JPS60247429A - Wire rod working equipment - Google Patents

Abstract

PURPOSE:To fit a feeding speed to the characteristic of wire rod and to cut in optional length by feeding and cutting with holding the wire rod in the prescribed timing after the wire rod being subjected to a bending work in up-and- down and right-and-left directions also in right-angled direction by correcting device. CONSTITUTION:A wire rod W is pulled from the upper flow side to lower flow side with a gripper feeding device 5 by the revolution driving of a motor 6. A bend is given in the directions of up-and-down right-and-left by numerous correcting rolls 18 with the operation of an adjusting dial and adjusting screw in accordance with the characteristic of the wire rod W in the 1st correcting device 1, and bend further is given in the intersecting direction in right angles with the feeding direction in the 2nd correcting device 2 for the execution of correction. The wire rod W is then cut in the prescribed length with feeding continuously the wire rod W to the lower flow side by No.1, No.2 gripper devices 3, 4 clamping and unclamping the wire rod W in the prescribed timing, by performing a sliding movement with a plate cam as well as a reciprocating linear movement with a solid cam instead of the revolution movement in the gripper feeding device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wire processing device that straightens a wire and cuts the wire to a desired length after straightening.

Straight wires are used in a wide variety of applications, such as spindles for small motors and needles for needle bearings, and not only are a wide variety of them required, but they are also required in large quantities. In general, in order to increase the productivity of mass-produced parts, it is necessary to speed up the entire processing operation, and in order to efficiently perform multi-product production, it is necessary to replace and adjust processing machines to minimize downtime. Something that is easy to work with is useful.

By the way, when cutting, conventional wire processing equipment repeats the operation of stopping the wire, cutting it, feeding it for the length of the cutting length, and then stopping again and cutting. There are crank, one-way clutch, and cam types. With wire processing equipment that has a crank and one-way clutch type intermittent drive device, it is possible to change the wire feed rate, but it is not possible to obtain satisfactory results in terms of feed accuracy and feed speed, and it is difficult to maintain accuracy. However, wire processing equipment with a cam-type intermittent drive device was satisfactory in terms of feed accuracy and feed speed.
Send it! There were some difficulties in changing No. ll1.・Also, as mentioned above, in conventional wire processing equipment, feeding of the wire rod is stopped when cutting the wire rod, which is an impediment to improving the processing productivity of the wire rod, as well as stopping the feeding of the wire rod. As this process is repeated, the tension of the wire is affected by the acceleration each time, resulting in deterioration in accuracy as well as startup and
There was a drawback that high torque was required for stopping.

The present invention has been made in view of the above points, that is, the present invention improves the feeding accuracy of the wire rod, which is the object to be processed, and enables high-speed feeding. It can be adjusted appropriately and easily to suit the characteristics of the wire in a stepless manner, and the wire can be constantly fed and cut to the desired cutting length, improving the productivity of straightening the wire.
It is an object of the present invention to provide a wire processing device that does not cause deterioration in terms of accuracy of the wire and does not require high torque for feeding the wire.

Therefore, in order to achieve this objective, the wire processing device of the present invention clamps the wire inserted from the previous stage and sends it to the downstream side! However, there is a first wire straightening device that bends the wire vertically and horizontally with respect to the feeding direction of the wire using a large number of straightening rollers, and a first wire straightening device located downstream of this first wire straightening device. A large number of straightening rollers that clamp the wire and at least one straightening roller that bends the wire in a direction perpendicular to the feeding direction rotate the wire around the wire transport center to straighten the wire. and a second wire straightening device, which is further attached to a guide shaft provided downstream of the second wire straightening device along the wire feeding direction, and converts the rotational motion of the drive source into a three-dimensional cam. to make a reciprocating linear motion along the guide shaft, and
The wire rod is clamped by at least one of the first and second gripper devices that unclamp the wire rod at a predetermined tying by converting the rotational motion of the drive source into a swinging motion using a plate cam. At the same time, the cutter installed in the second gripper device located downstream from the first gripper device feeds the wire in a clamped state! a gripper feeding device that cuts the wire while cutting the wire, and a wire cutting length converting device that steplessly adjusts the moving distance of the first and second gripper devices along the guide shaft to set the desired cutting length of the wire. The present invention is characterized in that it is configured to include the following.

The present invention will be explained below with reference to an illustrated embodiment.

