JPS6244809B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a coated wire coil by continuously forming a coil.

Conventionally, coated wire coils, such as those shown in Figure 1, are wound and formed using a winding machine and then inserted into other parts such as a board to make a conductive connection, so the coating layer at both ends of the coil is peeled off. There is a need to. However, after winding and forming, if you try to mechanically peel off the coating layer at both coil ends all around the circumference and to some extent deep to the base of the coil ends with a peeling blade, etc. It is necessary to position both coil end portions by grasping the coil with a certain degree of firmness, insert the above-mentioned peeling blade, etc. into this, and move it in the direction of the core line of the coil end portions while rotating relative to each other. However, since the coil portion is firmly gripped with a chuck or the like, there is a drawback that the coil portion is deformed and the characteristics of the coil are changed, resulting in a defective product. In addition, in order to eliminate poor conductive contact between the coil end and the substrate, it is necessary to apply a coating layer deep to the base of the coil end. It was not possible to remove the coating layer smoothly to the root. Conventionally, the wire-wound coils were manually grasped one by one with tweezers to avoid deformation, and the ends of the coils were immersed in a high-temperature solder pot, and the coating layer was melted and removed by the soldering heat. .

In this method, the dimensions of the melted and removed film layer vary due to manual work, resulting in poor conductivity and inefficiency when assembled into a substrate or the like.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to make the characteristics uniform, and to be able to efficiently and continuously manufacture soldered coated wire coils so that they can be incorporated into substrates, etc. without any trouble. The present invention provides a method for manufacturing a coil of coated wire.

That is, in order to achieve the above object, the present invention automatically controls a driving means for rotating a bobbin around which a coated wire is wound, unwinds the coated wire from the bobbin, and sends out a continuous coated wire at a substantially constant speed. The feeding amount of the wire rod is detected by a feeding amount detection means, and the coating layer is scraped by a rotating blade on the fed coated wire, and the coating layer is kept constant by opening and closing the cutter based on the detected feeding amount. The peeled continuous coated wire is passed through a linearly arranged flux applicator, a jet soldering tank, and a flux cleaning device to reach the peeled portion and apply solder. Regarding the continuous coated wire material that has been fed out after being applied and soldered, the feeding position is corrected while detecting the boundary between the part that has been soldered and the part that has not been soldered, and the feeding device is used to adjust the feeding position. A winding shaft equipped with a winding core and a presser piece at one end is rotated forward and backward, and the winding shaft is formed into a coil shape by cooperating with the operation of a forming means that reciprocates in the axial direction, and then soldering is applied. This is a method for manufacturing a coated wire coil, which is characterized in that the coil is continuously and automatically manufactured by cutting at a predetermined location with a cutter.

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

FIG. 2 shows a production process diagram according to the present invention. That is, 3 is a peeling step in which a long continuous coated wire 2 housed in a bobbin or the like is used to peel off the coated layer in a predetermined length region at a constant pitch. 4 is peeling process 3
This is a pick-up soldering process in which pick-up solder is applied to the peeled part in the form of a continuous wire. 5 is a coil 1 of a coated wire shown in FIG. 1 by winding and forming the part of the continuous wire that has been soldered in the welcome soldering step 4 and cutting the center of the soldered part. This is the winding forming process. The coated wire coil 1 may be wound, or may have an L-shape or multiple bends.

