JP4031586B2 - Strip direction change device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a traveling direction changing device for continuously supplying a strip-shaped material such as a steel plate or an aluminum thin plate from one processing line to another processing line in the next process.
[0002]
[Prior art]
When changing the direction of travel from one processing line to the next processing line and feeding a strip of steel sheet or aluminum thin plate, a device that changes the travel direction by moving the strip in a spiral direction on a cylindrical floater, Japanese Patent No. 2735934, Japanese Utility Model Laid-Open No. 4-127751, Japanese Patent Laid-Open No. 9-226999, etc. In the following, for convenience of explanation, these will be referred to as Conventional Examples 1, 2, and 3, respectively, in this order.
[0003]
All of these conventional apparatuses are provided with a large number of gas outlets in a spiral region of a curved surface of a semi-cylindrical or cylindrical floater, and gas is ejected, and the strip material is advanced in the spiral direction to the gas ejection portion. In the conventional example 3, an integrated edge mask that adjusts the area of the gas outlet ejected from the cylindrical floater is arranged outside or inside the cylindrical floater. Proposed devices have been proposed.
[0004]
However, in the case of the apparatus of Conventional Example 3, when the gas is uniformly ejected from the entire gas outlet of the cylindrical floater, a gas outlet is provided for the strip-like material that floats and moves spirally around the cylindrical floater. There is a problem in that the amount of gas ejection is insufficient at both ends of the traveling area, that is, at the entrance and exit from the cylindrical floater, and the belt-like material easily comes into contact with the cylindrical floater surface.
[0005]
With respect to this problem, in the conventional example 1, as shown in FIG. 6, a number of uniform circular gas jets 51 are provided in the spiral curved surface area of the cylindrical floater 50, and as shown in FIG. The inside of the cylindrical floater 50 is divided into a curved surface side section 53 and a tangential side section 54 by a partition wall 52, and both the sections 53 and 54 are connected to individual gas supply blowers by gas supply pipes 55 and 56, respectively. The apparatus of the structure which raises the levitation | floating force of an entrance part and an exit part by supplying the gas of the pressure higher than the curved surface side division 53 to the tangential side division 54 is disclosed.
[0006]
Further, in Conventional Example 2, as shown in FIG. 8, slit-shaped gas jets 61 having a large aperture ratio are provided at both ends of the spiral curved surface area of the cylindrical floater 50, that is, at the entrance and exit, and the spiral curved surface. A plurality of circular gas outlets 62 having a slightly lower opening ratio are provided in the middle part of the zone, so that a gas having a constant pressure supplied from one gas supply blower through the gas supply pipe 63 can be slit at the entrance and exit. The apparatus of the structure which raises the levitation | floating force of an entrance part and an exit part is disclosed by making the amount of gas ejection from the shape gas jet outlet 61 larger than that in the area of the jet outlet 62 of an intermediate part.
[0007]
[Problems to be solved by the invention]
However, in the apparatus disclosed in the conventional example 1, the weight of the cylindrical floater 50 increases due to the attachment of the internal partition wall 52, and internal work such as maintenance becomes difficult, and two series of gas supply blowers are required. For this reason, there is a problem that the equipment becomes large and costs are increased at the same time.
[0008]
In addition, the apparatus disclosed in Conventional Example 2 has a configuration in which a slit-shaped gas outlet 61 and a large number of circular gas outlets 62 are provided on the cylindrical floater 50 at a constant opening ratio per unit area. Increase / decrease adjustment of the gas ejection amount on the slit-type gas ejection port 61 side cannot be performed. For example, assuming a case where the strip material 57 processed on the line is operated by changing to another strip material having a different plate width and thickness, in order to cope with the changed strip material, Although it is necessary to adjust the gas ejection amount from the slit-type gas ejection port 61 at the entrance and exit, and to adjust the flying height at the entrance and exit, there is a problem that such adjustment cannot be performed in the apparatus of the conventional example 2. was there.
[0009]
This invention is made | formed in view of the said situation, The place made into the objective is providing the advancing direction change apparatus of the strip | belt-shaped material which can adjust the flying height of a strip | belt-shaped material with a simple structure.
[0010]
[Means for Solving the Problems]
The present invention takes the following means in order to solve the above problems.
