JP2009130115A - Component supply device and electronic component mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To separate and connect a component supply device and suppress chattering and a surge current in separation and connection while an electronic component mounting device is being powered with a smaller number of necessary circuits. <P>SOLUTION: A bank address setting means 56 allocates different bank addresses to the respective component supply devices in connection. A power source charge control circuit 57 simultaneously outputs a power source charge signal which is organized as serial data, and includes a bank address indicating selection of the one component supply device as a subject, to all the component supply devices in connection. A mounting determination circuit 20 of the component supply device 10 allocated with the selected bank address by the bank address setting means outputs a power source ON signal PON when it is determined that the power source charge signal is input, and a power source of a power source circuit 25 is charged to start power supply to a control circuit 21, a motor drive circuit 22, and a motor 24. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic component mounting apparatus that sequentially picks up components and mounts them on an electronic circuit board. The present invention relates to a component supply device to be supplied. In particular, the component supply device can be separated and connected while the power is supplied to the electronic component mounting device while suppressing necessary circuits, and at the time of the separation and connection. The present invention relates to a component supply apparatus and an electronic component mounting apparatus that can suppress chattering and surge current and can appropriately turn on the power of the component supply apparatus after connection.

  In the electronic component mounting apparatus, the components supplied from the component supply apparatus including a plurality of tape reels that provide the components housed in the tape wound on the reels for each type are sequentially sucked and mounted on the electronic circuit board. . In addition, the electronic component mounting apparatus can be replaced because the component supply apparatus can be individually separated and connected to the electronic component mounting apparatus main body.

  Conventionally, a mechanical part supply device using air and a solenoid valve for driving is often used. Recently, in order to accurately attract components to be reduced in size, an electric component supply apparatus using a system in which components are fed by a motor has begun to be used.

  About 100 electric component supply apparatuses are mounted and used for one electronic component mounting apparatus. The driving power is generally supplied from an electronic component mounting apparatus. The electric component supply apparatus frequently performs the loading / unloading operation on the electronic component mounting apparatus in order to perform a tape replacement operation in the event that a component shortage occurs during production. In general, the electric component supply device is connected to the electronic component mounting device with a cable by a connector, supplies power, and transmits / receives a signal for interlocking operation.

  Here, when mounting / removing the electrical component supply device, a surge current flows due to chattering or the like, which adversely affects other electrical component supply devices mounted on the electronic component mounting device. There is a problem of end. As a countermeasure, in Patent Document 1, when the electric component supply device is mounted / removed, a minute current flowing from the electronic component mounting device to the electric component supply device is monitored in the component supply device, and the supply of drive power is controlled. Yes.

Japanese Patent No. 3851855 (FIG. 4)

  However, in Patent Document 1, in order to notify the electronic component mounting apparatus that the component supply device has detected a minute current, a dedicated signal line must be provided in a connector provided for each of the electronic component supply devices to be connected.

  Moreover, in order to control the drive power supplied to the component supply device for each component supply device, the electronic component mounting device needs to include the power supply control unit 57 shown in FIG. 4 of Patent Document 1 for each component supply device. In other words, the power supply control unit 57 must prepare for the total number of component supply devices that can be attached to the electronic component mounting apparatus.

  Generally, there are about 100 component supply devices attached to the mounting machine, so there is a problem that about 100 power supply control units 57 are required, and wiring in the cable due to the addition of a minute current detection signal. Therefore, there is a problem in terms of wiring saving and size reduction of the electronic component mounting apparatus, and in terms of reliability and cost reduction. Furthermore, in patent document 1, since the lock lever of a component supply apparatus is used as a switch for power supply, there is a possibility that a mechanical failure may occur.

  The present invention has been made to solve the above-mentioned conventional problems, and enables the separation and connection of the component supply device while the power is supplied to the electronic component mounting device while suppressing the number of necessary circuits. It is an object of the present invention to suppress chattering and surge current during the separation and connection, and to appropriately turn on the power of the component supply device after the connection.

