JPH10229295A - Apparatus for detecting faulty mounting in component feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for detecting faulty mounting of a component carrier, which detects poor mounting in a component feeder caused in 3 modes by a simple mechanism. SOLUTION: When a component feeder 40 is correctly mounted on a mounting table 31, a light-passing hole 53 of a vertical plate 51 which is integrated with a tape-retaining plate is set to a specified position. A clamp lever 55 is operated, so that a coupling roller at the lower end correctly couples with a coupling at the lower face of the table 31 to rotate a top end optical path switch 57 to a position which is located further out than the hole 53 to open the optical path of a light beam 42 passing from an emitter 41a of an optical sensor through the hole 53. A light-receiving part outputs a signal showing a good mounting condition. If the components feeder or tape retainer member floats up, the position of the hole 53 shifts, to cause the vertical plate 52 to shut off the optical path 42. If the lever 55 is faulty locked even though there is no floating, the switch 57 shuts off the path 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting failure detection apparatus for a component mounting apparatus for detecting a mounting failure of a component supply apparatus mounted on a mounting table of the component mounting apparatus.

[0002]

2. Description of the Related Art Conventionally, there has been a production line for automatically mounting a large number of chip-shaped electronic components such as ICs, resistors and capacitors on a circuit board and soldering the mounted electronic components to manufacture a board unit. is there. As a device for mounting electronic components on a circuit board in such a production line, there is a component mounting device (also called a component mounting device, a mounter, or the like). The component mounting apparatus includes a work head for mounting electronic components on a circuit board, and a mounting table for supplying the electronic components to the work head. A plurality of component supply devices are appropriately mounted on the mounting table from outside according to the work content of the work process.

FIG. 7 (a) shows such a component supply device,
FIG. 2 is a perspective view of a mounting table on which the component supply device is mounted, and FIG. 2B is a side view of the component supply device in a state where the component supply device is mounted on the mounting table and a cross-sectional view of the mounting table. ing.

As shown in FIGS. 1 (a) and 1 (b), a component supply device 1 is provided with a supply unit 2 for supplying components at a front part (left side in the figure) and a rear part (right side in the figure). Is provided with a cassette support pin 3. Although not particularly shown, a cassette on which a tape containing predetermined components is wound at predetermined intervals is detachably mounted on the cassette support pins 3. Usually, a plurality of component supply devices 1 are prepared according to the number of types of electronic components mounted on a circuit board, and are mounted on a mounting table of the component mounting device.

[0005] The supply section 2 includes a tape feed rotation member 5 rotatably supported by the support shaft 4, a ratchet gear 6 that rotates coaxially with the support shaft 4 at a predetermined pitch, and a tape feed rotation member 5.
The slide plate 7 that engages with the projection 5a formed at the upper end of the slide plate 7 by the notch 7a, the sealing claw 8 formed integrally with the slide plate 7, and the slide plate 7 slides with the base of the supply unit 2. It is formed of a holding plate 9 that can be freely held, two stopper pins 11 for fixing the holding plate 9 to a base, and the like.

A drive transmission member 13 rotatably supported by a support shaft 12 and a take-up clutch plate 15 rotatably supported by a support shaft 14 between the supply section 2 and the cassette support pin 3. Is arranged. Drive transmission member 13
Has a key-shaped drive arm extending horizontally and vertically, and a lateral arm 13a extending substantially horizontally rearward (to the right in the drawing) from the support shaft 12 of the drive arm has an end that is substantially vertical. It connects to the lower end of the arranged bar-shaped connecting member 16. The upper end of the connecting member 16 is connected to the winding clutch plate 15 described above.

The lower arm 13b extending downward from the support shaft 12 of the drive arm has a central portion projecting in the vertical direction of the tape feeding / rotating member 5 via another rod-shaped connecting member 17 arranged substantially horizontally. Connected to the vertical arm 5b.
Further, a drive engagement member 18 is attached to a lower end of the lower arm 13b. The tip of the drive engagement member 18 that protrudes below the lower surface of the component supply device 1 is
A pin 19 is provided so as to protrude below the main body.

