JP2023059408A - Production facility controller and control method - Google Patents

Abstract

To rationally control maintenance of a production facility including plural drive units.SOLUTION: The present invention includes: a first operation control unit that controls the operations of plural drive units according to preplanned first production plan information; a production plan change unit that changes the first production plan information into second production plan information; and a second operation control unit that controls the operations of the plural drive units according to the second production plan information. The second product plan information is control information for use in optimizing maintenance of the production facility by increasing or decreasing at least part of plural loads imposed on the respective plural drive units when the first operation control unit controls the plural drive units.SELECTED DRAWING: Figure 5

Description

The present invention relates to control technology for controlling production equipment provided with a plurality of drive units.

2. Description of the Related Art As an example of production equipment, a component mounter that mounts components on a substrate, for example, is widely used. In addition to component mounters, board production systems combining solder printing machines for printing solder on board mounting locations are also widely used as other examples of the above-mentioned production equipment. These production facilities are provided with a plurality of drive units. A control device is installed in the production facility in order to control the plurality of drive units. For example, in the system described in Patent Literature 1, an equipment diagnosis system is provided as an example of a control device. This equipment diagnosis system diagnoses malfunctions of each part based on the operation information of the equipment and devices used to manufacture circuit boards in the production equipment, and performs maintenance on the equipment and devices that are diagnosed to be malfunctioning. In addition, it manages the maintenance of production equipment.

JP 2020-27329 A

In the above-described prior art, malfunctions of devices, devices, etc., installed in production facilities are diagnosed based on operation information, and the devices, devices, etc. diagnosed as malfunctioning are individually maintained. For this reason, it has been difficult to perform maintenance of the production equipment at a reasonable timing for the production equipment as a whole. For example, as will be described in detail later, the load applied to the driving unit incorporated in the device or device diagnosed as malfunctioning and the load applied to the driving unit incorporated in other devices or devices are adjusted. As a result, it becomes possible to reduce the maintenance frequency of the production equipment as a whole and formulate a maintenance plan for the production equipment as a whole. However, in the conventional technology, since only individual maintenance work is taken into consideration, it is impossible to reduce maintenance frequency and formulate a maintenance plan. As a result, maintenance work could not be rationalized for the entire production facility.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a production facility control apparatus and control method capable of rationally controlling the maintenance of a production facility provided with a plurality of drive units. do.

A first aspect of the present invention is a control device for a production facility provided with a plurality of driving units, wherein first operation control controls the operations of the plurality of driving units according to first production plan information planned in advance. a production plan switching unit for switching from the first production plan information to the second production plan information; and a second operation control unit for controlling the operations of the plurality of drive units according to the second production plan information, The production plan information is for optimizing the maintenance of the production equipment by increasing or decreasing at least some of the plurality of loads respectively applied to the plurality of driving units when the first motion control unit controls the plurality of driving units. is characterized by being the control information of

A second aspect of the present invention is a control method for a production facility provided with a plurality of drive units, comprising a step of controlling the plurality of drive units according to first production plan information planned in advance; a step of switching from first production planning information to second production planning information; To control the operation of a plurality of drive units so as to optimize the maintenance of production equipment by increasing or decreasing at least a portion of the plurality of loads applied to each of the plurality of drive units when controlling the drive units of It is characterized by being the information of

In the production equipment, a plurality of driving units are controlled according to first production plan information planned in advance. Here, if a plurality of drive units are uniformly controlled by the first production plan information, it may become difficult to perform maintenance of the production equipment at reasonable timing for the production equipment as a whole. Therefore, in the present invention, the second production plan information is provided in addition to the first production plan information, and switching from the first production plan information to the second production plan information is possible. This second production plan information increases or decreases at least some of the loads applied to the plurality of drive units when controlling the plurality of drive units according to the first production plan information, thereby maintaining the production equipment. Since the control information is for optimization, maintenance of the production equipment is executed at reasonable timing.

Production facilities to which the present invention is applied include, for example, those having at least two mounting heads for mounting components on substrates and having a plurality of head driving units for driving the plurality of mounting heads, respectively, which will be described later. Includes component mounters. In this production facility, the first motion control unit controls the plurality of head drive units so that the components are mounted according to the first production planning information before the production planning switching unit switches to the second production planning information. to control. If only the plurality of head driving units are controlled by the first operation control unit, the load may be unevenly applied to some of the head driving units, making rational maintenance difficult. However, after the second operation control section is switched to the second production plan information by the production plan switching section, it controls the plurality of head drive sections so that component mounting is executed according to the second production plan information. Therefore, the unevenness of the load is alleviated, and maintenance of the production equipment is performed at a reasonable timing.

The plurality of mounting heads includes a first mounting head and a second mounting head, and the plurality of head driving sections includes a first head driving section that drives the first mounting head and a second head driving section that drives the second mounting head. In the production equipment, the first production plan information is a first production program for driving the first head driving section and the second head driving section with a first load and a second load lower than the first load, respectively; The second production plan information is a second production program for driving the first head drive section and the second head drive section with a third load and a fourth load higher than the third load, respectively, and the production plan switching section Preferably, the first production program and the second production program are alternately switched. This is because such switching equalizes the load applied to the first head driving section and the second head driving section, and makes it possible to standardize and plan the maintenance timing of the mounting heads.

In order to perform this leveling more reliably, for example, first head load information obtained by integrating the load required to move the first mounting head, and second head load information obtained by integrating the load required to move the second mounting head. and the production plan switching unit obtains the first production plan information when a first load difference obtained by subtracting the second head load information from the first head load information becomes equal to or greater than a first predetermined value. to the second production planning information, and when the second load difference obtained by subtracting the first head load information from the second head load information becomes equal to or greater than a second predetermined value, the second production planning information is switched to the first production planning information. It is preferable to configure

Further, the load change may be executed after specifying the change target head to be the target of the load change from a plurality of mounting heads. More specifically, the control device further includes a head identifying unit that identifies a change target head to be subjected to load change from among a plurality of mounting heads, and the first production plan information includes a third head that drives the change target head. A third production program for driving a driving unit with a fifth load and driving a fourth head driving unit that drives a mounting head different from the head to be changed with a sixth load, wherein the second production plan information is the third production program. A fourth production program for driving the load of the head driving section with a seventh load higher than the fifth load and driving the fourth head driving section with an eighth load lower than the sixth load, wherein the production plan switching section The maintenance timing of a plurality of mounting heads may be adjusted by switching from the third production program to the fourth production program according to the identification of the head to be changed by the head identification unit. By having such a configuration, it is possible to flexibly cope with the situation of production facilities.

In order to cause the head specifying unit to specify the head to be changed, an input unit may be further provided that accepts selection of the head to be changed by the user and provides head information about the head to be changed to the head specifying unit. The additional equipment of the input unit allows the user to arbitrarily specify the head to be changed, and to appropriately respond according to the situation of the production facility.

