JP7422283B2 - Production index display method and production control device - Google Patents

Description

The present invention relates to a production index display method and a production management device for displaying production indexes for producing multiple types of products on a production line.

On a production line in which products such as mounted boards, in which components are mounted on boards, are transported through multiple production facilities, a production plan is created so that multiple types of products are produced. When creating a production plan, the cycle time required to produce a product is calculated, and the production plan is created using the cycle time. Patent Document 1 describes how to obtain the cycle time of each production equipment that constitutes a production line and create a production plan in which other production equipment is configured so as not to exceed the cycle time of the production equipment that is a bottleneck. Are listed.

International Publication No. 2014/041686

However, when producing multiple types of products continuously, some types require switching between types by stopping the operation of the production equipment and changing the configuration of the production equipment, so it is necessary to create a highly accurate production plan. However, there was a problem in that a production index was needed to create a production plan that took into account time other than product production time, such as the time for changing types.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a production index display method and a production management device that can provide production indexes that are closer to actual production.

The production index display method of the present invention is a production index display method for displaying a production index indicating the production capacity for producing multiple types of products on a production line in which multiple production facilities that transport workpieces and carry out production work are connected. A first production index is calculated based on the production time and the switching time of the product for each of the plurality of products whose production is planned for a predetermined period, and the first production index is calculated based on the first production index and the production during the predetermined period. The planned production times for each of the plurality of types are displayed together, and the production times for each of the plurality of types are displayed in a plurality of first shapes corresponding to the lengths of the production times.

The production control device of the present invention is a production control device that displays a production index indicating the production capacity to produce a plurality of types of products on a production line in which a plurality of production facilities that transport workpieces and carry out production work are connected. , a production time calculation unit that calculates the production time for each of the plurality of products whose production is planned in a predetermined period; and a first production index based on the production time and the product switching time for each of the plurality of products. and a display unit that displays the first production index and the production time for each of the plurality of products planned to be produced in the predetermined period. , the production time for each of the plurality of products is displayed in a plurality of first shapes depending on the length of the production time.

According to the present invention, it is possible to provide a production index that is closer to actual production.

Configuration explanatory diagram of a component mounting system according to an embodiment of the present invention A configuration explanatory diagram of a component mounting line provided in a component mounting system according to an embodiment of the present invention An explanatory diagram of production time in a component mounting line provided in a component mounting system according to an embodiment of the present invention An explanatory diagram of standby time in a component mounting apparatus included in a component mounting system according to an embodiment of the present invention A block diagram showing the configuration of a management computer (production management device) according to an embodiment of the present invention A diagram showing an example of a production index display screen displayed on a display unit included in a management computer (production management device) according to an embodiment of the present invention. A diagram showing a flow of a production index display method according to an embodiment of the present invention

An embodiment of the present invention will be described in detail below with reference to the drawings. The configuration, shape, etc. described below are examples for explanation, and can be changed as appropriate depending on the specifications of the component mounting system, component mounting line, printing device, and component mounting device. Hereinafter, corresponding elements in all drawings will be denoted by the same reference numerals, and redundant explanation will be omitted. In FIG. 2, the right side of the page is referred to as the upstream side in the substrate conveyance direction, the left side of the page is referred to as the downstream side in the substrate conveyance direction, the lower side of the page is referred to as the front side, and the upper side of the page is referred to as the rear side.

First, the configuration of the component mounting system 1 will be explained with reference to FIG. The component mounting system 1 has a configuration in which four component mounting lines L1 to L4 arranged on a floor F are connected by a wired or wireless communication network 2 and are managed by a management computer 3. Each of the component mounting lines L1 to L4 is configured by connecting a plurality of production facilities including component mounting devices, as will be described later, and has a function of manufacturing a mounted board in which components are mounted on a board. Note that the component mounting system 1 does not need to have four component mounting lines, and may have one, two, three, or five or more lines.

