JP3752040B2 - Mounting failure detection device for component supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting failure detection device for a component mounting device that detects a mounting failure of a component supply device mounted on a mounting base of the component mounting device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a production line in which a large number of chip-shaped electronic components such as ICs, resistors, and capacitors are automatically mounted on a circuit board, and the mounted electronic components are soldered to manufacture a substrate unit. In such a production line, there is a component mounting device (also referred to as a component mounting device or a mounter) as a device for mounting electronic components on a circuit board. The component mounting apparatus includes a work head for mounting electronic components on a circuit board, and a mounting base for supplying the electronic components to the work head. A plurality of component supply devices are appropriately mounted on the mounting base from the outside according to the work content of the work process.
[0003]
FIG. 7A is a perspective view of such a component supply device and a mounting table on which the component supply device is mounted, and FIG. 7B is a state in which the component supply device is mounted on the mounting table. The side view of the component supply apparatus in and the sectional view of the mounting base are shown.
[0004]
As shown in FIGS. 1A and 1B, the component supply apparatus 1 is provided with a supply unit 2 for supplying components to the front (left side in the figure) and a cassette supported at the rear (right side in the figure). Pin 3 is provided. Although not particularly shown, a cassette on which a tape holding predetermined parts at predetermined intervals is attached to the cassette support pins 3 in a detachable manner. A plurality of the component supply devices 1 are usually prepared according to the number of types of electronic components mounted on the circuit board, and are mounted on the mounting base of the component mounting device.
[0005]
The supply unit 2 is formed at the upper end of the tape feed rotating member 5 that is rotatably supported by the support shaft 4, the ratchet gear 6 that rotates coaxially with the support shaft 4 at a predetermined pitch, and the tape feed rotating member 5. The slide plate 7 engaged with the protruding portion 5a by the notch portion 7a, the sealing claw 8 formed integrally with the slide plate 7, and the press plate for slidably holding the slide plate 7 with the base portion of the supply portion 2 9. It is formed of two retaining pins 11 for fixing the presser plate 9 to the base.
[0006]
Between the supply unit 2 and the cassette support pin 3, 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 are disposed. Is done. The drive transmission member 13 includes a key-type drive arm extending in the horizontal direction and the vertical direction, and a lateral arm 13a extending substantially horizontally rearward (rightward in the drawing) from the support shaft 12 of the drive arm has an end portion thereof. Are connected to the lower end of a rod-like connecting member 16 arranged substantially vertically. The upper end of the connecting member 16 is connected to the take-up clutch plate 15.
[0007]
The lower arm 13b extending downward from the support shaft 12 of the drive arm has a vertical arm projecting in the vertical direction of the tape feed rotating member 5 through another connecting member 17 in the form of a bar arranged substantially horizontally. It is connected to 5b. Further, a drive engagement member 18 is attached to the lower end of the lower arm 13b. A pin 19 projects from the tip of the drive engagement member 18 that projects downward from the lower surface of the component supply device 1 so as to go around the lower part of the product supply device 1 main body.
[0008]
When the component supply device 1 is placed on the mounting table 20, the two insertion pins 21 provided on the front and back surfaces of the component supply device 1 are fitted into predetermined positioning holes 22 and 22 of the mounting table 20. Thus, the component supply device 1 is positioned, and the pin 19 is disposed so as to be engageable with the piston 24 of the cylinder 23.
[0009]
When the piston 24 advances to the right in the figure, the drive transmission member 13 rotates counterclockwise. On the other hand, the connecting member 17, the vertical arm 5 b of the tape feed rotation member 5, the protruding portion 5 a, and the notch portion. 7a and the slide plate 7 are used to feed the sealing claw 8 forward (to the left in the figure), and the components are moved to the supply port together with the tape. On the other hand, the connection member 16 and the take-up clutch plate 15 are used. The reel 25 is driven to rotate intermittently to wind up the part encapsulating film of the peeled tape. The parts exposed to the supply port are adsorbed by the adsorption 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 apparatus 1 configured and operated in this manner, if the placement position is incorrect, the component cannot be correctly supplied to the work head. In order to correctly mount the component supply apparatus 1 on the mounting table 20, not only the position of the arrangement but also the vertical position is important. For example, if the component supply apparatus 1 is lifted from the mounting base 20, not only the work head cannot correctly suck the component, but also the collision between the component and the work head may occur at the time of sucking, and both may be damaged. For this reason, a hole is provided at an appropriate location such as a casing of the component supply apparatus 1 and the light beam of the optical sensor is passed through the hole to detect the floating of the component supply apparatus 1.
