JPH0615088B2 - Leveler feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an end portion of a pressed material unrolled in a coil shape,
The present invention relates to a structure of a leveler feeder which corrects a curl and sends it to a press.

[Prior art]

The press material before being sent to the press machine and subjected to press working is placed in a coiled state. At this time,
The curl that occurs in the press material is corrected before the press material is sent to the press machine. This correction is performed by a device called a leveler feeder. The leveler feeder has the function of correcting the curl and simultaneously feeding the end of the press material to the press. A known technique of the conventional leveler feeder is described in, for example, Japanese Patent Publication No. 59-50413. This leveler feeder is equipped with a release cylinder for performing a release operation for loosening the press material in synchronization with the press operation of the press machine. The release cylinder works so that the swing frame swings with respect to the fixed frame of the leveler feeder. And, in the swing frame,
Among the work rolls for correcting the curl of the press material, the upper work roll is provided, and the fixed frame is also provided with the lower work roll. Therefore, the swinging causes the pressed material to be loosened intermittently. This intermittent movement is the release operation, which is performed in synchronization with the press operation of the press machine.

Now, in the release operation, the gap formed between the fixed frame and the swing frame is about the thickness of the press material, and is, for example, several millimeters or ten and several millimeters. On the other hand, when performing maintenance such as cleaning the inside of the leveler feeder, it is necessary to provide a large gap between the fixed frame and the swing frame, but the gap at this time is required to be, for example, about 5 to 6 cm. . Conventionally, in order to make the gap at the time of maintenance and inspection, the mechanism for performing the swing is removed and the swing frame is lifted by a crane or the like.
That is, a link mechanism is provided between the fixed frame and the swing frame so that the swing can be performed.
The link mechanism works by the force of the release cylinder,
It was supposed to make a gap for release. A large gap was created by mechanically removing this link mechanism, winding a belt around the swing frame, and lifting it with a crane.

[Problems to be Solved by the Invention]

However, when the maintenance is carried out, removing the link mechanism and using the belt and using the crane complicates the maintenance work, and the maintenance work is not carried out sufficiently, resulting in failure or other troubles.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a leveler feeder that can be easily inspected and maintained without removing the link mechanism.

[Means for Solving the Problems]

The present invention has been made to achieve the above object,
A leveler feeder for correcting the curl at the end of the press material unwound into a coil and then sending it to the press machine, and work rolls arranged in a zigzag pattern to correct the curl of the press material. To feed the press material at a predetermined speed, pinch rolls which are vertically opposed to each other, an oscillating frame provided with an upper work roll and an upper pinch roll, and a fixing provided with a lower work roll and a lower pinch roll A leveler feeder including a frame, a swing fulcrum on which the swing frame is swingably supported with respect to the fixed frame, and a link mechanism and a cylinder device which are provided between both frames to perform the swing. In the above, between the frame for releasing the cylinder device for releasing the press material in synchronization with the press operation of the press machine and the both frames at the time of maintenance and inspection. Characterized in that the opening cylinder, a is constituted by connecting in series for opening.

[Action]

By connecting the release cylinder and the opening cylinder in series as shown in the present invention, it is possible to open a large stroke and open a large gap without making the control of the release operation difficult.

That is, the conventional leveler feeder (Japanese Patent Publication No. 59-5041)
In order to automatically create a large gap during maintenance and inspection based on No. 3), a large opening cylinder is installed in parallel with the release cylinder, and the release operation is performed by the release cylinder. It may be considered that a large gap is provided by the opening cylinder at the time of maintenance and inspection, but the opening cylinder becomes large, which is economically wasteful. In addition, release operation and opening operation (make a large gap during maintenance and inspection, the same applies below)
It is conceivable to carry out with one big cylinder,
Performing the release operation with a large cylinder makes the release operation inevitably large and makes control difficult. That is, the release operation in recent years must be performed at a high speed in synchronization with the press working performed at a high speed, and performing this high-speed release operation with a large cylinder increases the amount of fluid sent to the cylinder and Operation becomes slower, and control for high-speed operation becomes difficult. On the other hand, according to the present invention, since the release operation can be performed using the same small release cylinder as in the conventional case, it is not difficult to control the release operation. Also, by connecting two cylinders in series instead of in parallel, the opening cylinder can be made smaller because the opening cylinder can be operated by simultaneously operating the release cylinder and the opening cylinder to create a large stroke. .

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.
FIG. 2 shows a press material 10 holding a coiled press material 10.
An uncoiler 12 for sending the end of the to the press side, and a leveler feeder 14 for correcting the curl of the end of the press material 10 sent from the uncoiler 12 and then sending it to the press,
It is a side view which shows. FIG. 1 is an enlarged view of a main part of the leveler feeder shown in FIG. 3 is an enlarged side view of the cylinder device used in FIG. 1, FIG. 4 is a front view of FIG. 3, and FIG. 5 is a rear view of FIG.