Next, the detailed configuration of the component mounting lines L1 to L4 will be explained with reference to FIG. The component mounting lines L1 to L4 have similar configurations, and the component mounting line L1 will be described below. The component mounting line L1 includes substrate supply devices M1F, M1R, printing device M2, component mounting device M3, component mounting device M4, substrate sorting device M5, reflow devices M6F, M6R, and substrates arranged from the upstream side to the downstream side. The collection devices M7F and M7R are connected through a communication network 2, and the entire system is controlled by a management computer 3.

The printing device M2, the component mounting device M3, the component mounting device M4, and the board sorting device M5 include a front transport lane 5F and a rear transport lane 5R for transporting the boards 4. In the printing device M2, the component mounting device M3, the component mounting device M4, and the board sorting device M5, the front transportation lane 5F is connected to the front transportation lane 5F of the adjacent device, and the rear transportation lane 5R is connected to the front transportation lane 5F of the adjacent device. It is mutually connected to the conveyance lane 5R on the rear side of the device.

In FIG. 2, a transport lane 5F provided in the front substrate supply device M1F is connected to a transport lane 5F on the front side of the printing device M2. A transport lane 5R provided in the rear substrate supply device M1R is connected to a transport lane 5R on the rear side of the printing device M2. The substrate supply devices M1F and M1R are equipped with a supply mechanism 6 including a storage section such as a rack for storing a plurality of substrates 4 as workpieces, and the supply mechanism 6 transfers the substrates 4 taken out from the storage section to a downstream device. Perform board supply work. That is, the front substrate supply device M1F supplies the substrate 4 to the front transportation lane 5F of the printing device M2, and the rear substrate supply device M1R supplies the substrate 4 to the rear transportation lane 5R of the printing device M2.

The printing device M2 includes a front printing mechanism 7F including a front transport lane 5F and a rear printing mechanism 7R including a rear transport lane 5R. The two printing mechanisms 7F and 7R each perform a solder printing operation of printing (depositing) solder on the electrodes of the substrate 4 brought in from the upstream side through a mask. Note that the printing mechanisms 7F and 7R may be configured to deposit solder on the substrate 4 using a dispenser. In the printing apparatus M2, when the type of mounting board (product) to be produced is changed, an operator performs setup work such as replacing a mask.

Furthermore, the two printing mechanisms 7F and 7R included in the component mounting line L1 are not limited to the configuration including the printing device M2 having the two printing mechanisms 7F and 7R. For example, two printing apparatuses each having one printing mechanism may be arranged back to back and connected to the front transport lane 5F and the rear transport lane 5R, respectively.

In FIG. 2, the component mounting apparatuses M3 and M4 each include component supply sections 8 in front of the front transport lane 5F and behind the rear transport lane 5R. A plurality of tape feeders 9 are set in the component supply section 8 and lined up in the board transport direction. The tape feeder 9 pitch-feeds the components held on the carrier tape and supplies them to pickup positions by the mounting heads 10F and 10R.

The mounting heads 10F and 10R are moved in the horizontal direction by a head moving mechanism (not shown), pick up the components supplied from the component supply section 8 with suction nozzles, and transfer them to the front transport lane 5F or the rear transport lane 5R. It is mounted on the board 4 positioned at the mounting work position. That is, the mounting heads 10F and 10R have multiple lanes (front transport lane 5F, rear transport lane 5R) for transporting workpieces (substrates 4) arranged in parallel, and workpieces to be transported to the plurality of lanes. It is a work means for performing production work (component mounting work). In this way, the component mounting apparatuses M3 and M4 mount components on the substrate 4 (workpiece) on which solder is deposited using the mounting heads 10F and 10R.

The component mounting work by the mounting heads 10F, 10R is controlled by a control section included in the component mounting apparatuses M3, M4, and is executed in a plurality of modes such as an independent mounting mode and an alternate mounting mode depending on the type of mounting board to be produced. In the independent mounting mode, the front mounting head 10F mounts components on the board 4 positioned at the mounting work position of the front transport lane 5F, and the rear mounting head 10R is located at the mounting work position of the rear transport lane 5R. Components are mounted on the positioned board 4. In the independent mounting mode, the timing at which each mounting head 10F, 10R mounts a component on the board 4 is independent of each other, and the moving distance of each mounting head 10F, 10R during component mounting work is short, so the work efficiency of component mounting is high. There is a characteristic that