FIG. 1 is a front view showing the entire wire processing device according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a right side view of the same.
This wire processing device inserts, for example, a wire W wound around a bobbin WB into the device, clamps and feeds the wire W, and processes the wire in the vertical and horizontal directions with respect to the feeding direction (downstream direction) of the wire W. A first wire straightening device 1 that performs a bending process on the wire rod, and a first wire straightening device 1 located downstream of this first wire straightening device 1, which rotates around the transfer center of the wire rod W to straighten the bent wire while feeding it. a second wire straightening device 2 that straightens the wire by straightening the wire, and a wire transport path that is downstream of the second wire straightening device 2 and connects the wire transport centers of the first and second wire straightening devices 1.2; is provided with a first and a second gripper device 3, 4, etc., and continuously pulls and feeds the wire to the downstream side of the wire straightening device, and at least the first or second gripper device 3.4 A gripper feed device 5 that clamps and unclamps the wire W and cuts the wire W into arbitrary lengths in the clamped state, and a motor as a drive source that drives the second wire straightening device 2 and the gripper feed device 5. It is roughly composed of 6.

First, the first wire straightening device 1 will be explained with reference to FIGS. 4 to 6.

The support frame 7 has an H-shaped cross section with left and right side plates 7a, 7b and a horizontal plate 7C installed across these, and a horizontal plate 7.
A fixed block 8 and a movable Glock 9 are supported on C at the right end side in FIG. This movable Glock 9 can slide on the horizontal plate 7C along the guide frame 10.10 in a direction perpendicular to the feeding direction (transfer direction) of the wire rod W, and is on the right side facing the movable Glock 9. A flange 11 having a female thread on the inner periphery is fastened to the outer surface of the plate 7b, and a spring 13 is interposed between the adjusting screw 12 screwed into the flange IIK and the movable Glock 9. 9 is always a spring ■ Glock 8 fixed to 3
By rotating the adjusting screw I2, the compression l of the spring 13 can be adjusted to adjust the clamping force suitable for the wire diameter and material of the wire W.

Furthermore, a movable Glock moving lever 14 is attached to the end surface of the movable block 9 facing the fixed Glock 8, as clearly shown in FIG. As can be seen in FIG. 4, the shaft portion 14a of the movable Glock moving lever 14 is partially cut out and has a substantially semicircular cross section.
When the movable glock 9 is in contact with the setting surface 14b of the shaft portion 14a, the movable block 9 moves toward the fixed glock 8, and when it is in contact with the arc portion 14c, it is separated.

Further, on the fixed block 8, there is a feed roller 1 for the wire W.
5 is rotatably supported, and the movable Glock 9
At the top, a feed roller 16 of the same diameter is mounted and supported at the same height as the feed roller 15, and is formed around the entire circumference of the feed roller 15 and 16. wire holding groove 1
5a.

The wire W held between the wire rods 16a is fed downstream by rotating the wire side feed handle 17, which rotates the feed roller 16, clockwise in FIG.

A plurality of straightening rollers 18 are arranged in a staggered manner downstream of the pair of feed rollers 15 and 16, and each straightening roller 18 has a wire holding groove 18a formed all around the circumference. The correcting rollers are held by respective correction roller support blocks 19 that are slidably supported on the horizontal plate 7c of the support frame 7 along the direction in which the wire rods W are clamped, that is, the direction perpendicular to the feeding direction of the wire rods W. This correction roller support glock 19 has a split 119a inserted therein as shown in FIG. Combine and crush from the state 19. By opening a, stud 2
0 can be locked to the correction roller support glock 19 side. ti, this correction roller support block 19
Pins 19b and 19c are attached to both end faces of the
One of the pins 19b is a through hole formed in the support frame 7;
d, and the other pin 19c has a female threaded portion, which is threadedly engaged with the male threaded portion of the adjusting screw 21, and
A spring 23 is attached to C to bias the correction roller support glock 19, and the position of the correction roller 18 can be adjusted by operating the adjustment screw 21 according to the bending of the wire W. Note that above each correction roller 18,
An adjustment dial 22 is provided to adjust the height of the roller.
Due to the function of a, the wire rod W does not loosen as it is fed.

Next, the second wire straightening device 2 will be explained with reference to FIGS. 7 to 10.

A first hollow shaft 25 is supported on one of the support frames 24 with the horizontal direction being the axial direction.
A correction roller receiver 26 is detachably fixed to the platform portion 25a. This correction roller receiver 26 has a disk portion 26a.
and two side plate parts 26b, 26b extending perpendicularly to the disc part 26a.