FIG. 3 is a perspective view showing the overall configuration of an embodiment of the coated wire coil manufacturing apparatus according to the present invention. That is, the continuous coated wire 2 is sent out in the direction of the arrow, and undergoes a peeling process 3, a soldering process 4, and a winding forming process to manufacture the coil 1. Reference numeral 6 denotes a wire feeding device that unwinds and feeds continuous coated wire 2 from coated wire bobbin 7 while applying a constant tension to the feed speed, and a coated wire bobbin 7 that stores coated wire 2 by continuously winding it. A motor 8 that rotationally drives the bobbin 7 to unwind the continuous coated wire 2 from the bobbin 7, a guide roller 9 for changing the direction of the continuous coated wire 2 sent out from the bobbin 7, and the guide roller 9. A spring 11 applies a predetermined tension to the coated wire 2 fed out from the wafer, and a tension arm 10 is swingably supported, and the bobbin 2 is driven to rotate in accordance with the amount of swing of the tension arm. It consists of a tension arm swing amount detection means (not shown) that applies a constant tension to the coated wire 2. 12 is a continuous coated wire 2 fed out from the wire feeding device 6
This guide roller is attached to the right end of the base 13. Reference numeral 14 denotes a coating peeling device in which a plurality of blades rotate at high speed around the continuous coated wire 2 fed out from the wire feeding device 6, and partially removes the coating layer of the coated wire 2 over the entire circumference. , a blade part 15 in which a continuous coated wire is passed through the center and a plurality of blades are formed around it so that they can be opened and closed; a bearing part 16 rotatably supports the blade part 15; and the blade part 15 is rotated by a belt 17. The container 1 includes a driving motor 18 and a container 19 for collecting the scraps from which the coating layer has been removed by the blade part 15.
9 is connected to a suction passage 20 for sucking debris. Reference numeral 21 denotes a flux coating device that applies liquid flux to the portion 2A from which a predetermined length of the coating layer has been peeled off, as shown in FIG. 4, in order to improve solderability. A felt (not shown) that is permeable to the liquid flux is fixed in the filled tank 22 so as to extend above the liquid, and the coated wire 2 is passed through the felt that extends upward. A liquid flake is applied all around the area. 25 is a jet-flow type soldering device which prevents the coating part of the coated wire 2 from being thermally destroyed and maintains the temperature at which only the peeled part 2A shown in FIG. It is equipped with a solder tank and configured to allow the coated wire 2 to pass through the solder jet.
Reference numeral 24 has the same structure as the flux coating device 21 described above, and is a flux cleaning device for cleaning deposits such as liquid flux adhering to the coated wire 2, and a tank 25 is filled with a cleaning liquid. 25
is a peeling pitch control device that controls the continuous feeding speed of the coated wire 2 and the opening and closing of the cutter section 15 of the coat stripping device 14, and a tension roller is connected to a drive shaft 28 connected to the output shaft of a motor 27. A gear 30 is fixed to a winding drum 29 which is sandwiched between a winding drum 29 and a gear 30 for winding and feeding out at least one turn of the coated wire 2 without slipping, and a rotation angle is set to another gear 31 that meshes with this gear 30. A rotary encoder 32 for detection is connected. Then, the coated wire 2 is wound around the winding drum 29, and the wire is sent out by the rotation of the motor 27 without slipping, and the signal from the rotary encoder 32 is sent via the control device 34 as a peeling pitch signal to peel off the coating so that the peeling pitch is constant. The signal is transmitted to the opening/closing drive section of the blade section 15 of the device 14.

