JP3064169B2 - Spiral looper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spiral looper.

[0002]

2. Description of the Related Art A spiral looper is known as a looper for storing a strip in a continuous strip processing line such as a welded steel pipe production line. The spiral looper includes a number of vertical outer guide rolls along the outer peripheral line of the band storage area and a number of vertical inner guide rolls along the inner peripheral line, and the outer guide roll on the floor of the band storage area. It is configured to include a number of laterally placed outer winding rolls located closer to it and a number of horizontally placed inner winding rolls located closer to the inner guide roll.

In this spiral looper, an outer winding having a winding number No is stored in an outer winding-side roll while the strip is guided by an outer guide roll, and a strip connected to the outer winding is formed by an inner guide roll. The inner winding having the number of turns Ni is stored on the inner winding side roll while being guided, and the strip is spirally wound from the inner winding portion and can be taken out to a lower process.

Here, in the spiral looper,
The total value of the number of turns of the outer winding No and the number of turns of the inner winding Ni is always constant, and the circumferential length difference between the outer and inner windings is the storage amount.

[0005]

However, in the prior art, the exit section of the spiral looper (lower step)
When the emergency stop occurs, the inner winding coil in the looper continues to be unwound due to its inertia. FIG. 7 is a schematic view showing this state, wherein 1 is a band plate, 1A is an outer winding coil, 1B is an inner winding coil, 2 is an entrance zone, and 3 is an exit zone. And
In this case, the strip 1 between the inner winding coil 1B and the pinch roll 4 of the output side zone 3 may be slack, jump out to the periphery, or may collide with peripheral equipment such as a sensor to cause damage. is there.

An object of the present invention is to make it possible to restrict the free discharge of the inner winding coil from the looper and to stabilize the operation of the looper.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a plurality of vertical outer guide rolls along an outer peripheral line of a band storage area and a number of vertical inner guide rolls along an inner peripheral line, and a belt storage. It is equipped with a number of laterally placed outer winding rolls located near the outer guide roll and a number of horizontally placed inner winding rolls located near the inner guide roll on the floor of the area, and the strip is spirally formed from the inner winding part. In a spiral looper that can be wound and taken out to a lower process, a brake member can be pressed against an inner surface of an inner winding coil supported on an inner winding roll and forming a winding shape around an inner guide roll. It was made.

[0008]

When the inner coil is discharged from the looper while the inner coil is being discharged, the brake member is operated and the brake member is pressed against the inner surface of the inner coil, so that the inner coil is braked by the frictional force applied by the brake member. And the subsequent free discharge by inertia is prevented. Thus, the slack of the band on the looper exit side does not occur, and it is possible to prevent the band from jumping out to the periphery and to prevent damage due to collision with peripheral equipment such as a sensor.
That is, the operation of the looper can be stabilized, and the reliability and safety can be significantly improved.

[0009]

1 is a plan view showing a spiral looper to which the present invention is applied, FIG. 2 is a sectional view taken along the line II-II of FIG.
FIG. 3 is a schematic view showing a spiral looper winding form, FIG. 4 is a side view showing a main part of the spiral looper, FIG. 5 is a view taken along the line VV in FIG. 4, and FIG. 6 is a VI-VI line in FIG. It is an arrow view along.

As shown in FIGS. 1 and 2, the spiral looper 10 has a number of vertical outer guide rolls 12 along the outer peripheral line of the band plate storage area 11 and a number of vertical inner guide rolls 13 along the inner peripheral line. And
The spiral looper 10 has a number of laterally disposed outer winding rolls 14 located closer to the outer guide rolls 12 on the floor surface of the strip storage area 11 and a number of horizontally disposed inner winding sides located closer to the inner guide rolls 13. And a roll 15. The outer winding roll 14 is a drive roll, and is driven by a drive motor 16 controlled by an inverter.
The inner roll 15 is an idle roll. In the band storage area 11, a shoe 17 is disposed at a boundary between the outer roll 14 and the inner roll 15. In the strip storage area 11, a skew roll 18 is disposed between the adjacent outer rolls 14, 14.

The spiral looper 10 has an entry-side twist zone 21 on the entry side, and the strip 1 which is carried in horizontally is formed in a vertical shape, and the vertical strip 1 is used as a measuring roll 21B. While the length is measured in, the sheet is fed into the band plate storage area 11 by driving the entry pinch roll 21C.

