JPH0120925B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an uncoiler for feeding coil material for press materials to the downstream side of a press processing line.

Generally, as a material for press working, a coil material made by winding a band-shaped metal plate of a predetermined width in a spiral shape is used. When performing various types of press processing using this coiled material, it is necessary to unwind the coiled material and feed it to the press intermittently.

For this reason, conventionally, there are two cases. For example, as shown in FIG. 1, when uncoiling the coil material 2 attached to the mandrel reel 1, it is necessary to , Loosen the strip-shaped plate material in advance so as to form a loop 2a downward, and while maintaining this loop 2a at all times, lift the feeding end 2b to a height approximately equal to the axial center position of the mandrel reel 1, and, A separate device called a leveler feed (not shown) installed downstream of the press line is used to feed material into the press intermittently. On the other hand, in the case of Fig. 2, the coil material 12 attached to the mandrel reel 11, which rotates clockwise as indicated by arrow B around the horizontal axis, is loosened downward so as to form a loop 12a on the outermost periphery of the coil material 12, and then The portion 12b on the extraction end side is stretched beyond the upper part of the coil material 12, and the material is taken out in the stretched direction, so that the outer surface A, which is the quality assurance surface of the coil material 12, is on the upper side, and the non-quality assurance surface is The material can be fed to a press machine (not shown) with the inner surface B of the barrel facing downward.

By the way, when there is a distinction between these coil materials, such as those with a double-sided warranty where the quality is guaranteed on both the inside and outside surfaces, and those with a single-sided warranty where the quality is guaranteed only on the bottom side, especially the coil materials with a single-sided warranty. According to the conventional coil material feeding shown in Fig. 1, when using a , non-quality assurance side) is on the upper side,
It will be supplied to the press machine.

However, according to the conventional feeding method, the quality assurance surface A is on the lower side as in the case of Fig. 1 above, so
When being fed onto a press mold, there is a possibility that it will rub against the mold and cause a flaw on its guarantee surface A, and in the case of a press product where the quality of that surface is a matter of concern, there is a risk of inconvenience. It was hot. For this reason, in such cases, either a coil material with double-sided guarantee was used, or the material was supplied by rewinding the coil material as shown in Figure 2, but the former method The former has the problem of high material costs, and the latter has troublesome work.

This invention was made in view of the above circumstances,
When handling coil material with a single-sided guarantee that guarantees the quality of either the inner or outer surface, you can always keep the one-sided guaranteed side on top to avoid scratches on the quality-guaranteed side of the coil material. The purpose is to provide uncoiler.

Further, the gist of the present invention is that a coil material is attached to a mandrel reel that is provided in the uncoiler body and rotates in forward and reverse directions around a horizontal axis, and that an axis parallel to the mandrel reel is connected to a side opposite to the feeding side of the coil material. The twin prongs are provided on one side of the uncoiler body, curved along the upper and lower parts of the coil material, and rotatable about the shaft as a fulcrum, approaching or separating from either of the upper and lower parts. Upper and lower loop guides formed in a shape are provided, and guide rolls are provided on these loop guides to feed and guide the coil material unraveled from the upper part side or the lower part side to the downstream side of the press processing line, Each of the loop guides is selectively rotated according to the unraveling direction of the coil material mounted on the mandrel reel so that the quality assurance surface of the coil material is always on the upper side. .

An embodiment of the present invention will be described below with reference to FIG.

In the figure, reference numeral 11 denotes a mandrel reel that rotates around a horizontal axis, and its rotation direction is switched between the direction of arrow A and the direction of arrow B by a predetermined switching device. In the figure, a coil material 12 wound clockwise is attached to a mandrel 11. Also, an uncoiler main body 13 equipped with this mandrel reel 11
On the side opposite to the coil material feeding side (the side where the leveler feed L is provided), there is a shaft 16 located in the uncoiler body 13 in parallel with the mandrel reel 11 and at approximately the same height as the axis of the mandrel reel 11. is provided. On this shaft 16, upper and lower loop guides 14 and 15, which are formed in a twin-pronged shape and are rotatable about this shaft as a fulcrum, are attached to the upper and lower loop guides 14 and 15, which are formed in a twin-pronged shape and move toward or away from either the upper or lower part of the coil material 12. It is worn.
The loop guide 14 is used for coil material such as the conventional example shown in FIG. 2, and the loop guide 15 is used for coil material such as the conventional example shown in FIG. These loop guides 14 and 15 are curved in an arc shape along the outer peripheries of the upper and lower parts of the coil material 12, and a plurality of guide rollers 17 are attached along the arcs. Each is an upper part of the coil material 12,
It is oriented to cover the lower chamber.

On the other hand, the coil material 1 fed out from the uncoiler U
A loop presser 1 equipped with a roller 18 at the tip is installed on the inlet side of the leveler feed L through which the sheet is passed through and straightened.
9 is provided. This loop presser 19 is attached to the casing 20 of the leveler feed L so as to be freely rotatable in the vertical direction. By rotating the arm portion of the loop presser 19 using a cylinder (not shown), the roller 18 can be moved toward or away from the outer peripheral surface of the coil material 12.