Further, the production equipment to which the present invention is applied includes equipment composed of a plurality of working devices, such as a substrate production system which will be described later. In order to control this production facility, there is provided a device identification unit that identifies a load change target device from among a plurality of work devices, and each of the plurality of work devices has at least one drive unit. , the first production planning information is control information for operating the driving unit included in the working device in the normal mode, and the second production planning information is controlling the driving unit included in the working device under a higher load than in the normal mode. It is control information for operating in the load increase mode or the low load load reduction mode, and the production plan switching unit causes the first production plan information to maintain information for controlling the operation of the work devices other than the change target device. By switching the information for controlling the operation of the device to be changed from the first production planning information to the second production planning information according to the selection of the device to be changed by the device specifying unit, the maintenance timing of the device to be changed can be adjusted. It may be configured to be selectively adjusted. As a result, maintenance of the device to be changed identified by the device identification unit can be performed at a reasonable timing.

Here, when it is desired to carry out maintenance of the device to be changed ahead of schedule, the second production plan information is control information for operating the work device in the load increase mode, and the production plan switching unit controls the operation of the device to be changed. By switching the information for controlling from the first production plan information to the second production plan information, the maintenance timing of the device to be changed may be advanced.

On the other hand, when it is desired to postpone the maintenance of the device to be changed, the second production plan information is control information for operating the work device in the load reduction mode, and the production plan switching unit changes the operation of the device to be changed. By switching the information for controlling from the first production plan information to the second production plan information, the maintenance timing of the device to be changed may be delayed.

In order to allow the device specifying unit to specify the device to be changed, an input unit may be further provided that accepts selection of the device to be changed by the user and provides device information regarding the device to be changed to the device specifying unit. The additional equipment of the input unit allows the user to arbitrarily specify the device to be changed, and it is possible to respond appropriately according to the situation of the production facility.

Furthermore, a plurality of working devices that constitute production equipment may have different takt times. A control device for controlling such a production facility is provided with a device specifying unit that specifies the slowest device having the slowest tact time among a plurality of work devices constituting the production facility. The production facility connects a plurality of work devices in a row and sequentially conveys the work to be worked between the work devices. The plan information is control information for operating the drive unit included in the work device in the normal mode, and the second production plan information operates the drive unit included in the work device in the load reduction mode with a lower load than the normal mode. This is control information for controlling the operation of work devices other than the slowest device while maintaining the information for the production planning switching unit to control the operation of the slowest device in the first production planning information. is switched from the first production planning information to the second production planning information. By using this control device, it is possible to suppress variations in takt time among a plurality of work devices and to delay the maintenance timing of work devices other than the slowest device.

As described above, according to the present invention, it is possible to rationally control the maintenance of production equipment provided with a plurality of drive units.

1 is a diagram schematically showing the configuration of a component mounter equipped with a control device according to a first embodiment of the present invention; FIG. FIG. 4 is a partial front view schematically showing the vicinity of the lower end portion of an example of the head unit; FIG. 3 is a partial plan view schematically showing the bottom of the head unit of FIG. 2; 2 is a flow chart showing a control method of the component mounter by the control device shown in FIG. 1; FIG. 5 is a diagram schematically showing a load state when the mounter repeats mounting turns by the control method shown in FIG. 4; FIG. 7 is a diagram schematically showing the configuration of a component mounter equipped with a control device according to a second embodiment of the present invention; FIG. 10 is a diagram showing the number of components to be mounted for each mounting head in each production program; It is a figure which shows typically the effect by switching of the production program in 2nd Embodiment. FIG. 10 is a diagram schematically showing the configuration of a board production system, which is an example of production equipment equipped with a control device according to a third embodiment of the present invention; 9 is a diagram schematically showing an example of maintenance timing control in the board production system shown in FIG. 8; FIG. FIG. 10 is a diagram schematically showing operations performed in a fourth embodiment of a control device according to the present invention;

<First embodiment>
FIG. 1 is a diagram schematically showing the configuration of a component mounter equipped with a first embodiment of a control device according to the present invention. FIG. 1 and FIG. 6, which will be described later, appropriately show XYZ orthogonal coordinate axes in which the Z direction is the vertical direction and the X and Y directions are the horizontal directions.

The mounter 1 is an example of the "production equipment" of the present invention. Then, the control device 100 controls a plurality of driving units provided in the mounter 1 according to a production program stored in advance. As a result, the component P is mounted on the board B according to the procedure defined by the production program. The parts P include electronic parts such as ICs (Integrated Circuits), transistors, capacitors, and resistors. In addition, as will be described later, the control device 100 optimizes the maintenance of the mounter 1 by increasing or decreasing at least some of the loads applied to the respective driving units. Hereinafter, after explaining the configuration of the mounter 1 and the control device 100, the proper maintenance by the control device 100 will be described in detail.

As shown in FIG. 1, the mounter 1 has a pair of conveyors 2 arranged in parallel in the Y direction. Then, the component mounter 1 mounts a component on the board B which is transported from the upstream side (the left side in FIG. 1) in the Y direction (board transport direction) by the conveyor 2 to the mounting work position Lo (the position of the board B in FIG. 1). P is mounted, and the board B (component-mounted board B) on which the component P has been mounted is conveyed from the mounting work position Lo to the downstream side in the Y direction by the conveyor 2 . The transportation of the substrate B by the conveyor 2 is controlled by the controller 100 .

In addition, the component mounter 1 includes a pair of X-axis rails 31 parallel to the X-direction, an X-axis ball screw 32 parallel to the X-direction, and an X-axis motor Mx (servo motor) that rotationally drives the X-axis ball screw 32. A Y-axis rail 34 parallel to the Y-direction is fixed to a nut of an X-axis ball screw 32 while being supported by a pair of X-axis rails 31 so as to be movable in the X-direction. A Y-axis ball screw 35 parallel to the Y-direction and a Y-axis motor My (servo motor) for rotating the Y-axis ball screw 35 are attached to the Y-axis rail 34 . It is fixed to the nut of the Y-axis ball screw 35 while being supported so as to be movable in the Y direction. Therefore, the control device 100 rotates the X-axis ball screw 32 by the X-axis motor Mx to move the head unit 4 in the X direction, and rotates the Y-axis ball screw 35 by the Y-axis motor My to move the head unit 4 in the Y direction. can be moved.

A board recognition camera C is attached to the head unit 4 . The board recognition camera C faces downward, and images the fiducial mark of the board B positioned at the mounting work position Lo. The image captured by the board recognition camera C is transferred to the control device 100, and the control device 100 can determine the position of the board B from the fiducial marks included in the image.

2 is a partial front view schematically showing the vicinity of the lower end portion of an example of the head unit, and FIG. 3 is a partial plan view schematically showing the bottom portion of the head unit of FIG. As shown in FIGS. 2 and 3, the head unit 4 has a rotary head in which a plurality of nozzles N are arranged circumferentially.