A straightening roller 27 is pivotally supported between the two panels 26b, and a first panel consisting of two opposing panels 28a, 28a
An arm 28 is rotatably mounted around a correction roller 29 which is pivotally supported diagonally above the correction roller 27, and a correction roller 3° is attached to the rotating tip side of the first arm 280. is pivoted.

On the other hand, the other support frame 3 facing the above-mentioned one support frame 24
1 has an opening 31a with a female thread formed on the inner periphery,
A sleeve 32 having a thread formed on the outer periphery is screwed into the opening 31a, and an adjustment handle 33 is fixed to the row end of the sleeve 32. , this three 1
A second hollow shaft 34 is supported within the shaft 32, and the first hollow shaft 25 and the second hollow shaft 34 are opposed to each other on the same axis. Flange portion 34a of the second hollow shaft 34
A disc portion 35a of a correction roller receiver 35 similar to the correction roller receiver 26 of the first hollow shaft 25 is detachably attached to the. That is, the correction roller 36 is pivotally supported by the side plate portions 35j) and 35b of the correction roller receiver 35, and the second arm 37 consisting of two panels 37a, 37a is pivoted at a position diagonally above the correction roller 36. The second arm 37 is rotatably mounted around the supported correction roller 38, and the rotating tip of the second arm 37 connects to the rotating tip of the first arm 28 via the rotation shaft of the correcting roller 30. As shown in FIGS. 7 and 8, as the sleeve 32 is screwed, a common correction roller 30 is attached to the rotating tips of the first and second arms 28.37. is movable in the axial direction of the first and second hollow shafts 28 and 34, in other words, in a direction perpendicular to the feeding direction of the wire rod W.

Here, to explain the correction rollers 27.29.30.36.38 of the first and second arms 28.34, the ninth (
a) As shown in the figure, it is a substantially polygonal shape in which the radius of curvature of a part of the outer circumference is large, in this example it is a substantially square shape, and the outer circumferential surface is covered with wire rods around the entire circumference. A holding groove H is formed.

The pulley 39 fitted on the first hollow shaft 25 and the pulley 6a of the motor 6 are interlocked and connected via a belt v as shown in FIG. 1st
and the second hollow shaft 28.degree. 34 are configured to rotate together.

Next, the gripper feed device 5 will be explained with reference to FIGS. 11 to 14. Drive device 4 for rotating and 9 reciprocating linear movements
2, and is installed on the base B with a wire cutting length converting device 43 attached thereto.

The first and second gripper devices 3.4 are of substantially similar construction. The first and second gripper devices 3.4 are arranged such that the first and second gripper devices 3.4
As shown in FIGS. 1 to 13, a guide shaft 46 is supported at an upper position of a frame 45 fixed to the upper part of the housing 44 along the same direction as the wire feeding direction. Below this guide shaft 46, a swing rotation shaft 47 is provided substantially parallel to the guide shaft 46, and a metal 45a is connected to the frame 45.

It is rotatably supported via 45a. Furthermore, as shown in FIGS. 15 and 16, gripper glocks 48 and 49 are attached to the guide shaft 46 via a slide metal 50, and the gripper blocks 48 and 49 are attached to the guide shaft 46. They can each rotate in the circumferential direction of the shaft, and can slide together in the axial direction. The upper part of this gripper block 48, 49 has an opposing support piece 48.
A, 49a are formed, and a spring 51 compressed by a predetermined stitch is installed between the support pieces 48a, 49, and the swing rotation shaft 47 is attached to the lower part of the gripper glock 48, 49. As shown in FIGS. 15 and 16, the square shaft portion 47a is provided with clamping legs 48b and 49b which hold the square shaft portion 47a of the square shaft 47a. As shown in FIGS. 53 are attached, and these are offset from each other in the axial direction, and one is located below the axial center of the square shaft portion 47a, and the other is located above the axial center, and the above-mentioned clamping legs 48b, 49b A semi-cylindrical engagement groove 48C49c is formed on each inner surface of the square shaft portion 47a, that is, the inner surface that is in contact with the semi-cylindrical body 52, 53 of the square shaft portion 47a. The gripper glocks 48 and 49 are pivoted about the axis of the guide shaft 46 in opposite directions.

Further, a guide @4 is provided at the lower end of the gripper block 48.
8d is formed, and the first and second gripper devices 3
, 4, each guide 1N148d is equipped with a drive device 42, which will be described later.
The first and second swing arms 77 , 78 of the gripper glocks 48 , 49 are respectively engaged so that the gripper glocks 48 , 49 are reciprocated linearly along the respective guide shafts 46 .

