JP5113693B2 - Surface mount equipment - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention is an electronic component mounting apparatus, particularly an electronic component mounting apparatus suitable for application when a component supply unit on which component supply cassettes having different heights can be mounted together is mounted on the mounting apparatus body. About.

  As an electronic component mounting apparatus that can safely supply electronic components, an apparatus main body 2 that mounts electronic components on a board as shown in FIG. Patent Document 1 discloses a device including a component supply unit 3 equipped (mounted) with a plurality of small component supply cassettes (so-called tape feeders) 31 for supplying electronic components to the apparatus main body 2.

  Inside the apparatus main body 2 of the electronic component mounting apparatus, there are mounting means 22 for mounting the electronic components supplied from the plurality of small component supply cassettes 31 on the substrate, and component supply to the mounting portion 6 of the apparatus main body 2. The mounting means 22 is moved to a movable height range due to a failure in mounting (mounting) the unit detection means 5 including, for example, an air pressure detection sensor and a component supply cassette 31 that detects whether the unit 3 is attached or detached (whether or not attached). An intrusion detection means 4 configured to detect that a part of the component supply unit 3 has intruded, for example, a transmission type sensor in which a projector and a light receiver are arranged to face each other on a component suction line is provided.

  Further, when the intrusion detection means 4 detects that the cover or the like which is a part of the component supply unit 3 is above a normal height, the electronic component mounting apparatus moves XY as shown in FIG. The control means 10 which consists of ROM11, CPU12, RAM13 etc. for stopping or decelerating the operation | movement of the mounting means 22 to be provided is provided, and, thereby, safety confirmation processing can be performed.

  In the conventional electronic component mounting apparatus having the above-described configuration, from the transmission type sensor, an abnormal state of the movable range of the mounting means 22 due to the mounting of the component supply unit 3 or the mounting failure of the component supply cassette 31 is detected. When the intrusion detection unit 4 detects that an object (foreign matter) is present, the control unit 10 can urgently stop the operation of the mounting unit 22 to ensure safety.

  Patent Document 2 discloses a technique for detecting the mounting of individual tape feeders. However, depending on this technique, an abnormal state in which foreign matter exists as in the electronic component mounting apparatus shown in FIG. It cannot be detected.

JP 2001-144499 A JP 2006-261280 A

  However, in the conventional electronic component mounting apparatus as shown in FIG. 1, when the component supply unit 3 is of a type corresponding to mounting of a large supply tray 21 for large components as shown in FIG. Because the main body of the large supply tray 21 shields the signal line indicated by the broken line in the figure, the transmissive optical sensor 4 detects it as an error.

  Therefore, when such a large supply tray 21 is used, conventionally, the operator changes the user level by, for example, requesting a serviceman from the site, and the function of the optical sensor 4 is set to OFF so that the large supply is performed. It corresponds to the use of the tray 21.

  That is, as shown in FIG. 4 which is an enlarged plan view of the main part when the component supply unit 3 is removed from the mounting part 6 of the electronic component mounting apparatus, it is arranged on the wall part facing the mounting part 6. The function of the transmissive sensor 4 including the projector 4A and the light receiver 4B provided was turned off. However, in FIG. 4, the case of FIG. 3 is shown reversed.

  Even in the case of the large-sized supply tray 21 which is originally a large-sized component supply cassette, it is desirable that the optical sensor 4 remains valid and can be used without changing the setting. This is because when the setting change by a person other than the operator is required, workability at the site is poor and labor is required.

  Since the optical sensor 4 is completely disabled, the small component supply cassette 31 for supplying chip components set in the component supply unit 3 as shown in FIG. 3 is temporarily mounted (mounted). Even if an object is present in the movable range of the mounting means 22 due to the above-described problems, it is impossible to detect the object.

  The present invention was made to solve the above-mentioned conventional problems, and even when a component supply unit capable of mounting a small component supply cassette and a large component supply cassette having a height higher than that is mounted on the mounting portion, Without detecting the large component supply cassette as a foreign object, and when there is a foreign object at a position lower than the height of the large component supply cassette above the mounted small component supply cassette, the foreign object is reliably detected. It is an object of the present invention to provide an electronic component mounting apparatus that can perform such an operation.

