JPS62208325A - Packer for metallic band coil - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 copper strips, and more specifically, to a wrapping device for neatly folding the end faces of coil wrapping paper.

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

A metal band coil 1 is placed on a coil trolley 2 and transported at a predetermined pitch. Workers are waiting on both sides of the conveyance line and perform predetermined tasks. First, the wrapping paper 3 is wrapped around the outer periphery of the coil 1 (Bl. Then, the ears of the wrapping paper 3 are folded (0), and the ears are folded (to).
In the old method, the center part is pushed into the hole of the coil.■ Finally, tape is attached to the pushed part to fix it.

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 are complex and costly 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 strip coil varies, and that the coil itself is heavy. Because you need it.

Therefore, the applicant has disclosed an automatic device that can quickly and reliably package metal strip coils using as simple equipment as possible without making any major changes to existing equipment.
No. 9-137629).

However, with this device, problems such as wrinkles and tears occur when the wrapping paper is folded down. The reason for this is that the end face of the metal strip coil usually has some unevenness.
This is because the edges of the wrapping paper may already be sagging or wrinkled, and when the wrapping paper is folded down by the folding plate mechanism, the wrapping paper is twisted due to frictional contact.

(c) Problem to be solved by the invention The problem to be solved by the present invention is to obtain better ear folding by improving a part of the device disclosed in the patent application filed by the applicant mentioned above. There is a particular thing.

B) Means for Solving the Problems The metal band coil packaging device of the present invention has a wrapping paper wrapped around the outer periphery, and an end face of a metal band coil whose central position is adjusted and positioned at a predetermined position by a lower lifting device. a support mechanism that supports a first shaft on the trolley in a cantilevered manner parallel to the direction of movement of the trolley; and a free end of the first shaft. Expansion/contraction in which a plurality of screw shafts are attached radially at a predetermined pitch to a drum rotatably attached to the drum, and the nut members engaged with the screw shafts are moved simultaneously at the same position in the radial direction of the drum. a mechanism, an ear tab and a folding plate that are attached to each of the nut members and pinch the ears of the wrapping paper and bend them toward the end face of the metal band coil; and a plurality of brush rollers that are rotatable independently of each other. a folding mechanism including a folding roller unit supported so as to be elastically displaceable; a folding operation mechanism rotatably attached to the first intermediate portion and operating the folding mechanism; The above-mentioned problem is solved by means comprising a drum rotation mechanism attached to the drum rotating mechanism for rotating the expansion/contraction mechanism by a predetermined angle with respect to the first axis.

(E) Function The packaging device of the present invention processes the edges of the wrapping paper in the following sequence of operations.

First, the entire device is guided to a standby position of a metal strip coil wrapped with wrapping paper using a cart and a lifting platform. An elevating device provided at the bottom of the coil truck passes through the coil truck and adjusts the center position of the metal strip coil according to changes in the coil diameter.

If the wrapping paper is not stiff, it may cause swelling of the wrapping paper. Therefore, if necessary, the ear discharge is first corrected using the ear discharge correction mechanism and the trolley.

Next, the flap of the wrapping paper is pinched by the folding mechanism, and the expansion/contraction mechanism and the 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 mechanism is rotated by a predetermined angle by the drum rotating mechanism to fold the ears.

Ear pressing and tape application are performed by a separate tape application device that is on standby in the next process. If cycle time permits, it is preferable to incorporate a taping device into the packaging machine and continue to operate at the same location.

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

The coil 1 is placed on or unloaded from the coil truck 2 by an overhead crane (not shown).

The wrapping paper 3 of a predetermined width is wrapped around the outer circumference of the coil 1 by a paper wrapping device 7 (FIG. 2 03)). Next, the coil 1 is subjected to edge processing of the wrapping paper 3 by the wrapping device 10 of the present invention (FIG. 2 (0 to [F])).

Finally, the coil 1 is sent to a tape applicator 8, and the edges of the wrapping paper pushed into the outer side of the coil 1 are fixed with tape (FIG. 2 CF)).

The apparatus of the present invention is installed on both sides of the conveying line and starts working from both end faces of the coil 10 at the same time, or starts working from one side of the coil 10 sequentially.