Next, one attachment 54 is attached to the side attachment part 48e of the gripper Glock 48 on the first gripper device 3 side, as shown in FIGS. 17 and 18, and the side attachment part 49e of the gripper Glock 49 is attached The other attachment 55 is attached, and the attachment 5
One end of a spring member 56 having a U-shaped cross section is fixed to the spring member 55 , and one holder a 55 a for guiding and holding the wire W is formed on the lower surface of the attachment 55 . The other holding groove 56a is formed in.

Thus, the one and the other holding grooves 55a.

The wire W is guided between the gripper Glocks 48 and 568.
49 are rotated once in opposite directions, and the attachment
! 54 and 55 are shifted inward from each other, the wire rod W can be clamped by the biasing force of the spring member 56.

On the other hand, the gripper glock 48 on the second gripper device 4 side
．． As shown in FIG. 18, first and second cutters 57 and 58 for cutting a wire rod W made of multi-layered carbide material are attached to the side mounting portions 48a and 49a of 49. In addition, through holes 57a and 58a are formed in each cutter 57.5.8 to serve as a conveyance path for the wire rod W.

Further, one attachment 59 is attached to the side of the second cutter 58, and the other attachment 60 is attached to the gripper glock 48 side facing the attachment 59. A spring member 61 having a U-shaped cross section with one end fixed to the attachment non-toward 0 side is formed with the other holding groove 61a for guiding and holding the wire W, and the attachment 5
One of the holding grooves 59a is formed in the lower surface of the holding groove 9.

Thus, the one and the other holding grooves 59a.

61a and the through holes 5 of the first and second cutters 57 and 58
7a, 58a are located on the same axis, and when the wire W is guided between them and the gripper glocks 59, 60 are oscillated in mutually opposite directions, the attachments 59, 58a
, 60 shift inward from each other, the wire rod W is clamped by the biasing force of the spring member 61, and at the same time, the first and second cutters 57. '58 are shifted in opposite directions, the positions of the through holes 57a + 58a are relatively shifted, and the wire W is cut, and the cut wire W is connected to the through hole 57a.
The wire is discharged to the next stage through a discharge V-shaped groove 62a and a cut wire discharge path 62b provided on the downstream side of the wire.

Next, the drive device 42 for causing the first and second gripper devices 3.4 to perform rocking rotational motion and reciprocating linear motion will be explained with reference to FIGS. 11 to 14.

As shown in FIG. 1, the input camshaft 63 supported horizontally by the housing 44 is rotatable by the motor 6 via pulleys 63a, 6b and a bell 6c. The cams 64.65 and the first and second three-dimensional cams 66.67 are fitted.

The driven system operated by the rotation of the plate cams 64 and 65 is the same, and as shown in FIG. 19, the cam surface (34a
, 6!5a is in contact with a roller follower 6B'a which is rotatably supported by a direct-acting follower shaft 68, and this direct-acting follower shaft 68 is connected to the above-mentioned member through a sliding member 69. )・Uzing 4
4 so that it can slide vertically. Further, a three-guard 0 is attached to the upper part of the sliding member 69, and a spring 70a is interposed between the stepped portion 6.8b of the direct-acting follower shaft 68 and the inner bottom of the three-guard 0. The structure is such that preload always acts between the plate cams 64 and 65 and the roller follower 68a due to the biasing force of the spring 70a. A tip end 68e of the direct-acting follower shaft 68 has a semi-cylindrical shape, and a bushing rod 68c is attached to each swinging shaft 47 of the first and second gripper devices 3 and 4. Connected blocks 71, 72 are each connected.

Accordingly, as the plate cams 64 and 65 rotate, the vertical motion of the linear follower shaft 68 is converted into the swing rotational motion of the swing rotation shafts 47 and 47 via the connecting glocks 71 and 72.

Next, as shown in FIG.
7a to two cam followers 73 each rotatably supported on first and second turrets 73, 74, 73a,
74a, 74a sandwich the input camshaft 63 to convert the continuous rotational movement of the input camshaft 63 into the swinging rotational movement of the first and second hollow turret shafts 75 and 76 shown in FIG. First and second swing arms 77.78 are mounted on the upper portions of the first and second hollow turret shafts 75.76, as shown in FIGS. 15, 20 and 21. A slider 79 is slidably supported in swing arms 77 and 78, and a square Glock body 82 is mounted on a stand 80 fixed to the slider 79 via a spherical bearing 81. It is attached.

