JPH03227509A - Twisting of leader line in automatic coil winding machine - Google Patents

Abstract

PURPOSE:To perform full automation from winding to twisting process of a leader line by repeating processing where a wire rod to be let out from a nozzle is piled on the part of first twisting for performing second twisting. CONSTITUTION:When a hook 20 for twisting is rotated, the first twisting is performed on a wire rod 28 hung about on the hook 20 for twisting between the hook 20 for twisting and a nozzle 26. Next, by moving the nozzle 26 while rotating the hook 20 for twisting, the wire rod 28 being anew let out from the nozzle 26 is piled to be subjected to the second twisting. The nozzle 26 is moved up to a position superseeding the hook 20 for twisting while making it to perform an escape action so as not to closely contact with the hook 20 for twisting and stopped followed by rotation of the hook 20 for twisting about 2 to 3 times to wind a crossover 30 around the twisting part 29. The above operations are repeated until the diameter of the twisting part 29 gets a prescribed value. Thereby, twisting can be automatically performed on the terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a twisting method for reinforcing the lead wire of a coil, and in particular a twisting method that utilizes a nozzle for winding a bobbin of an automatic winding machine for coils. The present invention relates to a method for twisting a lead wire in an automatic coil winding machine that can twist the lead end of a coil.

``Prior art'' In recent years, with the large-scale integration of electronic circuits, extremely small coils have come to be used, and with miniaturization, the wire materials used for winding are also using ultra-thin diameter wires. ing. Moreover, not only small coils but also many cases where thin wire is used for winding depending on the purpose of use. When winding with thin wire in this way, the terminals pulled out as connection terminals for other electronic components will have weak mechanical strength if soldered as they are to terminal pins or lead wires of other electronic components. However, it is easy to break the wire, and it is not easy to connect it to thick lead wires of other electronic components due to the large difference in wire diameter and the difference in flexibility of the wire material.

For this reason, conventionally, the lead wire of such a coil is
The wires are pulled together multiple times and bundled, and this part is twisted to make the overall diameter of the drawer terminal larger, and the mechanical strength is increased so that it can be easily tied between lead wires of other electronic components, etc. This makes it easy to connect the wires, and prevents wire breakage during soldering.

``Problems to be Solved by the Invention'' However, the above-mentioned method for twisting the lead wire of a coil requires that an operator use an automatic coil winding machine to twist the lead wire after pulling the lead wire multiple times. Currently, the process is carried out manually. With this conventional method of manually wrapping the coil lead wires, the number of coil lead wires that one worker has to process is not very large, and the recent method of manufacturing coils using automatic winding Not only is the workability poor and unsuitable for application to the It was supposed to happen. Moreover, if the coil lead wires are twisted manually, it is difficult to always maintain a constant quality and a clean finish.

Therefore, in view of the above circumstances, the present invention provides an automatic coil winding system that can not only automatically wind the coil without relying on human labor, but also that can twist the lead wire of the coil in an automatic winding machine that automatically winds the coil. The purpose of this invention is to provide a method for twisting lead wires in a machine.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides automatic winding for coils equipped with a nozzle that rotates around a bobbin and winds a wire drawn out from inside the bobbin. At the machine, the wire rod, which is latched on one side to the bobbin, the latching pin, etc., is fed out and hung on the twisting hook placed near the bobbin by moving the nozzle, and then the nozzle is attached to the twisting hook. The above-mentioned twisting hook is rotated while the wire is separated at an appropriate interval from the above, and the first twist is applied to the wire stretched between the twisting hook and the nozzle, and then the nozzle is attached to the twisting hook. The twisting hook is rotated while moving toward the wire, and a second twist is applied by superimposing the wire rod fed out from the nozzle on the first twist portion, and the processing of the first to second twists is performed. This invention is characterized by a method of twisting a lead wire in an automatic coil winding machine, which is repeated several times for each winding.

Embodiment An embodiment of a method for twisting a lead wire in an automatic coil winding machine according to the present invention will be described below with reference to the drawings. First, a description will be given of an automatic coil winding machine that implements the twisting method according to the present invention. In FIG. 1, 1 is the automatic coil winding machine, and 2 is the machine base. A mounting base 3 is provided on the machine base 2. A driving side timing pulley 4 is rotatably supported on the mounting base 3.

