JPH0756284Y2 - Wire feeding device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying a fixed amount of wire to a wire processing apparatus such as a forging machine.

[0002]

2. Description of the Related Art A forging machine for forming bolts, nuts, and various other parts uses a material supplied from the side of a machine base to rough and refine it at a forging station equipped with a die and a punch facing each other. In order to continuously produce a product of a predetermined shape by forging in a stepwise manner, in the forging machine, a wire rod made of a bar material or a coil is wound around the side of the machine base. Wire rod is set and is fed to the machine base by a pair of one or more stages of feed rollers that nip the wire rod and rotate, and the wire rod is cut into a certain size from the tip on the machine base side at a forging station. It is configured to be loaded into.

By the way, in the above-mentioned cutting of the wire rod on the machine base side, normally, a cut wire rod having a certain size is always obtained by cutting the supplied wire rod in a positioning state in which the tip of the wire rod is brought into contact with a stopper. . Therefore, when the wire is fed by the feed roller, the feed amount is set to be slightly excessive so that the tip of the wire reliably contacts the stopper. Therefore, the feed roller may rotate even though the tip of the wire comes into contact with the stopper. In this case, the feed roller slips and rotates with respect to the wire. May enter as a scratch and remain on the surface of the product, leading to a decrease in product quality.

As a technique for solving this problem, for example, in Japanese Utility Model Laid-Open No. 2-44916, a ring-shaped feed roller having an inner diameter larger than the outer diameter of a disc body provided on a roller shaft is provided to form a disc. A feed roller device is disclosed in which an outer peripheral surface of a body and an inner peripheral surface of a feed roller are fitted in a concavo-convex shape on the pressing side of a wire.

According to this, since the rotational force of the roller shaft is transmitted at the portion where the disk body and the feed roller are fitted in the recess and protrusion, when the wire comes into contact with the stopper and stops, the feed roller and the feed roller are stopped. The disc body slips and rotates with respect to the feed roller due to the frictional force acting between the disc and the wire. Therefore, the feed roller does not rotate, and it is possible to prevent the surface of the wire from being scratched.

[0006]

By the way, in the above technique, the frictional force at the concavo-convex fitting portion between the feed roller and the disc body is set to a size that can reliably feed the wire rod, and the wire rod is stopped. It is necessary to make the slip rotation of the disc body relative to the feed roller smooth so as to be smaller than the frictional force acting between the wire rod and the feed roller at that time. However, even if such a condition is satisfied when the feed roller is set, wear due to slip rotation occurs in the feed roller and the disc body due to long-term use,
Since the frictional force changes and the frictional force also changes depending on the conditions such as the material of the wire rod, the above technique tends to cause inaccurate feeding of the wire rod.

[0007] Therefore, an object of the present invention is to provide a wire rod supply device capable of coping with a change in frictional force due to wear and the like and always ensuring the wire feed.

[0008]

That is, the present invention is directed to at least a pair of opposed members supported by roller shafts.
Is a device for sandwiching a wire rod by a feed roller and feeding the wire rod to a predetermined wire rod processing position by rotation of these feed rollers, which is ring-shaped and has a cross-sectional view V on its inner peripheral surface.
The taper surface is formed from both sides to form a letter shape.
Roller and the roller shaft fixed to the roller shaft
A tapered surface is formed to match the tapered surface on one side of the feed roller
The first ring member and the roller shaft in the axial direction.
The other of the feed rollers is movably supported and is provided on the outer periphery.
A second ring having a tapered surface that matches the side tapered surface
Member and the second ring member is fastened to the first ring member side
Both the tapered surfaces of the feed roller and the first and second ring portions
Fastening bolts that give frictional resistance to each tapered surface of the material
If, when the forcible stopping force is exerted on該線material into the feed of the wire by the rotation of the feed roller, without causing a slip between the該線member and the feed roller, the relative said feed roller 1 , The first ring member side of the second ring member by the fastening bolt so that the second ring member slip rotates
And an adjusting bolt for adjusting the tightening amount to the.