The Glock bodies 82 are slidably engaged in the engagement grooves 48d of the gripper Glocks 48 and 49 of the first and second gripper devices 3.4, respectively, and the three-dimensional cams 66,
．． 67 rotation of the first and second hollow turret shafts 75
．． The oscillating rotational movement of 76 allows the gripper device 3.4 to be reciprocated along the respective guide shaft 46.

Next, a wire rod cutting length converting device 43 that can arbitrarily set the cutting length of the wire rod W will be explained with reference to FIGS. 13, 20, and 21.

A threaded interlocking rod 83 is attached to the slider 79 in the swinging arms 77 and '78, and this interlocking rod 83 can rotate at the ends of the swinging arms 77 and 78. It is supported and screwed together with a gear 84 whose inner periphery is threaded.

In addition, at the bottom of the swinging arm 77, 78, the arm 77
．． A shaft 85 is rotatably supported substantially parallel to the shaft 85, and a gear 86 attached to the shaft 85 and the gear 8
4 is interlocked.

The pulley 85a attached to the shaft 85 and the boot IJ 87a of the shaft 87 rotatably supported at the lower part of the housing 44 are connected to the first and second hollow turret shafts 7.
5.76 is connected by a belt 88 housed inside.

When the shaft 87 is rotationally driven by a drive source (not shown), the Glock body 79 is slid through the gears 86 and 84, so that the block body 79 is moved from the center of rotation of the swing arm 77, 78. By adjusting the distance L (Fig. 20) to the center of the gripper glock 48, 49, the gripper glock 48, 49 can be slid along the guide shaft 46, and the reciprocating movement distance of the gripper glock 48, 49 can be adjusted. ing. That is, the second
Since the first and second cutters 57 and 58 of the gripper device 4 can be moved along the guide shaft 46, the cutting position of the wire W can be arbitrarily selected.

Next, the operation of the above configuration will be explained.

First, the wire rod 'W wound around the bobbin WB is the main wire rod t+n.
When passing the wire through the first wire straightening device 1, move the feed roller 16 on the movable Glock 9 side of the pair of feed rollers 15 and 16. After moving the Glock moving lever 14 in the direction away from the feed roller 15 and aligning the wire W with the wire holding grooves 15a, 16, a of the feed roller 15.16, the movable Glock moving lever 14 is moved away from the feed roller 15. Returning to the state shown in Fig. 4, the wire rod W is held between the feed rollers 15 and 16. By rotating the wire rod feed handle 17, the wire rod W is fed to the next group of straightening rollers 18, and further to the second wire rod straightening device 2.

When the wire W reaches the first inner shaft 25 of the second wire straightening device 2, adjust the sleeve 3 by rotating the handle 33.
2 in the state shown in FIG. 7, the wire W is passed from the first hollow shaft 25 to the second hollow shaft 34 through the spaces between the correcting rollers 27, 30° 36 and the correcting rollers 29, 38. Then, by slightly driving the motor 6, the wire W is passed through when the holding groove 55a of the attachment 55 of the first gripper device 3 and the holding groove 56a of the spring member 56 are released. The wire clamped between the holding grooves 55a and 56a on the side of the first gripper device 3 is sent in the feeding direction, and the wire rod is fed into the holding grooves 59a and 61 of the second gripper device 4.
After a has been released and further clamped the wire, the first and second gripper devices 3.4 are actuated at the timing shown in the timing diagram shown in FIG.

Next, the straightening and cutting operations of the wire rod W in this wire rod processing apparatus will be explained.

First, due to the rotational drive of the motor 6, the clipper feed device 5 pulls the wire rod W from the upstream side to the downstream side, whereby the wire rod W is transferred to the pair of feed rollers 1 of the first wire straightening device 1.
5.16 wire holding grooves 15a and 16a, the wire W is fed to the next group of correction rollers 18, and the wire diameter of the wire W is
By appropriately operating the adjustment dial 22 and adjustment screw 21 according to the material and the bending of the wire, the wire W is bent vertically and horizontally with respect to the feeding direction by a large number of straightening rollers 18, and then straightened. , and sent to the second wire straightening device 2.

