JPH01297804A - Winding system of electronic component - Google Patents

Abstract

PURPOSE:To wind a wire of a fixed length around a mainframe part correctly with certainly, by performing stationary winding of the wires a prescribed number of turns and after that, making corrections for initial winding according to the winding length of a remained wire as well as the diameter and length of a resistor part. CONSTITUTION:This device allows a rotating chuck means 10 to hold a position at a removable station and a work 1 permits lead parts 3 to be inserted into inserting holes 14 of a pair of chuck members 12 which are facing each other and then, makes pressing members 16 to hold the lead parts. Further, the chuck means 10 is reversed so that the chuck members 12 are located at the working station. Then, a wire guide member 30 actuates a chuck claw 31 to chuck the tip of a wire 4 and then, a reciprocating cylinder 34 is actuated to abut on the lead parts. The abutment parts are welded and fixed. Then, the rotation of a motor 24 makes the work 1 rotate and its rotation winds the wire 4 around the lead parts 3. Subsequently, the winding quantity of the wire 4 to the resistance part 2 is held constant and corrections are made so that difference in winding length which arises because of the dimensional error of the resistance part 2 is prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field J] The present invention relates to an electronic component in which lead parts are attached to both sides of a main body part. This relates to a winding method for winding the wire between the wires.

[Prior Art] As an electronic component, a main body made of an electrically insulating material has lead parts connected to each other on both sides. There is a sensor in which a wire is wound around the wire and the electrical resistance value between the lead parts is measured to detect temperature changes in the main body part. In order to wind a wire around the electronic component main body of the electronic component, both lead portions of the workpiece are supported by rotary chuck means, and the workpiece is rotated by the rotary chuck means and one end is welded to the workpiece. The wire fixed by means such as
A method is conventionally known in which the wire is moved around the workpiece at a predetermined pitch by moving the wire in the axial direction of the workpiece.

On the other hand, in such electronic components, the length of the wire wound around the main body of the electronic component must be constant, and even if there is a slight difference in the length of the wire, , the accuracy of the product deteriorates. For this purpose, a fixed length of wire is wound around the main body by strictly controlling the number of rotations of the work by the rotary chuck means and the moving speed of the wire in the axial direction of the work.

[Problem to be Solved by the Invention 1] By the way, in order to make the length of the wire wrapped around the main body of the electronic component main body constant, the diameter and length of the main body must be constant. It won't happen. However, the dimensions of the main body are not necessarily perfectly controlled, and there are slight variations in dimensions.

Here, the length of the wire wound around the main body is short;
Also, if the pitch of the winding rate is coarse, slight dimensional errors will not be such a problem, but as the pitch interval of the winding rate becomes smaller and the winding length becomes longer,
Since the influence of dimensional errors in the main body becomes large, there is a high possibility that a difference in winding length that exceeds the permissible limit will occur, resulting in a disadvantage that the yield of the product will be poor.

The present invention has been made in view of the above points, and its purpose is to be able to wrap a wire of a constant length regardless of the dimensional error of the main body of the electronic component main body. An object of the present invention is to provide a winding method for electronic components.

[Means for Solving the Problems 1] In order to achieve the above-mentioned object, the present invention provides a rotary chuck means that chucks and rotates both lead parts of an electronic component main body in which lead parts are connected to both ends of the main body part. , a wire supply means for winding a wire from one lead part through the main body part to the other lead part while rotating the electronic component main body, and measuring the diameter and length of the main body part. It comprises a shape recognition means and a resistance value measuring means for measuring the resistance value of the wire, the diameter and length of the main body are detected in advance by the shape recognition means, and the wire is wound steadily a predetermined number of times. After the winding is completed, the remaining wire winding length is detected by measuring the electrical resistance value between the parts where winding has been completed by the resistance value measuring means, and the wire winding length is determined according to the diameter and length of the main body part. The present invention is characterized in that the winding length of the wire around the main body portion is made constant by performing correction winding by controlling the number of winding turns and the pitch interval.

[Function] In this way, after winding the wire a predetermined number of times, correction winding is performed based on the remaining winding length of the wire and the diameter and length of the resistor, thereby making it possible to improve the quality of electronic components. Even if there is an error in the diameter and length of the main body, a wire of a certain length can be wound around the main body accurately and reliably. Moreover, since this winding length correction is done after winding the wire up to a certain length,
Until this correction winding is performed, winding can be performed at high speed, and a decrease in winding processing speed can be kept to a minimum.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

First, FIG. 1(a) shows the overall configuration of an apparatus for implementing the winding method according to the present invention. In the figure, 1 is a workpiece, and this workpiece 1 is a stepped electronic component formed by attaching lead parts 3.3 to both ends of a resistor part 2. While the workpiece 1 is supported by the rotary chuck means 10 and rotated by the rotary chuck means, winding processing is performed by the wire 4 as shown in FIG. 1(b). There is.

