JP2008288533A - Pallet exchange system and pallet exchange method for tray-type electronic-component supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently execute exchange of a component-shortage pallet of a tray-type electronic-component supply device. <P>SOLUTION: Normally, a sub-magazine 13 is stopped at a lower-limit position. A pallet 15, on which an electronic component requested by the electronic-component mounting machine side is loaded, is extracted from a main magazine 12 onto a pallet extraction table 28 so as to supply the electronic component to the electronic-component mounting machine. When the pallet 15 is in a component-shortage state, the main magazine 12 is elevated to an upper-limit position so as to recover the component-shortage pallet 15 into an empty slot 16 of the sub-magazine 13 by elevating the sub-magazine 13 to a work region. Then, a pallet 15, on which the same kind of electronic component as the electronic component that runs short is loaded, is extracted from the sub-magazine 13 onto the pallet extraction table 28 so as to continue component supply. After that, when it is switched to the electronic component of the other pallet 15, the pallet 15 extracted from the sub-magazine 13 is recovered into its original slot of the main magazine 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pallet replacement system and a pallet replacement method for a tray-type electronic component supply apparatus provided with two magazines for storing pallets loaded with electronic components.

  In the tray-type electronic component supply device, as described in Patent Document 1 (Japanese Patent Laid-Open No. 3-206695), the electronic component mounter is in operation (during component supply operation of the tray-type electronic component supply device). In order to be able to replenish electronic components that have run out without stopping the tray-type electronic component supply device, two magazines that can be moved up and down independently are arranged up and down, While the mounting machine is operating, move one magazine up and down, pull out the pallet from one of the slots in the one magazine, and pick up the electronic components on the pallet with the suction nozzle of the electronic component mounting machine. The operation of mounting on the board is repeated, and when the pallet runs out of parts, the one magazine is retracted to one retracted position and stopped. Then, the other magazine that has been stopped at the other retreat position is moved up and down in the work area, the pallet is pulled out from the other magazine, and the component supply to the electronic component mounting machine is continued. Some magazines, which are stopped at the retreat position, are opened and the pallet with parts cut out is pulled out and replaced with a new pallet loaded with the same kind of electronic parts.

Further, as described in Patent Document 2 (Japanese Patent Laid-Open No. 2000-307291), one of the two magazines is a main magazine used for supplying components to an electronic component mounting machine, The other magazine is used as a spare magazine, and in addition to these two magazines, a replenishment section is provided for replenishing electronic parts to a pallet that is out of parts, and the pallet A drawn from one of the slots in the main magazine is out of parts. When the pallet A is out of the spare parts, the pallet A is replenished with electronic parts, and the pallet B loaded with electronic parts of the same type as the electronic parts out of the spare magazine is loaded. Pull out and supply the electronic component to the electronic component mounting machine, and the pallet A supplied with the electronic component by the replenishing unit is replaced with the pallet of the spare magazine. There is a thing that was to house to have been pulled out slot.
Japanese Patent Laid-Open No. 3-206695 JP 2000-307291 A

  However, in the above-mentioned Patent Document 1, when one of the pallets stored in one magazine runs out of parts, the magazine used for component supply to the electronic component mounting machine is switched. The magazine is switched while the pallet is overused. For this reason, managing the number of remaining parts of each pallet stored in the magazine is troublesome, and the magazine is frequently switched while the electronic component mounting machine is in operation, and the production efficiency is reduced by the time required for the switching. There is a drawback of doing.

  On the other hand, the above-mentioned Patent Document 2 has a configuration in which a replenishing unit for replenishing electronic components is provided on a pallet that is out of components, apart from the two magazines, and thus the entire apparatus is increased in size and cost, resulting in compactness and low cost. It cannot meet the demand for cost.

  The present invention has been made in view of such circumstances. Accordingly, an object of the present invention is to provide a tray that can efficiently replace a pallet that is out of parts while satisfying the demand for compactness and cost reduction. It is to provide a pallet replacement system and a pallet replacement method for a mold electronic component supply apparatus.

