JP6767641B2 - Parts supply support method and parts supply support system in the parts mounting line - Google Patents

Description

The present invention relates to a component supply support method and a component supply support system in a component mounting line including a component mounting device for mounting components on a board.

A component mounting line that produces a mounting board by mounting components on a board is configured by connecting a plurality of component mounting devices. In each component mounting device, the component mounting work of taking out the components from the component feeder mounted on the component supply unit and transferring and mounting the components on the board is repeatedly executed. In the process of continuously executing the component mounting operation, the component replenishment operation of newly replenishing the component to the component feeder is repeatedly executed at the timing when the component is consumed and the component runs out. For the purpose of executing this parts replenishment work at an appropriate timing, a measure such as notifying the occurrence time of parts shortage predicted by a simulation calculation in advance has been used (see, for example, Patent Document 1).

In the prior art example shown in Patent Document 1, the parts out notice time is calculated in real time from the number of parts supplied and the parts consumption information from the parts mounting device, and the parts out notice is given to the mobile device owned by the operator. It is disclosed that the display is sorted in chronological order. Then, the worker performs the parts replenishment work in consideration of the setup such as the replenishment timing based on the displayed parts out notice time and his / her own experience.

Japanese Unexamined Patent Publication No. 2002-164697

However, in the prior art including Patent Document 1, since the judgment of parts supply is left to the worker, he / she does not notice that the amount of work cannot be completed even if the work is performed smoothly (insufficient man-hours), and the parts are not noticed. There is a problem that the replenishment work may not be completed in time and the device may be stopped due to a shortage of parts, resulting in a decrease in the operating rate.

Therefore, an object of the present invention is to provide a component supply support method and a component supply support system in a component mounting line that can prevent a decrease in the equipment operating rate due to the occurrence of component shortage in the component mounting line.

The component supply support method in the component mounting line of the present invention is a component supply support method in a component mounting line including a component mounting device for taking out components supplied from each component feeder and mounting them on a board, and is a component supply support method for each of the component feeders. Selection to select a parts feeder whose part cut time prediction process for predicting the part cut time and the part cut time is between a predetermined warning start time and a warning examination start time preceding the warning start time. The process, the time when the parts replenishment work is started from the present time, the time when all the parts feeders within the warning start time finish the parts replenishment work, and the time when the parts out of any of the selected feeders are the first. The selected feeder when it is assumed that the parts replenishment work is started from the later of the time when the warning start time is reached and the parts replenishment work is performed for the selected feeder in the order of the earliest part cut time. If there is a first work end time prediction step for predicting the first parts replenishment work end time, and the selection feeder whose parts out time is before the first parts replenishment work end time, the warning starts. It includes a parts out-of-parts warning process that gives an out-of-parts warning in advance of time .

The component supply support system in the component mounting line of the present invention is a component supply support system in a component mounting line including a component mounting device that takes out components supplied from each component feeder and mounts them on a board. Selection to select a parts feeder that predicts the parts cut-out time and the parts cut-off time is between the predetermined warning start time and the warning examination start time preceding the warning start time. The time when all the parts feeders within the warning start time finish the parts replenishment work and the part cut time of any of the selected feeders are the first. The selected feeder when it is assumed that the parts replenishment work is started from the later of the time when the warning start time is reached and the parts replenishment work is performed for the selected feeder in the order of the earliest part cut time. If there is a first work end time prediction unit that predicts the end time of the first parts replenishment work and the selection feeder that has the parts out time before the end time of the first parts replenishment work, the warning starts. Includes a parts out warning unit that gives a parts out warning in advance of time .

According to the present invention, it is possible to prevent a decrease in the equipment utilization rate due to the occurrence of component shortage in the component mounting line.

Configuration explanatory view of the component mounting line according to the embodiment of the present invention Top view of the component mounting device according to the embodiment of the present invention Partial sectional view of the component mounting apparatus according to the embodiment of the present invention. Explanatory drawing of parts supply work in the tape feeder of one Embodiment of this invention A block diagram showing a configuration of a control system for a component mounting line according to an embodiment of the present invention. Explanatory drawing of worker data in component mounting line of one Embodiment of this invention The flow chart which shows the component supply support processing in the component mounting line of one Embodiment of this invention. FIG. 5 is a flow chart showing an examination of an early warning display of parts out of parts in the parts supply support process in the parts mounting line according to the embodiment of the present invention. Explanatory drawing of component supply support processing in component mounting line of one embodiment of the present invention Explanatory drawing of component supply support processing in component mounting line of one embodiment of the present invention Explanatory drawing of component supply support processing in component mounting line of one embodiment of the present invention Explanatory drawing of component supply support processing in component mounting line of one embodiment of the present invention A diagram showing (a) a warning display screen and (b) a diagram showing a warning notice display screen in the component supply support process in the component mounting line according to the embodiment of the present invention.

Next, an embodiment of the present invention will be described with reference to the drawings. First, the component mounting line will be described with reference to FIG. In FIG. 1, the component mounting line 1 has a function of mounting components on a board to manufacture a mounting board, and communicates by connecting each device of the printing device M1, the component mounting devices M2 to M4, and the reflow device M5. It is connected by the network 2 and the whole is controlled by the management computer 3.

The printing apparatus M1 screen-prints paste-like solder on the electrode for joining parts formed on the substrate. The component mounting devices M2 to M4 perform component mounting work in which components are taken out from the component feeders arranged in the component supply unit by a mounting head and transferred to a board for mounting. After that, the board on which the components are mounted is sent to the reflow device M5, and the mounted components are solder-bonded to the board to manufacture the mounted board. As described above, the component mounting line 1 includes component mounting devices M2 to M4 that take out the components supplied from each component feeder and mount them on the board.

Next, the configurations of the component mounting devices M2 to M4 will be described with reference to FIGS. 2 and 3. FIG. 3 partially shows the AA cross section in FIG. Hereinafter, the substrate transport direction (the left-right direction of the paper surface of FIG. 2) is the X direction, the direction orthogonal to the X direction in the horizontal plane (the vertical direction of the paper surface of FIG. 2) is the Y direction, and the direction orthogonal to the horizontal plane (the paper surface of FIG. 3). The vertical direction of) is defined as the Z direction.