In the alternate mounting mode, the front mounting head is attached to either the board 4 positioned at the mounting work position of the front transport lane 5F or the board 4 positioned at the mounting work position of the rear transport lane 5R. The mounting head 10F and the rear mounting head 10R alternately mount components. In the alternate mounting mode, while one mounting head 10F, 10R is picking up components on the tape feeder 9, the other mounting head 10F, 10R is mounting components on the board 4, thereby improving work efficiency. be able to. In addition, while the board 4 is being transported on one transport lane 5F, 5R, components are mounted on the board 4 positioned at the mounting work position on the other transport lane 5F, 5R, improving work efficiency. can be achieved.

In the alternate mounting mode, while components are being mounted on the board 4 positioned on one transport lane 5F, 5R, the board 4 to be mounted next is mounted on the other transport lane 5F, 5R. When the positioning is completed, the next board 4 needs to wait until component mounting on the board 4 positioned on one of the transport lanes 5F, 5R is completed. That is, the work means (mounting heads 10F, 10R) performs production work on the workpiece (board 4) transported to one of the plurality of lanes (front transport lane 5F, rear transport lane 5R). During this process, a work waiting time Tw (second waiting time) occurs during which the workpiece transported to another lane among the plurality of lanes waits for production work by the working means.

In the component mounting apparatuses M3 and M4, when the type of mounted board to be produced is changed, an operator performs setup work such as replacing the tape feeder 9 and replacing the suction nozzle. Note that if the tape feeder 9 that supplies components to be mounted on the changed mounting board is already set in the component supply section 8, replacing the tape feeder 9 during setup work can be omitted. Furthermore, the number of component mounting devices M3 and M4 provided in the component mounting line L1 does not need to be two, and may be one or three or more.

In FIG. 2, the board sorting device M5 includes a board passing mechanism that receives the board 4 from the transport lane 5F on the front side of the component mounting apparatus M4 and delivers it to the transport lane 5F of the reflow apparatus M6F on the front side. Further, the board sorting device M5 moves the board 4 received from the transfer lane 5R on the rear side of the component mounting device M4 to the rear side (arrow a), and transfers the substrate to the transfer lane 5R of the rear reflow device M6R. Equipped with a mechanism.

The substrate sorting device M5 is a device that transfers the substrates 4 by absorbing the positional deviation between the transfer lanes 5F and 5R of the component mounting device M4 on the upstream side and the reflow devices M6F and M6R on the downstream side. Therefore, if the positions of the transport lanes 5F and 5R of the component mounting apparatus M4 and the reflow apparatuses M6F and M6R are the same, the positions of the transport lanes 5F and 5R of the component mounting apparatus M4 and the reflow apparatuses M6F and M6R can be changed without using the board sorting apparatus M5. may be directly connected.

In FIG. 2, reflow devices M6F and M6R heat the board 4 on which components are mounted while transporting the board 4 from the upstream side to the downstream side, melt the solder, and then solidify it to solder the components to the board 4. A reflow mechanism 11 is provided. The transport lane 5F provided in the front reflow apparatus M6F is connected to the transport lane 5F provided in the front substrate recovery apparatus M7F. The transport lane 5R included in the rear reflow apparatus M6R is connected to the transport lane 5R provided in the rear substrate recovery apparatus M7R.

The substrate recovery devices M7F and M7R are equipped with a recovery mechanism 12 that includes a storage section such as a rack for storing a plurality of substrates 4, and the recovery mechanism 12 receives the substrates 4 carried out by the upstream device and collects them in the storage section. Perform board recovery work. That is, the front substrate recovery device M7F recovers the substrates carried out by the front reflow device M6F, and the rear substrate recovery device M7R recovers the substrates 4 carried out by the rear reflow device M6R. In this way, the component mounting lines L1 to L4 are production lines in which a plurality of production facilities are connected to carry out production work by transporting workpieces (boards 4).