The head unit 4 has a main shaft 41 extending in the Z direction and a nozzle holder 42 supported by the lower end of the main shaft 41 . The nozzle holder 42 is rotatably supported in a rotation direction R around a rotation axis AX (virtual axis) parallel to the Z direction. receive and rotate. Further, the nozzle holder 42 supports a plurality of (eight) elevation shafts 43 that are circumferentially arranged around the rotation axis AX at equal angles θ.

Each elevating shaft 43 is supported so as to be able to move up and down, and is urged upward by an unillustrated urging member. A nozzle N is detachably attached to the lower end of each lifting shaft 43 . Thereby, the nozzle holder 42 supports a plurality of nozzles N that are circumferentially arranged at equal angles θ around the rotation axis AX. Therefore, when the drive control unit 130 of the control device 100 outputs a rotation command to the R-axis motor Mr, the nozzle holder 42 rotates by receiving the driving force from the R-axis motor Mr, and the plurality of nozzles N are integrally rotated. It rotates along a circular orbit O centered on the rotation axis AX.

The main shaft 41 also supports a nozzle lifting mechanism 44 above the plurality of lifting shafts 43 . The nozzle elevating mechanism 44 has two pressing members 441 arranged at an angle of 180 degrees around the rotation axis AX. Each pressing member 441 receives the driving force of the Z-axis motor Mz built in the nozzle lifting mechanism 44 and moves up and down independently of each other. Therefore, when the drive control unit 130 outputs a lowering command to the Z-axis motor Mz, the pressing member 441 is lowered by receiving the driving force from the Z-axis motor Mz. As a result, the pressing member 441 lowers one of the plurality of elevating shafts 43 positioned immediately below the elevating shaft 43 against the urging force acting on the elevating shaft 43 to a lowered position where the component P is picked up or mounted. Lower the nozzle N to Zd. On the other hand, when the drive control unit 130 outputs a lift command to the Z-axis motor Mz, the pressing member 441 is lifted by receiving the driving force from the Z-axis motor Mz. As a result, the one elevating shaft 43 pushed down by the pressing member 441 rises along with the nozzle N according to the urging force, and the nozzle N rises to the raised position Zu. In FIG. 2, the lowered position Zd and the raised position Zu are shown with respect to the lower end of the nozzle N, respectively.

In such a head unit 4, the position directly below the pressing member 441 is the operating position Po where the component P is picked up and mounted by the nozzle N. As shown in FIG. That is, in the head unit 4, two operating positions Po, Po are provided with an angle of 180 degrees around the rotation axis AX, corresponding to the arrangement of the two pressing members 441 described above. On the other hand, as shown in FIG. 3, in the nozzle holder 42, two nozzles N (two nozzles located on the opposite Four pairs of nozzles N) are provided, and 2×4 (=8) nozzles N are arranged along the circumferential orbit O. The two nozzles N that form a pair in this manner satisfy a positional relationship in which one nozzle N can be positioned at one operating position Po and the other nozzle N can be positioned at the other operating position Po. Therefore, the drive control unit 130 adjusts the rotation angles of the plurality of nozzles N by the R-axis motor Mr, so that each of the two nozzles N, N forming an arbitrary one nozzle pair out of the four nozzle pairs is rotated. can be positioned at the operating positions Po, Po and used for picking up and mounting the component P.

For example, when picking up a component P at the operating position Po, the head unit 4 is moved above the component supply location 52 (FIG. 1) to position the operating position Po directly above the component supply location 52 . In this state, the nozzle N that does not pick up the component P is stopped at the operating position Po in the rotational direction R, and is lowered from the raised position Zu to the lowered position Zd in the Z direction. Negative pressure is applied to the nozzle N at the timing when the nozzle N comes into contact with the component P supplied to the component supply location 52 , and the component is picked up by the nozzle N from the component supply location 52 . Subsequently, the component P is taken out from the component supply location 52 by raising the nozzle N that has picked up the component P from the lowered position Zd to the raised position Zu in the Z direction.

Alternatively, when a component is to be mounted at the operating position Po, the head unit 4 is moved above the board B supported at the mounting work position Lo, and the operating position Po is positioned directly above the part of the board B to be mounted. In this state, the nozzle N for picking up the component P is stopped at the operating position Po in the rotational direction R, and lowered from the raised position Zu to the lowered position Zd in the Z direction. At the timing when the component P comes into contact with the substrate B, the atmospheric pressure or positive pressure is applied to the nozzle N, and the component P is mounted on the substrate B from the nozzle N. Subsequently, the nozzle N, from which the part P has left, is raised from the lowered position Zd to the raised position Zu in the Z direction. Thus, in this embodiment, the nozzle N attached to the lower end of the elevating shaft 43 picks up the component P, moves it to a position above the board, and mounts it on the board B. As shown in FIG. Therefore, in this specification, the structure in which the nozzle N is attached to the lower end of the elevating shaft 43 is referred to as a "mounting head H". A series of operations of taking out one component P by the mounting head H, moving it to a position above the board, and placing it on the board B is called a "mounting turn". That is, in this embodiment, the head unit 4 has eight mounting heads H, and the substrate B is manufactured by repeating mounting turns by each mounting head H a plurality of times.

Returning to FIG. 1, the description of the configuration of the mounter 1 is continued. Two component supply units 5 are arranged in the X direction on each side of the pair of conveyors 2 in the Y direction. A plurality of tape feeders 51 are detachably attached to each component supply unit 5 so as to be aligned in the Y direction. The tape feeder 51 extends in the X direction, and has a component supply point 52 at the leading end on the conveyor 2 side in the X direction. Each tape feeder 51 is provided with a component supply reel around which a tape containing small pieces of components P such as integrated circuits, transistors, capacitors, etc. are wound at predetermined intervals. A tape pulled out from a reel is loaded. Then, the tape feeder 51 intermittently feeds the tape in the X direction toward the conveyor 2 side in accordance with a command from the control unit 410 . As a result, the components P in the tape are sent out in the X direction (feed direction) and sequentially supplied to the component supply locations 52 of the tape feeder 51 .

The head unit 4 operates the driving units (the conveyor 2, the X-axis motor Mx, the Y-axis motor My, the R-axis motor Mr, the Z-axis motor Mz, etc.) in response to a drive command from the control device 100, thereby driving the substrate. A part P is mounted on B. The head unit 4 moves above the tape feeder 51 and brings the nozzle 432 into contact with the component P supplied to the component supply location 52 by the tape feeder 51 . The head unit 4 sucks (picks up) the component P by the negative pressure applied to the nozzle 432 . The head unit 4 transfers the component P thus held by the nozzle 432 to the mounting location (land) of the substrate B at the mounting work position Lo.

The control device 100 that controls the component mounter 1 configured as described above includes an arithmetic processing unit 110, a storage unit 120, a drive control unit 130 that controls the drive unit of the component mounter 1, and a nozzle N (FIGS. 2 and 4). 3) is provided with an imaging control unit 140 for controlling the imaging. The storage unit 120 is a storage device such as a HDD (Hard Disk Drive) or an SSD (Solid State Drive). A second production program 122 is stored. These production programs 121 and 122 are created by the production program creation device 200 .