When the component supply device 1 is mounted on the mounting table 20, two insertion pins 21 provided on the front and rear of the lower surface of the component supply device 1 are moved to predetermined positioning holes 22 on the mounting table 20.
22, the component supply device 1 is positioned, and the pin 19 is arranged so as to be able to engage with the piston 24 of the cylinder 23.

When the piston 24 advances to the right in the figure,
The drive transmission member 13 rotates in the counterclockwise direction, and on the other hand, via the connecting member 17, the vertical arm 5b of the tape feed rotation member 5, the protrusion 5a, the notch 7a, and the slide plate 7,
The sealing claw 8 is fed forward (to the left in the figure) to move the component together with the tape to the supply port, while the reel 25 is intermittently driven to rotate via the connecting member 16 and the take-up clutch plate 15. Then, the component encapsulating film of the peeled tape is wound up. The part that has moved to the supply port and is exposed is sucked by the suction nozzle of the work head. The empty portion 26 of the tape after the parts are taken out is sequentially discharged backward.

[0010] In the component supply device 1 configured and operated as described above, if the mounting position is incorrect, components cannot be supplied to the working head correctly. In order to correctly mount the component supply device 1 on the mounting table 20, not only the arrangement position but also the vertical position is important. For example, the mounting table 2 in the component supply device 1
If the floating from zero occurs, not only the work head cannot correctly suck the component, but also the collision between the component and the work head at the time of suction may damage both parts. For this reason, a hole is provided in an appropriate place such as a casing of the component supply device 1 and a light beam of an optical sensor is passed through the hole to detect the floating of the component supply device 1.

[0011]

However, in the above method, only the floating of the main body of the component supply device is detected, so that even if the tape holding member (pressing plate) of the supply port is floating. This cannot be detected. If the presser plate is lifted, the presser on the slide plate becomes loose and the tape cannot be correctly fed out when the slide plate is fed forward, thus causing a problem that the supply work of parts is aborted. .

Further, since the component mounting device involves considerable vibration during the component mounting operation, if the component supply device is not securely fixed to the mounting table, the component mounting device eventually emerges from the mounting table due to the above-described vibration. There is a risk of doing so. In order to prevent this, the component supply device is provided with a clamp lever for securely fixing the component supply device to the mounting table. However, if there is a mistake in setting the clamp lever due to careless operation or the like, the component supply device rises due to vibration, and the same problem as described above occurs. However, there is no other method of confirming the setting of the clamp lever except for leaving it to the attention of the operator.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances,
By providing a mounting failure detection device of the component mounting device that detects the mounting failure of the component supply device by a simple mechanism due to the lifting of the component supply device, the setting error of the tape presser bracket, the setting operation error of the clamp lever, etc. is there.

[0014]

The construction of the mounting failure detecting apparatus for a component mounting apparatus according to the present invention will be described below. The mounting failure detecting device for a component mounting apparatus according to the present invention is configured such that the tape containing the component is held so as to be able to be fed out, and the tape is set in the component supply unit of the component supply device mounted on the mounting table of the component mounting device. A light transmitting portion formed at a predetermined position of a holding member for holding the position, and a light beam provided on the component mounting device and transmitted through the light transmitting hole when the component supply device is correctly mounted on the mounting table. Detecting means comprising a light emitting portion for emitting light and a light receiving portion for receiving a light beam emitted by the light emitting portion, and a central portion provided on the component supply device for supporting the central portion to fix the component supply device to the mounting table. When one end is correctly engaged with the mounting table by the rotation, the other end opens the optical path of the light beam, and when one end is not correctly engaged with the mounting table, the other end is the light. Cut off beam path Consisting of a clamp lever that.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view illustrating a configuration of a placement failure detection device of a component supply device according to an embodiment. FIG. 1 shows an electronic component mounting apparatus (hereinafter, simply referred to as a component mounting apparatus) 30 and mounting tables 31a and 31b disposed before and after the component mounting apparatus 30 (diagonally lower left and upper right directions in the figure). And the component supply device 40
(In the figure, only one is arranged on the mounting table 31a in the foreground for easy understanding.)

