JPS63289898A - Device for mounting coil - Google Patents

Abstract

PURPOSE:To mount a coil surely and stably by a method wherein whether an insertion operation is executed correctly is judged by a displacement amount within a prescribed duration of an insertion means detected by a detection means and the insertion operation is then terminated or interrupted. CONSTITUTION:After a prescribed duration has elapsed from a start of an insertion operation, a judgement circuit 11 compares a displacement amount detected by a displacement sensor 10 with a prescribed insertion amount. If the displacement amount exceeds the prescribed insertion amount, the insertion operation has been executed correctly; accordingly, a suction chuck installed at an ejector 3 stops a suction operation, detaches a coil 1 from a mounting head 2 and completes the insertion operation. On the other hand, if the displacement amount does not reach the prescribed insertion amount, the coil 1 is defective and leads 12 are not inserted into insertion holes correctly; a signal to stop the insertion operation is output. Following this signal, the insertion operation is stopped; a positioning arm 6 shifts the mounting head 2 to a prescribed tray for mounting the defective coil. After that, the coil 1 is discharged from the mounting head 2; a new coil is mounted and the insertion operation of the coil is resumed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a coil mounting device for inserting a wound coil onto a substrate.

(Conventional technology) In the conventional technology, a coil mounting device for inserting a wound coil has a coil insertion part that is capable of holding the coil detachably attached to a fixed board, and is predetermined on the board by a predetermined means. The coil insertion portion inserts the coil with a predetermined pressing force. There are also devices that reduce the resistance during insertion by vibrating the insertion portion or the board during insertion. The inserted coil is inspected visually or by another inspection device to see if it has been inserted correctly.

(Problems to be Solved by the Invention) In the conventional technology, inspection was performed visually or by another inspection device after the coil mounting device inserted the coil, so when a problem like the one shown in Fig. 3 occurs, It was necessary to remove the defective mounted coil and reinsert the coil. In such a case, an inspection device must be installed, and the inspection also takes time and effort. Furthermore, since a highly reliable testing method has not been developed for conventional testing equipment, even if the testing equipment is used, defective products may be produced due to incorrect judgment by the testing equipment. In addition, if the lead is not inserted correctly into the insertion hole of the board during insertion, the pressing force of the insertion means is greater than the elastic area of the lead of the coil.
There was a problem with the leads bending. In such cases, if the lead is inserted only on one side, it appears that the coil is correctly mounted on the board, so visual inspection using an imaging device or the like often leads to erroneous judgments.

The present invention solves the above-mentioned problems and provides a reliable and stable coil mounting apparatus that does not require post-mounting inspection.

[Structure of the Invention] (Means for Solving the Problems) A coil mounting device for mounting a wound wire coil at a predetermined position on a substrate includes a holding means provided opposite to the substrate and detachably holding the coil; an insertion means for inserting the holding means into the insertion hole of the substrate with a predetermined pressing force within the elastic region of the coil lead; a detection means for detecting the displacement amount of the insertion means; and a detection means for detecting the amount of displacement of the insertion means; The coil mounting apparatus is provided with an insertion control section that determines whether the insertion has been performed correctly based on the amount of displacement of the insertion means and determines whether to terminate or cancel the insertion.

(Function) When the coil mounting device is configured as described above, the resistance between the lead and the insertion hole during insertion can be reduced by applying vibration to the board or the insertion means. Utilizing this fact, the pressing force can be applied within the elastic region of the coil lead. Therefore, it is possible to mount a coil without causing plastic deformation of the coil leads. Based on the amount of displacement within a predetermined time obtained by the detection means for detecting the amount of displacement of the insertion means, it is determined whether the insertion is performed correctly. Based on this judgment result, it is determined whether to terminate or cancel the insertion, and the coil is reliably mounted on the board.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration diagram of the coil mounting apparatus of this embodiment. A coil insertion section (13) is provided opposite to the substrate (1) placed on the substrate placement section (9). This coil insertion part (13) has a mounting head (2) that holds the axis of the coil (1) parallel to the substrate (1) and the leads downward. Further, an ejector (3) provided with a suction chuck for mounting is loosely fitted into the mounting head (2). Furthermore, a pie break (4) is connected to the installed nozzle (2). An ejector cylinder (5) is connected to this ejector (3). And this installed nozzle (
2) and ejector cylinder (5) are connected to the pie break (4).
) is vibratably attached to the positioning arm (6). This positioning arm (6>) is controlled by a control unit (7).The mounting head (2) is also equipped with a displacement sensor (10) that detects the amount of displacement of the ejector (3).
is arranged and connected to the judgment circuit (11) so as to be able to output detection data of the displacement sensor (10). This judgment circuit (11) is connected so as to be able to output the result to the control section (7).