  According to the present invention, a component supply unit capable of mounting a small component supply cassette and a large component supply cassette having a higher height at the time of mounting is provided between the first wall portion and the second wall portion arranged to face the mounting portion. In the surface mounting apparatus that is mounted between and mounts the electronic components supplied from the respective component supply cassettes on the substrate by the mounting means, the first wall portion has a height higher than the mounting height of the small component supply cassette, The first reflective sensor for detecting a range lower than the mounting height of the large component supply cassette is provided with a first reflective surface at a corresponding position of the second wall portion, and the second wall portion includes the first reflective surface. The second reflective sensor for detecting the same range as the first reflective sensor is provided with a second reflective surface at a corresponding position of the first wall portion and mounted together with the large component supply cassette. The first reflective type A third reflective surface is disposed at a position corresponding to the first side surface facing the substrate, and a fourth reflective surface is disposed at a position corresponding to the second side surface facing the second reflective sensor. As a result, the above-described problems have been solved.

  According to the present invention, when only the small component supply cassette is mounted on the component supply unit and the large component supply cassette is not mounted together, the first and second reflective sensors and the corresponding first and second reflection sensors are provided. In combination with the surface, it can function as an intrusion detection means that reliably detects foreign matter that intrudes above the small component supply cassette as in the past, and when a large component supply cassette is mounted together, The combination of the first and second reflective sensors and the corresponding third and fourth reflective surfaces can function as an intrusion detection means above the small component supply cassette in the region excluding the large component supply cassette. As a result, it is possible to continue to mount electronic components without changing the setting such as turning off the sensor function as in the case of a conventional transmission type sensor.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 5 shows the correspondence of the sensor configuration of the mounting part 6 before mounting the component supply unit and the large supply tray (large component supply cassette) 21 provided in the electronic component mounting apparatus according to the embodiment of the present invention. It is a principal part top view equivalent to the said FIG. 4 which shows the image of a relationship. FIG. 6 shows an image in which the component supply unit 3 is mounted on the mounting unit 6.

  The electronic component mounting apparatus according to the present embodiment is substantially the same as the one shown in FIGS. 3 and 4 except for the transmissive sensors 4 (4A and 4B), and is shown in FIG. In this way, the component supply unit 3 capable of mounting the small component supply cassette 31 composed of a tape feeder and the large supply tray (large component supply cassette) 21 for supplying a large component having a higher mounting height than the above is provided in the mounting portion. 6 is mounted between the first wall portion 61 and the second wall portion 62 arranged opposite to each other, and the electronic components supplied from the component supply cassettes 21 and 31 are mounted on a substrate (not shown) by the mounting means 22. It has become.

  In the present embodiment, the one first wall portion 61 arranged opposite to the first wall portion 61 exists in a height range above the mounting height of the small component supply cassette 31 and lower than the mounting height of the large supply tray 21. A first reflective sensor 40 comprising a light emitter / receiver is disposed at a height at which foreign matter can be detected, and a first reflector (first reflective surface) is disposed at a corresponding position on the other second wall portion 62. ) 41 is provided.

  Also, the second wall portion 62 has a height that can detect a foreign object existing in the same height range as the first reflective sensor 40. Is disposed, and a second reflecting plate (second reflecting surface) 43 is disposed at a position corresponding to the first wall portion 61.

  Further, a third reflecting plate (third reflecting surface) 44 is disposed at a position corresponding to the first side surface 22 facing the first reflecting sensor 40 of the large-sized supply tray 21 mounted together with the component supplying unit 3. A fourth reflecting plate (fourth reflecting surface) 45 is disposed at a position corresponding to the second side surface 23 facing the second reflecting sensor 42.

  In the present embodiment, the first and second reflective optical sensors 40 and 42 having a configuration in which the light projector and the light receiver constituting the conventional transmission sensor shown in FIG. 4 are arranged on the same side are changed. To do. The first and second reflective optical sensors 40 and 42 used here are selected to have a function of detecting a range from 0 to a reflecting plate in consideration of the mounting area of the component supply cassette. Note that the control system applied to the present embodiment can have the same configuration as the control means 10 shown in FIG.

  In the present embodiment having the above configuration, when only the normal small component supply cassette (tape feeder) 31 is used, the first reflection is omitted as shown in FIG. The combination of the mold optical sensor 40 and the first reflecting plate 41 or the second reflecting optical sensor 42 and the second reflecting plate 43 functions as an intrusion detection means.

