CN101657087B - Control method of electric component feeding device - Google Patents

Abstract

The present invention provides a control method of an electric component supply device capable of reducing the maximum power required by a component mounting device when positioning the origin of a component pick-up position for a plurality of installed electric component supply devices. The component mounting device (10) has: a plurality of slots S for mounting electric tape feeders F; performing control; and a communication path (14) between the electric component supply device F and the control unit (12), wherein power can be simultaneously supplied from the component mounting device (10) to the electric component supply device F Inside, the electric component supply devices F installed in the slots S are allocated to a plurality of groups, and the order of the electric component supply devices F for positioning the origin position is determined for each allocated group, and the Multiple groups perform origin position positioning at the same time.

Description

Control method of electric parts supply device

technical field

The present invention relates to a control method of an electric component supply device, which performs positioning of an origin position of a component pick-up position for a plurality of electric component supply devices.

Background technique

As shown in FIG. 6, the electronic component mounting apparatus 201 has: a conveyance path 215 for the circuit board 210, which is arranged on the rear side of the electronic component mounting apparatus 201, and extends in the left and right directions; The front side of 201 supplies the components mounted on the circuit board 210; the suction head 213 is arranged above the conveyance path 215 and the component supply part 211, and has a suction nozzle 213a for suctioning components; and the X-axis The moving mechanism 212 and the Y-axis moving mechanism 214 respectively move the suction head 213 along the X-axis direction and the Y-axis direction.

In addition, the suction head 213 has a Z-axis movement mechanism, which can make the suction nozzle 213a rise and fall in the vertical direction (Z-axis direction), and also has a θ-axis movement mechanism, which makes the suction nozzle rotate with the suction nozzle axis (suction axis). Rotate for the center. In addition, a substrate recognition camera 217 is mounted on the suction head 213 and is attached to a supporting member to image a substrate mark formed on the circuit substrate 210 . In addition, a component recognition camera (imaging unit) 216 is arranged on a side surface of the component supply unit 211, and takes an image of the component sucked to the suction nozzle 213a from below.

Electronic component mounting apparatus 201 has a control system configuration as shown in FIG. 7 . 220 is a control part (control unit), which consists of a microcomputer (CPU) which controls the whole apparatus, RAM, ROM, etc., and is connected with the structure of 221-231 below, and controls them respectively.

The X-axis motor 221 is the driving source of the X-axis moving mechanism 212, and the suction head 213 is moved along the X-axis direction. In addition, the Y-axis motor 222 is the driving source of the Y-axis moving mechanism 214, and makes the Y-axis moving mechanism 214 move along the Y axis. direction, whereby the suction head 213 can move in the X-axis direction and the Y-axis direction.

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

The image recognition device 227 recognizes the image of the component 218 sucked by the suction nozzle 213a, and is composed of an A/D converter 227a, a memory 227b, and a CPU 227c. Then, the analog image signal of the component 218 output from the component recognition camera 216 is converted into a digital signal by the A/D converter 227a and stored in the memory 227b, and the CPU 227c recognizes the sucked component based on the image data. That is, the image recognition device 227 calculates the component center and the suction angle, and recognizes the suction posture of the component.

Furthermore, the image recognition device 227 processes the image of the board mark captured by the board recognition camera 217 to calculate the position of the board mark.

Furthermore, the image recognition device 227 processes the image data and the substrate marking data captured by the substrate recognition camera 217 , and sends correction data for both to the control unit 220 .

The keyboard 228 and the mouse 229 are used to input data such as parts data.

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

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

In practice, at the stage of starting board production and mounting components on the circuit board, the board correction data (Δx, Δy, Δ θ) is stored in the storage device 230.

Then, the components supplied from the component supply device 211 are sucked by the suction nozzle 213a, the suction head 213 is moved to the upper part of the component recognition camera 216, and the components are photographed by the same camera. The captured image of the component is subjected to image processing in the image recognition device 227 , and the correction data is sent to the control unit 220 .

The control unit 220 reads the substrate correction data and the component data of the component from the storage device 230, and recognizes the mounting position and the inclination angle of the component based on the component data and the transmitted component center calculated by the image recognition device 227 and the component inclination angle. Snap pose.

Then, when the deviation in the horizontal direction between the component center and the suction center of the component mounting position and the angular deviation in the component direction are detected, by driving the X-axis motor 221, the Y-axis motor 222, and the θ-axis motor 224, These horizontal misalignments and angular misalignments are corrected so that components can be mounted at predetermined circuit board positions with correct postures (reference angles).

In the electronic component mounting apparatus as described above, for example, Patent Document 1 proposes a technique for reducing the amount of power consumption by appropriately controlling the power supply on and off.