[0009]

According to the above construction, the second bolt is fastened by the fastening bolt.
Tighten the ring member to the side of the first ring member and
Both taper surfaces of the la and the taper surfaces of the first and second ring members
A frictional resistance is provided between the first and second rings with respect to the feed roller when a forced stopping force acts on the wire while the wire is being supplied by the rotation of the feed roller.
Make sure that the above-mentioned fastening bolts
Adjust the tightening amount of the 2 ring members to the 1st ring member side
Since the adjustment bolt is installed, tightening with the adjustment bolt
When the wire rod is forcibly stopped by adjusting the bolt tightening amount , make sure that the first and second ring parts
The material, that is, the roller shaft can be slip-rotated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

In the press molding machine 1 shown in FIG.
Is provided with a ram 3 which is reciprocally driven by a crank mechanism (not shown), a plurality of punches 4 to 4 are attached to the front surface of the ram 3, and the punches 4 to 4 are attached.
4 to 4, a plurality of dies (not shown) facing the punches 4 to 4 are provided in the die block 5 arranged to face the punching stations 4 to 4 and the die forming station S. It is formed.

On the other hand, behind the forging station S, a wire rod support mechanism 6 in which a wire rod bundle X wound into a coil is loaded.
Is provided. The wire rod support mechanism 6 is not particularly limited to the structure shown in FIG. 1, but is provided with a base 8 movable along the guide rails 7, 7 and rotatable and vertically movable on the base 8. And a supporting table 9 for supporting the wire bundle X described above.
The wire rod x drawn from is supplied to the forging station S side through the wire rod feeding device 10 through the wire rod inlet 11 provided at the rear part of the machine base 2 of the forging machine 1.

On the side of the forging station S, the supplied wire rod x is cut into a certain size by a cutter with its tip abutted against a stopper (not shown). The punches 4 to 4 are conveyed in parallel to each other, and in the meanwhile, the punches 4 and the dies are stepwise forged from rough to fine to form a product having a predetermined shape.

In that case, in the wire rod supply device 10 described above,
A pedestal 12 is provided, and a plurality of (two in the drawing) feed roller pairs consisting of a pair of upper and lower feed rollers 13 and 13 are provided in the wire transfer direction on the side surface thereof. From the feed roller 1
It is configured such that the wire rods X are drawn from the wire rod bundle X by intermittent rotation of 3, 13 and supplied to the wire rod inlet 11.

As shown in FIGS. 2 and 3, the feed rollers 13 and 13 are rotatably supported on the gantry 12, and the upper and lower roller shafts are rotated by an intermittent drive mechanism (not shown) inside the gantry 12. 14, but in that case, the inner peripheral surfaces of the feed rollers 13 and 13 are substantially the same.
Tapered surface 13 from both side surfaces so that it becomes V-shaped in cross section
a and 13b are formed, and are composed of a ring member having a semicircular wire rod guide groove 15 formed on the outer peripheral surface,
The roller shaft 14 is fitted and fastened and attached.

That is, the flange portion 16 is provided at the tip of the roller shaft 14 and the convex base portion 17 is formed at the tip surface of the flange portion 16. Then, as shown in FIG. 3 and FIG.
Two locating pins 18 at 180-degree opposite positions sandwiching the
18 is attached by screwing, a plurality of screw holes 19 to 19 are formed in an annular position centered on the convex base portion 17, and a plurality of screw holes 20 (FIG. (Refer to FIG. 4) is formed, and the fastening bolts 21 to 21 are screwed into these screw holes 20 in a protruding state.

On the other hand, as ring-side members for fastening the feed roller 13, two ring members 22 and 23 (hereinafter, referred to as a first ring member 22 and a second ring member 23) fitted to the convex base portion 17 are used. ), And a contact plate 24 and a cover plate 25 that are applied to the second ring member 23.

