JPS6130242A - Coiling device - Google Patents

Abstract

PURPOSE:To absorb a thrust load and to prevent a damage by providing the guide mechanism of the wire rod rotating oppositely with intersecting at slightly inclining angle with the coiling shaft of the wire rod coiling device in a coiling device. CONSTITUTION:A preparatory winding coil is made for the part of a wire rod 18 and when it is fitted to a coiling shaft 15 for starting the wire rod 18 is coiled with the synchronous rotation of the coiling shaft 15 with a chuck part 46. The coil 25 thus formed is pushed into the chuck part 46 with the pressure of a wire rod guide cylinder 41 and is rotated simultaneously with the coiling shaft by being held plastically with a chuck claw 48. In this case the thrust load is placed on the wire rod guide cylinder 41 since it extrudes the coil 25 against the holding force of the chuck part 46. However, the bearing 43 of the wire rod guide cylinder 41 is of the structure that enables to absorb the load placed from the thrusting direction, so it is possible to bear sufficiently the thrust load.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coiling device for manufacturing a coil for a spring washer by coiling a long wire rod having a rectangular or rectangular cross section, for example.

[Conventional technology]

Examples of conventional coiling devices include those shown in Figs. 6 and 7.
There are things shown in the figure. Fig. 6 is a side view thereof, and Fig. 7 is an enlarged view of the main part of Fig. 6.

In the figure, the Cri wire winding device, as described later,
R is a device that winds up a wire rod 18 having a square or rectangular cross section on a coiling shaft 15 and sequentially sends out the obtained coils 25.
The coil 25 sent out by the t-t coil rotation drive device
As will be described later, a device that grips the coiling shaft with the chuck part 26 and rotates it in synchronization with the coiling shaft, Mf'i,
This is a drive device that synchronously rotates the coiling shaft 15 of the former C and the chuck portion 26 of the latter R, as described later.

A more detailed explanation of each of the above devices C, R, and M is as follows.

In the drive device M, it'ifi frame, 2I'i motor attached to this machine frame 1, 2ari its pulley, 3
, 4 and 5fd Similarly, the pulley attached to the rotating shaft 8 attached to the machine frame 1 via bearings 6 and 7 is the second reduction belt transmission part, and the coiling shaft of the above-mentioned pulley 4 and the wire wrapping device C, which will be described later. V3 is a third deceleration belt transmission section that connects the pulley 5 and a coil rotation drive device R to be described later.
The belt 10 is constructed by hanging the belt 10 around a pulley 29 that rotationally drives the chuck part 26. Both second and third reduction belt transmission parts V2. V3fd, the rotation of the motor 2 by the first deceleration belt transmission part v1 is efficiently decelerated at the same deceleration rate, and the coiling shaft 15 and chuck part 26 are configured to rotate synchronously.

In the wire winding device C, 11 is a first housing attached to the machine frame 1, 12ri is a rotating shaft attached to this first housing +1 via a bearing 13, and 14 is this rotating shaft 12.
This is a pulley fixed to the pulley 4, which together with the pulley 4 constitutes the second deceleration belt transmission section v2. 15 is a coiling shaft coaxially fixed to the rotating shaft 12; +6. Ilj is a guide roller that guides the side surface of the wire 18 that is spirally wound around the coil shaft 15. These rows 21
6 and 17ri, a second housing 19 fixed above and below the first housing 11 so as to sandwich the coiling shaft 15 above and below.
and the third housing 20, their rotation shafts 21 and 22
It can be mounted by attaching them via bearings 23 and 24, respectively.

Therefore, the wire rods 16 and 17 are rotatable in the direction of movement of the wire rod 18 (in FIG. 8, from the front side toward the drawing). Note that three guide rollers may be attached to this guide roller around the coiling shaft 15 at intervals of 120 degrees.

