JPH0646574Y2 - Backside inspection device for strips - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention rewinds a strip-shaped plate coil wound on a reel after continuous casting, and rolls this by a rolling roller on a pass line to form a wrinkle on the surface. The present invention relates to a backside inspection device for a strip-shaped plate that visually inspects the backside of a traveling strip-shaped plate in a coil refiner that removes unevenness in thickness and adjusts the thickness.

[Conventional technology]

It is manufactured continuously by a continuous casting machine, for example, the width is 600 ~ 1800 m
A strip-shaped iron plate with a width of about m and a thickness of about 200 mm is
After being heated to about ℃, it is rolled by a rolling mill to a thickness of 1.2 to 6.5 mm and wound as a coil on a reel.

In such a rolling process, wrinkles are generated on the surface of the iron plate, and a thick part or a thin part is partially formed on the iron plate, so conventionally, a rolling machine called a skin pass mill was provided to correct this. A coil refiner is provided.

A conventional coil trimming machine includes a payoff reel that is provided on the entrance side of the pass line and is driven to rotate, and a tension reel that is provided on the exit side of the pass line and is driven to rotate. A skin pass mill as a rolling mill is provided between them. Further, between the payoff reel and the skin pass mill, there is provided a straightener having a plurality of rollers arranged in a zigzag pattern.
Furthermore, between the skin pass mill and the tension reel,
Various measuring instruments and oiling devices are provided.

With such a configuration, the strip-shaped iron plate is fed to the drum on the drum shaft by the rewinding of the coil from the bobbin and is fed to the pay-off reel, and the fed strip-shaped iron plate is straightened by the straightener. After that, it is refined by rolling with a skin pass mill. The width, thickness, etc. of the refined strip-shaped iron plate are measured, and oil is applied if necessary, and then the coil is wound on a tension reel into a coil and taken out of the machine by a coil car.

In such coil refinement, the strip that is unwound from the coil may be damaged, and there is a risk that the strip will be wound up and shipped. It is necessary to inspect and remove defective products.

[Problems to be solved by the device]

However, in the conventional coil trimming machine, it is easy to inspect the front surface of the strip plate, but when inspecting the back surface of the strip plate, the lower part of the strip plate is shielded by the guide table. It was extremely difficult to see, and I sometimes overlooked the scratches and shipped them as they were. Further, even if it is visible, there is a problem that it requires a great amount of labor and mental fatigue because it is necessary to look in a cramped posture while facing up.

[Means for Solving the Problems]

In order to solve such a problem, a strip plate back surface inspection apparatus according to the present invention has a guide surface which is provided so as to be able to move forward and backward in a direction orthogonal to a traveling path of the strip plate and which is close to the back surface of the strip plate when entering. The movable guide table and the movable guide table, which holds the movable guide table movably below the traveling path of the strip-shaped plate corresponding to the entry position of the movable guide table, has an opening that penetrates in the vertical direction in the central portion, and has a strip-shaped plate guide. With guide frames for use at the front and rear ends in the traveling direction of the strip, a portion corresponding to the moving guide table entry position in the traveling path of the strip, the opening of the frame and the space below it. In a state of communicating with each other, and a pit provided under the traveling path of the belt-like plate, and a movable guide which is inclined and arranged at a position corresponding to the lower side of the opening in the pit. It is obtained by a structure in which a reflecting mirror for reflecting the back surface of the strip plate traveling the travel path during retreat de table visibly.

[Action]

According to the present invention, when the adjusting work is started in a state where the moving guide table is inserted into the traveling path of the strip-shaped plate, the tip of the traveling strip-shaped plate is guided by the guide surface above the moving guide table. The body is transported to the downstream side of the traveling path without hanging down.

Further, when inspecting the back surface of the traveling strip in this manner, the worker enters a pit provided under the traveling path of the strip and sits down on a chair. Thus, the movement guide table may be retracted in a direction orthogonal to the traveling path, and the lower part of the strip plate may be opened through the opening part of the frame and the space part therebelow. That is, in this state, the back surface of the strip is
Since the light is reflected by a reflector that is tilted downward in the pit facing the traveling path through the opening, the worker in the pit can visually check the reflector while sitting on the belt-shaped body. You can perform backside inspection.

〔Example〕

1 to 5 show an embodiment of a back surface inspection apparatus for a strip-shaped plate according to the present invention. FIG. 1 is a side view of the back surface inspection apparatus and its vicinity, and FIG. 2 is a back surface inspection apparatus in FIG. FIG. 3 is an enlarged side view of the band-shaped plate entrance portion of FIG. 3, FIG. 3 is a plan view of the back surface inspection device, FIG. 4 is a schematic side view of a coil trimming machine embodying the present invention, and FIG.

