JP2007109774A - Micro tray placement instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To place more micro trays on a pallet than ever before, by making effective use of a space on the pallet of a tray-type electronic component supplying apparatus. <P>SOLUTION: In the case that a micro tray 21 smaller than a tray of an ordinary size is used, a plurality of micro trays 21 each storing electronic components 23 are arrayed in a micro tray placement instrument 22. Then, the micro tray placement instrument 22 is placed on the pallet 13 of the tray-type electronic component supplying apparatus. A wall 24 for detecting the tray height which has the same height as that of the micro trays 21 placed on the micro tray placement instrument 22 is formed over the four sides of the micro tray placement instrument 22. By the detection of the wall 24 for detecting the tray height by a tray height detecting means (optical sensors 17 and 18) of the tray-type electronic component supplying apparatus, the height of the micro trays 21 is indirectly detected on the micro tray placement instrument 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a microtray mounting apparatus used for mounting a microtray having a size smaller than a normal size tray on a pallet of a tray type electronic component supply device.

  In general, a tray-type electronic component supply apparatus, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 11-121985), includes a plurality of pallets on which trays containing electronic components are placed in a magazine. Each piece is stored in the slot portion of the stage, and in the component mounting process, the desired pallet is pulled out of the magazine with the desired pallet adjusted to the height of the component supply stage by moving the magazine up and down. The electronic components in the tray on the pallet are picked up by the suction nozzle of the electronic component mounting machine and mounted on the circuit board.

Some tray-type electronic component supply devices are provided with tray height detection means such as an optical sensor for detecting the height of the tray on the pallet.
Japanese Patent Laid-Open No. 11-121985 (pages 2 to 3 etc.)

  Generally, the tray type electronic component supply apparatus is designed to use a tray having a size of 135.9 × 315.0 × 7.62 mm in accordance with the standard of JEDEC (Joint Electron Device Engineering Council). However, with the recent miniaturization of electronic components, trays (micro trays) that are considerably smaller than the normal size trays are also being used.

  This micro tray is also used by placing it on a pallet in the same way as a normal size tray, but the size of the pallet is designed to place the above normal size tray according to the JEDEC standard. The pallet is too large to place the microtray, creating a lot of wasted empty space in the pallet and limiting the number of electronic components mounted on each pallet. There is. In addition, since the tray height detection means such as the optical sensor is designed to detect the height of the normal size tray, the micro-tray, which is considerably smaller than the normal size tray, detects the tray height. There is a possibility that it will fall out of the detection area of the means, and there is a possibility that the height of the microtray cannot be detected.

  The present invention has been made in view of such circumstances. Therefore, the object of the present invention is to effectively use the space on the pallet of the tray-type electronic component supply device to mount more microtrays on the pallet than before. It is another object of the present invention to provide a microtray mounting device that can be placed and can reliably detect the height of a microtray with a tray height detecting means.

  In order to achieve the above-mentioned object, the invention according to claim 1 is configured to store a plurality of pallets on which a normal size tray for storing electronic components or a smaller size microtray is placed side by side in the vertical direction. , Equipped with tray height detecting means for detecting the height of the normal size tray or microtray on the pallet, and carrying out the pallets one by one and storing them in the normal size tray or microtray on the pallet A microtray mounting device used in a tray-type electronic component supply device for supplying components to an electronic component mounting machine, wherein the microtray mounting device is placed on the pallet in a state where a plurality of microtrays are arranged. And a tray height detecting wall having the same height as that of the micro tray can be detected by the tray height detecting means. And it is characterized in that it is formed.

  If the microtray mounting apparatus of this invention is used, the space on a pallet of a tray type | mold electronic component supply apparatus can be utilized effectively, and more microtrays can be mounted on a pallet conventionally. Moreover, in the microtray mounting device of the present invention, the tray height detection wall having the same height as the microtray is formed at a position that can be detected by the tray height detecting means of the tray type electronic component supply device. Therefore, when the pallet on which the microtray mounting device of the present invention is placed is stored in the tray-type electronic component supply device, the tray height detection means detects the tray height detection wall of the microtray mounting device, thereby The height of the microtray mounted on the microtray mounting device is indirectly detected. For this reason, even if the microtray mounted on the microtray mounting device is smaller than the normal size tray and exists at a position outside the detection area of the tray height detecting means, the information on the height of the microtray is displayed in the tray. It can be accurately acquired from the detection information of the height detection means.