  The present invention relates to an electronic component mounting apparatus that sequentially picks up components and mounts them on an electronic circuit board. In the component supply device to be supplied, the bank address included in the bank polling signal or power-on signal organized as serial data, which is input from the electronic component mounting device, is converted into parallel data and connected to an address counter for output. An address comparison circuit that reads from a bank address that is assigned to each electronic component mounting apparatus and is input as parallel data, and that is different for each component supply apparatus, compares it with the bank address output by the address counter, and determines whether or not they match. And a power-on counter that determines whether a bank polling signal or a power-on signal is input. The address counter, the address comparison circuit, and the power-on counter are operated by the power supplied from the connected electronic component mounting apparatus, and the address comparison circuit determines that they match, And, after the power-on counter determines that the bank polling signal is input, when the power-on counter determines the input of the power-on signal, the power-on signal is output. The problem is solved by starting at least part of the power supply in the supply device.

  The power-on counter holds the power-on signal until the reset signal is input after outputting the power-on signal, and the reset signal is obtained by operating any switch on the operation panel. The power supply can be cut off by inputting to the power-on counter and releasing the hold.

  Further, the present invention is an electronic component mounting apparatus that connects the above-described component supply apparatuses, that is, a plurality of component supply apparatuses that are separable and connectable and that can be replaced are connected at the same time. In an electronic component mounting device that sequentially picks up the components supplied from the device and mounts them on the electronic circuit board, a different bank address is assigned to each connected component supply device and the bank address is output. A bank polling signal organized as serial data including a setting means and a bank address indicating selection of one target component supply device is simultaneously output to all connected component supply devices, thereby When the component supply apparatus to which the selected bank address is assigned by the bank address setting means determines that the bank polling signal is input. A power-on control circuit that simultaneously outputs a power-on signal organized as serial data including the selected bank address to all connected component supply devices. In the component mounting apparatus main body, the component supply apparatus to which the selected bank address is assigned by the bank address setting means is configured to turn on the power when it is determined that the power-on signal is input. It solves the problem.

  According to the present invention, since the power supply to the electric component supply device is sequentially performed from the first bank address to the last bank address, the electric power supplied from the mounting machine when the power is turned on is the electric component supply. There is no increase or decrease depending on the number of installed devices. In addition, even if the electric component supply device is installed or removed during production, the electric component adsorption device can be detected and powered on by polling operation. Peak power, and a large inrush current does not flow.

  Further, the electric component supply device mounted on the bank outputs a bank address corresponding to the bank number and a limited signal using the communication signal line. For example, in the embodiment described later, the bank address setting means 56 uses the bank In addition to the address, it is possible to operate with the two signal lines of the counter enable signal CNT and the coincidence signal EQR common to all the electric component supply devices mounted in the bank, so that the wiring saving can be realized.

  Furthermore, it is not necessary to use the mounting lever of the electric component supply device as a switch for supplying power, and problems due to mechanical failure can be prevented.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of an electronic component mounting apparatus 50 according to an embodiment to which the present invention is applied as viewed from above, and FIG. 2 is an enlarged view of the II part.

  In this figure, components are sucked and mounted on an electronic circuit board 1 by a nozzle (not shown) attached to the mounting head 53. Further, the electronic circuit board 1 is carried in and out in the left-right direction in the figure by a board conveyance positioning portion 69 provided with a conveyance rail 68, and is positioned at a fixed position in the above mounting.

  Two component supply devices 10 are arranged at positions facing each other via the transport rail 68. These component supply apparatuses 10 are separable and connectable to the electronic component mounting apparatus main body 51, and are replaceable.

  The mounting head 53 is attached to the X-axis positioning unit 55, and can be reciprocated in the direction indicated by the arrow X in the figure (X-axis movement) and can be positioned by the X-axis positioning unit 55. Further, the X-axis positioning portion 55 is attached to a nut passed through the ball screw 62 and a nut passed through the ball screw 63. Therefore, the mounting head 53 attached to the X-axis positioning unit 55 rotates the ball screw 62 by the servo motor 65 and rotates the ball screw 63 by the servo motor 66, thereby moving in the direction indicated by the arrow Y in the figure. It can reciprocate (Y-axis movement) and can be positioned.