In addition, since the guide rollers 16 and 17 need to spirally wind the wire 18 around the coiling shaft 15,
The wire rods 18 are mounted so as to be shifted in the direction of the coiling axis 15 by an interval W depending on the width of the wire rods 18. 33 is a guide roller 16°1
This is a presser roller that presses the wire rod 18 guided by the wire rod 1 and wound spirally around the coiling shaft 15 from the outside. This roller 33F'i is attached to the fourth housing 24 fixed to the second housing 19 so as to rotate in the moving direction of the wire I8. 25 is the coiling shaft 15
This is a coil of wire 18 that is wound around and sent out.

In the coil rotation drive device R, 261- is a chuck portion that grips the coil 25 sent out from the wire wrapping device C. This chuck portion 26Fi is composed of a pair of rollers 31 and 32 attached to a circular support plate 30 fixed coaxially with a tube shaft 29 supported by bearings 27 and 28. Both rollers 31 and 32 are supported in the radial direction of the tube shaft 29 by shafts 31a and 32a that are elastically biased toward the axis of the tube shaft 29, so that they can elastically clamp the coil 25, and can also hold the coil 25 in place. It is adapted to rotate in the axial direction of the shaft 29. Further, both rollers 31 and 32 are arranged symmetrically about the axis of the tube shaft 29. 34 is a pulley fixed to the tube shaft 29. The tube shaft 29, and therefore the chuck portion 26 integral therewith, is configured to rotate synchronously with the coiling shaft 15 by the third reduction belt transmission portion v3. tube shaft 29
The hole 29ai in the middle is a guide hole through which the coil 25 is sent out while being guided by the guide rollers 16, 17 and is gripped by the chuck part 26 out of the device.

With this configuration, the wire rod 18
Make a pre-wound coil on a part of the coiling shaft 1 and attach it to the coiling shaft 1.
5 and then start the motor 2, the coiling shaft 15 rotates synchronously with the chuck part 26 and the wire 18
However, it is wrapped up in this. At this time, the wire 18r
i. Its lateral sides are guided by guide rollers 16 and 17, and its outer side is pressed by pressing rollers 23 as it is rolled up. The coil 250 and guide row 216.11 wound in this way are
It is pushed into the chuck part 26, where it is elastically gripped and rotated in synchronization with the coiling shaft 15. As a result, the coil 25 wound around the coiling shaft 15 is
The coiling shaft 18 can be rotated while maintaining a constant state of close contact with the coiling shaft I5, and the winding of the wire rod 18 can always be performed reliably.

[Problem that the invention seeks to solve]

However, in such a conventional coiling device, in order to bring the coiled wire 18 into close contact with the coiling shaft 15, the coiling shaft 15 and the chuck part 26 are
At the same time, the coil 2 is pushed out by the guide rows 216 and 17 by the gripping force of the chuck part 26.
Since the structure is such that a brake is applied to the guide rows 216.11, a thrust load in the direction of the coiling shaft 15 is applied to the guide rows 216.11.
．． (7) Bearing 2
3.24 could be damaged.

In addition, in conventional coiling devices, in order to spirally wind the wire in one day, the guide rollers 16, 11 are shifted by the interval W and are attached to the first housing 11, which is a complicated structure. There is a problem in that positioning requires time and skill. This is especially true when three guide rollers are provided.

Furthermore, since the bearings 23 and 24 of the guide rollers l6- and I7f-j are located close to the winding part of the wire rod 18 and are arranged around the coiling shaft without being sealed, the rollers 16.17ri Of course, there was also a management problem in that the bearings 23 and 24 were dirty with dust and the like, requiring constant repair.