The production program creation device 200 has an arithmetic processing unit 210 including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). Control information in which the mounting procedure is optimized is created as the first production program 121 . Also, as will be described in detail later, control information defining a component mounting procedure for optimizing the maintenance of the component mounter 1 by increasing or decreasing at least part of the load applied to each of the plurality of drive units. is created as the second production program 122 .

Based on these production programs 121 and 122, the arithmetic processing section 110 controls each section of the mounter 1. FIG. Arithmetic processing unit 110 includes a CPU (Central Processing Unit), ROM (Read Only Memory), and RAM (Random Access Memory), and selects first production program 121 or second production program 122 from storage unit 120. read out and implement component mounting. That is, the arithmetic processing unit 110 controls the operations of the plurality of driving units according to the first production program 121, thereby mounting the component P on the board B in the shortest time. It functions as an operation control section. Further, the arithmetic processing unit 110 controls the operations of the plurality of drive units described above according to the second production program 122 to optimize the maintenance timing and also functions as the "second operation control unit" of the present invention. Further, the arithmetic processing unit 110 acquires the integrated value of the load applied to each driving unit while the component mounter 1 is operating, and functions also as the "load acquiring unit" of the present invention. Furthermore, as will be described in detail below, the arithmetic processing unit 110 performs a component mounting operation based on the first production program 121, a component mounting operation based on the second production program 122, and a component mounting operation based on the load applied to each driving unit. , that is, it also functions as a "production plan switching unit" of the present invention.

FIG. 4 is a flow chart showing a control method of the mounter by the control device shown in FIG. Also, FIG. 5 is a diagram schematically showing the load state when the mounter repeats mounting turns by the control method shown in FIG. The control device 100 reads out a control program stored in advance in the storage unit 120, and controls each part of the device as follows according to the control program, whereby the component P is repeatedly mounted on the board B. .

Here, in order to clarify the features of the present invention, attention is focused on two mounting heads H1 and H2 out of the eight mounting heads H, and the load applied to the drive unit for driving each of the mounting heads H1 and H2 is described. Consider. That is, for example, as shown in FIG. 5, a driving unit for driving the first mounting head H1 and a driving unit for driving the second mounting head H2 are established between the first production program 121 and the second production program 122. The control method will be described on the premise that the loads applied to the parts are different. More specifically, in order to mount 100 components P on the board B, in the first production program 121, the first mounting head H1 performs a mounting turn (= component picking + movement to a position above the board + movement to the board). Placement) is repeated 70 times to mount 70 components P, and the second mounting head H2 mounts 30 components P by repeating the mounting turn 30 times. That is, while the mounting turns are repeated according to the first production program 121, the load applied to the drive section of the first mounting head H1 is greater than the load applied to the drive section of the second mounting head H2. Therefore, if the mounting turn is continued with the first production program 121 as it is, the load will be unevenly applied to the drive section of the first mounting head H1. Therefore, before the second mounting head H2, the integrated value of the load applied to the drive section of the first mounting head H1 reaches the maintenance reference value, that is, the limit value at which maintenance of the mounting head H is judged to be necessary.

Therefore, in this embodiment, the first mounting head H1 repeats 30 mounting turns to mount 30 components P, and the second mounting head H2 repeats 70 mounting turns to mount 70 components P. A second production program 122 for production is prepared in advance, and the second production program 122 is executed instead of the first production program 121 . In other words, by decreasing and increasing the load applied to the drive section (corresponding to the "head drive section" of the present invention) for driving the first mounting head H1 and the second mounting head H2, the load on the entire head unit 4 can be reduced. We are trying to standardize and plan the maintenance timing of the mounting head by leveling. As described above, in the present embodiment, the driving section for driving the first mounting head H1 when 70 or 30 parts P are mounted by the first mounting head H1 is the "first head driving section" of the present invention. This corresponds to an example, and the loads applied to the drive unit when 70 and 30 parts P are mounted correspond to examples of the "first load" and the "third load" of the present invention, respectively. Further, the driving section for driving the second mounting head H2 when mounting 30 or 70 parts P by the second mounting head H2 corresponds to an example of the "second head driving section" of the present invention. and the loads applied to the drive unit when mounting 30 parts P correspond to examples of the "second load" and the "fourth load" of the present invention, respectively.

As shown in FIG. 4, in step S1, the arithmetic processing unit 110 calculates the integrated value (first head load information L1) of the load applied to the driving unit of the first mounting head H1 and the load applied to the driving unit of the second mounting head H2. The integrated value of the load (second head load information L2) is cleared (timing T0 in FIG. 5). At this timing T0, as shown in FIG. 5, the difference between the first head load information L1 and the second head load information L2 is zero. Note that this step S1 can be executed when maintenance of the first mounting head H1 and the second mounting head H2 is completed. Of course, it is also executed immediately after the component mounter 1 is manufactured.

In the next step S2, the arithmetic processing unit 110 repeats mounting turns using the first mounting head H1 and the second mounting head H2 based on the first production program 121, so that the component P is mounted on the board B. executed. In this case, since the load applied to the drive section of the first mounting head H1 is greater than the load applied to the drive section of the second mounting head H2, the mounting turns are repeated as shown in the period (T0 to T1) in FIG. Accordingly, the first load difference D1 (=first head load information L1-second head load information L2) increases proportionally.

Therefore, in this embodiment, the arithmetic processing unit 110 acquires the first head load information L1 and the second head load information L2 during component mounting based on the first production program 121 (step S3), A load difference D1 is calculated (step S4). While the first load difference D1 does not reach the first predetermined value corresponding to the first production program 121 ("NO" in step S5), the arithmetic processing unit 110 returns to step S2, )repeat.

On the other hand, when it is determined that the first load difference D1 has become equal to or greater than the first predetermined value as shown at timing T1 in FIG. program is switched from the first production program 121 to the second production program 122 (step S6). Then, the arithmetic processing unit 110 repeats mounting turns using the first mounting head H1 and the second mounting head H2 based on the second production program 122, thereby mounting the component P on the board B ( step S7). In this case, the load applied to the drive section of the first mounting head H1 and the load applied to the drive section of the second mounting head H2 are reversed. The first load difference D1 (=first head load information L1−second head load information L2) decreases with repetition, and becomes zero at timing T2. After the timing T2, the second load difference D2 (=the second head load information L2-the first head load information L1) increases proportionally as the mounting turns are repeated.

Therefore, in the present embodiment, the arithmetic processing unit 110 acquires the first head load information L1 and the second head load information L2 during component mounting based on the second production program 122 (step S8), and from them the second head load information L2. A load difference D2 is calculated (step S9). While the second load difference D2 does not reach the second predetermined value corresponding to the second production program 122 ("NO" in step S10), the arithmetic processing unit 110 returns to step S7, )repeat.

