JPH0555368B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a wrapping device for coils of metal strips such as steel strips, and more specifically, to a wrapping device for neatly folding the end faces of coil wrapping paper.

(B) Prior Art Metal strip coils such as steel strips are shipped after being neatly wrapped in wrapping paper to prevent rusting and scratches. Traditionally, this packaging work has been done manually. An example of this packaging work will be briefly explained with reference to FIG.

The metal band coil 1 is placed on a coil truck 2 and transported at a predetermined pitch (A). Workers wait on both sides of the conveyance line and perform predetermined tasks. First, the wrapping paper 3 is wrapped around the outer circumference of the coil 1 (B). Next, the ears of the wrapping paper 3 are folded (C), the ears are folded (D), the center part is pushed into the hole of the coil (E), and finally, tape is attached to the pressed part to fix it (F).

This packaging work requires a great deal of labor and time, and there has been a strong demand for its automation. Therefore, several automatic packaging devices have been proposed, but all of them require complicated and large-scale equipment and have not been put into practical use.
The reasons for this are that the wrapping paper itself is weak and difficult to handle, that the width and diameter of the metal band coil varies, and that the coil itself is heavy. Because you need it.

(c) Problem to be solved by the invention The problem to be solved by the invention is that metal strip coils can be packaged quickly and reliably using as simple equipment as possible without making major changes to existing equipment. lies in obtaining automatic equipment.

(d) Means for Solving the Problems The metal band coil packaging device of the present invention is arranged so that wrapping paper is wrapped around the outer periphery of the metal band coil, and the metal band coil is movable forward and backward on the guide rail with respect to the end face thereof placed at a predetermined position. a first cart placed on the first cart, a lifting platform mounted on the first cart so as to be movable up and down, and a second cart placed on the lifting platform and movable forward and backward with respect to the end face of the metal band coil. a support mechanism that supports the first shaft in a cantilever manner on the second truck parallel to the moving direction of the second truck; A plurality of screw shafts are attached radially with a bit, and an expansion/contraction mechanism is used to move the nut members engaged with the screw shafts simultaneously on the same position in the radial direction of the drum, and a horizontal arm perpendicular to the screw shafts. a first folding plate is fixed to one end of the horizontal arm, a second folding plate is rotatably attached below the tip of the first folding plate; 3
A folding plate is rotatably attached above the tip of the first folding plate, and an ear tab is rotatably attached to the first folding plate below the first folding plate and adjacent to the second folding plate. a folding plate mechanism that pinches the selvedge of the wrapping paper between the second folding plate and the selvedge tab and bends it toward the end face of the metal band coil; a folding plate operating mechanism mounted on the second truck for operating the folding plate mechanism; and a folding plate operating mechanism mounted on the second truck for operating the folding plate mechanism by a predetermined angle.
A drum rotating mechanism that rotates about the shaft, a second shaft rotatably mounted inside the first shaft, and a horizontal bar movable in the radial direction attached to the end of the second shaft on the metal band coil side. The above-mentioned problem is solved by a means consisting of a droop correction mechanism.

(e) Operation The packaging device of the present invention processes the edges of the wrapping paper in the following order of operation.

First, the entire apparatus is guided to a standby position of a metal band coil wrapped with wrapping paper using the first truck and the lifting platform. The lifting platform adjusts the center position of the device according to changes in coil diameter.

If the wrapping paper is not stiff, the wrapping paper may runny. Therefore, if necessary, the ear discharge is first corrected using the ear discharge correction mechanism and the second cart.

Next, the flap of the wrapping paper is pinched by the folding plate mechanism, and the expansion/contraction mechanism and the second cart are operated to bend the flap toward the end surface of the metal band coil and in the inner diameter direction. After the folding is completed, the folding plate mechanism is rotated by a predetermined angle by the drum rotation mechanism to perform ear folding.

The selvage pressing and tape application are performed by a separate tape application device that is on standby in the next process.

(F) Embodiment FIG. 1 schematically shows a partial layout of an example of a conveyance line in which the metal band coil packaging apparatus of the present invention is installed. The conveyance line 4 is made up of a chain conveyor 5 with coil carts 2 fixed at a predetermined pitch. The metal band coil 1 is placed on a coil truck 2 and sent along a conveyance line 4 at a predetermined pitch.

