JP5816113B2 - Component mounting equipment - Google Patents

Description

  The present invention relates to a component mounting apparatus for mounting on a substrate a component supplied from a component supply device including a cover tape accommodating portion that accommodates a cover tape peeled off from a carrier tape.

2. Description of the Related Art Conventionally, a tape feeder using a tape reel is known as an electronic component supply device that supplies an electronic component to a nozzle suction position of a transfer head of an electronic component mounting apparatus.
In a tape feeder, in general, a carrier tape composed of two layers of a base tape containing a plurality of electronic components and a cover tape that covers the electronic components so as not to fall off is sequentially delivered from the reel, and the nozzle suction position The cover tape is peeled off from the base tape in front of. Then, the peeled cover tape is accommodated in a predetermined cover tape accommodating portion.

The cover tape housing portion includes a cover tape inlet and a cover tape outlet formed on an end surface opposite to the inlet. Further, an openable / closable discharge port cover is attached to the discharge port, and the cover tape in the cover tape housing portion can be discharged from the discharge port by manually opening the discharge port cover.
Some discharge port covers are configured to automatically open by being pushed from the inside by the elastic force of the cover tape when the inside of the cover tape accommodating portion is filled with the cover tape (for example, Patent Document 1).

However, when the discharge port cover is automatically opened by the elastic force of the cover tape, the discharge port cover is unexpectedly opened during the production operation of the surface mounting apparatus. At this time, when the outlet cover is opened from a state where the pressure is increased, the cover tape is scattered around and entangled with other adjacent tape feeders, or it takes time to dispose of the tape. .
Therefore, the capacity that can be stored for the cover tape was determined in advance by design, and the capacity of the cover tape stored in the cover tape storage unit was calculated based on the tape feed amount and the number of times the tape was approached. A method has been devised to detect this and notify the operator of this (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 2003-185854 JP 2002-171090 A

  However, since the material and thickness of the cover tape are different depending on the manufacturer, the amount of cover tape that can be stored in the cover tape storage portion varies depending on the cover tape. In the technique described in Patent Document 2, since the capacity is calculated by the same calculation regardless of the material and thickness of the cover tape, the calculated result is greatly different from the capacity of the actually stored cover tape. May end up.

Then, it is not possible to detect that it is almost full, the cover tape is scattered around, and it is misjudged that it is almost full even though there is still enough storage capacity. The problem of prompting occurs.
Therefore, an object of the present invention is to provide a component mounting apparatus that can correctly detect that the storage capacity of the cover tape has reached the storage capacity of the cover tape storage section and the disposal time has come.

  In order to solve the above-mentioned problems, a component mounting apparatus according to the present invention includes a cover tape housing portion that accommodates a cover tape that has been peeled off from a carrier tape, and that has a discharge port for discharging the accommodated cover tape. A component mounting apparatus for mounting a component supplied from a tape feeder at a predetermined position on a substrate, wherein the cover tape is filled in the cover tape housing portion. When the discharge port cover is pushed in the opening direction from the closed state by the force generated, the discharge port cover is biased in the closing direction against the elastic force, and the discharge port cover is not fully opened. Urging means for stopping at the same time, open state detecting means for detecting that the discharge port cover is in an open state in which the discharge port cover is not fully open, and the discharge port cover is not opened by the open state detection unit. When detecting that the open state is opened, it is characterized in that and a notification means for notifying this to the operator.

  In this way, when the discharge tape cover is opened due to excessive storage capacity of the cover tape, it is possible to prevent the discharge cover from being fully opened to the position. Therefore, it is possible to suppress the cover tape from spilling from the discharge port. In addition, when the cover tape capacity is excessive and the outlet cover is opened, this is detected by a sensor, so the cover tape disposal time is properly detected regardless of differences in the material and thickness of the cover tape. Can be warned correctly.

  Further, in the above, the open state detecting means uses an optical sensor having a light projecting means and a light receiving means as the sensor, and when the discharge port cover is in a closed state, the optical axis of the optical sensor is used. The discharge port cover is arranged on the optical axis of the optical sensor when the discharge port cover is not arranged on the upper side and the discharge port cover is in an open state in which the discharge port cover is not fully opened. It is said.

  Thereby, the output of the light receiving means that receives light from the light projecting means can be changed between when the discharge port cover is in the closed state and when it is in the open state. Therefore, by monitoring the output of the light receiving means, it can be detected easily and appropriately that the discharge port cover is open. Furthermore, by adjusting the installation position of the sensor optical axis, it is possible to adjust the timing at which it is determined that the discharge port cover is open.