Next, the present invention will be explained in detail. The substrate (8) is placed on the substrate platform (9), and the mounting head (2) with the coil (1) mounted by the suction chuck of the ejector (3) is moved to a predetermined mounting position by the positioning arm (6). let Thereafter, the ejector cylinder (5) is activated, the ejector (3) pushes out the coil (1) from the mounting head (2), and the lead (12) of the coil (1) is inserted into the predetermined insertion hole (14a) of the substrate (8). ) (14b). At this time, the pressing force of the ejector cylinder (5) is weaker than the rigidity of the lead (12) of the coil (1). With such a pressing force, the coil (1) is inserted into the insertion hole (14a) (1
4b) or the inner surface of the insertion hole (14a) (14b), insertion is impossible due to the resistance at that time. Here, the pie break (
By activating 4), dither vibration (vibration with a constant amplitude and frequency) is applied to the mounting head (2), which makes it possible to insert the coil (1) with a small pressing force as described above. Become. With such a small pressing force, insert the coil (1) and glue (12) into the insertion hole (14a) (14
b), even if the coil (1) is defective as shown in Fig. 2 and the lead (12> is not inserted into the insertion hole (14a) (14b)), the lead (12) will not be inserted as shown in Fig. 3.
12) does not cause the problem of plastic deformation. Utilizing this, the determination circuit (11) compares the displacement amount detected by the displacement sensor (10) with the predetermined insertion amount after a predetermined time has elapsed since the insertion was started. At this time, if the displacement detected by the displacement sensor (10) is greater than or equal to the predetermined insertion amount, it means that the ejector (3) has been correctly installed, so the suction of the suction chuck provided on the ejector (3) is stopped, and the installation head (2) ) to complete the mounting work. Also, compare the displacement amount detected by the displacement sensor (lO) with the predetermined insertion amount, and if the displacement amount does not reach the predetermined insertion amount, the coil (1) is defective and the lead (12) is not inserted. Since it is not correctly inserted into the hole, a signal to stop the insertion is output.

According to this signal, the insertion is stopped and the positioning arm (6
) moves the mounting head (2) to a predetermined defective coil mounting tray (not shown). Thereafter, the coil (1) is removed from the mounting head (2), a new coil (1°) is mounted, and the mounting of the coil is restarted.

Although the mounting head was vibrated in this embodiment, the present invention would not be affected equally even if the substrate side was vibrated relatively or both of them were vibrated.

[Effects of the Invention] By using the coil mounting apparatus of the present invention as described above, it is possible to eliminate the problems caused by the conventional apparatus forcibly mounting defective coils. Additionally, coil defects can be detected during coil mounting based on the relationship between the amount of coil insertion and the insertion time.
We have realized a coil mounting device that does not require an inspection process after mounting.

Furthermore, by weakening the pressing force, defective coils can be separated from good coils without damaging the leads. Therefore, it has become possible to reuse a defective coil by simply correcting its shape.

[Brief explanation of the drawing]

FIG. 1 is a partially cross-sectional configuration diagram showing the configuration of an apparatus according to an embodiment of the present invention, FIG. 2 is a state diagram showing the state of the leads and insertion holes when mounting the coil on the board, and FIG. The figure is a state diagram of a defective product when a coil is mounted using a conventional device. DESCRIPTION OF SYMBOLS 1... Coil, 2... Mounting head, 3... Ejector, 4... Pie break, 5... Ejector cylinder, 6... Positioning arm, 7... Control unit, 8...・Substrate, 9...Substrate mounting part,

Claims (1)

[Claims] In a coil mounting device that mounts a wound coil at a predetermined position on a board, the lead of the coil, which is provided facing the board and is held removably, is inserted into the insertion hole of the board by the pressing force within the elastic region of the coil lead. an insertion means for inserting, a detection means for detecting the amount of displacement of the insertion means, a vibration means for vibrating at least one of the coil insertion means or the substrate in the plane direction of the substrate, and a predetermined amount detected by the detection means. 1. A coil mounting apparatus comprising: an insertion control unit that determines whether insertion is being performed correctly based on the amount of displacement of the insertion means within a given period of time, and determines whether or not the insertion is to be terminated or stopped based on the result.