On the other hand, when it is determined that the second load difference D2 has become equal to or greater than the second predetermined value as shown at timing T3 in FIG. program is switched from the second production program 122 to the first production program 121 (step S11). Then, returning to step S2, component mounting based on the first production program 121 (steps S2 to S5) and component mounting based on the second production program 122 (steps S6 to S10) are alternately repeated.

As described above, according to the first embodiment, the integrated value of the load applied to the drive section of the first mounting head H1 (first head load information L1) and the integrated load applied to the drive section of the second mounting head H2 The difference from the value (second head load information L2) can always be kept between the first load difference D1 and the second load difference D2. In other words, load leveling can be achieved. Therefore, the maintenance timings of the first mounting head H1 and the second mounting head H2 can be made close to each other, the first mounting head H1 and the second mounting head H2 can be maintained at the same time, and the frequency of maintenance can be reduced. Work can be streamlined.

Moreover, it is possible to prevent the load from concentrating on the drive section of the first mounting head H1, and to extend the life of the component mounter 1. FIG.

In the first embodiment, switching from the second production program 122 to the first production program 121 is executed based on the second load difference D2. becomes zero, the switching may be performed. Thereby, leveling can be further advanced.

Moreover, in the first embodiment, as is clear from the table in FIG. Although the load applied to the driving part of H2 is reversed, it is not limited to this. For example, in the second production program 122, the amount of decrease in the load applied to the drive section of the first mounting head H1 and the amount of increase in the load applied to the drive section of the second mounting head H2 may not match. Also, in the second production program 122, only the load applied to the drive section of the first mounting head H1 may be reduced, or only the load applied to the drive section of the second mounting head H2 may be increased.

In the first embodiment, the second production program 122 is additionally stored in order to increase or decrease the load applied to the drive units of the two mounting heads H1 and H2, and the load is leveled by switching between the production programs 121 and 122. However, in the case of leveling the loads of three or more mounting heads H, a production program is added to increase or decrease the load applied to the drive section of the mounting heads H, and the production program is changed. It can be handled by switching.

Further, in the first embodiment, the present invention is applied to the mounter 1 having a rotary head in which a plurality of nozzles N are arranged in a circle. Even in the mounter 1 having the so-called in-line type head units 4 arranged in parallel, the load can be leveled by increasing or decreasing the load applied to the driving section.

<Second embodiment>
In the first embodiment, the maintenance of the mounter (production equipment) 1 provided with a plurality of driving units is rationally controlled by leveling the load by switching between two types of production programs. For example, when some of the plurality of mounting heads H are already subject to the maintenance plan, driving to drive the mounting heads H other than the mounting heads H subject to the maintenance plan (hereinafter referred to as "heads to be changed"). It is rational to increase the load on the part and maintain the head to be changed according to the maintenance plan. In order to meet such demands, two kinds of production programs corresponding to the head to be changed may be prepared in advance, and the above demands may be satisfied by switching the production programs (second embodiment). The configuration and operation of the second embodiment of the control device according to the present invention will be described below with reference to FIGS. 6, 7A and 7B.

FIG. 6 is a diagram schematically showing the configuration of a component mounter equipped with a control device according to a second embodiment of the present invention. The component mounter 1 shown in FIG. 6 differs from the component mounter 1 shown in FIG. 1 in the structure of the head unit 4, in which five mounting heads H are arranged in a row. Since other configurations are basically the same, the same reference numerals are given to the same configurations, and the description of the configurations is omitted.

A control device 100 that controls the mounter 1 has an arithmetic processing section 110, a storage section 120, a drive control section 130, and an imaging control section 140, as in the first embodiment. Further, the control device 100 further has an input section 150 configured by a liquid crystal panel or the like. The input unit 150 accepts designation of a head to be changed by the user and provides head information on the head to be changed to the arithmetic processing unit 110 . The arithmetic processing unit 110 identifies the change target head designated by the user based on the head information. Thus, in the second embodiment, the arithmetic processing unit 110 has a head identification unit that identifies the change target head instead of the load acquisition unit. For example, when the user inputs through the input unit 150 that the mounting head H1 positioned most upstream in the Y direction (the left end in FIG. 6) among the five mounting heads H is the head to be changed, the input contents Based on this, the head identification unit of the arithmetic processing unit 110 identifies the mounting head H1 as the head to be changed.

When the head to be changed is not specified, the arithmetic processing unit 110 selects a component mounting procedure for performing component mounting in the shortest time from the production program for the component mounter 1 created in advance by the production program creation device 200. Each part of the mounter 1 is controlled based on the optimized control information, ie, the third production program 123 . On the other hand, when the head to be changed is specified, the arithmetic processing section 110 switches from the third production program 123 to the fourth production program 124, and controls each section of the mounter 1 based on the fourth production program 124. .

This fourth production program 124 carries out a component mounting procedure for mounting components while increasing the load applied to the drive section of the head to be changed and reducing the load applied to all or part of the drive sections of the other mounting heads. This is defined control information, and is stored in advance in the storage unit 120 in this embodiment. That is, for each mounting head H, the production program creation apparatus 200 increases the load applied to the drive section of the head to be changed when the mounting head H is specified as the head to be changed, A production program that reduces the load on some drive units is stored as a candidate for the fourth production program. When the user designates a head to be changed, the production program corresponding to the designated head to be changed is transmitted from the production program creating device 200 to the control device 100 and stored in the storage unit 120 as the fourth production program 124. . In the second embodiment, the head to be changed is designated by the user, and the fourth production program 124 corresponding to the designation is received. may be stored in the storage unit 120 in advance. Alternatively, the production program creation device 200 may create the fourth production program 124 in response to designation of the head to be changed by the user, and may be provided to the control device 100 .

Here, before explaining the operation of the mounter 1, load conditions applied to the drive units of the mounting heads H when the mounter 1 operates based on the production programs 123 and 124 will be described with reference to FIG. 7A. explain. In this specification and the drawings, in order to clearly distinguish the five mounting heads H, the already described mounting head H1 is referred to as a "first mounting head H1", and (+Y) from the first mounting head H1. The four mounting heads H arranged in order on the direction side are respectively referred to as "second mounting head H2", "third mounting head H3", "fourth mounting head H4", and "fifth mounting head H5". .

