JP2017130602A - Container direction determination device, mounter, and container direction determination method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of adjustment of a mounting angle as much as possible in a production facility which has a large restriction of an installation location for a container, and improve a through-put.SOLUTION: A container direction determination device groups the same electronic component EC in a mounting angle θ, assigns the group of which the number of component Np is largest to a container 23 in order of groups A to E, determines a direction of the container 23 so as to reduce the number of changing of the mounting angle θ in each container 23, and outputs. In the case where the maximum number Ntmax of the container 23 settable to a mounter 1 is smaller than the number of groups A to E, remaining groups A to E are assigned to the last tray 23 (steps S47 to 49). In the tray 23 to which a plurality of groups A to E is assigned, the direction of tray 23 is determined so as to reduce the number of changing of the mounting angle θ for the groups A to E of which the number of components Np is the maximum.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a container direction determining device, a mounting machine, and a container direction determining method.

  In a production line, when an electronic component is picked up by a mounting head of a mounting machine and the electronic component is mounted on a substrate, a component supply device is used. The component supply device includes a container that stores an electronic component and a storage unit that stores the container in a specific direction. As disclosed in Patent Document 1, there are mainly three types of forms of the container, which are a tray system for storing semiconductor components arranged in a matrix in the vertical and horizontal directions, and sticking the semiconductor components in a vertical row. The tape is stored in the shape of a magazine and the tape is stored in a reel while the semiconductor parts are attached in a line in the longitudinal direction of the tape.

  The tray system is mainly applied to packages such as QFP (Quad Flat Package) and BGA (Ball Grid Array) in which leads come out in four directions.

  The magazine system is mainly applied to packages such as DIP (Dual Inline Package), SOP (Small Outline Package), and SOJ (Small Outline with lead), in which leads come out in two directions.

  The taping method is used for semiconductor parts such as capacitors.

  In any aspect, the container stores a plurality of electronic components in the same posture.

  On the other hand, a direction around a vertical axis (hereinafter referred to as “mounting angle”) when electronic components are mounted is determined on the substrate. Therefore, when the electronic component is mounted by the mounting head, if the direction of the electronic component in the container does not match the mounting angle, it is necessary to execute an adjustment process for matching the direction of the electronic component to the mounting angle. In this adjustment process, the lower part of the electronic component picked up by the mounting head is picked up by the component inspection camera to check the product number, etc., and the electronic component is rotated around the vertical axis according to the mounting angle. The operation to align. When the electronic component is rotated around the vertical axis, if the rotation speed is high, the electronic component may be displaced or detached. Therefore, it is necessary to rotate the electronic component at a low speed so that the electronic component can be prevented from being displaced or detached.

  Accordingly, proposals have been made to reduce the mounting angle adjustment process as much as possible and to improve the throughput.

  For example, Patent Document 2 proposes a method of determining the arrangement position of a component cassette (an example of a container) in a component mounting apparatus that mounts components on a substrate. In this method, there are provided a plurality of component supply units with different supply angles of components from the component cassette, and among the plurality of component supply units, the component is picked up from the component cassette by the mounting head and mounted on the substrate. The method includes a step of determining a component supply portion that minimizes the amount of component rotation by the mounting head as the component cassette arrangement position.

  Further, in Patent Document 3, when changing the mounting angle of an electronic component, electronic components having different mounting angles are arranged separately in different containers (cassettes in the same publication) so that the number of changes in the mounting angle is reduced. Discloses a process of grouping electronic components for each mounting angle.

JP 2001-287785 A Japanese Patent No. 43877991 Japanese Patent No. 3476485

  The techniques disclosed in Patent Documents 2 and 3 are all based on preparing a plurality of types of cassettes as containers according to the mounting angle.

  However, depending on the specifications of the production equipment, it is often difficult to prepare a container for each mounting angle. Further, the number of containers (tray or cassette) that can be prepared is often limited depending on the production form. Therefore, the above-described method is effective only for a large-scale production line that can be provided with a plurality of containers for each mounting angle, and when there are restrictions on the specifications of a relatively small-scale production line or a mounting machine. , Could not be applied.

  The present invention has been made in view of the above-described problems, and even in a production facility having a large restriction on the installation location of the container, the number of adjustments of the mounting angle can be reduced as much as possible, thereby improving the throughput. It is an object of the present invention to provide a container direction determining device, a mounting machine, and a container direction determining method.

  In order to solve the above-mentioned problem, a first aspect of the present invention is to place a container containing electronic components in a fixed arrangement in a component supply unit of a mounting machine, and the mounting machine takes out the electronic component from the container. A container direction determination device that determines the direction of the container disposed in the component supply unit so that the number of changes in the mounting angle, which is the direction around the vertical axis of the electronic component, can be reduced when mounting. Information holding means for storing information relating to mounting processing of electronic components, including at least the maximum number of containers that can be placed on the mounting machine, and a group having the largest number of components by grouping the same electronic components for each mounting angle An allocating unit that sequentially allocates electronic components to containers, and when the maximum number stored in the information holding unit is less than the number of groups, the remaining group is allocated to the container whose allocation order is last. The allocation unit for allocating a loop, and a determination for determining the orientation of the container to be supplied to the component supply unit so that the number of changes in the mounting angle can be reduced for each container to which a group of electronic components is allocated by the allocation unit For containers to which a single group is assigned, the orientation of the container is determined so as to match the mounting angle corresponding to the group, and for containers to which multiple groups are assigned, the number of parts is A container comprising: the determining means for determining the orientation of the container so that the number of changes in the mounting angle for the largest number of groups can be reduced; and an output means for outputting information on the orientation of each container to a display device. Direction determining device.