The coil 1 is placed on the coil truck 2 by an overhead crane (not shown) and is lowered from the coil truck 2. A wrapping paper 3 of a predetermined width is wrapped around the outer periphery of the coil 1 by a paper wrapping device 7 (FIG. 2B). Next, the coil 1 is subjected to the edge treatment of the wrapping paper 3 by the wrapping device 10 of the present invention (FIGS. 2 C to E). Finally, the coil 1 is sent to a taping device 8, and the edges of the wrapping paper pushed into the holes of the coil 1 are fixed with tape (FIG. 2F).

When the apparatus of the present invention is in operation, the coil 1 remains fixed on the trolley 2, and is not suspended midway due to the convenience of the process. The apparatus of the present invention is installed on both sides of the conveying line and starts working on both end faces of the coil 1 at the same time, or starts working on one side of the coil 1 sequentially. Which one to select is determined as appropriate depending on work conditions and the like.

The width of the wrapping paper 3 must be at least larger than the width of the coil truck 2.

Next, an embodiment of the packaging device of the present invention will be described with reference to FIGS. 3 to 8. The packaging device 10 of the present invention is made up of a cart unit 20, a support mechanism 30, an expansion/contraction mechanism 40, a folding plate mechanism 50, a folding plate actuating mechanism 60, a drum rotation mechanism 70, and an ear droop correction mechanism 80 if necessary. .

The truck unit 20 is made up of a first truck 21, a lifting platform 22, and a second truck 24, as shown in FIGS. 3 and 4. The trolley unit 20 positions the folding plate mechanism 50 and the like at a predetermined work position, and also performs joint operations to perform a predetermined work.

In Figures 3 and 4, the trolley unit 2
0 is a vehicle 1 arranged perpendicularly to the traveling direction of the coil truck 2 by a plurality of wheels 210 provided on both sides.
A first truck 21 that is movable on a pair of guide rails 11, a lifting platform 22 that is movably guided up and down by pillars 211 that are fixed upright at the four corners of the first truck, and both sides. The second rail is movable on a pair of guide rails 23 fixed on the lifting platform 22 by means of a plurality of wheels 240 provided on the platform.
It is equipped with a trolley 24. Four screw shafts 25 are rotatably attached to the first truck 21 in an upright state. The bearing 22 of the lifting platform 22 is attached to the screw shaft 25.
1 are screwed together, and the lifting platform 22 can be moved up and down by rotation of the screw shaft 25.

The screw shafts 25 are simultaneously rotated by a drive mechanism 26 of a known structure including a motor 260. Note that the first cart and the second cart are each independently moved by a known drive mechanism (not shown) including an electric motor.

As shown in FIGS. 4 and 6, the support mechanism 30 is made up of a column 31 and a hollow shaft 32, and functions to support the expansion/contraction mechanism 40 and the like.

The support column 31 is fixed perpendicularly to the rear end of the second truck 24. One end of the hollow shaft 3 is fixed to the upper part of the support column 31, and extends in a cantilevered manner parallel to the moving direction of the second truck 24. A conventional end cap 321 is attached to each end of the hollow shaft 32.

As shown in FIGS. 4 and 6, the expansion/contraction mechanism 40 includes a drum 41, a screw shaft 42, and a nut member 4.
3. It is made up of a driving device 44, and a nut member 4
3 at the same position in the radial direction of the drum 41 in synchronization.

The drum 41 includes an outer ring 411 and a central boss 4.
12, it is made up of a side frame 413.
Central boss 412 is rotatably attached to the free end of hollow shaft 32. The side frames 413 extend radially from the central boss 412 to the outer ring 411, and are arranged at predetermined pitches (18 degree intervals in this embodiment) in the circumferential direction of the outer ring 411.
The outer ring 411 is rotatably supported by a roller 72, which will be described later.

The screw shaft 42 is connected to a central boss 412 and an outer ring 41 at the center of each side frame 413.
1 and is rotatably supported. The screw shafts 42 are arranged at predetermined pitches (18 degree intervals in this embodiment) in the circumferential direction of the outer ring 411.

The radially inner end of each screw shaft 42 has a central boss 4
12 and extends inside it. A small bevel gear 421 is fixed to its tip, and engages with a large bevel gear 441, which will be described later.