Next, with reference to FIGS. 2 to 4, a procedure for producing mounted boards on the component mounting line L1 will be described. First, an example of producing a double-sided mounting board in which components are mounted on both sides of the board 4 on the component mounting line L1 will be described. FIG. 3 shows the production of mounting boards in the component mounting line L1 in chronological order. Hereinafter, the front transport lane 5F in the component mounting line L1 will be referred to as lane L1F, and the rear transport lane 5R will be referred to as lane L1R.

In FIG. 3, first, in the component mounting line L1, setup work for producing double-sided mounting boards (lot A) of type aa is performed. Specifically, the mask is replaced in the printing device M2, the tape feeder 9 is replaced in the component mounting devices M3 and M4, the suction nozzle is replaced, and the heating conditions in the reflow devices M6F and M6R are changed. The type change time required for switching from the previous type to type aa is referred to as setup work time Tc1. By the setup work, preparations for mounting components on the front side of the board 4 in the front lane L1F and mounting components on the back side of the board 4 in the rear lane L1R are completed.

In the production of double-sided mounting boards of type aa, an operator first stores a plurality of boards 4 with the front side facing upward in the storage section of the front board supply device M1F. Hereinafter, the substrate 4 with the front side facing upward will be referred to as lot A_T. When the board 4 of lot A_T is set, the front board supply device M1F supplies the board 4 to the downstream printing device M2, and the printing device M2 prints solder on the front side of the board 4 by the front printing mechanism 7F. (accumulate. Next, the component mounting apparatuses M3 and M4 mount components on the front side of the board 4 positioned on the front transport lane 5F in an alternate mounting mode.

Next, the board 4 is transferred to the front reflow device M6F via the board sorting device M5, and the components are soldered by the front reflow device M6F. Next, the board 4 with components soldered on the front side is collected into the storage section of the front board collection device M7F. In the front lane L1F, when the storage section of the front substrate supply device M1F becomes empty, the operator sets the substrates 4 of lot A_T in the storage section. In this way, in the front lane L1F, components are soldered to the front side of the board 4 of lot A_T, and are sequentially stored in the storage section of the front board collection device M7F.

In FIG. 3, when a predetermined number (for example, 10) of substrates 4 are collected in the storage section of the front substrate collection device M7F, the operator carries the collected substrates 4 to the rear substrate supply device M1R (arrow b) Store the substrate 4 in the storage section of the rear substrate supply device M1R with the back side facing upward. Hereinafter, the substrate 4 with the back side facing upward will be referred to as lot A_B. Note that an automatic transport device may transport the substrate 4 from the front substrate collection device M7F to the rear substrate supply device M1R.

When the substrate 4 of lot A_B is set, the subsequent substrate supply device M1R supplies the substrate 4 to the downstream printing device M2, and the printing device M2 applies solder to the back side of the substrate 4 by the printing mechanism 7R on the rear side. Print (deposit). Next, the component mounting devices M3 and M4 mount components on the back side of the board 4, and the components are soldered by the rear reflow device M6R. Next, the board 4 (double-sided mounting board) with components soldered on both sides is collected into the storage section of the rear board collection device M7R. When a predetermined number of substrates 4 are collected in the storage section of the rear substrate collection device M7R, the operator takes out the substrates 4 from the storage section.

In this way, components are mounted on the front side of the board 4 (workpiece) (first production work) in the front lane L1F (first lane) of the component mounting line L1, and the components are mounted on the front side of the component mounting line L1. In lane L1R (another lane), components are mounted on the back side of the board 4 (workpiece) (second production work).

In FIG. 3, the production time Tpa required for component mounting work on both sides of the board 4 of lot A in the component mounting line L1 starts from the time when the first board 4 is set on the front board supply device M1F to the time when the rear board is recovered. This is the time until the last board 4 with components mounted on both sides is collected by the device M7R. That is, the production time Tpa is the time from when the production work is started on one of the plurality of lanes L1F and L1R until the production work is finished on all the plurality of lanes L1F and L1R.