In FIG. 2, a substrate transfer mechanism 5 is arranged in the X direction at the center of the base 4. The board transfer mechanism 5 conveys the board 6 carried in from the upstream side, and positions and holds the board 6 on the mounting stage set for executing the component mounting work. Parts supply units 7 are arranged on both sides of the board transfer mechanism 5, and a plurality of tape feeders 8 are mounted in parallel on each component supply unit 7. The tape feeder 8 supplies the component to the component suction position by the mounting head of the component mounting mechanism described below by pitch-feeding the carrier tape containing the component in the tape feeding direction.

A Y-axis beam 9 having a linear drive mechanism is arranged at one end of the upper surface of the base 4 in the X direction. Two X-axis beams 10 similarly provided with a linear drive mechanism are coupled to the Y-axis beam 9 so as to be movable in the Y direction. A mounting head 11 is mounted on each of the two X-axis beams 10 so as to be movable in the X direction. The mounting head 11 is a multi-unit type head provided with a plurality of holding heads 11a, and as shown in FIG. 3, the mounting heads 11 are sucked and held at the lower ends of the holding heads 11a so that they can be individually raised and lowered. The nozzle 11b is mounted.

By driving the Y-axis beam 9 and the X-axis beam 10, the mounting head 11 moves in the X direction and the Y direction. As a result, the two mounting heads 11 suck and hold the parts from the parts suction positions of the tape feeders 8 arranged in the corresponding parts supply units 7 by the suction nozzles 11b, take them out, and position the boards on the board transfer mechanism 5. Transfer and mount at the mounting point of 6. The Y-axis beam 9, the X-axis beam 10, and the mounting head 11 constitute a component mounting mechanism 12 for transferring and mounting the components on the substrate 6 by moving the mounting head 11 holding the components.

A component recognition camera 13 is arranged between the component supply unit 7 and the substrate transfer mechanism 5. When the mounting head 11 from which the component is taken out from the component supply unit 7 moves above the component recognition camera 13, the component recognition camera 13 captures and recognizes the component held by the mounting head 11. A substrate recognition camera 14 that moves integrally with the mounting head 11 is mounted on the lower surface of the X-axis beam 10.

When the mounting head 11 moves, the board recognition camera 14 moves above the board 6 positioned by the board transfer mechanism 5, and images and recognizes a board mark (not shown) formed on the board 6. In the component mounting operation on the board 6 by the mounting head 11, the mounting position correction is performed in consideration of the component recognition result by the component recognition camera 13 and the board mark recognition result by the board recognition camera 14.

As shown in FIG. 3, a carriage 15 in which a plurality of tape feeders 8 are previously mounted on the feeder base 15a is set in the component supply unit 7. The feeder base 15a is set with a feeder address for specifying the position of the feeder on which each tape feeder 8 is mounted. In the component mounting work, the components housed in the carrier tape 16 attached to each tape feeder 8 in the feeder base 15a are specified through these feeder addresses.

By clamping the feeder base 15a with respect to the base 4 by a clamping mechanism (not shown), the position of the carriage 15 is fixed in the component supply unit 7. The carriage 15 holds a supply reel 17 that stores the carrier tape 16 holding the parts in a wound state. The carrier tape 16 drawn from the supply reel 17 is pitch-fed by the tape feeder 8 to the component suction position by the suction nozzle 11b.

An operation / display unit 8a is arranged on the upper surface of the tape feeder 8 on the upstream side. The operation / display unit 8a is provided with an operation button for an operator to input a predetermined operation and a display means such as a 7-segment display for displaying a predetermined content. The operator can confirm the operating state of the tape feeder 8 and input the operation of a predetermined item by the operation / display unit 8a.

Next, the parts replenishment work in the tape feeder 8 will be described with reference to FIG. In the process of continuing the supply of parts by the tape feeder 8, when the number of parts of the carrier tape 16 (1) (hereinafter referred to as "preceding tape 16 (1)") attached to the tape feeder 8 decreases, a new one is added. Parts replenishment work for adding the carrier tape 16 (2) (hereinafter, referred to as “subsequent tape 16 (2)”) is executed.

In the splicing type tape feeder 8 shown in FIG. 4, parts replenishment work by splicing the end end of the leading tape 16 (1) and the leading end of the succeeding tape 16 (2) with a joining tape 18 (splicing tape). Is executed. The spliced subsequent tape 16 (2) is supplied to the tape feeder 8 from the tape introduction port 8b following the preceding tape 16 (1).

In FIG. 4, a bar code label L is attached to each supply reel 17 in advance. When the parts replenishment work is executed on the tape feeder 8, the barcode label L is read by the barcode reader 19. The read result is transmitted to the management computer 3 via the wireless communication device 40, and further transmitted from the management computer 3 to the component mounting devices M2 to M4 and from the component mounting devices M2 to M4 to the tape feeder 8 mounted on the component supply unit 7. (See Fig. 5). Further, the bar code reader 19 is provided with a display screen 19a, and information transmitted from the management computer 3 via the wireless communication device 40 can be displayed on the display screen 19a.

Next, with reference to FIG. 5, the configuration of the control system of the component mounting line 1 and the component supply support system in the component mounting line 1 will be described. Here, only the management computer 3 and the component mounting devices M2 to M4 are described, and the description of the other devices is omitted. The component mounting devices M2 to M4 are a mounting control unit 20, a storage unit 21, a board transfer mechanism 5, a component supply unit 7, a component mounting mechanism 12, a production state detection processing unit 24, a recognition processing unit 25, and an operation / input unit 26, respectively. , The display unit 27 is provided. The mounting control unit 20 controls each unit described below based on various control processing programs and data stored in the storage unit 21 to execute the component mounting work.