A rotating shaft 5 of the driving side timing pulley 4 is connected to an output shaft 8 of a motor 7 via a coupling 6.

The rotation of the motor 7 is numerically controlled and is integrally attached to the mounting base 3 via a stay 9. A driven timing pulley 10 is rotatably supported on the mounting base 3, and a timing belt 12 is wound between the driven timing pulley 10 and the driving timing pulley 4. Driven side timing pulley 1
The rotating shaft of o has a cylindrical portion that protrudes from the mounting base 3 toward the side opposite to the side having the driven side timing boot +710, and serves as the receiving cylindrical portion 13. A mounting shaft 14 is fitted into the receiving cylinder portion 13 so as to be slidable in the axial direction. That is, the receiving cylinder part 13 has the cut groove 15 at a symmetrical position,
On the other hand, a retaining pin 16 is implanted at the base end of the mounting shaft 14, and both ends of the retaining pin 16 protrude in the radial direction of the mounting shaft 14.
Both ends of the retaining pin 16 are loosely inserted into the cutting groove 15, and the mounting shaft 14 is rotatable together with the receiving cylinder part 13 by engagement between both ends of the retaining pin 16 and the groove wall of the cut groove 15. Groove 15
By sliding the retaining pin 16 inside along the longitudinal direction, the mounting shaft I4 can slide in the axial direction with respect to the receiving cylinder part 13. A cap 17 is screwed to the open end of the receiving cylinder 13. The cap 17 has a through hole 18 in the center thereof, into which the mounting shaft 14 is slidably fitted. A spring 19 is inserted between the engagement pin 16, that is, the mounting shaft 14, and the cap 17, for elastically biasing the mounting shaft 14 in a direction in which it is retracted into the receiving cylinder portion 13. The spring 19 is housed between the inner surface of the receiving cylinder 13, which is formed by cutting out the inner surface of the distal end side of the receiving cylinder 13 with a large diameter, and the outer surface of the mounting shaft 14. A twisting hook 20 is screwed to the tip of the mounting shaft 14 that protrudes outward from the through hole 18 of the cap 17. The twisting hook 20 may have an arcuate shape in addition to the L-shape shown in the drawing. Further, the base of the support rod 21 is attached to the mounting base 3. A guide pin 23 is provided at the tip of the support rod 21 and faces between the twisting hook 20 and the bobbin 22.
erected. The position of the guide pin 23 can be adjusted relative to the pobbin 22 or the twist hook 20, and the support rod 21 can be moved in and out of the mounting hole 24 of the mounting base 3. The bobbins 22 are mounted on a conveying device 25 at regular intervals and are intermittently transported to a position for automatic winding.

Above the position for automatic winding, a nozzle 26 is arranged from which the wire is fed out for winding. Nozzle 26
is a so-called 4-axis drive system in which the drive mechanism 27 can move in the front-rear direction (X direction), the left-right direction (Y direction), the up-down direction (Z direction), and rotate (r).

Note that normally, a large number of members, including a receiving cylinder section 13 equipped with the driven side timing pulley 10, a mounting shaft 14, and a twisting hook 20, are arranged in parallel on the mounting base 3, and the driving side timing pulley 4 and the other members are arranged side by side. The timing belt 12 is wound around the timing belt 12 while appropriately intervening a tension pulley between the driven timing pulleys 10 to 10, thereby making it possible to twist the lead wires of a large number of coils at the same time.