Here, the rotary chuck means 10 has a chuck body 11 consisting of each pair of arms flb extending in both axial directions at both ends of a main shaft portion 11a, and a tip portion of each arm flb in the chuck body 11. Work 1
A chuck member 12 for chucking the lead portion 3 is attached. As shown in FIG. 2, this chuck member 12 has a cylindrical support portion 13.
An insertion hole 14 is bored into which the lead part 3 of the workpiece 1 is inserted in the axial direction, and a notch 15 is formed in the circumferential body at the intermediate part thereof, and the leading end of the lead part 3 is guided to a position where the notch 15 is formed. In this way, the lead part 3 can be inserted into the insertion hole 14 and chucked by rotating the holding member 16 installed on the arm llb and pressing the lead part 3. Thereby, even if the lead portion 3 is made of a thin and flexible wire, it can be chucked in a stable state.

A forward/reverse rotation motor 17 is provided to rotate the workpiece 1 while the lead parts 3 connected to both ends of the resistor part 2 are chucked by the chuck member 12 as described above. The output shaft 17a extends through the main shaft portion 11a of the chuck body 11 of the rotary chuck means lO, and the output shaft 17a of the chuck body 1 of the output shaft 17a
Drive gears 18 are mounted on both sides of the drive gear 1, respectively.

Each of the chuck members 12 is meshed with a two-part driven gear 19 that rotates each chuck member 12 . As a result, when the motor 17 is driven, the chuck member 12 rotates, and the workpiece 1 chucked by the chuck member 12 is rotated. Note that the chuck body 11 has its main shaft portion 11a.
It is designed to be reversed every 180° with the center as the center.
The lower part of FIG. 1(a) forms an attachment/detachment station where the warb is attached and detached, and the upper part of the figure, which is reversed 180 degrees from this attachment/detachment station,
A work station is formed in which the winding process is carried out.

The work station is provided with a wire supply section 20 that supplies wire 4 to be wound around the warb. The wire supply section 20 has a guide roller 22 mounted on a slide block 21 that can reciprocate in a direction parallel to the axis of the warb, and the wire 4 is guided by the guide roller 22. In order to reciprocate the slide block 21, the slide block 21 is connected to a reciprocating member 23 equipped with a feed screw, a pushing means, etc., and the reciprocating member 24
By operating the forward and reverse rotation motor 24, the slide block 21 is moved in the direction of arrow A and arrow B in FIG. 1(a).
It is now possible to move in the direction.

Furthermore, a wire guide member 30 is used to guide the tip of the wire 4 from the wire supply section 20 to the lead section 3 of the workpiece 1.
is provided. This wire guide member 30
As shown in FIGS. (a) and (b), it has chuck claws 31 for chucking the wire 4, and by opening and closing the chuck claws 31, the wire 4 can be attached and detached. This chuck jaw 31 is supported by an elevating cylinder 32, and a movable base 33 on which the elevating cylinder 32 is mounted is reciprocated by a reciprocating cylinder 34, so that the chuck claw 31 The chucked wire 4 is configured to jump over the workpiece 1 and then be pulled out to a position closer to the main shaft 11a than the workpiece 1 so as to be able to contact the lead portion 3 of the workpiece 1.

Furthermore, welding means is used to fix the end of this wire 4 to the lead part 3 of the workpiece 1, and the welding rod 40 in this welding means is placed at a standby position separated from the workpiece 1 and at a winding position on the workpiece 1. The wire 4 can be positioned at three positions, a starting end position and a winding end position, and the wire 4 can be welded to the lead part 3 at the winding starting end position and the winding end position. There is.

The winding device is constructed as described above, but this winding device is equipped with a correction mechanism for correcting the winding length of the wire 4 around the resistor portion 2, as shown in FIG. There is. This correction mechanism includes a shape recognition means 50 for recognizing the diameter and total length of the resistor section 2, and a shape recognition means 50 for recognizing the diameter and overall length of the resistor section 2.
After a predetermined amount of wire 4 is wound around the wire 4, the resistance value measuring means 51 measures the resistance value corresponding to the length of the wire. The shape recognition means 50 is composed of a camera 50a and an image processing device 50b that processes an image signal from the camera 50a, and a resistance value measuring means 5.
1 is composed of a pair of probes 51a, 51a and a resistance meter 51b.