  In order to achieve the above object, the inventions according to claims 1 and 9 are arranged such that two magazines configured to be able to be moved up and down independently are arranged one above the other, and an electronic component is provided in a plurality of slots provided in each magazine. A tray-type electronic component supply device that stores a pallet loaded with pallets, and controls the lifting and lowering operations of the two magazines and the loading and unloading operations of the pallets from each magazine, thereby switching the pallets between the two magazines. One of the two magazines is a main magazine mainly used for supplying electronic components to the electronic component mounting machine, and one of the pallets of the main magazine is out of components. Each sub-magazine is used to replace a pallet that is out of parts, and at least one of the sub-magazines. The empty slot that does not store the pallet loaded with electronic parts, and when the pallet drawn from one of the slots of the main magazine is out of parts, the pallet with the parts out of the sub-magazine A new pallet loaded with electronic components of the same type as the electronic component that has been cut out is pulled out from the sub-magazine and the electronic component is supplied to the electronic component mounting machine. Is collected in the slot in which the pallet with the parts cut out of the main magazine is stored.

  In the present invention, when a part supply operation is performed on the sub-magazine side when a part breakage occurs, the pallet is not immediately replaced, and production by other parts is continued. The pallet may be replaced after the parts replenishment work is completed.

  In addition, even if a new pallet is pulled out from the sub magazine, if the same parts are not used continuously, the parts are not supplied to the electronic component mounting machine, and the pallet is placed between the sub magazine and the main magazine. Only replacement may be performed.

  In the present invention, at least one slot of the sub-magazine is set as an empty slot, and the pallet that is out of parts of the main magazine is collected in the empty slot of the sub-magazine, and electronic parts of the same type as electronic parts that are out of parts from the sub-magazine Since a new loaded pallet is pulled out and electronic components are supplied to the electronic component mounting machine, there is no need to provide a replenishment section as in the above-mentioned Patent Document 2, and it is easy to provide only two conventional magazines. With a simple configuration, it is possible to efficiently replace a pallet that is out of parts without switching the magazine used to supply the parts to the electronic component mounting machine, while meeting the demands for compactness and cost reduction. Productivity can be improved.

  In this case, as in claim 2, in each slot other than the empty slot of the sub magazine, a pallet loaded with electronic parts of the same type as the electronic parts of the pallet stored in each slot of the main magazine is the same as the main magazine. It may be stored in order, and the type of electronic component of the pallet stored in the slot may be identified from the position of the slot of the sub magazine. This eliminates the need for the operator to input information on the type of electronic component to the control means.

  Further, any of the plurality of slots of the sub magazine may be an empty slot. However, as described in claim 3, when the slot closest to the main magazine among the plurality of slots of the sub magazine is set as an empty slot. good. In this way, when collecting the pallet with the main magazine out of parts into the empty slot of the submagazine, the vertical movement distance of the submagazine can be made the shortest distance, and the pallet with the parts out of the submagazine The operation of collecting in empty slots can be performed efficiently.

  According to another aspect of the present invention, the sub-magazine does not fix the position of the empty slot, and uses the empty slot from which the pallet is pulled out as an empty slot, and collects the pallet with the parts out in this slot. Anyway.

  In this case, as in claim 5, a display unit for displaying the position of the slot in which the pallet with parts cut is stored may be provided. In this way, even if the position of the slot in which the component-cutting pallet is stored changes during the operation of the electronic component mounting machine, the operator can change the position of the slot in which the component-cutting pallet is stored according to the display information on the display unit. The position can be known accurately, and the parts replenishment work can be easily performed.

  According to another aspect of the present invention, there is provided input means for inputting information on electronic parts of the pallet in association with the position of the slot when the operator stores the pallet in one of the slots of the main magazine and the sub magazine. The type of electronic component of the pallet stored in the slot may be identified based on the information input by the input means. This has the advantage that the operator can freely select the slot for storing the pallet and the type of electronic component.

  According to another aspect of the present invention, each pallet is provided with a transmission unit that transmits an identification signal for identifying the loaded electronic component and / or pallet, and is transmitted from the transmission unit of the pallet stored in each slot. A pallet and / or electronic component stored in each slot may be identified based on the identification signal that is received, and a slot to which no identification signal is transmitted may be determined as an empty slot. In this way, the type of electronic component and the position of the empty slot in the pallet stored in each slot are automatically set without the operator inputting information on the type of electronic component or the position of the empty slot. Can be identified.