Specifically, as shown in FIG. 8 (corresponding to FIG. 1 of Patent Document 1), this technology drives the component supply drive units 107A and 107B that drive the component supply devices 101A and 101B, and drives the component transfer device 102. The component transfer drive device 108 and the substrate positioning drive device 109 for driving the substrate positioning device 103 can connect and disconnect the power supply for power and the power supply for control according to commands from the control device 104, respectively.

In this way, when the control device 104 detects that the conditions for each of the components of the component mounting apparatus 100 to stop are generated, the control device 104 can cut off the power supply for power supplied to the drive device that is stopped. As a result, the component mounting apparatus 100 can continue the production operation with the minimum required power without consuming a large amount of power.

Patent Document 1: Japanese Patent Laying-Open No. 2000-332500 (Fig. 1)

Contents of the invention

Here, the electric tape feeder used as a component supply device requires a large amount of electric power to drive it, but in the component mounting device 100 shown in Patent Document 1, as described above, it is possible to use The power supplied by the component supply device used is cut off, and the production operation can be continued with the minimum required power without consuming a large amount of power.

However, in a general component mounting apparatus, before starting component mounting, it is necessary to perform positioning of the origin of the component pick-up position of the electric tape feeder to be mounted. Since this origin position positioning operation is performed simultaneously for all the electric tape feeders mounted on the component mounting device, for example, when the power of the component mounting device is turned on, the maximum power required by the component mounting device is This is relatively large compared to the power required to simultaneously drive all the electric tape feeders mounted on the component mounting apparatus. Therefore, it is necessary to increase the capacity of the power supply prepared for the component mounting apparatus, thereby increasing the cost.

An object of the present invention is to reduce the maximum power required by a component mounting device when positioning the origin of a component pickup position for a plurality of electric component supply devices.

The control method of the electric component supply device according to the present invention which solves the above-mentioned problems is characterized in that a plurality of electric component supply devices respectively mounted in a plurality of slots of the component mounting The range in which the mounting device supplies electric power to the electric component supply device is divided into a plurality of groups, and for each divided group, the order of the electric component supply device for positioning the origin position is determined, and for the plurality of groups, the origin position is simultaneously performed. Position positioning, wherein the origin position positioning is an origin position positioning of a component pickup position of the electric component supply device performed before starting component mounting.

The number of the groups is preferably the same as the number of components that the component mounting device can simultaneously absorb.

The effect of the invention

According to the present invention, since the electric component supply devices mounted in the slots are divided into a plurality of groups within the range of electric power that can be supplied from the component mounting devices to the electric component supply devices, for each divided group, it is determined The sequence of the electric component supply device for positioning the origin position simultaneously performs the origin position positioning for the plurality of groups, so even if the number of electric component supply devices to be mounted increases, the maximum power required by the component mounting device can be controlled within Within the range of available electric power, the maximum power required by the component mounting device can be reduced compared to the prior art in which all the electric component supply devices mounted in the slots are positioned at the same time.

Accordingly, the increase in size of the power supply prepared for the component mounting device can be suppressed, and the cost can be reduced.

In particular, when the number of the groups is the same as the number of components that the component mounting device can pick up at the same time, the electric power required for positioning the origin position of the electric component supply device is equal to the number of components that the component mounting device can simultaneously hold. The power required for mounting the maximum number of components on the substrate does not increase compared with that of the suction, and the maximum power required for the component mounting device does not increase due to the positioning of the origin position of the electric component supply device. big. In addition, when the number of groups is the same as the number of components that the component mounting device can simultaneously absorb, it is possible to increase the maximum power required by the component mounting device for positioning the origin position of the electric component supplying device. In a wide range, the time from the start to the end of the positioning of the origin position of the electric parts supply device is minimized.

Description of drawings

FIG. 1 is a control block diagram of a component mounting device that implements the method according to this embodiment.

Fig. 2 is a table showing an example of the results of the recognition of the installation status of the tape feeder by the control unit.

Fig. 3 is a table showing the results of the procedure for determining the origin position positioning of the attached tape feeder.

Fig. 4 is a timing chart when the tape feeder performs origin position positioning according to the procedure described above.

Fig. 5 is a flowchart showing the operation procedure of positioning the origin position of the mounted tape feeder.

Fig. 6 is a schematic diagram of an electronic component mounting device.

FIG. 7 is a diagram showing the configuration of a control system of the electronic component mounting apparatus.

FIG. 8 is a schematic system diagram showing a conventional control system for reducing power consumption ( FIG. 1 of Patent Document 1).

Detailed ways

Next, the control method according to the embodiment of the present invention will be specifically described with reference to the drawings.

In FIG. 1, the component mounting device 10 has: a plurality of slots S, which are insertion ports for installing an electric tape feeder F (hereinafter referred to as tape feeder F); The tape feeder F in the slot S is controlled by communication; Here, the number of slots S included in the component mounting apparatus 10 is thirty.