FIG. 4 shows details of the component mounting work in the component mounting apparatus M3 in the production of double-sided mounting boards of type aa. While component mounting work (hereinafter simply referred to as "mounting T") is being performed on the front surface side of the board 4u in the front transport lane 5F in the alternate mounting mode, the front transport lane 5R is being In lane L1F, the board 4a with components mounted on the front side is carried to the mounting work position with the back side facing upward. When the mounting T of the board 4u is completed, component mounting work (hereinafter simply referred to as "mounting B") in the alternate mounting mode on the back side of the board 4a is started in the rear transport lane 5R.

That is, from the time the board 4a is positioned at the mounting work position until the end of the mounting T of the board 4u, the board 4a (work) waits for the mounting heads 10F, 10R (work means) to start mounting B (production work). A waiting time Tw1 (second waiting time) occurs. During the mounting B of the board 4a, the transport lane 5F on the front side carries out the unloading of the board 4u and the loading of the next board 4v. When the mounting B of the board 4a is completed, the mounting T of the board 4v is started. That is, after the board 4v is carried in, the mounting T of the board 4v is started after a work standby time Tw2.

In FIG. 4, during the mounting T of the board 4v, the transport lane 5R on the rear side carries out the unloading of the board 4a and the loading of the next board 4b, and after the work standby time Tw3, the mounting B of the board 4b is started. On the other hand, when the mounting T of the board 4v is completed, the previous board 4u remains in the transport lane 5F on the front side of the downstream component mounting device M4 due to reasons such as component mounting work, error processing, waiting for unloading, etc. ing. Therefore, an unloading waiting time Tt1 (first waiting time) occurs in which the substrate 4v waits until the downstream transport lane 5F becomes ready for loading. That is, a first standby time (unloading standby time Tt1) occurs, in which the workpiece (board 4) waits for being transferred to the adjacent production facility (component mounting apparatus M4).

In the transport lane 5F on the front side of the component mounting apparatus M3, the board 4v is unloaded and the next board 4w is loaded after the unloading standby time Tt1 after the mounting T of the board 4v is completed. In the transport lane 5R on the rear side of the component mounting device M3, when the mounting B of the board 4b is completed, the board 4a is on the transport lane 5F on the rear side of the component mounting device M4 on the downstream side. The unloading of the substrate 4b and the loading of the next substrate 4c are started. At the time when the loading of the board 4c is completed, the mounting T of the board 4w is being executed, so the mounting B of the board 4c is started after the work standby time Tw4.

In this way, the production time Tpa of the product type aa in the component mounting line L1 includes the first waiting time (unloading waiting time Tt) for waiting for the workpiece (board 4) to be transported to the adjacent production equipment, and the working means While the (mounting heads 10F, 10R) are performing production work (mounting T, mounting B) on the workpiece transported to one of the plurality of lanes L1F, L1R, the plurality of lanes L1F, L1R A second standby time (work standby time Tw) during which the workpieces transported to the other lanes L1F and L1R wait for production work by the work means is included.

In FIG. 3, in the component mounting line L1, when the production of the product type aa is completed, the setup work for the setup work time Tc2 is executed, and the mounted board (lot B) of the product type bb is mounted in the front lane L1F, and the mounted board (lot B) of the product type bb is placed in the rear lane L1R. Production of a mounting board (lot C) of type cc is executed. The production time Tpb required for component mounting work for product type bb and the production time Tpc required for component mounting work for product type cc include the first standby time (unloading standby time Tt) and the second standby time, similar to the production time Tpa for product type aa. Waiting time (work waiting time Tw) is included.

Next, the configuration of the management computer 3 will be explained with reference to FIG. The management computer 3 includes a processing section 20, a production plan storage section 24 serving as a storage device, a line information storage section 25, a calculation information storage section 26, as well as an input section 27 and a display section 28. The processing unit 20 is a data processing device such as a CPU, and includes a production time calculation unit 21, a production index calculation unit 22, and a display processing unit 23 as internal processing units. Note that the management computer 3 does not need to be composed of one computer, and may be composed of a plurality of devices. For example, all or part of the storage device may be provided in the cloud via a server.