The component mounting device 30 is provided inside a base 32,
Although not particularly shown, a control circuit for controlling each unit, a support plate device for supporting the incoming substrate from below, and the like are provided. Although an illustration of a protective cover that covers the upper part is omitted, an input device including a liquid crystal display and a touch panel is provided on the front of the protective cover, and various instructions can be input by an external operation. Is available.

On the base 32, a pair of fixed and movable parallel board guide rails 33a and 33b are provided at the center in the direction of transport of a printed circuit board (hereinafter simply referred to as a board) (obliquely from the lower right in the figure). It is arranged to extend horizontally (upper left). A plurality of loop-shaped conveyor belts are movably disposed in contact with the lower portions of the board guide rails 33a and 33b. The conveyor belt is driven by a belt drive motor and travels in the substrate transport direction, with the belt side portions each having a width of several millimeters peeped into the substrate transport path from under the substrate guide rails 3a or 3b, and moves on both sides of the back surface of the substrate. The substrate is transported while being supported from above.

The pair of board guide rails 33a and 33
b, a pair of left and right fixed rails 34a and 34b are provided extending in parallel to the direction perpendicular to the substrate transfer direction, and the moving rail 35 is bridged between the fixed rails 34a and 34b to form the fixed rail 34a. And 34b are slidably engaged along the longitudinal direction. A work head 36 is slidably suspended on the moving rail 35 along the longitudinal direction of the moving rail 35.

A suction nozzle (not shown) is held at the tip of the working head 36 (not shown in the figure and not shown). The work head 36 moves freely back and forth, left and right, and further vertically moves up and down while sucking a chip-shaped electronic component (hereinafter simply referred to as a component) from a supply port of the component supply device 40 by a suction nozzle. Then, the component is mounted on a board.

The light emitting portions 41, which correspond to the mounting tables 31a and 31b, respectively, are positioned below the fixed rails 34a and 34b, and are fixed to the auxiliary frame of the component mounting apparatus.
An optical sensor 41 including a and a light receiving unit 41b is disposed (in the figure, the optical sensor 41 corresponding to the mounting table 31b is hidden and cannot be seen). The light beams 42 of these optical sensors 41
As will be described in detail later, an optical path is formed so as to penetrate the tip of the component supply device 40 mounted on the mounting tables 31a and 31b.

FIG. 2 is a perspective view of the component supply device 40. As shown in the drawing, the component supply device 40 has substantially the same configuration as the component supply device 1 shown in FIGS. 7A and 7B except for the configuration of the tip (obliquely upper right in the figure). It is. That is, the configuration and function of the cassette support pin 44, the reel 45, the drive transmission member 46, the ratchet gear 47, the slide plate 48, the tape feed rotation member 49, the pressing plate 51, and the members engaged with them in FIG. 7 (a) and 7 (b), the cassette support pin 3, the reel 25, the drive transmission member 13, the ratchet gear 6, the slide plate 7, the tape feed rotation member 5, the pressing plate 9, and the engagement with them. The configuration and function of each member are the same. It should be noted that FIG.
Is also shown in the drawing. Cassette 4
A tape containing parts is wound around 3.

In the present embodiment, the difference from the case of FIGS. 7A and 7B is that in the configuration of the supply section of the component supply apparatus 40, the holding plate 51 is provided with a vertical plate integrated therewith. 52
Is formed, and a light transmitting hole 53 is formed at the tip of the vertical plate 52. In addition, a clamp lever 55 is rotatably supported by a support shaft 54 at the lower end of the component supply device 40. This clamp lever 55
Is also different from the general shape. That is, in addition to the configuration of the lower end portion that holds the engagement roller 56, the upper end portion is extended to form the optical path opening / closing portion 57. An operation piece 58 is formed by being bent inward at a right angle beyond the optical path opening / closing section 57.

