JPH0415367Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a wire stand for a spring manufacturing machine.

(Purpose of the invention) The purpose of this invention is to provide a wire stand for a spring manufacturing machine that can smoothly unwind a bundle of wire rods, which are spring materials, in synchronization with the spring manufacturing machine. be.

(Example) This invention will be described below based on an example shown in the drawings.

1 to 3, a through hole 3 is formed in the top plate 2 of the base 1, and the through hole 3 is formed in the top plate 2 of the base 1.
so that the drive shaft 5 protrudes upward through the
A motor 4 is attached to the lower surface of the top plate 2 with its axis being vertical. A rotary shaft 7 is fitted onto the drive shaft 5 , a rotary disk 8 is fixed to the rotary shaft 7 , and the rotary disk 8 is supported by the top plate 2 via a thrust bearing 9 . A relative rotary disk 10 is fitted onto the rotary shaft 7 so as to be relatively rotatable on top of the rotary disk 8, and a friction disk 11 made of natural leather or the like is placed between the rotary disk 8 and the relative rotary disk 10.
is interposed, and this friction disk 11 is attached to the rotary disk 8 side. A thrust bearing 13, a plurality of elastic wave washers 14, and a washer 15 are fitted to the rotating shaft 7 in the listed order so as to be positioned above the relative rotary disk 10.
The upper threaded portion 7 of the washer 15 projects upwardly.
A nut 16 is screwed into a, and this nut 16
The elastic force of the wave washer 14 is adjusted according to the tightening force of the friction plate 11 of the relative rotary plate 10.
The pressing force can be adjusted. The wave washer 14 is a type of spring that waves up and down along the circumferential direction. As is clear from this description, it goes without saying that a spring such as a coil spring can be used in place of the wave washer 14.

A wire holding frame 19 is provided on the relative rotary disk 10. This wire holding frame 19 is connected to the relative rotary disk 1
0 has horizontal support radiuses 20 provided radially every 90 degrees when viewed from above, and an annular outer frame 21 is provided at the outer end of these support arms 20. The vertical bar 2 is arranged so that it can be repositioned along its length.
2 are provided, and these four vertical bars 22 and the outer frame 2
A bundle of annularly wound wire rods W is placed on the support arm 20 between the wire rod 1 and the wire rod 1.

In Figures 1, 2, 4 and 5,
Centering around the rotation axis 7 of the bottom plate 25 of the base 1
Bearing blocks 26 are provided at positions shifted by 180 degrees, and holes 27 are formed in these bearing blocks 26 with their axes pointing upward and downward, and hanging portions 28a of support arms 28 are fitted into these holes 27. , the support arm 28 is horizontally swingable about the bearing block 26, and is supported by a screw 29.
It can be fixed at a desired horizontal swing position.
A support body 30 is provided at the tip of the support arm 28, and a pivot 3 whose axis is horizontal is attached to this support body 30.
1 is rotatably provided, a swinging piece 32 is fixed to this pivot 31, and this swinging piece 32
The range of swing is regulated by upper and lower stopper bolts 34 screwed into screw holes 33 formed in the. A swing support rod 36 is fitted into a through hole 35 formed in the swing piece 32, and the swing support rod 36 is urged by a spring 37 in a direction away from the wire holding frame 19. A shaft 38 is rotatably fitted into one of the supports 30 so as to be coaxial with the pivot shaft 31.
8 is fixed to the pivot 31 and rotates in conjunction with the rotation of the pivot 31. This shaft 38
A sector gear 39 is fitted into the sector gear 3.
A gear 40 meshing with the rotation shaft 4 of a controller 41 such as a potentiometer provided on the support 30
It is attached to 2. This controller 41 is connected to the swing support rod 36 (hereinafter, the first
It is called a swing support rod 36. The other one is called a second swing support rod 36. ) swings in the direction approaching the wire holding frame 19 against the force of the spring 37, the rotation of the motor 4 is accelerated, and the first swing support rod 36 swings toward the wire holding frame 19 against the force of the spring 37.
When the swing piece 32 swings outward away from the wire holding frame 19 according to the force of 7, the rotation of the motor 4 is slowed down, and when the swing piece 32 hits the stopper bolt 34, the drive of the motor 4 is stopped. is being done.

As clearly shown in FIGS. 1 and 6, each of the first and second swing support rods 36 is divided into two parts, a base side support rod piece 36a and a distal side support rod piece 36a. The support rod piece 36b is connected to the support rod piece 36b by a connecting tool 46. This connector 46 has a cylindrical first member 47.
A through hole 49 is formed in the side circumferential wall 48, and the base side support rod piece 36a is fitted into this through hole 49. The first member 47 has a tapered bottom wall 50, a through hole 51 is formed in the bottom wall 50, and a threaded rod 52 is inserted into the through hole 51.
The head 53 of the threaded rod 52 is fitted into the first member 47, and the head 53 of the threaded rod 52 is fitted into the first member 47.
3 has a through hole 54 having the same diameter as the through hole 49,
The head 53 is formed to be perpendicular to the axis of the threaded rod 52, and is fitted into the first member 47 beyond the position where the through hole 54 overlaps the through hole 49. With such a configuration, after the head 53 is fitted into the first member 47, the base side support rod piece 36a is fitted into the through hole 49 and the through hole 54,
After that, by applying a force to the head 53 in the direction of entering the first member 47 side, the base side support rod piece 3 is
6a is held between the first member 47 and the head 53. The threaded rod 52 is fitted into a through hole 57 formed in the second member 56 of the connector 46, and the through hole 57 has a taper 57a into which the bottom wall 50 is fitted. The second member 56 is formed with a through hole 58 into which the distal end support rod piece 36b is fitted, and a slit 59 that is perpendicular to the through hole 57. The second member 56 has a recess 6 concentric with the through hole 57.
0 is formed, and a spring 61 is housed in this recess 60 so as to fit onto the threaded rod 52.
A handle 6 is attached to the tip of the threaded rod 52 that protrudes from the handle 6.
A nut 63 with 2 is screwed on. With such a configuration, by loosening the nut 63, the first member 47 can be attached to the base side support rod piece 36a.
can be moved in the axial direction of the first
The member 47 can be rotated around the proximal support rod piece 36a, and the second member 56 can be moved in the axial direction of the distal support rod piece 36b, and the distal support rod piece 36b can be rotated around the proximal support rod piece 36a. The threaded rod 52 can be rotated with respect to the two members 56.
The first member 47 and the second member 56 can be rotated relative to each other around the center. On the other hand, Natsu 63
By tightening, the first member 47 and the base side support rod piece 36a are fixed, the second member 56 and the distal side support rod piece 36b are fixed, and the first member 47 and the second member 56 are fixed. It can be done all at once.