[0011]
[Problems to be solved by the invention]
However, since the above method only detects the floating of the component supply device main body, it cannot be detected even if the tape presser fitting (press plate) of the supply port is lifted. If the presser plate is lifted, the presser foot on the slide plate will be sweetened, and when the slide plate is fed forward, the tape cannot be fed out correctly, thus causing a problem that the parts supply work will be interrupted. .
[0012]
In addition, since the component mounting apparatus is accompanied by a considerable amount of vibration during the component mounting operation, if the component supply device is not securely fixed to the mounting base, the above-described vibration may cause the part mounting apparatus to be lifted off. is there. 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 base. However, if there is a setting error due to careless operation or the like on the clamp lever, the component supply device will be raised by vibration, resulting in the same problem as described above. However, there is no other method for confirming the clamp lever setting other than relying on the operator's attention.
[0013]
An object of the present invention is to provide a component that detects a mounting failure of a component supply device by a simple mechanism due to a floating of the component supply device, a setting error of a tape pressing bracket, a setting operation of a clamp lever, etc. It is to provide a mounting failure detection device for a mounting device.
[0014]
[Means for Solving the Problems]
Below, the structure of the mounting failure detection apparatus of the component mounting apparatus of this invention is described.
The mounting failure detection apparatus for a component mounting apparatus according to the present invention is configured to fix the tape in the component supply section of the component supply apparatus that holds the tape storing the component so that the tape can be fed out and is mounted on the mounting base of the component mounting apparatus. A light transmitting portion formed at a predetermined position of a presser member to be held in position, and provided in the component mounting device, when the component supply device is correctly placed on the mounting base, and when the presser member is in a correct position. A detecting means comprising a light emitting portion that emits a light beam to be transmitted through the light transmitting portion and a light receiving portion that receives the light beam emitted from the light emitting portion; and The center part is supported and rotated to fix the component supply device, and when the one end is correctly engaged with the mounting table by the rotation, the other end releases the optical path of the light beam, and one end is connected to the mounting table. Engage correctly Itoki consists of a clamping lever and the other end to block the optical path of the light beam.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an external perspective view showing a configuration of a placement failure detection device for a component supply device according to an embodiment. The figure shows an electronic component mounting apparatus (hereinafter, simply referred to as a component mounting apparatus) 30 and mounting bases 31a and 31b disposed before and after the component mounting apparatus 30 (in the diagonally lower left direction and the diagonally upper right direction in the figure), respectively. 6 shows a state in which the component supply device 40 (only one is shown on the front mounting base 31a for easy understanding) is mounted.
[0016]
The component mounting device 30 includes a control circuit that controls each unit, a support plate device that supports a substrate to be loaded from below, and the like, although not particularly illustrated, inside the base 32. In addition, although an illustration of a protective cover covering the upper side is omitted, an input device such as a liquid crystal display or a touch panel is provided on the front surface of the protective cover, and various instructions can be input by an external operation. Can be done.
[0017]
On the base 32, a pair of fixed and movable parallel substrate guide rails 33a and 33b are arranged in the center in the transport direction of the printed circuit board (hereinafter simply referred to as the substrate) (from the diagonally lower right to the diagonally upper left direction in the figure). And horizontally extending. A plurality of loop-shaped conveyor belts are disposed so as to be able to run in contact with the lower portions of the board guide rails 33a and 33b. The conveyor belt is driven by a belt drive motor with the side of the belt of several millimeters wide, looking from the bottom of the board guide rail 3a or 3b to the board transfer path, and running in the board transfer direction. The substrate is transported while being supported.