FIG. 3 shows a component supply device 40 having the above-described configuration.
FIG. 4 is a perspective view showing a state when correctly mounted on the mounting table 31 (31a or 31b), and FIG. 4 is an enlarged view of a state of a tip end thereof as viewed from an arrow A in FIG. When the component supply device 40 is correctly mounted on the mounting table 31, the light transmitting holes 53 formed in the vertical plate 52 integrated with the holding plate 51 are positioned with respect to the upper surface of the mounting table 31 as shown in FIG. Positioning hole 5 at the position of distance B to be positioned and inside mounting table 31
9 is located at a position of a distance C with reference position 9.

On the other hand, the clamp lever 55 has its engaging roller 56 (see FIG. 2) properly engaged with an engaging portion (not shown) provided on the lower surface of the mounting table 31.
The upper end of the clamp lever 55 where the operation piece 58 is located is fully pulled down in the clockwise direction in the drawing, that is, outward (to the right in the drawing). As a result, the light path opening / closing section 57 is rotated to a position outside the light transmission hole 53 to open the light path of the light beam 42 passing through the light transmission hole 53.

Thus, as shown in FIG. 3, the light emitting portion 41a fixed to the auxiliary frame 61 of the component mounting apparatus.
Is transmitted (or transmitted) through the light transmitting hole 53 and received by the light receiving portion 41b (see FIG. 1) (not shown), and a signal indicating that the mounting state is possible is received from the light receiving portion 41b. Is output.

FIG. 5 is a diagram showing a state in which the component supply device 40 is not properly placed on the mounting table 31 and floats from the mounting table 31. As shown in the drawing, even if one of the plurality of component supply devices 40 mounted on the mounting table 31, the floating of the main body of the component supply device 40 or the lifting of the holding plate 51 (therefore, the vertical plate 52) in the mounted state. If there is a defect such as, the position of the light transmitting hole 53 of the component supply device 40 that is not properly mounted is shifted, and the light beam 42 is blocked by the vertical plate 52 and cannot pass,
From the light receiving unit 41b, a signal indicating that light cannot be received, that is, a mounting failure is output to the control unit.

FIG. 6 is a diagram showing a state in which the component supply device 40 is correctly placed on the mounting table 31 but is not properly fixed. As shown in the figure, since the component supply device 40 is correctly (without lifting) mounted on the mounting table 31, the light transmitting hole 53 is at a correct position. Therefore, the light beam 42 emitted from the light emitting unit 41a can pass (or transmit) through the light transmission hole 53. However, since the engaging roller 56 of the other clamp lever 55 is not correctly engaged with the engaging portion of the mounting table 31, the upper end portion of the operating piece 58 is not sufficiently pulled down. Therefore,
The light path opening / closing section 57 cannot rotate outside the light transmission hole 53, and blocks the light path of the light beam 42 that is going to pass through the light transmission hole 53. Thus, also in this case, a signal indicating that light cannot be received from the light receiving unit 41b, that is, a mounting failure, is output to the control unit.

As described above, since the tape pressing member of the component supply device is provided with the light transmitting portion for transmitting the light beam of the optical detecting device only when the member is at the correct position, it is of course to detect the floating of the tape pressing member. In addition, since the lifting of the component supply device main body can also be detected, the operation of correctly mounting the component supply device on the mounting table can be progressed without any delay, and the operation efficiency is improved.

Further, since an optical path opening / closing section for opening the optical path of the light beam is provided at the end of the clamp lever for fixing the component supply cassette only when the lever is at a correct position, the component lever is provided on the clamp lever. The fixing of the cassette and the member to be detected that allows the detecting device to detect whether the fixing is correct or not can be used, whereby the correct fixing of the component supply device can be easily recognized with a simple configuration. .