The spiral looper 10 has an outlet twist zone 22 on the outlet side, and measures the length of the vertical strip 1 discharged from the strip storage area 11 by a measuring roll 22B. While being twisted 90 degrees, it is carried out to the lower process in a horizontal state.

[0013] In the spiral looper 10, and storage at ambient winding turns No the strip 1 coming sent from the entry side twist zone 21 the strip storage area 11 on the outer winding side roll 14, and the outer the strip 1 leading to the winding and storage at an inner winding turns Ni on Uchimaki side roll 15 while the guide at the inner guide roll 13, the strip 1
Is spirally wound from the inner winding portion and discharged to the outlet-side twist zone 22 (FIG. 3).

Here, in the spiral looper 10, the total value of the number of turns of the outer winding and the number of turns of the inner winding Ni is always constant, and the difference in circumference between the outer and inner windings is the storage amount.

However, in the spiral looper 10, the brake member 31 can be pressed against the inner surface of the inner winding coil supported on the inner winding roll 15 and forming a winding shape around the inner guide roll 13. Brake device 3 for
0 is provided.

In the brake device 30, an air cylinder 32 is fixedly installed in the looper 10, a brake member 31 is fixed to a tip end of a piston rod of the air cylinder 32, and the brake member 31 is connected to the inner guide roll 1 adjacent to the air guide.
The slide support is possible by the guide 33 installed between 3 and 13. That is, the brake device 30 presses the brake member 31, which is guided and advanced by the guide 33, against the inner surface of the inner winding coil by the extension operation of the air cylinder 32, and can apply a braking force based on a frictional force to the inner winding coil. And

The brake device 30 additionally includes control means for receiving an emergency stop signal on the exit side (lower step) of the spiral looper 10 and performing the above-described braking operation in conjunction with the emergency stop. ing.

The operation of this embodiment will be described below.
If the brake member 31 is actuated during the discharge of the inner coil from the looper 10 and the brake member 31 is pressed against the inner surface of the inner coil, the inner coil is driven by the frictional force applied by the brake member 31. It is braked and its subsequent free ejection by inertia is prevented. Thereby, the slack of the band plate 1 on the looper exit side does not occur, and the band plate 1 can be prevented from jumping out to the periphery, and can be prevented from colliding with peripheral equipment such as a sensor and causing damage. . That is, the operation of the looper 10 is stabilized,
Reliability and safety can be significantly improved.

Table 1 shows the operating conditions of the spiral looper 10 provided on the entry side of the forging mill and the effects of the present invention. According to Table 1, it was recognized that as a result of applying the braking action to the inner winding coil simultaneously with the emergency stop on the exit side of the looper 10 using the brake device 30, the slack of the strip 1 does not occur.

[0020]

[Table 1]

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention. For example, the brake member is not limited to fluid pressure such as air or oil, and may be driven by an electric motor or the like.

[0022]

As described above, according to the present invention, the free discharge of the inner winding coil from the looper can be restricted, and the operation of the looper can be stabilized.

[0023]

[Brief description of the drawings]

FIG. 1 is a plan view showing a spiral looper to which the present invention is applied.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a schematic diagram showing a winding shape by a spiral looper.

FIG. 4 is a side view showing a main part of the spiral looper.

FIG. 5 is a view along arrow VV in FIG. 4;

FIG. 6 is an arrow view along the line VI-VI in FIG. 5;

FIG. 7 is a schematic view showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strip 10 Spiral looper 11 Strip storage area 12 Outer guide roll 13 Inner guide roll 14 Outer roll 15 Inner roll 31 Brake member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-53656 (JP, A) JP-A-61-37651 (JP, A) JP-A-62-289323 (JP, A) (58) Field (Int. Cl. ⁷ , DB name) B21C 49/00 B21B 41/00

Claims (1)

(57) [Claims] The present invention comprises a plurality of vertical outer guide rolls along an outer peripheral line of a band storage area and a number of vertical inner guide rolls along an inner peripheral line, and an outer guide roll on the floor of the band storage area. Equipped with a number of laterally placed outer winding rolls located closer to the inner guide roll and a larger number of horizontally placed inner winding side rolls located closer to the inner guide roll. A spiral looper, wherein a brake member can be pressed against an inner surface of an inner winding coil supported on an inner winding roll and forming a winding shape around an inner guide roll.