Here, the adjusting screw 12 of the movable Glock 9 is used to adjust the clamping force suitable for the wire diameter and wire material, and the adjusting screw 21 of the correction roller supporting Glock 19 is used to adjust the bending force of the wire material.
The position of the correction roller 18 is adjusted accordingly. Further, the roller height adjustment dial 22 is used to adjust the height of the correction roller 18, and by the action of the split 19a formed on the correction roller support glock 19, the stud 20 is rotated to adjust the height, and then the wire rod is fed. It will not loosen as a result.

Next, the wire W in the second wire straightening device 2 moves the adjustment handle 32 from the state shown in FIG. 7 to the state shown in FIG. 8, and the straightening rollers 27, 30, 36 .
29. Apply a certain amount of bend to the wire W held between 38, stop the rotation of the adjustment handle 330, and pull the wire W in the downstream direction (feed direction, left direction in Figure 8). The first and second hollow shafts 2 are driven by the motor 6.
5.34 is rotated around the transfer center of the wire rod W to give uniform bending over the entire circumference of the wire rod W to straighten the wire rod W.

If the wire rod W is not straightened at this time, the adjustment handle 33 can be rotated without stopping the rotation of the first hollow shaft 240 to increase or decrease the bending gauge of the wire rod W. Adjustments can be made.

By the way, in the above-mentioned straightening work, if a small-diameter roller with a small radius of curvature is used as the straightening roller, as shown in Figure 9 (Bl), the so-called The elastic core C becomes smaller or disappears, and if it is plastically deformed as a whole, it will not become straight due to the stress distribution.For this reason,
It is necessary to use a roller with an appropriate radius of curvature. In this embodiment, the straightening roller 27.3 has a wire holding groove H on the circumference with a large radius of curvature and does not rotate individually.
By using 0.36.29.38, the wire W is moved by the straightening rollers 27.30, 36.29.3 during straightening.
8 while rotating, and is repeatedly bent during that time. That is, the wire W progresses in a helical motion sequentially from a portion near the rolls where the bending moment is large to a portion where the bending moment is small between the rolls. Therefore, as the wire rotates, the bending moment applied to the cross section of the wire W increases or decreases in direction and magnitude. As a result, as shown in FIG. 9 (seconds), a spiral residual stress distribution is generated in the cross section around the elastic core C, and the wire W is straightened.

In addition, each correction roller 27, 30, 3'6, 29.

If 38 is worn out, just rotate it by 90 degrees and correct the mounting.

Next, the wire rod W straightened by the second material straightening device 2
' is sent to the gripper feed device 5. 1st and 2nd
Gripper device #3.4 is operated at the timing shown in the timing diagram shown in FIG. Graph ■ in the figure is a timing diagram showing the reciprocating motion of the gripper lock 48, 49 of the first gripper device 3 in the wire rod feeding direction, and graph ■ is a timing diagram showing the gripper lock 4 of the first gripper device 3.
8: A timing diagram showing the operation of clamping and unclamping the wire rod W by 149, graph 2 is a timing diagram showing the reciprocating movement of the gripper block 48, 49 of the second gripper device 4 in the wire rod feeding direction, graph @ These are timing diagrams showing the operations of clamping, unclamping, and cutting the wire W by the gripper Glocks 48 and 49 of the second gripper device 4.

Therefore, the operating states of the first and second gripper devices 3.4 are shown in graphs ①, ②, and ② in Fig. 22.

Based on (1), the explanation will be made in accordance with the order of the time axis σ) to (2).

On the time axis ■, the gripper glocks 48 and 49 of the first gripper device 3 start moving in the feeding direction of the wire rod W, as shown in graphs ■ and ■, and the gripper glocks 48 and 49 of the first gripper device 3 begin to move in the feeding direction of the wire rod W, and are also fed from the second wire rod straightening device 2 side in the previous stage. They begin to move in the direction opposite to each other due to the rotation of the swing rotation shaft 47, that is, in the direction in which the wire rod W is clamped. At this time, as shown in the graphs [Yes] and @, the gripper glocks 48 and 49 of the second gripper device 4 have already clamped the wire W, and the gripper glocks 48 and 49 of the first gripper device 3
It is moving in the feeding direction of the wire rod W at the same speed as the moving speed of.

On the time axis {circle around (2)}, the gripper blocks 48 and 49 of the first gripper device 3 continue to move in the wire rod feeding direction, and also continue to move in the direction to clamp the wire rod W.

(Depending on the wire diameter, the wire is already clamped, but it moves further in the direction of clamping. This is due to the spring member 56
This was made possible by using . ) At this time, the gripper glocks 48 and 49 of the second gripper device 4 are 1
The wire rod is moving in the feed direction 9 with the lfJ material W clamped, but it begins to move in the direction of unclamping.