One or more radially outer ends of the threaded shafts 42 protrude through the outer ring 411, and a sprocket 422 is fixed to the tip thereof. The sprocket 422 is driven by a motor 442, which will be described later, through a chain.

The drive device 44 is made up of a large bevel gear 441 and a motor 442. Large bevel gear 44
1 is rotatably attached to the hollow shaft 32 within the central boss 412. Large bevel gear 441
engages each small bevel gear 421 as described above. The motor 442 is fixed to the side frame 413 near the outer ring 411, and its output shaft is connected to the sprocket 422 through a chain as described above.

The nut member 43 engages with the screw shaft 42 and is slidably engaged with the side frame 413 in a state where rotation is prevented. When the screw shaft 42 is rotated, the nut member 43 moves in the radial direction of the screw shaft 42 and the outer ring 411. Each nut member 43 is initially set to the same radial position.

The drum rotation mechanism 70 is made up of a fluid pressure cylinder 71 and a roller 72, as shown in FIGS. 4 and 6. One end of the fluid pressure cylinder 71 is connected to the second
It is rotatably attached to the trolley 24, and the other end is rotatably attached to the outer ring 411. The rollers 72 are rotatably attached to the second cart 24 in parallel with a predetermined interval, and rotatably support the outer ring 411.

The fluid pressure cylinder 71 functions to rotate the outer circumferential ring 411 by a predetermined angle θ (preferably two or more circumferential pitches of the screw shaft 42).

The folding plate mechanism 50, as shown in FIGS. 4, 6, and 8, includes a horizontal arm 51, a first folding plate 52, a second folding plate 53, a third folding plate 54, an ear knob 55,
It is made up of an actuating member 56. Folding plate mechanism 50
has the function of pinching the selvage of the wrapping paper protruding from the metal band coil, bending it toward the end face of the coil, and then folding down the ridges of the selvage in the circumferential direction.

The horizontal arm 51 is arranged in a direction perpendicular to the screw shaft 42;
In other words, the nut member 4 extends in the horizontal direction.
It is fixed at 3. At one end of the horizontal arm 51, a first
A folding plate 52 is fixed, and the other end passes through a moving frame 62, which will be described later, and engages with a fixed frame 61 so as to be slidable in the radial direction.

The second folding plate 53 is rotatably attached below the tip of the first folding plate 52, and the third folding plate 53
4 is rotatably attached above the tip of the first folding plate 52. The ear tab 55 is rotatably attached to the first folding plate 52 adjacent to the second folding plate 53 below the tip of the first folding plate 52 .

The second folding plate 53 works in conjunction with the ear knob 55 to pinch the ear. In order to perform this operation smoothly and reliably, it is preferable that the second folding plate 53 has a conventional suction function.

The third folding plate 54 is selectively used depending on the diameter of the metal band coil 1. For example, when the coil diameter is relatively large, it is rotated to the position shown by the two-dot chain line in FIG.

The actuating member 56 includes a fluid pressure cylinder 561, a first connecting rod 562, a second connecting rod 563, a first lever 564,
It is made up of a second lever 565, a first pinion 566, and a second pinion 567.

One end of the fluid pressure cylinder 561 is connected to the first folding plate 52
It is rotatably attached to the lower rear end, and the other end is rotatably attached to one end of the ear knob 55. The fluid pressure cylinder 561 rotates the ear knob 55 counterclockwise, for example, when the piston rod is pushed out in the direction of the arrow.

One end of the first continuous rod 562 is rotatably attached to one end of the first lever 564, and the other end is rotatably attached to the other end of the second folding plate 53. The other end of the first lever 564 is the first pinion 56
6, and the first pinion 566 is rotatably attached to the first folding plate 52. A first pinion 566 engages a first rack 64, which will be described below. When the first pinion 566 is rotated counterclockwise, the second folding plate 53 is rotated counterclockwise.

One end of the second continuous rod 563 is rotatably attached to one end of the second lever 565, and the other end is rotatably attached to the other end of the third folding plate 54. The other end of the second lever 565 is the second pinion 56
7, and the second pinion 567 is rotatably attached to the first folding plate 52. The second pinion 567 is engaged with a second rack 65, which will be described later. When the second pinion 567 is rotated counterclockwise, the third folding plate 54 is rotated clockwise.

