JP2010045295A - Original point positioning control method for electric component feeder in component mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an original point positioning control method for electric component feeders in a component mounting device, which reduces the required maximum power of the component mounting device when positioning the original point of a component pickup position concerning multiple attached electric component feeders. <P>SOLUTION: The component mounting device 10 includes: a plurality of slots S for attaching the electric component feeders F; a control part 12 for controlling the operations of the electric component feeders F attached to the slots S; and a communication passage 14 between the electric component feeders F and the control part 12. The electric component feeders F attached to the slots S are divided into a plurality of groups within a range of power to be simultaneously suppliable from the component mounting device 10 to the electric component feeders F. The sequence of electric component feeders F for positioning the original point is determined by each group, thereby simultaneously positioning the original points concerning the plurality of groups. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an origin position alignment control method for an electric component supply device in a component mounting apparatus. More specifically, the present invention relates to a method for adjusting the origin position of a component pickup position for a plurality of attached electric component supply devices. The present invention relates to an origin position alignment control method for an electric component supply apparatus in a component mounting apparatus that can reduce the required maximum power.

  FIG. 6 is a schematic diagram of the electronic component mounting apparatus. As shown in FIG. 6, the electronic component mounting apparatus 201 includes a circuit board conveyance path 215 extending in the left-right direction slightly rearward from the central portion, and the apparatus 201. A component supply unit 211 that is disposed on the front (lower side in the drawing) and supplies components mounted on the circuit board 210, and an X-axis moving mechanism 212 and a Y-axis moving mechanism that are disposed on the front of the apparatus 201 214.

  The X-axis moving mechanism 212 moves the suction head unit 213 provided with a suction nozzle 213a for sucking parts in the X-axis direction, and the Y-axis moving mechanism 214 moves the X-axis moving mechanism 212 and the suction head unit 213 to the Y-axis. Move in the direction. The mounting head unit 213 includes a Z-axis moving mechanism that moves the suction nozzle 213a up and down in the vertical direction (Z-axis direction), and a θ-axis movement mechanism that rotates the suction nozzle about the nozzle axis (suction axis). It has. The suction head unit 213 is mounted with a substrate recognition camera 217 that captures a substrate mark formed on the circuit substrate 210 so as to be attached to the support member. In addition, a component recognition camera (imaging unit) 216 that images the component sucked by the suction nozzle 213a from below is disposed on the side of the component supply unit 211.

  FIG. 7 shows the configuration of the control system of the electronic component mounting apparatus. Reference numeral 220 denotes a microcomputer (CPU) that controls the entire apparatus, and a controller (control means) that includes a RAM, a ROM, and the like, to which the following configurations 221 to 231 are connected to control each.

  The X-axis motor 221 is a drive source for the X-axis movement mechanism 212 and moves the suction head unit 213 in the X-axis direction. The Y-axis motor 222 is a drive source for the Y-axis movement mechanism 214 and is a Y-axis movement mechanism. 214 is driven in the Y-axis direction, so that the suction head portion 213 can move in the X-axis direction and the Y-axis direction.

  The Z-axis motor 223 is a drive source for a Z-axis drive mechanism (not shown) that moves the suction nozzle 213a up and down, and moves the suction nozzle 213a up and down in the Z-axis direction (height direction). The θ-axis motor 224 is a drive source for a θ-axis rotation mechanism (not shown) of the suction nozzle 213a, and rotates the suction nozzle 213a around the nozzle center axis (suction axis).

  The image recognition device 227 performs image recognition of the component 218 sucked by the suction nozzle 213a, and includes an A / D converter 227a, a memory 227b, and a CPU 227c. The analog image signal output from the component recognition camera 216 that images the picked-up component 218 is converted into a digital signal by the A / D converter 227a and stored in the memory 227b, and the CPU 227c is based on the image data. Recognize sucked parts. That is, the image recognition device 227 calculates the component center and the suction angle, and recognizes the suction posture of the component. In addition, the image recognition device 227 calculates the board mark position by processing the board mark image captured by the board recognition camera 217.

  Further, the image recognition device 227 processes the image data of the component 218 captured by the component recognition camera 216 and the board mark data captured by the substrate recognition camera 217, and transfers both correction data to the control means 220.