[0018]
A pair of left and right fixed rails 34a and 34b are disposed extending across the pair of substrate guide rails 33a and 33b in a direction perpendicular to the substrate transport direction, and are bridged between the fixed rails 34a and 34b. Thus, the movable rail 35 is slidably engaged along the major axis direction of the fixed rails 34a and 34b. A work head 36 is suspended on the moving rail 35 so as to be slidable along the long axis direction of the moving rail 35.
[0019]
A suction nozzle (not shown) is held at the tip of the work head 36 (not shown in the drawing and omitted). The work head 36 moves freely back and forth, right and left, and further moves up and down freely, and sucks a chip-like electronic component (hereinafter simply referred to as a component) from a supply port of the component supply device 40 by a suction nozzle. The component is mounted on the board.
[0020]
An optical sensor 41 comprising a light emitting part 41a and a light receiving part 41b, which are respectively positioned below the fixed rails 34a and 34b and fixed to the auxiliary frame of the component mounting device, is disposed corresponding to the mounting bases 31a and 31b. (In the figure, the optical sensor 41 corresponding to the mounting base 31b is hidden and cannot be seen). As will be described in detail later, the light beams 42 of these optical sensors 41 form an optical path so as to penetrate through the front ends of the component supply devices 40 mounted on the mounting bases 31a and 31b.
[0021]
FIG. 2 is a perspective view of the component supply device 40. As shown in the figure, the component supply device 40 is substantially the same as the configuration of the component supply device 1 shown in FIGS. 7 (a) and 7 (b) except for the configuration of the tip portion (diagonally upper right). It is. That is, the configurations and functions 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 rotating member 49, the presser plate 51, and the members engaged with them are shown 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 rotating member 5, the press plate 9 and the engagement with them. It is the same as the structure and function of each member. In the figure, the cassette 43 attached to the cassette support pin 3 is also shown. The cassette 43 is wound with a tape containing components.
[0022]
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 above-described presser plate 51 is formed with a vertical plate 52 integral therewith. The light transmitting hole 53 is formed at the tip of the vertical plate 52. In addition, a clamp lever 55 is disposed at the lower end of the tip of the component supply device 40 so as to be rotatably supported by the support shaft 54. The clamp lever 55 is also different from a 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 bending the tip of the optical path opening / closing portion 57 inward at a right angle.
[0023]
FIG. 3 is a perspective view showing a state when the component supply device 40 having the above-described configuration is correctly placed on the mounting base 31 (31a or 31b), and FIG. It is A arrow view of FIG. When the component supply device 40 is correctly placed on the mounting base 31, the light transmission hole 53 formed in the vertical plate 52 integrated with the presser plate 51 is set on the upper surface of the mounting base 31 as shown in FIG. 4. The position is determined to be a position at a distance B which is a position at a distance B and a position at which the positioning hole 59 inside the mounting base 31 is a reference position.
[0024]
On the other hand, the clamp lever 55 has its engagement roller 56 (see FIG. 2) correctly engaged with an engagement portion (not shown) disposed on the lower surface of the mounting base 31, and therefore, the operation piece of the clamp lever 55 The upper end portion 58 is sufficiently pulled down in the clockwise direction in the figure, that is, outward (to the right in the figure). Thereby, the optical path opening / closing part 57 is rotated to a position outside the light transmission hole 53 and opens the optical path of the light beam 42 passing through the light transmission hole 53.
[0025]
As a result, as shown in FIG. 3, the light beam 42 emitted from the light emitting portion 41a fixed to the auxiliary frame 61 of the component mounting apparatus passes (or passes through) the light transmission hole 53, and is not shown in the figure. The light receiving unit 41b (see FIG. 1) receives the light, and the light receiving unit 41b outputs a signal indicating that the mounting state is possible.
[0026]
FIG. 5 is a diagram illustrating a state when the component supply device 40 is not normally placed on the mounting base 31 and is lifted from the mounting base 31. As shown in the figure, even if one of the plurality of component supply devices 40 mounted on the mounting table 31 is floated, the component supply device 40 main body floats or the presser plate 51 (and hence the vertical plate 52) floats. And the like, the position of the light transmission hole 53 of the component supply device 40 that is improperly mounted is displaced, the light beam 42 is blocked by the vertical plate 52, and cannot pass through the light receiving unit 41b. A signal indicating a defect is output to the control unit.