That is, the travel direction changing device for a strip material according to claim 1 is a travel direction changing device for a strip material having a gas jet port within a spiral belt-like range of a strip-shaped material facing surface forming a curved surface of a cylindrical floater, Mask means for adjusting the gas outlet area of the gas outlet provided at the entrance and exit of the strip with respect to the spiral zone, and levitation for detecting the flying height of the strip with respect to the outer surface of the cylindrical floater Based on the value detected by the flying height detection means, the flying height of the band material at the intermediate portion of the spiral band range is greater than the amount of floating of the belt material at the amount detection means and the entry and exit portions. And a control means for adjusting the mask means.
[0011]
According to this, although it can be said that this apparatus has a relatively simple configuration substantially only including the mask means, the flying height detection means, and the control means, the belt-like material at the entrance and the exit is provided. It is possible to accurately control the flying height. That is, when it is determined by the detection value and control means of the flying height detection means that the flying height at the entrance and exit is smaller than the flying height at the middle part of the range of the spiral band material, the mask means Only by adjusting the area of the jet outlet, the amount of gas jetted at the entrance and exit is controlled, and as a result, it is possible to avoid a situation where the strip material contacts the cylindrical floater.
[0012]
According to a second aspect of the present invention, there is provided an apparatus for changing a traveling direction of a strip-shaped material, wherein the mask means is provided in an intermediate portion of the spiral strip-shaped range.
[0013]
According to this, if an appropriate set value is determined in advance for the flying height in the middle part of the spiral belt-shaped range, if the flying height is lower than this set value, a measure to increase this is set. It becomes possible to take. That is, in this case, it is possible to avoid contact between the belt-like material and the cylindrical floater even in the intermediate portion, and the flying height of the entrance portion and the exit portion will be larger than the set value. Thus, it is possible to make the progress of the stable band-like material in the entire spiral band-like range.
[0014]
According to a third aspect of the present invention, there is provided an apparatus for changing the direction of travel of a belt-like material, wherein the mask means is mounted inside or outside the cylindrical floater, and the flying height detecting means is provided along the outer surface of the cylindrical floater. [0015]
According to this, the adjustment of the gas jetting area by the mask means and the detection of the flying height by the flying height detection means can be more accurately performed. In particular, if the mask means is mounted on the inner surface of the cylindrical floater, the contact between the mask means and the belt-like material can be avoided in advance, and the reliability regarding the operation of the apparatus can be improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of a strip material traveling direction changing device according to an embodiment of the present invention, and FIG. 2 is an inner surface development view of the cylindrical floater of FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1, FIG. 4 is a side view of the flying height detector portion taken along arrow IV-IV in FIG. 3, and FIG. 5 is a flying height taken along arrow VV in FIG. It is a side view of a detector part.
[0017]
In FIG. 1, an ejected gas supply means 11 is connected to a cylindrical floater 10 by a single connecting pipe 12. On the circumferential surface of the cylindrical floater 10, a large number of circular gas jets 13 are provided in the middle of the spiral band-like material 17 traveling area (spiral belt-shaped range). A slit-type gas jet port 14 is provided at the entrance and exit of the. In addition, a plurality of (four in FIG. 4) flying height detectors (flying heights) are provided at intervals in the axial direction of the cylindrical floater 10 on the outside of the entrance portion, the exit portion, and the central portion of the belt 17 traveling area. Detection means) 15 is provided, and a control device (control means) 16 is connected to these. The terms “intermediate part” and “central part” introduced above are used with the following definitions. That is, the “intermediate portion” is a term that indicates the entire region between the entrance portion and the exit portion of the strip member 17 in the traveling region of the strip member 17 and is sandwiched between both, and the “central portion” is the “intermediate portion”. This is a term that indicates a point or region that is equidistant when viewed from the entrance and exit.
[0018]
As shown in FIGS. 4 and 5, the flying height detector 15 has a cylindrical floater that is spaced from the outer surface of the cylindrical floater 10 at each of the entrance, exit, and center positions of the belt 17 traveling area. 10 are provided at predetermined intervals on a support beam 18 provided along the surface of the cylindrical floater 10 with the outer surface or the outer structure of the support 10 as support points. In addition, two flying height detectors 15 are provided on each support beam 18 so that the position of the flying height detector 15 can be adjusted in the length direction, and the position can be adjusted according to the plate width of the belt-like material 17. Yes. For example, an ultrasonic distance sensor can be used as the flying height detector 15.