Such a problem also occurs when a scroll chuck or a drill chuck is used for the chuck portion 26. This is because these chucks also have the same function as the chuck section 26 described above. Although not shown, there is also a coiling shaft 15 with a taper (with a larger diameter on the coil rotation drive device side), but this also has the above-mentioned problems. . In other words, when the wire 18 is wound around the tapered coiling shaft, contact resistance occurs between the coiling shaft and the tapered coiling shaft.
There is no need to roughly rotate the extruded coil to increase the adhesion between the coil and the coiling shaft, and the coil can be rolled up simply by driving the coiling shaft. However, when the length of the coil exceeds a certain length, the contact resistance of the taper part decreases relatively due to the load, so the chuck 826, I:, or the scroll chuck, or the drill chuck described above is used to drive the coil auxiliarily. It will have to be rotated. However, if this auxiliary driving rotation was performed, the brake would not be applied to the coil that would tend to slip in the axial direction, resulting in the problem of damage to the bearing as described above.

The present invention aims to solve these conventional problems, and provides a coiling device in which the structure of the wire guide mechanism is simple, there is no risk of damage, and repair management is easy.

[Means for solving problems]

That is, the coiling device of the present invention rotates relatively between a coiling shaft rotated by a drive device and an inclined axis that is fitted onto the coiling shaft and intersects the axis at a slight angle of inclination. A wire guide tube whose side end face perpendicular to the axis serves as a guide surface for the wire to be wound around the coiling shaft, and a presser foot that presses the wire spirally wound around the coiling shaft from the outside along the guide surface of the wire rod guide surface. a wire rod winding device equipped with a roller; and a coil rotation drive device equipped with a chuck section that grips a coil of wire wound around the coiling shaft and sent out, and rotates it in synchronization with the coiling shaft by the drive device. , the coiling shaft and the chuck part are configured in the same way as the drive device described above for synchronous rotation.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6. Figure 1 shows a wire winding device, which corresponds to that shown in Figure 7, Figure 2 shows an enlarged view of the main parts of Figure 2, and Figure 3 shows a coil rotation drive device, which corresponds to that shown in Figure 7. FIGS. 4 and 5d are explanatory diagrams of the main parts of FIG. 3. The drive device in this invention is the same as the conventional one, so the explanation will be omitted.

In the figure, the same or equivalent parts are indicated by the same reference numerals as in FIGS. 7 and 8. C1 is a wire winding device, and R is a coil rotation drive device.

In the wire winding device C1, 411- is a wire guide tube, which is fitted onto the coiling shaft 15 and is rotatably attached to the housing 42 integrated with the first housing 19 via a thrust load bearing 43. . This guide cylinder 41H is attached so as to rotate relative to the coiling shaft 15 at an inclined axis S2 that intersects the axis S1 of the coiling shaft 15 at a slight inclination angle θ, in this embodiment, at an inclination angle θ of 5 degrees. It is. In addition, the wire guide tube 41
The side end face f perpendicular to the inclined axis S2, which is the axis of , that is, it is inclined by 5 degrees with respect to the axis S1 of the coiling shaft 15. The pressing roller 33ilt of the wire 18 is attached to a shaft 45 protruding from the side plate portion 44 of the housing 42 via a bearing 46.

In the coil rotation drive device R, 46f′i tube shaft 29
This is a scroll chuck attached to the tube shaft 29, and is composed of an annular plate 41 and three chuck claws 48 attached to the annular plate 41 radially around the axis of the tube shaft 29. The chuck claw 48 includes a claw guide 488 and a claw guide 48.
8 through the guide pin 48b and toward the axis of the tube shaft 29 using a disc spring 48C, the claw 4 can be retracted and retracted.
8d. The tip of the claw 486 is made of carbide.

The effect will be explained below.

A pre-wound coil is made in advance on a part of the wire 18, and when the coil is fitted onto the coiling shaft 15 and the motor 2 is started, the coiling shaft 15 is moved to the chuck portion 46 as in the conventional case.
The wire rod 18 is wound around the wire rod 18 by rotating synchronously with the wire rod 18. At this time, the wire rod 18i1t is wound with its lateral side surface being guided by the guide surface f of the wire rod guide tube 41 and its outer surface being pressed by the press roller 33.