Next, a method of twisting a lead wire in an automatic coil winding machine will be explained. For convenience of explanation, first we will explain the method of twisting the winding end of the coil.As shown by the two-dot chain line in FIG. By rotating around the bobbin 22 (rotation r), the body of the bobbin 22 is wound with a predetermined number of turns. Next, the nozzle 26 passes through the side of the guide pin 23 and moves toward the twisting hook 20 , goes half way around the twisting hook 20 , moves toward the guide pin 23 again, and in front of the guide pin 23 . And it is stopped at a position separated from the twisting hook 20 by a predetermined distance. At this time, the wire rod 28 comes into contact with the guide pin 23 from the bobbin 22, and then is hung around the twisting hook 20 and pulled out to reach the nozzle 26. Guide pin 2
3 is a wire rod 2 extending from the bobbin 22 to the twisting hook 20
8 to maintain the tensioned state during this time and to prevent the windings of the bobbin 22 from coming undone, and is unnecessary if such inconvenience does not occur. While maintaining this state, the twisting hook 20 is rotated by a preset number of rotations as shown in FIG. At this time, if the nozzle 26 is placed as close as possible to the wire 28 passing between the guide pin 23 and the twisting hook 20, a clean sintering process can be achieved. The above twisting hook can be rotated 200 times by driving the motor 7.
The driving timing pulley 4 rotates, and the driven timing pulley 10 rotates via the timing belt 12. As the driven timing pulley 10 rotates, the receiving cylinder 13 rotates. Since the engagement pin 16 is engaged with the cut groove 15, the attachment shaft 14 also rotates, so that the twisting hook 20 rotates. The motor 7 is numerically controlled so that the twisting hook 20 rotates a predetermined number of times. When the twisting hook 20 rotates in this manner, the first twill is applied to the wire rod 28 that is wound around the twisting hook 20 between the twisting hook 20 and the nozzle 26. Therefore, the wire 28
The length of the part 29 to which the rope is applied (hereinafter referred to as the twill part) can be determined by adjusting the position of the nozzle 26 and twisting hook 20.
This can be set by selecting the distance between and the nozzle 26.

In this process, as the paste is applied, the
9 is contracted, but the twisting hook 20 is attached to the receiving cylinder part 13.
It protrudes from inside against the elastic biasing force of the spring 19,
It absorbs the contraction force of the twill portion 29. After rotating the twisting hook 20 a predetermined number of times, the nozzle 26 is moved again toward the twisting hook 20 as shown in FIG.
Rotate. By moving the nozzle 26 while rotating the twisting hook 20, the wire rod 28 newly fed out from the nozzle 26 is superimposed on the repaired portion 29, and a second glue is applied. After the nozzle 26 is moved in front of the twisting hook 20 as shown by the two-dot chain line in the fifth cycle, the rotation of the twisting hook 20 is stopped once. In this state, the transition vA30 between the ridged portion 29 and the nozzle 26 is not covered and is pulled out from the middle of the twilled portion 29, which not only looks bad but also becomes a nuisance. For this reason,
After moving the nozzle 26 to a position beyond the twisting hook 20 as shown in FIGS. 5 and 6 while performing a relief operation so as not to contact the twisting hook 20 and stopping the nozzle 26, the twisting hook 20 is removed. It is rotated about 2 to 3 times, that is, the number of times that the crossover wire 30 of the above length can be wrapped around the protrusion portion 29. By this rotation, the connecting wire 30 is wound around the glue portion 29 as shown in FIG. After repeating the above operations until the diameter of the glue portion 29 reaches a predetermined value, as shown in FIG. , one end of the glue portion 29 is pulled out from the twisting hook 20. At the time of this extraction, the nozzle 26 is engaged with the glue part 29 near the twisting hook 20 and moved in the left-right direction (Y direction) as shown by the two-dot chain line in FIG. It is also possible to forcibly extract it from 20. After that, the twill portion 2 is inserted into the nozzle 26.
9, the unsintered portion 31 between the threaded portion 29 and the bobbin 22 is wound, and the unsintered portion 31 is wound around the body of the bobbin 22 to obtain a set number of windings as a whole. You can pull it out from the body of the body as it is and use it as a connection terminal for other electronic components, or you can attach the terminal pin 3 to the bobbin 22.
2.33, it is attached to the terminal pin 33 for the end of winding. The glue portion 29 is attached to the terminal pin 33 while moving the nozzle 26 upward.
This is done by orbiting around 3.