The input unit 27 is an input device such as a keyboard, touch panel, or mouse, and is used for inputting operation commands and data. The display unit 28 is a display device such as a liquid crystal panel, and in addition to displaying various data stored in each storage unit, displays various information such as an operation screen for operation by the input unit 27 and a production index display screen.

In FIG. 5, the production plan storage unit 24 stores production plan information 24a, product type information 24b, setup work information 24c, and the like. The production plan information 24a includes, for each lot of printed circuit boards to be produced, information that specifies the type to be produced, the number of pieces to be produced, information that specifies the component mounting lines L1 to L4 that produce the printed circuit boards, production order, etc. The plan is memorized.

The product type information 24b stores information necessary for component mounting work, such as the type of component to be mounted on the board 4 and the mounting position, for each type of mounted board to be produced. For example, the product type information 24b includes the number of components mounted on the board 4 (number of mounting points) and the mode of component mounting work (independent mounting mode, alternate mounting mode) for each product type. The setup work information 24c includes a plan for setup work to change the product type to be produced, which is determined in advance based on the production order, the type of parts to be mounted, etc., and a predicted setup work time Tc (product changeover time). remembered.

In FIG. 5, the line information storage section 25 stores line configuration information 25a, production equipment information 25b, and the like. The line configuration information 25a stores information regarding the configuration of the production lines, such as the type of production equipment that constitutes each of the component mounting lines L1 to L4 and the order in which they are connected. The production equipment information 25b stores information regarding the time required for production, such as the time required for each production operation, for each type of production equipment that constitutes the component mounting lines L1 to L4. For example, the production equipment information 25b includes the loading time and unloading time of the board 4 in each production equipment, the printing time per board in the printing device M2, the mounting time per component in the component mounting devices M3 and M4, etc. , the probability of occurrence of a process in which production work is interrupted, such as a suction error in the component mounting apparatuses M3 and M4, is stored.

The calculation information storage unit 26 stores mounting time information 26a, standby time information 26b, production time information 26c, production index information 26d, and the like. The production time calculation unit 21 includes a mounting time calculation unit 21a and a standby time calculation unit 21b as internal processing units. The mounting time calculation unit 21a calculates the mounting time (production work time) per board (product) for each product type based on the production plan information 24a, product type information 24b, line configuration information 25a, and production equipment information 25b. and is stored in the calculation information storage unit 26 as mounting time information 26a.

The standby time calculation unit 21b calculates the standby time (unloading standby time Tt, work standby time Tw) for each board 4 of each type based on the production plan information 24a, product type information 24b, line configuration information 25a, and production equipment information 25b. It is calculated and stored in the calculation information storage unit 26 as waiting time information 26b. The standby time calculation unit 21b calculates the standby time by simulating events that occur at a predetermined frequency based on the probability of occurrence, such as interruption of work that occurs in a production device and waiting for transportation of the substrate 4 in a previous device.

The production time calculation unit 21 calculates production in a predetermined period based on the production quantity included in the production plan information 24a, the mounting time information 26a, the standby time information 26b, and the loading time and unloading time of the board 4 included in the production equipment information 25b. The production time Tp is calculated for each of the plurality of products for which production is planned and is stored in the calculation information storage unit 26 as production time information 26c.

In FIG. 5, the production index calculation unit 22 calculates products for each of a plurality of products based on the production time Tp included in the production time information 26c and the setup work time Tc (product switching time) included in the setup work information 24c. A predicted production index (first production index) indicating production capacity is calculated and stored in the calculation information storage unit 26 as production index information 26d. The predicted production index is an index that indicates production capacity that takes into account time other than production, such as setup work other than production work that occurs in actual product production, and waiting time, and is an index that indicates the production capacity that takes into account time other than production work such as setup work and standby time that occurs during actual product production. It is expressed as (number of implementation points). Specifically, the predicted production index is calculated by dividing the total number of parts mounted by multiplying the number of parts mounted on the mounted board (product) by the number of pieces produced in the lot by the sum of the production time Tp and the setup work time Tc. Ru.