[0019]
In the inner surface 10 ′ of the cylindrical floater 10 shown in FIG. 2, as shown by reference numerals 10 a, 10 b, and 10 c in the figure, the inner surface 10 for clarifying the positional relationship of each device described below. 'A quadrant with respect to the circumferential direction is virtually introduced. On the inner surface 10 'of the cylindrical floater, a plurality of reinforcing members 20 are arranged in parallel in the axial direction at equal intervals in the circumferential direction between the equal lines 10a and 10c and around the equal line 10b (four in the figure). ) Is provided. The large number of circular gas jets 13 are provided in the space between the reinforcing members 20 and in the traveling area of the spiral belt-like member 17, and the inlet and outlet slit gas jets 14 described above are arranged outside the reinforcing member 20. Are provided in the progress region of the strip 17 on the equipartition lines 10a and 10c.
[0020]
A plurality of sets (three sets per side in the figure) for the circular gas jet nozzle 13 area, which can be moved forward and backward by sliding with respect to the band 17 traveling area, are provided on both sides of the band 17 traveling area. Mask means 21 is provided. The advancement / retraction of the mask means 21 is realized by driving cylinders 22 provided in the intervals of the reinforcing member 20. Further, a mask means 23 for the slit type gas outlet 14 is provided in the same form as the mask means 21. The forward / backward movement of the mask means 23 is realized by driving a cylinder 24 provided outside the reinforcing member 20. The cylinders 22 and 24 corresponding to the mask means 21 and 23 are connected to the control device 16. In FIG. 2, a simplified illustration is shown with only the cylinder 24 of the mask means 23 for the slit-type gas outlet 14 being connected to the control device 16.
[0021]
In FIG. 3, the mask means 21 for the area of the circular gas jet 13 is movable in the length direction via a roller or the like along a fixed track 25 which is arranged in parallel with the cylindrical floater inner surface 10 'at a distance. It is supported by the provided frame 26 so that the gas outlet area of the circular gas outlet 13 can be adjusted by the synchronous drive of the cylinder 22.
[0022]
Further, the mask means 23 of the slit-shaped jet nozzle 14 part is opposed to the reinforcing material 20 outside the area of the circular gas jet nozzle 13 and the other reinforcing material 27 opposed across the slit-shaped gas jet nozzle 14 part. The gas jet nozzle area of the slit-type gas jet nozzle 14 is adjusted by the synchronous driving of the cylinder 24 supported by a frame 29 that is movable along the length of the guide rail 28 in the length direction via a roller or the like. I can do it.
[0023]
The flying height detector 15 of the strip 17 is opposed to the jet gas at a position outside the strip 17 facing the slit-shaped gas jet 14 at the entrance and exit, and at the center of the circular gas jet 13 area. In the outer position of the strip-shaped material 17 to be provided, a certain distance from the outer peripheral surface of the cylindrical floater 10 is maintained. A specific form regarding this has already been described.
[0024]
Below, the effect | action and effect regarding the advancing direction change apparatus 1 of the strip | belt-shaped material which become the said structure are demonstrated.
When the belt-like material 17 advances in a spiral direction around the cylindrical floater 10 from the entrance and exits from the exit after changing the direction of travel at a certain angle, the flying height detectors 15 at the entrance, center, and exit are respectively At the position, the flying height from the outer peripheral surface of the cylindrical floater 10 is detected and transmitted to the control device 16.
[0025]
Based on the detection value of each flying height detector 15, the control device 16 preferably sets the latter flying height so that the flying height of the belt-like material 17 at the entrance and exit positions is larger than the flying height of the central portion. The opening and closing of the mask means 23 for the slit-shaped gas outlet 14 is adjusted so as to be 110% or more of the detected floating amount of the gas, and the area of the gas outlet at the outlet 14, that is, the slit in the axial direction of the cylindrical floater 10. Controls the gas ejection length. At this time, when the floating amount of the belt-like material 17 in the central portion is smaller than the set floating amount, the control device 16 sets the gas supply amount of the gas supply device 11 so as to increase the central floating amount to the set floating amount. It is possible to execute the above-described automatic floating amount control at the entrance and exit after performing automatic control.
[0026]
In the traveling direction changing device for the strip material 17 in this form, the flying height of the entrance portion and the exit portion is maintained at 110% or more of the floating height of the central portion, so that the strip material 17 and the cylindrical floater 10 at the entrance portion and the exit portion are maintained. Sufficiently safe driving can be performed so that contact with the outer surface cannot occur. Further, according to the above, since the flying height in the central part or the intermediate part can be appropriately controlled, the contact between the strip 17 and the outer surface of the cylindrical floater 10 can occur in the entire range. Absent. Further, as is clear from the above description, the stable progress of the strip 17 is realized by a simple configuration. Therefore, according to the present invention, an inexpensive strip change direction change device is provided. can do.