Furthermore, in the above, the optical sensor is a transmissive optical sensor in which the light projecting unit and the light receiving unit are arranged to face each other with the discharge port cover interposed therebetween, and the open state detecting unit is connected to the light projecting unit. When the time for which the light receiving means cannot receive the projected light continues for a predetermined time, it is determined that the discharge port cover is in an open state in which the cover is not fully opened.
As described above, since the transmission type optical sensor is used, it is possible to detect the open state of the outlet cover relatively easily without providing complicated control and detection means. In addition, when the state in which the light projected from the light projecting unit cannot be received by the light receiving unit continues for a predetermined time, it is determined that the discharge port cover is in the open state, so the operator accidentally blocks the sensor optical axis. It is possible to prevent erroneous determination that the discharge port cover is open.

  Still further, in the above, the optical sensor is a reflective optical sensor in which the light projecting unit and the light receiving unit are arranged on the same side with respect to the discharge port cover, and the light projection unit of the discharge port cover. And a reflecting plate is provided on the surface facing the light receiving means, and the open state detecting means is configured to receive the reflected light of the light projected from the light projecting means for a predetermined time, It is characterized in that the discharge port cover is determined to be in an open state in which it is not fully open.

  As described above, since the reflection type optical sensor is used, it is possible to detect the open state of the discharge port cover relatively easily without providing complicated control and detection means. In addition, when the state in which the reflected light of the light projected from the light projecting means is received by the light receiving means continues for a predetermined time, it is determined that the discharge port cover is in the open state. It is possible to prevent erroneous determination that the discharge port cover is open when the shaft is inserted.

  Further, since the distance from the light projecting means to the reflecting object can be obtained based on the time from when the light is projected from the light projecting means until the reflected light is received by the light receiving means, the light from the light projecting means can be obtained. The reflected tape feeder (tape feeder with the outlet cover open) can be identified. Therefore, working efficiency can be improved as compared with the case where the operator visually identifies the tape feeder whose discharge port cover is open.

Further, in the above, a plurality of the tape feeders are arranged in parallel in the width direction, and the light projecting means is arranged so that the optical state of the optical sensor coincides with the width direction of the tape feeder. And the light receiving means.
Thus, when the optical sensor is a transmissive optical sensor, the light projecting means and the light receiving means are arranged to face each other with the plurality of tape feeders sandwiched therebetween, so that the discharge port covers of the plurality of tape feeders can be covered with one optical sensor. Can be monitored. Further, even when the optical sensor is a reflective optical sensor, the light projecting means and the light receiving means are arranged on one side in the width direction of the tape feeder, so that one optical sensor can cover the outlets of a plurality of tape feeders. Can be monitored.
Therefore, it is not necessary to provide a sensor for each of the plurality of tape feeders, and the cost of the entire apparatus can be reduced.

  According to the present invention, it is detected using a sensor that the discharge port cover has started to open due to excessive storage capacity of the cover tape, and this is notified to the operator, so it is appropriate regardless of the difference in the material and thickness of the cover tape. Can be warned of the appropriate disposal time. Therefore, it is possible to prevent the discharge port cover from being unexpectedly fully opened and the cover tape from being entangled with other adjacent devices, or the cover tape that has jumped out from being scattered on the floor and disturbing the work.

It is a front view which shows the component mounting apparatus which concerns on this invention. It is a top view which shows the component mounting apparatus which concerns on this invention. It is a figure which shows the positional relationship of a tape feeder and a transmission type sensor. It is a perspective view which shows the tape reel for electronic component supply. It is a side view which shows a cover tape accommodating part (fully closed state). It is a side view which shows a cover tape accommodating part (closed state). It is a flowchart which shows the monitoring process procedure performed with a calculating part. It is a figure which shows the positional relationship of a tape feeder and a reflection type sensor. It is a figure which shows the arrangement | positioning position of a reflecting plate.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
(Constitution)
FIG. 1 is a front view showing a component mounting apparatus according to the present invention.
In the figure, reference numeral 1 denotes a component mounting apparatus. The component mounting apparatus 1 includes a main body 2, and a component supply device for supplying electronic components to the set position S of the main body 2 is configured to be separable and connectable. The component supply device mounts a plurality of tape feeders 3 to be described later on the main body 2 of the component mounting device 1 by using a collective exchanging cart.

The main body 2 includes a mounting head that holds an electronic component supplied from a component supply device and releases it at a predetermined mounting position on the substrate inside a case C that covers the outside, and this mounting head in the XY direction. There are provided a transfer device for transferring, a substrate transfer device for transferring a substrate to a mounting position, and for discharging the substrate after completion of mounting. These schematic configurations are as shown in FIG.
That is, the component mounting apparatus 1 includes a pair of transport rails 21 extending in the X direction on the upper surface of the base 20. The transport rail 21 supports both sides of the circuit board 25 and is driven by a transport motor (not shown) to transport the circuit board 25 in the X direction.