  Generally, a tray type electronic component supply apparatus is configured to stack a tray containing electronic components on a pallet. However, the number of trays stacked on the pallet is not limited to one, and the components of the pallet In order to increase the loading capacity, stack multiple trays on the pallet, supply electronic components from the uppermost tray to the electronic component mounting machine, and when the uppermost tray is out of parts, There is an apparatus in which the uppermost tray is automatically discharged to supply electronic components in the next (next uppermost) tray.

  With this configuration, the pallet component loading quantity varies depending on the number of trays stacked. Therefore, the tray stacking height is detected by the stacking height detection means, and the number of stacks is calculated from the stacking height. It calculates and manages the pallet component loading quantity. In the conventional case, when the magazine door is opened and a pallet is inserted or removed from any slot, the controller does not know which slot pallet is inserted or removed. The tray stacking height is detected again for the pallet in the slot, and the production efficiency is reduced by the time required for the detection operation.

  Therefore, in a system in which an identification signal transmission unit is provided for each pallet, the pallet insertion / extraction of each slot is monitored based on the presence / absence of an identification signal transmitted from the pallet transmission unit of each slot. When a pallet in one of the slots is detected, the stacking height detection means detects the tray stacking height only for the pallet in the slot that was inserted or removed, and for the pallet in the other slot the previous time. It is preferable to use the detected value of the stacked height as it is. In this way, it is possible to reduce the time required for detecting the stacking height of trays after inserting / removing pallets, and the production efficiency can be improved accordingly.

  Hereinafter, two Examples 1 and 2, which embody the best mode for carrying out the present invention, will be described.

A first embodiment of the present invention will be described with reference to FIGS.
First, the configuration of the tray-type electronic component supply apparatus according to the first embodiment will be described with reference to FIGS. Here, FIG. 1 is a view of the elevating mechanism of the main magazine 12 and the sub magazine 13 inside the tray type electronic component supply apparatus as viewed from the front, FIG. 2 is a view of the elevating mechanism as viewed from the side, and FIG. 4 is a front view of the component supply device, FIG. 4 is a side view of the tray type electronic component supply device, and FIG. 5 is a cross-sectional view of the sub magazine 13 portion of the tray type electronic component supply device.

  Inside the main body box 11 of the tray-type electronic component supply apparatus, two magazines 12 and 13 configured to be able to move up and down independently are arranged up and down, and are provided in each magazine 12 and 13 as shown in FIG. A plurality of pallets 15 in which trays 14 containing electronic components are stacked in one or a plurality of stages are stored in the plurality of slots.

  In the first embodiment, the upper magazine 12 is a main magazine 12 mainly used for supplying electronic components to the electronic component mounting machine, and the lower magazine 13 is a pallet drawn from any slot of the main magazine 12. The sub magazine 13 is used to replace the pallet 15 that is out of parts each time the part 15 is out of parts. On the contrary, the lower magazine 13 may be the main magazine and the upper magazine 12 may be the sub-magazine.

  In the first embodiment, the main magazine 12 and the sub magazine 13 have the same number of slots, but the number of slots in the sub magazine 13 may be larger than the number of slots in the main magazine 12. This is because at least one slot of the sub-magazine 13 is an empty slot 16 that does not store the pallet 15 loaded with electronic components. In the first embodiment, the empty slot 16 (see FIG. 4) is the uppermost slot closest to the main magazine 12 among the plurality of slots of the sub magazine 13.

  Next, a mechanism for raising and lowering the main magazine 12 and the sub magazine 13 independently will be described. Two feed screws 21L, 21R, 22L, 22R (see FIG. 5) are provided in the vertical direction on each of the left and right sides of the main body box 11 of the tray-type electronic component supply device, and the main magazine 12 and the sub magazine 13 are independent. Thus, two sets of feed screw mechanisms that are moved up and down are configured.

  The main magazine 12 is supported by screwing nuts 23L and 23R fixed to the left and right sides of the left and right feed screws 21L and 21R. The left and right feed screws 21L and 21R are supported by the first motor. The main magazine 12 is raised or lowered by being rotated synchronously in the forward direction or the reverse direction by a first rotation transmission mechanism (not shown) using a drive source (not shown) as a drive source.