As shown by the two-dot chain line in FIG. 8, the second folding plate 5
When the third folding plate 54 and the third folding plate 54 are rotated to the maximum extent, they coincide with the tip of the first folding plate 52, and the edges of each plate are aligned in a line. This alignment edge will be parallel to the coil end face.

The folding plate actuation mechanism 60, as shown in FIG.
It is made up of a fixed frame 61, a moving frame 62, a fluid cylinder 63, a first rack 64, and a second rack 65. The folding plate actuation mechanism 60 is the second folding plate 5
3. Functions to rotate the third folding plate 54.

The fixed frame 61 is rotatably supported by the hollow shaft 32 and restrained from moving in the axial direction. A movable frame 62 is rotatably and slidably attached to the hollow shaft 32 between the fixed frame 61 and the expansion/contraction mechanism 40. A fluid pressure cylinder 63 is connected between the fixed frame 61 and the moving frame 62.

The rear ends of the first rack 64 and the second rack 65 are slidably engaged with the long grooves 621 of the moving frame 62, respectively. The rear end of the horizontal arm 51 passes through the movable frame 62 and is slidably engaged with a guide 611 provided on the fixed frame 61.

In this embodiment, the folding plate mechanism 50 is
As shown in the figure, there are 20 pairs, and they are provided in the expansion/contraction mechanism 40 at constant circumferential pitches. Each horizontal arm 51, each first rack 64, and each second rack 65 is engaged with a corresponding number of guides 611 and long grooves 621, respectively.

Many wrapping papers can cause ear discharge even in small-diameter coils, and even more so in the case of large-diameter coils, most paper-based wrapping papers can cause ear discharge. For this purpose, it is necessary to provide the ear droop correction mechanism 80. As shown in FIG. 7, the ear droop correction mechanism 80 includes a second hollow shaft 81, a fluid pressure cylinder 82,
It consists of a horizontal bar 83, a sprocket 84, and a motor 85.

The second hollow shaft 81 is rotatably fitted inside the hollow shaft 32. A fluid pressure cylinder 82 is fixed perpendicularly to the shaft 81 at the free end of a second hollow shaft 81 that protrudes from the front end (right side in FIG. 7) of the hollow shaft 32. At the tip of the piston rod of the fluid pressure cylinder 82,
A horizontal bar 83 is fixed parallel to the axis 81. By actuating the hydraulic cylinder 82, the horizontal bar 83 can be moved in the radial direction of the shaft 81.

A sprocket 8 is attached to the free end of the second hollow shaft 81 protruding from the rear end of the hollow shaft 32 (left side in FIG. 7).
4 is fixed. The sprocket 84 is connected to the support 31
It is driven by a motor 85 fixed to the top of the. When sprocket 84 is driven, horizontal bar 83 rotates about axis 81.

At both ends of the second hollow shaft 81, a conventional end
Cap 811 is attached.

Next, the operation of the apparatus of the present invention will be briefly explained. As shown in FIGS. 3 and 4, first, the entire apparatus 10 is guided by the first cart 21 and the lifting platform 22 to the standby position of the metal strip coil 1 around which the wrapping paper 3 is wrapped. The lifting table 22 adjusts the center position of the device 10 according to changes in the coil diameter.

In order to correct the ear drip of the wrapping paper, the ear drip is first corrected by the ear drip correction mechanism 80 and the second cart 24.

To perform this correction work, first, the folding plate mechanism 5
0 is retracted to the maximum radial position of the drum 41, and the horizontal bar 83 is retracted to the minimum radial position of the drum 41. Next, the second cart 24 is moved forward and the horizontal bar 83 is inserted inside the selvage of the wrapping paper 3. Raise the horizontal bar 83 to the outer diameter position of the coil 1,
Circulate inside the ear. This operation corrects normal ear discharge. After correction, the horizontal bar 83 is lowered,
The second truck 24 moves backward.

Next, the edges of the wrapping paper 3 are pinched by the folding plate mechanism 50, and the expansion/contraction mechanism 40 and the second cart 24 are operated to bend the edges toward the end surface of the metal band coil 1 and in the inner diameter direction. After the folding is completed, the folding plate mechanism 50 is rotated by a predetermined angle θ by the drum rotating mechanism 70 to perform ear folding.