The mounting control unit 20 has an operation control function, controls the component supply unit 7, the board transfer mechanism 5, and the component mounting mechanism 12, and transfers the components taken out from the tape feeder 8 of the component supply unit 7 to the board transfer mechanism 5. The component mounting work to be mounted on the board 6 which is conveyed and positioned by When controlling the component mounting work, the mounting data 22 stored in the storage unit 21 is referred to.

In the process of executing the component mounting work, the production state detection processing unit 24 executes a process of detecting the production state in the device based on the operation monitoring function of the mounting control unit 20. The production status detection processing unit 24 has a production status detection function such as a component remaining number calculation function, a component consumption rate detection function, and a component scrap time prediction function, and the detection results are the component type data 23a and the remaining component number data 23b. , The production state detection data 23 including the component consumption rate data 23c and the component cutout time data 23d is stored in the storage unit 21 in real time.

The component type data 23a is data indicating the component type 16a of the component housed in the carrier tape 16 mounted on each tape feeder 8. The remaining number of parts data 23b is data indicating the number of remaining parts that can be supplied by each tape feeder 8, and is added according to the number of parts stored in the carrier tape 16 replenished during the parts replenishment work, and is added in the parts mounting work. It is subtracted by the number of parts consumed.

The parts consumption rate data 23c indicates the parts consumption rate in each tape feeder 8, that is, the number of parts consumed per unit time. Further, the component cut-off time data 23d indicates the component cut-out time Ts at which the tape feeder 8 is predicted from the number of remaining parts and the component consumption rate. That is, the production state detection processing unit 24 is a parts cut time prediction unit that predicts the parts cut time Ts of each tape feeder 8 (each part feeder).

As the parts feeder, in addition to the above-mentioned splicing type tape feeder 8, a splicing-less type tape feeder capable of replenishing the succeeding tape 16 (2) without splicing may be used. Further, a stick feeder for supplying the parts stored in the stick, a tray feeder for supplying the parts stored in the tray, and the like may be used.

The recognition processing unit 25 recognizes the imaging results of the component recognition camera 13 and the substrate recognition camera 14. As a result, the components held by the mounting head 11 are identified and their positions are detected, and the position of the board 6 positioned on the mounting stage of the board transport mechanism 5 is detected. When the component is transferred and mounted by the mounting head 11, the position of the component mounting point is corrected in consideration of these recognition results.

The operation / input unit 26 is an input device such as a touch panel or a numeric keypad, and performs an input operation at the time of data input or operation command input. The display unit 27 is a display means such as a touch panel, and displays predetermined items that need to be notified to the operator.

In this notification, it is predicted that the man-hours will be insufficient due to the information for identifying the tape feeder 8 which is predicted to be out of parts, the warning of the parts out time Ts, and the amount of work that cannot be completed even if the parts replenishment work is performed smoothly. Includes warnings and the like. Each of these units is connected to the management computer 3 via the communication unit 28 and the communication network 2 which are interfaces, whereby signals are exchanged between the component mounting devices M2 to M4 and the management computer 3.

The management computer 3 includes an overall control unit 30, a storage unit 31, a target feeder selection unit 36, a virtual work end time prediction unit 37a, a work end time prediction unit 37b, a parts shortage warning processing unit 38a, and a parts shortage early warning processing unit 38b. It includes a countdown processing unit 38c, a communication unit 39, and a wireless communication device 40. The overall control unit 30 controls and manages each device constituting the component mounting line 1 based on the processing program and data stored in the storage unit 31.

In the storage unit 31, production data 32, production state detection data 33, worker data 34, warning start time data 35a, warning examination start time data 35b, selection feeder data 35c, virtual work end time data 35d, work end time data 35e is stored. The production data 32 is data for executing the production work for component mounting, that is, the component mounting work in each device, and is set in the tape feeder 8 in the component supply unit 7 of each component mounting device M2 to M4. Contains feeder placement data that defines the placement of parts. Further, component supply unit addresses 7a (a2f, a2r, a3f, a3r, a4f, a4r) for specifying each are set in the component supply units 7 arranged at two locations in each component mounting device M2 to M4. There is.

A feeder address 7b (b1, b2, b3 ...) For specifying a mounting position of the tape feeder 8 in the parts supply unit 7 is set on the feeder base 15a of the carriage 15 set in the parts supply unit 7. Then, the feeder arrangement data is associated with the component types 16a (aaa, bbb, ccc ...) Indicating the types of components supplied by the tape feeder 8 mounted on the feeder address 7b. In the component mounting work, the tape feeder 8 to be taken out of the component is specified by designating the component supply unit address 7a and the feeder address 7b corresponding to the component type 16a to be mounted.

The production state detection data 33 stores the production state detection data 23 acquired and transmitted by the component mounting devices M2 to M4 for each device. The production state detection data 33 includes the component cut time Ts of each tape feeder 8 predicted by the component mounting devices M2 to M4 as the component cut time data 33a. The production state detection data 33 is updated at predetermined intervals such as every time the component mounting on one board 6 is completed in the component mounting devices M2 to M4.

The worker data 34 includes the skill level 34a of each worker, the line in charge 34b, and the working time 34c. Here, an example of the worker data 34 will be described with reference to FIG. In FIG. 6, the line 34b in charge of L1 has two workers, a skilled worker a having a skill level of 34a of "5" and a new worker b having a skill level of 34a of "1", and the line 34b in charge of L2 has a skill level of "1". Two mid-level workers c and workers d with a skill level of 34a of "3" are assigned. The skill level 34a indicates that the higher the number, the higher the skill level of the worker. The working time 34c is a standard working time required for each component replenishment work of replenishing the carrier tape 16 to the tape feeder 8, and depends on the skill level 34a of the operator. That is, the higher the skill level 34a, the shorter the working time 34c.

In FIG. 5, the warning start time data 35a starts displaying a “normal warning” for prompting the tape feeder 8 to be replenished with parts because the number of parts to be stored is small and the parts need to be replenished. Remember. The warning examination start time data 35b stores the warning examination start time Ta2 that precedes the warning start time Ta1. The warning examination start time Ta2 is set for the following purposes.