In addition, a coil presser 2 equipped with a roller 21 at the tip
2 is arranged on the feeding side of the uncoiler main body 13 located at the same height as the axis of the mandrel reel 11, so that the roller 21 can press the outer peripheral surface of the coil material 12. That is, the coil presser 22 is attached to the uncoiler body 13 so as to be able to rotate from a vertical position to the left and right, and
3, the roller 21 is pressed against the coil material 12 from the side by rotating the arm portion.

Regarding leveler feed L,
This includes an entrance pinch roll 24, a straightening roll 25,
It is composed of an exit pinch roll 26,
To remove the bending tendency of the material taken out from the coil material 12.

Further, in the front stage of this leveler feed L, an arc-shaped guide 2 including a plurality of guide rolls 27 is provided.
8 and a width guide 29 are provided. Further, a press machine equipped with upper and lower molds 30 and 31 is arranged at the downstream end of the line.

Next, the operation of the uncoiler having such a configuration will be explained.

As shown in the figure, coil materials 12 whose outer surface is the quality assurance surface are selected according to the direction in which the ends of the coils are fed out, and set on the mandrel arm 11. That is, when the coil material 12 is fed out in the direction of arrow B and the fed end of the coil material 12 is fed and set from above to the leveler feed L, the coil material 1
Loosen the outermost periphery of 2 downward to form a loop 121a, and the part 12b on the feeding end side beyond that,
The coil material 12 is placed on the guide roller 17 of the loop guide 14 close to the upper part of the upper part of the coil material 12, stretched to exceed the coil material 12, and the stretched portion is pressed by the roller 18 of the loop presser 19 to form the loop. 12a can be maintained, and
The feeding end portion is passed through the width guide 29 and guided to the leveler feed L. In this case, coil presser 2
The second roller 21 presses the sides of the coil material 12 to prevent the coil material 12 from unraveling excessively.
Subsequently, in this state, the mandrel reel 11 is rotated in the direction of arrow B. Then, coil material 1
2 is unraveled in a stable state, fed out and supplied to the end of the line.

In this case, the coil material 12 is taken out with the outer surface side, which is the quality assurance surface, facing upward. Note that the roller 21 of the coil presser 22 moves as the diameter of the coil material 12 decreases.

On the other hand, as shown by the imaginary line in the figure, the coil material 12 is installed in the opposite direction to that described above, that is, the coil material 12 is fed out counterclockwise so that the inner surface thereof becomes the quality assurance surface. Then, the coil material 12 is supported and guided from below by the loop guide 15 located at the lower part of the coil material 12, and a loop 12a' is formed below, and the taken-out end is placed on the upper surface of the guide 28 to feed the leveler feed. Lead to L. In this case, the coil material 12
The outer side, which is the non-guaranteed side, is the bottom side.

As described above, the uncoiler of the present invention shown in FIG. Since it can be carried out with one machine for each case,
It can be selected as appropriate depending on the type of press product, and there is no need to rewind the coil as in the past.

As is clear from the above, according to the present invention, a coil material is attached to a mandrel reel that is provided on the uncoiler body and rotates forward and backward around a horizontal axis, and an axis parallel to the mandrel reel is attached to the mandrel reel. It is provided on one side of the uncoiler body on the side opposite to the feeding side, curves along the upper and lower parts of the coil material, and is deflected so as to be rotatable about the above-mentioned shaft as a fulcrum to either the upper or lower part. Upper and lower loop guides formed in a twin-pronged shape that are close to or separate from each other are provided, and the coil material unraveled from the upper or lower part side is guided to the downstream side of the press processing line by these loop guides. Each of the loop guides is selectively rotated according to the unraveling direction of the coil material mounted on the mandrel reel so that the quality assurance surface of the coil material always faces upward. Therefore, a single uncoiler can handle coil materials that have either the quality assurance surface, regardless of whether they are inside or outside, and the quality assurance surface of the coil material is the bottom surface, which prevents scratches caused by molds, etc. Pressing can be performed with confidence without any risks, and the quality of pressed products can be guaranteed.

[Brief explanation of drawings]

1 and 2 are schematic side views for explaining conventional uncoiling of coil material, and FIG. 3 is a side view showing an example of an uncoiler in which the uncoiler of the present invention is applied to a press working line. 1... Uncoiler, 11... Mandrel arm, 1
2...Coil material, 14, 15...Loop guide, 16
...shaft, 17...guide roller.

Claims (1)

[Claims] 1. Attach the coil material to a mandrel reel that is provided on the uncoiler body and rotates forward and backward around a horizontal axis, and attach the shaft parallel to the mandrel reel to one side of the uncoiler body opposite to the side where the coil material is fed out. The upper and lower portions are curved along the upper and lower portions of the coil material, and are deflected so as to be rotatable about the above-mentioned axis as a fulcrum, and are formed in a bifurcated shape that approaches or separates from either the upper or lower portions. These loop guides are equipped with guide rolls that feed and guide the coil material released from the upper or lower section side to the downstream side of the press processing line, thereby ensuring the quality of the coil material. An uncoiler characterized in that each of the loop guides is selectively rotated according to the direction in which the coil material attached to the mandrel reel is uncoiled so that the loop guide is always on the upper side.