JPH03193213A - Take-out method for coil wire - Google Patents

Abstract

PURPOSE:To very smoothly take out the coil wire by continuously taking out the coil wire from the superposed state on the un-coiler under preliminarily connected state of successively joining the inside end of plural coil wires with the exit end of the adjacent coil wires in order. CONSTITUTION:The coil wires are superposed in required steps on the palette 12 under the state of joining coils each other inserting the spacers 10 between them, and are composed as one lot. The take-out operation is executed to every wire coils 1 - 6 in the same direction from outside to inside. Because the direction of the coils 1 - 6 are in the same direction of wound direction slitted state as it is, even if the position of taking out coil changes from up to down, the each coil taking out are executed smoothly over the whole lot without specially reconstructing the turn table 13 with one side rotation of the turn table 13. Further, the spacers 10 housing the joined part are inserted between each coils 1 - 6, so the generation of flaw or strain does not exit substantially.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for taking out coil strips, and in particular, a spacer is interposed between a plurality of horizontally placed coils to separate the inner ends (outer ends) of the adjacent coils. ) and their outer ends (inner ends) are stacked one after the other with their joints connected in sequence, thereby providing a very convenient and efficient method for successively removing strips.

In particular, the present invention provides a method for taking out a plurality of narrow metal strips sheared by a slitter into a coil and then feeding the strips into a press machine etc. without causing creases, scratches, etc. using an uncoiler. It is suitably used as

In addition, it can also be usefully used to take out strip coils of flexible materials such as plastic and paper.

In general, rolled wide metal strips such as rolled copper products are sheared by a slitter into narrow slit strips of the product size, depending on the application, and are wound up into a disk shape from each sheared end. A narrow slit strip is wound to a certain length to form a coil (
(also known as pancakes), these coils are
It is uncoiled from a rotary uncoiling device (uncoiler 1) to a processing equipment such as a press machine for the next processing process. It is important in

Conventionally, as one-type uncoilers for metal strips, the following have been typically implemented: 1) Vertical uncoiler 1-type 2) Horizontal uncoiler 1-type 2) Traverse type.

The vertical uncoiler type is a method in which the coils are set one by one on the uncoiler vertically like a movie reel, and the coil strips are taken out by rotating the coils. In this method, after using one coil, the next coil must be set one by one, so the worker must adjust the coils, which are normally stacked horizontally on a pallet, one by one to a vertical position. It took a long time to set the machine, and the operating rate of processing equipment such as press machines was extremely low. Also, the work of raising and setting such a heavy coil from a horizontal position was dangerous. It is necessary to stop the operation of the processing equipment and set the starting end of the coil in the processing equipment for each coil, which leads to a decrease in the operation rate of the processing equipment, and makes it easy to damage a part of the equipment. The processing equipment could only process the length of the coil, and there was a limit to the length of the product. In order to continuously feed long metal coil strips into a press machine, etc., it is necessary to create a large diameter coil by welding several coil strips. is difficult and difficult to handle;
Naturally, there were restrictions on the coil length.

Alternatively, it has been considered to weld the end of a coil in-situ to the beginning of the next coil as it nears the end of unwinding, which also reduces processing equipment availability. This resulted in a significant decline.

The horizontal stacking uncoiler type uncoilers the coils that are stacked horizontally on a pallet (frame).
This method involves placing the coil on a turntable and taking out the coils one by one from the outside (or inside) from top to bottom while rotating the turntable. This method differs from the previous vertical method in that the coils, which are stacked horizontally on a pallet, can be placed on the turntable of the uncoiler with the entire pallet, which greatly improves work efficiency. Basically, the drawbacks of the vertical system still remained. In other words, (1) stop the processing device each time the coil is finished unwinding and set the starting end of the next coil in the device, or
As the unwinding of a coil neared its end, it was necessary to weld its end in situ to the beginning of the next coil below it.

This resulted in a significant drop in the operating rate of processing equipment.

The same applies to other drawbacks.

The last traverse method involves welding slit strips to create a long strip, which is then wound continuously on a reel like a spool, for example, from the left end to the right end and then from the right end to the left end, and then the reel is rotated. This is a method in which one reel is unwound while moving.

Although this method has the advantage of being able to handle continuous lengths of strips, it has the same drawbacks as the method: (a) The work of winding the strips around the reel is troublesome and time-consuming. In addition, large-scale equipment for this purpose is required.

(b) If the conditions for winding the strip around the reel are poor, the strip may shift during transportation, causing scratches on the surface or making it impossible to take out the strip.

(c) Since the edges of the strip wound on top of the strip always overlap, minute scratches occur. Therefore, it cannot be used in applications with strict surface requirements.

(:) When turning the strip at the end of the reel, the strip must be bent, which may leave a bend in the strip.