  The keyboard 228 and the mouse 229 are used for inputting data such as component data.

  The storage device 230 is configured by a flash memory or the like, and is used to store component data input by a keyboard 228 and a mouse 229, component data supplied from a host computer (not shown), and the like.

  The display device (monitor) 231 displays component data, calculation data, an image of the component 218 captured by the component recognition camera 216, and the like on the display surface 231a.

  Actually, at the stage where the production of the board is started and the parts are mounted on the circuit board, the board correction data (Δx, Δy, Δθ) of the circuit board 210 based on the board mark imaged in advance by the board recognition camera 217 is stored in the storage device 230. Stored in Then, the component supplied from the component supply device 211 is sucked by the suction nozzle 213a, the suction head unit 213 is moved to the upper part of the component recognition camera 216, and the part is imaged by the camera. The captured image of the part is subjected to image processing by the image recognition device 227 and the correction data is transferred to the control means 220. The control means 220 reads the board correction data and the component data of the component from the storage device 230, and based on the component data and the component center and component inclination calculated by the transferred image recognition device 227, Recognizes the mounting position and suction orientation. Subsequently, when a horizontal position shift between the component center and the suction center at the component mounting position and an angle shift regarding the direction of the component are detected, the horizontal position shift and the angle shift are detected by the X-axis motor 221 and the Y-axis. By driving the motor 222 and the θ-axis motor 224, correction is performed, and the component is mounted at a predetermined posture (reference angle) at a predetermined circuit board position.

  The electronic component mounting apparatus has been described above. In this field as well, as in the other machine field, efforts are being made to reduce costs.

  For example, as shown in FIG. 6 (FIG. 1 of Patent Document 1), Patent Document 1 proposes a technique for appropriately controlling connection and disconnection of a power source to reduce power consumption. Specifically, this technology is based on component supply drive units 107A and 107B for driving the component supply devices 101A and 101B, a component transfer driving device 108 for driving the component transfer device 102, and a substrate positioning device for driving the substrate positioning device 103. A power source for power supply and a power source for control can be separately connected to and disconnected from each drive device 109 by a command from the control device 104. For this reason, when the control device 104 detects the occurrence of a condition in which each component of the component mounting apparatus 100 is individually stopped, the control device 104 can shut off the power supply to the stopped drive device. As a result, the component mounting apparatus 100 eliminates unnecessary power consumption and can continue the production operation with the minimum necessary power.

JP 2000-332500 A (FIG. 1)

  Here, the electric tape feeder that is often used as a component supply device requires relatively large electric power for driving, but the component mounting device 100 disclosed in Patent Document 1 as described above, It is possible to cut off the power supply to the parts supply apparatus that is not in use, thereby eliminating unnecessary power consumption and continuing production operation with the minimum necessary power.

  However, in general, in the component mounting apparatus, it is necessary to align the origin of the component pickup position of the attached electric tape feeder before starting the component mounting. This origin alignment operation is performed simultaneously for all the electric tape feeders attached to the component mounting apparatus, for example, when the component mounting apparatus is turned on. The electric power required to drive all the electric tape feeders attached to the component mounting apparatus at the same time has become large. For this reason, it is necessary to increase the capacity of the power supply prepared for the component mounting apparatus, leading to an increase in cost.

  The present invention has been made in view of such a problem, and reduces the required maximum power of a component mounting apparatus when aligning the origin of a component pickup position for a large number of attached electric component supply apparatuses. It is an object of the present invention to provide an origin position alignment control method for an electric component supply apparatus in a component mounting apparatus capable of performing the above.

  An origin position alignment control method for an electric component supply device in a component mounting apparatus according to the present invention that solves the above-described problems includes a plurality of slots for attaching an electric component supply device, and an electric component supply attached to the slot. In a component mounting apparatus having a control unit for controlling the operation of the apparatus, and a communication path between the electric component supply apparatus and the control unit, the electric component supply apparatus attached to the slot is mounted on the component mounting apparatus. Dividing into a plurality of groups within the range of power that can be simultaneously supplied from the device to the electric component supply device, determining the order of the electric component supply device that performs origin position alignment for each divided group, and for the plurality of groups It is characterized in that the origin is aligned at the same time.