  In this case, as in claim 2, the microtray mounting device may be provided with device mounting direction regulating means for regulating the placement direction of the microtray mounting device with respect to the pallet in a predetermined direction. If it does in this way, it can prevent that a worker mistakes the mounting direction of the microtray mounting apparatus with respect to a pallet beforehand, and can prevent the operational mistake in the process of mounting a microtray mounting apparatus on a pallet.

  According to a third aspect of the present invention, the microtray mounting device may be provided with microtray mounting direction regulating means for regulating the mounting direction of the microtray with respect to the microtray mounting device in a predetermined direction. In this way, it is possible to prevent an operator from mistakenly placing the microtray on the microtray mounting device, and to prevent an operation error in the process of mounting the microtray on the microtray mounting device.

  In this case, as described in claim 4, the microtray mounting direction restricting means may be provided so that the mounting direction of the microtray can be changed in units of 90 °. In this way, it becomes possible to change the mounting direction of the microtray in units of 90 ° according to the direction of the electronic component placed on the microtray, and the versatility of the microtray can be improved.

  Further, a through-hole for pushing up and removing each microtray may be formed at the mounting position of each microtray of the microtray mounting tool. If it does in this way, the operation | work which takes out a microtray from a microtray mounting instrument can be performed efficiently.

  According to a sixth aspect of the present invention, the microtray mounting device may be provided with a microtray mounting order display unit that displays the mounting order of the microtray. In this way, when mounting different electronic components for each microtray, or when mounting a smaller number of microtrays than the maximum number of devices mounted on the microtray mounting device, supplying electronic components to the electronic component mounting machine According to the order (pickup order), a plurality of microtrays can be sequentially mounted on the microtray mounting apparatus, and it is possible to prevent the microtray mounting order from being mistaken.

Hereinafter, an embodiment embodying the best mode for carrying out the present invention will be described.
First, a schematic configuration of the entire tray type electronic component supply apparatus will be described with reference to FIG.
A magazine 12 is provided in the main body box 11 of the tray type electronic component supply device so as to be movable up and down. Although not shown, the magazine 12 is moved up and down by a feed screw mechanism driven by a motor. In the magazine 12, a plurality of pallets 13 are stored one by one in a plurality of stages of slot portions (not shown), and on each pallet 13, a normal-size tray 20 (each storing electronic components) is stored. The microtray 21 (refer FIG. 2) of the size smaller than that (refer FIG. 3) or it is mounted. The main body box 11 is provided with a door 15 for opening and closing the rear opening of the magazine 12.

  In this case, two trays 20 having a normal size of, for example, 135.9 × 315.0 × 7.62 mm standardized by JEDEC are placed side by side on the pallet 13 as shown in FIG. The tray 21 is placed on the pallet 13 using a microtray mounting device 22 described later (see FIGS. 2 and 4 to 6). In the following description, the term “tray” simply means both the normal size tray 20 and the microtray 21.

  During execution of the component mounting process, the magazine 12 is moved up and down by the feed screw mechanism, and the desired pallet 13 is adjusted to the height of the component supply stage, and the desired pallet 13 is moved by the pallet taking in / out mechanism (not shown). The magazine 12 is carried out along the guide rail 16 to the component suction position, and the electronic components in the tray on the desired pallet 13 are picked up by the suction nozzle (not shown) of the electronic component mounting machine and mounted on the circuit board. To do.