  In this aspect, the electronic components are grouped for each mounting number for each product number. The priority order is determined in the order of the group having the largest number of parts, and the container orientation is determined based on the priority order. Therefore, as long as the container can be arranged, the number of changes in the mounting angle can be reduced as much as possible. In addition, in this aspect, information including the maximum number of containers that can be placed on the mounting machine is held. If the number of containers is limited and the maximum number is less than the number of electronic component groups required for allocation, the remaining group is allocated to the container whose allocation order is the last, and the allocation order is the last. A process of determining the orientation of the container to be executed so as to reduce the number of changes in the mounting angle for the group having the largest number of parts is executed. Therefore, even under conditions where it is often difficult to prepare containers for each mounting angle, such as restrictions on the specifications of relatively small production lines and mounting machines, it is possible depending on the maximum number of containers. It is possible to maintain and improve the operating rate by setting the tray in a suitable direction as much as possible and reducing the number of changes in the mounting angle. In addition, since the electronic component group is preferentially allocated from the electronic component having the largest number of components, the container having the smallest number of components is mounted on the container having the last allocation order. Therefore, also from this point, the number of changes in the mounting angle can be reduced as much as possible.

  According to another aspect of the present invention, there is provided a mounting head for picking up an electronic component provided at a component supply position and mounting the picked-up electronic component on a substrate fixed at the component mounting position, and an electron supplied to the mounting head. A container that accommodates parts in a fixed arrangement is a display that displays information output by the component supply unit, the container direction determining device, and the output means of the container direction determining device arranged such that the orientation of the container can be changed. The mounting machine is provided with a device.

  In this aspect, information on the posture of each container determined by the container direction determining device is displayed on the display device, and the operator's work can be supported. The worker mounts the electronic component for each container in a layout that can reduce the number of changes in the mounting angle by attaching the container to the component supply unit in the direction determined for each container by the container direction determining device. It becomes possible to use. Therefore, when a plurality of containers, for example, trays, are arranged in the component supply unit for each mounting angle, the operator can arrange the containers in the component supply unit in the correct orientation, thereby preventing erroneous installation of the operator. .

  In a preferred embodiment of the mounting machine, the container is a tray that accommodates a plurality of electronic components in a recess formed in a matrix. In this aspect, it is easy to set up to four directions as the orientation of the tray, and it is possible to determine the orientations corresponding to more various substrate specifications.

  According to another aspect of the present invention, there is provided a mounting head for picking up an electronic component provided at a component supply position and mounting the picked-up electronic component on a substrate fixed at the component mounting position, and an electron supplied to the mounting head. A packaging machine in which a container that contains components in a fixed arrangement is equipped with a component supply unit that is arranged so that the orientation of the container can be changed. Placed in the component supply unit, when the mounting machine takes out the electronic component from the container and mounts it, the component supply unit can reduce the number of changes in the mounting angle, which is the direction around the vertical axis of the electronic component. A container direction determining device for determining the orientation of the container disposed in the container, the container direction determining device grouping the same electronic component for each mounting angle, and placing the electronic component in a container for each group Assigning means, and determining means for determining the orientation of the container to be supplied to the component supply unit so that the number of changes in the mounting angle can be reduced for each container to which a group of electronic parts is assigned by the assigning means; An output unit that outputs information about the orientation of each container to a display device, and displays a direction in which the container is arranged in the component supply unit based on the information about the direction of the container output by the output unit. It is the mounting machine characterized by having.

  In this aspect, information on the posture of each container determined by the container direction determining device is displayed on the display device, and the operator's work can be supported. The worker mounts the electronic component for each container in a layout that can reduce the number of changes in the mounting angle by attaching the container to the component supply unit in the direction determined for each container by the container direction determining device. It becomes possible to use. Therefore, when a plurality of containers, for example, trays, are arranged in the component supply unit for each mounting angle, the operator can arrange the containers in the component supply unit in the correct orientation, thereby preventing erroneous installation of the operator. .

  According to still another aspect of the present invention, a container that stores electronic components in a fixed arrangement is arranged in a component supply unit of a mounting machine, and when the mounting machine takes out the electronic component from the container and mounts the electronic component, A container direction determination method for determining the direction of the container disposed in the component supply unit so that the number of changes in the mounting angle, which is the direction around the vertical axis, can be reduced, and is disposed at least in the mounting machine An information holding step that stores information related to electronic component mounting processing, including the maximum number of containers that can be stored, and the same electronic components are grouped for each mounting angle, and the electronic components are allocated to containers in the order of the group with the largest number of components. In the step, when the maximum number stored in the information holding means is less than the number of groups, the remaining groups are assigned to the container having the last allocation order. The allocation step, and a determination step for determining the orientation of the container to be supplied to the component supply unit so as to reduce the number of changes in the mounting angle for each container to which the electronic component group is allocated by the allocation step. For containers to which a single group is assigned, determine the orientation of the container so that it fits the mounting angle corresponding to the group, and for containers to which multiple groups are assigned, the group with the largest number of parts The container includes: the determination step of determining the orientation of the container so that the number of changes in the mounting angle can be reduced, and the output step of outputting information on the determined posture of each container to a display device. It is a direction determination method.

  According to the present invention, there is a restriction on the number of containers by assigning a group of electronic components to containers based on information including the maximum number of containers that can be placed on the mounting machine, and the maximum number of electronic components required for allocation. Even if the number of parts is less than the number of parts, assign the remaining group to the container with the last assignment order, and change the mounting angle for the group with the largest number of parts in the direction of the container with the last assignment order. As a result, the number of adjustments of the mounting angle can be reduced as much as possible even in production facilities where the installation location of the containers for storing electronic components is severely restricted, thereby improving throughput. There is a remarkable effect that it can be achieved.

