JP2909679B2 - Roll type material feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for feeding a strip material by a pair of rolls, and can be used, for example, to supply a coil material to be pressed to a press machine.

[0002]

2. Description of the Related Art As a device for supplying a band material such as a coil material to be pressed to a press machine, a device using a pair of rolls and a device using a pair of fan-shaped segments (Japanese Utility Model Publication No. 63-44196) are known. Are known.

[0003] In a conventional apparatus using a pair of rolls, one of these rolls for pressing a band-shaped material is used as a drive roll,
The other is a driven roll, and these rolls are provided with gears that mesh with each other. By these gears, the rotation of the driving roll is transmitted to the driven roll, and the rotation of both rolls sends the strip material to a press machine or the like.

In a conventional apparatus using a pair of fan-shaped segments, one of these segments for sandwiching the band-shaped material is used as a drive segment, the other is used as a driven segment, and the drive segment is made reciprocally swingable by swinging means. One end of a connecting rod is connected to the segment, and the other end of the connecting rod is connected to a slider that is movable in the feed direction of the coil material. Oscillation of the drive segment by the oscillating means causes the driven segment to oscillate via the connecting rod and the slider, and the oscillating of these segments causes the belt-shaped material to be sent to a press machine or the like. After one of the pair of segments has moved away from the strip material and the pinching of the strip material by these segments has been released, both segments return rocking, and then these segments again pinch the strip material.

[0005]

In the conventional apparatus using a pair of rolls, the transmission of rotation from the driving roll to the driven roll is performed by gears provided on these rolls.
When the thickness of the band material is changed and the distance between the pair of rolls changes, the gears do not mesh with each other in a pitch circle, and as a result, there is a problem that backlash occurs and the band material cannot be fed as predetermined. .

Further, in the conventional apparatus using a pair of fan-shaped segments, the pair of segments is reciprocated and oscillated while repeating the pressing (clamping) and unclamping (unclamping) of the band-shaped material, thereby feeding the band-shaped material. There has been a problem that a grip means for fixing the band-shaped material at the time of releasing the clamping pressure is required, and it is impossible to continuously feed the band-shaped material and to feed it in a long dimension.

[0007] An object of the present invention is to enable the feeding of a strip-shaped material such as a coil material to be carried out in a predetermined manner even if the thickness of the material is changed. To provide a roll-type material feeding device.

[0008]

An apparatus according to the present invention has a pair of rolls, one of which is connected to a rotary drive means, and a band-shaped member such as a coil material is pressed by these rolls. At both ends, a crank mechanism is provided in which the crank pin is eccentric from the center axis of the roll, and one end of a connecting rod is fitted to the crank pin of the crank mechanism provided at one end on the same side of both rolls. The other ends of these connecting rods are connected to a first slider which is movable in the feeding direction of the band-shaped material, and a connecting rod is connected to a crank pin of a crank mechanism provided at the other end of both rolls. The other end of these connecting rods is connected to a second slider that is movable in the feeding direction of the band-shaped material, and the crank mechanism at one end of both rolls is connected to the second slider. It is characterized in that the square angular phase of the crank mechanism at the end of the are different.

[0009]

When one of the rolls connected to the rotary drive means is rotated by this means, the first and second sliders move via the crank mechanism and the connecting rod, and this movement is performed via the connecting rod and the crank mechanism on the other side. The belt-shaped material is transmitted as a rotational motion to the rolls, and the rotation of both rolls feeds the strip material. When the rotation of one roll by the rotation driving means starts, even if one of the crank mechanisms provided at both ends of the other roll is at the dead center position with respect to the connecting rod, it is provided at both ends of this roll. The rolls are reliably rotated by the driving force transmitted from the other crank mechanism because the different crank phases have different angular phases.
Therefore, the feeding of the belt-shaped material is performed as predetermined.