  In this embodiment, two transmissive optical sensors 17 and 18 are provided at the same height position as tray height detection means for detecting the height of the tray on the pallet 13. One optical sensor 17 is installed such that the light emitting element 17a is in the main body box 11 and the light receiving element 17b is installed on the guide rail 16 so that the optical axis is horizontal. The other optical sensor 18 includes the light emitting element 18a and the light receiving element 18b. Are installed in the opposite positional relationship. This prevents the two optical sensors 17 and 18 from erroneously detecting the lights of the counterpart light receiving elements 17b and 18b.

  Further, in the two optical sensors 17 and 18, the distance between the light emitting element 17 a and the light receiving element 18 b installed in the main body box 11 is larger than the distance between the light emitting element 18 a and the light receiving element 17 b installed on the guide rail 16. It is set to be narrow (or wide), whereby the optical axes of the two optical sensors 17 and 18 are not parallel but oblique. In this way, as shown in FIGS. 2 and 3, the two optical sensors 17, 18 are located wherever the microtray mounting device 22 (or the normal size tray 20) is placed on the pallet 13. At least one optical axis of the microtray mounting device 22 (or the normal size tray 20) intersects the height of the microtray 21 mounted on the microtray mounting device 22 or the height of the normal size tray 20. While being able to detect reliably, the freedom degree of the mounting place of the micro tray mounting instrument 22 on the pallet 13 and the tray 20 of normal size can be enlarged.

Next, the structure of the microtray 21 and the microtray mounting device 22 for mounting the microtray 21 on the pallet 13 will be described with reference to FIGS.
The microtray 21 is formed in, for example, a square dish shape having a side of about 5 cm, and a large number of small electronic components 23 are arranged and accommodated in a grid pattern. The microtray mounting device 22 on which the microtray 21 is mounted is formed to have a size substantially the same as or slightly smaller than the normal size tray 20, and for example, ten microtrays 21 can be arranged in two rows and mounted. Designed to be

  On the four sides of the microtray mounting device 22, tray height detection walls 24 (see FIG. 6) having the same height as the microtray 21 mounted on the microtray mounting device 22 are formed. In this embodiment, the tray height detection walls 24 are formed on the four sides of the microtray mounting device 22, but among the four sides of the microtray mounting device 22, an optical sensor that is a tray height detection means. The tray height detection wall 24 may be formed only on two sides or one side crossing the optical axes 17 and 18. In short, it is not necessary to form the tray height detection wall 24 at a location that does not intersect the optical axis of the optical sensors 17 and 18.

  In addition, partitioning ribs 25 and 26 for partitioning the mounting space of each microtray 21 are formed in the microtray mounting device 22, and microscopic trays are mounted at four corners of the mounting space of each microtray 21. A pin fitting hole 28 for fitting the tray loading direction regulating pin 27 (microtray loading direction regulating means) is formed. As shown in FIG. 5, a cut portion 35 for avoiding interference with the microtray mounting direction regulating pin 27 is formed only at one of the four corners of each microtray 21. Yes.

  In this case, the microtray mounting direction restricting pin 27 is fitted into any one of the pin fitting holes 28 at the four corners of the mounting space of each microtray 21 so that the microtray mounting direction restricting pin 27 is fitted. The mounting direction of the microtray 21 with respect to the tray mounting device 22 is regulated in a direction in which the cut portion 35 of the microtray 21 faces the microtray mounting direction regulating pin 27. In other words, at the three corners where the cut portion 35 of the microtray 21 is not formed, even if any of the corners faces the direction of the microtray mounting direction regulating pin 27, the corner is restricted by the microtray mounting direction. The mounting of the microtray 21 is prevented by interfering with the pins 27. In this case, since the pin fitting hole 28 is formed at the four corners of the mounting space of each microtray 21, the pin fitting hole 28 for fitting the microtray mounting direction regulating pin 27 is changed. Thus, the mounting direction of the microtray 21 can be changed in units of 90 °.

  In addition, in the mounting space of each microtray 21 of the microtray mounting device 22, a through hole 29 for an operator to push up and take out the microtray 21 from the lower surface side of the microtray mounting device 22 with a finger or a tool or the like. Is formed. Further, in the vicinity of the mounting space of each microtray 21 in the microtray mounting device 22, there is a microtray mounting order display unit 30 that displays the mounting order of the microtray 21 with numbers “1” to “10”, for example. Is provided.