  On the other hand, the sub-magazine 13 is supported by screwing nuts 24L and 24R fixed on the left and right sides thereof to the two left and right feed screws 22L and 22R, and a second motor (not shown) is driven as a drive source. The sub magazine 13 is raised or lowered by rotating the two left and right feed screws 22L and 22R in synchronization with the forward or reverse direction by a second rotation transmission mechanism (not shown).

  As shown in FIG. 3, doors 25 and 26 are respectively provided at the upper and lower portions of the front surface of the main body box 11, and when the pallet 15 is taken in and out of each slot of the main magazine 12, the upper door 25 is opened, When the pallet 15 is put in and out of each slot of the sub magazine 13, the lower door 26 is opened. An operation input unit 27 having various operation buttons and the like is provided on the front surface of the main body box 11. A pallet drawing table 28 (see FIG. 4) for moving the pallet 15 drawn from the main magazine 12 or the sub magazine 13 to the component suction station of the electronic component mounting machine is provided near the center of the rear surface of the main body box 11.

  Next, the configuration of the stacking height detecting means for detecting the stacking height of the trays 14 on the pallets 15 stored in the magazines 12 and 13 will be described with reference to FIGS. This stacking height detection means has the same configuration on the main magazine 12 side and the sub magazine 13 side. As shown in FIG. 5, each stacked height detection means includes two transmissive optical sensors 31 and 32, and light emitting elements 31 a and 32 a and light receiving elements 31 b and 32 b that constitute the optical sensors 31 and 32. Is installed at the same height position on the front side and the rear side of the main body box 11 so that the optical axis is horizontal.

  When detecting the stacking height of the tray 14 on the pallet 15, the magazines 12 and 13 are moved up and down by a feed screw mechanism to monitor the output signals of the two optical sensors 31 and 32. The position at which one of the output signals 31 and 32 is switched from the on state to the off state (or from the off state to the on state) is detected as the upper end position of the uppermost tray 14. Specifically, the height position of the pallet 13 is detected based on the count value of the output pulse of an encoder (not shown) that detects the rotation angle of the motor of the feed screw mechanism, and the uppermost stage is detected by the optical sensors 31 and 32. When the upper end position of the tray 14 is detected (hereinafter referred to as “when the uppermost tray upper end is detected”), the stacking height of the tray 14 is detected based on the count value of the output pulse of the encoder at that time. Based on the height, the number of trays 14 stacked on the pallet 15 is calculated.

  As described above, in the first embodiment, among the plurality of slots of the sub magazine 13, the uppermost slot closest to the main magazine 12 is set as the empty slot 16. The pallets 15 loaded with electronic parts of the same type as the electronic parts of the pallets 15 housed in the slots of the main magazine 12 are placed in the same order as the main magazine 12 in the slots other than the empty slots 16 of the sub magazine 13 in advance. Keep it in place. As a result, the control device (control means) of the electronic component mounting machine and / or the control device (control means) of the tray type electronic component supply device can control the pallet 16 stored in the slot from the position of the slot of the sub magazine 13. The type of electronic component is identified.

  While the electronic component mounting machine is in operation, the sub magazine 13 is stopped at the lower limit position (retracted position) of the raising / lowering range, and the main magazine 12 is moved up and down in the work area by the feed screw mechanism, from the electronic component mounting machine side. The pallet 15 on which the requested electronic component is loaded is aligned with the pallet take-in / out position of the pallet draw-out table 28, and the pallet 15 is pulled out from the main magazine 12 onto the pallet pull-out table 28 by the pallet take-out / drawing mechanism (not shown). The electronic component in the uppermost tray 14 on the pallet 15 is picked up by a suction nozzle (not shown) and mounted on the circuit board, and the uppermost tray 14 is moved to the component adsorption station of the component mounting machine. When the parts run out, the uppermost tray 14 is automatically ejected, and the next stage (next uppermost) tray is automatically ejected. The electronic components in Lee 14 mounted on the circuit board to pick up by the suction nozzle.

  Thereafter, when switching the electronic component to be mounted on the circuit board to the electronic component of another pallet 15, if the electronic component remains in the tray 14 of the pallet 15 currently drawn on the pallet drawing table 28, The pallet 15 is returned to the original slot of the main magazine 12, and the pallet 15 loaded with electronic components requested from the electronic component mounting machine side is pulled out from the main magazine 12 onto the pallet drawing table 28.