(n) An expensive reel for winding the strip is required.

(f) Transporting and handling heavy reels is troublesome.

Additionally, a special reel stand is required for transporting the cylindrical reel.

(g) Because the shape of the reel is fixed, only a certain weight can be wound, and the remaining product that cannot be wound must be discarded.

As explained above, the three systems that have been implemented in the past have inherent drawbacks, and these systems cannot meet the requirements of modern uncoilers. Recently, with the rapid development of electronic devices, lead frames,
There is an increasing demand for narrow strips that require precision, such as film carriers and printed circuit boards. Minimize interruptions in equipment operation.

2. The ability to continuously feed strips of arbitrarily set length to processing equipment; 3. Surface scratches on the strips to meet strict product quality requirements;
4. It does not require special tools or jigs like those found in the traverse method. 5. It has good workability. 6. There is no increase in cost burden. We are now forced to consider a new coil extraction method that satisfies the requirements.

Therefore, an object of the present invention is to develop a method for extracting coil strips that satisfies these requirements and is applicable to the handling of precision products such as lead frames.

The inventors of the present invention have conducted repeated studies to address the above-mentioned problems, and have developed a continuous system that takes advantage of the good workability of the conventional horizontally stacked uncoiler single system as much as possible. Based on the judgment that a transformational approach was the best approach, Mukai conducted repeated trials to realize it. As a result, a spacer is inserted between the horizontally placed coils to create a space for accommodating the joint, and multiple coils are connected in advance by placing the inner end (outer end) and outer end (inner end) of the adjacent coils in order. It was found that the coil strips could be taken out very smoothly by continuously unwinding the coil strips from the stacked state on the uncoiler in the bonded state, and the above problems were successfully solved at once.

Based on the above knowledge, the present invention provides a plurality of horizontally placed strip-wound coils, a spacer is interposed between the coils, and the inner end and the outer end of the adjacent coils or the outer end and the inner end are separated. are sequentially bonded and stacked and placed on an uncoiler, and while rotating the uncoiler in one direction, the coil is continuously threaded from the upper coil to the lower coil via the bonded portion. A method for taking out a coil strip is provided.

115Ω 盈I Referring to FIG. 1, the rolled wide strips 40 are formed by the slitter as shown by the dotted lines (shown here as six strips).
It is sheared into narrow slit strips 81-6. The front ends of each slit strip are shown as A1-A6, and the rear ends are shown as B1-B6, respectively.

As these slit strips are sheared, they are wound up to form coils 1-6 as shown on the right.

Each coil has a front end A1 to A6 inside and a rear end B.
Here, it is wound clockwise from the inside to the outside, with 1 to B6 being the outside.

To provide a supplementary explanation of the problems with the conventional one-sided horizontal stacking uncoiler system, in the conventional one-sided horizontal stacking uncoiler system, coils 1 to 6 stacked horizontally on a pallet (frame) are uncoiled together with the pallet. - Place it on the turntable,
While rotating the turntable, the coils were taken out one coil at a time from the outside to the inside, or from the inside to the outside, and from top to bottom. When the processing of coil 1 is completed, the processing equipment must be stopped and the outer end or inner end of the next coil 2 must be set in the processing equipment. It took a lot of time to set the mold into the mold, which not only caused a significant drop in the operating rate of the processing equipment, but also caused mold breakage.

According to the present invention, coils 1 to 6 are inside (outside) the coils.
With the terminals and the outer (inner) terminals welded in order in advance, and with a spacer between each coil, the material,
They are stacked on pallets, especially in such a way that the joints are not deformed.

FIG. 2 is an explanatory diagram showing a state in which the coils are joined according to the present invention, and the spacers between the coils are omitted for clarity. The outer end B1 of the coil 1 is the extraction end. The inner end A1 of the coil 1 is joined to the outer end B2 of the next coil 2 by welding or the like. The inner end A2 of the next coil 2 is joined to the outer end B3 of the next coil 3. In this way, the inner ends and outer ends of the coils 1 to 6 are joined in order. When the strips are taken out from the inner ends of the coils, the outer ends and inner ends of the coils 1 to 6 are joined in order, contrary to the previous method.

In this way, a desired number of coils are stacked on the pallet 12 with the coils being joined together with a spacer in between to form 10 coils. After the previous lot has been taken out, the next waiting lot, which has been joined together, is placed on the turntable 13 of the uncoiler along with its pallet.

The extraction operation is performed for all coils 1 to 6 in the same direction from the outside (inside) to the inside (outside) side. Coils 1 to 6 are wound in the same direction as the slit, so even if the coil to be unwound changes from top to bottom, the turntable rotates in one direction, and each coil can be wound in one direction without modifying the turntable. The entire lot can be taken out smoothly, and since there is a spacer between each coil to accommodate the joint, there is virtually no occurrence of scratches or distortion.

