JPH085593Y2 - Electronic component insertion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a device for inserting an electronic component, particularly an axial lead type electronic component, into a circuit board.

(B) Conventional technology Regarding a device for inserting an axial lead type (coaxial type) electronic component into a circuit board, Japanese Patent Publication No. 49-30190 and 56,
A number of proposals have been made and put to practical use as disclosed in Japanese Patent Publication No. -10798 and Japanese Patent Publication No. 56-51496. Axial lead type component tapes are attached to the component tapes used in these devices with their leads straightened. The lead is separated from the tape just before insertion and bent into a predetermined shape. The movement of parts from the cutting step to the insertion step is often performed by a means of pushing the bent lead into the guide groove to hold or guide it.

(C) Problems to be solved by the device The above device works properly when the parts are correctly arranged on the tape at a predetermined pitch, but when the arrangement is severely disturbed, the bent lead is It may be pushed into the guide groove, or even cut or bent itself may be out of order. And the arrangement of parts is often disturbed by bending and stacking of tape and other factors mainly during packing and transportation.
An object of the present invention is to provide a device which can surely insert components even from a tape having a disordered arrangement of components.

(D) Means for Solving the Problems In the electronic component insertion device of the present invention, the component body is offset to the component lead implantation position of the tape in the tape feeding direction and then fed to the lead cutting / bending process. And

(E) Action Pitch feed of parts is performed by hooking the lead near the tape. If the parts main body is offset with respect to the lead implantation position in the feed direction, the parts will arrive at the cutting / bending part in a uniform arrangement posture, and the expected operation up to insertion will be performed without any mistake. To be done.

(F) Embodiment A fourth embodiment of the schematic configuration of an electronic component insertion device to which the present invention is applied
Shown in the figure. (1) is an axial lead type electronic component taped to a tape (2). The electronic component (1) pitch-fed by the feeding mechanism is separated from the tape (2) by the cutting and bending mechanism (3), and the leads (4) are bent and formed. The contact chuck (5) receives the component (1), chucks the lead (4) and carries it to the relay point (6). At the relay point (6), the robot arm (7) extracts the component (1) from the contact chuck (5) by the insertion chuck (8). The robot arm (7) moves the insertion chuck (8) to insert the component (1) into the circuit board (9). This robot arm (7) is of the Cartesian coordinate type, and the first section (10) moves in the direction perpendicular to the paper surface,
The second section (11) moves to the left and right in the figure with respect to the first section (10). The second section (11) supports the insertion chuck (8) so as to be vertically movable. (12) and (12) are guide bars that support the first joint (10), and (13) is a feed screw that moves the first joint (10).

Next, the structure of each part will be described in detail. First, Fig. 5 shows parts (1)
The feeding mechanism (14) is shown. This is basically the same configuration as that disclosed in Japanese Patent Publication No. 55-49792 or Japanese Patent Publication No. 56-10800. Ie a pair of claw wheels (15)
(15) are arranged on the same axis with a space therebetween, and are engaged with the claws of the ratchet wheels (15) (15) near the ends of the leads (4) of the part (1) taped. A ratchet wheel (16) is connected to the ratchet wheel (15), and a ratchet (18) of a ratchet lever (17) is connected to the ratchet wheel (16).
Engage. When the roller (19) at the tip of the lever (17) is pressed by a tappet (not shown), the lever (17) supported coaxially with the ratchet wheel (16) rotates, and the ratchet wheel (16) is also pressed by the ratchet (18). It is rotated by the same angle. When the tappet is released, the lever (17) returns to its original position by the action of a spring (not shown), but the ratchet wheel (16)
Is prevented from reversing by the detent claw (20) and stays at that angle. By repeatedly pressing the roller (19), the ratchet wheel (16) is rotated in steps, and the ratchet wheel (15) connected to the ratchet wheel (16) feeds the taping body of the component (1) by a constant pitch. The ratchet (18) and the pawl (20) are biased by a spring in a direction in which they closely contact the ratchet wheel (16), but this spring is not shown. Further, the ratchet wheels (15) (15) are usually fixed to the same shaft, but in the present embodiment, the cutting and bending mechanism (3) is arranged between the ratchet wheels (15) (15) as described below, Both claw wheels are independently
1) Support in (21). And the nail wheel (15) (1
By fixing the gears (22) and (22) to the gears 5) and engaging the gears (24) and (24) fixed to the common shaft (23) with the gears (22) and (22), respectively, the ratchet wheel (15) ( 15) to rotate synchronously.

Now, the electronic component (1) of the embodiment is a resistor, and the flattened squeezing portion (25) is provided in the middle of the lead (4). This becomes an obstacle when the lead (4) is inserted into the hole (26) of the circuit board as shown in FIG. 16, and the main body of the component (1) is separated from the board (9) and held in a state of floating in the air. . This is because the heat generated by the component (1) is efficiently dissipated and the thermal influence on the substrate (9) is reduced.