In addition, the component mounting apparatus 1 includes a mounting head 22. The mounting head 22 includes a plurality of suction nozzles that suck electronic components at the bottom, and is configured to be horizontally movable on the base 20 in the XY directions by an X-axis gantry 23 and a Y-axis gantry 24.
In the component mounting apparatus 1, component supply apparatuses that supply electronic components by the tape feeder 3 are mounted on both sides of the transport rail 21 in the Y direction. The electronic component supplied from the tape feeder 3 is vacuum-sucked by the suction nozzle of the mounting head 22 and mounted on the circuit board 25.
Further, the component mounting apparatus 1 is provided with a nozzle changer 26 for replacing the suction nozzle according to the size and shape of the component to be sucked. A plurality of types of nozzles are stored and managed in the nozzle exchanger 26.

Further, a recognition camera 27 composed of a CCD camera is disposed between the component supply device (tape feeder 3) and the circuit board 25. The recognition camera 27 detects the electronic component suction position deviation (deviation between the central position of the suction nozzle and the central position of the suctioned component) and the suction angle shift (tilt) of the electronic component. Is taken.
Further, a distance sensor 28 is attached to the mounting head 22. The distance sensor 28 measures the distance (height) in the Z direction between the suction nozzle and the circuit board 25 using sensor light.

Further, as shown in FIG. 1, a light projector (light projecting means) 41 and a light receiver (light receiving means) 42 are installed in the main body 2 of the component mounting apparatus 1. The light projector 41 and the light receiver 42 constitute a transmissive sensor, and are opposed to each other in the X direction at the set position S of the main body 2. That is, the optical axis of the transmissive sensor coincides with the width direction of the tape feeder 3.
FIG. 3 is a diagram illustrating a positional relationship between the tape feeder 3 and the optical axis of the transmission sensor. FIG. 3 shows a state in which the tape feeder 3 is connected and fixed to the main body 2 of the component mounting apparatus 1.

  The light receiver 42 includes a photoelectric conversion element such as a photodiode or a phototransistor, for example, receives light from the light projector 41, and outputs a detection current corresponding to the amount of light received. The output signal of the light receiver 42 is input to the calculation unit 43. The calculation unit 43 monitors the change in the output of the light receiver 42 and detects that the object has blocked the optical axis (hereinafter referred to as the sensor optical axis) between the light projector 41 and the light receiver 42. The monitoring process executed by the calculation unit 43 will be described in detail later.

As shown in FIG. 3, the optical axis of the transmissive sensor is normally provided behind the tape feeder 3 (on the side opposite to the component picking position P in the Y direction) at a position where it does not interfere with the tape feeder 3. . That is, normally, the light receiver 42 can receive light from the light projector 41.
Although only one tape feeder 3 is illustrated here, one set of transmission type sensors is provided for a plurality of tape feeders 3 arranged in parallel.

The tape feeder 3 supplies electronic components using a tape reel 30 shown in FIG. The tape reel 30 holds a carrier tape 31 that is composed of a base tape 31a and a cover tape 31b and accommodates a large number of electronic components at regular intervals, wound around a cylindrical core.
When the carrier tape 31 is led out from the tape reel 30 and led to the component take-out position P in front of the tape feeder 3, the cover tape 31b is peeled off from the base tape 31a at the component take-out position P, and the electronic component is taken out (by the suction nozzle). The component can be sucked).

  After the components are adsorbed, the carrier tape 31 is fed out by a predetermined amount by a predetermined feeding mechanism. Here, although not particularly illustrated, a rotating body such as a sprocket is used as the feeding mechanism. Specifically, a sprocket that engages with the tape is disposed below the component pick-up position P in the tape feeder 3, and the sprocket is rotated by an electric motor to feed the carrier tape 31 by a predetermined amount.

Further, as shown in FIG. 5, the cover tape 31b peeled off from the base tape 31a is pulled in a recovery direction K opposite to the component transport direction H by a pair of opposing recovery rollers 32, and is introduced into the inlet 33a. To be accommodated in the cover tape accommodating portion 33. The collection roller 32 rotates using the pull motor 34 as a power source.
The cover tape housing portion 33 has a discharge port 33b on the end surface opposite to the introduction port 33a. A discharge port cover 35 is attached to the discharge port 33b.

The discharge port cover 35 can be rotated and opened around a fulcrum shaft 36 provided at the lower end thereof. That is, a fulcrum portion 37 having a cam shape is formed at the lower end portion of the discharge port cover 35, and the fulcrum portion 37 is rotatably supported by the fulcrum shaft 36 so that the discharge port cover 35 is supported by the fulcrum shaft 36. It can be rotated around the center.
The fulcrum part 37 has a cam shape, and the fulcrum part 37 is pressed by a leaf spring 38. Thus, the discharge port cover 35 is urged in the closing direction by the leaf spring 38. Here, the cam shape of the fulcrum part 37 and the urging force of the leaf spring 38 are such that when the cover tape 31b is accommodated in a capacity that can be accommodated by the cover tape accommodating part 33, the outlet of the cover tape 31b is elastic. It is set so that the cover 35 is opened.

