JP2001030029A - Roll feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be also applicale to a press more high-speed property of which is desired and, besides, to execute highly accurate feeding even to a thin base stock to be worked. SOLUTION: The angle in the vertical direction of an upper roll 2 is adjustable with a Z-servomotor 20. The angle in the horizontal direction of the upper roll 2 is adjustable with a Y-servomotor 24. The feeding state of the base stock 16 to be worked is detected with a feed sensor 30. By inputting signals from the feed sensor 30, the Z-servomotor 20 and Y-servomotor 24 are controlled with a processing circuit 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll feeder for intermittently feeding a long working material such as a coil material to a working position of a press machine body.

[0002]

2. Description of the Related Art If a long work material sent out from a roll feeder is meandering or runs in an oblique direction and is not correctly set at a work position of a press machine body, a work defect occurs and a yield is reduced. .

[0003] Therefore, conventionally, a pilot release mechanism is provided in a roll feeder to release the work material by intermittently raising the upper roll of a pair of upper and lower rolls holding the work material, or to release the work material from the pair of upper and lower rolls. A countermeasure has been taken to provide left and right guide members in a feed passage between the processing position and to correct meandering and skew of the processing material.

[0004]

However, since the pilot release is performed during a period from when the upper roll is stopped to when the upper roll is restarted, the feed speed of the work material is not supplied to the roll feeder that performs the pilot release. In other words, there is a limit to the SPM of the press machine, and it is not suitable for a press that requires higher speed.

[0005] On the other hand, it becomes difficult for the left and right guide members to effectively exert a guide function on a thin processed material.

The present invention focuses on the problems of the conventional roll feeder as described above, and can be applied to a press where higher speed is desired. It is an object to provide a roll feeder that can perform the roll feeder.

[0007]

According to the present invention, there is provided a roll feeder comprising a pair of upper and lower rolls for intermittently feeding a long working material to a processing position of a press machine main body. Vertical angle adjusting means capable of adjusting the angle of one roll in the vertical direction, and a feed sensor for detecting a feed state of the processing material,
And an arithmetic processing circuit for receiving a signal from the feed sensor and controlling the vertical angle adjusting means.

Further, another roll feeder of the present invention comprises:
In a roll feeder having a pair of upper and lower rolls for intermittently feeding a long working material to a processing position of a press machine main body, a horizontal angle adjustment capable of adjusting a horizontal angle of at least one of the upper and lower rolls Means, a feed sensor for detecting a feeding state of the work material, and an arithmetic processing circuit for receiving a signal from the feed sensor and controlling the horizontal angle adjusting means.

Further, another roll feeder according to the present invention is a roll feeder comprising a pair of upper and lower rolls for intermittently feeding a long work material to a processing position of a press machine body, wherein one of the upper and lower rolls is provided. A vertical angle adjusting means capable of adjusting a vertical angle of the roll; a horizontal angle adjusting means capable of adjusting a horizontal angle of at least one of the upper and lower rolls; and detecting a feeding state of the processing material. And a processing circuit for receiving a signal from the feed sensor and controlling the vertical angle adjusting means and the horizontal angle adjusting means.

Here, the arithmetic processing circuit has a learning function, and the vertical angle adjusting means and / or
Alternatively, the horizontal angle adjusting means is controlled.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual configuration diagram of a roll feeder according to one embodiment, and FIG. 2 is a longitudinal sectional view of the roll feeder shown in FIG.

1 and 2, a roll feeder 1 includes a pair of upper and lower rolls 2 and 3. The upper roll 2 of the pair of upper and lower rolls 2 and 3 is a right end 2a of the rotation shaft.
Is a self-aligning bearing 6 of a fixed plate 5 erected on a machine frame 4.
And the left end 2b of the rotating shaft is rotatably supported by a bearing 8 of a movable plate 7 which can be displaced in the vertical direction. A servo drive mechanism 10 provided with a drive servo motor 9 (FIG. 3) installed on the machine frame 4 is connected to the right end 2a of the rotating shaft, and the upper roll 2 is driven by the servo drive mechanism 10. , And is intermittently rotated in synchronization with the operation of the press machine body (not shown).