  Further features, objects, configurations, and advantages of the present invention will be readily understood from the following detailed description that should be read in conjunction with the accompanying drawings.

1 is a schematic plan view of a mounting machine according to an embodiment of the present invention. FIG. 2 is a schematic front view of the mounting machine of FIG. 1. It is a block diagram which shows the principal part of the mounting machine of FIG. FIG. 2 is an ER (Entity Relationship) diagram showing a configuration of data stored in the mounting machine of FIG. 1. It is explanatory drawing which shows the relationship between a mounting angle and a supply position. It is a flowchart which shows the container direction determination procedure employ | adopted as the mounting machine of FIG. 7 is a flowchart illustrating an example of a component / tray allocation processing subroutine in the container direction determination procedure of FIG. 6. 8 is a flowchart showing a tray supply number determination processing subroutine in the component / tray allocation processing subroutine of FIG. 7 is a flowchart showing a tray supply angle determination processing subroutine in the container direction determination procedure of FIG. 6. 7 is a view table showing an execution process of the flowchart of FIG. 6. FIG. 8 is a view table showing an execution process of the component allocation process of FIGS. 6 and 7. FIG. 8 is a view table showing data processed in the process of executing the parts / tray allocation process of FIGS. 6 and 7. FIG. 8 is a view table showing data processed in the process of executing the parts / tray allocation process of FIGS. 6 and 7. FIG. 8 is a view table showing data processed in the process of executing the parts / tray allocation process of FIGS. 6 and 7. 16 is a view table showing data processed in the execution process of the tray supply direction determination process of FIGS. 6 and 15. In the aspect of FIG. 15, it is the example of a screen display based on the execution result of the flowchart of FIG. 7 is a view table showing data processed in the execution process of the flowchart of FIG. 17 is a display example of a screen based on the execution result of the flowchart of FIG. 6 in the aspect of FIG.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

  First, with reference to FIG. 1 and FIG. 2, the case where the mounting machine in one Embodiment of this invention is operated in a comparatively small-scale production facility is demonstrated. In the following description, the direction along the substrate transport path PH is the X-axis direction, the horizontal direction orthogonal to the X-axis direction is the Y-axis direction, and the vertical direction is the Z-axis direction. Moreover, in the Y-axis direction, one end side (lower side in the width direction in FIG. 1) is assumed to be the front.

  The mounting machine is an apparatus that is disposed on a substrate transport path PH of a production line, stops a substrate W at a predetermined substrate stop position ST, and mounts electronic components with a mounting head. In the example shown in the figure, the substrate W is a relatively rigid printed board, but in addition to the printed board W, the board W includes a flexible board having a thin and variable shape (flexible), and a printed board and a flexible board. It may be a rigid flexible substrate.

  The mounting machine 1 includes a base 12. The base 12 is a substantially rectangular structure in plan view extending long along the X-axis direction so that the center line passes along the transport path PH.

  A substrate transfer device 14 extending along the transfer path PH is provided at the center of the base 12. The board transfer device 14 includes a pair of conveyor pairs 14 a and 14 b, receives the board W transferred from an upstream device (not shown), and is placed at the board stop position ST of the component mounting portion set at the center of the base 12. After the substrate W is temporarily stopped and the mounting operation of the electronic component EC is completed, the substrate W can be unloaded from the substrate stop position ST to a downstream device (not shown).

  A component supply device 20 that is an example of a component supply unit is set on the front side in the width direction of the base 12. The base 12 itself has specifications that allow the component supply devices 20 to be installed on both sides in the width direction. However, in the illustrated embodiment, the component supply device 20 is installed only on the front side due to production line restrictions.

  Each component supply device 20 is a tray type, and each includes a pallet storage unit 21, a plurality of pallets 22 mounted on the pallet storage unit 21, and a tray 23 installed on the pallet 22. Since the component supply device 20 itself is a known device, detailed description is omitted, but in the illustrated example, two sets of fixing members 24 are provided on both the front and rear sides of one pallet 22, and these two sets By the fixing member 24, two trays 23 can be placed on both the front and rear sides. The tray 23 is a flat container having a substantially rectangular shape in plan view, and a positioning notch 23a is formed at one corner of the four corners.

  Each tray 23 is formed with a matrix-shaped recess, and each recess accommodates an electronic component EC made of a package such as QFP (Quad Flat Package) or BGA (Ball Grid Array). Since each electronic component EC has directivity, in FIG. 1, a circle is indicated at one of the four corners to indicate that the part is the front.

  In the component supply device 20, when mounting the electronic component EC, the mounting table (not shown) is driven back and forth in a predetermined procedure, and the pallet 22 is put in and out. As a result, the component supply device 20 is configured to project an arbitrary tray 23 at a component supply position facing the board conveyance path PH and to supply the electronic component to the mounting head 30 (see FIG. 2).

  A tray number that specifies the installation position of the tray 23 is set for each pallet 22 in the component supply device 20. The tray number is, for example, a branch number represented by 0 for the side close to the substrate transport path PH and 1 for the opposite side for each identification number of the supply device. For example, “A1-0, A1” -1, A2-0, A2-1 "etc. The further configuration and the like of the component supply device are described in detail in Japanese Patent Application Laid-Open No. 2015-228453 previously proposed by the applicant of the present application, and thus the remaining description is omitted.

  Next, the mounting machine 1 includes a mounting head 30.

  As shown in FIG. 2, the mounting head 30 is an inline-type device in which a plurality of suction nozzles 31 are arranged along the X-axis direction, and each of the suction nozzles 31 sucks the electronic component EC supplied to the component supply position. Then, the electronic component EC is mounted on the substrate W by being conveyed to a predetermined position on the substrate W.