In addition, the component mounting apparatus 10 has six suction nozzles (not shown), and the maximum number of components that can be simultaneously suctioned is six. Thereby, the component mounting apparatus 10 is connected to the power supply which can supply at least the electric power required for operating six tape feeders F simultaneously.

The slots S are insertion openings provided in the component mounting apparatus 10 for mounting the tape feeder F, and each has an identification code (hereinafter referred to as ID). The number of slots S included in the component mounting apparatus 10 shown in FIG. 1 is 30, and the IDs assigned to the respective slots S are 1-30.

When all the tape feeders F inserted and mounted in the slot S30 are turned on, when the power of the component mounting apparatus 10 is turned on, the control power is also turned on, and the ID of the slot S to which it is mounted is obtained. Then, the tape feeder F notifies the control unit 12 of the ID of the slot S attached to itself via the communication path 14 . At this time, the tape feeder F also notifies the control unit 12 of such information that the tape feeder itself is a feeder of several mm. Thus, the control unit 12 recognizes whether or not a tape feeder F is mounted for each slot S to which an ID is assigned, and if mounted, the mounted tape feeder F is a feeder of how many mm. Case.

The feeding pitch of the tape feeder F is classified into 8 mm, 16 mm, 24 mm, 56 mm, etc. according to the type. Since the feeding length of the supply belt for positioning the origin position is at most the length of the feed pitch, the longer the feed pitch, the longer the time required for positioning the origin position.

Fig. 2 shows the result of identifying whether the tape feeder F is installed by the control unit 12 for each slot S with an ID of 1 to 30, and how many millimeters of feeding the installed tape feeder F is. one example.

The control part 12 determines the order of the tape feeder F which performs origin position positioning after performing identification as shown in FIG. The order is determined by arranging the identified tape feeders F in descending order of the feed pitch length. The IDs of the slots S are arranged in ascending order. FIG. 3 shows the result of determining the order of origin position positioning in this way.

Moreover, the control part 12 creates the timing chart for performing the origin position positioning of the attached tape feeder F based on the determination result, after determining the order of origin position positioning.

Here, the maximum number of components that can be simultaneously sucked by the component mounting device 10 is six, and the component mounting device 10 is connected to the following power supply that can supply at least the power required to simultaneously operate six tape feeders F . Therefore, if the number of feeders F that perform origin position positioning at the same time is limited to 6 and the origin position positioning is performed sequentially so that all installed tape feeders F perform origin position positioning, there will be no need for tape feeders F. The origin position positioning increases the maximum power required by the component mounting device 10 . Therefore, the number of tape feeders F that simultaneously perform positioning of the origin position is limited to six, and a timing chart for sequentially positioning the position of the origin is created.

Therefore, it is necessary to divide the tape feeders F mounted on the component mounting apparatus 10 into six groups (here, groups 1 to 6). This grouping is performed by assigning the tape feeder F to any one of the groups 1 to 6 in the order of origin position positioning in FIG. 3 . In this grouping, the allocation is performed so that the maximum time required for positioning the origin position is as even as possible in the groups 1 to 6 . Specifically, when assigning a certain tape feeder F to any one of the groups 1 to 6, the tape feeder F is assigned to one of the groups 1 to 6 in which the tape feeder F is assigned. Time is in the group that requires the least maximum time to locate the origin position. If there are groups with the same assigned maximum required time, it is assigned to the group with the smaller group number.

In this way, when the tape feeders F mounted on the component mounting apparatus 10 are allocated to groups 1 to 6, a timing chart as shown in FIG. 4 is obtained. In FIG. 4 , the maximum time required for a certain tape feeder F to locate the origin position is represented by the length of the high-level line portion corresponding to the tape feeder F. The number marked below the high horizontal line part is the ID of the slot S to which the tape feeder F is mounted. For example, the maximum time required for positioning the origin position of the tape feeder F attached to the slot S of ID11 is represented by length _L11 in FIG. 4 .

Next, how to perform the origin position positioning of each tape feeder F is demonstrated using the flowchart shown in FIG. 5 based on the method concerning this embodiment.

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

Thereby, the control part 12 recognizes whether or not the tape feeder F is attached to each slot S whose ID is 1-30, and whether the attached tape feeder F is a feeder of mm feed (step S4).

Then, an origin position positioning button (not shown) of the component mounting apparatus 10 is pressed, and origin position positioning starts for each mounted tape feeder F (step S5).

When the tape feeder F locates the origin position, first, the control unit 12 of the component mounting device 10 checks the maximum number of components that can be sucked simultaneously (step S6). Here, the maximum number of components that the component mounting apparatus 10 can simultaneously absorb is six.