[0027]
In the description of the above embodiment, FIG. 2 and FIG. 3 show the case where the mask means 21 in the area of the circular gas outlet 13 is divided into three parts, but this three-divided mask means 21 is integrated. In addition, only the mask means 23 at the slit-type gas outlet 14 may be separated from the integrated mask means 21. Even in this case, it is obvious that the same operational effects as described above can be enjoyed.
[0028]
In addition, in the above-described embodiment, a total of three flying height detectors 15 are provided at the entrance portion, the exit portion, and the central portion of the belt-like material 17 travel area, but the present invention is limited to this configuration. It is not something. For example, depending on circumstances, a configuration may be adopted in which a plurality of the flying height detector 15 for the zone 17 traveling area other than the entrance and exit, that is, for the circular gas jet 13 area (for the intermediate part) is provided. In this case, an average value is obtained from the detection values of the plurality of flying height detectors 15, and control is performed so that the flying height of the strip 17 at the entrance and exit is 1.1 times. That's fine.
[0029]
【The invention's effect】
As described above, although the traveling direction changing device for the belt-like material according to claim 1 has a relatively simple configuration of the mask means, the flying height detection means, and the control means, the belt-like material at the entrance and the exit is provided. The flying height of the material can be controlled accurately and appropriately. That is, according to the present invention, it is possible to provide an apparatus for changing the direction of travel of a strip-shaped material that allows the stable operation to be performed with little risk of the strip-shaped material and the cylindrical floater coming into contact with each other. Moreover, since this is a relatively simple configuration as described above, the cost of the apparatus can be kept low.
[0030]
Further, since the traveling direction changing device for a strip-shaped material according to claim 2 is provided with a mask means in the middle portion of the spiral strip-shaped range of the cylindrical floater, an appropriate flying height of the strip-shaped material also in the middle portion. Can be secured. In addition, from this, since the progress of the strip material at the entrance and exit portions described above can be more stably carried out, as a result, the progress of the stable strip material is realized in the entire spiral belt range. can do.
[0031]
Further, the traveling direction changing device for the strip-shaped material according to claim 3, wherein the mask means is mounted inside or outside the cylindrical floater, and the flying height detection means is provided along the outer surface of the cylindrical floater. The adjustment of the gas jetting area by the mask means and the detection of the flying height by the flying height detection means can be performed more accurately than the above.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a strip material traveling direction changing device according to an embodiment of the present invention.
FIG. 2 is an inner surface development view of the belt-shaped material advancing direction changing device shown in FIG.
3 is a cross-sectional view taken along the line III-III shown in FIG.
4 is a side view relating to the flying height detector of the arrow IV-IV shown in FIG. 3. FIG.
FIG. 5 is a side view relating to the flying height detector of the arrow VV shown in FIG. 3;
FIG. 6 is a schematic plan view of a conventional strip material traveling direction changing device.
FIG. 7 is a cross-sectional view of the belt-shaped material advancing direction changing device shown in FIG. 6 as viewed from the axial direction.
FIG. 8 is a schematic plan view of a belt-like material traveling direction changing device that is different from FIGS. 6 and 7;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cylindrical floater 10 'Cylindrical floater inner surface 13 Circular gas ejection port 14 Slit-shaped gas ejection port 15 Levitation amount detector (levitation amount detection means)
16 Control device (control means)
17 Strips 21, 23 Mask means

Claims (3)

A device for changing the direction of travel of a strip-shaped material having a gas outlet in the spiral-band-shaped range of the strip-shaped material facing surface forming a curved surface of a cylindrical floater,
Mask means for adjusting the area of the gas jets of the gas jets provided at the entrance and exit of the strip for the spiral zone,
A flying height detecting means for detecting the flying height of the strip-shaped material with respect to the outer surface of the cylindrical floater;
The mask means is configured so that the flying height of the belt-like material at the entrance and the exit is larger than the flying height of the belt-like material at an intermediate portion of the spiral belt-shaped range based on a detection value by the flying height detection means. An apparatus for changing the direction of travel of a belt-shaped material, comprising: a control means for adjusting. 2. The moving direction changing device for a belt-like material according to claim 1, wherein the mask means is provided in an intermediate portion of the range of the spiral belt-like material. 3. A strip moving direction changing device according to claim 1, wherein said mask means is mounted inside or outside said cylindrical floater, and said flying height detecting means is provided along an outer surface of said cylindrical floater. .

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