In the above-described embodiment, the light transmitting portion is formed by the light transmitting hole 53. However, the present invention is not limited to this. For example, the light transmitting portion may be formed in a slit shape cut rearward from the front end.

[0031]

As described above, according to the present invention,
Since the correctness of the position of the holding member and the correctness of the position of the clamp lever are determined by one light detection device, not only the floating of the component supply device main body but also the lifting of the component tape pressing member and the clamp lever for fixing the component feeding device. Defective mounting of the component supply device on the mounting table due to inadequate locking etc. can be reliably detected with a simple configuration, and therefore, it is possible to perform complicated detection of mounting failure that occurs in three ways in the component supply device. Regardless, it is possible to provide a floating detection device for a component supply device which is easy to maintain and inexpensive as a whole.

[Brief description of the drawings]

FIG. 1 is an overall perspective view when a component supply device according to an embodiment is mounted on an electronic component mounting device.

FIG. 2 is a perspective view of a component supply device.

FIG. 3 is a diagram illustrating a state when the component supply device is normally mounted on a mounting table.

FIG. 4 is an enlarged view as viewed from an arrow A in FIG. 3;

FIG. 5 is a diagram illustrating a state in which the component supply device is not normally placed on the mounting table and floats from the mounting table.

FIG. 6 is a diagram illustrating a state in which the component supply device is not normally fixed to the mounting table.

FIG. 7A is a perspective view of a conventional component supply device and a mounting table,
FIG. 2B is a side view of the component supply device mounted on the mounting table and a cross-sectional view of the mounting table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Component supply apparatus 2 Supply part 3 Cassette support pin 4 Support shaft 5 Tape feed rotation member 5a Projection 5b Vertical arm 6 Ratchet gear 7 Slide plate 7a Notch 8 Sealing claw 9 Press plate 11 Stop pin 12 Support shaft 13 Drive transmission member 13a Horizontal arm 13b Lower arm 14 Support shaft 15 Take-up clutch plate 16 Connection member 17 Connection member 18 Drive engagement member 19 Pin 20 Mounting base 21 Insertion pin 22 Positioning hole 23 Cylinder 24 Piston 25 Reel 26 Tape parts Empty part 30 Electronic component mounting device (component mounting device) 31 (31a, 31b) Mounting table 32 Base 33a, 33b Board guide rail 34a, 34b Fixed rail 35 Moving rail 36 Work head 40 Component supply device 41 (41a) 41b) Optical sensor 41a Light emitting unit 41b Optical part 42 Light beam 43 Cassette 44 Cassette support pin 45 Reel 46 Drive transmission member 47 Ratchet gear 48 Slide plate 49 Tape feed rotation member 51 Pressing plate 52 Vertical plate 53 Light transmission hole 54 Support shaft 55 Clamp lever 56 Engagement roller 57 Optical path opening / closing section 58 Operation piece 59 Positioning hole 61 Auxiliary frame

Claims (1)

[Claims] 1. A pressing member for holding a tape containing a component so as to be able to pay out and hold the tape at a predetermined position in a component supply unit of a component supply device mounted on a mounting table of a component mounting device. A light transmitting portion formed, a light emitting portion provided in the component mounting device, and emitting a light beam to be transmitted through the light transmitting hole when the component supply device is correctly mounted on the mounting table; and the light emitting portion Detecting means comprising a light receiving portion for receiving a light beam emitted by the component supplying device; and a pivoting portion having a central portion supported to fix the component supplying device to the mounting table, and When one end is correctly engaged with the mounting base, the other end opens the optical path of the light beam, and when one end is not correctly engaged with the mounting base, the other end cuts off the optical path of the light beam. , Consisting of A placement failure detection device for a component supply device.