  After that, when all the electronic components in the lowermost tray 14 on the pallet 15 drawn on the pallet drawing table 28 have disappeared and the components have run out, the main magazine 12 is moved to the upper limit position (retracting position) of its lifting range. ) And the sub magazine 13 is raised from the lower limit position of the raising / lowering range to the work area so that the uppermost empty slot 16 of the sub magazine 13 is aligned with the pallet take-in / out position of the pallet drawing table 28. The pallet 15 that is out of parts on the drawing table 28 is collected in the empty slot 16 at the uppermost stage of the sub magazine 13. Thereafter, a new pallet 15 loaded with electronic components of the same type as the electronic components that have been cut from the sub-magazine 13 is pulled out onto the pallet drawing table 28, and the supply of the electronic components to the electronic component mounting machine is continued.

  Thereafter, the sub magazine 13 is lowered to the lower limit position of the raising / lowering range and stopped, and the main magazine 12 is lowered from the upper limit position of the raising / lowering range to the work area. The slot which is pulled out and is vacant is brought into a state where it is matched with the pallet loading / unloading position of the pallet drawing table. Thereafter, when the electronic component to be supplied to the electronic component mounting machine is switched to the electronic component of another pallet 15, the pallet 15 pulled out from the sub-magazine 13 is stored in the original slot of the main magazine 12 (the component-cut pallet 15 is stored. To the slot).

  As described above, when the pallet 15 that is out of parts is collected in the empty slot 16 at the uppermost stage of the sub-magazine 13, the operator can move the sub-magazine during the period when the sub-magazine 13 is stopped at the lower limit position of the raising / lowering range. The door 26 on the 13th side is opened, and the pallet 15 that is out of parts is pulled out from the submagazine 13, and electronic components of the same type as the electronic components on the pallet 15 transferred from the submagazine 13 side to the main magazine 12 side are loaded. A new pallet 15 is supplied to the corresponding slot of the sub magazine 13.

  The pallet 15 replacement control of the first embodiment described above is performed by the pallet replacement control program of FIG. 6 by the control device (control means) of the electronic component mounting machine and / or the control device (control means) of the tray type electronic component supply device. Is executed as follows.

  In the pallet replacement control program of FIG. 6, first, in step 101, a normal pallet 15 loaded with electronic components requested from the electronic component mounting machine side is pulled out from the main magazine 12 and the electronic components are supplied to the electronic component mounting machine. Execute component supply control. Thereafter, the process proceeds to step 102, in which it is determined whether or not the pallet 15 drawn on the pallet drawing table 28 has run out of parts. If the parts have not run out, normal parts supply control is continued.

  Thereafter, when the parts are out of operation, the process proceeds to step 103, where the main magazine 12 is raised to the upper limit position (retracted position) of the elevation range and stopped. Then, in the next step 104, the sub magazine 13 is raised from the lower limit position (retracted position) of the ascending / descending range to the work area, and the uppermost empty slot 16 of the sub magazine 13 is aligned with the pallet loading / unloading position of the pallet drawing table 28. . Thereafter, the process proceeds to step 105, and the pallet 15 whose parts are cut off on the pallet drawing table 28 is collected in the uppermost empty slot 16 of the sub magazine 13.

  Thereafter, the process proceeds to step 106, where a new pallet 15 loaded with electronic parts of the same type as the electronic parts that have been cut from the sub-magazine 13 is pulled out onto the pallet drawing table 28 to be sent to the electronic component mounting machine. Continue to supply Thereafter, the process proceeds to step 107, where the sub magazine 13 is lowered to the lower limit position of the raising / lowering range and stopped, and in the next step 108, the main magazine 12 is lowered from the upper limit position of the raising / lowering range to the work area. The pallet 15 of the electronic component that has been cut out is pulled out and the vacant slot is brought into a state where it is aligned with the pallet loading / unloading position of the pallet drawing table 28.

  Thereafter, the process proceeds to step 109, and when the electronic component to be supplied to the electronic component mounting machine is switched to the electronic component of another pallet 15, the pallet 15 drawn from the sub magazine 13 is replaced with the original slot (part of the main magazine 12). Collected in the slot in which the out-of-stock pallet 15 was stored. Thereafter, the processes of steps 101 to 109 described above are repeated.

