JPS6036850B2 - Molding equipment using press mold with rotating mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for forging wire rods such as pins or terminals, and in particular, when locally forging round rod wire rods, mechanical manufacturing is performed in synchronization with a mold. The purpose is to process while rotating.

In the conventional method for processing round bar wire rods, the neck 2 and leg portions 3 of the wire rod 1 are processed by cutting as shown in FIG. 1, but this process takes a long time and is not suitable for mass production.

Therefore, a method of forging using a die as shown in Fig. 2 was considered, but the workpiece 4 deforms laterally into an elliptical shape, and in order to process it into a circular shape, it is necessary to rotate the workpiece 4. there were. Some rotating means used magnetic force, but they had the following drawbacks. 1. Because it uses magnetic force, it cannot be applied to processing non-magnetic materials.

2. Since the rotation of the workpiece depends on magnetic force, it is uncertain and the operation becomes unstable, resulting in a high rate of machining defects. One embodiment will be explained with reference to FIGS. 3 to 17.

Reference numeral 5 denotes a coiled wire strip, which is passed through a straight line cutter 6, straightened into a straight line, and cut into a fixed size.

Reference numeral 7 denotes a press device, which processes the wire rods 9 sent one by one by the wire rod feeder 8 into a desired shape, moves the wire rod drive device 1 from the river in the direction of the arrow x1, and presses the wire rods 9 into a desired shape by the wire rod feeder 11. Take out the books one by one.

Next, the structure of the wire feeding device will be explained. Reference numeral 12 designates a holding box in which the wire rod 9 is held, and below it there is a groove wheel 13 having a groove 12' around the circumference in which the wire rod 9 can be held in synchronization with the press device. There is a holding block 14 which is attached to the ditching vehicle at a constant interval.

15 is a timing belt, and 1 holds the wire rod 9;
5', and is moved in x3 directions by shafts 16 and 17, with a holding plate 18 on the horizontal portion and a holding block 19 on the circumference of the shaft 17.

20 is a shirt cover which slides in the four directions of arrows in synchronization with the shaft 17 to open and close the upper part of the groove 21.

Reference numeral 22 denotes a holder, which has a pressure unit 23 inside, moves inside the wire feeding device 8 in the x4 direction of the arrow, and is biased by the spring 2 in the x5 direction of the arrow.

25 is a liquid or gas such as urethane, which is sealed in the pressure unit and urges the piston 26 in the x6 direction, the pressure of which is adjusted by a screw 27.

Reference numeral 28 denotes a push rod, which has a diameter approximately equal to the diameter of the wire holder 9 and is fixed to the piston 26 within the holder 22.

Reference numeral 29 denotes a rod, which converts motion from a rotational drive source (not shown) into linear motion in the direction of arrow x7 by means of a shaft 30 and a lever 31.

Next, the structure of the press die will be explained. Reference numeral 32 designates an upper mold holder, which fixes a punch plate 34 downward with bolts 33, and connects the punch plate and upper mold punches 35, 3.
6 is fixed with a bolt 37.

Reference numeral 38 denotes a lower die holder, to which dies 40 and 41 are fixed upwardly by bolts 39.

Reference numeral 42 denotes a guide pin, and a guide push 43 positions the upper mold holder 32 and the lower mold holder 38, and a guide pin 44 positions the punch plate 34 and the holder presser 45.

A spring 46 biases the hanging bolt 47 in the direction of arrow x8, and at the top dead center, the punch plate 34 and the holder presser 45 are separated by a distance of days.

48 is a chain guide, and at top dead center spring 4
The upper limit is set by the hanging bolt 50, and there is a distance between the chain guide 48 and the lower mold holder 38.

Reference numeral 51 designates a chain of the holder conveyance section, which is provided with an attachment 52 on one side and is in contact with the upper surface 53 of the convex portion of the chain guide 48.

Reference numeral 54 denotes a circle, which supports the wire 9 via a steel ball 56 and is pressed down from both sides by washers 56.

A rotating holder 57 is supported on both sides by attachments 52 and has rotating blades 58.

59 is the upper end surface of the chain guide, and in FIG. 3, the distance 3 from the center of the rotating holder 57 is designed to be shorter than the length 4 of the rotating blade 58.

60 is a chain pilot part of the holder presser 45, and the width HS of the tip part 61 is approximately 4 mm smaller than the distance 6 between the shafts 62 of the chain 51. At the bottom dead center, it is inserted between the balls 62, 62, and the chain is Prevents slight movement in the x10 direction.

Reference numeral 63 denotes a retracting portion of the holder presser 45, which contacts and guides the circumferential portion of the rotary holder at the bottom dead center.