35 corrects minute positional deviations that occur during winding and forming of the coated wire 2 that has been soldered to peel at a constant pitch, and is controlled so that the solder portion 2A that is peeled is always located at the end of the coil after winding and forming. As shown in FIG. 5, a device for correcting the position of the peeled solder portion is installed so that the coated wire 2 is sandwiched between the feeding passage points of the coated wire 2 of the winding machine 37, and the peeled solder portion 2A is electrically adjusted. The detection device 36 detects from the terminal 38, and the minute feed DC motor 39 is driven until the detection device 36 detects the starting end of the peeled solder portion 2A, and the feed piece 40 and the feed pawl 4 are driven.
a correction device 42 which clamps the coated wire 2 by the 1 and 1 and gives minute feed to stop it; and the correction device 4
2 corrects the position of the peeled solder portion 2A, and then feeds out a predetermined amount of the leading end of the coated wire 2 and loads it into a winding machine. That is, the detection device 36 is connected to the fixed electrical contact 4
4a, a movable electrical contact 44b that is swingably supported and clamps the coated wire 2 under the pressure of a spring 45, a power source E that applies voltage to the electrical contact 44a and the movable electrical contact 44b, and its circuit. It is composed of a resistor R connected therebetween and an output terminal 38. Further, the correction device 42 is directly connected to a slide piece 46 that supports the entire slide piece 46, a minute feed DC motor 39 attached to the slide piece 46, and an output shaft of the minute feed DC motor 39, and is rotatably connected to the slide piece 46. a supported trapezoidal screw 47;
A feed piece 40 that engages with the trapezoidal screw 47, moves while being guided along a guide rail 48, and has a protrusion formed so as to clamp the coated wire 2 from below.
A feeder whose tip is pointed opposite to the protrusion of the feeder piece 40, is rotatably supported by the feeder piece 40 by a pin 47, and is biased counterclockwise by a rotational force by a pressing spring 48. It is composed of a claw 41. Further, the feeding device 43 supports the slide piece 46 so as to be slidable in the direction of the core line of the wire rod 2, and applies a suppressing force to the slide rail 49 fixed to the base 50 and the slide piece 46 in the right direction. The spring 51 suspended between the slide piece 46 and the slide rail 49 and the slide piece 46
slide rail 4 so as to regulate the position of the right end of
The stopper bolt 52 that is freely adjustable attached to the right end of 9 and the pin attached to the left end of base 5
0, the right end is connected to the slide piece 46 with a pin, and the cam follower 56 that engages with the cam 54 attached to the drive shaft 53 is attached. and a feed lever 57 that sends the cam rise to the left (in the direction of arrow D). Reference numeral 37 is a winding machine, and at one end there is a piece 58 that presses down the outside of the coated wire 2 that is fed from the solder part position correcting device 35 for peeling off while keeping the l dimension as shown in FIG. 5 constant.
A winding shaft 61 is equipped with a winding core 59 of a coil, and a pinion 60 is attached to the other end, and swings along a grooved cam 64 of a drive shaft 53 to engage a plate 62 to move the winding shaft 61 backward and forward. a cam follower lever 63 to be returned; a spring 65 to always keep the plate 62 engaged with the cam follower lever 63;
A rack 68 that moves in the direction of the arrow along a groove formed in the base 50 by a crank motion of a gear 66 that rotates the drive shaft 53 with a crank lever 67 and meshes with the pinion 60;
It consists of a belt 70 connected to a pulley 69 attached to the output shaft of the motor so as to rotate the motor, a pulley 71, a shaft 72, and a gear 73. Reference numeral 75 denotes a cutter receiver, and 76 a cutter, which cuts the peeling soldering portion 2a at the terminal end of the coil with the approximately center thereof inserted into the guide hole 74. 77 shown in FIG. 7 drops the formed coil wound around the winding core 59,
This is an opening for storage into the storage box 78 shown in FIG.

With the above configuration, the continuous coated wire 2 is transferred from the bobbin 7 of the wire feeding device 6 to the tension arm 1.
It is unwound by the motor 8 which operates according to the amount of oscillation of 0, and is sent out with a substantially constant tension.
The continuous coated wire 2 fed out by the wire feeding device 6 is moved at a constant speed by the winding drum 29 of the peel pitch control device 25 without slipping, and is moved by the rotary encoder of the peel pitch control device 25. When the blade part 15 of the coating peeling device 14 is closed for a predetermined period of time in response to a signal from 32,
The rotation from the motor 18 scrapes off the coating layer around the entire circumference of the predetermined area 2A of the coated wire 2, forming a continuous coated wire 2 as shown in FIG. Next, flux is applied to the entire circumference of the coated wire 2 by a flux application device 21.
Subsequently, the peeled portion 2A is soldered by the pick-up soldering device 23.
The flux cleaning device 24
By this, deposits such as liquid flux adhering to the coated wire 2 are cleaned.