The above-mentioned first and second ring members 22, 2
Tapered surfaces 22a and 23a are formed on the outer peripheral surfaces of the ring member 3 and the ring members 22 and 23, respectively.
The tapered surfaces 22 of both ring members 22 and 23 when fitted to 7
a and 23a, the feeding roller 13 has a substantially V- shaped
A substantially V-shaped annular groove is formed so as to match the superfaces 13a and 13b .

Further, the first and second ring members 22, 23
There are two pin holes 2 each corresponding to the positioning pins 18, 18 of the flange portion 16 of the roller shaft 14.
6 and 27 are provided through the first ring member 22,
The same number of fixing bolt through holes 28 (see FIG. 4) are formed so as to face the plurality of screw holes 19 formed in the flange portion 16, and the fixing bolt through holes 2 are formed in the second ring member 22.
A through hole 30 into which the head of the bolt 29 passed through 8 is fitted is formed.

Further, as shown in FIG. 2, on the backing plate 24, fastening bolts 21 to 2 screwed to the above-mentioned convex base portion 17 are screwed.
1. A plurality of fastening bolt through holes 33 to 3 through which the head of 1 can be inserted
3 is opened, and tightened with fastening bolts 21 to 21 to the tip surface of the convex base 17 through the second ring member 23 .
A plurality of adjustment bolt through holes 35 to 35 for abutting the adjustment bolts 34 to 34 for adjusting the stroke amount are opened. Therefore, the fastening bolts 21 to 2 are attached to the second ring member 23.
1 and a screw hole 3 for inserting and screwing the adjusting bolts 34 to 34 into the through hole 36 (see FIG. 5).
7 (see FIG. 4) are opened.

Further, on the backing plate 24, the above-mentioned convex stand portion 17 is provided.
A plurality of fastening bolt through holes 33 to 33 through which the heads of the fastening bolts 21 to 21 screwed in are inserted, and the fastening force adjustment is performed on the tip surface of the convex base 17 through the second ring member 23. A plurality of adjusting bolt through holes 35 to 35 for abutting the bolts 34 to 34 for use with are provided. Therefore, the fastening bolts 21 to 21 are attached to the second ring member 23.
Through hole 36 (see FIG. 5) for inserting the screw, and screw hole 37 for inserting and screwing the adjusting bolts 34 to 34
(See FIG. 4) and are opened.

In that case, the former fastening bolt through holes 33 to
The shape of 33 is such that a large hole portion 33a having a diameter larger than the head diameter of the fastening bolt 21 passing through the hole 33 and a small hole portion 33b having a diameter slightly larger than the bolt shaft diameter communicate with each other. This will be described in detail later, but when the second ring member 23 is connected to the contact plate 24 and the cover plate 25, the contact plate 24 is rotated to move the roller shaft 14 of these members 23, 24, 25. When the wire rod x is fed in the direction of the arrow a in FIG. 2, the small hole 33b is located on the arrow direction side. ing. Then, in preparation for such rotation, the latter adjusting bolt through holes 35-3
The shape of No. 5 is an arc-shaped oblong hole having an angle within the range in which the above rotation is allowed. A handle 38 is attached to the backing plate 24 using the bolt 32 for connecting the plate 24 and the cover plate 25 to the above-described rotation operation.

Next, a method of attaching and detaching the feed roller 13 will be described.

First, as shown in FIG. 5, with the fastening bolts 21 screwed into the respective screw holes 20 provided in the convex base portion 17 of the roller shaft 14 by a predetermined amount, as shown in FIG. 22 is positioned by fitting the positioning pin 18 and the pin hole 26 , is attached to the convex base portion 17, and is shown in FIG.
Screw the fixing bolt 29 from the bolt through hole 28 of the first ring member 22 to the screw hole 19 of the flange portion 16 as,
The first ring member 22 is fixed to the roller shaft 14. At this time, the fixing bolt 29 is screwed in by covering the bolt head with a cap 39 so that the cap 39 functions as a positioning pin for the second ring member 23.

