JPH06122021A - Leading out device for top end of coil of steel plate to be treated - Google Patents

Abstract

PURPOSE:To continue to restrain the top end of a coil and accelerate the automatic treatment of steel plate by positively rotating a supporting means to the top end of the coil in synchronization with the recoiling speed of the coil from a payoff reel. CONSTITUTION:When the top end 19 of the coil peeled from the surface layer has passed the upper part of the lower clamp roll 4, a hydraulic cylinder is activiated, a 2nd tuning arm falls to the lower roll 4 with a bracket 21 mounting upper clamp rolls 5 and a motor, a reduction mechanism 7, etc., and the top end 19 of the coil is held compactly between the upper clam roll 5 and the lower clam roll 4. As the top end 19 of the coil is held in this state, the 1st and 2nd turning arms are turned to the right direction round the center of the horizontal frame 3 at the speed in synchronization with the delivery speed of the coil from the payoff reel 12 continuing positive rotation from the full line position to the dotted line position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for tipping a coil of a steel sheet to be processed.

Generally, a long steel plate is stocked in a state of once being coiled in the middle of a plurality of processing steps such as rolling and surface treatment. At this time, prior to the subsequent processing step, the coil tip-end ejection device is used.
The coil tip feeding device detects a rewind start end of a coil mounted on a reel called a pay-off reel, separates the coil from the surface layer of the coil and clamps it, and positively rotates in contact with both sides of the lower end of the coil. In synchronization with the movement of the plate material that is rotated by the coil and fed out from the coil, a function that guides it to the inlet of the processing mechanism that consists of pinch rolls, etc. that performs subsequent surface treatment such as skin pass mill or pickling to share the load.

[0003]

2. Description of the Related Art As this type of technology, for example, the following is conventionally known.

First, the rewinding start end is adsorbed and supported by an electromagnet that reciprocates between the stationary position of the coil and the position near the pinch roll of the subsequent processing mechanism by an appropriate means, and is positively rotated. There is a type in which the plate material is guided to a position in the vicinity of the pinch roll in synchronization with the feeding of the plate material to be processed from the coil, the support is released, and the sheet is fed between the pinch rolls (Japanese Patent Laid-Open No. 62-161425).

However, a very high degree of skill is required to reliably and accurately capture the unwinding start end of the coil and move it to the pinch roll. From this point of view, it cannot always be said that this conventional technique has produced satisfactory results. That is, in addition to the restriction on the material of the steel plate to be processed due to the use of the magnet, the thickness of the steel plate is also restricted. Generally speaking, the limit of the thickness of the steel sheet that can be conveyed by the electromagnet is 1.5 mm or less, but even if the thickness is 1.5 mm or less, for example,
Depending on the shape of the unwinding start end of the coil, such as that the winding tendency is not completely corrected, the adsorption by the electromagnet may be difficult. In such a case, it cannot be said that the tip of the coil sometimes drops during conveyance and it becomes impossible to feed it to the pinch roll, and there is a risk of causing an emergency stop of the device.

Secondly, the rewinding start end of the coil at the preparatory position for the subsequent processing is placed on the guide table up to the position near the receiving port of the processing mechanism of the subsequent processing process such as a pinch roll. After advancing forward, the rewinding start end is supported by an appropriate means and made to stand by, and when the rewinding of the coil currently being processed from the payoff reel is completed, The guide table is retracted, and the pinch roll and the supporting means are caused to undergo relative displacement to adjust the positional relationship, and then the support by the supporting means is released, and the rewinding start end is moved to the pinch roll end. Examples thereof include those of a type that is fed in between (Japanese Patent Publication No. 58-6653 and Japanese Utility Model Publication No. 62-17125).

Also in the case of this type, for example, if the coil is accidentally sent out onto the guide table without being corrected, the rewinding start end is caught in the guide table. Therefore, from the technical viewpoint that it is difficult to thread the plate, the winding start end of the coil is reliably and accurately captured, and the coil is moved to the pinch roll, the drawbacks are the same as those of the first type. . The existence of such problems in the conventional technology is a serious obstacle particularly in promoting the automation of this kind of steel sheet material processing.

[0008]

DISCLOSURE OF THE INVENTION The present invention eliminates the drawbacks of the above-mentioned prior art, and allows the coil rewinding start end to be reliably and accurately captured and moved to the pinch roll. It is a technical task to obtain a device and thereby to eliminate a significant technical obstacle in promoting the automation of steel sheet material processing.

