JP3313287B2 - Zigzag feeder for coil materials - 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 coil material or a fixed-size material to a press machine while zigzag-feeding the same, and the present invention relates to a so-called zigzag feeder. It belongs to

[0002]

2. Description of the Related Art As a prior art, Japanese Utility Model Publication No. 60-034421 by the same applicant can be mentioned.

The above-mentioned prior art discloses a case where three rows are omitted. Looking at Fig. 1 of the utility model publication, A,
Punching is performed in the order of B, C, D, E, and F, and round blanks are sequentially obtained. In this case, the feed pitch in the sheet width direction is b when A is stamped and then B is processed, and similarly, the relationship between B and C is b. However, the relationship between C and D is 2b.

According to the design experience of the inventor, the weight of the unit for moving the coil material while the coil material is fixed is far greater than the weight of the coil material at the portion to be zigzag-fed. Big.

[0005] Further, in consideration of the crosspiece width of the coil material in the scrap, that is, the width of the suspension bridge portion remaining after being punched, the ratio of the feed pitch in the longitudinal direction to the feed pitch in the width direction of the coil material is generally It is about 2: 1.7. However, as described in the above-mentioned prior art, in the widthwise feeding, 2 out of every 2 times is used.
Double feed amount, that is, 2b. Taking this point into account, the ratio of the feed pitch in the longitudinal direction to the feed pitch in the width direction of the coil material is about 1: 3.4, and the feed pitch in the width direction is large.

[0006]

Therefore, when increasing the speed of the conventional zigzag feeder, it is desired to reduce the feed pitch in the width direction. In other words, an object of the present invention is to enable high-speed operation by reducing the widthwise feed pitch in a so-called zigzag feeder.

[0007]

In the present invention, the means for suppressing the feed pitch in the width direction to the minimum pitch incorporates not only the operation of sending the coil material toward the press machine but also the operation of returning it.

[0008]

The coil material is zigzag punched by combining the feeding operation in the width direction with the returning operation as well as feeding the coil material toward the press machine.

[0009]

1 and 2, the machine frame 1 is provided with a movable frame 2, and the movable frame 2 is provided with a lower roll 3 and an upper roll 4. Movable frame 2
Are guided by rails 5 provided on the machine base 1 and are reciprocally movable by a zigzag motor 7 in a direction perpendicular to a so-called feed direction of the coil material W.

[0010] The lower roll 3 and the upper roll 4 are. The coil material W is clamped and sent (forward) or returned (retreat) toward the press machine. Upper and lower rolls 4 and 3 are feed motors 6
It is rotatable. As these motors, those capable of controlling the rotation amount such as servo motors are used.

The feed motor 6 and the zigzag motor 7
Is rotated in the normal and reverse directions, whereby the coil material W can be fed in a zigzag manner. These specific structures will be described below.

The feed motor 6 is fixed to the machine base 1, and a pulley 8 is fixed to the output shaft of the feed motor 6. On the other hand, a spline shaft 11 is rotatably provided on the movable frame 2, and a pulley 10 is fitted into the spline portion of the spline shaft 11 so as to be movable in the axial direction. A timing belt 9 is hung on the pulley 8 and the pulley 10. A gear 12 is fixed to the spline shaft 11 and meshes with a gear 13 fixed to the shaft of the lower roll 3. Lower roll 3 and upper roll 4
The gears fixedly mounted on the shafts respectively mesh with each other.

With the above structure, when the feed motor 6 is rotated forward and backward, the upper and lower rolls 4 and 3 rotate, so that the coil material W moves forward or backward. Since the movable frame 2 moves with respect to the machine base 1, the pulley 10
Are configured to be able to move on the spline shaft 11 in the axial direction.

The zigzag motor 7 is fixed to the machine base 1, and its output shaft is connected to a shaft 14;
A pinion 15 is fixed to 4. On the other hand, a rack 16 is fixed to the movable frame 2 and meshes with the pinion 15. With the above structure, when the zigzag motor 7 is rotated forward and backward, the movable frame 2 performs a so-called zigzag motion by a so-called rack and pinion mechanism.

Hereinafter, the punching will be described with reference to FIG. In FIG. 3, 1, 2, 3, 4, 5, 6, 7, 8, and 9 indicate the order of punching. That is, first, 1 is aligned with the position of the punch attached to the press machine, and punching is sequentially performed with 2, 3. Q is a pitch at which the coil material W is fed in the longitudinal direction, and the direction of the arrow A, that is, forward is positive (+), and the opposite direction, that is, backward (return) is negative (-). P is a feed pitch in the width direction, where the left direction is positive (+) and the right direction is (-). The method of feeding the coil material W is shown on the right side of the picture of the coil material W.

In order to stamp out 1 and then stamp out 2, the position 2 of the coil material W is adjusted to the position 1. Therefore, the coil member W is moved forward by Q, and is moved to the left by P, that is, + P (hereinafter, + is omitted, and the same applies to Q). In simple terms, "1 → 2 P &
Q ", and is as described on the right of the coil material W.

In the same manner, after punching 2
In the case of punching, it is relatively the same as moving 3 to the position 2 in FIG. 3 from a relative point of view, so it is only necessary to move back by Q and move left by P. If it is simply displayed, it becomes "2 → 3 P &-Q".

Thereafter, punching is sequentially performed in the same manner as in steps 4, 5, 6, 7, 8, and 9.

The forward and backward movements of the above Q are performed by the feed motor 6,
The movement of P in the left-right direction is executed by the zigzag motor 7, respectively.

In the above description, the coil material W is shown as a material to be handled, but a fixed-length material cut to a certain length can also be applied. Although a roll is shown as a device for moving the coil material W forward and backward, a so-called gripper feed may be used.

Further, a motor is shown as a driving source.
A mechanical drive source such as a fluid cylinder and a rack and pinion mechanism may be used.

Further, although three rows are omitted in the above description, it is not particularly limited to three rows.

[0023]

According to the present invention, as means for suppressing the feed pitch in the width direction to the minimum pitch, not only the operation of feeding the coil material toward the press machine but also the operation of returning the coil material is incorporated, so that the so-called zigzag feed device is used. High-speed operation is possible.

[Brief description of the drawings]

FIG. 1 is a side view of a zigzag feeder according to an embodiment of the present invention.

FIG. 2 is a front view of the same zigzag feeder.

FIG. 3 is an explanatory view showing the order of punching.

[Explanation of symbols]

1 is a base, 2 is a movable frame, 3 is a lower roll, 4 is an upper roll, 5 is a rail, 6 is a feed motor, 7 is a zigzag motor, 8 is a pulley, 9 is a timing belt, 10 is a pulley, 11 Is a spline shaft, 12 is a gear, 13
Is a gear, 14 is a shaft, 15 is a pinion, 16 is a rack, and W is a coil material.

Claims (2)

(57) [Claims] In a zigzag feeder for feeding a coil material or the like to a press machine, a member for feeding the coil material or the like in a longitudinal direction and a member for moving the coil material or the like in a width direction are provided, and the coil material or the like is fed in a longitudinal direction. A zigzag feeder for a coil material or the like, characterized in that a retreat operation is incorporated in addition to a forward operation, and in the actual feed operation, the longitudinal feed always includes a retreat operation. 2. A zigzag feeder for feeding a coil material or the like to a press machine, comprising a member for feeding the coil material or the like in the longitudinal direction and a member for moving the coil material or the like in the width direction and feeding the coil material or the like in the longitudinal direction. A zigzag feeding device for a coil material or the like, characterized in that a retreating operation is incorporated in addition to an advancing operation, and the feeding in the width direction is performed so as not to pass an adjacent row.