JPS6140055Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an anchor ring forming apparatus for forming and attaching an anchor ring to a filament coil of a tube-shaped light bulb for use in a copying machine, for example.

Generally, a long filament coil is used in a tube-shaped light bulb for a copying machine, and anchor rings are wound around the filament coil at predetermined intervals. This anchor ring is an anchor wire for forming an anchor ring.A large-diameter coil-shaped support ring part is formed, and a small-diameter coil-shaped winding part is connected to one end of this support ring part, which is wound around a filament coil. In this device, the support ring portion is brought into contact with the inner surface of the tubular valve, and the filament coil is properly arranged and held on the tube axis of the tubular valve.

However, conventional molding equipment for molding and attaching such anchor rings to filament coils inserts a rotatably structured filament coil and also inserts a winding core that can rotate around the axis of the filament coil. By fixing the end of the anchor wire to the outer peripheral surface of the winding core and rotating the winding core, the anchor wire can be first wound around the outer peripheral surface and the support ring portion can be formed. It's summery. When this support ring part is molded to the end of the core, the anchor wire is bent in the radial direction of the core, that is, toward the filament coil, by the guide part formed on the end surface. Thereafter, by rotating the filament coil, the anchor wire is wound around the filament coil, thereby forming the wound portion. In addition, after forming this wrapped part,
The anchor wire is adapted to be cut from the wrap. However, in a molding device having such a configuration, when molding the support ring portion, the anchor wire wound around the core gradually approaches the end of the core. There are cases where the core falls off the outer circumferential surface of the core without being bent by the guide portion, and there is a problem in that the shape of the rising portion connecting the support ring portion and the winding portion cannot be formed into a predetermined shape. In addition, in the past, the anchor wire was cut after the winding part was formed, so when cutting the anchor wire, the cutter could not be brought sufficiently close to the filament coil, and the cut part was cut by the winding part. There was a defect that remained protruding from the part. Therefore, these things not only make the appearance of the anchor ring unsightly, but also adversely affect the light distribution characteristics of the filament coil. Furthermore, it is being considered to improve productivity by forming and attaching the anchor ring on a filament coil coiling device, but in the conventional coiling method using a coiling device, it is difficult to rotate the filament coil itself. It was something that I couldn't do. Therefore, it is not possible to combine this coiling device with a forming device that rotates the filament coil itself as described above, and it is therefore necessary to develop a new type of anchor ring forming device that can be combined with the coiling device. It was wanted.

This invention was developed based on these circumstances, and its purpose is to form an anchor ring using anchor wire that has been cut to a predetermined length, thereby eliminating the need to rotate the filament coil. Moreover, the rising part connecting the support ring part and the wrapped part is reliably formed into a predetermined shape, and the cut end of the anchor wire does not protrude from the wrapped part, thereby reducing the effect on the light distribution characteristics of the anchor ring. An object of the present invention is to provide an anchoring forming device that can reduce the amount of damage caused by anchoring.

An embodiment of this invention will be described below based on the drawings.

In the figure, 1 is a chuck, and this chuck 1 is configured to be able to hold together a filament coil 2 and an anchor wire 3 for forming an anchor ring having a predetermined length. Note that the filament coil 2 is supplied from a coiling device (not shown) in the previous process and is wound around a core wire 2a, and the anchor wire 3 is supplied along the supply line 3a. It is becoming more and more like this.