  As described above, the X-axis movement and the Y-axis movement are appropriately performed, and the nozzle is moved up and down as appropriate in the mounting head 53 (Z-axis movement), and the components are sucked and mounted on the electronic circuit board 1. Further, the technique of Patent Document 1 is applied, and the component supply apparatus 10 can be separated and connected to the electronic component mounting apparatus main body 51 even during such mounting work.

  In the figure, reference numeral 52 is a reference point of the electronic component mounting apparatus main body 51. A position in a program for performing a component mounting operation in the electronic component mounting apparatus 50, such as a component suction position 13 to be described later, is indicated with the reference point 52 as a reference.

  FIG. 3 is a side view of the electric drive type component supply apparatus 10 according to the present embodiment.

  First, the electric drive type component supply device 10 shown in FIG. 3 includes a component supply unit 11 that sequentially supplies components as the components are supplied, and a component supply drive motor 15 as a drive power unit for the supply operation.

  Further, by connecting the plug 18 at the tip of the connection cable 16 included in the component supply apparatus 10 to a connector / receptacle 72 provided in the electronic component mounting apparatus main body 51, signal lines and power lines included in the connection cable 16 can be connected. Connector is connected. Thereby, at the time of connection, the operation of sequentially feeding out the components on the component supply device 10 side can be linked to the operation of the electronic component mounting apparatus main body 51.

  The component supply unit 11 operates the component supply drive motor 15 in accordance with a signal from the electronic component mounting apparatus main body 51 and corresponds to the tape reel 12 that supplies components in units of components arranged in parallel in the depth direction in the figure. The components are supplied one by one to the electronic component mounting apparatus main body 51 side. In this conventional example, the drive power unit that is the power for supplying components is the component supply drive motor 15 and is therefore referred to as an electric drive system.

  Note that the component supply device 10 is mounted on, for example, an exchange carriage 13 having a plurality of wheels 14 for convenience of connection work, separation work, and movement work after the separation with respect to the electronic component mounting apparatus main body 51. ing.

  Next, FIG. 4 is a circuit diagram of a main part to which the present invention is applied in the electronic component mounting apparatus main body 51 and the component supply apparatus 10 in the present embodiment.

  In the present embodiment, the electronic component mounting apparatus main body 51 according to the present invention includes a bank address setting unit 56 and a power-on control circuit 57. The main body control circuit 58 performs various controls of the electronic component mounting apparatus main body 51.

  Further, the component supply apparatus 10 includes a mounting determination circuit 20 according to the present invention. In the component supply apparatus 10, the power-on control target to which the present invention is applied is the power circuit 25, and the power-on control from the power circuit 25 to the control circuit 21, the motor drive circuit 22, the motor 24, and the like. In the present invention, the present invention is applied.

  Here, FIG. 5 is a pin array diagram of the connector receptacle 72 and the plug 18 of the present embodiment.

  As shown in this figure, the connector / receptacle 72 provided on the electronic component mounting apparatus main body 51 side and the plug 18 provided at the tip of the connection cable 16 are composed of a total of 14 pins or sockets having pin numbers 1-14. It has a configuration. By engaging the plug 18 with the connector receptacle 72, one pin is inserted into the other socket of the same number and is electrically connected.

  Pin numbers 1 and 2 are a power supply VIN, and pin numbers 13 and 14 are a ground GND. Power is supplied from the electronic component mounting apparatus main body 51 to the component supply apparatus 10 through these pins and sockets.

  Pin number 3 is a match signal EQR, pin number 4 is a counter enable signal CNT, and pin number 5 is a communication signal SGN. Pin number 6 is NC and is not used. A total of six pins from pin number 7 to pin number 12 are bank address signals, and a 6-bit binary bank address is transmitted through six signal lines.

  Here, in the electronic component mounting apparatus main body 51, a plurality of connectors / receptacles 72 are provided as many as the number of connectors / receptacles 72 that can be connected to the electronic component mounting apparatus main body 51. The bank address setting means 56 assigns different bank addresses to the individual component supply apparatuses 10 that are connected. The bank address is a 6-bit binary, and is transmitted to the component supply apparatus 10 through the connection cable 16 as described above.

