JP2721533B2 - Wire tension device for winding machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a wire tension device for a winding machine, and more particularly, to a tension suitable for a winding having a large change in wire length, such as a horizontal deflection coil in a cathode ray tube. Device.

2. Description of the Related Art In a wire tension device for a winding machine, a mechanism for keeping a wire taut generally includes a roller arranged one by one, a roller on one side floatingly supported, and a roller connected to a spring. A wire is wound around these rollers in sequence, and when the wire length increases in the winding, a spring moves the roller, or when the wire length decreases, the wire By moving the roller against the spring, fluctuations in the wire length are absorbed.

[Problem to be Solved by the Invention] Such a wire tension device is also employed in a winding machine of a horizontal deflection coil in a cathode ray tube. However, in the winding of the horizontal deflection coil, the length of the wire changes rapidly during the winding, while when the amount of deflection of the spring increases, the force required to expand or compress the spring increases, so that the roller is In accordance with the change in the wire length, it is not possible to follow and move, and the wound coil is likely to have uneven winding.

The present invention, even in a winding having a large change in wire length,
An object of the present invention is to provide a wire tensioning device for a winding machine, which can always surely tension a wire.

[Means for Solving the Problems] A wire tension device for a winding machine according to the present invention includes a hollow main body member having one end closed and an opening connected to an external space at the other end; An inserted slide member, a wire guide attached to the slide member, and a wire provided at the closed end of the main body member for winding the wire around the wire guide through the closed end of the main body member and returning the wire to the same end. A wire tensioning mechanism including a member having a through hole, and a pipe member connected to the main body member for supplying compressed air to a space formed between the closed end of the main body member and the slide member. It is characterized by having.

In the wire tension device for a winding machine of the present invention, the end opening of the body member can be formed by opening the entire end of the body member or by providing an opening of an appropriate size at the end. Alternatively, the wire guide may be constituted by a member fixed to the slide member or a member rotatable on the slide member.

[Operation] The wire tension device for winding of the present invention is arranged, for example, between a wire supply device and a winding unit in a winding machine. The wire from the wire supply device passes through one of the through holes in the tension device of the present invention, is wound around a guide on the slide member, and is then drawn out of the main body member from the other of the through holes and wound. Guided to a wire guide or nozzle in the unit. During the winding, when the pressurized air is supplied to the main body member via the pipe member, the slide member moves together with the guide by the pressurized air, and the wire can be kept taut. At this time, the pressurized air leaked from the gap between the slide member and the main body member is released to the external space through the opening in the main body member, and the slide member can move instantaneously, so that the wire length changes rapidly. Even so, the wire can be tensioned following this.

[Embodiment] The drawings show an embodiment of a wire tension device for a winding machine of the present invention.

As shown in FIGS. 1 and 2, the tension device includes a hollow main body member 10 and a slide member 11 inserted into the internal space of the main body member.

The main body member 10 includes two side walls 12 and 13, upper and lower side walls 14 and 15, and an end wall 16. The side walls 12, 13 are arranged parallel to each other at intervals, the upper wall 14 is arranged at the upper part of the side wall, and the lower wall 15 is arranged at the lower part of the side wall and connected to each of the side walls. ing. The end wall 16 is arranged to cover the opening at one end of the hollow cylinder formed by the walls 12-15,
A fastener disposed between the side wall and the side wall allows the end of the main body member to be crimped and released from the main body member.

The fastener itself has a J-shaped member 17 fixed to the side edge of the end wall and an operating member 18, and rotates a lever constituting the operating member 18 to connect a link pin-connected to the lever. Loosen, release link from J-shaped member 17, end wall
16 is free from the main body member so that the end surface of the main body member can be opened, and the lever is rotated in the opposite direction to engage the tip of the link with the J-shaped member, and the end face wall 16 is By crimping to the main body member, the end of the main body can be closed.

The slide member 11 is inserted into the internal space 19 of the main body member 10 and can slide inside the main body member. The movement of the slide member is performed by pressurized air. The pipe joint 21 is provided for this purpose, and the slide member 11 on the upper wall 15 constituting the main body member is provided.
And screwed into a screw hole in a portion corresponding to the space between the end face wall 16 and connected to a pipe joint of a pressure reducing valve 22 fixed to a lower portion of the main body member. Connected to a pressure air source such as an air compressor.

A buffer is provided between the slide member 11 and the end wall 16 of the main body member. The shock absorber comprises a coil spring 23 and a receiving member 24. The coil spring 23 is arranged along the longitudinal direction of the main body member, and has one end fixed to the end wall 16. The receiving member 24 is engaged and fixed to the free end of the coil spring. When the slide member 11 is moved to the left in the drawing, the slide member 11 hits the receiving member 24, and the coil spring 23 bends to smoothly decelerate the slide member. It is consumed by the compression of the spring, and the cutting of the wire can be prevented.