  That is, when the cover tape 31b is accommodated in a capacity that can be accommodated by the cover tape accommodating portion 33, the discharge port cover 35 rotates against the urging force of the leaf spring 38 by the elastic force of the cover tape 31b. And it will be in the open state. At this time, the discharge port cover 35 is prevented from being fully opened by the cam-shaped fulcrum portion 37 and the leaf spring 38 that holds the fulcrum portion 37. When the capacity of the cover tape 31b in the cover tape housing portion 33 further increases, the discharge port cover 35 gradually shifts from the open state to the fully open state as the capacity increases.

Further, the discharge port cover 35 is formed with a gripping portion 35a that protrudes to the rear of the tape feeder 3, and the operator can open and close the discharge port cover 35 by holding the gripping portion 35a by hand. Yes.
When the discharge port cover 35 is in the closed state, the optical axis of the transmissive sensor is on the front side of the tape feeder 3 with respect to the grip portion 35a of the discharge port cover 35 and is discharged as shown by a symbol L in FIG. It is provided at a position where it does not interfere with the outlet cover 35. Further, as shown in FIG. 6, the optical axis L of the transmissive sensor is provided at a position that interferes with the discharge port cover 35 when the discharge port cover 35 is in an open state in which it is not fully opened.

  With such a configuration, when the discharge port cover 35 is changed from the closed state to the open state, the light from the light projector 41 is received by the light receiver 42, and the light from the light projector 41 is shielded and the light projector 42 projects the light. The light from 41 cannot be received, and the output of the light receiver 42 changes. Based on the output change of the light receiver 42, the calculation unit 43 detects that the discharge port cover 35 of the tape feeder 3 has been opened, and performs a monitoring process for notifying the operator of this.

  FIG. 7 is a flowchart illustrating a monitoring process procedure executed by the calculation unit 43. This monitoring process starts when the component mounting apparatus 1 starts a component mounting operation. First, in step S1, the calculation unit 43 sets a detection waiting time T. The detection waiting time T is a determination time for determining that the sensor optical axis L is interrupted by the discharge port cover 35 when the sensor optical axis L is blocked by any object, and can be arbitrarily set by the operator. Here, the detection waiting time T is set to a time shorter than the time during which the discharge port cover 35 is maintained in the closed state shown in FIG. 5, for example, within a range of 5 [sec] to 30 [sec].

Next, in step S2, the calculation unit 43 performs a sensor light receiving operation. Here, the detection current of the light receiver 42 is acquired, and it is determined whether or not the detection current of the light receiver 42 is equal to or less than a preset determination threshold value. Then, when the detected current is equal to or less than the determination threshold, it is determined that the sensor optical axis is blocked by some object.
Next, in step S3, the calculation unit 43 determines whether or not the sensor optical axis is continuously blocked by the object during the detection waiting time T set in step S1. Then, even if the sensor optical axis is not blocked or the sensor optical axis is blocked, the process proceeds to step S4 if the duration has not reached the detection waiting time T.
In step S4, the calculation unit 43 determines whether or not the component mounting operation by the component mounting apparatus 1 has ended. If the component mounting operation has not ended, the operation proceeds to step S2 and ends the component mounting operation. If so, the monitoring process is also terminated.

If it is determined in step S3 that the time during which the sensor optical axis is blocked has reached the detection waiting time T, an object blocking the sensor optical axis is detected by the discharge port cover 35 of the tape feeder 3. It judges that there exists, and transfers to step S5.
In step S <b> 5, the arithmetic unit 43 determines that the capacity of the cover tape 31 b filled in the cover tape accommodating part 33 is the accommodation limit of the cover tape accommodating part 33 on the monitor M installed in the main body part 2 of the component mounting apparatus 1. And a screen for notifying that there is a possibility that the discharge port cover 35 is fully opened after a predetermined time and the cover tape 31b spills from the discharge port 33b is displayed.

  Next, in step S6, the calculation unit 43 determines whether or not the operator has performed an operation for resetting the notice display. Here, the reset operation is, for example, an operation in which the monitor M is a touch panel and the operator touches an OK button on the touch panel when confirming the notice display, or a reset button is installed on the main body 2 of the component mounting apparatus 1. This is an operation of pressing the reset button when the operator confirms the notice display.

If it is determined in step S6 that the operator has performed a reset operation, the process proceeds to step S7, the notice display on the monitor M is erased, and then the process proceeds to step S2. On the other hand, if it is determined in step S6 that the operator has not performed the reset operation, the process proceeds to step S8, where it is determined whether or not a predetermined time has elapsed since the notice display on the monitor M. To do.
Here, the predetermined time is set to a time shorter than the time until the discharge port cover 35 is fully opened from the open state shown in FIG. At this time, it is desirable to set with a margin in consideration of differences in the material and thickness of the cover tape 31b, the amount of feed of the carrier tape 31, and the like.