On the other hand, the backing plate 2 is previously attached to the second ring member 23.
4 and the cover plate 25 are attached by bolts 32, 32 to block these members 23, 24, 25 and screw holes 3 provided in the second ring member 23.
7. From the bolt through hole 35 of the contact plate 24 to the adjustment bolt 34
Is screwed in so that the tip ends of these adjusting bolts 34 to 34 are projected to the back side of the second ring member 23 by a predetermined amount.

Then, from the state where the feed roller 13 is fitted in the first ring member 22, the positioning bin 18 inserted into the pin hole 26 of the first ring member 22 is inserted into the pin hole 27 of the second ring member 23. Mating and cap 3 described above
9 is fitted in the through hole 30, and the fastening bolt 21 screwed to the tip surface of the convex base portion 17 in the contact plate 24.
21 to 21 are large hole portions 33b to 33 in the fastening bolt through holes 33 to 33 through the through holes 36 of the second ring member 23.
The above block is attached to the convex base 17 so as to insert b, and then the contact plate 24 and the cover plate 25 are rotated by the handle 38 in the direction opposite to the arrow a direction in FIG. Of the fastening bolts 21 to 21 after shifting the shaft portion of the bolt to the small hole portion 33b of the bolt through hole 33.
Tighten.

By this tightening, the tip ends of the adjusting bolts 34 to 34 come into contact with the tip surface of the convex base portion 17, so that the contact plate 24 is attracted to the convex base portion 17 side. , The second ring member 23 is also attracted to the first ring member 22 side.
The feed roller 13 is sandwiched between the
V- shaped double taper 13a, 13b, and first and second
The tapered surfaces 22a and 23a of the ring members 22 and 23 are in close contact with each other, and the three members 13, 22 and 23 are fastened. Therefore, if the roller shaft 14 is rotated, the feed roller 13
And the first and second ring members 22, 23 rotate integrally,
Each guide groove 15 in the upper and lower feed rollers 13,
The wire rod x passing through 15 is fed.

When the feed roller 13 is removed, the fastening bolts 21 to 21 for pulling the contact plate 24 toward the convex base 17 are slightly loosened, and then the handle 38 is pulled.
When the contact plate 24 is rotated in the direction of the arrow a by the rotation of the plate 24 and the cover plate 25, the fastening bolts 21 to 21 described above are transferred to the large hole portion 33a in the fastening bolt through holes 33 to 33. As a result, the second ring member 22, the contact plate 24, and the cover plate 25 can be pulled out all at once from the convex base portion 17, and the feed roller 13 and the first ring member 22 can be removed in the reverse order of the mounting. .

By the way, the fastening between the feed roller 13 and the first and second ring members 22 and 23 is, as is apparent from the above description, the adjusting bolt protruding from the second ring member 23 as shown in FIG. Fastening bolt 21 in a state where the tips of 34 to 34 are in contact with the tip surface of the convex base portion 17.
It is done by tightening ~ 21. Therefore, the second
If the protrusion amount of the adjusting bolts 34 to 34 from the ring member 23 is adjusted to change the distance between the first ring member 22 and the second ring member 23 in the tightened state, the tightening force also changes, and Tapered surface 2 of second ring members 22, 23
2a, 23a and V- shaped tapered surfaces 1 of the feed roller 13
The frictional resistance with 3a and 13b can be adjusted.

Therefore, when the tip of the wire rod x fed by the rotation of the feed roller 13 comes into contact with the stopper and the feed rod 13 continues to rotate even though the wire rod x has stopped, The surface pressure is set so that the frictional force acting between the first and second ring members 22 and 23 and the feed roller 13 becomes smaller than the frictional force acting between the wire rod x and the feed roller 13 when the wire rod is stopped. If the wire rod is stopped, the first and second feed rollers 13 can be stopped by stopping the wire rod.
The ring members 22 and 23 rotate in a slip manner, and the feed roller 13 does not rotate. Therefore, the feed roller 13 does not slip and rotate with respect to the wire rod x, the wire rod x is not scratched, and the product quality is improved.