First, as shown in FIG. 8, the second folding plate 53 is
It is held in a horizontal position, and the expansion/contraction mechanism 40 is operated so that the second folding plate 53 is positioned slightly outside the radial position of the ear. Next, the second cart 24 is moved forward and stopped when the ear is between the ear knob 55 and the second folding plate 53.

The ears are pinched between the ear knobs 55 and the second folding plates 53, and the expansion/contraction mechanism 40 moves the horizontal arms 51 inward in the radial direction of the drum 41 all at once, and the second cart 24 is moved forward. It is preferable that this linked operation is controlled so that the ear tab 55 and the second folding plate 53 draw an arcuate trajectory. Further, the ear knob 55 and the second folding plate 53 sequentially rotate counterclockwise on an arcuate trajectory. This rotational movement is controlled by the actuating member 56 and the folding plate actuating mechanism 60.

In this way, the ears are bent in the inner diameter direction toward the end face of the coil 1.

Next, the drum rotation mechanism 70 is activated to rotate the folding plate mechanism 50 around the drum 41 by a predetermined angle θ in the circumferential direction. At this time, the folded peaks of the ears are folded down. When the coil diameter is large, a third folding plate 54 is also used.

The selvage pressing and tape application are performed by another tape application device 8 (FIG. 1) which is on standby in the next process.

(G) Effects According to the wrapping device for metal band coils of the present invention, the following effects can be obtained.

Metal strip coils of various sizes can be packaged automatically and quickly.

Therefore, it is possible to save labor and reduce costs in packaging work.

The work is safe because it can be carried out with the heavy metal strip coil placed on the trolley.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing a partial layout of an example of a conveyance line in which a metal band coil packaging apparatus of the present invention is installed. FIG. 2 is an explanatory diagram showing the packaging process for metal band coils. FIG. 3 is a side view of the device of the invention. FIG. 4 is a cross-sectional view taken from the - line in FIG. 3. FIG. 5 is a partial sectional view taken along the - line in FIG. 4. FIG. 6 is a longitudinal cross-sectional view of the main parts of the device of the present invention.
FIG. 7 is a drawing similar to FIG. 6 and shows another modification of the device of the invention. FIG. 8 is an enlarged side view of the folding plate mechanism. 10... Packaging device, 20... Cart unit, 3
0...Support mechanism, 40...Expansion/contraction mechanism, 50...Folding plate mechanism, 60...Folding plate operating mechanism, 70...Drum rotation mechanism, 80...Ear droop correction mechanism.

Claims (1)

[Claims] 1. A first cart placed on a guide rail so as to be movable back and forth with respect to the end face of a metal band coil whose outer periphery is wrapped with wrapping paper and placed at a predetermined position;
a lifting platform mounted on the platform so as to be movable up and down; a second platform placed on the platform and movable back and forth with respect to the end face of the metal strip coil; and a second platform parallel to the moving direction of the second platform. A support mechanism that supports one shaft in a cantilevered manner on the second truck, and a drum rotatably attached to the free end of the first shaft, and a plurality of screw shafts are attached radially at predetermined pitches. an expanding/contracting mechanism for simultaneously moving the nut members engaged with the screw shaft in synchronization on the same position in the radial direction of the drum; and a horizontal arm extending perpendicular to the screw shaft and horizontally to the nut member. and fixing a first folding plate to one end of the horizontal arm;
A second folding plate is rotatably attached below the tip of the first folding plate, a third folding plate is rotatably attached above the tip of the first folding plate, and the ear tab is attached below the tip of the first folding plate. It is configured to be rotatably attached to the first folding plate adjacent to the second folding plate, and the edge of the wrapping paper is pinched between the second folding plate and the edge tab to remove the metal band coil. a folding plate mechanism for bending toward an end surface; a folding plate operating mechanism rotatably attached to an intermediate portion of the first shaft and operating the folding plate mechanism; and a folding plate operating mechanism for operating the folding plate mechanism;
a drum rotation mechanism mounted on the truck and configured to rotate the expansion/contraction mechanism by a predetermined angle with respect to the first shaft;
A packaging device for a metal band coil, which comprises an ear droop correction mechanism in which a shaft is attached, and a horizontal bar movable in the radial direction is attached to the end of the second shaft on the metal band coil side.