In order to mount 100 parts P on the board B, in the third production program 123, for example, the first mounting head H1 to the fifth mounting head H5 each repeat mounting turns 20 times to mount 20 parts P. . On the other hand, in the fourth production program 124 corresponding to the first mounting head H1 being the head to be changed, for example, the number of mounting turns of the first mounting head (head to be changed) H1 is increased to 15 to reduce the number of components. While the number of turns is increased from 20 to 35, the number of mounting turns of the second mounting head H2 to the fourth mounting head H4 is decreased by 5 to reduce the number of parts from 20 to 15 respectively. In this embodiment, considering that the fifth mounting head H5 is subject to the maintenance plan, the maintenance plan is maintained by not changing the number of parts for the fifth mounting head H5. Thus, in the present embodiment, the driving section that drives the first mounting head H1 corresponds to an example of the "third head driving section" of the present invention, and 20 components P are mounted by the first mounting head H1. The load applied to the third head driving section during mounting corresponds to an example of the "fifth load" of the present invention, and the load applied to the third head driving section when mounting 35 components P by the first mounting head H1 is This corresponds to an example of the "seventh load" of the present invention. Further, each of the driving units for driving the second mounting head H2 to the fourth mounting head H4 corresponds to an example of the "fourth head driving unit" of the present invention, and 20 parts P are mounted by each of the mounting heads H2 to H4. The load applied to each fourth head driving section when mounting corresponds to an example of the "sixth load" of the present invention. corresponds to an example of the "eighth load" of the present invention.

Next, the operation of the mounter 1 will be described with reference to FIG. 7B. FIG. 7B is a diagram schematically showing a change in the number of remaining drives until failure occurrence prediction of the drive unit that drives each mounting head in the second embodiment. In the figure, the horizontal axis indicates the number of times the drive unit drives each mounting head. The hatched portion in the figure corresponds to the number of remaining drives until failure is predicted, and the time when the number of remaining drives reaches the replacement recommended value (one-dot chain line) corresponds to maintenance timing. In FIG. 3, the vertical axis represents the operating time of the component mounter 1, and the left side of the figure represents changes in the number of remaining drives when component mounting is continued under the third production program 123. The right side area of the drawing shows the change in the remaining drive count when switching from the third production program 123 to the fourth production program 124 is executed at the timing Tb at which the head to be changed is specified by the user.

As shown in the left area of the figure, if the component mounting is continuously carried out under the third production program 123, the remaining number of driving times will be Depending on the load applied
・Mounting head H1: Decrease amount Δa0 in the number of remaining drives
・Mounting heads H2 to H4: Decrease amount Δb0 in the number of remaining drives
・Mounting head H5: Decrease amount Δc0 in the number of remaining drives
becomes. As shown in the left area of the figure, at the maintenance timing Tc, the number of remaining driving times for the mounting heads H1 to H4 is relatively large, and maintenance work for the other mounting heads H1 to H4 is not performed together with the mounting head H5. is not reasonable.

On the other hand, if the switching from the third production program 123 to the fourth production program 124 is executed at the timing Tb (>Ta) before the maintenance timing Tc, the load on the driving unit for driving the mounting head H1 increases. , the decrease amount Δa1 of the number of remaining driving times becomes larger than the decrease amount Δa0. As a result, the number of remaining drives at the maintenance timing Tc becomes smaller than when the production program is not switched (the left area in the figure), and the rationality of performing the maintenance work on the mounting head H1 together with the mounting head H5 increases. . In addition, since the load applied to the drive unit that drives the mounting heads H2 to H4 is reduced, the decrease amount Δb1 of the remaining number of drives becomes smaller than the decrease amount Δb0. As a result, the maintenance timing of the mounting heads H2 to H4 can be delayed, and the maintenance frequency of the component mounter 1 can be suppressed.

As described above, according to the second embodiment, the maintenance timings of the mounting heads H1 to H5 can be individually adjusted, and the maintenance work of the component mounter 1 as a whole can be rationalized.

In the second embodiment, some of the mounting heads H2 to H5 other than the mounting head H1 specified as the head to be changed, that is, the load applied to the driving unit that drives the mounting head H5, is not changed. may also be controlled to change the load. Also, some of the mounting heads H2 to H4 may be controlled so as not to change the load applied to the drive section. In short, the third head driving section that drives the head to be changed according to the specification of the head to be changed is driven by the fifth load, and all or part of the mounting heads different from the head to be changed are driven. By configuring the fourth head driving section to be driven by the sixth load, the maintenance of the mounter 1 can be rationally controlled.

<Third Embodiment>
In the above first and second embodiments, the component mounter 1 is exemplified as an example of production equipment to be controlled by the control device 100, but other production equipment such as a board production system can also be The present invention can be applied.

FIG. 8 is a diagram schematically showing the configuration of a board production system, which is an example of production equipment equipped with a control device according to the third embodiment of the present invention. FIG. 9 is a diagram schematically showing an example of maintenance timing control in the board production system shown in FIG. This board production system 300 is a system for producing a board B on which a component P is mounted (mounted), using the board B as an example of the "workpiece" of the present invention. A board production system 300 includes a printer 310, two component mounters 320 and 330 having the same configuration as the component mounter 1, an inspection device 340 before reflow, a reflow device 350, and an inspection device after reflow. 360. These devices (=printing device 310+component mounting device 320+component mounting device 330+inspection device 340+reflow device 350+inspection device 360) are arranged in a row in this order from upstream to downstream. Further, a delivery conveyor (not shown) is arranged between each device to transport and deliver the substrate B between the devices. The transfer conveyor conveys the substrate B in the substrate transfer direction (X direction) and transfers it from the upstream device to the downstream device.

The printing apparatus 310 performs a printing operation of screen-printing a bonding material such as solder onto the substrate B as a production operation of the substrate B. FIG. The component mounting apparatuses 320 and 330 perform the mounting work of mounting the component P on the board B printed by the printing device 310 as the board B production work. The pre-reflow inspection apparatus 340 performs an inspection operation for inspecting the substrate B on which the component mounting operations have been performed by the component mounting apparatuses 320 and 330 as an inspection operation for the substrate B. FIG. The reflow device 350 melts and solidifies the bonding material printed on the substrate B as a production operation of the substrate B, thereby bonding the component P to the substrate B that has been inspected by the inspection device 340 before reflow. Perform reflow work. The post-reflow inspection apparatus 360 performs an inspection operation of inspecting the substrate B on which the reflow operation has been performed by the reflow apparatus 350 as an inspection operation of the substrate B. FIG.

Each of the devices 310, 320, 330, 340, 350, and 360 that constitute the board production system 300 has at least one or more driving units, and corresponds to an example of the "working device" of the present invention. In the circuit board production system 300, as is conventionally known, drive units such as motors included in each device are operated in a normal mode according to preset production plan information. Here, the control information for operating in the normal mode is called "first production plan information". If the board production system 300 is continuously operated only with this first production plan information, maintenance timings Ta and Tb0 of the component mounting apparatuses 320 and 330 may occur at the same time, as shown in FIG. 9(a), for example. I had the following problem: When one maintenance worker works on each of the component mounters 320 and 330 for one day, it is necessary to stop the component mounters 320 and 330 for two days by matching the maintenance timings Ta and Tb0. As a result, the board production system 300 is also stopped for two days, resulting in a decrease in the operating rate.