[0009]

The inventors of the present invention have
In order to solve the above technical problems, as a result of various studies, in the tip end device of the coil of the steel plate to be processed, the coil is rotated by being brought into contact with the outer peripheral surface of the coil of the supply part of the steel plate to be processed. Along with the provision of a knife-shaped peeling member that can surely peel the rewinding start end of the coil from the body of the coil, a pair of holding the rewinding start end peeled by the peeling member. A nipping roller, a conveying unit that conveys the rewinding start end sandwiched between the rollers to a position near the receiving port of the subsequent processing mechanism unit including a guide member, a pinch roll, and the like, and the winding unit. A means for driving and rotating at least one of the nip rollers at the time when the return start end is introduced into the receiving port of the processing mechanism is solved.

[0010]

In the present invention, the reason why the coil tip cannot be properly introduced into the pinch roll of the subsequent processing mechanism is that in the prior art, the coil tip cannot be continuously supported until the coil tip is completely introduced into the pinch roll. That there is a point,
Further, the reason why the coil tip cannot be supported continuously is that the coil tip support means is an electromagnet found in the prior art or a pair of rolls. Since it does not have a rotating function, after the coil tip is transported to the position near the pinch roll, the support (grasping) state is released at an early timing so as not to obstruct the passage of the coil rewound from the payoff reel. The above improvements have been reached with the recognition that this is because it is unavoidable. Therefore, in the present invention, in the prior art, the coil tip is gripped by the pinch roll after the time when it is left to the free movement of the coil tip, that is, after the support means of the coil tip releases the support of the coil tip. Even in the time zone until the end, in other words, in the most dangerous time zone in the prior art, the support means of the coil tip actively rotates in synchronization with the rewinding speed of the coil from the pay-off reel, so that the coil tip The restraint can be continued.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure, action and effect of one embodiment of the coil tip tip feeding device of the present invention shown in FIGS. 1 to 3 will be described below. In FIGS. 1 and 2, the coil tip end ejecting device of the present invention is indicated by reference numeral 13 in its entirety.

A horizontal frame 3 is attached to bearings 8 on a pair of fixed frames 14 which stand upright on a base 30. A pair of first rotating arms 15 and 15 '(Fig. 2) are arranged on the horizontal frame 3 in the range of the angle defined by the hydraulic cylinder 9 installed on the fixed frame on the vertical plane. Rotate inside. A pair of second pivot arms 16,
16 '(FIG. 2) also rotates in the same rotation range as the set of the first rotation arms 15 and 15'. The defined range of angles is indicated by a solid line on the left side in FIG.
A set of pinch rolls 2 and 2'constituting a contact position between the coil 12 and the lower clamp roll 4 and an inlet of a subsequent processing mechanism such as rolling and pickling, which is indicated by a dotted line on the right side, and its protective plate 1.
It refers to a range of constant angles between neighboring positions such as 7, 17 '.

The upper parts of the first rotating arm sets 15 and 15 'are loosely inserted into the through holes of the horizontal frame 3 and can be raised and lowered in the respective axial directions, and their lower parts are U-shaped. Frame 18
To form. A forked portion 18 'below the U-shaped frame body 18,
18 ″ includes a lower clamp roll 4 as shown in FIG.
Is loosely fitted.

The side surface of one of the forked portions 18 'is shown in FIG.
As will be shown in detail in FIG. 2, a knife 6 for peeling the coil rewind start end 19 from the coil body 12 and a whole 20 for elastically supporting the knife 6 in contact with the surface of the coil 12 are provided. The support mechanism shown is installed.

The axial elevation range of the set of the first rotary arms 15 and 15 ', in other words, the elevation range of the lower clamp roll 4 is attached to the horizontal portion of the frame body 18 as seen in FIG. In addition, the two hydraulic cylinder devices 10, 10 'mounted on the horizontal frame 3 are associated with the two rods that are loosely mounted in the through holes provided in the horizontal frame 3 and can move up and down, and their ends. Defined by the sequence. On the other hand, the second rotating arms 16 and 16 'are
Similar to the set of the rotating arms 15 and 15 ', a U-shaped frame body 31 on which the upper clamp roll 5 is mounted is provided below the pair. The bracket 21 is attached to a part of the U-shaped frame body 31. The bracket 21 has thereon a drive device 7 such as a motor, a speed reduction mechanism, a sprocket, and a chain for driving and rotating the upper clamp roll 5 at a predetermined time.

As will be described later, the upper clamp roll 5 is driven and rotated at a position indicated by a dotted line in FIG. 1 through a suitable means such as a chain. The second rotating arms 16 and 16 ′ are loosely inserted into the horizontal portion of the frame body of the set of the first rotating arms 15 and 15 ′ and the through hole provided in the horizontal frame 3 so as to be able to move up and down. . The second rotating arms 16, 16
The ascending / descending range of the upper clamp roll 5, that is, the ascending / descending range of the upper clamp roll 5, is attached to the central portion of the U-shaped frame body 31, and is provided in the horizontal portion of the frame body 18 of the set of the first rotating arms 15 and 15 ′. It is defined by a sequence given in advance to a set 22 of a rod that is loosely inserted into the through hole and can be raised and lowered and a hydraulic cylinder 22 fixed to the horizontal frame 3. Therefore, the upper clamp roll 5 moves up and down relatively to the lower roll 4 which moves up and down.