  In the present invention, when a part supply operation is performed on the sub-magazine 13 side when the part has run out, the pallet 15 is not immediately replaced, and production by other parts is continued. The pallet 15 may be replaced after the parts supply operation on the magazine 13 side is completed.

  In addition, even if a new pallet 15 is pulled out from the sub magazine 15 and the same parts are not used continuously, the parts are not supplied to the electronic component mounting machine, and the sub magazine 13 and the main magazine 12 are not supplied. Only the pallet 15 may be exchanged between them.

  According to the first embodiment described above, one slot 16 of the submagazine 13 is set as an empty slot 16, and a pallet with parts cut out of the main magazine 12 is collected in the empty slot 16 of the submagazine 13, and from the submagazine 13. Since a new pallet 15 loaded with electronic components of the same type as the electronic components that have run out of components is pulled out and the electronic components are supplied to the electronic component mounting machine, it is necessary to provide a replenishment section as described in Patent Document 2 above. Efficient replacement of the pallet 15 with no components without switching the magazines 12 and 13 used for supplying components to the electronic component mounting machine with a simple configuration in which only two conventional magazines are provided. It can be performed well, and productivity can be improved while satisfying the demand for compactness and low cost.

  Moreover, in the first embodiment, a pallet 15 in which electronic parts of the same type as the electronic parts of the pallet 15 housed in each slot of the main magazine 12 are loaded in each slot other than the empty slot 16 of the sub magazine 13 is stored in the main magazine. 12, and the type of the electronic component of the pallet 15 accommodated in the slot is identified from the position of the slot of the sub magazine 13. This eliminates the need to input the information in the, thus improving workability.

  Further, in the first embodiment, among the plurality of slots of the sub magazine 13, the uppermost slot closest to the main magazine 12 is set as the empty slot 16. When collecting in the empty slot 16 of the magazine 13, the movement distance in the vertical direction of the sub magazine 13 can be set to the shortest distance, and the operation of recovering the pallet 15 with the parts out to the empty slot 16 of the sub magazine 13 can be performed efficiently. It can be carried out.

  However, in the present invention, the position of the empty slot 16 of the sub-magazine 13 is not limited to the uppermost slot, but may be a slot of another stage, and two or more slots may be empty slots. .

  Alternatively, the position of the empty slot 16 may not be fixed, and the empty pallet 15 may be used as a vacant slot from which the pallet 15 is pulled out, and the pallet 15 with a broken part may be collected in this slot.

  In addition, a display unit that displays the position of the slot in which the pallet 15 that is out of parts is stored may be provided. In this way, even if the position of the slot in which the component-cut pallet is stored changes during operation of the electronic component mounting machine, the operator can change the slot in which the component-cut pallet is stored according to the display information on the display unit. Therefore, the parts replenishment work can be easily performed.

  This display unit is provided with a light emitting element such as an LED for displaying the presence / absence of a part 15 pallet 15 for each slot, and the position of the slot in which the part pallet is stored by turning on / off the light emitting element in each slot. A display panel such as a liquid crystal panel that displays the position of the slot in which the pallet containing the parts is stored may be displayed by digital display, picture display, or the like.

  In addition, when the operator stores the pallet 15 in one of the slots of the main magazine 12 and the sub magazine 13, the operation input unit 27 serves as input means for inputting information on the electronic components of the pallet 15 in association with the position of the slot. May be used to identify the type of electronic component of the pallet 15 housed in the slot based on the information input by the operation input unit 27. This has the advantage that the operator can freely select the slot for storing the pallet 15 and the type of electronic component.

  In the second embodiment of the present invention shown in FIGS. 7 and 8, identification information (ID) for identifying electronic components and / or pallets 15 loaded at the front ends of the pallets 15 stored in the main magazine 12 and the sub-magazine 13. An RFID tag 41 (transmitting unit) that wirelessly transmits the signal is attached, and a barcode label (not shown) in which identification information (ID) is recorded is attached to a predetermined position of each pallet 15. The identification information of the barcode label and the identification information of the RFID tag 41 are associated in advance. The identification information of the bar code label is read by a bar code reader (not shown) and inputted to the control device of the electronic component mounting machine and / or the control device of the tray type electronic component supply device.