In addition, the production index calculation unit 22 calculates an ideal production time that does not include setup work time Tc or standby time based on the mounting time (production work time) per board (product) included in the mounting time information 26a. An index (second production index) is calculated and stored in the calculation information storage unit 26 as production index information 26d. That is, the production index calculating unit 22 calculates an ideal production index (second production index) based on the production time Tp not including the waiting time for each of a plurality of products whose production is planned for a predetermined period. Note that a third production index based on the production time Tp including waiting time may be used as the production index.

In FIG. 5, the display processing unit 23 displays the average value of the predicted production index for a predetermined period and the average value of the ideal production index for each component mounting line L1 to L4 (production line) based on the production plan information 24a and the production index information 26d. value, the ratio of the average value of the predicted production index to the average value of the ideal production index, the total value (floor total) of the average value of the predicted production index and the average value of the ideal production index of component mounting lines L1 to L4, etc. , the display unit 28 displays the production index display screen. That is, the display unit 28 displays a first production index (predicted production index), a second production index (ideal production index), an average value of the first production index, an average value of the second production index, and a display of each production line. The average value of the first production index for each production line and the total value of the average value of the first production index for each production line are displayed.

Here, an example of the production index display screen 30 displayed on the display section 28 will be described with reference to FIG. 6. The production index display screen 30 includes a production time display area 31 that displays the production time Tp for each lot of mounting boards produced on the floor F in chronological order for each lane of the component mounting lines L1 to L4 arranged on the floor F. , a line average display area 32 that displays the line average production index for each of the component mounting lines L1 to L4, and a floor total display area 33 that displays the floor total of the production index. The rectangles displayed in the production time display area 31 represent the production time Tp for each lot, and the space between the rectangles represents the setup work time Tc or the time spent waiting for the start of the setup work, such as waiting for parts.

The line average display area 32 includes the average value of the predicted production index (first production index), the average value of the ideal production index (second production index), and the average value of the ideal production index for each component mounting line L1 to L4. The ratio of the average value of the predicted production index to the average value of the predicted production index is displayed. The floor total display area 33 displays the floor total (total of component mounting lines L1 to L4) of the average value of the predicted production index (first production index) and the average value of the ideal production index (second production index), The ratio of the average value of the predicted production index to the average value of the ideal production index for the entire floor is displayed. In this way, the display unit 28 compares and displays the average value of the second production index (ideal production index) with the average value of the first production index (predicted production index).

Next, a production index display method for displaying a production index indicating the production capacity for producing a plurality of types of products (mounted boards) on a production line (component mounting lines L1 to L4) will be explained along the flowchart of FIG. First, in the management computer 3 (production control device), the mounting time calculation unit 21a calculates the mounting time (production work time) per board 4 (product) for each product type, stores it as mounting time information 26a, and waits. The time calculation unit 21b calculates a waiting time (unloading waiting time Tt, work waiting time Tw) for each board 4 and stores it as waiting time information 26b (ST1).

Next, the production time calculation unit 21 calculates the production time Tp for each lot (for each type) based on the mounting time information 26a and the standby time information 26b, and stores it as production time information 26c (ST2: production time calculation step). . Next, based on the production time information 26c, the production index calculation unit 22 calculates an expected production index based on the production time Tp and the setup work time Tc (product switching time) for each of the plurality of products scheduled to be produced in a predetermined period. (first production index), an ideal production index (second production index) based on the production time Tp is calculated and stored as production index information 26d (ST3: production index calculation step).

Next, the display processing unit 23 calculates the sum of the average value of the first production index for each production line and the average value of the first production index for each production line, and calculates the average value of the second production index. A production index display screen 30 that is displayed in comparison with the average value of the first production index is displayed on the display unit 28 (ST4: production index display step). Thereby, a production index (predicted production index) closer to actual production can be displayed on the display section 28 and provided to the administrator.

Note that the first production index for each production line for a specific lot, the second production index, and a comparison value obtained by comparing the second production index with the first production index are displayed on the production index display screen 30. Good too. In addition, in the case of a lot of double-sided mounting boards, the first production index, the second production index, and the comparison value comparing the second production index with the first production index are calculated separately, together with the total of the front side and the back side. may be displayed on the production index display screen 30.