[0010]

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

FIG. 1 is a perspective view showing a main part of a feeder according to the present embodiment. Of the pair of upper and lower rolls, the lower roll 1 is a driving roll and the upper roll is a driven roll 2. The center axis 3 of the drive roll 1 is provided at both ends of the drive roll 1.
The first and second crank mechanisms 4 and 5 are fixedly mounted on the driven roll 2.
Third and fourth crank mechanisms 7 and 8 are provided. The first to fourth crank mechanisms 4, 5, 7, 8 are provided with a pair of crank arms 9 and a crank pin 1, which is bridged between the crank arms 9 and eccentric from the center axes 3, 6.
0. Each crank pin 10 has
One end 11A to 14A of the fourth connecting rod 11 to 14 is fitted, and the crank pin 10 of the first and third crank mechanisms 4 and 7 provided at one end on the same side of the driving roll 1 and the driven roll 2 Have first and third connecting rods 11 and 13
Of the second and fourth crank mechanisms 5 and 8 provided at the other ends of the driving roll 1 and the driven roll 2, respectively. One ends 12A and 14A of the pads 12 and 14 are connected.

The first to fourth connecting rods 11 to 14 are arranged as shown in FIG.
As shown in the figure, the coil material 15 which is a strip-shaped material fed by the driving roll 1 and the driven roll 2 extends in the feeding direction.
First and second sliders 1 movable in the feed direction
7 and 18 are arranged, and these sliders 17 and 1 are arranged.
8 are provided on both sides of the coil material 15. 1st, 3rd
The other ends 11B and 13B of the connecting rods 11 and 13 (only 13B is shown in the drawing) are connected to the shaft 1 of the first slider 17.
9, the other ends 12B and 14B of the second and fourth connecting rods 12 and 14 (only 14B is shown in the drawing) rotate about the shaft 20 of the second slider 18. They are freely fitted. As a result, the driving rod 1 and the driven roll 2 are connected to the first and second crank mechanisms 4 and 5, the first and second connecting rods 11 and 12, the first and second sliders 17 and 1, respectively.
8, the third and fourth connecting rods 13 and 14 and the third and fourth crank mechanisms 7 and 8 are connected.

In the above description, the first and second crank mechanisms 4 and 5 at both ends of the drive roll 1 have an angular phase different by θ in the rotation direction of the drive roll 1, and the first and second crank mechanisms 4 and 5 have both ends at the both ends of the driven roll 2. Third and fourth crank mechanisms 7, 8
Also, the angular phase differs by θ in the rotation direction of the driven roll 2. θ is preferably in the range of 60 degrees to 120 degrees. The angular phases of the first and third crank mechanisms 4 and 7 are the same in the rotation direction of the driving roll 1 and the driven roll 2, and the angular phases of the second and fourth crank mechanisms 5 and 8 are also the same. The same is true in the rotation direction of the roll 2.

As shown in FIG. 3, a large-diameter gear 21 is fixedly mounted on the center shaft 3 of the driving roll 1, and the small-diameter gear 2 is
2 are engaged. A driving force from a driving source such as a motor is transmitted to the gear 22. For this reason, the large-diameter gear 21, the small-diameter gear 22, and the like constitute rotation driving means 23 for rotating the driving roll 1.

The center axis 6 of the driven roll 2 is
The slider 24 is rotatably supported by the slide member 4 and is movable up and down while being guided by a pair of left and right guide members 25 and 26. A downward piston rod 27A of an air cylinder 27 is connected to the slider 24, and the driven roll 2 is constantly urged downward by the air pressure of the air cylinder 27, that is, toward the drive roll 1. For this reason, the air cylinder 27 connects the driven roll 2 to the drive roll 1.
The urging means 28 for urging the elastic force to the side is constituted.

Next, the operation will be described. Coil material 15
Is driven from an uncoiler (not shown),
And the driven roll 2, and the driven roll 2 nips the coil 15 together with the driving roll 1 by the air pressure of the air cylinder 27. The small-diameter gear 2 is driven by the driving force from the driving source.
When 2 rotates, the drive roll 1 rotates via the large-diameter gear 21. When the drive roll 1 rotates, the first and second sliders 17 and 18 move while being guided by the guide member 16 via the first and second crank mechanisms 4 and 5 and the first and second connecting rods 11 and 12. , The third and fourth
Connecting rods 13, 14, third and fourth crank mechanisms 7, 8
, The driven roll 2 rotates. For this reason, the coil material 15 pinched by the driving roll 1 and the driven roll 2 is sent to the press machine side.

In the above, when the drive roll 1 is continuously rotated, the coil material 15 is continuously fed.
When the drive roll 1 is rotated by a large angle, the coil material 1
A long feed of 5 is performed. Further, when the drive roll 1 is rotated by a small angle, the short feed of the coil material 15 is performed. Therefore, according to the present embodiment, the feed length of the coil material 15 can be set arbitrarily.

