JPS60197329A - Device for attaching electronic part - Google Patents

Abstract

PURPOSE:To make it possible to surely carry out an electronic attaching process, by locking the rotation of an auxiliary holder attached to a main holder to selectively use a plurality of absorbing heads. CONSTITUTION:When an auxiliary holder 14 comes to a certain station, a selector gear 44 is positioned above a driven gear 15 while the free end of a lever 54 enters in a lever receiver 53, and a lock pin 49 is engaged in a groove 52 to lock an auxiliary holder 14. When an absorbing head 16 is replaced with another one, an elevator 41 lowers to mesh the selector gear 44 with the driven gear 15 so that the lever 54 rotates, resulting in that the lock pin 49 comes off from the groove 52, thereby the auxiliary holder 14 is made rotatable. When the elevator 41 is raised after the angle of the auxiliary holder 14 is changed, the lever 54 is returned to its original position so that the lock pin 49 is engaged in the groove 52 to lock the auxiliary holder 14.

Description

Detailed Description of the Invention (a) The field of industrial application is to install electronic circuits by attaching components (so-called chip components) to a board. Regarding the constituent devices.

←) Prior Art Small leadless electronic components are increasingly being used to construct electronic circuits. Recently, there are many types of parts, and in addition to flat (square) and cylindrical (round) shapes, flat plate parts have lengths of 2m to over 7m and widths of 1m to 4w. It shows a rich variety of things such as strength. The present applicant proposed a component mounting device capable of handling many types of glue-dressed electronic components in one device in Patent Application No. 224402 and No. 224403 of 1981. In these devices, multiple sub-holders are attached to a main holder that performs index rotation, and by changing the attachment angle of the sub-holders to the main holder, multiple types of suction heads held by the sub-holders can be selectively used. It looks like this. By the way, regarding maintaining the angle of the sub-holder, since the ball spring mechanism is used to prevent the sub-holder from wobbling, it is not sufficient to hold the sub-holder firmly, and the angle may shift even with some external force. The problem was that it was easy.

(C) Purpose of the Invention The present invention provides a method for attaching a plurality of sub-holders to a main holder that performs index rotation, and changing the attachment angle of the sub-holders to the main holder, so that multiple types of suction can be held on the sub-holder. To provide an electronic component mounting device in which a sub-holder does not rotate except when replacing a suction head in an electronic component mounting device which selectively uses a suction head, thereby ensuring the performance of component mounting work.

b) The structure of the invention shall be rotated. A locking means is provided between the main holder and the auxiliary holder to prevent rotation of the auxiliary holder, and the locking means is unlocked only when the selector gear and the driven gear are engaged.

(e) In the embodiment diagram, (1) is a circular main holder that performs index rotation around a vertical axis. As seen in FIG. 2, the main holder (1) consists of an upper rotating body (2) and a lower rotating body (3), both of which are fixed to a vertical index shaft 14>. Index shaft 14)
stands up from an indexing device (not shown) and connects to the main holder (
The bearing part (6) of the fixed deck (5) rests on the
) can support the upper end. The inside of the index shaft 14) is an intake path (7) that communicates with a vacuum source (not shown). Now, the main holder (1) rotates in steps of 45 degrees, and there are eight stations (I) around it.
- (■) are arranged, and eight arms 18) are made to protrude radially from the lower rotating body (3) in accordance with this. The arm 18) is supported by a slider (9) mounted perpendicularly to the surface of the lower rotating body (3), and is movable in the vertical direction. The slider (9) is pulled up by a spring 110 stretched between it and the upper rotating body (2) until it hits a stopper bolt 111 (Fig. 8) screwed into the upper rotating body (2). 9) is the roller U that protrudes outward.
This roller @ is subjected to the pressing action of a tappet (13) at the suction station (I).Similar tappets are arranged at the mounting station M and other necessary stations, and all of them are moved up and down by cam action.

The arm (8) supports a sub-holder (141) at its tip.The sub-holder (141 is drum-shaped, and the arm (8)
It fits into the tip of the arm 18 from the outside and is rotatable around the axis of the arm 18), that is, around the horizontal axis. A driven gear (to) is fixed to the outward end surface of the sub-holder (141). Also, around the sub-holder (14), there are four types of suction heads fl with different nozzle thicknesses. ! (17
1Q and ll protrude radially at 90° intervals. Each suction head can be retracted inward, and the spring (a)
is pushed out to the protruding position. The center of the arm (8) is an intake path Qυ. This intake passage t2υ communicates only with the one directly below the adsorption α7) α81 (1B) through the communication hole. (2) is the intake passage (2).
Close the end of the 1. with the collar of the gl holder ilA'l. You will need one yakusa.

The upper rotating body (2) supports the valve (to). valve(
) is thrown in the same number as arm 18), and the intake path Qυ
Connect with a hose (c). The valve (to) is connected to the intake passage 171 by a hose (a), and controls the suction of the intake passage (2) from ON to OFF. The opening/closing operation of the valve is performed by a lever-type actuator (5) with a roller at the tip.
The valve is open when the button is pressed down, and the valve is closed when it is not pressed down. The actuator (2) is controlled by a cam 4 that is moved up and down by an air cylinder (2) at station (I), and by a cam blade that is moved up and down by an air cylinder (2) at stations (■ and (B)), n) ([([) Bearing 5 in the hood
This is done according to the cam country fixed in (6). The cam 61 also serves as a support member for the air cylinder head, and the cam 61 forms a plane that is substantially continuous with the cam 62 when lowered. Each valve (to) is connected to the arm (8) to which it belongs.
), so cam (2) 0υ
is also located at a position offset from the station to which it belongs.