Then, the confirmed tape feeders F are arranged in descending order of the feed pitch length. If there are tape feeders F with the same feed pitch length, the The IDs of the slots S are arranged in ascending order, and as shown in FIG. 3 , the order of origin position positioning of each identified tape feeder F is set (step S7 ).

And each tape feeder F is allocated to the groups 1-6 in order of the origin position positioning of each tape feeder F set in step S7. At this time, as described above, the allocated tape feeders F are allocated in consideration of the time required for positioning the origin position. Averaging as much as possible, a timing diagram as shown in FIG. 4 is obtained (step S8).

Then, according to the timing chart obtained in step S8, the origin positions are simultaneously positioned for groups 1 to 6 (step S9). At this time, an instruction to perform origin position positioning is issued from the control unit 12 to the tape feeder F via the communication path 14 . The tape feeder F having completed the positioning of the origin position notifies the control unit 12 of the completion of the positioning of the origin position via the communication path 14 . The control part 12 which received this notification instructs the following tape feeder F to perform origin position positioning according to the timing chart obtained in step S8. In this way, the origin position positioning of all the identified tape feeders F is performed according to the timing chart obtained in step S8.

The control unit 12 judges whether all the identified tape feeders F have completed the origin position positioning (step S10 ), and if all the tape feeders F have completed the origin position positioning, the origin position positioning operation is completed.

As described above, by positioning the origin position of the tape feeder F mounted on the component mounting apparatus 10, the number of tape feeders F performing the origin position positioning is simultaneously limited to the same maximum number of components that can be sucked simultaneously. Therefore, the maximum power required by the component mounting apparatus 10 can always be smaller than the power required to drive the same number of tape feeders F as the maximum number of components that can be picked up simultaneously.

Furthermore, since the tape feeders F to be mounted in the component mounting apparatus 10 are allocated in such a manner that the number of sets is the same as the maximum number of components that can be sucked at the same time, in the timing chart obtained in step S8, the allocation is such that in Between each group, the maximum time required for the origin position positioning is as equal as possible, so the time required to complete the origin position positioning is not only a specific group that takes a long time, thus shortening until all the origin position positioning actions are completed time.

In the embodiment described above, the number of slots S in the component mounting device 10 is 30, and the maximum number of tape feeders F that can be mounted in the component mounting device 10 is 30. The number is greater than 30, and the number of tape feeders F mounted on the component mounting apparatus 10 is greater than 30. In this case, the number of tape feeders F that simultaneously perform origin position positioning may be limited to the maximum number of components that can be simultaneously sucked, so that the maximum power required by the component mounting device 10 can always be smaller than that of the corresponding one. Electric power required to drive the same number of tape feeders F as the maximum number of parts that can be sucked simultaneously.

In addition, in the embodiment described above, the maximum number of components that can be sucked by the component mounting device 10 at the same time is six, and the component mounting device 10 is connected to a power source that can supply at least six tape feeders F at the same time. connect. Here, with regard to the tape feeders F mounted on the component mounting device 10, the number of units that simultaneously perform the origin position positioning is limited to six units, and the origin position positioning is performed sequentially, but the number of units that simultaneously perform the origin position positioning may not be six. , which can be less than or equal to 5 or greater than or equal to 7.

However, when the number of simultaneous origin position positioning is 5 or less, all the tape feeders F mounted on the component mounting device 10 complete the origin compared to the case where the number of simultaneous origin position positioning is 6 units. Location positioning takes a long time. In addition, when the number of units simultaneously performing origin position positioning is 7 or more, the maximum power required for the component mounting device 10 becomes larger than the number of units simultaneously performing origin position positioning is 6 units. The origin position of the feeder F is positioned to increase the required maximum power of the component mounting device 10 , so the required power supply capacity for the component mounting device 10 increases.

Therefore, in the component mounting apparatus 10 in which the maximum number of components that can be sucked simultaneously is six, it is preferable that the number of units that simultaneously perform origin position positioning is six.

In addition, in the embodiment described above, the tape feeder F was used as the components supply device, but the usable components supply device is not limited to the tape feeder.

Claims (2)

1. A control method for an electric component supply device, characterized in that: A plurality of electric component supply devices respectively mounted in a plurality of slots of the component mounting device are divided into a plurality of groups within the range where power can be simultaneously supplied from the component mounting device to the electric component supply device, and for each division The group determines the order of the electric component supply device that performs origin position positioning, and performs origin position positioning simultaneously for the plurality of groups, wherein the origin position positioning is the electric component supply device that is performed before starting component mounting. The origin position positioning of the part picking position. 2. The control method of the electric parts supply device according to claim 1, wherein: The number of the groups is the same as the number of components that the component mounting device can simultaneously absorb.

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