The coil 25 wound and formed in this way is pressed by the wire guide tube 41 and pushed into the chuck part 46, where it is elastically gripped from three sides by the three chuck claws 48 and synchronized with the coiling shaft 15. The drive rotation explodes.

As a result, the close contact between the coil 25 and the coiling shaft 15 is maintained, and a constant frictional resistance is always generated between the coil 25 and the coiling shaft 15, so that the winding of the wire 18 is always performed reliably. The wire rod guide tube 41 tries to push out the coil 25 against the gripping force of the chuck part 46 that tries to drive and rotate the fill 25, so it applies a large load, that is, a thrust load, in the direction of the coiling axis 15. I will receive it. However, the bearing 43 of the wire guide tube 41
Haha, it will receive a load in the thrust direction, and since the bearing 43 has a structure that can absorb the load from the thrust direction rather than the load from the radial direction, it can sufficiently withstand the thrust load. be able to. Therefore, although the conventional bearings 23 and 24 of the guide rollers 16 and 17 were sometimes damaged due to receiving loads in the radial direction, this problem can be solved by the wire guide tube 41.

Further, since the inclination angle θ of the guide surface fl-t of the wire guide tube 41 and its rotation axis S2 with respect to the rotation axis S1 of the coiling shaft 15 is determined accurately, the structure becomes simple. Therefore, in order to spirally guide the wire 18, as in the conventional case, the guide roller 16.1 is
7 becomes unnecessary.

Furthermore, the bearing 43 of the wire rod guide tube 41 is located at a position away from the coiled portion of the wire rod 18, and the guide surface f of the wire rod 18 is a simple plane, and there is almost no clearance between it and the coiling shaft 15. Since the assembly is structured without any cracks, there is no possibility that the bearing 43 or the guide surface f portion will become contaminated with dust and cause functional deterioration, making it easier to repair and manage the device.

〔Effect of the invention〕

As explained above, according to the present invention, a wire guide cylinder is fitted onto the coiling shaft and rotates relatively at an inclined axis that intersects the rotation axis at a slight angle of inclination, and the wire is guided by the guide surface of the wire guide tube. Since the wire guide mechanism is provided, it is possible to obtain a coiling device that has a simple structure, is free from damage, and is easy to repair. .

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a sectional view of a wire winding device that is a component thereof, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 4 is an enlarged view taken from the direction of arrow A in FIG. 3, FIG. 5 is a sectional view taken along the line ■-■ in FIG. 4, and FIG. 6 is a conventional coiling The side view of the device, FIG. 7, is an enlarged view of its main parts. C! ......Wire winding device R1......Coil rotation drive device M...
...... Drive device 15 ...... Coiling axis S + ...... Rotation axis θ of coiling shaft 15
.........Inclination angle S2......Inclination axis (rotation axis of wire guide tube 41) f......Guide surface 18 ......Wire 25...Coil 33...Press roller 41...Wire guide tube 46... ...Chuck part Fig. 1 Fig. 2 Fig. 3 Fig. 4■ Fig. 5 Fig. 6

Claims (1)

[Claims] A coiling shaft that is rotated by a drive device and a coiling shaft that is fitted into this coiling shaft and rotates relative to it at an inclined axis that intersects the axis at a slight angle of inclination, and a coil that is perpendicular to the inclined axis. A wire rod guide tube whose side end surface serves as a guide surface for the wire to be wound around the coiling shaft, and a presser roller that presses the wire rod spirally wound around the coiling shaft from the outside along the guide surface of the wire rod guide tube. A coil rotation drive device comprising a wire winding device, a chuck portion that grips a coil of wire wound around the coiling shaft and sent out, and causes the drive device to rotate the coil in synchronization with the coiling shaft; A coiling device comprising the above-mentioned drive device that rotates the chuck portion in synchronization with the chuck portion.