JPS6325996A - Method and apparatus forinserting coil automatically - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for automatically inserting a processed and formed coil into an insertion hole of a printed circuit board.

[Prior Art] Conventionally, a method for inserting a processed and formed coil into an insertion hole of a printed circuit board has been carried out using steps as shown in FIG. That is, a reel-wound polyurethane wire (1)
Pull out the polyurethane wire (1) from the supply part (2) of
This is processed and formed into an air-core coil (4) of a predetermined shape using a coil winding machine (3) (3), and transferred to an individual solder bath (5). Lead wire (6) While removing the polyurethane film on (6), solder (
7) is attached. Next, insert the lead wires (6) (6) of this air-core coil (4) into the insertion holes (
9) Insert (9) by hand, and further insert parts such as a capacitor (10) and a transistor into predetermined locations on the printed circuit board (8) by hand or machine.

Next, this printed circuit board (8) is placed in an automatic board soldering tank (1
1), air core coil (4), capacitor (10)
.

Lead wires for transistors, etc. (6) (6), (12) (
12) Solder the... to the circuit pattern of the printed circuit board (8) all at once to secure the connection.

[Problems to be Solved by the Invention] As mentioned above, in the conventional method of inserting a processed and formed coil into the insertion hole of a printed circuit board, the lead wires (6) (6) of the air-core coil (4) are printed. Since the step of inserting into the insertion holes (9) (9) of the board (8) was performed manually, this insertion operation took too much time.

There was a problem in that the process time for the entire assembly line work could not be shortened.

The present invention was made in view of the above-mentioned problems.

The purpose is to automatically insert and fix the lead wire of the coil processed and formed by the winding machine into the insertion hole of the printed circuit board, thereby shortening the coil insertion time and thereby reducing the overall process time of the assembly line. It is something.

[Means for Solving the Problems] The automatic coil insertion method according to the present invention automatically transfers the processed and formed coil while holding it, and during the transfer, removes the film of the lead wire of the coil, At the end of the transfer, the lead wire of the coil is inserted into an insertion hole of a printed circuit board and fixed.

The automatic coil insertion device according to the present invention includes a coil transfer machine that holds and transfers a processed and formed coil and inserts the lead wire of the coil into an insertion hole of a printed circuit board, and a coil transfer machine that transfers the processed coil while holding it and inserts the lead wire of the coil into an insertion hole of a printed circuit board. A solder bath is installed in the middle of the transfer path and removes the film of the lead wire of the coil and applies solder thereto, and a fixing means fixes the coil inserted into the printed circuit board to the printed circuit board. It is characterized by this.

[Operation The coil transfer machine holds and transfers a coil that has been processed and formed into a predetermined shape using an automatic coil winding machine or the like, and inserts the lead wire of the coil into an insertion hole of a printed circuit board. A solder bath temporarily installed in the middle of the coil transfer path removes the coating of the coil lead wire and attaches the solder. The coil inserted into the insertion hole of the printed circuit board by the coil transfer device is fixed to the printed circuit board by the fixing means.

[Embodiment] FIG. 1 shows an embodiment of a device for carrying out the automatic coil insertion method according to the present invention, and in this figure, (20)
The inner diameter is, for example, 3 to 3.51φ and the number of turns is, for example, 1.5 to 3.51φ.
This is an automatic coil winding machine that automatically processes and forms a 23.5T air-core coil (4) and sequentially sends it out. The air-core coil (4) sent out from this automatic coil winding machine (20) is
, 2nd. Third coil transfer machine (30) (40) (50)
The insertion hole (9) of the printed circuit board (8)-(8) which was transferred by and then placed on the XY cable (60)
(9) is inserted. Prior to this insertion, between the insertion holes (9)-(9) of the printed circuit boards (8)-(8),
Adhesives such as ultraviolet curing resins and thermosetting resins (21) - (
21) is automatically applied. A predetermined number of air-core coils (4
The printed circuit board (8) into which ) to (4) have been inserted is pushed out onto a belt conveyor (70), and then conveyed by this belt conveyor (70) into a curing furnace (80) where it is heated for a certain period of time (e.g. The adhesives (21) to (21) are cured by ultraviolet irradiation or heating (for 30 seconds), and the lower sides of the air-core coils (4) to (4) are fixed onto the printed circuit board (8). The coil automatic winding machine (20), the first
．． Second and third coil transfer machines (30) (40) (50
), X Y cable (60), belt conveyor (7
0) and the curing furnace (80) are controlled by a control circuit (C
It is configured such that predetermined control is performed by a PU (including a central processing unit).