Therefore, in the third embodiment of the control device 100, control information and Control information for operating in the load reduction mode (FIG. 9(c)) with a lower load than the normal mode is prepared as the second production planning information. Then, as shown in FIG. 9A, both component mounting apparatuses 320 and 330 are kept in the normal mode until the user specifies one of the component mounting apparatuses 320 and 330 as the load change target apparatus. , the board production system 300 can be operated in an optimized state. Further, for example, as shown in FIG. 9B, when the user specifies the component mounting apparatus 330 as a change target apparatus that operates in the load increase mode, the load applied to the driving unit included in the component mounting apparatus 330 is higher than that in the normal mode. It may be configured to increase. In this case, as shown in the figure, the maintenance timing Tb of the component mounting apparatus 330, which is the apparatus to be changed, is earlier than that in the normal mode (timing Tb0), that is, at timing Tb1. Conversely, for example, as shown in FIG. 9(c), when the user specifies the component mounting apparatus 330 as a device to be changed that operates in the load reduction mode, the load applied to the drive unit included in the component mounting apparatus 330 is lower than that in the normal mode. may also be reduced. In this case, as shown in the figure, the maintenance timing of the component mounting apparatus 330, which is the apparatus to be changed, is later than that in the normal mode (timing Tb0), that is, it is executed at timing Tb2. In this way, the maintenance of the substrate production system (production equipment) 300 can be rationally controlled so that the maintenance timings of the devices are shifted from each other. Of course, the component mounting apparatus 320 may be identified as the change target apparatus. Further, when both of the component mounters 320 and 330 are specified as the devices to be changed, control is performed so that one device mounts components in the load increase mode and the other device mounts components in the load reduction mode. good too. As a result, the intervals between maintenance timings can be made wider than those shown in FIGS. 9B and 9C.

In order to satisfactorily control such maintenance timing, the control device 100 according to the third embodiment includes an arithmetic processing unit 110, a storage unit 120, a drive control unit 130, an imaging control unit, as in the second embodiment. 140 and an input unit 150 . That is, the storage unit 120 stores in advance a normal mode (first production plan information), a load increase mode (second production plan information), and a load reduction mode (second production plan information). Here, as a specific means for increasing or decreasing the load, the number of components allocated between the component mounting apparatuses 320 and 330 may be changed. Further, the speed of the driving units included in the component mounting apparatuses 320 and 330 may be uniformly increased or decreased. Furthermore, it may be configured such that part of the components to be mounted by the component mounting apparatus 320 is mounted by the component mounting apparatus 330 . A load increase mode or a load reduction mode can be set by using these means alone or in combination.

The input unit 150 accepts designation of the device to be changed by the user and provides device information on the device to be changed to the arithmetic processing unit 110 . Arithmetic processing unit 110 includes a CPU, a ROM, and a RAM, and functions as a device specifying unit that specifies a change target device based on device information from input unit 150 . Then, the arithmetic processing unit 110 selectively reads the normal mode, the load increase mode, or the load reduction mode from the storage unit 120 to produce the board B on which the component P is mounted.

As described above, according to the third embodiment, the maintenance timings of the component mounting apparatuses 320 and 330 are adjusted according to the user's identification of the change target apparatus. As a result, it is possible to mutually adjust the maintenance timing between devices, that is, to rationally control the maintenance of the board production system (production equipment) 300 .

In the third embodiment, the component mounting apparatuses 320 and 330 are specified as the change target apparatuses. good.

<Fourth Embodiment>
A board production system 300 shown in FIG. It can be said that the ideal operating condition is that these apparatuses 310, 320, 330, 340, 350, and 360 are operated in the normal mode and the takt time is the same. However, in practice, the takt times of the devices 310, 320, 330, 340, 350, and 360 have relatively large variations. Therefore, the slowest device having the slowest tact time is specified from among the devices 310, 320, 330, 340, 350, and 360 constituting the board production system 300, and the devices other than the slowest device are operated at a low load. The board production system 300 may be operated in a state in which variations in the tact times of 310, 320, 330, 340, 350, and 360 are suppressed (fourth embodiment).

10A and 10B are diagrams schematically showing operations performed by the fourth embodiment of the control device according to the present invention, and show a case where the entire board production system shown in FIG. 1 schematically shows the variation in takt time when the device is operated in the load reduction mode. The following two points are the major differences between the control device 100 according to the fourth embodiment and the third embodiment. That is, the device identification unit of the arithmetic processing unit 110 has a function of identifying the slowest device, and the takt times of the devices 310, 320, 330, 340, 350, and 360 are shown in FIG. , then identify the reflow device 350 as the slowest device. Further, in the fourth embodiment, the storage unit 120 does not have the load increase mode, and stores the normal mode and the load reduction mode. Other configurations are basically the same as those of the third embodiment. Therefore, hereinafter, the same reference numerals are given to the same configurations, and the description of the configurations is omitted.

In the fourth embodiment, the storage unit 120 stores, as the load reduction mode (second production plan information), control information that uniformly increases or decreases the speed of the drive units included in each device. Further, the arithmetic processing unit 110 operates in the normal mode at a predetermined timing such as when a takt adjustment command is received from the user via the input unit 150 or when a predetermined time has passed since the start of the substrate production system 300. The devices 310, 320, 330, 340, 350, and 360 constituting the board production system 300 are obtained. For example, as shown in FIG. 10A, when the takt time variation SC0 is equal to or greater than a certain value, the device identifying unit of the arithmetic processing unit 110 identifies the reflow device 350 as the slowest device. Then, the arithmetic processing unit 110 maintains the information for controlling the operation of the reflow device 350 in the normal mode (first production plan information), and controls the operations of the other devices 310, 320, 330, 340, and 360. By switching the information for controlling from the normal mode to the load reduction mode (second production planning information), as shown in FIG. are doing.

As described above, according to the fourth embodiment, when there is a large variation in takt time, the production plan switching unit of the arithmetic processing unit 110 switches the operation of devices other than the slowest device from the normal mode to the load reduction mode. Therefore, it is possible to rationally control the load applied to the drive units included in the devices 310, 320, 330, 340, 360 other than the slowest device. As a result, it is possible to suppress the thermal influence generated in the devices 310, 320, 330, 340, and 360 and postpone the maintenance timing, compared to operating the entire board production system 300 in the normal mode all the time.

In the fourth embodiment, attention is paid to variations in takt time, but switching from the normal mode to the load reduction mode may be performed in consideration of the product type to be produced and the performance difference of the device. In other words, for a device that does not need to operate at the maximum speed, the speed of the drive unit can be reduced according to the takt time of the slowest device, that is, by switching to the load reduction mode, the progress of deterioration of the drive unit can be delayed. can. This is suitable for systematically updating the equipment that constitutes the board production system 300, and exhibits excellent effects particularly when there is a large difference in performance between the new equipment and the old equipment.

The present invention is not limited to the above-described embodiments, and various modifications other than those described above can be made without departing from the spirit of the present invention. For example, in the first and second embodiments, the mounter 1 is exemplified as the "production facility" of the present invention, and in the third and fourth embodiments, the board production system 300 is the "production facility" of the present invention. Although exemplified, the present invention may be applied to control devices that control production equipment other than these. In short, the present invention is applicable to a control device and a control method for controlling production equipment provided with a plurality of drive units, and rationally controls maintenance of production equipment provided with a plurality of drive units. can do.