When there are many tape feeders 8 with close parts cut time Ts, if the parts replenishment work to the tape feeder 8 is started after the "normal warning" is displayed, the work will not be completed and the parts will be cut. The feeder 8 may occur. Even in such a case, by starting the parts replenishment work prior to the warning start time Ta1 or by increasing the number of workers and performing the parts replenishment work in parallel, the parts mounting line 1 can be stopped due to the parts running out. It may be possible to prevent it. Therefore, prior to the "normal warning", the "early warning" is displayed to encourage the tape feeder 8 to be replenished with parts at an early stage, and the "insufficient man-hours" warning is displayed to encourage the worker to request support. The warning examination start time Ta2 is set as the time to start the examination as to whether or not to perform the examination.

The target feeder selection unit 36 uses the tape feeder 8 whose parts cut time Ts is between the warning start time Ta1 and the warning examination start time Ta2 as the selection feeder F to be examined for the warning of "early warning" or "insufficient man-hours". Select. That is, the target feeder selection unit 36 uses the tape feeder 8 (parts feeder) whose parts cut time Ts is outside the predetermined warning start time Ta1 and within the warning examination start time Ta2 preceding the warning start time Ta1 as the selection feeder F. It becomes the selection department to select. The selected selection feeder F is stored in the storage unit 31 as the selection feeder data 35c.

The virtual work end time prediction unit 37a starts the parts supply work from the present time, and the parts out time Ts sets the warning start time Ta1 to the normal warning target feeder work end time Te1 in which all the tape feeders 8 finish the parts supply work. Predict. Then, the virtual work end time prediction unit 37a compares the normal warning target feeder work end time Te1 with the time when the tape feeder 8 having the earliest part shortage among the selected feeders reaches the warning start time Ta1. Then, the virtual work end time prediction unit 37a starts the parts replenishment work to each selected feeder F from the later time, and assumes that the parts replenishment work is performed in the order in which the parts run out earlier, and the parts in each selected feeder F are assumed. Predict the virtual work end time Tv at which the replenishment work ends.

That is, the virtual work end time prediction unit 37a starts the parts replenishment work from the present time, and the parts out time Ts is a warning. The time when all the tape feeders 8 (parts feeders) in the start time Ta1 finish the parts replenishment work (normal warning). The parts supply work is started from the later of the target feeder work end time Te1) and the time when the parts cut-out time Ts of one of the selected feeders F first reaches the warning start time Ta1, and the selected feeder F is targeted. This is the first work end time prediction unit that predicts the virtual work end time Tv (first parts replenishment work end time) of the selection feeder F when it is assumed that the parts replenishment work is performed in the order of the parts out time Ts. .. The predicted virtual work end time Tv is stored in the storage unit 31 as virtual work end time data 35d.

If there is a selection feeder F whose parts run out before the virtual work end time Tv, the work end time prediction unit 37b warns the parts out time Ts from the present time. The tape feeder 8 in the examination start time Ta2 is replenished with parts. Assuming that the parts replenishment work is performed in the order of starting and the parts being cut off earlier, the work end time Te at which the parts replenishment work in each tape feeder 8 is completed is predicted.

That is, if there is a selection feeder F whose part cut time Ts is before the virtual work end time Tv (first parts replenishment work end time), the work end time prediction unit 37b starts the parts replenishment work from the present time. Out-of-stock time Ts is a warning Examination start time The work end time Te (second) of the selected feeder F when it is assumed that the parts supply work is performed for the tape feeder 8 (parts feeder) in Ta2 in the order of the earliest parts out-of-time time Ts. This is the second work end time prediction unit that predicts the parts supply work end time). The predicted work end time Te is stored in the storage unit 31 as work end time data 35e.

When the virtual work end time prediction unit 37a and the work end time prediction unit 37b calculate the virtual work end time Tv and the work end time Te, the line 34b in charge of each worker in the worker data 34, the skill level 34a, and the work time 34c and the like are referred to. That is, the number of workers who can perform the parts supply work on the component mounting line 1 and the skill level 34a of each worker are taken into consideration. Thereby, the virtual work end time Tv and the work end time Te can be predicted more accurately. In this way, the virtual work end time Tv (first parts replenishment work end time) and work end time Te (second parts replenishment work end time) are set to the number of workers performing the parts replenishment work and the skill level 34a. Is based.

When there is a tape feeder 8 whose component cut time Ts is within the warning start time Ta1, the component shortage warning processing unit 38a issues a "normal warning" to the tape feeder 8 to prompt the component supply device M2 to M4. It is displayed on the display unit 27.

If there is no selection feeder F whose part cut time Ts is before the work end time Te, the parts shortage early warning processing unit 38b supplies parts to the selected feeder F whose work end time Te is within the warning start time Ta1. An "early warning" for prompting is displayed on the display unit 27 of the component mounting devices M2 to M4. In this way, the parts shortage early warning processing unit 38b displays the "early warning" target only for the selected feeder F whose work end time Te is within the warning start time Ta1. Therefore, the time spent by the worker to grasp the situation can be reduced and the work efficiency can be improved.

Further, if there is a selection feeder F whose part cut time Ts is set before the work end time Te, the parts shortage early warning processing unit 38b is early to the selection feeder F whose parts cut time Ts is set after the work end time Te. An "early warning" for prompting parts supply is displayed on the display unit 27 of the parts mounting devices M2 to M4. That is, if there is a selection feeder F whose part cut time Ts is set before the work end time Te (second part supply work end time), the parts out early warning processing unit 38b has the parts out time after the work end time Te. It is a second warning unit that warns the display unit 27 by displaying the parts supply for the selected feeder F to be Ts.

In this way, the second warning unit is the selection feeder F in which the parts out time Ts is set after the work end time Te, that is, the selection in which the parts are out of stock earlier than the selection feeder F to be warned of "insufficient man-hours" described below. All feeders F are displayed as "early warning" targets. Therefore, before the warning of "insufficient man-hours" is noticed and a support worker comes from another component mounting line 1 or the like, more component replenishment work should be performed by the worker of the component mounting line 1. It is possible to improve the possibility of avoiding the stoppage of the component mounting line 1 due to the component shortage.