A carrier tape for supplying parts is placed at station (I). Tape strips are made by dropping flat hexahedral parts (b) one by one into holes punched out at regular intervals in a cardboard base, and sealing both sides with plastic film. ) is peeled off just before the suction position. On the other hand, station (V)K is the substrate (
2) is placed on the x-Y table C force, and a parts collection box is placed at ◇ to the station. (The 3rd place is a device for determining the attitude of parts placed at station ①. This is composed of a photocoupler, and is placed at a height such that the optical path crosses directly below the parts that have been successfully picked up.

At the station (■) or (■), a suction head selection device (4[) as shown in FIG. 4.5 is arranged.

The main component of this device 143 is an elevator (41) supported by a stationary deck C5). The elevator l is attached to a slider (43) that slides in the vertical direction, and is given lifting and lowering motion by a lever (43) that transmits the movement of a cam (not shown). The holder (1) is pivoted horizontally so as to face the center of rotation.The selector gear (44
) is connected to the electric motor (c) supported by the elevator via a bevel gear 'd 147), and the elevator-1
When B descends, it engages with the driven gear (15J) of the sub holder 141, transmitting the rotation of the electric motor (451) to the driven gear (481 is a stopper that determines the lower limit of the descent of the elevator).

(D A lock pin (49) is attached to the upper surface of the arm (8).

The four-hole pin T49) is attached to the holder (5) fixed to the arm (8).
0) so as to be able to slide parallel to the axis of the arm (8), and is biased by a spring ←0 in the direction of the sub-holder 14). On the end surface of the sub holder 141, there is a groove ring that receives the tip of the lock pin +44m, and the suction head 116
) 090 Width 19 There are 4 pieces in total, 1 piece each behind 19. A U-shaped lever receiver is fixed to the rear end of the lock pin.

The lever receiver ←3) receives one end of a bell crank-shaped lever housed in the immovable deck 15). The other end of the lever (to) is the elevator (connecting rod to 1B←
So they are connected.

Next, the effect will be explained. Figure 8 shows station (I)
B) (The behavior of the suction head at Vρ is shown. The sub holder 1141 that has arrived at station (I) stops with the suction head 1]υ facing downward as shown in Fig. 2. At this time, the cam prisoner Still in the raised position, suction head f16)
does not generate suction force. At this point, as shown in FIG. 6, the taper (tapen) fil descends to push down the slider (9) and press the suction head (16) against the component (b). At this time, the cam prisoner also descends, the valve (goods) becomes a barrier, and the head (lω) sucks up the parts (goods). The sub holder I that sucked up the parts (b)
rises with the return of tappet (13) and station (
It is carried from I) to (■), (2), and ■. During the movement, the actuator of the valve continues to be pushed by the cam (321), and the suction of the part (b) is not interrupted.
(b) Inspect the posture. If the part is attracted in a normal position as shown in FIG. 8, the part (support) will not block the light beam of the photocoupler, so it is determined that there is no problem. The sub holder (141 is the station (
Arrive at (b). When the cam G1) first arrives, it is in the lowered position, and when the part C34) is pressed against the adhesive, the cam 6υ rises, closing the valve 124) and releasing the sucker. be. In addition, when the component (B) is attracted in an abnormal posture, the sub holder 141 does not descend at the station (V), the cam c111 also remains descended, and the sub holder +141 holds the component (B). Move to Mama Station (■). Then, as the cam 6υ rises, the sub holder α41 moves to the parts collection box (38
The part (b) is dropped at station 1 and moved to the next station.

Now, the suction head selection device installed at the station (■) or (■) performs the next previous operation. That is, when the sub holder (14I) arrives at the station, the selector gear (44) is above the driven gear (company) as shown in Figure 4, and the tip of the lever (b) is in the lever holder (2). As shown in Fig. 6, the lock bottle is engaged with the groove θ turret, and the sub holder (141) is firmly fixed. When it becomes necessary to change the elevator (4D descends and the selector gear 44) to the driven gear (as shown in Fig. 5),
15). As the elevator 1411 descends, the lever (b) also rotates, locking pin f4g) with a spring ←
1) Slide against. As a result, the lock pin is pulled out from the groove l1lI, and the sub holder Q41 becomes rotatable. In this state, drive the electric motor #J machine (49) and rotate the angle side holder (14) as much as necessary. Holder (14)
When the elevator 141) is raised after completing the angle change, the lever 04) returns to its old position and the lock pin t49
) engages with the groove (b) again to lock the sub-holder f141.

(F) Effects of the Invention In the present invention, the sub-holder equipped with multiple types of suction heads is always locked to the main holder, and is unlocked only when the U-attached head is selected. Even if the holder is moved violently, its mounting angle will not change, making it possible to perform the work reliably.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, in which FIG. 1 is a top view of the main holder, FIGS. 2 and 6 are partial vertical sectional views showing different operating states in station (I), and FIGS. The figure is a partial side view showing the different operating tables at other stations, Figures 6 and 7 are partial top views showing the operation of the lock pin, and Figure 8 is an operation explanatory diagram showing the behavior at each station in parallel. It is. +11...Main holder, (14!...Sub-holder,
116+(171(18! Qil! ・';l1lt,
Mounting head, ■... Driven gear, (44)... Selector gear, j49)... Lock pin (locking means). Shizuo Sano, Patent Attorney for Sanyo Electric Co., Ltd. Figure 1 ■ Figure 2

Claims (1)

[Scope of Claims] 1) a main holder that performs index rotation within a work area including a component suction station and a component mounting station;
A plurality of auxiliary holders each holding a plurality of suction heads, and a driven gear connected to the auxiliary holders are engaged with each other to change the attachment angle of the auxiliary holder with respect to the main holder. An electronic component mounting device comprising: a selector gear that determines which of the heads is involved in component mounting; and a locking means that stops rotation of the sub-holder except during an engagement period of the selector gear.