In FIG. 4 and FIG. 5, the coil trimming machine 1 is provided on the entrance side of the pass line 2 and is provided on the pay-off reel 3 which is rotationally driven by a drive device (not shown), and on the exit side of the bus line 2. It is equipped with a tension reel 4 which is rotationally driven by a drive device (not shown).
A skin pass mill 5 as a rolling mill provided with four rolling rollers pressed vertically by hydraulic pressure or the like is provided between the pass line 2 and
It is provided above. A straightener 6 having a plurality of rollers arranged in a zigzag manner is provided between the pie-off reel 3 and the skin pass mill 5. Further, for example, a straightener 6 is provided on the pass line 2 adjacent to the straightener 6. Is provided with a shear 7 for cutting an iron plate. Furthermore, between the skin pass mill 5 and the tension reel 4, a flatness meter 8 and a thickness meter
9, gauges such as a width gauge 10 and the like, a back surface inspection device 11 (detailed later) and an oiling device 12 are provided. 13 is a coil which is supplied to and supported by the payoff reel 3.
A strip-shaped iron plate 14 is unwound from 13 and the iron plate 14 passes through the pass line 2 and is coiled onto the tension reel 4 by a coil 15.
It is wound up and supported. 16 and 17 are guide rollers for guiding the iron plate 14. Reference numeral 18 is a coil car for supplying the coil 13 to the payoff reel 3, and 19 is a coil car for taking out the coil 15 from the tension reel 4.

Therefore, the back surface inspection apparatus 11 will be described with reference to FIGS. The back surface inspection device 11 is disposed in the traveling path of the iron plate 14 between the width meter 10 for measuring the width of the iron plate 14 and the oiling device 12 for applying oil to both surfaces of the iron plate 14. On the upstream side of the width meter 10, a flatness meter 8 for detecting wrinkles and bulges on the surface of the iron plate 14 and a thickness meter 9 for measuring the thickness of the iron plate 14 are provided. A pit as shown in FIG. 1 is provided below the traveling path of the iron plate 14 between the start end of the shear 7 and the end of the back surface inspection device 11 in FIGS. 4 and 5.
20 is provided below the floor surface, and the bed 21 is supported by a column 22 for a part of its weight. Also, the upstream bed 21
A space portion 24 is formed between the bed 23 and the bed 23 on the downstream side, and the pit 20 has the strip-shaped iron plate through the space portion 24.
The traveling path of 14 and the movement guide table 29 are communicated with each other when leaving, and the back surface of the iron plate 14 can be visually inspected. The back surface inspection device 11 includes a frame-shaped frame 25 supported by the front and rear beds 21 and 23. The frame 25 is provided with an opening penetrating in the vertical direction at the center thereof. A plurality of guide rollers 26, 27 are arranged side by side on roller shafts supported by bearings at both front and rear ends in the running direction of the iron plate 14, which is a strip-shaped plate, with the parts sandwiched therebetween. On the frame 25, a rail 28 formed in the shape of a vertically long rectangular frame by a U-shaped steel is supported by being positioned between the front and rear guide rollers 26, 27 orthogonal to the traveling path of the iron plate 14,
About half of the rail 28 is projected laterally of the machine base. Reference numeral 29 is a moving guide table formed in the shape of a vertically long rectangular frame having a total length of about half the length of the rail 28. It is configured so that it can move back and forth with respect to the traveling path of the iron plate 14. A guide plate 31 as a guide surface for supporting the iron plate 14 so as not to hang down when it enters the traveling path is fixed to the upper part of the moving guide table 29 with a slight inclination.

A motor 33 is fixed on a motor base 32 protruding laterally from the bed 23, and a sprocket is attached to the motor shaft.
34 is pivoted. On the other hand, on the sprocket shaft 35, which is rotatably supported on the lower surface of the rail 28 via bearings,
36 is pivotally mounted, and a chain 37 is stretched between the sprockets 34, 36. A pair of sprockets 38, 39 is axially mounted on the sprocket shaft 35, and each sprocket 38, 39 meshes with a chain-shaped rack 40 mounted on both long sides of the moving guide table 29 over the entire length. There is. By doing this, when the motor shaft of the motor 33 rotates, the rotation is transmitted to the sprocket shaft 35 by the chain 37, and by the engagement of the sprocket 38, 39 and the rack 40,
The movement guide table 29 is configured to move back and forth along the path.

Below the space 24, which is below the entry position of the movement guide table 29, a reflecting mirror 41 is supported in the pit 20 with an inclination of about 45 °, and the movement guide table 29 retreats out of the machine. At this time, the rear surface of the iron plate 14 is reflected and deflected in a substantially horizontal direction, so that the operator can visually check it while sitting on the pit 20.

42 is a guide table provided on the width meter 10 side, and 43,4
Reference numeral 4 denotes a guide table provided on the oil applying device 12 side.
In addition, above the place where the worker is located in the pit 20,
Safety cover 45 for blocking scales falling from above
Is provided.

The operation of the coil refiner configured as above will be described. The coils 13 unloaded onto a plurality of coil mounting bases by a crane are unloaded from the binding bands, and then sequentially mounted on the coil car 18, and are supplied to the pay-off reel 3 by the movement of the coil car 18. The strip-shaped iron plate 14 fed out by rewinding the coil 13 which is rotationally driven on the pay-off reel 3 is straightened by a straightener 6 and then rolled by a skin pass mill 5 to remove wrinkles and uneven thickness on the surface. It is done and refined. The refined iron plate 14 has various measuring instruments 8, 9, 10
The oil is applied to both sides by the oil applying device 12 as required, and then wound into the coil 15 on the tension reel 4. The wound coil 15 is taken out on the coil base by the coil car 19, bound by a band, then weighed by a weighing machine and shipped. The fish tail, which is a defective portion of the coil end portion, is cut and removed by the shear 7.