Which one to select is determined as appropriate depending on work conditions and the like.

The width of the wrapping paper 30 must be at least larger than the width of the coil truck 2.

The apparatus of the present invention is an improved version of the folding plate mechanism 50 of the apparatus disclosed in Japanese Patent Application No. 59-137629, and other parts are not substantially changed. However, for convenience of explanation, portions that have not been improved will also be explained below.

In the present invention, the above-mentioned folding plate mechanism 50 is replaced by a folding mechanism 5.
Call it 0.

Embodiments 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 includes a cart unit 20, a support mechanism 30, an expansion/contraction mechanism 40, a folding mechanism 50. Folding operation mechanism 60, drum rotation mechanism 7
0. If necessary, it is made up of an ear droop correction mechanism 80.

As shown in FIGS. 3 and 4, the trolley unit 20 positions the folding mechanism 50 and the like at a predetermined work position, and also performs joint operations to perform a predetermined work.

In FIGS. 3 and 4, the cart unit 20 includes a cart 24 that is movable on a pair of guide rails 23 by means of a plurality of wheels 240 provided on both sides.

Note that the cart is 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 truck 24. One end of the hollow shaft 32 is fixed to the upper part of the support column 31, and the hollow shaft 32 is fixed to the top of the support column 31.
4 in a cantilevered manner parallel to the direction of movement. hollow shaft 3
Conventional end caps 321 are attached to both ends of 20.

As shown in FIGS. 4 and 6, the expansion/contraction mechanism 40 includes a drum 41, a screw shaft 42, a nut member 43, and a driving device 44.
It functions to move the nut members 43 at the same position in the radial direction of the drum 41 all at once in synchronization.

The drum 41 is made up of an outer ring 411, a central boss 412, and side frames 413.

Central boss 412 is rotatably attached to the free end of hollow shaft 32. Side frame 413 is central boss 412
The outer ring 4 extends radially from the outer ring 411 to the outer ring 411.
110 are arranged at predetermined pitches (18 degree intervals in this embodiment) in the circumferential direction.

The outer ring 411 is rotatably supported by a roller 72, which will be described later.

The screw shaft 42 extends radially between the central boss 412 and the outer ring 411 at the center of each side frame 413, 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 4110.

A radially inner end of each screw shaft 42 extends through and into the central boss 412.

A small bevel gear 421 is fixed to its tip,
It is engaged with a large bevel gear 441 which will be described later.

A radially outer end of one or more of the threaded shafts 42 extends 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 driving device 44 includes a dog bevel gear 441 and a motor 442.
It is made up of. Large bevel gear 441 is central boss 4
It is rotatably attached to a hollow shaft 32 within 12 . Dog bevel gear 441 engages each small bevel gear 421 as previously described. 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 along the screw shaft 42 in the radial direction of the outer ring 4110. 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 rotatably attached to the truck 24, and the other end is rotatably attached to the outer ring 411. The rollers 72 are rotatably attached to the trolley 24 in parallel at predetermined intervals, and rotatably support the outer ring 411.

The fluid pressure cylinder 71 functions to rotate the outer ring 411 by a predetermined angle θ (preferably two pitches of the circumferential pitch of the screw shaft 420).

As shown in FIGS. 4, 6, 8, and 9, the folding mechanism 50 includes a horizontal arm 51, a first folding roller unit 52, a folding plate 53, and a second folding roller. - Consists of unit 54, ear knob 55, and actuating member 56.

The folding mechanism 50 has the function of pinching the edges of the wrapping paper protruding from the metal band coil, folding them toward the end faces of the coil, and then folding down the peaks of the edges in the circumferential direction.

The horizontal arm 51 is fixed to the nut member 43 while extending in a direction perpendicular to the screw shaft 42, that is, in a horizontal direction. A first folding roller unit 52 is fixed to one end of the horizontal arm 51, and the other end passes through a moving frame 62, which will be described later, and is slidably engaged with the fixed frame 61 in the radial direction.