Reference numeral 64 is a presser pin, which is attached to the locking portion 6 in the punch plate 7.
5 has a head 66, and a spring 67 is biased in the direction of arrow x11, and at the bottom dead center, the tip 68 contacts the rotating blade 58 of the holder presser, pushing the elasticity of the spring 67. Adjust with screw 69.

Next, the structure of the interlude drive device 10 will be explained. 7. It is the main shaft and rotates in the ×IZ direction in synchronization with the press device.

Reference numeral 71 is a cam disk, which is attached to the main shaft 70', and a slide 73 is moved through the cam follower 72 by the arrow
move in a straight line in the direction.

Numeral 74 is a pin using a spherical bearing, one end of which is fixed to a disk 75, the other end of which is fixed to a slide 73, and swings in the direction of arrow x13.

Reference numeral 76 denotes a spring, which presses the disc 75 and disc 78 together with a bolt 77, and the friction plates 79, 80 due to the pressure force.
is pressing against the disk 81.

Reference numeral 82 denotes a shaft, and the disk 81 and ratchet plate 83 are fixed with a key 84, and the ratchet plate 93 is fitted with a pawl 85 so that a gear 86 can rotate only in the direction indicated by the arrow x14.

The indexing angle of this ratchet plate corresponds to the feed pitch in the mold of the jig. Even if the pin 74 tries to rotate the disk 86 in the opposite direction to the direction of arrow x14 by the swinging movement in the direction of arrow x13, the disk 86 is stopped by the ratchet plate 83 and pawl 85, and the friction plates 79, 80 With this, the disk 75 rotates. Reference numeral 87 denotes a chain wheel, which transmits the interlocking motion from the interlocking drive device 10 to the chain 41, and is attached to a bracket 9 by a shaft 88 and a pin 89, and the bracket 90 is fixed to the lower die holder 38 by a bolt 91. has been done. Next, the operation will be explained. The coiled wire 5 is straightened into a straight line by a straight cutter 6, cut into a fixed size, becomes a wire 9, and is sent to a detention box 12.

The wire rods 9 enter the grooves 12' of the groove wheel 13 one by one, and the groove wheel 11
3, it is transferred to the groove 15' of the timing belt 15 while being pressed by the presser block 14. The transferred wire rod 9 is held at a predetermined position by the presser block 19 and rotates with the rotation of the shaft 17, and the shutter 20, which opens and closes in synchronization with the rotation of the shaft 17, is opened and dropped into the groove 21, and the shutter 2 is dropped into the groove 21. close. As the green material feeding device 8 reciprocates in the direction of the arrow
is pressed and inserted into the hole of the rotary holder 57 of the press device 7. Since the push rod 28 is long and thin, a plurality of pairs of pressure units 23 are placed facing each other to prevent bending and align the rod, and it is held at a pressure greater than the insertion pressure of the wire 9 into the rotating holder 57. If abnormal pressure is applied, the arrow You can escape in the opposite direction to the 5 directions. The inserted wire 9 is supported by a steel ball 55, and the steel ball 55 is held by a ring 54 made of an elastic material or the like, applying appropriate pressure to the wire 9. Drive device 1
After the chain 41 moves at an appropriate pitch from the river, the upper mold holder 32 is lowered from the top dead center position in the direction of the arrow xll. The tip 61 of the chain pilot part 60 enters between the shafts 62 and 62 of the chain 51 to prevent slight movement of the chain and adjust the position, and then the retracting part 63 of the holder presser 45 is inserted into the circumferential part of the rotating holder 57. The rotary holder 57 is guided by the contact. Further, as the upper die holder 32 continues to descend, the presser pin 64 also descends and comes into contact with the rotating blades 58, 58 of the adjacent rotating holders 57, 57, causing them to rotate. However, when the rotating blades 58, 58 contact the upper end surface of the central portion of the chain guide, the rotation stops, and even if the upper mold holder 32 is lowered, the presser pin remains stopped by the spring 67. If the upper mold holder continues to descend, the elastic constant of the spring 49 is greater than that of the spring 46, so it hits the central end surface 59 of the chain guide 48 fixed to the rotary holder 57, and the holder presser 45 stops. When the upper die holder 32 further descends, the holder presser 45 and punch plate 34 contact each other and simultaneously descend. Therefore, the wire rod 9 is formed in a predetermined position at the same time that the upper die punches 35 and 36 hit the dies 40 and 41. When the upper mold holder 32 rises from this bottom dead center, the operation opposite to that of the lowering is repeated sequentially. When the upper mold holder completes one cycle from the top dead center to the bottom dead center and then to the top dead center, the interlocking motion from the interlocking drive device 10 is transmitted to the chain wheel 87, and the chain 41 moves by one pitch. The wire rods 9 having the desired shape obtained through the above operations are taken out one by one by the wire rod feeding device 11.
As another embodiment, as shown in FIG. 18, the rotation angle of the rotary holder can be changed by changing the central upper end surface 59 of the chain guide 48 supported by the rotary blades 58 of the rotary holder 57 into a convex portion 92 or a concave portion. can be changed arbitrarily.