A sensor such as a photoelectric tube (not shown)
Attached to the upright fixed frame 14 downward,
This detects that the tip 19 of the rewound coil has reached a predetermined position, and generates a signal instructing the drive of the drive motor of the upper clamp roll 5. Of course, this sensor is not limited in its type and installation location as long as it performs the same function. Reference numeral 24 is a contact pressure roll of the coil 12, which rotates as shown in FIG. 1 following the decrease in the winding diameter of the coil 12.

Next, the elastic support mechanism of the knife 6 generally designated by reference numeral 20 will be described. In FIG. 3, the first rotating arm 1
A knife 6 integrally formed with a lever 25 pivotally attached to one end is provided on the side surface of at least one of the lower forks 18 ′ of the U-shaped frame 18 of the set of 5, 15 ′. The edge portion is arranged so as to project outside the diameter of the lower clamp roll 4 when it does not come into contact with the surface of the coil 12.
The width of the knife 6 is set to be slightly wider than the width of the coil as is clear from FIG. A sleeve 26 is attached to the other end of the lever 25 so as to be rotatable around a bracket 21 having an intermediate portion fixed to one forked portion 18 as a fulcrum.
One end of a rod 27 that slides inside is pivotally attached. The rod 27 constitutes a link mechanism together with the lever 25.
A fixed spring bearing 26 ′ is attached to the tip of the sleeve 26, and a coil spring 29 wound around the rod 27 is interposed between the fixed spring bearing 26 ′ and a spring bearing 28 provided at the other end of the rod 27. One end of the coil spring 29 is
Since it comes into contact with the fixed spring receiver 26 'of the sleeve, the rod 27 is biased upward. Therefore, since the link mechanism urges the lever 25 to rotate counterclockwise, the knife 6 is normally urged together with the lever 25 counterclockwise. One embodiment of the coil tip-end ejecting device of the present invention configured as described above operates as described below, and has desired effects.

First, the coil 12 conveyed by a conveying device, which is located on the left side of FIG. 1, and which is composed of a chain conveyor or the like (not shown), is transferred to a carriage on a coil car (not shown) and reaches the position shown in the drawing. It is mounted on the payoff reel 1. Next, the contact pressure roll 24 is pressed against the coil, and the first and second rotating arms (15, 15 '; 16, 16) waiting at the position shown by the dotted line in FIG.
′) Is rotated leftward about the horizontal frame 3 by the hydraulic cylinder 9 installed on the fixed frame 14 to the solid line position in the figure. The lower clamp rolls 4 attached to the lower forks 18 ′ and 18 ″ of the U-shaped frame 18 of the first rotating arms 15 and 15 ′ are hydraulic cylinders 10 and 1, respectively.
It is lowered to the coil side by the operation of 0 '(FIG. 2). At this time, before the lower clamp roll 4 contacts the surface of the coil 12, the knife 6 contacts the surface of the coil 12 and compresses the spring 29, so that the knife 6 is rotated clockwise. Since it slightly rotates clockwise through the mechanism, its contact with the surface of the coil 12 is elastically and safely performed. The drive roller (not shown) rotated in contact with both sides of the lower end of the coil 12 is the coil 1.
When 2 is rotated in the unwinding direction, the coil tip 19 is separated from the surface layer of the coil 12 by the knife 6 elastically pressed against the surface of the coil 12 as described above. When the coil tip 19 is peeled off by the knife 6, the coil 12 is first rotated counterclockwise while the knife 6 is in contact with the surface of the coil 12 to form the coil tip 19 as necessary. As a step, the coil tip 19
May be detected, and then the coil 12 may be rotated clockwise to scoop the coil tip 19.

When the coil tip 19 separated from the surface layer has finished passing over the upper part of the lower clamp roll 4, the hydraulic cylinder 22 is actuated and the second rotary arms 16, 16 'are
Along with the upper clamp roll 5, the bracket 21 on which the motor, the speed reduction mechanism 7 and the like are mounted, the bracket 21 descends with respect to the lower roll 4, and as shown in FIG. 1, the coil tip 19 is located between the upper clamp roll 5 and the lower clamp roll 4. Hold tightly.