Further, if there is a selection feeder F whose part cut time Ts is set before the work end time Te, the parts shortage early warning processing unit 38b can perform the parts supply work even if the parts supply work is smoothly performed up to the selection feeder F. A warning of "insufficient man-hours", which is predicted to be incomplete, is displayed on the display unit 27 of the component mounting devices M2 to M4.

That is, if there is a selection feeder F whose part cut time Ts is set before the work end time Te (second part supply work end time), the parts shortage early warning processing unit 38b displays the lack of man-hours for the selected feeder F. This is the first warning unit that is displayed on the unit 27 to warn. As a result, the worker of the component mounting line 1 can easily recognize that it is necessary to request support from a worker who has a margin such as another component mounting line 1.

When there is no tape feeder 8 that becomes a "normal warning" or "early warning", the countdown processing unit 38c sets the countdown time Tc until the "normal warning" or "early warning" is displayed on the component mounting devices M2 to M4. It is displayed on 27. That is, when the countdown processing unit 38c does not have the tape feeder 8 whose component cut time Ts is within the warning start time Ta1 and there is no selection feeder F whose component cut time Ts is earlier than the virtual work end time Tv, the tape feeder The normal warning start arrival time Tb1 until the parts cut time Ts of 8 reaches the warning start time Ta1 and the early warning start arrival time Tb2 until the parts cut time Ts of the selected feeder F reaches the virtual work end time Tv. The shortest time is displayed as the countdown time Tc.

The communication unit 39 is an interface and transmits / receives signals to / from the component mounting devices M2 to M4 via the communication network 2. The wireless communication device 40 receives information such as the barcode label L from the barcode reader 19, and transmits the notification information and the like from the management computer 3 to the barcode reader 19.

Next, the parts supply support method (parts supply support processing) in the component mounting line 1 of the present embodiment will be described with reference to FIGS. 9 to 13 according to the flow of FIGS. 7 and 8. In FIGS. 9 to 12, the tape feeders 8 mounted on the component mounting devices M2 to M4 are rearranged in order of earliest component cut time Ts, and are numbered for explanation. In the following description, each tape feeder 8 of FIGS. 9 to 12 is referred to as "tape feeder 8 (number for explanation)" by using a number for explanation.

First, in the component mounting devices M2 to M4, the production state detection processing unit 24 predicts the component cut-off time Ts of each tape feeder 8 (each part feeder) (ST1: component scrap time prediction step). The predicted out-of-parts time Ts is transmitted to the storage unit 31 of the management computer 3 and stored as the out-of-parts time data 33a. Next, in the management computer 3, the component shortage warning processing unit 38a determines whether or not the component shortage time Ts is the tape feeder 8 within the warning start time Ta1 (ST2).

When the parts cut-out time Ts is the tape feeder 8 within the warning start time Ta1 (Yes in ST2), the parts-out warning processing unit 38a displays a "normal warning" on the display unit 27 to prompt the tape feeder 8 to be replenished with parts. Display (ST3: Out of parts normal warning process).

In FIGS. 10 and 11, the tape feeders 8 (1) and 8 (2) within 30 minutes of the warning start time Ta1 with the parts out time Ts being the parts out normal warning target. FIG. 13A shows an example of a warning display displayed on the display unit 27 of the component mounting devices M2 to M4. On the warning display screen 27a, the warning content, the component supply unit address 7a, the feeder address 7b, the component type 16a, and the component cutout time Ts are displayed corresponding to the tape feeder 8 to be alerted.

In FIG. 13A, the tape feeders 8 (1) and 8 (2) in FIGS. 10 and 11 are displayed as the tape feeders 8 subject to the normal warning of out of parts. That is, the tape feeder 8 (1) is displayed as the tape feeder 8 whose component supply unit address 7a is a2f and whose feeder address 7b is b8, which is a normal warning target for out-of-parts. Then, the tape feeder 8 (2) is displayed as a tape feeder 8 whose component supply unit address 7a is a4f and whose feeder address 7b is b3, which is a normal warning target for out-of-parts.

In FIG. 7, when the part cut time Ts is not the tape feeder 8 within the warning start time Ta1 (No in ST2), the target feeder selection unit 36 warns that the part cut time Ts is outside the predetermined warning start time Ta1. The tape feeder 8 (parts feeder) within the warning examination start time Ta2 prior to the start time Ta1 is selected as the selection feeder F (ST4: selection process). In the example of FIG. 9, the tape feeders 8 (3) to 8 (7) in which the part cut time Ts is between the warning start time Ta1 (30 minutes) and the warning examination start time Ta2 (60 minutes) are used as the selection feeder F. Be selected.

Next, the virtual work end time prediction unit 37a starts the parts replenishment work from the present time, and the parts out time Ts warns the time when all the tape feeders 8 (parts feeders) in the start time Ta1 finish the parts replenishment work (normal warning). The parts supply work is started from the later of the target feeder work end time Te1) and the time when the parts cut-out time Ts of one of the selected feeders F first reaches the warning start time Ta1, and the selected feeder F is targeted. Assuming that the parts replenishment work is performed in the order of the parts out time Ts, the virtual work end time Tv (first parts replenishment work end time) of the selection feeder F is predicted (ST5: virtual work end time prediction process (ST5: virtual work end time prediction process). First work end time prediction process)).

In FIG. 9, it is assumed that the tape feeder 8 whose component cut time Ts is within the warning start time Ta1 and which is the target of the component shortage normal warning is that the component replenishment work is performed in the order of the component break time Ts. In that case, 15 minutes (B in FIG. 9) when the tape feeder 8 (2) having the slowest part cut time Ts finishes the parts replenishment work is usually the warning target feeder work end time Te1. In addition, the tape feeder 8 (3), which has the earliest component shortage among the selected feeders F, has a component cut time Ts (35 minutes) that exceeds the warning start time Ta1 (30 minutes) for 5 minutes (C in FIG. 9). Is the virtual work start time Td1.