  The mounting head 30 is driven by the drive mechanism 40.

  The drive mechanism 40 includes a motor, a ball screw mechanism, and the like, and is provided in a structure including pillars erected at the four corners of the base 12 so that the mounting head 30 is driven to an arbitrary position on the XY plane. It is configured.

  Next, the mounting machine 1 includes a control device 100 that controls drive of the component supply device 20, the mounting head 30, the drive mechanism 40, and the like. In the present embodiment, the control device 100 is a device that functions as a container direction determining device.

  Referring to FIG. 3, the control device 100 includes a main control unit 101 that is embodied by a microprocessor or the like. A motor control unit 103, an air pressure control unit 104, a sensor control unit 105, an input / output control unit 106, and a storage device 110 are connected to the bus 102 of the main control unit 101.

  The motor control unit 103 includes various motor controllers and drivers. Control targets of the motor control unit 103 include the above-described substrate transfer device 14, component supply device 20, mounting head 30, and various motors of the drive mechanism 40.

  The air pressure control unit 104 includes a controller and a driver that control air pressure from the air pressure supply source to control various devices driven by the air pressure. The control target of the air pressure control unit 104 includes a mechanism for supplying air to the suction nozzle 31 of the mounting head 30.

  The sensor control unit 105 includes a controller such as a sensor and a driver. Sensors 91 and encoders 92 are connected to the sensor control unit 105.

  The input / output control unit 106 includes a controller and a driver that control input / output. Connected to the input / output control unit 106 are a display unit 93 for displaying various types of information to an operator and an input unit 94 embodied by a pointing device or the like. In the illustrated example, the display unit 93 is an example of a display device.

  The storage device 110 is a general term for a memory architecture implemented by a ROM, a RAM, an auxiliary storage device, or the like. The storage device 110 includes a mounting program storage unit 131, a container direction determination program storage unit 132, a data storage unit 133, and the like.

  Based on the programs and data stored in the storage device 110, the main control unit 101 of the control device 100 functionally includes an allocation unit 140, a determination unit 141, and an output unit 142, which will be described in detail later.

  The allocation unit 140 functions as a module that allocates the electronic component EC to be mounted for each container.

  The determining unit 141 functions as a module that determines which tray 23 is mounted in which direction when the tray 23 is mounted on the pallet 22 of the component supply device 20.

  The output unit 142 functions as a module for outputting information on the tray orientation determined by the determination unit 141 and causing the display unit 93 to display the information.

  Next, the data shown in FIG. 4 is included in the data registered in the data storage unit of the control device 100 in order to perform the functions of the determination unit 141 and the output unit 142.

  Referring to FIG. 4, in the illustrated example, a substrate table 151 that stores information about the substrate W, a component table 152 that stores information about the electronic component EC, and information required for the mounting process for each mounting position of the substrate W are shown. A mounting table 153 that stores information, a group table 154 that stores information about groups classified by mounting angle θ for each electronic component EC mounted on the substrate W, and a supply device table 155 that stores information about the component supply device 20 An equipment table 156 for storing information on production equipment, an equipment specification table 157 for storing information on production equipment details, and a tray supply angle for storing information on a tray supply angle determined based on these information A table 158 is provided. Each of the tables 151 to 158 is an object for storing data arranged in a two-dimensional matrix composed of items (columns) and values (rows).

  The substrate table 151 includes an item {substrate product number}. This item {substrate product number} is an item for storing a value that uniquely identifies the type of the substrate W, such as “BD-100”.

  The parts table 152 includes an item {part number}. This item {part number} is an item for storing a value that uniquely identifies the type of electronic component EC, such as “P-111”.

  The mounting table 153 includes items {substrate product number, mounting coordinate X, mounting coordinate Y, mounting angle θ, part number}. The item {substrate product number, mounting coordinate X, mounting coordinate Y} is an item for storing a value for specifying the mounting position of the substrate W for each substrate W. The substrate W has a coordinate value assigned to the XY plane specified by the same coordinate system for each axial direction, and each of the X-axis coordinate value and the Y-axis coordinate value is provided. The item {mounting coordinates X, mounting coordinates Y} can be stored. The item {part number, mounting order} includes the part number and mounting of the electronic component EC for each mounting position of the substrate W (position for each component on the substrate W specified by {mounting coordinates X, mounting coordinates Y}). It is an item for storing values for associating ranks, and by these values, it is possible to know which electronic component EC is mounted in which mounting position on which substrate W and in what order. Become.

  The group table 154 includes items {group name, number of parts, priority order}. {Group name} is represented by, for example, a character string such as “A, B, C, D,...”, And each indicates the mounting angle θ to be changed based on the home position of the suction nozzle 31. This is an item for storing values for specifying “0 °, 90 °, 180 °, 270 °...”. These are used as information for uniquely identifying a group when the electronic components EC are grouped in a procedure to be described later. The item {number of parts} is an item for storing a value representing the number of grouped electronic parts EC for each group. The item {priority order} is an item for storing a value for ordering each group in descending order of the number of parts. The item {priority order} may be a derived function calculated by calculation, and does not necessarily need to be stored in a table.

  The supply device table 155 includes an item {supply device number, number of trays}. The item {supply device number} is an item that is expressed by a character string such as “A1” and “A2”, for example, and stores a value for uniquely specifying the model of the component supply device 20 installed in the production line. The item {number of trays} is an item for storing a value representing the number of trays that can be mounted on one pallet of the component supply device 20.