[0027]
FIG. 6 is a diagram showing a state when the component supply device 40 is correctly placed on the mounting base 31 but is not normally fixed. As shown in the figure, since the component supply device 40 is correctly (without floating) placed on the mounting base 31, the light transmission hole 53 is in the correct position. Therefore, the light beam 42 emitted from the light emitting portion 41 a can pass (or pass 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 base 31, the upper end portion where the operation piece 58 is not sufficiently pulled down. Therefore, the optical path opening / closing part 57 cannot rotate outward from the light transmission hole 53, and blocks the optical path of the light beam 42 trying to pass through the light transmission hole 53. Thereby, also in this case, the light receiving unit 41b outputs a signal indicating that light cannot be received, that is, a mounting defect, to the control unit.
[0028]
As described above, since the tape pressing member of the component supply device is provided with the light transmitting portion that transmits the light beam of the optical detection device only when the member is in the correct position, the detection of the lifting of the tape pressing member is, of course, Since the float of the component supply apparatus main body can also be detected, the operation of correctly mounting the component supply apparatus on the mounting base can be progressed without delay, and the work efficiency is improved.
[0029]
In addition, since the optical path opening / closing section that opens 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 in the correct position, the component supply cassette is fixed to the clamp lever. In addition, the detection device can be used as a member to be detected to detect whether the fixing is correct or not. Accordingly, it is possible to easily recognize correct fixing of the component supply device with a simple configuration.
[0030]
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 out from the front end.
[0031]
【The invention's effect】
As described above, according to the present invention, since the correctness of the position of the pressing member and the correctness of the position of the clamp lever are discriminated by a single light detection device, not only the floating of the component supply device body but also the component tape pressing member Inadequate mounting of the component supply device on the mounting base due to improper lifting or locking of the clamp lever that fixes the component supply device, etc., can be reliably detected with a simple configuration, and therefore occurs in three ways. It is possible to provide a float detection device for a component supply device that is easy to maintain and low in cost as a whole despite the complicated detection of mounting defects.
[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 the mounting table;
4 is an enlarged view taken along arrow A in FIG. 3;
FIG. 5 is a diagram illustrating a state when the component supply apparatus is not normally placed on the mounting base but is lifted from the mounting base;
FIG. 6 is a diagram illustrating a state when the component supply device is not normally fixed to the mounting base.
7A is a perspective view of a conventional component supply device and a mounting table, and FIG. 7B 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 device 2 Supply part 3 Cassette support pin 4 Support shaft 5 Tape feed rotation member 5a Protrusion part 5b Vertical arm 6 Ratchet gear 7 Slide plate 7a Notch part 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 Empty part 30 Electronic component mounting device (component mounting device)
31 (31a, 31b) Mounting base 32 Bases 33a, 33b Board guide rails 34a, 34b Fixed rail 35 Moving rail 36 Work head 40 Component supply device 41 (41a, 41b) Optical sensor 41a Light emitting part 41b Light receiving 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 rotating member 51 Press plate 52 Vertical plate 53 Light transmission hole 54 Support shaft 55 Clamp lever 56 Engagement roller 57 Optical path opening / closing part 58 Operation piece 59 Positioning hole 61 Auxiliary frame

Claims (1)

Light transmission formed at a predetermined position of a pressing member that holds the tape in a fixed position in the component supply portion of the component supply device that holds the tape containing the component in a freely feedable manner and is mounted on the mounting base of the component mounting device. And
A light emitting unit that is provided in the component mounting device and that emits a light beam to be transmitted through the light transmission unit when the component supply device is correctly placed on the mounting base and when the pressing member is in a correct position ; A detecting means comprising a light receiving portion for receiving a light beam emitted from the light emitting portion;
The component supply device is pivoted with a central portion supported by the mounting table to fix the component supply device, and when the one end is correctly engaged with the mounting table by the rotation, the other end is the light. A clamp lever that releases the optical path of the beam and the other end interrupts the optical path of the light beam when one end does not properly engage the mounting base;
A mounting failure detection device for a component supply device, comprising:

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