  It is preferable that the number of the groups is the same as the number of components that the component mounting apparatus can simultaneously suck.

  According to the present invention, the electric component supply device mounted in the slot is divided into a plurality of groups within the range of power that can be supplied from the component mounting device to the electric component supply device, and the origin position is determined for each divided group. The order of the electric component supply devices to be aligned is determined, and the origin alignment is performed at the same time in the multiple groups. Therefore, even if the number of electric component supply devices to be installed increases, the required maximum power of the component mounting device can be supplied. Therefore, the required maximum power of the component mounting apparatus can be reduced as compared with the conventional method in which the origin position adjustment is performed simultaneously for all the electric component supply apparatuses attached to the slots.

  For this reason, the enlargement of the power supply prepared for a component mounting apparatus can be suppressed, and cost can be reduced.

  In particular, when the number of the groups is the same as the number of components that the component mounting apparatus can adsorb at the same time, the power required to perform the origin alignment of the electric component supply device is The maximum number of components that can be picked up at the same time is not greater than the power required when the component mounting device picks up and mounts on the board, and the origin of the electric component supply device is aligned. Thus, the required maximum power of the component mounting apparatus does not increase. In addition, when the number of the groups is the same as the number of components that the component mounting apparatus can simultaneously suck, the required maximum power of the component mounting apparatus for the origin alignment of the electric component supply apparatus Within a range where it is not necessary to increase the time, it is possible to shorten the time from the start to the end of alignment of the origin of the electric component supply device to the maximum.

  Hereinafter, with reference to the drawings, an origin position alignment control method of an electric component supply device in a component mounting apparatus for reducing the required maximum power of the component mounting apparatus according to an embodiment of the present invention will be specifically described.

  FIG. 1 is a control block diagram of a component mounting apparatus 10 that performs the method according to the present embodiment.

  The component mounting apparatus 10 communicates with a plurality of slots S which are insertion ports for attaching an electric tape feeder F (hereinafter simply referred to as a tape feeder F) and a tape feeder F attached to the slot S. The control part 12 which performs control, and the communication path 14 for the control part 12 to communicate with the tape feeder F are provided. Here, the component mounting apparatus 10 has 30 slots S.

  The component mounting apparatus 10 includes six suction nozzles (not shown), and the maximum number of components that can be picked up simultaneously is six. For this reason, the component mounting apparatus 10 is connected to a power source that can supply at least the electric power necessary for the six tape feeders F to operate simultaneously.

  The slots S are insertion ports provided in the component mounting apparatus 10 for attaching the tape feeder F, and each has an identification number (hereinafter may be referred to as ID). The number of slots S included in the component mounting apparatus 10 illustrated in FIG. 1 is 30, and IDs assigned to the slots S are 1 to 30.

  When the power of the component mounting apparatus 10 is turned on, the tape feeder F attached by being inserted into the slot S also turns on the control power to all the tape feeders F and acquires the ID of the slot S in which it is attached. Then, the tape feeder F notifies the control unit 12 of the ID of the slot S to which the tape feeder F is attached via the communication path 14. At this time, the tape feeder F notifies the control unit 12 of information on how many mm the feeder itself is. As a result, the control unit 12 determines whether or not the tape feeder F is attached to each slot S to which the ID is assigned, and if so, how many mm the attached tape feeder F is. Recognize that.

  The feed pitch of the tape feeder F is 8 mm, 16 mm, 24 mm, 56 mm, etc., depending on the type. Since the length of feeding the tape for the origin position alignment is the maximum of the feed pitch, the longer the feed pitch length is, the longer the maximum time for origin position alignment is.

  In FIG. 2, the control unit 12 recognizes whether or not the tape feeder F is attached to each slot S having IDs 1 to 30 and how many millimeters the attached tape feeder F is a feeding feeder. It is an example of the result.

  After performing the recognition as shown in FIG. 2, the control unit 12 determines the order of the tape feeders F that perform origin position alignment. In determining the order, the recognized tape feeders F are arranged in the order of increasing feed pitch length, and when there is a tape feeder F having the same feed pitch length, the IDs of the installed slots S are arranged in ascending order. FIG. 3 shows the result of determining the order of origin position alignment in this way.

  Further, the control unit 12 determines the order in which the origin alignment is performed, and then creates a time chart for performing the origin alignment of the attached tape feeder F based on the determination result.