A winding core 4 is disposed in front of the chuck 1. This winding core 4 has a core portion 5 and a core portion 5.
It consists of a flange part 6 integrally formed at the rear end, and a V-shaped groove 7 is formed in the lower part thereof along the axial direction. This V-shaped groove 7 is for inserting and guiding the filament coil 2, and is designed so that the winding core 4 can be arranged concentrically with the filament coil 2. Further, a stepped portion 8 is provided at the end of the core portion 5.
is formed, and a guide portion 9 protruding from this stepped portion 8 is formed. Note that the stepped portion 8 is
A support ring portion is formed by winding the other end of the anchor wire 3 around this outer peripheral surface, and the diameter of this stepped portion 8 is determined in advance in anticipation of the support ring portion becoming larger in diameter due to spring back. The support ring portion is formed to a size that allows it to be molded to a smaller diameter than when in use. Note that 10 is a fixing member to which the winding core 4 is fixed;
1 is an insertion hole for a bolt (not shown) that fixes the winding core 4 to the fixing member 10. and,
A forming tool 12 configured to accommodate the core portion 5 of the winding core 4 is disposed around the outer circumference of the winding core 4 .
(In FIG. 1, the winding core 4 and forming tool 12 are shown disassembled.) The forming tool 12 has a gear portion 13 and a groove portion 14 formed on its outer periphery, and its circumferential direction is It is partially cut out. The gear portion 13 meshes with a main gear 16 via idle gears 15, 15, and as the main gear 16 rotates, the forming tool 12 is
It is possible to rotate around the winding core 4 in the direction shown in FIG. The main gear 16 is rotated by a rotational drive from a motor (not shown) being transmitted via a running belt 17 and a pulley 18. A plate 19 movable along the axis of the filament coil 2 is fitted into the groove 14, and as the plate 19 moves, the forming tool 12 is rotated in a predetermined relationship. It is movable in the b direction and the c direction in the figure. In addition, the above idle gear 1
Numerals 5 and 15 are designed to be able to move together with the forming tool 12 while meshing with the main gear 16.

A hook portion 20 is provided at the end of the forming tool 12.
is formed, and this hook portion 20 is connected to the forming tool 12.
By rotating and moving the chuck 1, the anchor wire 3 held in the chuck 1 can be hooked and rotated.

Next, the operation of an embodiment having the above configuration will be explained.

First, the filament coil 2 inserted and guided through the V-shaped groove 7 of the winding core 4 and the end of the anchor wire 3 supplied along the supply line 3a are both held in the chuck 1. After this, as shown in FIG. 3, the forming tool 12 is
As shown in FIG. 4, the anchor wire 3 is hooked onto the hook portion 20 by rotating the forming tool 12 in the direction a as shown in FIG. At this time, the anchor wire 3 is cut in advance to a predetermined length, that is, a length necessary for forming the anchor ring. And the above-mentioned hook part 2
While continuing to rotate the forming tool 12 in the direction a with the anchor wire 3 hooked to the anchor wire 3, the plate 19 moves it in the direction c in a predetermined relationship with the rotation. Then, as shown in FIG. 5, the anchor wire 3 is rotated around the filament coil 2 by the hook 20 and wound around the outer peripheral surface of the filament coil 2. In this way, the anchor wire 3 is wound around the filament coil 2, and as the winding reaches the end of the winding core 4 as shown in FIG. be done. And this winding part 21
After the forming, the end surface of the winding core 4 is projected from the end of the forming tool 12 by the subsequent rotation and movement of the forming tool 12 in the c direction, as shown in FIG. The anchor wire 3 is raised along the guide portion 9 of the core 4 and wound around the outer peripheral surface of the stepped portion 8 to form the support ring portion 22 of the anchor ring. In this way, the anchor ring 23 formed by connecting the winding part 21 and the support ring part 22 is attached to the filament coil 2.
Once the anchor ring 33 is wound around the filament coil 2 at a predetermined interval, the chuck 1 is opened, the filament coil 2 is let out in the b direction, and the above steps are repeated. .

According to such an embodiment, the wrapping portion 21
When molding the support ring part 22 after molding, the anchor wire 3 comes into contact with the end surface of the winding core 4 protruding from the end of the forming tool 12, that is, the guide part 9, and then stands up along the guide part 9. Since the anchor wire 3 can be raised, the anchor wire 3 can be reliably wound around the outer peripheral surface of the stepped portion 8. Therefore, the support ring part 22 can be reliably formed into a predetermined shape by being connected to the wrapping part 21. Further, since the end of the anchor wire 3 is clamped by the chuck 1, the anchor wire 3 is held at the winding portion 21.
This can prevent it from remaining protruding from the surface. Therefore, from these points, the above anchor ring 23
This makes it possible to improve the appearance of the filament coil 2 and to reduce the adverse effects on the light distribution characteristics of the filament coil 2.

