JP2504798B2 - Header cutting piece feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention cuts a wire rod, particularly a round wire for precision processing, and feeds a cut piece of a header used for transferring a cut piece to the next step. Regarding the device.

(Prior Art) Conventionally, copper, silver and silver alloy wire are cut into a predetermined length,
For the transfer, a feeding device as shown in FIG. 4 was used. Referring to the drawings below, a fixed die holder 1 is provided with a cutting die 2, a wire 3 made of silver or the like is sent out through a hole of the cutting die 2, and the tip of the wire 3 stops on the plane of the cutting die 2. A cutter 5 is attached to the cutter arm 4, and the cutter 5 is provided with a semicircular concave cutter groove 6 corresponding to the wire diameter of the wire 3. As will be described later, the protruding wire rod 3 is held by the cutter groove 6 and the support 7. The support body 7 is held by one point of a screw 9 in the central portion of the support base 8 attached to the cutter 5, and the cutter arm 4 is tensioned with the support base 8 by a spring 10.
Moves in the direction of the arrow, and the cutting die 2 and cutter 6
At the same time when the centers of the wire rods coincide with each other, the wire rod 3 is protruded along the cutter 6 by a predetermined dimension by a wire rod feeding device (not shown), and the support 7 is pushed out. Next, the cutter arm 4
Moves further to the left and stops at the forming die 11. Although not shown thereafter, the punch holder advances from the direction perpendicular to the plane of the forming die 11, inserts the cut piece into the forming die 11 with the first punch pin attached to the punch holder, and then the cutter arm 4 retracts. , It was a mechanism to return to before the first operation.

(Problems to be Solved by the Invention) However, in the conventional cutting piece feeding device for header,
Since the cut piece of the wire 3 is held by the force of the spring 10 of the support 7, it is difficult to adjust the pressing force of the spring, and the cut piece may drop due to vibration or be inserted obliquely into the forming die when operating at high speed. When scratches were made and the punches were used to form electrical contacts and the like, the scratches on the side surfaces of the contacts were uneven in gloss, and defects such as shapes were generated.

(Object of the Invention) The present invention has been made to solve the above problems, and provides a cutting piece feeding device for a header that facilitates spring pressure adjustment with a screw and holds and transfers a contact piece in a gripping posture. The purpose is.

(Means for Solving the Problems) A cutting piece feeding device for a header according to the present invention includes a fixed die having a hole, a movable cutter having a semi-cylindrical groove having a diameter substantially equal to the diameter of the hole, and attachment to the cutter. A feeding device comprising a supporting rod held by one point of a supported support and tensioned by a spring, wherein a spring fine adjusting screw is provided on the supporting rod. .

(Operation) As described above, the cutting piece feeding device of the header of the present invention is fixed to the cutter arm 12, and then the pin 17 attached to the tip of the support 16 is set in the center view of the concave cutter groove 29. And fix with screws 18. Then, when the wire rod 24 is inserted by a feeding device (not shown), the pin 17 opens and the stopper
Proceed to position 27. Next, the cutter arm 12 advances and the wire rod 24
Is disconnected. The spring fine adjustment screw 23 has an action of holding the cut piece by the pin 17 so that the cut piece is held in the gripping posture.

(Embodiment) An embodiment of the cutting piece feeding device of the present invention will be described with reference to the drawings. FIG. 1 is a front view of the present invention, FIG. 2 is a left side view thereof, and FIG. 3 is a right side view thereof. is there. A support base 14 is fixed to a cutter arm 12 directly connected to the header body with a screw 13. A bearing 15 is provided in the center of the support base 14, a support 16 is attached to the drive part of the inner ring by a shaft mount, and a pin 17 is fitted into the tip part and fixed by a screw 18. Further, a through hole 19 is provided in the central portion of the support body 16, a support rod 20 having both ends fixed by nuts is fitted therein, and a spring 21 is circumferentially contacted with the upper portion thereof. The flat surface of the upper nut of the support rod 20 is in contact with the spring fine adjustment screw 23 at the tip of the flat plate 22 attached to the upper portion of the support base 14. The spring fine adjustment screw 23 is installed so that it can be moved up and down.
17 pressure adjustments have been made.

After that, the wire rod 24 made of silver or the like is fixed to the fixed die holder 25 by a wire rod feeder (not shown).
The wire 24 is sent out by pushing the pin 17 through the hole of 26 and expanding it. The tip of the wire 25 stops at the position of the stopper 27. A cutter 28 is attached to the cutter arm 12, and a semicircular concave cutter groove 29 corresponding to the wire diameter of the wire 24 is provided at the tip of the cutter 28. The inserted wire 24 is held in a gripping posture by the pin 17 and the cutter groove 29, which are pressed and adjusted by the spring fine adjustment screw 23. Next, the cutter arm 12 moves forward. After that, although not shown, it stops at the forming die, the punch holder advances from the direction perpendicular to the plane of the forming die, the first punch pin attached to the punch holder inserts the cut piece into the forming die, and then the cutter arm retracts. However, it is a mechanism that returns before the start of the first operation.

(Effect of the invention) As can be seen from the above description, the cutting piece feeding device of the present invention can easily replace the pin, and by changing the pressing force of the pin with the spring fine adjustment screw in accordance with the wire diameter, The contact piece can always be held in the gripping posture. Therefore, the cut pieces do not drop due to the vibration of the motor even when operating at high speed, and are reliably inserted into the molding die. Therefore, the defective shape and uneven gloss after the molding process do not occur, and the mass production effect is remarkably enhanced.

[Brief description of drawings]

1 is a front view of the present invention, FIG. 2 is a left side view thereof, and FIG.
The drawing is a right side view, and FIG. 4 is a perspective view of a conventional cutting piece feeding device. 1,25 …… Fixed die holder, 2,26 …… Cutting die, 3,24
...... Wire, 4,24 …… Cutter arm, 5,28 …… Cutter, 6,
29 …… Cutter groove, 7,16 …… Supporting body, 8,14 …… Supporting base, 9
...... Screw, 10 ...... Spring, 11 …… Molding die, 13 …… Screw, 15 …… Bearing, 17 …… Pin, 18 …… Screw, 19 ・ ・ ・
… Through hole, 20 …… Support rod, 21 …… Spring, 22 …… Flat plate, 22
...... Spring fine adjustment screw, 27 …… Stopper.

Claims (1)

(57) [Claims] 1. A fixed cutting die having a hole, a movable cutter having a semi-cylindrical groove having a diameter substantially equal to the hole diameter, and a support table attached to the cutter, which is held by a single point and tensioned by a spring. A feeder for cutting pieces of a header, comprising a support rod and a spring fine adjustment screw provided on the support rod.