First and second rotating arms (15, 15 ';
16, 16 ') are horizontally moved from the position indicated by the solid line to the position indicated by the dotted line in FIG. 1 at a speed synchronized with the feeding speed of the coil from the payoff reel 12 which continues positive rotation while holding the coil tip 19 in this state. It is rotated to the right around the frame 3. During this rotation period, both the clamp rolls 4 and 5 move so as to draw the shortest trajectory from the pinching start position of the col tip 19 of FIG. 1 to the solid line position on the right side of FIG. In this process, the upper and lower clamp rolls 4 and 5 only maintain the state in which the coil tip 19 is clamped, and are not normally rotationally driven.

When the clamp rolls 4 and 5 holding the coil tip 19 reach the positions near the rotation indicated by the dotted line in FIG. 1, for example, the photoelectric tube detects that the coil tip 19 has approached the pinch rolls 2 and 2 '. The motor receives the command, and drives the upper clamp roll 5 via the speed reduction mechanism at a rotation speed that is synchronized with the speed of the coil fed out. Coil tip 1
When 9 is continuously guided between both clamp rolls 4 and 5, it further advances and is safely introduced between the pinch rolls 2 and 2 ′, the upper and lower clamp rolls 4 and 5 are mutually instructed by a predetermined command. Starting from the separation, the coils are retreated to the positions indicated by the dotted lines in FIG. 1 that do not hinder the passage of the coil that descends as the winding diameter decreases, and the rotation is stopped to stand by for the next processing cycle.

The structure and operation of the first embodiment of the present invention in which the tip of the steel sheet material to be processed coil is rotated about a horizontal frame as a fulcrum has been described above. As is clear from the description of the section, the members provided with both upper and lower clamp rolls and their driving mechanism do not prevent the application to the tip end ejecting device of the steel plate material coil to be processed of the type that reciprocates on the rail. .

[0024]

As described above, according to the present invention, in the prior art, the cause that the support of the coil tip cannot be continued is
The supporting means at the tip of the coil is an electromagnet or a pair of rolls. In any case, these have only a supporting (grasping) function,
Since it does not have a positive rotation function, after the tip of the coil has been conveyed to a position near the pinch roll, it does not block the passage of the coil that is rewound from the payoff reel, so that the coil is supported (gripped) at an early timing. The above-mentioned improvements have been reached with the recognition that it is because there is no choice but to cancel. In the present invention, in the prior art, the time period left to the free movement of the coil tip, that is, after the coil tip supporting means releases the support of the coil tip, until the coil tip is gripped by the pinch roll. In other words, even in the most dangerous time zone in the prior art, the coil tip supporting means positively rotates in synchronization with the rewinding speed of the coil from the pay-off reel to restrain the coil tip. Since it can be continued, it has a great effect in eliminating a serious technical obstacle in promoting the automation of steel sheet material processing.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of one embodiment of a coil tip-feeding device according to the present invention.

FIG. 2 is a side view of an embodiment of the coil tip end ejecting device according to the present invention.

FIG. 3 is an enlarged view taken along line III-III in FIG.

[Explanation of Codes] 1 ... Pay-off reel, 2, 2 '... Pinch roll, 3 ... Horizontal frame, 4 ... Lower clamp roll, 5 ... Upper clamp roll, 6 ... Knife, 7 ... Drive device, 8 ... Bearing, 9, 1
0, 10 ', 22 ... Hydraulic cylinder, 12 ... Coil, 13
... Coil tip feeding device, 14 ... Fixed frame, 1
5, 15 '... 1st turning arm, 16, 16' ... 2nd turning arm,
17, 17 '... Protective plate, 18 ... U-shaped frame body, 18',
18 ″ ... Lower forked portion, 19 ... Coil tip, 20 ... Elastic support mechanism of knife, 21 ... Bracket, 22 ... Hydraulic cylinder, 24 ... Contact roll, 25 ... Lever, 26 ... Sleeve, 26 ′ ... Fixed spring Receiver, 27 ... Rod, 28 ... Spring receiver, 29 ... Coil spring, 30 ... Base, 31 ... U-shaped frame,

Claims (1)

[Claims] 1. A tip end outlet of a steel sheet to be treated, which guides a rewinding start end portion of the steel sheet to be treated, which is placed as a coil in a wound state in a supply portion of the steel sheet to be treated, to a receiving port of a subsequent processing mechanism portion. In the apparatus, a peeling member that is in contact with the outer peripheral surface of the coil of the supply portion of the steel sheet to be processed, and peels the rewinding start end of the coil from the main body of the coil as the coil rotates, and the peeling member. The holding means composed of a pair of holding rollers for holding the rewinding start end that is peeled off in (1), and the rewinding start end sandwiched between these rollers to a position near the receiving port of the subsequent processing mechanism section. And a means for driving and rotating at least one of the nipping rollers when the rewinding start end is introduced into the receiving opening of the processing mechanism section. A device for tapping the tip of a steel plate coil.