The data regarding the diameter and overall length of the resistor section 2 detected by the shape recognition means 50 and the data regarding the resistance value detected by the resistance value measuring means 51 are input to the data processing means 52. Then, the data processing means 52 detects the winding length of the remaining wire 4 based on the signal from the low-known measuring means 51, and also detects the winding length of the remaining wire 4 and the diameter and length of the resistor part 2 from the shape recognition means 50. The number of winding turns and the pitch interval of the remaining wire 4 can be calculated based on the data regarding the winding speed, and the operation of the motor 17 and 24 can be controlled.

The apparatus for carrying out the method of the present invention is generally constructed as described above, and a method of winding the workpiece 1 using this apparatus will now be described.

First, the rotary chuck means 10 is located at the attachment/detachment station, and the workpiece 1 is inserted into the insertion hole 14 of the pair of opposing chuck members 12 by appropriate means, and the holding member 18 is actuated. Lead part 3 is insertion hole 1
Maintain it so that it does not deviate from 4. Therefore, the rotary chuck means 1o is reversed so that the chuck member 12 that has chucked the workpiece 1 at the attachment/detachment station is positioned at the work station.

When the workpiece 1 is carried to the work station as described above, the wire guide member 30 is first activated, the chuck claw 31 chucks the tip of the wire 4, and the reciprocating cylinder 34 is activated, thereby moving the movable base 33. At the same time, in order to prevent the chuck jaws 31 from interfering with the work l, the lifting cylinder 32 pulls up the chuck jaws 31 so as to overcome the work l, and at the end of the forward stroke of the reciprocating cylinder 34, the chuck jaws 31 are raised again. The lifting cylinder 32 is lowered. As a result, the wire 4 chucked by the chuck claw 31 is lowered and comes into contact with the lead portion 3 of the workpiece 1 . Therefore, welding rod 4
0 from the standby position to the winding start position,
The wire 4 is fixed by welding the contact portion to the lead portion 3.

Next, while the end of the wire 4 is still chucked by the chuck claw 31 of the wire guide member 30, the motor 2
4 to move the slide block 21 to the first position.
The wire 4 is moved in advance in the direction of arrow A in Figure (a).
The chuck member 12 is rotationally driven by the motor 17 while being guided in this direction. As a result, the workpiece 1 is rotated, and the wire 4 is first wound around the lead portion 3. If the slide block 21 is fed at a constant speed and the rotational speed of the workpiece 1 by the rotary chuck means 1O is kept constant, the winding pitch of the wire 4 will be constant.

Therefore, when the wire 4 reaches the step between the lead part 3 and the resistor part 2, the leading slide block 21 is first returned in the direction of arrow B while the motor 17 continues to rotate. The state is perpendicular to the axis of the workpiece 1.

Therefore, the rotation of the workpiece 1 by the motor 17 is temporarily stopped, and in this state, the slide broach 21 is largely moved in the direction of arrow A and then stopped. Then, by rotating the motor 17 by a predetermined amount, the wire 4 rides on the resistor section 2. Then, in order to adjust the pitch of the winding, by returning the slide block 21 once in the direction of arrow B while rotating the motor 17 in reverse, the wire 4 is wound back to the starting end portion where the resistor section 2 is wound. In this state, the slide block 21 is sent at a constant speed in the direction of arrow A, and the motor 17 is rotated in the forward direction, thereby winding the wire 4 around the resistor section 2 at predetermined pitch intervals.

Here, the resistance value changes depending on the winding length of the wire 4 in the resistor portion 2, and in order to keep this resistance value constant, it is necessary to keep the winding amount of the wire 4 constant. However, if there is an error in the diameter, length, etc. of the resistor section 2, the length of the winding will vary if it is controlled by the number of windings. Therefore, this resistor section 2
Correction is performed to prevent differences in the winding length of the wire 4 due to dimensional errors.