In the virtual work end time prediction process (ST5), the normal warning target feeder work end time Te1 (15 minutes) and the virtual work start time Td1 (5 minutes) are compared, and the parts to each selected feeder F from the later of the time. Suppose you start replenishment work. In the example of FIG. 9, the virtual work end time Tv is predicted on the assumption that the parts supply work to each selected feeder F is started 15 minutes after the normal warning target feeder work end time Te1.

Next, the component shortage early warning processing unit 38b determines whether or not there is a selection feeder F having the component cut time Ts before the virtual work end time Tv (ST6). If there is a selection feeder F whose parts out time Ts is before the virtual work end time Tv (Yes in ST6), does the parts out early warning processing unit 38b have a tape feeder 8 to be displayed as a parts out early warning? (ST7). In FIG. 9, since the tape feeder 8 (6) has the parts cut-out time Ts before the virtual work end time Tv, it is determined as Yes in (ST6) and the early warning display of parts cut-out in (ST7) is examined. Will be done.

FIG. 8 shows a detailed flow of studying the early warning display of parts shortage in (ST7) in the parts supply support process. In the examination of the parts shortage early warning display, first, the work end time prediction unit 37b starts the parts supply work to the tape feeder 8 in the warning examination start time Ta2 from the present time, and the parts out of parts order Assuming that the parts replenishment work is performed, the work end time Te at which the parts replenishment work in each tape feeder 8 is completed is predicted (ST11: work end time prediction step).

That is, in the work end time prediction step (ST11) in the case of Yes in (ST6), when there is a selection feeder F in which the part cut time Ts is set before the virtual work end time Tv (first parts supply work end time). , When it is assumed that the parts replenishment work is started from the present time and the parts replenishment work is performed in the order of the earliest parts out time Ts for the tape feeder 8 (parts feeder) in the warning examination start time Ta2. This is the second work end time prediction step for predicting the work end time Te (second parts replenishment work end time) of the selected feeder F.

Next, the component shortage early warning processing unit 38b determines whether or not there is a selection feeder F having the component cut time Ts before the work end time Te (ST12). In FIG. 10, since the tape feeders 8 (3) to 8 (7), which are the selected feeders F, do not have the tape feeder 8 whose component cut time Ts precedes the work end time Te, it is determined as No in (ST12). ..

When there is no selection feeder F whose part cut time Ts is before the work end time Te (No in ST12), the parts shortage early warning processing unit 38b is the selection feeder F whose work end time Te is within the warning start time Ta1. Whether or not it is determined (ST13). When the work end time Te is the selected feeder F in the warning start time Ta1 (Yes in ST13), the parts shortage early warning processing unit 38b indicates that the work end time Te is the early stage to the selected feeder F in the warning start time Ta1. An "early warning" prompting parts supply is displayed on the display unit 27 (ST14: first early warning step for parts shortage).

In the example of FIG. 10, the tape feeders 8 (3) and 8 (4) whose work end time Te is within the warning start time Ta1 are subject to the early warning of parts shortage. In FIG. 13A, the tape feeders 8 (3) and 8 (4) of FIG. 10 have a component supply unit address 7a a2r, a feeder address 7b b5, a component supply unit address 7a a3f, and a feeder address 7b, respectively. Is displayed as the tape feeder 8 subject to the early warning of out of parts of b1.

In FIG. 8, when the work end time Te is not the selected feeder F within the warning start time Ta1 (No in ST13), the warning is not displayed as the tape feeder 8 not subject to the warning. In FIG. 10, it is determined that the tape feeders 8 (5) to 8 (7), which are the selected feeders F whose work end time Te is not within the warning start time Ta1, are not subject to the warning.

In FIG. 8, when there is a selection feeder F in which the part cut time Ts is set before the work end time Te (Yes in ST12), the parts cut early warning processing unit 38b sets the part cut time Ts before the work end time Te. It is determined whether or not the selected feeder F is (ST15). If the selected feeder F does not have the parts out time Ts before the work end time Te (No in ST15), the parts out early warning processing unit 38b prompts the selected feeder F to replenish the parts at an early stage. Is displayed on the display unit 27 (ST16: second part shortage early warning step).

That is, in the second component shortage early warning step (ST16) in the case of No in (ST15), the selection feeder F whose component cut time Ts is set before the work end time Te (second component replenishment work end time) In some cases, this is the second warning step in which the display unit 27 displays the parts supply for the selected feeder F, which is the parts out time Ts after the work end time Te, and warns.

In the example of FIG. 11, since the tape feeder 8 (6), which is the selection feeder F, has the component cut-out time Ts before the work end time Te, it is determined to be Yes in (ST12). Then, the tape feeders 8 (3) to 8 (5), which are the selection feeders F in which the parts out time Ts is set after the work end time Te, are subject to the early warning of parts out. In FIG. 13A, the tape feeders 8 (3) to 8 (5) of FIG. 11 are displayed as tape feeders 8 subject to early warning of parts shortage.

In FIG. 8, when the selected feeder F has the parts cut-out time Ts before the work end time Te (Yes in ST15), the parts shortage early warning processing unit 38b smoothly executes the parts supply work up to the selected feeder F. Even if this is done, a warning of "insufficient man-hours", which is predicted that the parts supply work cannot be completed, is displayed on the display unit 27 (ST17: insufficient man-hours warning process). That is, in the man-hour shortage warning step (ST17), if there is a selection feeder F whose part cut time Ts is before the work end time Te (second parts replenishment work end time), the display unit indicates that the man-hours are insufficient for the selected feeder F. This is the first warning step of displaying on 27 to give a warning.

In FIG. 11, the tape feeder 8 (6) whose part cut time Ts is set before the work end time Te is subject to the man-hour shortage warning. In FIG. 13A, the tape feeder 8 (6) of FIG. 11 is displayed as the tape feeder 8 subject to the man-hour shortage warning.