As described above, the present invention consists of a punch provided on an upper die holder that can move up and down, and a die provided on a lower die holder that faces and is fixed to the punch, and forms a part of a wire rod. A rotary holder that is rotatable and has a hole in the center of the ball so that the wire can be placed between the upper mold holder and the lower mold holder, and that can hold the wire by inserting it into the hole; and this rotary holder. rotary blades protruding from the outer periphery of the wire rod and rotating the rotary holder when pressed in a direction perpendicular to the axial center of the wire rod; a holder conveyance unit that conveys the rotating holder in an intermittent manner after being molded; and the holder is provided so as to be biased in a direction away from the lower mold holder so that the wire held by the rotating holder is separated from the die. It is characterized by comprising a guide that guides the conveying section in the conveying direction, and a presser pin that is provided to press a rotary blade to rotate the rotary holder before molding the wire rod, so that the wire rod can be molded while rotating. , therefore, press processing is possible at high speed,
Moreover, stable production can be performed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the wire after forming, Fig. 2 A, C, and C are explanatory diagrams of the conventional press working method, and Fig. 3 is a forming apparatus using a press mold with a rotating mechanism in an embodiment of the present invention. 4 is a perspective view of the vicinity of the detention box, FIG. 5 is a sectional view of the wire feeding device, FIG. 6 is a perspective view thereof, and FIG. Figure 8 is a schematic plan view of the same essential parts, Figure 9 is a press apparatus according to an embodiment of the present invention, the left half is an elevation view at bottom dead center, the right half is an elevation view at top dead center, and Figure 10 is an elevation view at bottom dead center. 9
11 is a sectional view taken along line AA' in FIG. 9, FIG. 12 is a sectional view taken along line CC in FIG. 9, and FIG. 13 is a front view of the main parts of the press device. Fig. 14 is a side view of the main parts of the press device, Fig. 15 is a sectional view taken along line BB in Fig. 14, Fig. 16 is a plan view of a partial cross section of the interlocking drive device, and Fig. 17 is a sectional view of the same. , FIG. I8 shows another embodiment of the present invention, where A is a plan view and B is a plan view.
is a sectional view. 8... Wire feed device, 9... Wire rod, 10.
....Song drive device, 32...Top mold holder,
35, 36...Punch, 38...Lower mold holder, 40, 41...Die, 45...Holder presser, 46...Second spring, 48...Chain guide,
49...first spring, 51...chain, 52...
Attachment, 57... Rotating holder, 58...
... Rotating blade, 64 ... Presser pin, 67.
...Third spring. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 12 Figure 13 Figure 9 Figure 10 Figure 11 Figure 17 Figure 18 Figure 14 Figure 15 Figure 16

Claims (1)

[Claims] 1. A punch provided on an upper die holder that is movable up and down;
In an apparatus for forming a part of a wire rod, the die is provided on a fixed lower die holder facing the punch.
A rotary holder that is rotatable and has a hole at the center of the axis so that the wire can be inserted between the upper mold holder and the lower mold holder, and that the wire can be inserted into the hole and held; rotation after the wire is formed by the rotary blades at two locations symmetrical to the rotary holder axis, which are protrudingly provided and rotate the rotary holder when pressed in a direction perpendicular to the axial center of the wire; and the punch and the die. a holder conveyance section that intermittently conveys the holder; a guide that is held by the rotating holder and is biased in a direction away from the lower mold holder so as to separate the wire rod from the die and guides the holder conveyance section in the conveyance direction; A molding device using a press die with a rotating mechanism, which includes a presser pin that is movable up and down on the upper mold holder side and is provided to press a protrusion and rotate the rotary holder before molding the wire rod. 2. A molding device using a press mold with a rotating mechanism according to claim 1, wherein the guide has a surface that comes into contact with the rotating blade. 3. A molding device using a press die with a rotating mechanism according to claim 1, wherein the guide surface on which the rotary blade comes into contact has a convex portion or a concave portion in the conveying direction. 4. A patent claim in which several holes are made on the outer periphery of a rotating holder toward the center of the rotating holder, a solid object is placed inside the holes, and the outside of the hole is surrounded by an elastic material so that a wire can be held at the center of the rotating holder. A molding device using a press mold with a rotating mechanism according to item 1.