The first coil transfer device (30) includes a turntable (32) that rotates together with a rotating shaft (31), and a predetermined pitch (for example, 60°) on the upper surface of the turntable (32) along the rotational circumferential direction. Bases (33) arranged at intervals -
(33), the abutments (34) to (34) planted on the bases (33) to (33), and the abutments (34) to (3).
Arms (35) - (
35) and retainers (36) to (36) provided at the tips of the arms (35) to (35). The cages (36)-(36) are, as shown in FIG.
A housing (37) with an open top and one side, and a housing (37) with an open top and one side.
7) a holding shaft (38) protruding inside, and an air-core coil (4) fed from the automatic coil winding machine (20) between the holding shaft (38) and the inner wall of the housing (37) ) are stored and retained. (15) The first coil transfer machine (
This individual solder tank (5) is a suction-type individual solder tank installed in the middle of the transfer path of the air-core coil (4) according to 30).
1 is sucked up from a solder bath (not shown), and as shown in FIG.
6) The top surface is the lead wire (6) of the air core coil (4) (6)
It is configured so that it comes to a predetermined position.

The second coil transfer device (40) includes a rod (42) that rotates by 180 degrees in the direction of the arrow by one rotation axis (41);
Heads (43) fixed at both ends of this rod (42)
(43), and a lead chuck (44) (44) provided on the head (43) (43), and this lead chuck (44) (44) is connected to the air-core coil (44).
The lead wires (6) (6) (4) are formed to be able to be held and removed.

The third coil transfer device (50) includes a turntable (52) that rotates together with the rotation axis (51), and a predetermined pitch (for example, 60°) on the lower surface of the turntable (52) along the rotational circumferential direction. The bases (53) to (53) are rotatably arranged at
) to (53), chucks (54) (53) are provided on the lower surfaces thereof so that one side can slide in one direction, as shown in FIG.
4), and coil chucks (55a) (55b) detachably held by the chucks (54) (54), and the opposing surfaces of the coil chucks (55a) (55b) have the markings shown in FIG. As shown in (a) and (b), coil holding grooves (56a) and (56b) are formed to engage and hold the line portions on both sides of the air-core coil (4).

Next, the operation of the above embodiment will be explained with reference to the process diagram of FIG. 6.

(a) The polyurethane wire (1) drawn out from the supply section (2) of the polyurethane wire (1) wound on a reel is sequentially rolled into an air-core coil (
4) and sent into the holder (36) of the first coil transfer machine (30) as shown in FIGS. 1 and 2.

(b) Next, the turntable (32) of the first coil transfer machine (30) is rotated 60° in the direction of the arrow to rotate the air-core coil (
4), the arm (35) rotates outward by 90 degrees, and the open side of the holder (36) faces downward. When the turntable (32) further rotates 60 degrees, the retainer (3
6) reaches the upper part of the individual solder tank (15), and this individual solder tank (15) sucks up the solder (16) and moves upward,
As shown in Figure 3, the lead wire (6) of the air-core coil (4)
) (6) is dipped into the solder (16). As a result, the polyurethane film on the lead wire (6) is removed and the solder is attached.

(c) Next, the turntable (32) of the first coil transfer machine (30) rotates 60 degrees to transfer the air-core coil (4), and then the second coil transfer machine (40) glue-dochasok (44) ( The lead wires (6) (6) of the air-core coil (4) are held by the air-core coil (4), and the air-core coil (4) is held by the retainer (
36) To be extracted from within.