On the time axis (3), the clipper glocks 48 and 49 of the first gripper device 3 are feeding the wire W in the feeding direction while clamping the wire W, regardless of the wire diameter. Note that the movement of the gripper blocks 48 and 49 in the clamping direction is stopped. Furthermore, the gripper blocks 48 and 49 of the second gripper device 4 continue to move in the direction of feeding the wire W, and also continue to move in the direction of unclamping the wire W. (Depending on the wire diameter, the wire rod W has already been unclamped.) On the time axis ■, the gripper blocks 48 and 49 of the first gripper device 3 clamp the wire rod W.
is being sent in the feed direction.

Also, the gripper glock 48 of the second gripper device 4.
Regardless of the wire diameter, the wire rod 49 is in an unclamped state and begins to move in the return direction with respect to the wire feed direction.

On the time axis (2), the gripper glocks 48, 49 of the first gripper device 3 continue to be in the state on the time axis (2). Second
The gripper clocks 48 and 49 of the gripper device 4 stop moving in the unclamping direction and continue to move in the return direction with respect to the wire feeding direction.

On the time axis ■, the gripper blocks 48, 49 of the first gripper device 3 continue to be in the state of the time axis ■. Second
The gripper 7'' locks 48, 49 of the gripper device 4 stop moving in the return direction with respect to the feeding direction of the wire in a state in which the wire rod W is reel-clamped, and begin to move in the feeding direction.

On the time axis ■, the gripper blocks 48, 49 of the first gripper device 3 continue to be in the state of the time axis ■. Second
The gripper glocks 48 and 49 of the gripper device 4 continue to scrape in the feeding direction and begin to move in the direction of clamping the wire W.

On the time axis (3), the gripper glocks 48 and 49 of the first gripper device 3 begin to move in the unclamping direction while moving in the wire feeding direction. (However, the wire rod W is clamped.) The gripper glocks 48 and 49 of the second gripper device 4 continue to move in the direction of feeding the wire rod, and also continue to move in the direction of clamping the wire rod. The wire W is clamped and cut simultaneously by the first and second cutters 57 and 58.) On the time axis ■, the gripper glocks 48 and 49 of the first gripper device 3 move in the wire feeding direction while The gripper glocks 48 and 49 of the second gripper device 4 continue to move in the direction of unclamping (the wire is almost in an unclamped state), with the wire W being clamped.

On the time axis O, the gripper blocks 48 and 49 of the I-th gripper device 3 begin to move in the return direction with the wire W being unclamped. (However, the movement in the direction of unclamping continues.) The gripper blocks 48 and 49 of the second gripper device 4 continue to be in the state of time axis (3).

On the time axis (3), the gripper blocks 48 and 49 of the first gripper device 3 stop moving in the unclamping direction, but continue to move in the returning direction. The gripper glocks 48, 49 of the second gripper device 4 continue in the state of time axis ■.

At time axis O, the clipper glocks 48, 49 of the first and second gripper devices 3.4 are returned to the state at time axis -3.

In the sequence of operations of the first and second gripper devices 3.4 described above, the gripper glock 4 of the first gripper device 3
At least one of the attachments 54.55 of 8.49 or the attachments 59.60 of the gripper locks 48.49 of the second gripper device 4 is always clamping the wire W in the direction in which the wire W is transferred. sending. In addition, in order to cut the wire rod W to a desired length, the attachment levers 59 and 60 of the second gripper device 4 having the cutters 57 and 58 are placed in the unclamped state, and the wire rod W
The cutter 57. of the second gripper device 4 is clamped by the attachment member 54. The number exceeding 58 is the cutting length of the wire W. Additionally, a cam is used to adjust the timing between the first and second
Although the timing cannot be changed because the configuration is given to the gripper device 3.4 of Can be set.

In addition, the gripper Glock 48.4 of the gripper devices 3 and 4
9 can be adjusted relatively steplessly during operation by moving the fulcrums of the first and second swing arms 77 and 78, that is, the position of the slider 79. By operating the cutter 57.58 of the wire rod W, in other words, the cutting length can be adjusted.You can freely change the cutting length of the wire rod W manually or automatically during operation, and cut the wire rod W.
You can cut it to the desired length while feeding it.