6 to 9 show the structure of the cutting and folding mechanism (3) for folding and forming the lead (4) of the component (1) into the shape shown in FIG. (27) is a base that supports the feed mechanism (14) and the cutting and bending mechanism (3). Attach the fixed blades (28) (28) to the base (27). The fixed blades (28) (28) are the parts (1) sent to the inside of the ratchet wheel (15) (15).
Are arranged so as to receive the leads (4) (4). An elevator (29) is arranged between the fixed blades (28) (28). As shown in Fig. 9, the elevator (29) has rollers (3
It is mounted on the cam (31) via the (0) and is moved up and down by sliding the cam (31) in the horizontal direction by the air cylinder (32). (33) is a spring that pulls the elevator (29) downward. This elevator (29) supports the root of the lead (4) at its upper end. Further, there are meat stealing portions (34) on both side surfaces facing the fixed blades (28, 28). (35) is an elevating ram arranged above the elevator (29), and descends along the side surfaces of the movable blades (36) (36) and the elevator (29) paired with the fixed blades (28) (28). Bending tool (37) (37)
And are fixed. A pusher (38) for sandwiching the lead (4) with the elevator (29) is arranged between the bending tools (37) (37). The pusher (38) is attached to the ram (35) by a shaft (39) so that it can be moved up and down, and the spring (40).
Is urged downward by.

10 to 12 show the structure of the contact chuck (5). The main part thereof is a slider (42) supported by a rail (41) extending from the base (27). The rail (41) has a bottom wall and both side walls, and the slider (42) is provided therein.
Fits in. Rollers (4
3) (43) is pivotally supported, and the rollers (43) (43) engage with the long holes (44) (44) in the side wall of the rail (41) to support the weight of the slider (42). The slider (42) is connected to the rod (46) of the air cylinder (45) shown in FIG. 9 and moves between the position approaching the elevator (29) and the relay point (6) at the end of the rail (41). Make a round trip. Fixed jaws (48) (48) are provided on the upper surface of the slider (42), and movable jaws (49) (49) are superposed thereon. Fixed jaw (48) (4
8) extends in the direction of the elevator (29) from the slider (42) and is perpendicular to the mutually facing surfaces.
0) has. The groove (50) does not go all the way down.
The movable jaws (49) (49) are pivotally supported by the shafts (51) (51) and engage with the fixed jaws (48) (48) like scissors. The movable jaws (49) (49) are urged in the direction of passing the fixed jaws (48) (48) by the spring (52) stretched between them, but by the stoppers (53) (53).
Stop at the position where you can see the groove (50) (50) partly. The inlet of the groove (50) and the shoulder of the movable jaw (49) are chamfered to smoothly lead in the leads.

Next is the insertion chuck (8), which has a pair of opening and closing fingers (54) (5) as shown in FIG.
4) and a U-shaped pusher (55). The tips of the fingers (54) (54) are bent inwardly in an L shape, and a groove (56) for receiving the lead (4) is formed in this portion.
The groove (56) is sized so that only the undeformed portion of the lead (4) passes through, and the crushed portion (25) does not come out downward. Also, attach the lead (4) to the tip of the pusher (55).
The engaging groove (57) is formed. The chuck (8) for insertion can be provided with a rotating function about a vertical axis so that the inserting direction can be changed.

1 to 3 show the configuration of the straightening mechanism (58), which has a function of biasing the component body with respect to the lead implantation position in the feeding direction. The straightening mechanism (58) is placed in front of the cutting and folding mechanism (3). (59) and (59) are anvils that support the portion of the lead (4) adjacent to the tape (2) from below. A beam (60) is supported by the base (27) and vertically supports the air cylinder (61). A straightening body (63) having a sharp lower end is fixed to the rod (62) of the air cylinder (61). (64) is a pusher having legs (65) (65) facing the anvils (59) (59). Pusher (6
4) is the guide rod (66) (6
It goes up and down along 6) and the middle part is connected to the correction body (63). The retaining rings (67) (68) are fitted to the correction body (63) at intervals in the vertical direction, and the pusher (64) can move relative to the correction body (63) between them. (6
9) is a compression coil spring inserted between the retaining ring (67) and the pusher (64). In relation to the correction mechanism (58), the pusher (38) of the cutting and bending mechanism (3) pushes the part (1) in the direction opposite to the feed direction, and the position control body (7) is pushed back.
Wear 0).