  The equipment table 156 includes an item {equipment number, maximum allowed tray number Ntmax}. The item {equipment number} is an item for storing a value for individually identifying the mounting machine 1 (see FIG. 1) equipped with the component supply device 20. In addition, the item {maximum permitted tray number Ntmax} is the number of trays 23 that can be set for each facility (here, "the number of trays 23" is the number of trays 23 that can be installed on one pallet 22) This is an item for storing a value calculated by the product of the number of component supply devices 20 that can be installed in the facility. By setting such items, the control device 100 according to the present embodiment can assign suitable electronic components according to production maintenance specifications. The item {maximum allowed tray number Ntmax} or the value stored in the item is an example of “the maximum number of containers that can be placed on the mounting machine”.

  The equipment detail table includes items {equipment number, part device number, tray supply position}. The item {equipment number, part device number} is an item for storing a value for associating the information in the supply device table 155 and the information in the facility table 156, whereby any component supply device 20 is assigned to any production facility. It is configured so that it can be specified whether or not is installed. The item {tray supply position} is an item for storing a value for specifying the position where the tray 23 is installed for each production facility and for each pallet 22, for example, a character string such as “T01, T02”. is there.

  The tray supply angle table 158 includes items {group name, equipment number, component device number, tray supply direction}. The item {group name, equipment number, component device number} indicates the supply position of the tray 23 to be set for each group of electronic components EC mounted on the board W for the board W produced in a certain production facility. It is an item provided so that it can be specified. The item {tray supply direction} is expressed by a numerical value or a character string such as “0, 1”, for example, and is an item for storing information for specifying the direction of the tray 23.

  Here, referring to FIG. 5, since the quadrature of the relative relationship between the substrate W and the component supply apparatus 20 differs depending on the area sandwiching the substrate transport path PH, the value of {tray supply direction} It is determined corresponding to the mounting angle θ.

  That is, with respect to the mounting angle θ, as shown in FIG. 5A, the mounting angle θ = 0 ° is the orientation in which the mark M of the electronic component EC is on the left side, and the right side around the vertical axis RO passing through the center of the electronic component EC. In FIG. 5, when the tray 23 is installed, the mounting angle θ is aligned in the same direction in any area that is divided forward and backward from the substrate transport path PH in FIG. It is prescribed as follows. Therefore, in the front area (below the substrate transport path PH in FIG. 5), when the mounting angle θ = 0 °, the value 0 of {tray supply direction} is set as shown in FIG. When the mounting angle θ = 180 °, a value 1 of {tray supply direction} is set as shown in FIG. On the other hand, in the rear area (upper side of the substrate transport path PH in FIG. 5), when the mounting angle θ = 0 °, a value 1 of {tray supply direction} is set as shown in FIG. When the mounting angle θ = 180 °, a value 0 of {tray supply direction} is set as shown in FIG. The item {tray supply direction} or the value stored in the item is an example of information indicating “the direction of the container”.

  The data described above is stored in advance in the host computer based on the production planning program. As a data acquisition method, various methods such as an operator input from the input unit 94, an auxiliary storage device connected to the storage device, data reading, online data download from a host computer, etc. may be adopted. it can.

  Next, with respect to the functions of the allocation unit 140, the determination unit 141, and the output unit 142, FIG. 10 based on the flowcharts shown in FIGS. 6 to 9 and information stored in the data storage unit 133 (tables 151 to 158 in FIG. 4). Description will be made with reference to the view table in FIG.

  First, with reference to FIG. 6 and FIG. 10, the assigning unit 140 reads the production program, the part information, the device information, and the maximum permitted tray number Ntmax (step S1). By executing this process, for example, the data shown in FIG. 10 is read out of the data stored in the data storage unit 133. The data includes {substrate part number, part number, mounting coordinate X, mounting coordinate Y, mounting angle θ} registered in the mounting table 153, and {maximum permitted tray number Ntmax} included in the equipment table 156. {Equipment number, parts device number, tray supply number} included in the equipment specification table 157 are included.

  Next, the assigning unit 140 reads the values of the mounting table 153, the group table 154, the equipment description table 157, and the tray supply angle table 158, and the electronic components EC belonging to the group for which the supply direction is not calculated. It is determined whether or not there is (step S2). That is, among the electronic components registered in the mounting table 153, if there is a group in which the tray supply direction is not set, it is determined as unprocessed, and the already determined group is determined as processed.

  If there is an unprocessed substrate W, the allocation unit 140 selects one of the unprocessed electronic components EC (step S3), and for this electronic component EC, a component / tray allocation processing subroutine (step S4), a tray A supply direction determination processing subroutine (step S5) is sequentially executed.

  Referring to FIG. 7, in the component / tray allocation processing subroutine, first, the component types of the selected electronic component EC are grouped for each mounting angle θ (step S40). By this processing, for example, as in the view table shown in FIG. 11, the group A to the group C are classified for the electronic component “P-111” mounted on the board “BD-100”. Score Np and priority are calculated. The priority order is determined by decreasing the value of the number Np of parts in the group in descending order. In the example of FIG. 11, group C (mounting angle θ = 180 °) is the largest, so group C is set first, followed by group A (mounting angle θ = 0 °) and group B (mounting angle θ = 90). °) and the order is determined.

  Next, the allocating unit 140 executes a tray supply number Nt determination processing subroutine (step S41).

  Referring to FIG. 8, in this subroutine, the value of maximum allowed tray number Ntmax stored in equipment table 156 is referred to (step S410), and maximum allowed tray number Ntmax is compared with group number Ng (step S411). .