On the other hand, the lower roll 3 has a right end 3a of the rotating shaft rotatably supported by the bearing 11 of the fixed plate 5, and a left end 3b of the rotating shaft stands upright on the machine frame 4. It is rotatably supported by a bearing 13 of another fixed plate 12. And the lower roll 3
Servo drive via a drive gear 14 fixed to the right end 2a of the rotation shaft of the upper roll 2 and a driven gear 15 fixed to the right end 3a of the rotation shaft of the lower roll 3 and meshing with the drive gear 14 It receives torque from the mechanism 10 and is driven to rotate in synchronization with the rotation of the upper roll 2.

A pair of upper and lower rolls 2 and 3 sandwich a long work material 16. The work material 16 is rotated intermittently by a pair of upper and lower rolls 2 and 3 in synchronization with the operation of the press machine body. By being driven, it is intermittently fed to the processing position of the press machine body.

As shown in FIG. 1, the movable plate 7 has a vertical internal thread 17.
The male screw part 18 is engaged with the Z servo motor 20 mounted on the machine frame 4 via the coupling 19.
Is connected to the output shaft 20a.

Further, as shown in FIG. 2, the movable plate 7 has a female screw portion 21 in the horizontal direction (the feeding direction of the processing material 16), and the male screw portion 22 meshes with the female screw portion 21. The male screw portion 22 is connected via a coupling 23 to an output shaft 24a of a Y servomotor 24 installed on the machine frame 4. The pilot release mechanism may or may not be provided as needed.

In the roll feeder 1 configured as described above, when the Z servo motor 20 starts rotating upon receiving a command from an arithmetic processing circuit 50 (FIG. 3) to be described later, the male screw portion 18 rotates through the coupling 19. I do. Here, the right end 2a of the rotating shaft of the upper roll 2 is
The female screw 17 can be raised or lowered in the vertical direction by the rotation of the male screw 18, and the vertical displacement of the female screw 17, in other words, the vertical displacement of the movable plate 7 , Upper roll 2
Is adjusted with the right end 2a of the rotating shaft as a base point. By adjusting the angle of the axis of the upper roll 2 in the vertical direction, the distribution of the pressing force applied to the processing material 16 by the upper roll 2, that is, the left-right direction of the processing material 16 (the direction orthogonal to the feeding direction). , The pressure distribution of the upper roll 2 changes, and the skew or meandering of the work material 16 can be corrected. Since the amount of displacement of the movable plate 7 in the vertical direction is small, there is almost no possibility that the displacement of the movable plate 7 in the vertical direction will hinder the meshing state between the drive gear 14 and the driven gear 15.

Similarly, when the Y servo motor 24 starts rotating in response to a command from the arithmetic processing circuit 50, the male screw portion 22 rotates via the coupling 23, and the female screw portion 21 is rotated based on the action of the self-aligning bearing 6. In other words, the movable plate 7
Moves forward or backward in the horizontal direction (feeding direction). Due to the displacement of the movable plate 7 in the feeding direction, the horizontal angle of the axis of the upper roll 2 is adjusted with the right end 2a of the rotating shaft as a base point, and the horizontal angle of the axis of the upper roll 2 is adjusted. The distribution of the pressing force applied by the upper roll 2 to the processing material 16, that is, the pressure distribution of the upper roll 2 in the left-right direction (the direction orthogonal to the feeding direction) of the processing material 16 changes. Skew or meander can be corrected. Since the amount of displacement of the movable plate 7 in the horizontal direction is small, there is almost no possibility that the displacement of the movable plate 7 in the horizontal direction will hinder the meshing state between the drive gear 14 and the driven gear 15.

FIG. 3 shows a control system diagram of the roll feeder 1.

In FIG. 3, a feed sensor 30 for detecting a feeding state of the work material 16 is provided in a feed path of the work material 16. As the feed sensor 30, a photoelectric conversion element such as a line sensor that optically detects the lateral displacement of the edge 16 a of the processing material 16 and converts the displacement into an electric signal is preferable.

The arithmetic processing circuit 50 controls the drive servomotor 9 in synchronization with the operation of the press machine main body, the pair of upper and lower rolls 2 and 3 intermittently rotate, and the work material 16 moves to the processing position of the press machine main body. It is sent intermittently until.