As shown in FIG. 2, a pressed material 1 wound in a coil shape.
0 is a mandrel arm 16a in which the rotary shaft 16 is divided into three parts.
Is set to. At both ends of the mandrel arm 16a, three stopper arms 18 are provided for sandwiching the width direction of the coil material 10 to hold the coiled press material 10. The outer peripheral surface of the pressed material 10 thus held is guided by the guide roller 20 while preventing the coil material 10 from being loosened, and the end portion is gently fed without being bent. This guide roller 20 has a guide roller arm 22.
The guide roller arm 22 is provided at the tip of the guide roller 20 and is urged toward the outer peripheral surface of the press material 10 by the force of the cylinder 24 so that the guide roller 20 is pressed against the outer peripheral surface of the press material 10. The rotary shaft 16 is rotated by a motor 26, and the end of the press material 10 is sent to the leveler feeder 14 by this rotation.

Next, the leveler feeder 14 will be described with reference to FIGS. 2 and 1. The work rolls 28 and 30 are for correcting the curl of the press material 10 and are arranged in a zigzag pattern at the top and bottom. Of these, the upper work roll 28 is provided on the swing frame 32. Further, the lower work roll 30 is provided on the fixed frame 34. The pinch rolls 36 and 38 are for feeding the press material 10 to the press at a predetermined speed, and a pair of upper and lower pinch rolls are arranged. A guide roll 40 and a pilot roll 42 are provided behind the pinch rolls 36 and 38 to guide the end portion of the press material so that it is properly fed to the press machine. Of the pinch rolls 36 and 38, the upper pinch roll 36 and the guide roll 40 are provided on the swing frame 32, and the lower pinch roll 38 and the pilot roll 42 are provided on the fixed frame 34. The upper pinch roll 36 is supported by a support body 44, and the support body is supported in the swing frame 32 so as to be vertically movable. That is, the vertical position of the support body 44 is the adjustment nut 46.
The upper pinch roll 36 is adjusted by the spring 4
The force of 8 is applied downward to give a force for gripping and feeding the press material 10. The spring 48 is provided around the bolt 50, and the force can be adjusted by tightening the bolt 50.
Gears 52 are provided coaxially on the work rolls 30 and the pinch rolls 38, and the gears 52 are connected by another gear group 54. Then, a large pulley 56 provided coaxially with the lower pinch roller 38 is rotated by a motor 60 (FIG. 2) via a timing belt 58, so that the whole is simultaneously rotated.

The swing frame 32 swings relative to the fixed frame 34 as the fulcrum 6
It is supported around 2 and can swing. A link mechanism for rocking is provided between the fixed frame 34 and the rocking frame 32 on the side opposite to the rocking fulcrum 62. That is, one end of the swing link 64, which is the first link, is pin-connected to the fixed frame 34, and the other end projects upward. The center portion of the connection link 66, which is the second link, is pin-coupled to the other end of the swing link 64, the lower end is pin-coupled to the end portion of the swing frame 32, and the upper end is one end of the cylinder device 68. Pinned to.

The cylinder device 68 is configured by connecting an opening cylinder 72 of a release cylinder 70 in series.
The release cylinder 70 is for performing a release operation of loosening the press material in synchronization with the press operation of the press machine while the press material 10 is being passed between the leveler feeder 14 and the press machine. The releasing cylinder 70 is a small air cylinder having a capacity necessary for the releasing operation as in the conventional case. The opening cylinder 72 is used for the fixed frame 34 and the swing frame 3 during maintenance and inspection.
For performing an opening operation for opening between 2 and
An air cylinder is used. By connecting both cylinders 70, 72 in series, both cylinders 7
Strokes can be earned by working 0, 72 in the extension direction. As a result, the capacity of the opening cylinder 72 can be reduced as compared with the case where the release cylinder 70 and the opening cylinder 72 are provided in parallel. The release cylinder 70 side is pin-connected to the upper end of the connection link 66. The opening cylinder 72 side is pin-coupled to the swing fulcrum side of the swing frame 32 side.

An enlarged view of the cylinder device is shown in FIGS. A screw hole 76 is formed in the center of the end surface of the piston rod 74 of both cylinders 70 and 72.
A connecting rod 78 having a male screw formed on the outer circumference is screwed. Both piston rods 74 are rotatable with respect to both cylinders 70 and 72, and both piston rods 74 are connected by gripping and rotating both piston rods with a connecting wrench 78, for example, with a spanner or the like. be able to. At this time, the end surface of the piston rod 74 is chamfered and the positions of both cylinders are aligned.