If the predetermined time has not elapsed, the process proceeds to step S6. If the predetermined time has elapsed, it is determined that the discharge port cover 35 is almost fully opened, and the process proceeds to step S9.
In step S9, the calculation unit 43 displays a warning on the monitor M to notify the operator that the fully open state is approaching, and proceeds to step S10. The warning is not limited to the screen display, and for example, sound or light can be used.
In step S10, the calculation unit 43 determines whether or not the operator has performed an operation for resetting the warning display. As an operation for resetting the warning display, there are an operation of touching the monitor M and an operation of pressing a reset button, similarly to the above-described reset operation of the notice display.

If it is determined in step S10 that the operator has not performed the reset operation, the process waits until the reset operation is performed. If it is determined that the operator has performed the reset operation, the process proceeds to step S11.
In step S11, the calculation unit 43 turns off the warning display on the monitor M, and then proceeds to step S2.
The light projector 41 corresponds to the light projecting means, the light receiver 42 corresponds to the light receiving means, and the fulcrum portion 37 and the leaf spring 38 correspond to the biasing means. Step S3 in FIG. 7 corresponds to the open state detection means, and step S5 and the monitor M correspond to the notification means.

(Operation)
Next, the operation of the first embodiment will be described.
When the electronic component mounting operation is activated in the component mounting apparatus 1, the tape feeder 3 sends out the carrier tape 31 in the transport direction H, and peels the cover tape 31b from the base tape 31a before the component suction position P. The base tape 31a is sent in the conveying direction H as it is, and the electronic component is sucked by the suction nozzle of the mounting head 22 at the component suction position P. The sucked electronic component is mounted at a predetermined position on the circuit board 25 fixed to the component mounting apparatus 1.

On the other hand, the peeled cover tape 31b is pulled in the collecting direction K by the collecting roller 32, and is accommodated in the cover tape accommodating portion 33 from the introduction port 33a. At this time, the discharge port cover 35 is held in a closed state as shown in FIG. 5 because the fulcrum portion 37 is pressed by the leaf spring 38.
Therefore, at this time, the discharge port cover 35 does not block the sensor optical axis L between the projector 41 and the light receiver 42. In addition, by setting the sensor optical axis L to be positioned inside the grip portion 35a, the operator can be prevented from accidentally blocking the sensor optical axis L. Accordingly, at this time, the calculation unit 43 confirms from the output of the light receiver 42 that the light receiver 42 can receive the light of the projector 41, that is, the sensor optical axis L is not blocked (step S3 in FIG. 7). No), the component mounting operation is continued as it is (No in step S4).

Thereafter, the cover tape 31b fed into the cover tape accommodating portion 33 is bent due to waist breakage due to contact with the inner surface of the cover tape accommodating portion 33 or entanglement between the tapes, and a large amount of the cover tape 31b gathered in due course. It becomes a state. This lump moves in the cover tape housing 33 in the direction of the discharge port 33b by the force of feeding the cover tape 31b, and exerts a resilient force on the inner surface of the discharge port cover 35 when reaching the discharge port cover 35.
If the feeding of the cover tape 31b is continued thereafter, the density of the cover tape 31b increases in the cover tape accommodating portion 33, and the resilience exerted on the discharge port cover 35 also increases. When the elastic force overcomes the force of the leaf spring 38 closing the discharge port cover 35, the discharge port cover 35 rotates about the fulcrum shaft 36 and is opened as shown in FIG.

However, at this time, the discharge port cover 35 is prevented from being fully opened to the fully opened state by the cam-shaped fulcrum part 37 and the leaf spring 38 that holds the cam-shaped fulcrum part 37. That is, the discharge port cover 35 stops in a slightly opened state.
At this time, the cover tape 31b is held between the cover tape accommodating portion 33 and the discharge port cover 35 without spilling from the discharge port 33b. Thus, it is possible to prevent the cover tape 31b from jumping out from the discharge port 33b, and it is possible to prevent the occurrence of a secondary disaster such as the cover tape 31b that has popped out entangled with another adjacent device or operator.

  Thus, when the discharge port cover 35 is slightly opened, the discharge port cover 35 blocks the sensor optical axis L as shown in FIG. Therefore, the calculation unit 43 confirms from the output of the light receiver 42 that the light receiver 42 cannot receive the light of the projector 41, that is, the sensor optical axis L is blocked. When the time during which the sensor optical axis L is blocked reaches the detection waiting time T set in advance by the operator (Yes in step S3 in FIG. 7), the calculation unit 43 accommodates the outlet cover 35 in the monitor M. A notice screen notifying that the limit has been reached is displayed (step S5).