  If the maximum allowed tray number Ntmax is equal to or greater than the number of groups, the assigning unit 140 sets the tray supply number Nt to the group number Ng and returns to the component / tray assignment processing subroutine (step S412). On the other hand, if the maximum permitted tray number Ntmax is less than the number of groups, the allocation unit 140 sets the tray supply number Nt to the maximum permitted tray number Ntmax and returns to the component / tray allocation processing subroutine (step S413). In this way, by determining the tray supply number Nt in advance, it is possible to execute a suitable allocation process when the number of groups is larger than the maximum permitted tray number Ntmax in the subsequent process.

  As shown in FIG. 12, in this embodiment, only one component supply device 20 “A1” is mounted on the mounting machine 1. Therefore, since the maximum permitted tray number Ntmax is “2”, the tray supply number Nt is set to two.

  Referring to FIG. 7 again, after determining the tray supply number Nt, the assigning unit 140 initializes the count variable N to 1 (step S42), and the group having the largest number of parts Np (in the example shown, group C ) Are selected (step S43), and the electronic component EC of the group is assigned to the group in order from the tray 23 with the smallest number of assigned mounting points (that is, the tray that is not yet mounted) (step S44). ). As a result, the electronic components EC are assigned to each tray 23 in order from the largest group. In the embodiment of FIG. 1, substantially only two tray supply positions T01, T02 can be used. Therefore, group C is assigned to tray number 2 to which group B is assigned (see FIG. 13).

  Next, the assigning unit 140 determines whether assignment has been completed for all groups (step S46). If the allocation has not been completed, the allocation unit 140 further compares the count variable N with the tray supply number Nt (step S47). If the count variable N is less than the tray supply number Nt, the allocation unit 140 increments the count variable N, proceeds to step S43, and repeats the above-described processing. On the other hand, if the count variable N is equal to or greater than the tray supply number Nt, the tray supply number Nt cannot be increased, and too many electronic components EC are generated. In this case, the assigning unit 140 sets the count variable N to the same value as the tray supply number Nt (step S49). That is, the remaining electronic components are assigned to the last tray.

  When the processes in steps S42 to S49 are executed in the example of FIG. 1, the allocation of each electronic component EC is as shown in the view table shown in FIG. As shown in the drawing, the group C is assigned to the tray 23 with the tray number 1 that fits in the tray supply number Nt, while the remaining groups A and B are assigned to the tray 23 with the tray number 2. Yes. Here, as in step S43, the electronic components EC having the largest number of components Np are mounted on the first tray by assigning trays in order from the group having the largest number of electronic components based on the priority order of the groups. Will be.

  Referring to FIG. 7 again, when it is determined in step S46 that the allocation has been completed for all groups, allocation unit 140 selects trays in the order of tray numbers (step S401), and substrate stop position ST for each selected tray. The trays are assigned in order from the tray supply position close to (step S402). After the assignment of a certain tray is completed, it is determined whether or not all trays have been assigned, that is, whether or not an unprocessed tray remains (step S403), and an unprocessed tray remains. In this case, the process proceeds to step S401 and the above-described processing is executed. When the processing is completed for all trays, the process returns to the main routine.

  When the processing of steps S401 to S403 is executed in the example of FIG. 1, the allocation of each electronic component EC is as shown in the view table shown in FIG. As shown in the figure, the tray supply position T01 closest to the substrate W is set for the tray 23 having the tray number 1 to which the group C is assigned. Therefore, only the electronic component EC belonging to the group C is mounted on the tray 23 of the tray 1. For the tray 23 with the tray number 2, a supply position T02 far from the substrate W is set. On the tray 23 of the tray 2, the electronic components EC belonging to the groups A and B are mounted in this order.

  Next, when the tray supply direction determination process subroutine (step S5) shown in FIG. 6 is executed, the determination unit 141 executes the process of FIG.

  Referring to FIG. 9, in the subroutine, determination unit 141 determines whether there is an unallocated tray 23 (step S50). When there is an unassigned tray 23, the determination unit 141 executes the processes of steps S51 and S52 one by one for the tray.

  In the processing of step S51, the determining unit 141 mounts the mounting angle when mounting the electronic component EC on the basis of the group having the largest number Np of electronic components EC mounted on the unallocated tray 23. The supply direction of the tray 23 is determined in the direction in which θ is the smallest.

  Referring to FIGS. 1 and 15, the tray of tray number 1 set at tray supply position T01 includes only group C electronic components EC. Therefore, the determination unit 141 causes the mounting angle θ to be 180 ° (the state in which the electronic component EC faces the side opposite to the substrate W as shown in FIG. 5B) at the tray supply position of tray number 1. The tray supply direction is calculated (step S51), and the value “1” is set (step S52). On the other hand, regarding the tray supply position of tray number 2, the mounting angle θ of the electronic component EC of group A is used as a reference, and the mounting angle θ is 0 ° (as shown in FIG. 5A), the electronic component EC is mounted on the substrate W. The tray supply direction is calculated so as to be suitable (step S51), and the value “0” is set (step S52).

  By setting in this way, the number of electronic components that do not need to be changed in the mounting angle θ is the largest in each tray, and therefore, it is possible to suppress as much as possible the decrease in operating rate associated with the processing for changing the mounting angle θ. .

  After these calculations are completed, the output unit 142 outputs a display signal to the display unit 93 so as to display the calculation result with a GUI (graphical user interface) (step S6). Thereby, the operator can easily know in which position on the front and rear of which pallet 22 and in which direction the tray 23 should be installed.

  Referring to FIG. 16, the GUI shown in FIG. 16 corresponds to the object 101 indicating the tray 23, the object 102 indicating the positioning member 24, and the notch shape of the tray 23 with respect to the notch 101 a of the object 101. , An object 104 for displaying a character string based on information stored in the data storage unit 133 (tables 151 to 158 in FIG. 4), and an operation button (a menu button for transitioning to a menu screen as an example). The object 105 to be shown is included.