As explained above, according to the present invention, the first wire straightening device bends the wire in the L downward direction and the left and right direction with respect to the feeding direction of the wire, and the second wire straightening device The straightening roller rotates around the wire transfer center to straighten the wire while feeding it, and then moves in a reciprocating linear motion along a guide shaft via a three-dimensional cam, and makes an oscillating motion via a plate cam. By doing so, the wire is fed to a gripper feed device having first and second gripper devices that clamp and unclamp the wire at predetermined timing, and the wire is clamped by at least one gripper device and continuously fed to the downstream side. At the same time, the cutter of the second gripper device cuts the wire while feeding it in a clamped state, and the cutting length is set by changing the moving distance of the first and second gripper feeds. The feeding gripper device is operated via a cam, and the wire rod feeding accuracy is good. High-speed feeding is possible, and the feeding speed can be adjusted steplessly to suit the characteristics of the wire rod with ease. In addition to being adjustable, the wire can be cut to the desired cutting length while always being fed with the wire clamped, and there is no need to repeatedly feed and stop the wire each time the wire is cut, which is the case in the past. A high torque is not required for feeding the wire rod, and the wire rod does not suffer from deterioration in terms of accuracy. Therefore, the productivity of straightening the wire rod and the accuracy of straightening the wire rod can be significantly improved.

In addition, in this invention, if the straightening roller of the second wire straightening device is made into a polygonal shape with a large radius of curvature in a part of the IA eyebrow, the cross section of the wire has a spiral shape centered on the elastic core. It is possible to generate a residual stress distribution, which has the effect of reliably straightening the wire.

[Brief explanation of drawings]

FIG. 1 is a front view showing the whole of one embodiment of the wire processing device according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a right side view of the same, and FIG. Top view of wire straightening device, fifth
The figures are a partial sectional view taken along line B-n in FIG. 4, FIG. 6 is an explanatory view of the support block of the correction roller, and FIGS.
The figures show the second wire straightening device, FIG. 7 shows the wire rod being inserted, FIG. 8 shows the operation during straightening, FIG. 9 (2) is an enlarged view of the straightening roller, and FIG. (B) is an explanatory diagram showing the stress distribution in the cross section of the wire after straightening with the straightening roller of the second wire straightening device, FIG. 10 is a perspective view of the main part of the second wire straightening device, and FIG. 11 is Top view of the gripper feed device, first
2 is a cross-sectional view taken along line G in FIG. 11, FIG. 13 is a cross-sectional view taken along line V-■ in FIG. 15 is a side view of the gripper device, FIG. 16 is an exploded perspective view thereof, FIG. 17 is an exploded perspective view showing the attachment of the first gripper device, and FIG. 18 is an attachment of the second gripper device. FIG. 19 is an explanatory diagram showing a swinging rotation mechanism using a plate cam, FIG. 20 is a side sectional view of the wire cutting length converting device, and FIG. 21 is a view of the same plane. 22 are timing diagrams illustrating the operation of the clipper feed device. 1.2... first and second wire straightening devices, 3, 4...
first and second gripper devices, 5... gripper field device, 6... motor, 42... drive device, 43...
... Wire rod cutting length conversion device 0 Patent applicant Sankyo Seisakusho Co., Ltd. Figure 19 Figure 20 /

Claims (2)

[Claims] (1) A first wire straightening device that clamps the wire inserted from the previous stage and feeds it downstream while bending the wire vertically and horizontally with respect to the feeding direction of the wire using a large number of straightening rollers. and a number of straightening rollers that are located downstream of the first wire straightening device and that clamp the wire, and at least one straightening roller that bends the wire in a direction perpendicular to the feeding direction. a second wire straightening device that rotates around the wire rod feeding center to straighten the curve 9 of the wire; The rotary motion of the drive source is converted by a three-dimensional cam to perform reciprocating linear motion along the guide shaft, and the rotary motion of the drive source is converted by a plate cam to cause oscillation. The wire is clamped by at least one gripper device of the first and second gritting devices, which clamp and unclamp the wire side at predetermined timing by dynamic movement, and continuously feeds the wire to the downstream side. A gripper feed device that feeds and cuts the wire rod in a clamped state by a cutter provided on a second gripper device downstream of the first gripper device, and a gripper feed device that cuts the wire while feeding it in a clamped state, and 1. A wire processing device comprising: a wire cutting length converting device that steplessly adjusts the moving distance of the wire rod to set a desired cutting length of the wire rod. (2) The wire processing device according to claim 1, wherein the straightening roller of the second wire straightening device has a polygonal shape with a large radius of curvature in a part of the outer circumference.