  An RFID reading antenna 42 is attached to the RFID tag of each pallet 15 at the retracted position (upper limit position) of the main magazine 12 and the retracted position (lower limit position) of the sub magazine 13 in the main body box 11 of the tray type electronic component supply device. It is provided for each slot so as to face 41. As a result, when the magazines 12 and 13 are stopped at the retracted positions, the identification information of the RFID tags 41 of the pallets 15 housed in the slots is read by the antennas 42 to control the electronic component mounting machine and / or Alternatively, an electronic component and / or pallet 15 loaded on each pallet 15 is identified by the control device by inputting it to the control device of the tray-type electronic component supply device.

  In this way, even if the operator does not input information on the electronic parts and / or the pallet 15 and information on the positions of the empty slots 16 to the control device, the electronic parts and / or the pallets 15 stored in the slots are stored. Alternatively, the type of the pallet 15 and the position of the empty slot 16 can be automatically identified.

  In this case, a writable RFID tag 41 may be used, and the type information of the electronic component may be written in the RFID tag 41 when the electronic component is set on the pallet 15.

  Alternatively, the identification information (ID) unique to each pallet 15 is only recorded on the RFID tag 41, and the identification information (ID) and the type information of the electronic component set on the pallet 15 are stored on the control device side. By associating it on the database, the electronic component type information may be acquired via the identification information (ID) of the pallet 15.

  Also in the second embodiment, as described in the first embodiment, the stacked heights of the trays 14 on the pallets 15 stored in the magazines 12 and 13 are detected by the optical sensors 31 and 32 (the stacked height detection). And the number of stacked parts is calculated from the height of the stacked parts, and the component loading quantity of the pallet 15 is managed. In the conventional device, when the doors 25 and 26 are opened and the pallet 15 is inserted / removed from any of the slots, it is unknown on the control device side which pallet 15 is inserted / removed. After the insertion / extraction, the stacking heights of the trays 14 are detected again for the pallets 15 of all slots, and the production efficiency is reduced by the time required for the detection operation.

  Therefore, in the second embodiment, the insertion / removal of the pallet 15 in each slot is monitored based on the presence / absence of the signal of the RFID tag 41 of the pallet 15 in each slot, and when the insertion / removal of the pallet 15 in any slot is detected. The stacking height of the tray 14 is detected by the optical sensors 31 and 32 (stacking height detecting means) only for the pallet 15 of the inserted / removed slot, and the pallet 15 of the other slot has the previous stacking height. The detected value is used as it is. In this way, the time required for detecting the stacking height of the tray 14 after the pallet 15 is inserted and removed can be shortened, and the production efficiency can be improved accordingly.

It is the figure which looked at the raising / lowering mechanism of the main magazine in the tray type electronic component supply apparatus in Example 1 of this invention, and a sub magazine from the front. It is the figure which looked at the raising / lowering mechanism of the main magazine and sub magazine of Example 1 from the side. 1 is a front view of a tray-type electronic component supply device according to Embodiment 1. FIG. 1 is a side view of a tray-type electronic component supply device according to Embodiment 1. FIG. 3 is a cross-sectional view of a sub-magazine portion of the tray-type electronic component supply device according to Embodiment 1. FIG. It is a flowchart which shows the flow of a process of the palette replacement | exchange control program of Example 1. FIG. It is a side view of the tray type electronic component supply device of Example 2. It is a cross-sectional view in the sub-magazine part of the tray type electronic component supply device of Embodiment 2.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Main body box, 12 ... Main magazine, 13 ... Sub magazine, 14 ... Tray, 15 ... Pallet, 16 ... Empty slot, 21L, 21R, 22L, 22R ... Feed screw, 25, 26 ... Door, 27 ... Operation input part (Input means), 28 ... Pallet drawing table, 31, 32 ... Optical sensor (stacked height detection means), 31a, 32a ... Light emitting element, 31b, 32b ... Light receiving element, 41 ... RFID tag (transmitter), 42 …antenna

Claims (9)