INDUSTRIAL APPLICABILITY The present invention can be applied to general control technology for controlling production equipment provided with a plurality of drive units.

1... Component mounting machine (production equipment)
100... Control device 110... Arithmetic processing unit 121... First production program (121) (first production plan information)
122 Second production program (122) (second production plan information)
123... Third production program (first production plan information)
124 Fourth production program (second production plan information)
150... Input unit 300... Board production system (production equipment)
310... Printing device (working device)
320, 330... Component mounting device (working device)
340, 360 Inspection device (work device)
350... Reflow device (working device)
B... Substrate (workpiece)
D1... First load difference D2... Second load difference H1... (First) mounting head H2... (Second) mounting head H3 to H5... Mounting head L1... First head load information L2... Second head load information P... Parts Mr... R-axis motor (drive part, head drive part)
Mx: X-axis motor (drive unit, head drive unit)
My... Y-axis motor (drive unit, head drive unit)
Mz: Z-axis motor (drive unit, head drive unit)

Claims (12)

A control device for a production facility provided with a plurality of drive units,
a first operation control unit that controls operations of the plurality of drive units according to first production plan information planned in advance;
a production plan switching unit for switching from the first production plan information to the second production plan information;
a second operation control unit that controls operations of the plurality of drive units according to the second production plan information;
The second production plan information increases or decreases at least some of the plurality of loads applied to the plurality of drive units when the first operation control unit controls the plurality of drive units. A control device for production equipment, characterized in that it is control information for optimizing the maintenance of a production facility. A control device for a production facility according to claim 1,
The production facility has at least two mounting heads for mounting components on a substrate,
The plurality of driving units includes a plurality of head driving units that respectively drive the plurality of mounting heads,
The first operation control unit drives the plurality of heads so that the components are mounted according to the first production planning information before the production planning switching unit switches to the second production planning information. control the department,
The second operation control unit drives the plurality of heads so that the components are mounted according to the second production planning information after the production planning switching unit switches to the second production planning information. The control device of the production equipment that controls the department. A control device for a production facility according to claim 2,
the plurality of mounting heads includes a first mounting head and a second mounting head;
The plurality of head driving units includes a first head driving unit that drives the first mounting head and a second head driving unit that drives the second mounting head,
The first production plan information is a first production program for driving the first head driving section and the second head driving section with a first load and a second load lower than the first load, respectively;
the second production plan information is a second production program for driving the first head driving section and the second head driving section with a third load and a fourth load higher than the third load, respectively;
The production plan switching unit is a control device for production equipment that alternately switches the first production program and the second production program. A control device for production equipment according to claim 3,
A load acquiring unit that acquires first head load information obtained by accumulating the load required to move the first mounting head and second head load information obtained by accumulating the load required to move the second mounting head. ,
The production plan switching unit
switching from the first production planning information to the second production planning information when a first load difference obtained by subtracting the second head load information from the first head load information becomes equal to or greater than a first predetermined value;
When a second load difference obtained by subtracting the first head load information from the second head load information becomes equal to or greater than a second predetermined value, the production equipment control device switches from the second production plan information to the first production plan information. A control device for a production facility according to claim 2,
further comprising a head identification unit that identifies a change target head to be subjected to load change from the plurality of mounting heads;
The first production plan information drives a third head driving section that drives the head to be changed with a fifth load, and drives a fourth head driving section that drives a mounting head different from the head to be changed with a sixth load. is a third production program for
The second production plan information drives the load of the third head driving section with a seventh load that is higher than the fifth load, and drives the fourth head driving section with an eighth load that is lower than the sixth load. is the fourth production program to
The production plan switching unit adjusts the maintenance timing of the plurality of mounting heads by switching from the third production program to the fourth production program in accordance with the identification of the head to be changed by the head identification unit. controller. A control device for production equipment according to claim 5,
A control device for production equipment, further comprising an input unit that accepts selection of the head to be changed by a user and provides head information on the head to be changed to the head identifying unit. A control device for a production facility according to claim 1,
further comprising a device identification unit that identifies a change target device to be subjected to load change from among a plurality of work devices constituting the production facility;
each of the plurality of working devices includes at least one or more of the driving units;
the first production plan information is control information for operating the driving unit included in the working device in a normal mode;
The second production plan information is control information for operating the drive unit included in the work device in a load increase mode with a higher load than in the normal mode or a load reduction mode with a lower load than in the normal mode,
The production plan switching unit maintains the information for controlling the operation of the work devices other than the change target device in the first production plan information, and according to the selection of the change target device by the device specifying unit. A control device for production equipment that selectively adjusts the maintenance timing of the device to be changed by switching the information for controlling the operation of the device to be changed from the first production plan information to the second production plan information. . A control device for production equipment according to claim 7,
the second production plan information is control information for operating the work device in the load increase mode;
The production plan switching unit switches the information for controlling the operation of the change target device from the first production plan information to the second production plan information, thereby advancing the maintenance timing of the change target device. Control device. A control device for production equipment according to claim 7,
the second production plan information is control information for operating the work device in the load reduction mode;
The production plan switching unit switches the information for controlling the operation of the change target device from the first production plan information to the second production plan information, thereby delaying the maintenance timing of the change target device. Control device. A control device for production equipment according to any one of claims 7 to 9,
A control device for production equipment, further comprising an input unit that accepts selection of the device to be changed by a user and provides device information about the device to be changed to the device specifying unit. A control device for a production facility according to claim 1,
further comprising a device identifying unit that identifies the slowest device with the slowest tact time from among the plurality of work devices constituting the production facility;
The plurality of work devices are devices that work on a work piece using the drive unit,
wherein the production facility connects the plurality of working devices in a row and sequentially conveys the work piece between the plurality of working devices;
the first production plan information is control information for operating the driving unit included in the working device in a normal mode;
The second production plan information is control information for operating the driving unit included in the working device in a load reduction mode with a load lower than that in the normal mode,
The production plan switching unit maintains the information for controlling the operation of the slowest device in the first production plan information, and changes the information for controlling the operation of the work devices other than the slowest device. A control device for production equipment that suppresses variations in the tact time among the plurality of work devices by switching from the first production plan information to the second production plan information. A control method for a production facility provided with a plurality of drive units,
a step of controlling the plurality of drive units according to first production plan information planned in advance;
a step of switching from the first production planning information to the second production planning information;
a step of controlling the plurality of drive units according to the second production plan information;
The second production planning information increases or decreases at least some of the plurality of loads respectively applied to the plurality of driving units when controlling the plurality of driving units according to the first production planning information. A method of controlling production equipment, wherein the information is information for controlling the operations of the plurality of drive units so as to optimize maintenance of the equipment.

Images