In the present embodiment, since there is a time lapse from the time when the cover tape storage portion 33 reaches the storage limit and the discharge port cover 35 is fully opened to the fully open state, a notice is displayed on the monitor M. Even after the operation, the component mounting operation is continued until the discharge port cover 35 is fully opened.
By this notice display, the operator can easily and appropriately recognize that there is a tape feeder 3 that needs to collect the cover tape 31b. In addition, since the discharge port cover 35 opens at the timing when the amount of the cover tape 31b filled in the cover tape accommodating portion 33 reaches the limit, the operator can select which tape feeder 3 among the plurality of tape feeders 3. It is possible to visually recognize whether the cover tape storage portion 33 has reached the storage limit.

Further, it is determined that the discharge port cover 35 is opened at a timing when the time during which the sensor optical axis L is blocked reaches a preset detection waiting time T, and the sensor optical axis L is instantaneously blocked. If it is detected, it is not determined that the discharge port cover 35 is open. Therefore, it is possible to prevent erroneous determination that the discharge port cover 35 is open when an operator or the like accidentally blocks the sensor optical axis L. In addition, since the operator can arbitrarily set the detection waiting time T, it is possible to cope with the difference in usability of the operator.
When the operator collects the cover tape 31b from the tape feeder 3 that has reached the storage limit and resets the notice display (Yes in step S6), the calculation unit 43 turns off the notice display on the monitor M (step S7). ).

  On the other hand, when the operator does not perform a reset operation for a predetermined time (Yes in Step S8) even though the notice is displayed on the monitor M (Yes in Step S8), the calculation unit 43 displays a warning on the monitor M (Step S9). . Thereby, it is possible to prompt the operator to collect the cover tape. Therefore, it is possible to prevent the discharge port cover 35 from being fully opened due to the fact that the cover tape 31b is not collected by the operator.

(effect)
Thus, in the first embodiment, when the discharge port cover is changed from the closed state to the open state due to the elastic force of the cover tape filled in the cover tape housing portion, this is detected and notified to the operator. The operator can easily recognize that the amount of the cover tape filled in the cover tape accommodating portion has reached the limit.

  In addition, the cam-shaped fulcrum provided at the lower end of the discharge port cover and the leaf spring holding the cam in the direction of opening the discharge port cover from the closed state due to the elastic force of the cover tape filled in the cover tape housing portion When pushed, it urges the outlet cover to close against the resilience. Therefore, when the discharge port cover is opened due to excessive storage capacity of the cover tape from the state where the discharge port cover is completely closed, the discharge port cover can be prevented from being fully opened. Thereby, it is possible to prevent the cover tape from jumping out of the discharge port when the discharge port cover is opened. As a result, it is possible to prevent the cover tape from being entangled with other adjacent devices, or the cover tape that has popped out from being scattered on the floor from interfering with the work.

Furthermore, by using a transmissive optical sensor including a projector and a light receiver that are arranged to face each other with the discharge port cover interposed therebetween, it is possible to detect that the discharge port cover is in an open state with a relatively simple configuration. At this time, it is determined that the discharge port cover is in an open state when a predetermined detection waiting time has elapsed since the light receiver cannot receive light from the projector. For this reason, when the operator accidentally blocks the sensor optical axis, and the light receiver is temporarily unable to receive light from the projector, it is not determined that the outlet cover is open. be able to. Accordingly, it is possible to suppress the notice display due to erroneous detection and the troublesomeness of the reset operation.
In addition, the optical axis of the optical sensor is aligned with the width direction of the tape feeder, and the projector and receiver are placed opposite each other with multiple tape feeders in between, so the outlet cover of multiple tape feeders can be monitored with one optical sensor. can do. Therefore, it is not necessary to provide a sensor for each of the plurality of tape feeders, and the cost of the entire apparatus can be reduced.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
In the second embodiment, the projector 41 and the light receiver 42 constitute a transmission type sensor in the first embodiment described above, whereas the light projector 41 and the light receiver 42 constitute a reflection type photo sensor. It is configured.

(Constitution)
FIG. 8 is a diagram illustrating a positional relationship between the tape feeder 3 and the optical axis of the reflective sensor according to the second embodiment. FIG. 8 shows a state in which the tape feeder 3 is connected and fixed to the main body 2 of the component mounting apparatus 1.
As shown in FIG. 8, the projector 41 and the light receiver 42 are arranged close to each other on the same side with respect to the tape feeder 3, and the reflected light of the light projected from the projector 41 is received by the light receiver 42. . That is, the optical axis of the reflective sensor does not interfere with the discharge port cover 35 when the discharge port cover 35 is in the fully closed state, as shown by the symbol L in FIGS. When it is in the fully open state, it is installed at a position that interferes with the discharge port cover 35.