Next, the soldered continuous coated wire 2 that reaches the peeling part 2A at a constant pitch is led to the peeling solder part position correction device 35 in a slack and stored state, and is pinched by the feed piece 40 and the feed pawl 41. In this state, the minute feed DC motor 39 is operated from the right end (start position) in FIG. 5, and minute feed is applied to the left. Subsequently, when the tip of the peeled solder portion 2A reaches the electrical contacts 44a, 44b of the detection device 36, a signal is detected from the terminal 38, the minute feed DC motor 39 is stopped, and the position correction of the coated wire 2 is completed. In this state, the drive shaft 53 is rotationally driven by the power of the motor, and first, the cam 5
4, the slide piece 46 advances to the left and loads the leading end of the coated wire 2 between the presser piece 58 and the winding core 59 as shown in FIG. Then, the crank lever 67 connected to the gear 66 moves from the dead center to the movable region, so the rack 68 begins to move, the winding shaft 61 rotates, and the rotation of the grooved cam 64 causes the winding shaft 61 to move around the coil. A coil is formed by winding a predetermined number of turns around the winding core 59 by retreating according to the winding pitch. Next, gear 6
6 rotates 180 degrees and the crank lever 67 reaches another dead point, and the rack 68 stops and starts returning in the opposite direction, the coil wound around the winding core 59 becomes loose, and at the same time, the grooved cam 64 loosens. As a result of the rotation, the winding shaft 61 is significantly moved back, and the rear end of the coil is supported in the guide hole 74 of the cutter portion. Next, the cutter 76 is lowered to cut the rear end of the coil, that is, approximately the center of the peeling soldering portion 2A, to form the coil 1 shown in FIG. 1, which is stored in the storage box 78 through the passage 77. . At the same time, the slide piece 46, feed piece 40, and feed pawl 41 return to their original positions. By repeating the above operations, the coil 1 shown in FIG. 1 is manufactured continuously and automatically.

As explained above, according to the present invention, the coating layer in a predetermined area is first mechanically removed from a continuous coated wire, and then the wire is wound and formed, and the terminal end thereof is cut. This eliminates the need to deform the coil part, ensuring uniform performance at all times, and eliminates the need to melt and remove the coating layer with soldering heat, which is the case with conventional methods where the coating layer is removed by melting and adhering to the boundary area from hot molten material. Therefore, it can be easily loaded onto a substrate etc. without special work, and workability can be significantly improved. Further, according to the present invention, it is possible to perform pick-up and soldering continuously without manual work, and it is also possible to continuously form the coil so that the peeled part always comes to the end of the coil without adversely affecting the characteristics. Make the most of your efforts.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of a coil to which the present invention is applied, Fig. 2 is a diagram showing a production process according to the present invention, and Fig. 3 is a perspective view showing an embodiment of a coil manufacturing apparatus for coated wire according to the present invention. , FIG. 4 is a diagram showing a continuous coated wire formed by the coating stripping device shown in FIG. 3, and FIG. 5 is a front view showing an outline of the device for correcting the position of the solder portion before peeling shown in FIG. 3. , Figure 6 is the third
FIG. 7 is a perspective view showing the outline of the winding machine shown in FIG. 3. FIG. Explanation of symbols, 1...Coil, 2...Coated wire,
2A... Film peeling part, 6... Wire feeding device,
7...Bobbin, 10...Tension arm, 14
...Film stripping device, 15...Cutter section, 21...Flux coating device, 23...Soldering device, 24
... Flux cleaning device, 28 ... Wrapping drum,
32... Rotary encoder, 35... Solder part position correction device for peeling, 36... Detection device, 37
...Winding machine, 39...Minute feed DC motor, 40
...Feeding frame, 41...Feeding claw, 58...Presser frame, 59...Reel core, 76...Cutter.

Claims (1)

[Claims] 1 Automatically controls the driving means for rotationally driving the bobbin around which the coated wire is wound, unwinds the coated wire from the bobbin, feeds out a continuous coated wire at a substantially constant speed, and detects the feed rate of the coated wire by using the feed rate detection means. At the same time, the coating layer is scraped by a rotating cutter on the fed coated wire, and the cutter is opened and closed based on the detected feed amount to peel off the coated layer at a certain pitch, and the peeled The continuous coated wire is passed through a linearly arranged flux applicator, a jet soldering tank, and a flux cleaning device to apply pick-up solder to the peeled parts. Regarding the coated wire rod, the feeding position was corrected while the boundary between the pick-up soldered part and the pick-up and unsoldered part was detected by the successive detection device, and the feeding device was used to feed the wire, and a winding core and a presser piece were provided at one end. The coil is formed into a coil shape by rotating the winding shaft in forward and reverse directions and in conjunction with the operation of a forming means that moves it back and forth in the axial direction.Then, the predetermined portions where the pick-up solder has been applied are cut with a cutter to form the coil. A method for manufacturing a coated wire coil, characterized by continuous manufacturing.