Further, even if the coil member 15 is changed to one having a different plate thickness, and thus the height position of the driven roll 2 with respect to the driving roll 1 changes, the first and third connecting rods 1 are not changed.
1, 13 and the second and fourth connecting rods 12, 1
The rotation of the drive roll 1 is transmitted to the driven roll 2 in the same manner as described above only by changing the opening angle of the coil 4, so that the coil material 15 can be fed in a predetermined manner.

In the above, when the rotation of the driving roll 1 starts, when the third crank mechanism 7 of the driven roll 2 is at the dead center position A with respect to the third connecting rod 13, that is, when the third crank mechanism 7 And the third connecting rod 13 may overlap with each other. At this time, the driven roll 2 may rotate in both the clockwise direction and the counterclockwise direction in FIG. 2 by the driving force transmitted from the third connecting rod 13, and if it rotates clockwise in FIG. Cannot be sent. However, in the present embodiment, the fourth crank mechanism 8 provided on the driven roll 2 together with the third crank mechanism 7 has an angular phase different from the third crank mechanism 7 by θ.
Is at the dead center position A, the fourth crank mechanism 8 is not at the dead center position.
The driving force transmitted from the fourth crank mechanism 8 surely rotates the driving roller 2 in the counterclockwise direction, and reliably sends the coil material 15 together with the driving roll 1 to the press machine side. The same applies to the case where the fourth crank mechanism 8 is at the dead center position when the rotation of the drive roll 1 starts.

In the embodiment described above, the driving roll 1
The rotary drive means 23 for rotating the gears is constituted by the large-diameter gear 21, the small-diameter gear 22, and the like, but the rotary drive means is not limited to this, and includes, for example, a rack, a pinion, a cylinder, and the like. May be.

The urging means for urging the driven roll 2 toward the driving roll 1 is an air cylinder 27 in the above embodiment, but this is not limited to an air cylinder.
For example, a spring may be used.

Further, in the above embodiment, of the pair of upper and lower rolls, the lower roll is the drive roll 1 and the upper roll is the driven roll 2, but this may be reversed.
Further, the driving roll may be biased toward the driven roll.

Further, the feeder of the above-described embodiment uses the coil material 1
5 was supplied to the press machine, but the equipment to which the coil material 15 is supplied is not limited to the press machine.
For example, a cutting machine may be used, and the material fed by the feeding device is not limited to a coil material. For example, a plate material having a predetermined length may be used. If necessary, the device according to the present invention can be applied to any strip-shaped material. .

[0024]

According to the present invention, even if the thickness of a band-shaped material such as a coil material is changed, the material can be fed in a predetermined manner, and the band-shaped material is continuously fed and elongated. You can also do things.

Further, since the crank mechanisms provided at both ends of the driven roll have different angular phases, even if one of the crank mechanisms is at the dead center position, the other crank mechanism is not at the dead center position. For this reason, the driven roll transmitted by the driving roll reliably rotates the driven roll together with the driving roll in the direction in which the strip material is fed, and the strip material can be fed in a predetermined manner.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a feeder according to an embodiment of the present invention.

FIG. 2 is a side sectional view showing the whole of the apparatus.

FIG. 3 is a side view of a partial cross section showing a rotation driving means of a driving roll and an elastic pressure urging means of a driven roll provided in the apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Driving roll 2 Follower roll 3,6 Central axis 4,5,7,8 Crank mechanism 11,12,13,14 Connecting rod 15 Coil material which is a belt-like material 17 First slider 18 Second slider 23 Rotation driving means 28 Means

Claims (1)

(57) [Claims] 1. A crank having a pair of rolls for pressing a belt-shaped material, a rotary drive unit connected to one of the rolls, and a crank pin provided at both ends of both rolls with a crank pin eccentric from the center axis of these rolls. A mechanism is provided, and one end of the connecting rod is fitted to a crank pin of a crank mechanism provided at one end on the same side of both rolls,
The other ends of these connecting rods are connected to a first slider which is movable in the feeding direction of the strip material, and one end of the connecting rod is connected to a crank pin of a crank mechanism provided at the other end of both rolls. The other ends of these connecting rods are connected to a second slider movably in the feeding direction of the strip material, and the other end of the connecting rod is connected to the crank mechanism at one end of both rolls. Roll feeder characterized in that the crank mechanism at the ends of the rolls have different angular phases.