  Here, the component mounting apparatus 10 has the maximum number of components that can be picked up simultaneously, and the component mounting apparatus 10 can supply at least power necessary for the six tape feeders F to operate simultaneously. Connected to a power source that can. Therefore, if the number of tape feeders F that simultaneously perform the home position alignment is limited to 6 and the home position alignment is performed sequentially to perform the home position alignment of all attached tape feeders F, the tape feeder F The required maximum power of the component mounting apparatus 10 does not increase due to the origin position alignment. Therefore, a time chart for sequentially performing the home position alignment by limiting the number of the tape feeders F that perform the home position alignment to six is created.

  For this purpose, it is necessary to divide the tape feeder F attached to the component mounting apparatus 10 into six groups (here, groups 1 to 6). This grouping is performed by allocating the tape feeder F to any of the groups 1 to 6 in accordance with the order of origin position alignment in FIG. In this allocation, allocation is performed so that the maximum time required to perform the origin position alignment is as even as possible in the groups 1 to 6. Specifically, when allocating a certain tape feeder F to any of the groups 1 to 6, the group 1 to 6 is assigned to the group having the shortest maximum time required for the origin alignment at that time. Allocate tape feeder F. If there is a group with the same maximum required time allocated, allocate it to the smallest group number.

In this way, when the tape feeders F attached to the component mounting apparatus 10 are allocated to the groups 1 to 6, a time chart as shown in FIG. 4 is obtained. In FIG. 4, the maximum time required for a certain tape feeder F to perform origin position alignment is represented by the length of the high level portion corresponding to the tape feeder F. The number written below the high level part is the ID of the slot S to which the tape feeder F is attached. For example, the maximum time required for the tape feeder F attached performs alignment home position in the slot S of the ID11, 4, is represented by a length L _11.

  Next, how the origin position alignment of each tape feeder F is performed by the method according to the present embodiment will be described with reference to the flowchart shown in FIG.

  When the power of the component mounting apparatus 10 is turned on (step S1), each tape feeder F acquires the ID of the slot S to which it is attached (step S2). Then, each tape feeder F notifies the control unit 12 via the communication path 14 of the ID of the slot S to which it is attached and how many mm the feeder is itself (step S3).

  Thereby, the control unit 12 recognizes whether or not the tape feeder F is attached to each slot S having IDs 1 to 30 and how many mm the attached tape feeder F is a feeding feeder. (Step S4).

  Next, an origin position alignment button (not shown) of the component mounting apparatus 10 is pressed to start origin position alignment for each attached tape feeder F (step S5).

  When aligning the origin of the tape feeder F, first, the control unit 12 of the component mounting apparatus 10 checks the maximum number of components that can be simultaneously picked up (step S6). Here, the maximum number of components that can be simultaneously picked up by the component mounting apparatus 10 is six.

  Next, the recognized tape feeders F are arranged in ascending order of the feed pitch length, and when there are tape feeders F having the same feed pitch length, the IDs of the installed slots S are arranged in ascending order, and FIG. As shown, the sequence of the origin alignment of each recognized tape feeder F is set (step S7).

  Next, the tape feeders F are allocated to the groups 1 to 6 in accordance with the order of origin alignment of the tape feeders F set in step S7. At that time, as described above, the tape feeder F to be allocated is allocated in consideration of the time required for the origin alignment, and the maximum time required for the origin alignment is allocated as evenly as possible in the groups 1 to 6. Thus, a time chart as shown in FIG. 4 is obtained (step S8).

  Next, according to the time chart obtained in step S8, the origin positions are simultaneously adjusted for groups 1 to 6 (step S9). At this time, the control unit 12 instructs the tape feeder F to align the origin via the communication path 14. The tape feeder F that has completed the origin alignment notifies the control unit 12 that the origin alignment has been completed via the communication path 14. Upon receiving this notification, the control unit 12 instructs the next tape feeder F to align the origin according to the time chart obtained in step S8. Thus, the origin position alignment of all recognized tape feeders F is executed according to the time chart obtained in step S8.

  It is determined whether or not the home position alignment has been completed for all the tape feeders F recognized by the control unit 12 (step S10), and when the home position alignment has been completed for all the tape feeders F, the home position alignment operation is completed.