Further, as shown in FIG. 9, a reflection plate 35 b is disposed on the surface of the discharge port cover 35 that faces the projector 41 and the light receiver 42.
With such a configuration, the light receiver 42 receives the reflected light of the projector 41 only when the discharge port cover 35 is in the open state. Therefore, the calculation unit 43 can detect that the discharge port cover 35 of the tape feeder 3 has been opened based on the output change of the light receiver 42.

Further, the calculation unit 43 projects the light from the projector 41 to the reflecting plate 35b that returns the reflected light from the installation position of the projector 41 based on the time from when the reflected light is received by the light receiver 42. Calculate the distance. And the tape feeder 3 by which the reflecting plate 35b which returned the said reflected light was arrange | positioned among the several tape feeders 3 arranged in parallel from the calculated distance is specified.
And the calculating part 43 performs the monitoring process shown in FIG. 7 similarly to 1st Embodiment mentioned above, and when performing a notice display on the monitor M at step S5, the information (for example, arrangement | sequence) of the specified tape feeder 3 is performed. Number).

(Operation)
Next, the operation of the second embodiment will be described.
When the discharge port cover 35 is held in a closed state as shown in FIG. 5, the discharge port cover 35 does not block the optical axis L of the reflective sensor. Therefore, the light from the projector 41 is not reflected by the reflecting plate 35 b provided in the discharge port cover 35, and the light receiver 42 does not receive the reflected light of the projector 41. Therefore, the calculation unit 43 confirms from the output of the light receiver 42 that the light receiver 42 does not receive the reflected light of the projector 41, that is, the sensor optical axis L is not blocked (in step S3 of FIG. 7). No), the component mounting operation is continued as it is (No in step S4).

Thereafter, the cover tape 31b is continuously fed into the cover tape accommodating portion 33 by the component mounting operation by the component mounting apparatus 1, and when the accommodation limit of the cover tape accommodating portion 33 is reached, the discharge port cover 35 is centered on the fulcrum shaft 36. It will be in the open state as shown in FIG.
At this time, since the outlet cover 35 blocks the sensor optical axis L as shown in FIG. 6, the light from the projector 41 is reflected by the reflecting plate 35 b provided on the outlet cover 35 and is incident on the light receiver 42. . Thus, the light receiver 42 receives the reflected light of the projector 41.

Therefore, the calculation unit 43 confirms from the output of the light receiver 42 that the light receiver 42 receives the reflected light of the projector 41, that is, the sensor optical axis L is blocked. Further, the calculation unit 43 is a tape feeder provided with a reflection plate 35b that returns reflected light based on the time until the light projected from the projector 41 is reflected by the reflection plate 35b and returns to the light receiver 42. 3 (tape feeder 3 in which the discharge port cover 35 is open) is specified.
When the time during which the sensor optical axis L is blocked reaches the detection waiting time T set in advance (Yes in step S3), the calculation unit 43 indicates that the storage limit of the outlet cover 35 has been reached by the monitor M. A notice screen for notification is displayed (step S5). At this time, information on the tape feeder 3 in which the discharge port cover 35 is open is also displayed.

(effect)
As described above, in the second embodiment, it is compared that the discharge port cover is in the open state by using the reflection type optical sensor including the projector and the light receiver disposed on the same side with respect to the discharge port cover. Can be detected with a simple configuration. At this time, it is determined that the discharge port cover is open when a predetermined detection waiting time has elapsed since the light receiver received light from the projector. For this reason, when the operator accidentally blocks the sensor optical axis, and the light receiver is temporarily unable to receive light from the projector, it is not determined that the outlet cover is open. be able to. Accordingly, it is possible to suppress the notice display due to erroneous detection and the troublesomeness of the reset operation.

Furthermore, by using a reflective optical sensor, the distance from the projector to the reflecting plate that reflects the light of the projector can be obtained. That is, it is possible to identify the tape feeder whose discharge port cover is open in the calculation unit and transmit the information to the operator. As a result, it is possible to eliminate an operation for the operator to visually detect the tape feeder with the discharge port cover slightly opened, and it is possible to improve the efficiency of the cover tape recovery operation.
Further, since the optical axis of the optical sensor is made to coincide with the width direction of the tape feeder, the discharge port covers of a plurality of tape feeders can be monitored by one optical sensor as in the first embodiment described above. Therefore, it is not necessary to provide a sensor for each of the plurality of tape feeders, and the cost of the entire apparatus can be reduced.

(Application examples)
In each of the above embodiments, the projector 41 and the light receiver 42 constituting the optical sensor for detecting the open state of the discharge port cover 35 have been described as being installed in the main body 2 of the component mounting apparatus 1. 41 and the light receiver 42 can also be installed in the batch exchanging carriage of the tape feeder 3.
In each of the above embodiments, as shown in FIG. 5, the sensor optical axis L in the closed state of the discharge port cover 35 is located on the front side of the tape feeder 3 relative to the grip portion 35 a of the discharge port cover 35. Although described, the present invention is not limited to this.