(d) Next, the lead wires (6) (6) of the air core coil (4)
) is cut off by a cutter (not shown), and 180' of the rod (42) of the second coil transfer machine (40) is removed.
The rotation of the air-core coil (4) moves the air-core coil (4) to the third coil transfer machine (
50) Transfer to the side. Note that if the lead wires (6) (6) of the air-core coil (4) are adjusted to a predetermined length before the automatic coil winding machine (20) or the like, cutting with a cutter may be omitted.

(E) The third coil transfer machine (50) is connected to its chuck (5).
4) By adjusting and sliding (54) in the direction of the arrow,
Coil chuck (55a)
) (5sb), the air-core coil (4) is transferred by rotating the turntable (52) by 60 degrees in the direction of the arrow while being engaged and held in the coil engaging grooves (56a) and (56b) of the coils (5sb). The base (53) of the third coil transfer machine (50) - (
53) is rotated by a predetermined angle with respect to the turntable (52) at a position rotated by 60° or 1206 degrees from the position where both side wire portions of the air-core coil (4) are received and engaged and held.

The Y direction is adjusted.

(to) The air-core coil (
4) is transferred to the upper part of the XY table (60), and then the XY table (60) is moved a predetermined distance in the X and Y directions to perform positioning. As shown in FIG. ) comes to a position where the lead wires (6) (6) match the insertion holes (9) (9) of the printed circuit board (8).

(G) Then, by moving the base (53) and/or the XY table (60) in the vertical direction, the air-core coil (4)
When the lead W (6) (6) is inserted into the insertion hole (9) (9) of the printed circuit board (8), the chuck (54)
(54) opens and leaves the air-core coil (4). Then, the adhesive (21) previously applied on the printed circuit board (8) connects the lower surface side of the air core coil (4) and the printed circuit board (
8) comes into contact with the top surface. Next, bend the cut part (1,
8) Bend the lead wires (6) (6) protruding from the bottom surface of the printed circuit board (8) using (18), and attach the air-core coil (4).
is fixed to the printed circuit board (8).

(h) When the predetermined number of air core coils (4) to (4) have been inserted and fixed onto the printed circuit board (8), the printed circuit board (8) is transferred from the XY table (60) onto the belt conveyor (
70) is pushed out onto the belt conveyor (70)
and transported to the curing furnace (80). This curing furnace (8
When UV irradiation or heating is performed for a predetermined time (for example, 30 seconds) at step 0), the adhesive (21) hardens and fixes the lower side of the air-core coil (4) and the upper surface of the printed circuit board (8).

(S) In the above (H), air-core coils (4) to (4)
If the scheduled number of air-core coils (4)-(4) are not inserted and fixed onto the printed circuit board (8) due to an insertion error, etc., the belt conveyor (
Before being pushed out to the printed circuit board (8), an insufficient number of lead wires protruding from the bottom surface of the printed circuit board (8) is detected, and the control circuit operates the XY table (60) to remove the printed circuit board (8).
is returned to the third coil transfer machine (50) side, and the first coil is returned from the automatic coil winding machine (20). 2nd and 3rd coil transfer machine (30)
(40) Insert the predetermined air-core coil transferred via (50) and fix it to correct insertion errors.

(6) Next, parts other than the coil, such as a capacitor (10) and a transistor, are inserted by hand or machine, and then sent to the automatic board soldering tank (11), where they are soldered together and the air-core coil (4) is inserted. Lead wires (6) (6), (12) (12) of a capacitor (10), etc. are connected and fixed to a circuit pattern of a printed circuit board (8). Note that the inductance of the air-core coil (4) is adjusted by opening and closing the upper coil wire interval.

In the above embodiment, the air-core coil is fixed to the printed circuit board by both the adhesive and the bending of the lead wire, but the present invention is not limited to this. It may be fixed.