Wire insertion rings 65 are provided directly or indirectly at both ends of the tip side support rod piece 36b.

(Effect of Example) Next, the operation of the embodiment device will be explained.

First, adjust the horizontal position of the support arm 28,
While determining the position of the base of the swinging support rod 36, adjusting the connecting tool 46, the base side support rod piece 36a of each of the first swinging support rod 36 and the second swinging support rod 36 is adjusted.
and the position of the tip side support rod piece 36b. Thereafter, the bundle of wire rods W is placed on the support arm 20 between the outer frame 21 and the vertical rod 22, and the tip of the wire rod W is passed through the wire insertion ring 65 above the first swing support rod 36. After that, after turning the outside of the vertical bar 22 once,
A known spring manufacturing machine (not shown) is passed through the wire insertion ring 65 on the upper side of the second swing support rod 36 (see FIG. 2).
It passes through the straightener and is compressed by a pair of upper and lower line feeding rollers. Thereafter, the tightening force of the nut 16, that is, the pressing force of the relative rotary disk 10 against the friction disk 11 is adjusted.

After making these preparations, the spring manufacturing machine is turned on and starts producing springs. At the same time, the motor 4 is controlled by the controller 41 in the manner described below. That is, when the swing support rod 36 swings in the direction approaching the wire holding frame 19 against the force of the spring 37, the rotation of the motor 4 is accelerated, and the swing support rod 3
6 swings away from the wire holding frame 19 according to the force of the spring 37, the rotation of the motor 4 is slowed down. Then, the swing piece 32 is connected to the stopper bolt 3.
4, the drive of the motor 4 is stopped. Then, the second swing support rod 36 and the first swing support rod 36
Due to the swinging, the unwound wire W between the spring manufacturing machine and the wire holding frame 19 can be kept in tension at all times. Even if the motor 4 repeatedly decelerates and stops, since the relative rotary disk 10 is not directly connected to the drive shaft 5, it will not be directly affected by the deceleration or stop of the motor 4.
The relative rotary disk 10, ie, the wire holding frame 19, rotates smoothly without being subjected to large speed changes.

(Effects of the invention) This invention achieves the following effects by virtue of the configuration described above.

The swing support rod is divided into two parts, and the divided base side support rod piece and tip side support rod piece are connected by a connector having a high degree of freedom in position,
Since the direction of the tip side support rod piece, in other words, the position of the wire rod insertion ring can be changed freely, the wire rod insertion ring can be positioned at the desired position depending on the position of the spring manufacturing machine and the wire stand. Thus, the unwound wire can be smoothly supplied to the spring manufacturing machine.

[Brief explanation of drawings]

The drawings show an embodiment of this invention,
Figure 1 is a front view, Figure 2 is a plan view, and Figure 3 is a front view.
Figure 4 is an enlarged sectional view of part A in the figure with the middle omitted.
An enlarged sectional view of part B in the figure, with the middle omitted.
FIG. 6 is an exploded perspective view of the connector. DESCRIPTION OF SYMBOLS 1... Base, 19... Wire holding frame, 36... Swinging support rod, 36a... Base side support rod piece, 36b...
... Tip side support rod piece, 46 ... Connector, 47 ... First member, 49 ... Through hole, 52 ... Threaded rod, 56
...Second member, 58...Through hole, 63...Nut, 65...Wire insertion ring.

Claims (1)

[Scope of utility model registration request] In a wire stand for a spring manufacturing machine in which a wire holding frame 19 is horizontally rotatably provided on the upper part of the base 1 and the wire holding frame 19 is driven by a motor 4, the lower part of the base 1 is A swing support rod 36 is attached to the pivot shaft 31 with its axis horizontal.
are vertically swingable so as to approach or move away from the wire holding frame 19. A wire rod insertion ring 65 is provided at the upper end of these swing support rods 36, and the swing support rods 36 are provided with base side support. The base side support rod piece 36a and the tip side support rod piece 36b are connected by a connecting tool 46, and this connecting tool 46 is connected to the first member 47. and a second member 56, and the first
The member 47 has a through hole 49 into which the base side support rod piece 36a is fitted, and the second member 56 has a through hole 58 into which the tip side support rod piece 36b is fitted. , the first member 47 and the second member 56
means a base-side support rod piece that is relatively rotatably connected via a threaded rod 52 orthogonal to a mutually parallel imaginary plane containing the axes of the through holes 49 and 58, and that is fitted into the through hole 49. 36a and the first member 47 can be fixed at a desired position, and the through hole 5
The distal end side support rod piece 36b and the second member 56, which are fitted through the threaded rod 5, can be fixed at a desired position, and the first member 47 and the second member 56 are connected to the screw rod 5.
A wire stand for a spring manufacturing machine that can be fixed at a desired rotational position around 2.