  In addition, an instrument mounting direction restricting recess 31 is formed at a predetermined position of the micro tray mounting instrument 22 as instrument mounting direction restricting means for restricting the placement direction of the micro tray mounting instrument 22 on the pallet 13 in a predetermined direction. Correspondingly, at a predetermined position of the pallet 13, a convex portion 32 that fits into the instrument mounting direction restricting recess 31 of the microtray mounting instrument 22 is provided. The mounting direction of the microtray mounting device 22 with respect to the pallet 13 is regulated in a predetermined direction by the fitting. In the present embodiment, the convex portion 32 is formed of a permanent magnet, and the microtray mounting device 22 is formed of a magnetic material such as iron, whereby the mounting direction of the microtray mounting device 22 is regulated by the convex portion 32 in a predetermined direction. However, the microtray mounting device 22 is attracted and held by magnetic force.

  The concave / convex relationship between the concave portion 31 and the convex portion 32 is reversed, and a convex portion is formed on the microtray mounting device 22 and a concave portion is formed on the pallet 13. You may make it regulate in a predetermined direction.

  The pallet 13 is provided with L-shaped positioning ribs 33 and 34 for positioning the mounting position of the microtray mounting device 22 whose mounting direction is regulated by the convex portion 32 in the front-rear and left-right directions (XY directions). It has been.

  In the present embodiment described above, when the microtray 21 smaller than the normal size tray 20 is used, the plurality of microtrays 21 are mounted on the microtray mounting device 22 in, for example, two rows, and the microtray mounting device 22 is mounted. Is placed on the pallet 13. Thereby, more micro trays 21 can be placed on the pallet 22 than in the past by effectively using the space on the pallet 13.

  In addition, in the microtray mounting device 22 of the present embodiment, the tray height detection wall 24 having the same height as the microtray 21 has an optical sensor 17 serving as a tray height detection means of the tray type electronic component supply device. 18 is formed at a position (a position intersecting the optical axis of the optical sensors 17 and 18) that can be detected by the pallet 13. When the pallet 13 on which the microtray mounting device 22 is placed is stored in the tray-type electronic component supply device, The optical sensor 17, 18 detects the tray height detection wall 24 of the microtray mounting device 22, thereby indirectly detecting the height of the microtray 21 mounted on the microtray mounting device 22. The For this reason, even if the microtray 21 mounted on the microtray mounting device 22 is smaller than the normal size tray 20 and exists at a position outside the detection area of the photosensors 17 and 18, the height of the microtray 21. Can be accurately obtained from the detection information of the optical sensors 17 and 18.

  Further, in this embodiment, the microtray mounting instrument 22 is provided with an instrument mounting direction regulating recess 31 (appliance mounting direction regulating means) that regulates the mounting direction of the microtray mounting instrument 22 with respect to the pallet 13 in a predetermined direction. Therefore, it is possible to prevent an operator from mistakenly placing the microtray mounting device 22 on the pallet 13 in the wrong direction, and to prevent an operation error in the process of placing the microtray mounting device 22 on the pallet 13.

  Further, in this embodiment, the microtray mounting device 22 is provided with the microtray mounting direction regulating pin 27 that regulates the mounting direction of the microtray 21 with respect to the microtray mounting device 22 in a predetermined direction. It is possible to prevent a mistake in the mounting direction of the microtray 21 with respect to the tray mounting device 22, and it is possible to prevent an operation error in the process of mounting the microtray 21 on the microtray mounting device 22.

  In addition, in the present embodiment, since the pin fitting hole 28 for fitting the microtray mounting direction regulating pin 27 is formed at the four corners of the microtray mounting device 22, the microtray mounting direction regulating pin 27. By changing the pin fitting hole 28 for fitting the microtray 21, the mounting direction of the microtray 21 can be changed in units of 90 ° according to the direction of the electronic component 23 placed on the microtray 21. The versatility of can be improved.