In the above embodiment, the air-core coil has one type of inner diameter (for example, 3 types).
, 5m1llIφ), but the invention is not limited to this. For example, when inserting two types of air-core coils with different inner diameters into a printed circuit board, as shown in FIG. 30a) base (33a)
~ (33a) Two types of supports (34a) on each
(34b) and this abutment (34a) (34b)
An arm (35a) (35b) is provided on each of the arms (35a) (35b) so as to be rotatable 906 times, and a retainer (3
6a) (36b), two types of retainers (36a) (36b) are installed on the turntable (36b).
2) are arranged along the rotational circumferential direction.

In the embodiments described above, insertion of an air-core coil has been described, but the present invention is not limited to this, and can also be applied to a coil having an iron core.

[Effects of the Invention] As described above, the automatic coil insertion method according to the present invention automatically transfers the processed and formed coil while holding it, removes the film of the coil lead wire during the transfer,
By inserting and fixing the coil lead wire into the insertion hole of the printed circuit board at the end of transfer, it is possible to automate the coil insertion, and there is no need to waste the operation of inserting the coil lead wire into the insertion hole of the printed circuit board. There is no need to worry about this, making it possible to improve efficiency and save labor.

Further, the automatic coil insertion device according to the present invention includes a coil transfer machine that holds and transfers the coil and inserts the coil lead wire into the insertion hole of the printed circuit board as described above, and a coil transfer machine that is disposed in the middle of this transfer path. , consists of a solder bath for removing the film of the lead wire and applying solder, and a fixing means for fixing the coil to the printed circuit board, so it is a simple 1M configuration that automatically inserts the coil lead wire into the insertion hole of the printed circuit board. Can be inserted and fixed.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of a device for carrying out the automatic coil insertion method according to the present invention, Figs. 2 to 5 show the main parts of Fig. 1, and Fig. 2 shows an air-core coil. 3 is a perspective view of the holder of the first coil transfer machine that accommodates and holds the holder; FIG. 3 is a partially sectional front view showing a state in which the lead wire of the air-core coil is coated with solder after the film is removed by the solder bath; Fourth
The figure is a partially cross-sectional front view showing a state in which the side surface of the air-core coil is held, FIGS. 5(a) and 5(b) are partial side views of FIG. 4, and FIG. 6 is a diagram showing the operating steps of the present invention. FIG. 7 is a plan view of a portion showing another embodiment, and FIG. 8 is a process chart showing the operating steps in the conventional method. (4)...Air core coil, (5)...Solder bath, (6)
... Lead wire of air core coil (4), (8) ... Printed circuit board, (9) ... Insertion hole of printed circuit board (8),
(20)... Coil automatic winding machine, (21)... Adhesive, (30) (40) (50)... Coil transfer machine,
(60)...XY table.

Claims (4)

[Claims] (1) Automatically transfer the processed coil while holding it, remove the film of the coil lead wire during the transfer, and insert the coil lead wire into the insertion hole of the printed circuit board at the end of the transfer. An automatic coil insertion method characterized in that the coil is inserted into the coil and fixed. (2) A coil transfer machine that holds and transfers the processed and formed coil and inserts the lead wire of the coil into the insertion hole of the printed circuit board, and a temporary installation in the middle of the transfer path for the coil transferred by this coil transfer machine. A coil comprising: a solder bath for removing a film of a lead wire of the coil and applying solder; and a fixing means for fixing the coil inserted into the printed circuit board to the printed circuit board. Automatic insertion device. (3) The coil transfer machine sequentially stores, holds and transfers the processed and formed coils, and also includes a first coil transfer machine with a solder tank installed on its transfer path, and the coils transferred by this first coil transfer machine. a second coil transfer machine that receives the coil, holds the lead wire, and transfers the coil; and a second coil transfer machine that receives the coil transferred by the second coil transfer machine, holds the side of the coil, and inserts the coil lead wire into the insertion hole of the printed circuit board. Insert the third
An automatic coil insertion device according to claim 2, comprising a coil transfer device. (4) The fixing means consists of means for applying adhesive between the insertion holes of the printed circuit board, and means for fixing the lower side of the coil to the upper surface of the printed circuit board by curing the applied adhesive. An automatic coil insertion device according to claim 2 or 3.