On the other hand, for the winding start end of the coil, the start end of the wire rod 28 is attached to a discard pin 34 for latching the start end, which has been used in the past, as shown by the two-dot chain line in FIG. Then, pull out the wire rod 28 from the disposable pin 34 through the guide pin 23 toward the twisting hook 20, and hang the wire rod 28 around the twisting hook 20.
Thereafter, twist is done in the same manner as above. The winding end of the twisted coil may be pulled out from the body of the bobbin 22 as it is, or it may be attached to the terminal pin 32 of the bobbin 22 in the same manner as described above. Terminal pin 32.3 on bobbin 22
3, the terminal pin 32 for starting the winding can be used instead of the discard pin 34, and it is sufficient to just tie the mended part to the terminal pin 32 after applying the rope. .

In addition, in order to pull out the intermediate tap in the middle of winding the wire around the body of the bobbin 22 and twist the drawn-out portion that should become the intermediate tap, the nozzle 26
After passing through the side of the guide pin 23 as described above, the twisting hook is turned halfway around, and the nozzle 26 is separated from the twisting hook 20 by an amount corresponding to the length of the twist, as shown in Fig. 3. As shown, the twisting hook 20 is rotated to twist the wire 28. In order to further increase the diameter of the twilled portion, the nozzle 26 is moved toward the twisting hook 20 as shown in FIGS. 4 and 5, and the twisting hook 20 is rotated, and the mending portion 29 is The wire rod 28 newly fed out from the nozzle 26 is wound around the wire rod 28 . Thereafter, similarly to the above, the nozzle 26 is moved to a position beyond the twisting hook 20, and the twisting hook 20 is rotated about 2 to 3 times. Furthermore, the nozzle 26 is again moved in the direction away from the twisting hook 20, and the twisting hook 2o is rotated in the same manner as shown in FIG. 3 for pure processing. Thereafter, the above operation is repeated as necessary, but in the case of an intermediate tap, the final pure processing is as shown in FIG. so that it ends when it is in the state where it is.

Thereafter, when the nozzle 26 is made to revolve around the bobbin 22 again to wind the wire around the body of the bobbin 22, the twill portion which is to become the intermediate tap is inevitably pulled out from the body of the bobbin 22.

"Effects of the Invention" As described above, according to the method for twisting a lead wire in an automatic coil winding machine according to the present invention, a twisting hook rotatably driven by a conventional automatic coil winding machine can be used. In addition, it is possible to apply twill to the lead wire of the coil with a simple configuration using a nozzle that can move forward and backward, left and right, up and down, and further rotate, and it can be used to completely process everything from the winding to the lead wire without requiring manual labor. It can be fully automated, and the simple processing of the part that should become the intermediate tap in the middle of the winding can also be performed automatically, which is very convenient in terms of use.

[Brief explanation of drawings]

The drawings show an example of a method for twisting a lead wire in an automatic coil winding machine according to the present invention, and FIG. 1 is a block diagram of the automatic coil winding machine that implements the twisting method, and FIG. is an explanatory diagram showing the operating state of hanging the wire on the twisting hook, Fig. 3 is an explanatory diagram showing the operating state of the first pure processing, and Figs. 4 to 6 are explanatory diagrams showing the operating state of the second pure processing. FIG. 7 is an explanatory diagram showing the operating state. FIG. 7 is an explanatory diagram showing the operation of pulling out the twill portion from the twisting hook. 1... Automatic winding machine for coils 20... Hook for twisting

Claims (1)

[Claims] In an automatic coil winding machine equipped with a nozzle that rotates around the bobbin and winds the wire drawn out from inside the bobbin, the nozzle moves to the twisting hook disposed near the bobbin. After letting out and hanging the wire rod, which is latched on one side to a member such as a latching pin, the twisting hook is rotated with the nozzle separated from the twisting hook at an appropriate distance. A first twist is applied to the wire stretched between the twisting hook and the nozzle, and then the twisting hook is rotated while moving the nozzle toward the twisting hook, so that the first twist is attached to the first twist. A drawing-out wire in an automatic winding machine for coils, characterized in that the wire drawn out from the nozzle is overlapped and given a second twist, and the above-mentioned first to second twists are repeated an appropriate number of times. Twist method.