  In the present embodiment, since the through holes 29 for pushing up and taking out each micro tray 21 are formed in the mounting space of each micro tray 21 of the micro tray mounting tool 22, The operation of taking out the tray 21 can be performed efficiently.

  In this embodiment, since the microtray mounting device 22 is provided with the microtray mounting order display unit 30 for displaying the mounting order of the microtray 21, a different electronic component 23 is mounted for each microtray 21. In addition, when mounting a smaller number of microtrays 21 than the maximum number mounted on the microtray mounting device 22, the plurality of microtrays 21 are sequentially arranged in accordance with the supply sequence (pickup sequence) of the electronic components 23 to the electronic component mounting machine. It can be mounted on the microtray mounting device 22, and it is possible to prevent the mounting order of the microtray 21 from being wrong.

  In this embodiment, the transmissive optical sensors 17 and 18 are provided as the tray height detecting means. However, a reflective optical sensor may be used. In this case, the tray height detecting wall 24 is used. What is necessary is just to comprise so that the surface (surface which the irradiation light of an optical sensor hits) may become a light reflection surface.

In addition, the tray height detection means is not limited to the optical sensor, and may be constituted by other sensors such as an ultrasonic sensor.
In this embodiment, the microtray 21 is mounted in two rows on the microtray mounting device 22. However, the microtray 21 can be mounted in one row or three or more rows. The number of trays 21 may be changed as appropriate.

1 is a perspective view of a tray type electronic component supply apparatus showing an embodiment of the present invention. It is a top view which shows the state which mounted the micro tray mounting instrument on the pallet. It is a top view of a pallet. It is a top view which shows the state which mounted one microtray in the microtray mounting instrument. It is a partial enlarged plan view which shows the state which mounted the micro tray in the micro tray mounting instrument. It is a longitudinal cross-sectional view of a microtray mounting instrument.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Main body box, 12 ... Magazine, 13 ... Pallet, 14 ... Tray, 15 ... Door, 16 ... Guide rail, 7, 18 ... Optical sensor (tray height detection means), 17a, 18a ... Light emitting element, 17b, 18b DESCRIPTION OF SYMBOLS ... Light receiving element, 20 ... Normal size tray, 21 ... Micro tray, 22 ... Micro tray mounting instrument, 23 ... Electronic component, 24 ... Tray height detection wall, 25, 26 ... Partition rib, 27 ... Micro tray mounting direction Restriction pin (microtray mounting direction restricting means), 28 ... pin fitting hole, 29 ... through hole, 30 ... microtray mounting order display part, 31 ... instrument mounting direction restricting recess (instrument mounting direction restricting means), 32 ... convex Part

Claims (6)

A plurality of pallets on which normal size trays or smaller size micro trays for storing electronic components are placed are stored side by side in the vertical direction, and the height of the normal size trays or micro trays on the pallets is set. A tray-type electronic component supply device that includes tray height detection means for detecting, carries out the pallets one by one, and supplies electronic components accommodated in a normal-size tray or microtray on the pallet to an electronic component mounting machine A microtray-equipped instrument to be used,
The microtray mounting device is formed so as to be placed on the pallet in a state where a plurality of microtrays are arranged, and a tray height detection wall having the same height as the microtray has a tray height. A microtray-equipped instrument, which is formed at a position detectable by a detection means.   2. The microtray mounting device according to claim 1, further comprising device mounting direction regulating means for regulating a mounting direction of the microtray mounting device with respect to the pallet in a predetermined direction.   The microtray mounting device according to claim 1 or 2, further comprising a microtray mounting direction regulating means for regulating a mounting direction of the microtray with respect to the microtray mounting device in a predetermined direction.   The microtray mounting direction regulating means is provided so that the mounting direction of the microtray can be changed in units of 90 °.   The microtray mounting device according to any one of claims 1 to 4, wherein a through hole for pushing up and taking out each microtray is formed at a mounting position of each microtray.   The microtray mounting apparatus according to any one of claims 1 to 5, further comprising a microtray mounting order display unit that displays a mounting order of the microtray.

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