As described above, in the warning display of FIG. 13A, the information of the tape feeder 8 which is the target of the normal warning, the early warning (second warning), and the man-hour shortage warning (first warning) is displayed on the warning display screen 27a. It is displayed in. The normal warning surrounded by the alternate long and short dash line 51, the early warning surrounded by the alternate long and short dash line 52, and the insufficient man-hour warning surrounded by the alternate long and short dash line 53 are visually displayed by changing the font color or blinking. It is displayed so that it can be distinguished.

That is, the normal warning of the parts shortage warning processing unit 38a, the early warning of the parts shortage early warning processing unit 38b (second warning unit), and the man-hour shortage warning of the parts shortage early warning processing unit 38b (first warning unit). It is displayed on the display unit 27 so that it can be visually distinguished. As a result, the operator can easily identify the state of the tape feeder 8 that requires the component supply work on the component mounting line 1.

Further, in FIG. 13A, the parts shortage warning processing unit 38a and the parts shortage early warning processing unit 38b (first warning unit and second warning unit) warn the tape feeder 8 (parts feeder) of the parts out time. Ts is displayed on the display unit 27. As a result, the operator can determine the order of the parts replenishment work of the tape feeder 8 with reference to the parts out time Ts, and can efficiently execute the parts replenishment work.

Note that these warning displays may be displayed on the display screen 19a of the barcode reader 19 via the wireless communication device 40. By doing so, even an operator who is away from the component mounting line 1 can know the component cut-out time Ts of the tape feeder 8 to be warned. Further, by displaying the display of the man-hour shortage warning on the display screen 19a of the bar code reader 19 of the worker who is not in charge of the component mounting line 1, it is possible to request the support of the worker who can afford it.

In FIG. 7, when there is no selection feeder F whose part cut time Ts is before the virtual work end time Tv (No in ST6), the countdown processing unit 38c is the remaining until the tape feeder 8 displays the normal warning or the early warning. The countdown time Tc, which is the time, is displayed on the display unit 27 of the component mounting devices M2 to M4 (ST8).

In the example of FIG. 12, the parts out time Ts is set after the virtual work end time Tv in all the selected feeders F. In this case, the normal warning start arrival time Tb1 (D in FIG. 12) until the parts out time Ts of the tape feeder 8 (1), which is the earliest in the selected feeder F, reaches the warning start time Ta1. Is calculated. Further, the early warning start arrival time Tb2 (E4, E5, etc. in FIG. 12) until the component cut-out time Ts of each selected feeder F reaches the virtual work end time Tv is also calculated. Then, the shortest time among the normal warning start arrival time Tb1 and the early warning start arrival time Tb2 is set as the countdown time Tc.

As shown in FIG. 13B, the display unit 27 receives a comment 54 including a countdown time Tc (10 minutes) until the countdown time Tc becomes zero and the screen switches to the warning display screen 27a shown in FIG. 13A. It is displayed as a warning notice display screen 27b. As a result, the worker can know the time allowance until the parts replenishment work is started, and while referring to this time allowance, the work on the part mounting line 1 in charge of the transportation and cleaning work of the replenishment parts, other than the person in charge. It is possible to perform work such as support for parts replenishment work on the part mounting line 1 of.

The above-mentioned component supply support processes (ST1 to ST17) are repeatedly performed in the process of continuing the component mounting work in the component mounting devices M2 to M4, for example, every time the component mounting on one board 6 is completed. The tape feeder 8 for which the parts replenishment work has been completed is excluded from the list of the warning display screen 27a because the number of remaining parts is added according to the number of replenished parts and the parts out time Ts also increases significantly. The operator can efficiently perform the component replenishment work by referring to the latest information on the component mounting line 1.

As described above, the virtual work start time Td1 allows consideration of the parts cut-out time Ts of the selection feeder F, which is a display candidate for the parts shortage early warning. Further, according to the normal warning target feeder work end time Te1, the parts supply work time of the tape feeder 8 within the warning start time Ta1 can be taken into consideration when the parts out time Ts preceding the selected feeder F is set. As a result, the virtual work end time Tv predicted in consideration of both the normal warning target feeder work end time Te1 and the virtual work start time Td1 can be used to determine whether or not to consider the early warning display of parts out of parts. The effect is obtained.

For example, if there are a large number of tape feeders 8 preceding the selected feeder F, the margin of the normal warning target feeder work end time Te1 with respect to the warning start time Ta1 decreases. Even in such a situation, if it is judged whether or not it is necessary to consider the early warning display of parts out of parts only by the virtual work start time Td1, if there is a margin in the virtual work start time Td1, it is not necessary to start the parts supply work to the selected feeder F early. Will be judged. In the present embodiment, both the normal warning target feeder work end time Te1 and the virtual work start time Td1 are taken into consideration. Therefore, even in such a situation, it is appropriate to consider whether or not to start the parts supply work to the selected feeder F at an early stage. It is possible to avoid the occurrence of parts shortage by making a judgment and encouraging early parts supply.

As described above, the parts supply support method and the parts supply support system in the parts mounting line of the present embodiment predict the parts cut-off time Ts of each tape feeder 8 (each part feeder), and the parts cut-out time Ts is predetermined. The tape feeder 8 outside the warning start time Ta1 and within the warning examination start time Ta2 preceding the warning start time Ta1 is selected as the selection feeder F. Then, the parts out time Ts is the time when all the tape feeders 8 in the warning start time Ta1 finish the parts replenishment work, and the time when the parts out time Ts of any of the selected feeders F first reaches the warning start time Ta1. Assuming that the parts replenishment work is started from the later of the two, and the parts replenishment work is performed for the selected feeder F in the order of the earliest part cut time Ts, the virtual work end time Tv of the selected feeder F (No. The end time of parts replenishment work in 1) is predicted.