  By performing origin position alignment for the tape feeder F attached to the component mounting apparatus 10 as described above, the number of tape feeders F that simultaneously perform origin position alignment is limited to the same number as the maximum number of components that can be picked up simultaneously. By doing so, the maximum power required by the component mounting apparatus 10 can always be within the power required to drive the same number of tape feeders F as the maximum number of components that can be picked up simultaneously.

  The tape feeder F attached to the component mounting apparatus 10 is allocated so that the maximum number of components that can be picked up at the same time and the number of groups are the same. However, in the time chart obtained in step S8, it is necessary for the origin position alignment. Since the maximum time is allocated to be as uniform as possible among the groups, the time required to complete the home position alignment does not take long for a specific group, and all the home position alignment operations are completed. The time until is shortened.

  In the embodiment described above, the number of slots S of the component mounting apparatus 10 is 30, and the maximum number of tape feeders F that can be attached to the component mounting apparatus 10 is 30, but the number of slots S is changed. The number of tape feeders F attached to the component mounting apparatus 10 may be increased from 30 to more than 30. Even in this case, it is possible to limit the number of tape feeders F that simultaneously perform origin position alignment to the same number as the maximum number of components that can be picked up at the same time. The power can be always within the power required to drive the same number of tape feeders F as the maximum number of parts that can be picked up.

  In the embodiment described above, the maximum number of components that can be picked up simultaneously by the component mounting apparatus 10 is six, and the component mounting apparatus 10 has at least power necessary for the six tape feeders F to operate simultaneously. Connected to a power supply that can supply. Therefore, the number of the tape feeders F attached to the component mounting apparatus 10 is adjusted to the origin position alignment by limiting the number of origin position adjustments to six at the same time, but the number of the origin position alignments simultaneously is six. It may not be 5 or less or 7 or more.

  However, when the number of home position alignments is 5 or less at the same time, the home position alignment is performed for all tape feeders F attached to the component mounting apparatus 10 than when the number of home position alignments is 6 simultaneously. It takes longer time to complete the process. In addition, when the number of home positions to be simultaneously adjusted is 7 or more, the required maximum power of the component mounting apparatus 10 is larger than when the number of home positions to be simultaneously adjusted is 6, and the origin of the tape feeder F is increased. Due to the alignment, the required maximum power of the component mounting apparatus 10 increases, and the capacity of the power source that needs to be prepared for the component mounting apparatus 10 increases.

  Therefore, in the component mounting apparatus 10 in which the maximum number of components that can be picked up at the same time is 6, it is preferable that the number of origin positions to be simultaneously adjusted is six.

  Moreover, in embodiment described above, although the tape feeder F was used as a component supply apparatus, the component supply apparatus to be used is not limited to a tape feeder.

Control block diagram of a component mounting apparatus that implements the method according to the present embodiment Table showing an example of the results recognized by the control unit for the tape feeder installation status Table showing the result of determining the order of origin alignment of the installed tape feeder Time chart when the tape feeder aligns the origin according to the above sequence Flow chart showing the operation procedure of the origin alignment of the attached tape feeder Schematic diagram of electronic component mounting equipment The figure which shows the structure of the control system of an electronic component mounting apparatus Schematic system diagram showing a prior art control system for reducing power consumption (FIG. 1 of Patent Document 1)

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Component mounting apparatus 12 ... Control part 14 ... Communication path F ... Tape feeder S ... Slot

Claims (2)

A plurality of slots for attaching the electric component supply device, a control unit for controlling the operation of the electric component supply device attached to the slot, and a communication path between the electric component supply device and the control unit In a component mounting apparatus having
The electric component supply device attached to the slot is divided into a plurality of groups within the range of electric power that can be supplied simultaneously from the component mounting device to the electric component supply device, and the origin is aligned for each divided group. A method of controlling an origin alignment of an electric component supply apparatus in a component mounting apparatus, wherein the order of the electronic component supply apparatus is determined, and the origin alignment is performed simultaneously for the plurality of groups.   2. The origin alignment control of the electric component supply apparatus in the component mounting apparatus according to claim 1, wherein the number of the groups is the same as the number of components that the component mounting apparatus can simultaneously suck. Method.

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