coil axis a, a positioning table is rotatably provided on the downstream side, a fixed shaft is set upright between the conveying table and the positioning table, and the fixed shaft is rotatably mounted on the fixed shaft. A metal coil characterized in that a transfer machine is provided, a suction device is provided on the transfer machine, and a seam welding machine and a trimming machine that are oriented toward the center of a positioning table are provided so as to be slidable in the direction of the positioning table. This is a manufacturing device for packaging side plates.

The present invention will be explained below with reference to the drawings.

In FIG. 1a, a trapezoidal plate 10 is cut out from a coil having a width W, for example, and the coil width W is used as the height of the trapezoidal plate. Also, the central angle θ of the trapezoidal plate is
For example, when six trapezoidal plates are planned, the central angle θ=60°.

The trapezoidal plates 10-1 to 10-6 are welded 11 in a circular shape to obtain an n-gon blank plate, as shown in FIG. The inner periphery 13 and outer periphery 12 of the blank plate are trimmed to obtain a side plate with a desired diameter t (FIG. 3(c)).

FIG. 2 is a plan view of the device of the invention.

The present invention is directed to a coil holder 2 provided with a coil axis a.
0-1 and 20-2 are provided, and can be raised and lowered in the vertical direction. A cutter 21 whose angle is variable is provided in the coil extraction flow path. The variable angle is selected to be ±θ/2 from a line parallel to the coil axis a.

A conveying table 22 is provided parallel to the coil axis a in the conveying direction of the trapezoidal plate 10 cut out from the coil. The transport table 22 is provided with an arbitrary transport means. A positioning table 24 is provided downstream of the transport table 22, and is designed to be freely rotatable so as to rotate by an angle θ. Also, conveyance table 2
2 and the axis b of the positioning table 24 are provided on the same line, and the transfer device 23 is provided with a desired turning angle.

As illustrated in FIG. 3, the transfer machine 23 is provided on a fixed shaft 30 and has a movable shaft 33 capable of vertical movement (arrow 31) and rotation (arrow 32). Arm 35 capable of advancing (arrow 34)
The distal end of the arm 35 has a plurality of suction pads 36 at the lower end, and a suction device 38 that can freely rotate (arrow 37).

Therefore, the transfer device 23 is used to suction and transfer the trapezoidal plate by the suction pad, and also has a mechanism for rotating the trapezoidal plate by 180 degrees.

A seam welding machine 25 and a trimming machine 26 are arranged facing the center of the positioning table 24. The welding head of the seam welder 25 is movable to the center position of the positioning table 24. Further, the trimming machine 26 is set so that the inner and outer peripheries of the formed polygonal blank plate form side plates having a predetermined diameter. Figure 2 shows a coil holder 20-1,
Although an example in which the side plates 20-2 are provided in parallel has been shown, a plurality of side plates may be provided depending on the type of side plate, and the number is not particularly limited.

The structure of the present invention is as described above. According to the present invention, the coil positioned on the coil holder 20 is pulled out to a required length and cut by the cutter 21 whose angle is variable. For example, trapezoidal plate 10
When six pieces are planned, the center angle of the trapezoidal plate 10 ±
The angle of the cutter is set so as to obtain θ/2=±30°, and a swinging motion is performed between cutting the leading end and cutting the trailing end to cut out a trapezoidal plate. Therefore, every other trapezoidal plate is 10-7, 10-8, 1
As shown in 0-9, the direction of the short side and long side are switched and cut.

When the desired trapezoidal plate 10 is obtained, it is transferred to the transport table 22, further caught by the suction pad of the transfer device 23, and placed on the positioning table 24. At this time, the trapezoidal plate 10-7 is placed on the positioning table as it is cut out, but the trapezoidal plate 10-8 is rotated by 180 degrees by the trapezoidal plate rotation function provided at the tip of the transfer device 23. placed on the positioning table.

In the positioning table 24, six trapezoidal plates 10
are arranged one after another to obtain a hexagonal blank plate, and then the trapezoidal plate 10 is welded to an adjacent trapezoidal plate by a seam welder 25.

The hexagonal blank plate obtained by welding in this way has 6
Since a rectangular hollow hole is formed, the inner and outer peripheries are trimmed by a trimming machine 26 to obtain a side plate having a desired diameter.

(Example) Cut 6 trapezoidal plates with a center angle of 60° from a metal coil with a width of 650mm, arrange them in a hexagonal shape, give an overlap of 50mm, and seam weld each overlap to produce a hexagonal blank plate. did. The side panels were trimmed to an inner diameter of 20 inches and an outer diameter of 1800 mm, and the production yield was 85%.

According to the conventional method of cutting the coil into a rectangular shape, joining end plates to the four sides, and cutting out the side plates, the yield was 50%.

(Effects of the Invention) The present invention obtains side plates by cutting out a trapezoidal plate whose height is equal to the coil width to obtain a polygonal blank and trimming the inner and outer peripheries, so it is possible to automate the production of side plates. Since only the amount of trimming is used as chips to obtain the side plate, high-yield production is possible, which has great industrial effects.

[Brief explanation of drawings]

Figures 1 a, b, and c are explanatory diagrams of the steps of the present invention, Figure 2 is a plan view of the manufacturing apparatus of the present invention, Figure 3 is a perspective view illustrating the transfer machine of the present invention, and Figure 4 is FIG. 2 is an explanatory diagram of a conventional method. 20; Coil holder, 21; Variable cutter, 2
2; Transport table, 24; Positioning table, 2
5; seam welding machine, 26; trimming machine.

Claims (1)

[Claims] 1. A coil holder provided with a coil axis a, a variable angle cutter in the coil extraction flow path, a conveyance table arranged parallel to the coil axis a, a positioning table rotatably provided on the downstream side, and a conveyance table A seam welding machine has a fixed shaft erected between the positioning table and the positioning table, a transfer device that can rotate and move up and down is installed on the fixed shaft, a suction device is installed on the transfer device, and the seam welding machine is oriented toward the center of the positioning table. A manufacturing device for a metal coil packaging side plate, characterized in that a trimming machine and a trimming machine are provided slidably in the direction of a positioning table.