Then, if there is a selection feeder F whose part cut time Ts is set before the virtual work end time Tv, the parts supply work is started from the present time, and the parts cut time Ts targets the tape feeder 8 within the warning examination start time Ta2. The work end time Te (second part replenishment work end time) of the selected feeder F is predicted on the assumption that the parts replenishment work is performed in the order of the parts out time Ts. Then, when there is a selection feeder F whose part cut time Ts is set before the work end time Te, a warning is given that the number of man-hours for the selection feeder F is insufficient.

As a result, the operator can notice at an early stage that there are many tape feeders 8 that are out of parts and the amount of work cannot be completed even if the work is smoothly performed (insufficient man-hours). Then, by requesting support from workers in charge of other lines and increasing the work man-hours, it is possible to prevent the device from stopping due to parts shortage, and the equipment utilization rate due to the occurrence of parts shortage in the parts mounting line 1 can be prevented. It is possible to prevent the decrease.

The component supply support method and the component supply support system in the component mounting line of the present invention have an effect of being able to prevent a decrease in the equipment operating rate due to the occurrence of component shortage in the component mounting line, and are arranged in the component supply unit. It is useful in the field of component mounting in which the components taken out from the parts feeder are transferred and mounted on the board.

1 Parts mounting line 6 Board 8 Tape feeder (parts feeder)
24 Production status detection processing unit (parts out time prediction unit)
36 Target feeder selection department (selection department)
37a Virtual work end time prediction unit (first work end time prediction unit)
37b Work end time prediction unit (second work end time prediction unit)
38b Out of parts early warning processing unit (first warning unit, second warning unit)
F Selection feeder M2 to M4 Parts mounting device Ta1 Warning start time Ta2 Warning examination start time Te Work end time (Second parts supply work end time)
Ts parts out time Tv virtual work end time (first parts replenishment work end time)

Claims (10)

It is a component supply support method in a component mounting line equipped with a component mounting device that takes out the components supplied from each component feeder and mounts them on the board.
The parts cut-out time prediction process for predicting the parts cut-out time of each part feeder,
A selection process of selecting a parts feeder whose part cut time is between a predetermined warning start time and a warning examination start time preceding the warning start time as a selection feeder, and
The time when the parts replenishment work is started from the present time and the parts out time is the time when all the parts feeders within the warning start time finish the parts replenishment work, and the parts out time of any of the selected feeders is the first warning. The first of the selected feeders when it is assumed that the parts replenishment work is started from the later of the time to reach the start time and the parts replenishment work is performed for the selected feeder in the order of the earliest part cut time. The first work end time prediction process for predicting the parts supply work end time of
When there is the selected feeder whose part cut time is set before the first part supply work end time, it is characterized by including a part cut warning step of issuing a part cut warning prior to the warning start time. Parts supply support method in the parts mounting line. If there is the selected feeder whose part cut time is set before the first parts supply work end time, the parts supply work is started from the present time, and the parts feeder within the warning examination start time is targeted. a second end-of-work time prediction step of predicting when it is assumed to perform the part supplying work, the second component supplying work completion time of the selected feeder in order the unit run out time is earlier as,
The first aspect of claim 1, wherein when there is a selection feeder whose part cut time is set before the end time of the second parts replenishment work, a man-hour shortage warning step for warning the man-hour shortage for the selected feeder is included. Parts supply support method in the parts mounting line. The parts supply support method in the parts mounting line according to claim 2, wherein the first parts supply work end time and the second parts supply work end time are based on the number of workers performing the parts supply work. .. In the component shortage warning step, if there is a selection feeder that has the component cut time before the second component supply work end time, the component cut time is set after the second component supply work end time. Warn of parts supply to the selected feeder,
The component supply support method in a component mounting line according to claim 2 or 3 , wherein the warning of the man-hour shortage warning process and the warning of the component shortage warning process are displayed so as to be visually distinguishable. The component supply support method in a component mounting line according to claim 4 , wherein in the man-hour shortage warning step or the component shortage warning step, the component cut time of the warning component feeder is displayed. It is a parts supply support system in a parts mounting line equipped with a parts mounting device that takes out the parts supplied from each parts feeder and mounts them on the board.
The parts out-of-parts time prediction unit that predicts the out-of-parts time of each part feeder,
A selection unit that selects a parts feeder whose part cut time is between a predetermined warning start time and a warning examination start time preceding the warning start time as a selection feeder.
The time when the parts replenishment work is started from the present time and the parts out time is the time when all the parts feeders within the warning start time finish the parts replenishment work, and the parts out time of any of the selected feeders is the first warning. The first of the selected feeders when it is assumed that the parts replenishment work is started from the later of the time when the start time is reached and the parts replenishment work is performed for the selected feeder in the order of the earliest part cut time. The first work end time prediction unit that predicts the parts supply work end time of
When there is the selected feeder that has the parts out time before the first parts replenishment work end time, it is characterized by including a parts out warning unit that gives a parts out warning prior to the warning start time. Parts supply support system in the parts mounting line. If there is the selected feeder that has the parts cut time before the first parts supply work end time, the parts supply work is started from the present time, and the parts feeder within the warning examination start time is targeted. a second end-of-work time prediction unit that predicts when it is assumed to perform the component supplying work the portion out of stock time in chronological order, the second component supplying work completion time of the selected feeder as,
The sixth aspect of claim 6 , wherein if there is a selection feeder whose part cut time is set before the end time of the second parts replenishment work, a man-hour shortage warning unit for warning the man-hour shortage for the selected feeder is included. Parts supply support system in the parts mounting line. The parts supply support system in the parts mounting line according to claim 7, wherein the first parts supply work end time and the second parts supply work end time are based on the number of workers performing the parts supply work. .. If there is a selection feeder that has the parts cut time before the second parts supply work end time, the parts cut warning unit has the parts cut time after the second parts supply work end time. Warn of parts supply to the selected feeder,
The component supply support system in the component mounting line according to claim 7 or 8 , wherein the warning of the man-hour shortage warning section and the warning of the component shortage warning section are displayed so as to be visually distinguishable. The parts supply support system in a parts mounting line according to claim 9 , wherein the man-hour shortage warning unit or the parts shortage warning unit displays the parts out time of the parts feeder to be warned.

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