A tray-type electronic component supply device in which two magazines configured to be able to move up and down independently are arranged above and below, and a pallet loaded with electronic components is stored in a plurality of slots provided in each magazine; A pallet replacement system for a tray-type electronic component supply apparatus, comprising: a control means for switching the pallet between the two magazines by controlling the lifting and lowering operations of the two magazines and the pallet loading / unloading operation from each magazine;
One of the two magazines is used as a main magazine mainly used for supplying electronic components to the electronic component mounting machine, and the other magazine is used every time one of the pallets of the main magazine runs out of components. A sub-magazine used to replace the pallet that is out of parts, and at least one slot of the sub-magazine is an empty slot that does not store a pallet loaded with electronic components.
When the pallet drawn from one of the slots of the main magazine has run out of parts, the control means collects the pallet with the cut parts into an empty slot of the sub magazine and A new pallet loaded with electronic components of the same type as the out-of-stock electronic components is pulled out to supply the electronic components to the electronic component mounting machine, and the out-of-component pallets of the main magazine are stored in the new pallets. A pallet replacement system for a tray-type electronic component supply apparatus, wherein the tray-type electronic component supply device collects in a slot. In each slot other than the empty slot of the sub magazine, a pallet loaded with electronic components of the same type as the electronic components of the pallet stored in each slot of the main magazine is stored in the same order as the main magazine,
2. The pallet replacement system for a tray-type electronic component supply apparatus according to claim 1, wherein the control means identifies the type of electronic component of the pallet stored in the slot from the position of the slot of the sub magazine. .   3. The pallet replacement system for a tray-type electronic component supply apparatus according to claim 1, wherein a slot closest to the main magazine among the plurality of slots of the sub magazine is set as the empty slot.   3. The tray-type electronic component according to claim 1, wherein the sub-magazine does not fix the position of the empty slot, and the empty slot from which the pallet is drawn is used as the empty slot. Pallet replacement system for feeding equipment.   The pallet replacement system for a tray-type electronic component supply apparatus according to any one of claims 1 to 4, further comprising a display unit for displaying a position of a slot in which a pallet containing a component is stored. When an operator stores a pallet in one of the slots of the main magazine and the sub-magazine, an input unit is provided for inputting information on electronic parts of the pallet in association with the position of the slot,
2. The tray-type electronic component supply apparatus according to claim 1, wherein the control unit identifies a type of the electronic component of the pallet stored in the slot based on information input by the input unit. Pallet replacement system. Each pallet is provided with a transmission unit that transmits an identification signal for identifying the loaded electronic component and / or pallet,
The control means identifies the pallet and / or electronic component stored in each slot based on the identification signal transmitted from the transmission unit of the pallet stored in each slot, and the identification signal is 2. The pallet replacement system for a tray-type electronic component supply apparatus according to claim 1, wherein a slot that is not transmitted is determined as the empty slot. A plurality of trays containing electronic components are stacked on the pallet, electronic components are supplied from the uppermost tray to the electronic component mounting machine, and when the uppermost tray is out of components, It is configured to automatically eject the uppermost tray,
Comprising a stack height detecting means for detecting the stack height of the tray on the pallet;
The control means monitors pallet insertion / removal of each slot based on the presence / absence of an identification signal transmitted from the pallet transmission unit of each slot. The stacking height detecting means detects the stacking height of the tray only for the pallet of the slot, and the detected value of the previous stacking height is used as it is for the pallet of the other slot. The pallet replacement system for a tray-type electronic component supply device according to claim 7. Using a tray-type electronic component supply device in which two magazines configured to be able to move up and down independently are arranged vertically, and a pallet loaded with electronic components is stored in a plurality of slots provided in each magazine, A tray pallet replacement method for a tray-type electronic component supply device for switching the pallet between the two magazines by controlling the lifting and lowering operations of the two magazines and the pallet loading / unloading operation from each magazine,
One of the two magazines is used as a main magazine mainly used for supplying electronic components to the electronic component mounting machine, and the other magazine is used every time one of the pallets of the main magazine runs out of components. A sub-magazine used to replace the pallet that is out of parts, and at least one slot of the sub-magazine is an empty slot that does not store a pallet loaded with electronic components.
When a pallet drawn from one of the slots of the main magazine runs out of parts, the pallet with the cut parts is collected in an empty slot of the sub magazine, and the electronic parts that have run out of parts from the sub magazine Pull out a new pallet loaded with electronic components of the same type as the component, supply the electronic component to the electronic component mounting machine, and collect the new pallet in the slot of the main magazine where the pallet containing the component is stored. A pallet replacement method for a tray-type electronic component supply device.

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