As explained above, the management computer 3 of the present embodiment includes a production time calculation unit 21 that calculates the production time Tp for each of a plurality of products planned to be produced in a predetermined period, and a production A production index calculation unit 22 that calculates a first production index (predicted production index) based on time Tp and product switching time (setup work time Tc), and a display unit 28 that displays the first production index. multiple types of products (mounted boards) are produced on production lines (component mounting lines L1 to L4) in which multiple production facilities are connected to prepare and transport workpieces (boards 4) and perform production work (component mounting work). This is a production management device that displays production indicators that indicate production capacity. Thereby, a production index (predicted production index) closer to actual production can be displayed on the display section 28 and provided to the administrator.

The above description has been based on one embodiment of the present invention. It will be understood by those skilled in the art that this embodiment can be modified in various ways to the types and combinations of products produced on the production line, and that such modifications are also within the scope of the present invention. For example, the production line may be an assembly line that assembles electronic devices as a product, or a food processing line that produces processed food products.

Note that the average value of the predicted production index (first production index), the average value of the ideal production index (second production index), and the average value of the ideal production index are displayed for each component mounting line L1 to L4 in the line average display area 32. The ratio of the average value of the predicted production index to It may be an average value of selected or preset arbitrary lots.

In addition, by placing the cursor on the input device, touching, or clicking the average value of each component mounting line L1 to L4 in the line average display area 32, the color of the rectangle representing the target lot can be changed to other lots. You may change the color of the rectangle that represents. Furthermore, among the mounting lines, the color of the line average display area 32 where the difference between the predicted value and the ideal value is the smallest and the line average display area 32 where the difference between the predicted value and the ideal value is the largest may be changed. By doing so, visibility for the operator is improved.

The production index display method and production control device of the present invention have the effect of being able to provide production indexes that are closer to actual production, and are useful in the field of mounting parts on boards.

3 Management computer (production control device)
4, 4a ~ 4c, 4u ~ 4w board (work)
10F, 10R Mounting head L1 to L4 Component mounting line (production line)
M2 Printing equipment (production equipment)
M3, M4 Component mounting equipment (production equipment)
Tc1, Tc2 Setup work time (product switching time)
Tpa~Tpc Production time Tt1, Tt2 Unloading standby time (first standby time)
Tw1 to Tw4 Work waiting time (second waiting time)

Claims (5)

A production index display method for displaying a production index indicating production capacity for producing multiple types of products on a production line in which multiple production facilities that transport workpieces and carry out production work are connected, the method comprising:
Calculating a first production index based on production time and variety switching time for each of the plurality of varieties whose production is planned in a predetermined period;
displaying the first production index together with the production time for each of the plurality of varieties whose production is planned for the predetermined period;
The production time for each of the plurality of products is displayed in a plurality of rectangular shapes according to the length of the production time,
In the production index display method , the time between the plurality of rectangular shapes is represented by the setup work time of the production time or the waiting time for waiting for the start of the setup work . calculating a second production index based on the production time for each of the plurality of varieties;
The production index display method according to claim 1, wherein the second production index is displayed together with the first production index. A plurality of the production lines exist on the floor,
3. The production index display method according to claim 2 , wherein the average value of the first production index and the average value of the second production index for the entire floor including the plurality of production lines are displayed together. 4. The production index display method according to claim 1, wherein the production time includes a first waiting time for waiting for the workpiece to be transported to the adjacent production facility. A production control device that displays a production index indicating the production capacity to produce multiple types of products on a production line in which multiple production facilities that transport workpieces and carry out production work are connected,
a production time calculation unit that calculates production time for each of the plurality of types whose production is planned for a predetermined period;
a production index calculation unit that calculates a first production index based on the production time and the product switching time for each of the plurality of products;
a display unit that displays the first production index and the production time for each of the plurality of products planned to be produced in the predetermined period;
The display section displays the production times for each of the plurality of products in the form of a plurality of rectangles according to the length of the production time, and the time between the plurality of rectangular shapes corresponds to the length of the production time. A production control device that is expressed in setup work time or standby time waiting for setup work to start .

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