  Specifically, in the connector / receptacle 72 or the plug 18, the pin number 7 to the pin number 12 are assigned in this order from the LSB (Least Significant Bit) to the MSB (Most Significant Bit) of the bank address. If the corresponding bit of the bank address is “0”, the socket of the corresponding pin number in the connector receptacle 72 is electrically connected to the ground GND. Alternatively, if “1”, the socket of the corresponding pin number in the connector receptacle 72 is connected to the power source VIN. The same number pins of the plug 18 are inserted into these sockets of the connector receptacle 72 and are electrically connected.

  In the present embodiment, the bank address setting means 56 sets a bank address by such an electrical connection to the ground GND or the power supply VIN, and can have a relatively simple configuration. However, the bank address setting means 56 is not limited to this. For example, it may be in a form that can be set by a software program.

  Next, the power-on control circuit 57 outputs the counter enable signal CNT and the communication signal SGN while appropriately checking the coincidence output signal EQR from the component supply apparatus 10 side.

  Here, the counter enable signal CNT is the same signal in all the connector receptacles 72 in the electronic component mounting apparatus main body 51. Similarly, the communication signal SGN is the same signal in all connector receptacles 72.

  Further, the coincidence output signal EQR output from each appropriate component supply device 10 side and input via each connection cable 16 is processed into one signal by the OR circuit in the power-on control circuit 57. Is done. This OR circuit may be a wired OR circuit.

  Next, in the component supply apparatus 10, the mounting determination circuit 20 is directly supplied with power from the electronic component mounting apparatus main body 51 through the connection cable 16 because the power is applied to which the present invention is applied. On the other hand, the control circuit 21, the motor drive circuit 22, and the motor 24 are supplied with power from the power supply circuit 25 to be turned on.

  Next, FIG. 6 is a circuit diagram showing a configuration of the mounting determination circuit 20 of the present embodiment.

  As shown in this figure, the mounting determination circuit 20 includes an address counter 27, a power-on counter 28, an address comparison circuit 29, and AND circuits 32 to 34.

  Next, FIG. 7 is a bit configuration diagram of the bank polling signal in the present embodiment. FIG. 8 is a bit configuration diagram of the power-on signal in the present embodiment.

  In the present embodiment, when the counter enable signal CNT output from the power-on control circuit 57 is in the H state, a bank polling signal or a power-on signal is transmitted as serial data by the communication signal SGN.

  When the counter enable signal CNT is in the L state, the communication signal SGN is a so-called CAN (Controller Area Network) serial signal, and is a signal for controlling the component supply operation of the component supply apparatus 10.

  Here, the bank polling signal is serial data as shown in FIG. 7, the first bit is “0”, and the following 6 bits convey the bank address indicating the component supply device 10 to be polled. Is done. The address counter 27 converts the bank address included in the bank polling signal from serial data to parallel data.

  Alternatively, the power-on signal is serial data as shown in FIG. 8, the first bit is “1”, and the bank address indicating the power-on target component supply apparatus 10 is transmitted by the following 6 bits. The The address counter 27 converts the bank address included in the power-on signal from serial data to parallel data.

  FIG. 9 is a flowchart showing the main body side power-on control process performed in the present embodiment.

  Hereinafter, the operation of the present embodiment will be described based on the flowchart.

  In a general electronic component mounting apparatus 50, the control device of the electric component supply apparatus 10 is incorporated on the electronic component mounting apparatus main body 51 side. The control device communicates movement data such as offset of the component suction position, control data such as motor profile data, and maintenance data to the component supply device 10 using the communication signal SGN. The supply device 10 is controlled. Since the component suction position and the like slightly differ depending on the component supply device 10, it is transmitted as an offset.

  In addition, since such communication is not frequently transmitted and received, the power-on control circuit 57 uses the communication signal SGN to turn on the power-on to which the present invention is applied while the communication is not performed. Take control.

  First, in step S110, the power-on control circuit 57 performs various initial settings for power-on control. For example, “1” is set to the bank address as the initial bank address. The bank address is, for example, 6-bit binary data “000001b” to “101000b” from “1” to “40” in decimal.