The arithmetic processing circuit 50 includes a feed sensor 3
0, and issues a command to the Y servo motor 24 and / or the Z servo motor 20. The horizontal angle and / or the vertical angle of the axis of the upper roll 2 is adjusted, and the processing material 16 is adjusted. , The pressure distribution of the upper roll 2 in the left-right direction changes, and the skew or meandering of the processing material 16 can be corrected. Here, the arithmetic processing circuit 50 measures the actual feeding state of each intermittently performed operation, and in the next feeding, Y is set so as to eliminate the error of the previous actual feeding state from the target feeding state. The servo motor 24 and / or the Z servo motor 20 are controlled, or the average value of the actual feed state for each predetermined number of times is calculated, and in the next feed, the average of the actual feed state with respect to the target feed state is calculated. The Y servo motor 24 and / or the Z servo motor 20 are controlled so as to eliminate the value error. Then, the arithmetic processing circuit 50
Has a learning function, evaluates and stores the control result of the previous feed, and stores the parameters in the arithmetic processing circuit 50 or corrects the control theory based on the evaluation. This learning result is used for each intermittent feed, or after the entire intermittent feed is completed, the same processing material 16 is used.
Is used when a new series of intermittent feeds is started, or is transferred to the arithmetic processing circuit 50 of another roll feeder 1 of the same model and used to feed the roll feeder 1. You.

As described above, according to the roll feeder 1 of this embodiment, the vertical angle and / or the horizontal angle of the axis of the upper roll 2 can be adjusted using the servo motors 20 and 24. Since the skewing and meandering of the processing material 16 can be corrected, when the pilot release is not performed, the processing material 16 can be applied to a press where higher speed is desired. Can be expected to perform high precision feeding.

Further, since the arithmetic processing circuit 50 is provided with a learning function, it becomes possible to carry out an optimal feed from the next feed start.

In the embodiment described above, the servo motor 2 is used to adjust the angle in the vertical direction and the angle in the horizontal direction.
Although 0 and 24 are used, the angle may be adjusted by a linear motor. The horizontal angle adjustment is performed by displacing the upper roll 2 and the lower roll 3 at the same time instead of displacing the axis of the upper roll 2 as described above. The third axis may be displaced. Further, for the vertical angle adjustment, the axis of the lower roll 3 may be displaced. Furthermore, lower roll 3
May be an idle roll.

[0027]

As described above, the roll feeder of the present invention can adjust the vertical angle and / or the horizontal angle of at least one of the pair of upper and lower rolls, and can adjust the inclination of the processing material. Since the line and meandering are configured to be able to be corrected, when pilot release is not performed, it can be applied to a press where higher speed is desired, and high-precision feed is performed even for a thin processed material. I can expect that.

Further, since the arithmetic processing circuit is provided with a learning function, it is possible to perform optimal feeding from the next start of feeding.

[Brief description of the drawings]

FIG. 1 is a conceptual configuration diagram of a roll feeder according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the roll feeder shown in FIG.

FIG. 3 is a control system diagram of the roll feeder.

[Explanation of symbols]

 Reference Signs List 1 roll feeder 2 upper roll 3 lower roll 16 long work material 20 Z servo motor (vertical angle adjusting means) 24 Y servo motor (horizontal angle adjusting means) 30 feed sensor 50 arithmetic processing circuit

Claims (4)

[Claims] 1. A roll feeder having a pair of upper and lower rolls for intermittently feeding a long working material to a working position of a press machine body, wherein a vertical angle of one of the upper and lower rolls can be adjusted. Vertical angle adjusting means, a feed sensor for detecting a feeding state of the processing material, and a processing circuit for receiving a signal from the feed sensor and controlling the vertical angle adjusting means. And roll feeder. 2. A roll feeder having a pair of upper and lower rolls for intermittently feeding a long working material to a working position of a press machine main body, wherein a horizontal angle of at least one of the upper and lower rolls is adjusted. Possible horizontal angle adjusting means, a feed sensor for detecting a feeding state of the processing material, and a processing circuit for inputting a signal from the feed sensor and controlling the horizontal angle adjusting means. Roll feeder characterized. 3. A roll feeder comprising a pair of upper and lower rolls for intermittently feeding a long working material to a processing position of a press machine main body, wherein a vertical angle of any one of the upper and lower rolls can be adjusted. Vertical angle adjusting means, horizontal angle adjusting means capable of adjusting a horizontal angle of at least one of the upper and lower rolls, a feed sensor for detecting a feeding state of the work material, and the feed A roll feeder comprising: a signal input from a sensor; and an arithmetic processing circuit for controlling the vertical angle adjusting means and the horizontal angle adjusting means. 4. The arithmetic processing circuit according to claim 1, wherein the arithmetic processing circuit has a learning function, and controls the vertical angle adjusting means and / or the horizontal angle adjusting means based on a learning result. And roll feeder.