Therefore, in FIG. 4, the steady winding length L of the resistor section 2 is
When the wire 4 is wound, the motor 17.2
Stop the operation of 4. Therefore, the probes 51a, 51a of the resistance value measuring means 51 are brought into contact with both ends of the wire 4 already wound around the resistor section 2, and the resistance value therebetween is measured. Then, the data of this measurement value is input to the data processing means 52, and the length of the remaining wire 4 that needs to be wrapped around the resistor section 2 is calculated from the resistivity of the wire 4 set in advance in the data processing means 52. calculate. At the same time, the camera 50a of the shape recognition means 50 images the resistor section 2, the image processing device 50b detects its diameter and the length of the remaining wrapped portion, and this data is sent to the data processing means 50.
2, the number of winding turns and the pitch interval of the correction winding are calculated from this and the data regarding the remaining wire length to be wound around the resistor section 2, and the motors 17 and 24 are operated based on this. By controlling , the remaining wire length is corrected to the end position of the resistor section 2 . This allows the length of the wire 4 to be wound around the resistor portion 2 to be constant.

Here, the length of the resistor section 2 in the axial direction during the steady winding of the wire 4 described above can be determined in order to shorten the winding processing time, since this steady winding can be performed at high speed. It is preferable to set the winding length to be as long as possible and to reduce the correction winding length.

When the winding of the wire 4 around the resistor section 2 is completed as described above, the operation of the motors 17 and 24 is performed in the same way as for the wire 4 running onto the resistor section 2 as described above. The lead portion 3 is pulled down. After that, when the winding of the wire 4 to the terminal position on the lead portion 3 is completed, the welding rod 40 returns to the standby position.
moves to the winding end position and welds the wire 4. Thereafter, while the chuck claw 31 of the wire guide member 30 continues to chuck the tip of the wire 4, it is raised by the elevating cylinder 32, and the reciprocating cylinder 34 is contracted. Here, since the winding starting end portion of the wire 4 is weak due to welding, the wire 4
is cut from the welded part of the lead part 3, and the chuck claw 3
1, the excess wire 4 is removed. Then, the slide block 21 is returned in the direction of arrow B, and the portion between the winding end portion of the wire 4 and the idle roller 22 of the slide block 21 is chucked by the chuck claw 31, and a tensile force is applied to the wire 4. In addition, the wire 4 will be cut from the end weld in the lead 3.

After the winding of the workpiece 1 is completed as described above, if the rotary chuck means 10 is reversed, the wire-wound workpiece 1 returns to the attachment/detachment station, and the workpiece 1 is detached from the rotary chuck means 10. At the same time, the work 1 chucked by the other pair of chuck members 12 is moved to the work station, and the winding process for the work 1 can be performed in the same manner as described above.

[Effects of the Invention] As detailed above, according to the present invention, after winding the wire around the main body portion at a predetermined number of times, the winding length of the remaining wire and the diameter and height of the resistor portion are determined. Since the correction winding is performed, even if there is an error in the diameter and length of the main body of the electronic component,
It becomes possible to accurately and reliably wind a certain length of wire around the main body.

[Brief explanation of the drawing]

The drawings illustrate the configuration of a device for carrying out the method of the present invention, and FIG. 1(a) is an overall configuration diagram of a winding device, and FIG. 1(b) is a diagram of a wire winding device for winding a work. 2 is an explanatory diagram of the configuration of the chuck member, FIG. 3(a) is an explanatory diagram of the configuration of the workpiece chuck member, and FIG.
b) is an explanatory diagram of the configuration of the chuck jaw, and FIG. 4 is an explanatory diagram of the configuration of the correction mechanism. 1: Workpiece, 2: Resistor part, 3: Lead part, 4:
Wire, 10: Rotating chuck means, 12: Chuck member, 17: Forward/reverse rotation motor, 20: Wire supply section, 21 Nishlide block, 23: Reciprocating movement member, 24: Forward/reverse rotation motor, 30: Wire guide member , 31: chuck claw, 50: shape recognition means, 50a: camera, 50b=image processing device, 51: resistance value measuring means, 51a nib lobe, 51b: resistance meter, 52: data processing means.

Claims (1)

[Claims] A rotary chuck means that chucks and rotates both lead parts of an electronic component body, which has lead parts connected to both ends of the main body part, and rotates the leads from one lead part through the main body part while rotating the electronic component body. A wire supply means for winding the wire before reaching the main body part, a shape recognition means for measuring the diameter and length of the main body part, and a resistance value measuring means for measuring the resistance value of the wire, The diameter and length of the main body portion are detected in advance by the shape recognition means, and after the wire is steadily wound a predetermined number of times, the electrical resistance value between the wound portions is measured by the resistance value measurement means. By detecting the remaining wire winding length and performing correction winding by controlling the number of winding turns and pitch interval of the wire according to the diameter and length of the main body, A winding method for electronic components characterized by a method in which the wire is wound at a constant length.