  On the other hand, when a large supply tray (large component supply cassette) 21 that cannot be solved conventionally is mounted (equipped) as shown in FIG. 3, it is a tape feeder mounting region as shown in FIG. The upper part of the small component supply cassette 31 provided in the range X becomes effective by the combination of the first reflective optical sensor 40 and the third reflective plate 44.

  Similarly, the optical sensor 42 can function by a combination of the second reflective optical sensor 42 and the fourth reflective plate 45 above the mounting area of the range Y.

  As described above, in the present embodiment, the first and second reflective optical sensors 40 and 42 can be effectively used in the mounting area of the ranges X and Y. When an intrusion is detected, it is possible to urgently stop the operation of the necessary mounting means by using the original intrusion detection function to ensure safety.

  Further, even if the type of the component supply unit 3 to be mounted is changed from the one shown in FIG. 1 to the one shown in FIG. 3, it is detected as an error due to an improper mounting of the component supply unit 3 to the mounting apparatus body. Since this is not done, the operator can easily cope with it.

  In addition, these functions can be realized only by a configuration in which a reflective plate is combined with a reflective sensor, so that settings for production (mounting) preparation and the like are easy and cost is advantageous.

  According to the embodiment described in detail above, the following effects can be obtained.

(1) Since it is not necessary to invalidate the optical sensor function as the intrusion detection means by changing the setting as in the prior art, settings such as production preparation can be easily performed.

(2) The conventional intrusion detection function at the time of mounting operation, which is limited by the type (mounting height) of the component supply cassette such as the large supply tray 21, can be exhibited regardless of the type of the component supply cassette. Can do.

  If it is assumed that the large supply tray 21 is used, the first and second reflective optical sensors 40 and 42 including a light projecting / receiving device on the tray 21 side, contrary to the case of FIG. The same applies to the case where a control means is provided and only the third and fourth reflectors 44 and 45 are attached to the first and second wall portions 61 and 62 of the mounting portion 6 of the mounting apparatus body so that foreign matter can be detected. An effect can be obtained. However, in this case, it is not necessary to attach the second and third reflectors 41 and 43 to the tray 21.

  Moreover, although the case where a reflecting plate is used as the first to fourth reflecting surfaces has been described in the above embodiment, when the corresponding surface is a metal, that portion may be mirror-finished.

Schematic front view showing a state in which a component supply unit is mounted on a conventional electronic component mounting apparatus The block diagram which shows the principal part of the control system of the mounting device which has intrusion detection function Schematic front view showing problems of conventional mounting equipment The principal part top view which extracts and shows the mounting part of the component supply unit with which the said mounting apparatus is equipped The principal part top view which shows the relationship between the mounting part of the components supply unit with which the mounting apparatus of one Embodiment which concerns on this invention is equipped, and a large sized supply tray The principal part top view which shows the image with which the component supply unit in which the large sized supply tray was mounted together in the mounting part shown in FIG. 5 was mounted | worn

Explanation of symbols

3 ... Parts supply unit 6 ... Mounting part 21 ... Large supply tray (Large parts supply cassette)
31 ... Small component supply cassette 40 ... First reflection type sensor 41 ... First reflection plate (first reflection surface)
42 ... second reflection type sensor 43 ... second reflection plate (second reflection surface)
44 ... Third reflector (third reflector)
45 ... 4th reflecting plate (4th reflecting surface)
61 ... 1st wall part 62 ... 2nd wall part

Claims (1)

A component supply unit capable of mounting both a small component supply cassette and a large component supply cassette having a higher height when mounted is mounted between the first wall portion and the second wall portion that are disposed opposite to the mounting portion. In a surface mounting apparatus for mounting electronic components supplied from each component supply cassette on a substrate by mounting means,
On the first wall portion, a first reflective sensor that detects a range above the mounting height of the small component supply cassette and lower than the mounting height of the large component supply cassette corresponds to a position corresponding to the second wall portion. Are each provided with a first reflecting surface,
A second reflective sensor for detecting the same range as the first reflective sensor is disposed on the second wall, and a second reflective surface is disposed at a corresponding position on the first wall. ,
The third reflective surface is located at a position corresponding to the first side surface facing the first reflective sensor of the large component supply cassette mounted side by side, and the third reflective surface is located at a position corresponding to the second side surface facing the second reflective sensor. Is a component mounting apparatus in which a fourth reflecting surface is provided.

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