In Figure 2, the spacer between the coils is omitted for the sake of explanation, but the spacer may be any material that does not undergo plastic deformation or damage between the upper and lower coils. The form of the bacon is not particularly limited. In practice,
An example of a split spacer that is easy to handle is shown in Figure 3. This spacer 10 is inserted in a U-shape between the coils, and is divided into three parts, so that it is easy to handle when welding the coils and when taking out the coils. The U-shaped opening is suitable for accommodating the joint between the coils.

Figure 4 shows a coil 1 with a spacer 10 interposed therebetween.
A lot consisting of 6 to 1 uncoiler per 12 pallets
1 is placed on the turntable 13, and the taking-out operation is started. The taken-out end of the coil 1 is set in processing equipment 20, which is, for example, a press machine, via guide rolls. The turntable is rotated by a motor (not shown) at a speed that corresponds to the processing speed of the processing equipment. Thus, as explained above, the coils can be unwound one after the other continuously and smoothly without requiring interruption of the processing equipment.

However, since there is a difference between the coil feeding speed and the processing speed, and the circumferential speed changes as the coil is unwound, sagging of the strip or excessive tension of the strip may occur. Therefore, it is necessary to adjust the delivery speed of the strip while applying pack tension to the coil upstream of the processing equipment.

Several such devices have been used in the past, such as using dancer rolls, and any of them could be used here.

Although this device itself is not related to the present invention, an example thereof shown in FIG. 4 (see Japanese Patent Application Laid-Open No. 60-61469 by the applicant of the present invention) will be described. A column supporting an angle detector 15 is installed on one side of the uncoiler 11, and a dancer roller 17 is attached to the front end of a rod 16 extending forward from the angle detector 15, which faces perpendicularly to the rod. Further, an upper limit switch 18 and a lower limit switch 19 are installed by separate supports at positions where they engage with the rod. In a steady state, the dancer roller 17 is synchronized at the height of the set speed position shown in the upper side of the drawing. In this way, the strip becomes slack (supplied to the processing device) due to back tension by the dancer roller. As the winding diameter of the coil becomes smaller, the circumferential speed becomes slower, so the dancer roller 17 is gradually lifted. Because they are linked, this movement is converted into an electrical signal and increases the speed of the motor.The dancer roller stops its position when it synchronizes with the processing speed of the processing equipment.On the contrary, when the processing speed is slow (
, when there is slack in the strip, the dancer roller 17 is lowered as shown below and the motor is decelerated accordingly via the angle detector. For safety, an upper limit switch 18 and a lower limit switch 19 set the movement range of the dancer rollers.

In this way, by using the coil strip removal method of the present invention and the above-mentioned strip adjustment device, the coil strips are continuously and smoothly sent out to the processing equipment 20 throughout the entire 10 tons.

I Mamebe Geki 1 With the rapid development of electronic devices, coils with excellent continuity and workability meet the increasing demand for narrow strips that require precision such as lead frames and printed circuit boards. We succeeded in developing a method for extracting strips. Specifically, the present invention provides the following benefits: (1) It becomes possible to take out the coil strip continuously without causing damage or distortion.

(2) There is no need to interrupt the operation of processing equipment.

(3) There is no need for the special reel required for the traverse method, and the same packaging as conventional coils can be used.

(4) No reel stand is required, and round-trip transportation costs are significantly reduced.

(5) The lot weight of one pallet can be arbitrarily set for each coil.

(6) Once the starting end of the first coil is set in the processing equipment, the operator does not have to touch the strip until one pallet is used, which is safe.

(7) There is no particular cost increase.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram illustrating the process from forming a wide strip to forming a coil strip. FIG. 2 is a simplified explanatory diagram showing a state in which the coil strips are joined according to the present invention. FIG. 3 is a perspective view showing the arrangement of spacers interposed between two upper and lower coils. FIG. 4 is a perspective view illustrating the removal of a coil strip according to the invention for delivery to processing equipment. 40: Rolled wide width strips 81 to S6: Slit strips 1 to 6: Coils A1 to A2 formed after slitting: Strip front end B1-B2: Strip rear end lO varnish spacer 11: Uncoiler 12: Pallet 13: Turntable 15: Angle detector 16: Rod 17: Dancer roll 18.19: Upper and lower limit switch 20: Processing equipment Fig. 2 Fig. 3

Claims (1)

[Claims] 1) A plurality of horizontally placed strip-wound coils are stacked by interposing a spacer between the coils and sequentially joining the inner and outer ends of adjacent coils or the outer and inner ends of the adjacent coils. The coil strip is placed on an uncoiler in a state in which the coil is bent, and while the uncoiler is rotated in one direction, the coil strips are continuously taken out from the upper coil to the lower coil via the joint part. Method.