The operation of the above device is as follows. The tape (2) is pitch-fed according to the insertion tact, and in synchronization with this, the air cylinder (61) operates to push the rod (62) downward. Then, first, the legs (65) of the pusher (64)
The lead (4) is clamped between the anvil (59) and the anvil (59) and is fixed so that it does not move. Further springs (69)
The straightening body (63) descends while compressing, and enters behind the component (1) as shown in FIG. Due to the wedge action of the tip of the correction body (63), the component (1) is pushed forward as shown in FIG. 1, and even after the correction body (63) has come out, the lead (4) bends and moves slightly forward than usual. It stays in the deviated position. In this way, since the parts (1) are pushed one by one from the back side, all the parts (1) which are disturbed in the front or rear direction in the tape feeding direction are corrected in the front position, and thereafter, the tape ( The positional relationship between 2) and the component (1) is almost constant. The tape (2) arrives at the cutting and folding mechanism (3) in this state. The connecting chuck (5) is pulled to the cutting and bending mechanism (3) by the air cylinder (45) to move the fixed jaw (48) and the movable jaw (49) to the meat steal portion (34) beside the elevator (29). ) I am waiting in the position where I entered. The first one of the parts (1) sent by the sending mechanism (14) is located right above the elevator (29) (see FIGS. 6 and 9). Here the ram (35) descends. Then, the position regulation body (70) hits the side surface of the component (1). The part (1), which had been offset to the front, is pushed back and set in place. Next, the pusher (38) presses the root of the lead (4) with the elevator (29), the movable blade (36) shears the lead (4) with the fixed blade (28), and the tape (2) Disconnect from.
Further, the bending tool (37) moves the lead (4) to the elevator (29).
Fold it at a right angle along the side of. The state at this time is No. 7
Shown in the figure. Here, the air cylinder (32) pulls the cam (31) and lowers the elevator (29). The elastic force of the spring (40) pushes down the reed (4) and also lowers the pusher (38), which causes the reed (4) to move to the movable jaw (49).
Push away and insert into the groove (50) of the fixed jaw (48),
The state shown in FIG. 8 is obtained. Then, the ram (35) rises and the air cylinder (45) pushes out the contact chuck (5). The lead (4) of the component (1) is sandwiched between the fixed jaw (48) and the movable jaw (49) and is carried to the relay point (6). After that, the elevator (29) is raised by the cam (31), and the feeding mechanism (14) feeds the taping body of the component (1) one pitch. Now, the insertion chuck (8) approaches the component (1) that has arrived at the relay point (6). The insertion chuck (8) covers the part (1) from above with the fingers (54) (54) open, and when the lead (4) enters the groove (57) of the pusher (55), the finger (54 )
Close (54). Then, as shown in FIG. 14, the movable jaw (49) is pushed away, and the groove (56) engages with the portion immediately below the crushing portion (25). Chuck as it is (8)
When pulled up, the crushing portion (25) is caught in the groove (56), and the component (1) is removed from the connecting chuck (5) as shown in FIG. Move the insertion chuck (8) over the circuit board (9) and slightly insert the tips of the leads (4) into the holes (26), and then the fingers (54) (5).
4) is opened and the pusher (55) pushes it further to complete the insertion of the component (1). The moving lead (4) has fingers (5)
Since it is supported by both 4) and the pusher (55), there is no wobbling or deviation in direction.

(G) Effect of the device In this device, since the positional relationship between the tape and the tape of each part is offset in the feeding direction and then sent to the cutting / bending process, the parts are always oriented in a uniform orientation. Arrive at. Then, in the cutting / bending process, by controlling the position of the component in the direction opposite to the one-sided direction, the component can be corrected to the intended posture, and reliable cutting / bending can be performed. Therefore, stable component insertion can be performed even if the initial component arrangement is disturbed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is an explanatory view of a mechanism for correcting the relative position between a component and a tape, and FIGS. 2 and 3 are front views of a correction mechanism showing different operating states, FIG. 4 is a conceptual diagram of a mechanism for cutting / bending a component lead to inserting it into a circuit board, FIG. 5 is an exploded perspective view of a feeding mechanism, and FIGS. 6, 7 and 8 are parts of a cutting / bending mechanism. Fig. 9 is a cross-sectional view showing different operating states, Fig. 9 is a cross-sectional view of the same section of the cutting and bending mechanism and the cross-sectional direction is changed, Fig. 10 is a top view of the connecting chuck, and Fig. 11 is Similarly, a cross-sectional view, FIG. 12 is a cross-sectional view in a direction perpendicular to FIG. 11, and FIG. 13 is a partial perspective view of a state in which a component is held by an insertion chuck, 14, 15, 16
The drawing is a cross-sectional view showing the operation from the receipt of the component to the insertion by the chuck for insertion. (1) …… Axial lead type electronic component, (2) …… Tape, (4) …… Lead, (9) …… Circuit board, (3)
...... Cutting and folding mechanism, (58) …… Correcting mechanism.

Claims (1)

[Scope of utility model registration request] 1. An axial lead type electronic component, in which the lead is separated from a tape, bent and molded, and then inserted into a circuit board, wherein the component body is placed in the tape feed direction with respect to the component lead implantation position of the tape. An electronic component insertion device characterized in that it is configured to be sent to a lead cutting / bending process after being brought together.