The fixed frame 34 of the swing fulcrum 62 and the swing link 64
The eccentric shaft 80 is provided on each of the pin connecting portions on the side.
By rotating this eccentric shaft 80,
The gap between the fixed frame 34 and the swing frame 32 can be adjusted according to the plate thickness of the press material 10. This adjustment is performed, for example, by a worm gear device provided between the shaft provided with the eccentric shaft 80 and the handle shaft 82 orthogonal to this shaft. That is, the handle 84
The handle shaft 82 rotates by rotating, and the shaft on the eccentric shaft 80 side rotates by the action of the worm gear device, and the size of the gap is adjusted by the position of the eccentric shaft 80.

The operation of this embodiment will be described below. Pressed material 10
Is sent to the right from the uncoiler 12 (FIG. 2), the work rolls 28 and 30 correct the winding distortion, and the pinch rolls 36 and 38 are sent to the right, that is, to the press machine. When the fed press material 10 is pressed by the press machine, the release cylinder performs the release operation so that the press material 10 can move freely in accordance with the press operation. That is, in the high-speed press, press working is performed at a speed of, for example, n times per second, high-pressure air is sent to the release cylinder 70 in synchronization with the press operation, and the release cylinder 70 is connected with the connection link 66.
Is rotated counterclockwise in the figure, and the swing frame 32 is rotated clockwise around the swing fulcrum 62. As a result, a gap is created between the upper and lower work rolls and between the pinch rolls, and the release operation is performed. At this time, the swing link 64 functions to allow the horizontal movement of the connection link 66. This release operation is also performed n times per second, for example.

Next, at the time of maintenance or inspection such as cleaning the inside of the leveler feeder 14, the release cylinder 70 and the opening cylinder 72 are simultaneously actuated in the extending direction, and the connection link 66 is pivoted in a counterclockwise direction in the drawing to swing. The frame 32 is largely rotated around the swing fulcrum 62 to form a large gap between the upper and lower work rolls and the pinch rolls.

According to this embodiment, as compared with the case where one large cylinder is provided to perform the release operation and the opening operation, it is easy to control the release operation performed at high speed by the release cylinder 70 having the same small capacity as in the related art. can do. That is, in order to operate at high speed, the smaller the capacity of the cylinder, the easier the control. Further, as compared with the case where two cylinders, a small release cylinder 70 and a large opening cylinder 72, are provided in parallel, in the present embodiment, since both cylinders 70 and 72 are connected in series, a large stroke occurs during the opening operation. You can earn and make a big gap. Therefore, a smaller opening cylinder 72 is required as compared with the case of parallel arrangement. Further, the maintenance and inspection work becomes extremely easy as compared with the conventional practice in which a part of the link mechanism is removed, a belt is wound and the crane is hung to make a gap.

〔The invention's effect〕

As described above, according to the leveler feeder of the present invention, at the time of maintenance and inspection, the release cylinder and the opening cylinder can be simultaneously actuated to automatically make a large gap. Maintenance and inspection work can be facilitated compared to the work of hanging with a removing crane. Further, by connecting the release cylinder and the opening cylinder in series, the release operation can be easily controlled, and the capacity of the opening cylinder can be reduced.

[Brief description of drawings]

FIG. 1 is an enlarged view of an essential part showing an embodiment of the leveler feeder of the present invention, FIG. 2 is an overall schematic view of the leveler feeder of FIG. 1, and FIG. 3 is an enlarged side view showing the cylinder device of FIG. FIG. 4 is a front view of FIG. 3, and FIG. 5 is a rear view of FIG. 10 ... Pressed material, 28, 30 ... Work roll, 32 ... Swing frame, 34 ... Fixed frame, 36, 38 ... Pinch roll, 40 ... Guide roll, 42 ... Pilot roll, 62 ... Swing fulcrum, 64 ... First link (swing link), 66 ... Second link (connection link), 70 ... Release cylinder, 72 ... Opening cylinder.

Claims (1)

[Claims] 1. A leveler feeder for correcting the curl of an end portion of a press material unwound into a coil and then sending it to a press machine, which is arranged in a zigzag pattern in order to correct the curl of the press material. Work roll, a pinch roll arranged to face each other in order to feed the press material at a predetermined speed, an oscillating frame provided with an upper work roll and an upper pinch roll, a lower work roll and a lower pinch roll And a swing fulcrum on which the swing frame is swingably supported with respect to the fixed frame,
In a leveler feeder including a link mechanism provided between both frames and performing the swing and a cylinder device, a release cylinder for loosening a press material in synchronization with a press operation of a press machine by the cylinder device. ,
A leveler feeder, comprising: an opening cylinder for opening between the two frames at the time of maintenance and inspection, which are connected in series.