Further, the slide member 11 is provided with a member for changing the direction of the wire. This member is, for example, a guide car
25, which is housed in a recess on the upper surface of the slide member, and is mounted on a shaft fixed to the slide member 11 via a bearing. The guide wheel itself has a groove on its peripheral surface for winding a wire. The two members 26 and 27 inserted into the end wall 16 of the main body member guide the wire to the guide wheel 25, and include a holding cylinder and a hollow guide. Of these, the guide is made of jewelry such as ruby, and is fitted and fixed to the holding tube. Installation is
This is achieved by fitting and fixing the members 26 and 27 to the end wall 16 so that the hollow hole of the guide is located tangentially to the groove in the guide wheel 25. Further, another guide wheel 28 is attached to one end of the main body member where the end wall 16 is located. This guide wheel also has a groove on the peripheral surface, is arranged so that the groove bottom is located on a tangent to that of the guide wheel 25, and is fixed to a support plate 29 extending from the main body member. Is mounted on the shaft with the bearing interposed.

In this tensioning device, the wire is designated by the reference numeral 30.
As shown, after being wrapped around guide wheel 28, it is pierced through member 26, and then wrapped around guide wheel 25 and attached to this tensioning device by piercing member 27. One end 31 of the wire is guided to a wire supply device, and the opposite end 32 is guided to a guide nozzle in a winding machine, that is, a hollow member that guides the wire during winding.

At the time of winding, when pressurized air is jetted through the pressure reducing valve 22 and the pipe joint 21 into the space between the slide member 11 and the end face wall 16 of the main body member, the slide member 11 is moved to FIG. 1 and FIG. The wire 30 can be slid to the right to tension the wire 30. Even if the winding is started and the wire is loosened, the wire can be kept taut because the slide member 11 is constantly moved rightward by the compressed air. At this time, since the body member 10 is open at the end opposite to the end where the end face wall 16 is located, the slide member can be slid instantly according to the change in the wire length. When the wire 30 is pulled, the slide member 11 slides to the left, and the wire can be kept taut. At this time, the pressurized air in the space between the main body member 10 and the slide member 11 similarly escapes to the external space, and the slide member can be slid instantly according to the change in the wire length. In this tension device, the force applied to the wire is controlled by a pressure reducing valve.
By adjusting 22, it can be adjusted to any size.

The tension device according to the present invention includes a brake mechanism 50 for applying tension to the wire, in addition to such a wire tensioning mechanism. This brake mechanism has five sets of brake means built into the side surface of the main body member 10.

As shown in FIG. 3, the brake mechanism is a fixed side member fixed to the side surface of the main body member 10 in the tensioning mechanism.
51 and a movable side member 52 attached to the fixed side member. Although not shown, the movable member 52 has two shafts attached to the lower surface thereof inserted into holes in the fixed member 51 so as to be able to move up and down on the fixed member. Further, the movable side member 52 is provided with screw holes parallel to these axes, the fixed side member is also provided with screw holes coaxially, and a screw member 53 having a knob is screwed into these screw holes from the movable member side. The movable member can be stopped at an arbitrary position by adjusting the amount of screwing.

A guide pin 55 is provided on a surface of the fixed member 51 facing the movable member 52. These guide pins have an inverted L-shape. The guide pins are arranged so that the portions wound at right angles are horizontal, and the vertical portions are fitted and fixed to the fixed side member 51. At the same time, the movable side member 52 is provided with a hole 56 corresponding to the guide pin 55 disposed at the center, and when the movable side member 52 is lowered, the guide pin 55 fits into the hole 56, The movable member 52 can be lowered until it comes into contact with the fixed member 51. A holding member 57 is further attached to the fixed side member 51 at the right end. As shown in FIG. 2, guide wheels 58, 59, a cleaning device 61,
The snell guide 62 is attached to it. Guide car 5
8 and 59 have a groove on the peripheral surface, and the holding member 57
The cleaning device 61 is formed by pressing two discs made of felt or the like, is fixed to the holding member, and the snell guide is formed from a known shape. It is planted on the lower surface of the holding member.