  As shown in FIG. 16, FIG. 16 shows the calculation results shown in the view table of FIG. 15, and corresponding to FIG. 15, tray supply position, tray supply direction, mounting angle θ, board number, part number, maximum permitted tray Numbers are displayed.

  If the component supply device 20 “A2” can be installed at the rear station in FIG. 1, the maximum permitted tray number Ntmax is 4. In such a facility, when electronic components are classified into group A to group E for the relatively large substrate “BD-101” (however, group A: 0 °, group B: 90 °, group C: 180) °, group D: 270 °, group E: 45 °), and the final calculation result is as shown in FIG. In FIG. 17 (A), the tray supply direction 3 is a posture rotated 90 ° clockwise from the state of FIG. 5 (A) in the front quadrant, and in FIG. It is a posture rotated 90 degrees clockwise from the state of C). If the tray supply direction 3 cannot be assigned due to hardware limitations of the component supply apparatus, the tray supply direction is updated to an assignable tray supply direction. In the example shown in the figure, the tray supply positions T02 and T12 are 3 respectively, and cannot be set by the component supply apparatus shown in the figure, so FIG. 17 shows the original in the column of {Tray supply direction} in FIG. “3”, which is the value of, is updated to “0” that can be assigned as shown in FIG. The update may be performed automatically based on an appropriate algorithm, or may be performed manually.

  As described above, the larger the maximum permitted tray number Ntmax, the more the change in the mounting angle θ can be reduced as much as possible. However, depending on the equipment, the maximum permitted tray number Ntmax is limited due to other restrictions. There are many cases. Even in such a case, according to the present embodiment, the setting of the tray supply direction that can suppress the change in the mounting angle θ as much as possible can be executed.

  Referring to FIG. 18, after the calculation of FIG. 17B is completed, the output unit 142 outputs a display signal to the display unit 93 so as to display the calculation result with a GUI (step S <b> 6).

  18 corresponds to FIG. 17B, in addition to the objects 101 to 105 indicating the tray 23, the object 106 indicating the character string indicating the information for identifying the line on which the component supply device 20 is arranged, , An object 107 representing a line indicating a boundary between the lines A and B is included. With this information, the operator can easily know in which position on the front and rear of which pallet 22 and in which direction the tray 23 should be installed.

  As described above, in the container direction determination device or the container direction determination method according to the present embodiment, when the maximum allowed tray number Ntmax stored in the storage device 110 is less than the number of groups A to E, the last The remaining groups A to E are assigned to the tray 23, and the trays 23 to which a plurality of groups A to E are assigned are arranged so that the number of changes in the mounting angle θ can be reduced for the groups A to E having the largest number of parts Np. 23 is determined.

  For this reason, in this embodiment, the electronic components EC are grouped for each product number and each mounting angle θ. The priority order is determined in the order of the groups A to E having the largest number of parts Np, and the direction of the tray 23 is determined based on the priority order. Therefore, as long as the tray 23 can be disposed, the number of changes in the mounting angle θ can be reduced as much as possible. In addition, in the present embodiment, information including the maximum permitted tray number Ntmax of the trays 23 that can be arranged in the mounting machine 1 is held. When the number of trays 23 is limited and the maximum permitted tray number Ntmax is less than the number of groups A to E of electronic components EC necessary for allocation, the remaining groups A to E are allocated to the last tray 23. In addition, a process for determining the direction of the last tray 23 so that the number of changes of the mounting angle θ can be reduced for the groups A to E having the largest number of parts Np. Therefore, even under conditions in which it is often difficult to prepare the tray 23 for each mounting angle θ, such as a relatively small production line or restrictions on the specifications of the mounting machine 1, the maximum permitted tray of the tray 23. According to the number Ntmax, it is possible to maintain and improve the operating rate by setting the tray in a suitable direction as much as possible and reducing the number of changes of the mounting angle θ as much as possible. . In addition, since the electronic components EC groups A to E are preferentially assigned from the one having the largest number Np of electronic components EC, the last tray 23 is mounted with a relatively small number Np of components. It will be. Therefore, also from this point, the number of changes in the mounting angle θ can be reduced as much as possible.

  Further, the mounting machine 1 according to the present embodiment picks up the electronic component EC provided at the component supply position, and mounts the picked-up electronic component EC on the substrate W fixed at the component mounting position, A tray 23 containing electronic components EC supplied to the head in a fixed arrangement includes a pallet 22 in which the orientation of the tray 23 can be changed, a tray direction determining device, and an output unit 142 of the tray direction determining device. And a display unit 93 for displaying the output information. For this reason, in the present embodiment, the view tables shown in FIGS. 15, 17A, and 17B can be displayed on the screen as appropriate, and the arrangement information shown in FIGS. 16 and 18 is graphically displayed. Then, information regarding the posture of each tray 23 determined by the tray direction determining device can be displayed on the display unit 93 to support the operator's work. Then, the operator mounts the tray 23 on the pallet 22 in the orientation determined for each tray 23 by the tray direction determining device, and thus the electronic component for each tray 23 with a layout that can reduce the number of changes in the mounting angle θ. The EC can be used for the mounting machine 1.

  In the present embodiment, the container is a tray 23 that houses a plurality of electronic components EC in a recess formed in a matrix. Therefore, in the present embodiment, it is easy to set up to four directions as the orientation of the tray 23, and the orientations corresponding to various specifications of the substrate W can be determined.

  The present invention is not limited to the embodiment described above.

  For example, the container orientation device is embodied by the control unit of the mounting machine 1, but is not limited to this example, and may be constructed using a control function of a factory computer or a host computer.