The first folding roller unit 52 is shown in FIGS.
As shown in detail in the figure, a T-shaped shaft 523 is attached to the support plate 521 by a compression helical spring 522 so as to be freely retractable. A brush roller 524 is attached. The brush roller 524 is
A flexible brush made of nylon, horse hair, etc. may be implanted around the outer periphery of the roller.

The second folding unit 54 has almost the same structure as the first L unit 52, but the difference is that the support lever 541 is rotatably attached to the support plate 521 of the first unit 52. do.

A T-shaped shaft 543 is attached to the support lever 541 using a compression helical spring 542 so as to be freely retractable.

A plurality of brush rollers 545 are attached to the vertical portion of the T-shaped shaft 543 so as to be rotatable independently of each other.

The folding plate 53 is rotatably attached to the lower end of the first unit 52 and is attached to the brush roller 545 using a compressed helical spring so as to be retractable. It is rotatably attached above the tip. The ear knob 55 is rotatably attached to the first unit 52 adjacent to the folding plate 53 below the tip of the first unit 52.

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

The second unit 54 is selectively used depending on the diameter of the metal band coil 1. For example, if the coil diameter is relatively large, it will be rotated to the position shown by the two-dot chain line in FIG.

The operating member 56 includes a fluid pressure cylinder 561 and a first connecting rod 562.
, second continuous lever 563, first continuous lever 562, second lever 565
, a first pinion 566, and a second pinion 567.

One end of the fluid pressure cylinder 561 is rotatably attached below the rear end of the support plate 521 of the first unit 52, and
The other end is rotatably attached to one end of the ear knob 55. For example, when the piston rod is pushed out in the direction of the arrow, the fluid pressure cylinder 561 rotates the ear knob 55 counterclockwise.

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 folding plate 53.

The other end of the lever 564 is fixed to a first pinion 566, and the first pinion 566 is rotatably attached to the support plate 521. The first pinion 566 is engaged with a first rack 64, which will be described later.

When the first pinion 566 is rotated counterclockwise, the 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 attached to the second unit 565.
It is rotatably attached to the other end of the support lever 541 of No. 4. The other end of the second lever 565 is fixed to a second pinion 567, and the second pinion 567 is rotatably attached to the support plate 521. 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, when the folding plate 53 and the support plate 541 are rotated to the maximum, the second unit 5
4 coincides with the tip of the first unit 52, and each brush roller 524, 545 is aligned in a line. This alignment brush roller is parallel to the coil end face.

The folding mechanism 60 is made up of a fixed frame 61, a movable frame 62, a hydraulic cylinder 63, a first rack 64, and a second rack 65, as shown in FIG. The folding operation mechanism 60 functions to rotate the folding plate 53, the first unit 52, and the second unit 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 twelfth 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, there are 20 folding mechanisms 50, as shown in FIG. 4, and they are provided in the expansion/contraction mechanism 40 at constant circumferential pitches. Each horizontal arm 51, each first rack 64, and each twenty-second rack 65 is engaged with a corresponding number of guides 611 and long grooves 621, respectively.

Depending on the quality of the wrapping paper, it may be 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, and a horizontal bar 8.
3. It is made up of 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 attached to the free end of a second hollow shaft 81 that protrudes from the front end of the hollow shaft 32 (on the right side in FIG. 7).
1 and fixed vertically. A horizontal bar 83 is fixed parallel to the shaft 81 at the tip 11C of the piston rod of the fluid pressure cylinder 82. By actuating the hydraulic cylinder 82, the horizontal bar 83 can be moved in the radial direction of the shaft 810.

A sprocket 84 is fixed to a free end of a second hollow shaft 81 that protrudes from the rear end of the hollow shaft 32 (left side in FIG. 7). Sprocket 84 is driven by a motor 85 fixed to the top of column 31.

When sprocket 84 is driven, horizontal bar 83 rotates about axis 81.

Conventional end caps 811 are attached to both ends of the second hollow shaft 81 .

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. Lifting platform 2
2 adjusts the center position of the device 1o in accordance with the change in coil diameter.

If the wrapping paper is not stiff, it may cause swelling of the wrapping paper. Therefore, if necessary, ear droop correction@kaku80
and the second trolley 24, the ear discharge is first corrected.