In such a coil adjusting operation, when the adjusting operation is started in a state where the moving guide table 29 is inserted into the traveling path of the iron plate 14, the tip of the traveling iron plate 14 is guided by the guide table 42. It faces the guide table 43, but there is the guide plate 31 of the moving guide table 29 and the iron plate.
Since 14 is guided by this, it is transported forward without hanging down.

When inspecting the back side of the traveling iron plate 14, the worker is
24 It is located in the pit 20 below and is hung on a chair. For example, the motor 33 is started by a push button operation and the chain 37
Rotate the sprocket shaft 35 through the
The moving guide table moves toward the outside of the machine due to the meshing of the racks 40 and 38 and 39, and moves away from the traveling path of the iron plate 14
The bottom of the iron plate 14 is open,
A reflecting mirror 41 provided inside 20 reflects in a horizontal direction, and an operator can inspect the presence of scratches while sitting on it and visually inspecting it. Although there is no guide plate 31 below the traveling iron plate 14 during the inspection, since the iron plate 14 is continuously conveyed from the guide roller 26 to the guide roller 27, it does not sag and there is no problem. When the inspection is completed, the motor 33 is rotated in the reverse direction by the push button operation, so that the movement guide table 29 enters the traveling path of the iron plate 14 and the adjusting work can be continued.

[Effect of device]

As described above, according to the strip-shaped plate back surface inspection apparatus of the present invention, in the coil trimming machine, the strip plate is provided so as to be able to advance and retreat in a direction orthogonal to the traveling path of the strip plate, and to approach the back surface of the strip plate when entering. A moving guide table having a guide surface, and a movable guide table movably held below the traveling path of the strip-shaped plate corresponding to the entry position of the moving guide table, and an opening penetrating in the vertical direction in the central portion. And a frame in which guide rollers for guiding the strip-shaped plate are provided at both front and rear ends in the traveling direction of the strip-shaped plate, a portion corresponding to a moving guide table entry position on the traveling path of the strip-shaped plate, the opening of the frame and the lower portion thereof. And a pit provided below the running path of the strip plate in a state of communicating with each other through the space portion, and tilted to a position corresponding to below the opening in the pit Since a structure in which a reflecting mirror for visibly reflective back surface of the strip plate traveling the travel path during retreat arranged movable guide table Te, exhibits various excellent effects as follows.

That is, according to the present invention, when performing the back surface inspection of the strip traveling on the traveling path, the worker sits on the chair in the pit below the traveling path and leaves the moving guide table to move into the pit. With the inclined mirror, it is possible to visually inspect the presence or absence of scratches while looking at the front in the pit. And in such a configuration,
Since the back surface of the strip plate can be inspected in a comfortable posture, the labor of the operator can be reduced, mental fatigue is eliminated, scratches are not overlooked, and the product quality is improved.

Further, according to the present invention, the moving guide table is inserted into the traveling path of the strip during non-inspection, and the tip of the strip can be guided by the upper guide surface of the strip, so that the tip of the strip hangs down. It is possible to prevent accidents.

[Brief description of drawings]

1 to 5 show an embodiment of a back surface inspection apparatus for a strip-shaped plate according to the present invention. FIG. 1 is a side view of the back surface inspection apparatus and its vicinity, and FIG. 2 is a back surface inspection apparatus in FIG. FIG. 3 is an enlarged side view of the band-shaped plate entrance portion of FIG. 3, FIG. 3 is a plan view of the back surface inspection device, FIG. 4 is a schematic side view of a coil trimming machine embodying the present invention, and FIG. 1 ... Coil refiner, 11 ... Back surface inspection device, 14 ... Iron plate, 24 ... Space, 28 ... Rail, 29 ... Moving guide table, 30 ... Wheels, 31 ... Guide plate, 33 ……motor,
41 …… Mirror.

Claims (1)

[Scope of utility model registration request] 1. A moving guide table, which is provided so as to be able to move forward and backward in a direction orthogonal to the traveling path of the belt-like plate and has a guide surface that is close to the back surface of the belt-like plate at the time of entering, and corresponds to the entry position of this moving guide table. A movable guide table is movably held below the traveling path of the strip-shaped plate, and an opening that penetrates in the vertical direction is provided in the center, and guide rollers for guiding the strip-shaped plate are provided at both front and rear ends in the traveling direction of the strip-shaped plate. Of the traveling path of the strip-shaped plate in a state in which the frame and the portion corresponding to the moving guide table entry position in the traveling path of the strip-shaped plate are in communication with each other through the opening of the frame and the space below the frame. The pit provided at the lower side and the traveling diameter when the moving guide table is slanted and arranged at a position corresponding to the lower side of the opening in the pit. Bottom surface inspection apparatus of the belt-like plate, characterized in that a reflecting mirror for visibly reflective back surface of the strip plate traveling.