Further, since the anchor wire 3 is cut to a predetermined length in advance, the anchor ring 23 can be formed and attached by rotating the forming tool 12 without rotating the filament coil 2 itself. Can be done. Therefore, if a forming apparatus having such a structure is used, it is possible to easily combine the forming apparatus having the above structure onto the coiling apparatus for the filament coil 2, so that the anchoring can be performed continuously with the coiling of the filament coil 2. 23 can be formed and attached, and the productivity can be increased.

Furthermore, since the outer periphery of the forming tool 12 is partially cut out and the winding core 4 is also formed with a V-shaped groove 7 at its lower part, the forming device itself can be moved up and down relative to the filament coil 2. If configured to be movable, it is also possible to wrap a new anchor ring 23 between anchor rings 23, 23 that have been wound in advance.

As explained above, this invention includes: a chuck that clamps a filament coil and an anchor wire having a predetermined length; a winding core through which the filament coil is inserted and which forms the support ring portion of the anchor ring; and a forming tool that accommodates the winding core and is arranged to be rotatable around the winding core and movable in the axial direction of the winding core, and the anchor wire is pulled by a hook provided on the forming tool. By hanging the anchor wire and rotating it, the anchor wire is first wound around the outer circumferential surface of the filament coil to form a wrapped portion of the anchor ring, and after the wrapped portion is formed, the forming tool is moved to form the anchor wire. A guiding portion provided on the end surface of the winding core protruding from the end of the forming tool causes the anchor wire, which is subsequently rotated by the hooking portion, to stand up in the radial direction of the winding core, and It is characterized in that the support ring portion of the anchor ring is formed by wrapping it around the outer peripheral surface of a stepped portion formed at the end portion. Therefore, when forming the support ring part after forming the winding part, the anchor wire is brought into contact with the end surface of the winding core and is surely raised along the guide part, and then the winding part is formed. Since it is wound around the outer peripheral surface of the stepped portion formed at the end of the core, the rising portion connecting the support ring portion and the winding portion can be reliably formed into a predetermined shape. Further, since the end of the anchor wire is clamped by the chuck, the anchor wire does not remain protruding from the winding portion. Therefore, from these things, it is possible to improve the appearance of the anchor ring, and to reduce the adverse effects on its light distribution characteristics. Further, since the anchor ring is cut to a predetermined length in advance, the anchor ring can be wound around the filament coil without rotating the filament coil itself as in the conventional method. Therefore, it can be easily combined with the above-mentioned filament coil coiling device to increase its productivity, which has great effects.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, with Fig. 1 being a perspective view showing a part of the device exploded, Fig. 2 being a sectional view showing the positional relationship between the winding core and the forming tool, and Figs. FIG. 7 is a process diagram showing the process of forming and attaching the anchor ring, and FIG. 8 is a side view of the anchor ring wound around the filament coil. 1...chuck, 4...core, 8...step, 9
...Guiding part, 12...Forming tool, 20...Hooking part.

Claims (1)

[Scope of utility model registration request] In an anchor ring forming device that wraps an anchor ring that holds the filament coil around a filament coil, the filament coil and the end of an anchor wire for anchor ring forming that has been cut to a predetermined length are held together. a chuck, a winding core which is arranged so that the filament coil is inserted concentrically and the anchor wire is wound around its outer peripheral surface to form a support ring portion of the anchor ring, and a winding core that accommodates the winding core. A forming tool arranged to be rotatable around a core and movable in the axial direction thereof, and an anchor provided on this forming tool and having one end clamped together with the filament coil by the chuck as the forming tool rotates and moves. By hooking and rotating the wire, first, the anchor wire is wound around the outer circumferential surface of the filament coil to form a wound portion of the anchor ring, and a hook portion provided on the end face of the winding core forms the winding portion. a guide portion that protrudes from the end of the forming tool as the forming tool moves after forming the attachment portion and causes the anchor wire, which is subsequently rotated by the hook portion, to rise in the radial direction of the winding core; , a stepped portion formed at the end of the winding core and wrapping the other end of the anchor wire, which is subsequently rotated, around the outer peripheral surface to form the support ring portion. Ring forming equipment.