  For example, a hole through which the sensor optical axis L passes may be formed on the surface of the discharge port cover 35 that is orthogonal to the sensor optical axis L. In this case, when the discharge port cover 35 is closed, the sensor optical axis L is passed through the hole so that the discharge port cover 35 and the sensor optical axis L do not interfere with each other. The cover 35 is configured to block the sensor optical axis L. Also in this case, it is possible to prevent the operator from accidentally blocking the sensor optical axis L.

Furthermore, in each said embodiment, although the case where the open state of the discharge port cover 35 was detected using an optical sensor was demonstrated, the sensor which detects the open state of the discharge port cover 35 is not limited to this. . For example, it is possible to use a sensor having a configuration in which a sensor having a contact is provided on each of the discharge port cover 35 and the discharge port 33b of the cover tape housing portion 33 and the switch is turned off when the discharge port cover 35 is opened. In this case, since each of the plurality of tape feeders 3 is provided with a sensor, even when the discharge port covers 35 of the plurality of tape feeders 3 are in the open state, it is possible to accurately determine which discharge port cover 35 is in the open state. Can be detected and notified to the operator.
Further, in each of the above embodiments, the case where the notice display on the monitor M is turned off when the operator performs the notice reset operation has been described. However, the sensor detects that the discharge port cover 35 that has been opened is closed. Then, the notice display may be automatically turned off. Thereby, it is possible to cope with forgetting to reset the operator.

  DESCRIPTION OF SYMBOLS 1 ... Component mounting apparatus, 2 ... Main-body part, 3 ... Tape feeder, 21 ... Conveying rail, 22 ... Mounting head, 23 ... X-axis gantry, 24 ... Y-axis gantry, 25 ... Circuit board, 26 ... Nozzle changer, 27 ... Recognition camera 28 ... Distance sensor 31 ... Carrier tape 31a ... Base tape 31b ... Cover tape 32 ... Recovery roller 33 ... Cover tape container 33a ... Inlet port 33b ... Discharge port 34 ... Pull motor 35 DESCRIPTION OF SYMBOLS ... Discharge port cover, 35a ... Grasping part, 35b ... Reflecting plate, 36 ... Supporting shaft, 37 ... Supporting point part, 38 ... Leaf spring (biasing means), 41 ... Light projector (light projecting means), 42 ... Light receiver (light receiving) Means), 43 ... Calculation unit, C ... Case, H ... Conveying direction, K ... Collection direction, M ... Monitor (notification means), P ... Part suction position, S ... Set position

Claims (5)

From a tape feeder that includes a cover tape housing portion that contains a cover tape peeled off from a carrier tape, and has a discharge port for discharging the stored cover tape, and a discharge port cover that opens and closes the discharge port. A component mounting apparatus for mounting a supplied component at a predetermined position on a board,
When the discharge port cover is pushed in the opening direction from the closed state by the elastic force of the cover tape filled in the cover tape housing portion, the discharge port cover is biased in the closing direction against the elastic force. And an urging means for stopping the discharge port cover in an open state that is not fully open,
An open state detecting means for detecting, using a sensor, that the discharge port cover is in an open state in which it is not fully open;
A component mounting apparatus comprising: an informing means for notifying an operator when the open state detecting means detects that the discharge port cover is in an open state that is not fully open. The open state detecting means uses an optical sensor including a light projecting means and a light receiving means as the sensor,
When the discharge port cover is in a closed state, the discharge port cover is not disposed on the optical axis of the optical sensor, and when the discharge port cover is in an open state in which the discharge port cover is not fully opened, the optical axis of the optical sensor. The component mounting apparatus according to claim 1, wherein the discharge port cover is arranged on the top. The optical sensor is a transmissive optical sensor in which the light projecting unit and the light receiving unit are disposed to face each other with the discharge port cover interposed therebetween,
The open state detecting means determines that the discharge port cover is in an open state in which the light is not received by the light receiving means for a predetermined time when the light projected from the light projecting means is not fully opened. The component mounting apparatus according to claim 2, wherein: The optical sensor is a reflective optical sensor in which the light projecting unit and the light receiving unit are disposed on the same side with respect to the discharge port cover,
A reflecting plate is provided on a surface of the discharge port cover facing the light projecting unit and the light receiving unit,
The open state detecting means determines that the discharge port cover is in an open state in which it is not fully opened when a time during which the light receiving means receives the reflected light of the light projected from the light projecting means continues for a predetermined time. The component mounting apparatus according to claim 2, wherein: A plurality of the tape feeders are arranged in parallel in the width direction,
The open state detecting means is arranged with the light projecting means and the light receiving means so that the optical axis of the optical sensor coincides with the width direction of the tape feeder. The component mounting apparatus described.

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