  Further, in the mounting machine 1 according to the above-described embodiment, the container employs the tray 23 that accommodates the plurality of electronic components EC in the recesses formed in a matrix shape. A stick feeder that is formed and accommodates the electronic component EC in the same posture may be employed.

  In addition, since the number of trays 23 and cassettes that can be prepared is often limited depending on the production mode, the maximum permitted tray number Ntmax is set for each part used in the production mode in order to cope with the production mode. Also good. Specifically, the {maximum permitted tray number} of the equipment table 156 may be set in the mounting table 153 of FIG.

  16 and 18 show that various information based on information stored in the data storage unit 133 (tables 151 to 158 in FIG. 4) can be displayed graphically. What the operator needs can be selected as appropriate, and is not limited to the examples shown in FIGS. As an example, in the examples of FIGS. 16 and 18, when the arrangement information of the tray 23 is graphically displayed, the object 104 indicating the mounting angle θ is displayed at the side of the tray 23 at the same time. Since some of the components to be supplied may have different mounting angles θ, the mounting angles θ may not necessarily be displayed when the mounting angles θ are different.

  In addition, it goes without saying that various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Mounting machine 20 Component supply apparatus 21 Pallet storage part 22 Pallet 23 Tray (an example of a container)
30 mounting head 31 suction nozzle 93 display unit (example of display device)
100 Control device (example of container direction determination device)
110 Storage device (an example of information storage means)
140 Allocation unit (an example of allocation means)
141 determining unit (an example of determining means)
142 Output unit (an example of output means)
AE Group EC Electronic Components Ntmax Maximum number of allowed trays (example of maximum number)
S4 Parts / tray allocation processing subroutine (an example of allocation step)
S5 Tray supply direction determination processing subroutine (an example of a determination step)
W Substrate θ Mounting angle

Claims (5)

A container that stores electronic components in a fixed arrangement is placed in the component supply unit of the mounting machine, and when the mounting machine takes out the electronic component from the container and mounts it, the mounting is oriented around the vertical axis of the electronic component. A container direction determining device for determining the direction of the container arranged in the component supply unit so as to reduce the number of angle changes;
Information holding means for storing information relating to the mounting process of the electronic component, including at least the maximum number of containers that can be arranged in the mounting machine;
An allocating unit that groups the same electronic component for each mounting angle and assigns the electronic component to the container in the order of the group having the largest number of components, and the maximum number stored in the information holding unit is less than the number of the groups The allocation means for allocating the remaining group to the container whose allocation order is last;
A determination unit for determining a direction of a container to be supplied to the component supply unit so that the number of changes in the mounting angle can be reduced for each container to which a group of electronic components is allocated by the allocation unit. For containers assigned with, determine the orientation of the container to match the mounting angle corresponding to the group, and for containers assigned with multiple groups, the number of changes in the mounting angle for the group with the largest number of parts. Said determining means for determining the orientation of the container so as to reduce
An output means for outputting information related to the orientation of each container to a display device. A pick-up head for picking up an electronic component provided at a component supply position and mounting the picked-up electronic component on a substrate fixed at the component mounting position;
A container that stores electronic components to be supplied to the mounting head in a fixed arrangement, a component supply unit that is arranged so that the orientation of the container can be changed, and
A container direction determining device according to claim 1;
And a display device that displays information output by the output means of the container direction determining device. In the mounting machine according to claim 2,
The mounting machine is characterized in that the container is a tray that accommodates a plurality of electronic components in recesses formed in a matrix. A pick-up head for picking up an electronic component provided at a component supply position and mounting the picked-up electronic component on a substrate fixed at the component mounting position;
A container that stores electronic components to be supplied to the mounting head in a fixed arrangement, a component supply unit that is arranged so that the orientation of the container can be changed, and
A mounting machine comprising:
A container that stores electronic components in a fixed arrangement is placed in the component supply unit of the mounting machine, and when the mounting machine takes out the electronic component from the container and mounts it, the mounting is oriented around the vertical axis of the electronic component. In order to reduce the number of times the angle is changed, a container direction determining device that determines the direction of the container disposed in the component supply unit,
The container direction determining device includes:
An assigning means for grouping the same electronic component for each mounting angle and assigning the electronic component to the container for each group;
Determining means for determining the orientation of the container to be supplied to the component supply unit so that the number of changes in the mounting angle can be reduced for each container to which a group of electronic components is assigned by the assigning means;
Output means for outputting information on the orientation of each container to the display device,
A mounting machine comprising: a display device for displaying a direction in which the container is arranged in the component supply unit based on information on the container direction output by the output unit. A container that stores electronic components in a fixed arrangement is placed in the component supply unit of the mounting machine, and when the mounting machine takes out the electronic component from the container and mounts it, the mounting is oriented around the vertical axis of the electronic component. A container direction determination method for determining the direction of the container disposed in the component supply unit so that the number of angle changes can be reduced,
An information holding step for storing information relating to the mounting process of the electronic component, including at least the maximum number of containers that can be placed on the mounting machine;
The assigning step of grouping the same electronic parts for each mounting angle and assigning the electronic parts to the container in the order of the group having the largest number of parts, wherein the maximum number stored in the information holding means is less than the number of the groups In the case, the assigning step of assigning the remaining group to the container whose assignment order is last;
A determination step for determining a direction of a container to be supplied to the component supply unit so that the number of changes in the mounting angle can be reduced for each container to which a group of electronic components is allocated in the allocation step, For containers assigned with, determine the orientation of the container to match the mounting angle corresponding to the group, and for containers assigned with multiple groups, the number of changes in the mounting angle for the group with the largest number of parts. Determining the orientation of the container so as to reduce
An output step of outputting information on the determined posture of each container to a display device.

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