Even if the surface pressure is adjusted as described above, since the first and second ring members 22 and 23 slip and rotate with respect to the feed roller 13, the feed roller 13 or the ring may be used for a long period of time. V-shaped surface 1 of members 22 and 23
3a and the taper surfaces 22a and 23a are worn, the surface pressure or frictional force is changed, and the feeding of the wire rod x becomes uncertain. Even in that case, the adjusting bolts 34 to 34 can be adjusted by rotating operation so that the surface pressure or the frictional force becomes an appropriate value. Therefore, it is necessary to reset the setting so that the wire feeding can be surely performed by coping with the above wear. You can This is also the case when the frictional force between the feed roller 13 and the wire rod x changes due to a change in the material of the wire rod x and the like, and the frictional force between the feed roller 13 and the ring members 22 and 23 against the change in the frictional force. To
It is possible to reliably feed the wire rod, and when the wire rod is stopped by the stopper, the ring members 22 and 23 can be surely adjusted to slip and rotate with respect to the feed roller 13.

The adjusting bolt 34 which has been adjusted as described above.
As shown in FIG. 4, the lock nut 40 is screwed from the contact plate 24 side to prevent the lock nut 40 from loosening.

Although the above embodiment has been described by taking the apparatus for supplying the wire rod to the forging machine as an example, it goes without saying that the present invention can be applied to a wire rod processing apparatus other than the forging machine.

[0034]

As is apparent from the above description, according to the present invention, the second ring member is connected to the first ring by the fastening bolt.
Tighten it to the member side and attach it to the inner surface of the ring-shaped feed roller.
Both tapered surfaces and the tapered surfaces of the first and second ring members
A frictional resistance is provided between the first and second rings with respect to the feed roller when a forced stopping force acts on the wire while the wire is being supplied by the rotation of the feed roller.
Tighten the above so that the member, that is, the roller shaft
To the side of the first ring member of the second ring member by the connecting bolt
Since the adjusting bolt for adjusting the tightening amount is provided, for example, wear of the roller shaft and the feed roller due to the slip rotation occurs due to long-term use, and the frictional force acting between the roller shaft and the feed roller changes, or When the frictional force between the wire rod and the feed roller changes due to a change in the wire rod material, the frictional force between the feed roller shaft and the roller shaft can be reliably fed, and the feed roller can be stopped when the wire rod is forcibly stopped. In contrast, the size can be adjusted so that the roller shaft smoothly slips.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a press forming machine equipped with a wire rod supply device according to the present invention.

FIG. 2 is a front view of a feed roller in the wire rod supply device.

FIG. 3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a cross-sectional view of the fastening bolt portion in FIG.

6 is a front view of the tip of the roller shaft in FIG.

FIG. 7 is an explanatory diagram of an attaching / detaching operation of a feed roller.

[Explanation of symbols]

 10 Wire Material Supply Device 13 Feed Roller 14 Roller Shaft 21 Fastening Bolt 22 First Ring Member 23 Second Ring Member 22a, 23a Tapered Surface 34 Adjustment Bolt x Wire Material

Claims (1)

[Scope of utility model registration request] 1. A sandwich at least the wire by a pair of opposing feed rollers are respectively supported to the roller shaft, a device for supplying the wire to a predetermined wire processing position by the rotation of the feed roller, the ring In the form
The inner peripheral surface of the tape is tapered from both sides so that it has a V-shaped cross section
It is fixed to the feed roller with a flat surface and the roller shaft.
The outer circumference matches the taper surface on one side of the feed roller.
The first ring member having a tapered surface that
Is supported so that it can move in the axial direction with respect to
The taper surface that matches the taper surface on the other side of the feed roller
The formed second ring member and the second ring member
Tighten to the side of the
Frictional resistance between each tapered surface of the first and second ring members
A fastening bolt to be applied, and when a forced stopping force acts on the wire rod during the supply of the wire rod by the rotation of the feed roller,
Without causing a slip between the該線member and the feed roller,
A second ring member using the fastening bolt so that the first and second ring members slip and rotate with respect to the feed roller.
And an adjusting bolt for adjusting the amount of tightening of the first ring member to the first ring member side .