To perform this correction work, first, the folding mechanism 50 is retracted to the maximum radius position of the drum 41, and the horizontal bar 83 is retracted to the minimum radius position of the drum 41. Then the second
The cart 24 is advanced and the horizontal bar 83 is inserted inside the selvage of the wrapping paper 3. The horizontal bar 83 is raised to the outer diameter position of the coil 1 and made to go around the inside of the ear. This operation corrects normal ear discharge. After correction, the horizontal bar 83 is lowered and the second truck 24 is moved backward.

Next, the folding mechanism 50 pinches the edges of the wrapping paper 3, 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 mechanism 5 is moved by the drum rotating mechanism 70.
Rotate o by a predetermined angle θ to perform ear-folding.

First, as shown in FIG. 8, the folding plate 53 is held in a horizontal position, and the expansion/contraction mechanism 4o is operated so that the folding plate 53 is positioned slightly outside the radial position of the ear.

The ears are clamped between the ear knobs 55 and the 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.
advance. Preferably, this linked operation is controlled so that the ear tabs 55 and the folding plates 53 draw an arcuate trajectory. Further, the ear knob 55 and the folding plate 53 sequentially rotate counterclockwise on an arcuate trajectory. This rotational movement is controlled by the actuation member 56 and the folding actuation 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 mechanism 50 in the circumferential direction of the drum 41 by a predetermined angle θ.

At this time, the folded peaks of the ears are folded down. If the coil diameter is large, a second unit 54 is also used.

Folded plate 53, first. Due to the elastically displaceable support and flexible brushes of the second unit 52,54, folding of the ears is carried out smoothly and effortlessly. Therefore, ear creases and tears do not occur. Since the center height of the metal strip coil and the packaging machine is adjusted by using a fluid cylinder provided at the bottom of the coil truck, the lifting device for the packaging machine can be omitted.

Ear pressing and tape application are performed by another tape application device #8 (FIG. 1) which is waiting in the next process.

(G) Effects According to the metal band coil packaging apparatus of the present invention, the following effects can be obtained.

■ It is possible to automatically and quickly package metal strip coils of various sizes.

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

■ When packaging starts from both end faces of the coil at the same time, the lifting device can be made more compact and the number of units can be limited, resulting in lower equipment costs.

■ No creases or tears occur during folding, and the edges of the wrapping paper are sealed perfectly.

[Brief explanation of drawings]

FIG. 1 is a plan view schematically showing a part 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. Third
The figure is a side view of the device of the present invention. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. Fifth
The figure is a partial sectional view taken along line v-v 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, showing another modification of the device of the invention. 8th
The figure is an enlarged side view of the folding mechanism. Figure 9 shows the folding roller
Enlarged side view of the unit. FIG. 10 is a schematic diagram showing the elevating device mechanism. 10: Packaging device 20 Two-carriage unit 30: Support mechanism 40: Expansion/contraction mechanism 50: Folding mechanism
60 = Folding operation mechanism 70 Ni drum rotation model 8
0: Ear drip correction mechanism Figure 9

Claims (1)

[Claims] A cart is placed on a guide rail so as to be movable forward and backward with respect to the end face of a metal strip coil wrapped with wrapping paper and placed at a predetermined position, and a first shaft is set parallel to the moving direction of the cart. A support mechanism supported on the cart in a portable manner, and a plurality of screw shafts radially attached at a predetermined pitch to a drum rotatably attached to the free end of the first shaft, and engaged with the screw shafts. an expansion/contraction mechanism that moves the nut members all at once in the same radial direction on the drum in synchronization; and an expansion/contraction mechanism that is attached to each of the nut members and that pinches the edges of the wrapping paper and bends it toward the end surface of the metal band coil. a folding mechanism comprising an ear tab, a folding plate held elastically displaceably, and a folding roller unit elastically displacing a plurality of mutually independently rotatable brush rollers; a folding operation mechanism rotatably attached to an intermediate portion and operating the folding mechanism; and the second folding mechanism.
A packaging device for metal band coils, comprising a drum rotation mechanism mounted on a cart and rotating the expansion/contraction mechanism by a predetermined angle about the first axis.