Each of the braking means has the same configuration, and includes a pair of contact members 62 and 63, respectively. These contact members are made of jewelry such as sapphire, and are respectively fixed to the lower surface of the movable member 52 and the upper surface of the piston member 64 on the fixed member. The piston member 64 is slidably inserted into a hole 65 provided in the fixed-side member 51. Of these piston holes,
In FIG. 3, the fourth piston hole 65 from the right is
Although they are connected to each other by a passage 66 provided in the fixed side member 51, the remaining leftmost piston hole 65 is independent. The former four piston holes are connected to a pressurized air source via two pipe joints 71 and 72, respectively, and the other independent piston holes are connected via pipe joints 67 and 68 at both ends of the passage 66. ing.

When the compressed air is supplied via the pipe joint 67, the compressed air enters the four piston holes 65 through the passage 66 and raises each of the piston members 64, and the contact members on the upper surfaces of these piston members By pressing the 62 against the contact member 63 on the lower surface of the movable side member 52 and exhausting the gas through the pipe joint 68, the contact members 62 and 63 can be separated from each other. When the compressed air is supplied to the pipe joint 71,
The compressed air enters the piston hole 65 on the left end, and only the piston member 64 on the left side is lifted to press the contact member 62 on the left end against the contact member 63.
When the air is exhausted from the piston hole 65 via 72, the piston member 64 at the left end is lowered, and the contact member 62 can be separated from the contact member 63.

The brake mechanism is disposed between the above-described wire tensioning mechanism and the wire supply device. When the wire is mounted, the screw member 53 having the knob is rotated to lock the movable member 52, the movable member 52 is raised, and the wire 30 is moved between the snell guide 62 and the disc in the cleaner 61. Then, it is wound around guide wheels 59 and 58, passed under guide pin 55, and then wound around guide wheel 28 and guide wheel 25 in the aforementioned wire tensioning mechanism.

When starting the winding, only the leftmost brake means is activated and the remaining four brake means are released, giving the wire 30 the strong tension required to start winding. When the winding starts, the brake means disposed on the leftmost side is released, and the remaining four brake means are operated to apply the necessary tension to the wire 30 to the wire.

At this time, the brake mechanism is constituted by a plurality of brake means, and the movable part of each brake means is constituted only by the piston member 64 having the contact member 62, so that the weight of the movable part is extremely small. That is, since the inertia is made small, the magnitude of the wire tension can be kept constant and the wire cutting accident can be eliminated. Conventional brake mechanisms, on the other hand, wind a wire around a roller disposed between a wire tensioning mechanism and a wire feeder, and control the rotation of this roller by a brake device such as an electromagnetic particle type brake. However, in the case of windings with rapidly changing tension, such as the horizontal deflection coil of a cathode ray tube, a delay occurs due to the inertia of the rotating parts such as rollers, and a strong impact is applied to the wire. Easy to cut wire.

In the embodiment described above, the brake mechanism
As described above, such as a horizontal deflection coil of a cathode ray tube, which can cope with a winding having a rapid change in wire length, a different configuration may be used depending on the type of coil to be wound. it can.

[Effects of the Invention] As described above, the wire tension device for a winding machine of the present invention can reliably follow the fluctuation of the wire length. Even if the wire length changes rapidly like a coil, a well-aligned coil can be wound.

[Brief description of the drawings]

The drawings show an embodiment of the wire tensioning device for a winding machine of the present invention. FIG. 1 is a partially broken plan view, FIG. 2 is a partially broken side view, and FIG. Fig. 1A-A
It is an expanded sectional view of a brake mechanism along a line. 10 ... body member, 11 ... slide member, 29 ... guide wheel, 26, 27
... members having through holes, 21 ... pipe members.

Claims (3)

(57) [Claims] 1. A hollow main body member having one end closed and an opening connected to an external space at the other end, a slide member inserted into the internal space of the main body member, a wire guide attached to the slide member, After winding the wire around the wire guide through the closed end of the main body member, in order to return to the same end, a member having a through hole provided in the closed end of the main body member, a closed end and a slide member of the main body member A wire tensioning mechanism including a pipe joint connected to the main body member for supplying pressurized air to a space formed between the wire tensioning device and the winding machine. 2. The tension device according to claim 1, wherein the wire guide comprises a member rotatable on a slide member. 3. A hollow main body member having one end closed and an opening connected to the outside air at the other end, a slide member inserted into the internal space of the main body member, and a wire guide attached to the slide member. A member having a through-hole provided at the closed end of the main body member to return the wire to the same end after winding the wire around the wire guide through the closed end of the main body member, and a closed end and a slide member of the main body member. A wire tensioning mechanism including a pipe joint connected to the body member for supplying compressed air to a space formed between the wire tensioning mechanism and a brake disposed between the wire tensioning mechanism and the wire supply device. A winding mechanism, comprising: a driving mechanism for passing a wire between the pair of contact members and pressing one of the pair of contact members toward the other. Hate of the tension device.