  Next, in step S112, the counter enable signal CNT is set to the H state. Subsequently, in step S114, the bank polling signal of the bank address “000001b” shown in FIG. 7 is transmitted to the mounting determination circuit 20 of the connected component supply apparatus 10 by the communication signal SGN of all the connector receptacles 72. Then, the address counter 27 of the mounting determination circuit 20 of each component supply apparatus 10 converts the bank address included in the bank polling signal into parallel data, and after the bank address is determined, the converted bank address is compared with the address. Output to the circuit 29. The address comparison circuit 29 compares the bank address output from the address counter 27 and the bank address set by the bank address setting means 56. If they match, the address comparison circuit 29 outputs a match signal EQR in the L state (negative logic). Simultaneously with output to the power-on control circuit 57, one input terminal of the AND circuit 33 is set to the H state.

  The coincidence signal EQR is negative logic, the L state is “true”, and the H state is “false”. The AND circuit 34 that outputs the coincidence signal EQR is an open collector output, and the coincidence signal EQR output from the mounting determination circuit 20 of each component supply device 10 is supplied from the connector / receptacle 72 to the power-on control circuit. After being input to 57, they are wired OR connected to each other.

  In step S116, when the power-on control circuit 57 recognizes the input of the L state (true) coincidence signal EQR from the mounting determination circuit 20 of any of the component supply devices 10, the bank address of the bank polling signal output this time It is recognized that the component supply device 10 is connected to the connector / receptacle 72, and in step S134, in order to instruct power-on of the connected component supply device 10, a power-on signal is sent to any of the component supply devices 10. Is also output in response to a communication signal SGN. The power-on signal is serial data and includes a bank address having the same address as the bank polling signal transmitted this time.

  When the mounting determination circuit 20 receives the power-on signal, the output of the AND circuit 33 is in the H state, so that a power-on bit and a bank address are set in the power-on counter 28.

  The power-on counter 28 is in the L state (when the reset signal is in the H state, the output of the AND circuit 33 is in the H state, and the power-on bit of the first bit of the power-on signal received this time is “1”). (Negative logic) is output and held. In addition, if the output is H state (negative logic) at that time, the power-on counter 28 holds this. Further, when the reset signal becomes the L state, the output of the power-on counter 28 becomes the H state (negative logic).

  Therefore, when the power-on signal with the power-on bit of the first bit being “1” is received and the bank address setting means 56 determines that the bank address matches, and the output of the AND circuit 33 is in the H state. The power-on counter 28 outputs an L-state (negative logic) power-on signal PON to the power circuit 25, whereby power is supplied from the power circuit 25 to the control circuit 21, the motor drive circuit 22, and the motor 24. Is done. At this time, the L state is output from the AND circuit 32, and thereafter, the operation of the address counter 27 is stopped, the AND circuit 33 outputs the L state, and the AND circuit 34 outputs the coincidence signal of the H state. The EQR is output.

  In step S136, when the power-on control circuit 57 determines that the coincidence signal EQR is in the H state, the process proceeds to step S120. In step S120, it is determined whether or not it is necessary to transfer various data related to the connected component supply apparatuses 10.

  If it is determined that it is necessary, in step S122, the power-on control circuit 57 resets the counter enable signal CNT to be in the L state. The power-on control circuit 57 prompts the main body control circuit 58 that performs the data transfer in the electronic component mounting apparatus main body 51 to perform the data transfer. Then, the main body control circuit 58 uses the communication signal SGN to transfer various data related to the corresponding component supply apparatus 10 by CAN.

  In step S124, the power-on control circuit 57 determines whether the main body control circuit 58 has completed the data transfer process. If it is determined that the process has been completed, it is determined in step S126 whether the power-on process has been performed up to the final bank address. If it is determined that it is not yet the final bank address, in step S128, the power-on control circuit 57 increments (increases the value by “1”) the bank address on which power-on processing is performed.

  In step S134, even when the power-on signal is transmitted, even when the coincidence signal EQR does not become the H state, the power-on control circuit 57 transmits the power-on signal again. In this case, the process proceeds from step S136 to step S138. If it is determined in step S138 that the coincidence signal EQR does not enter the H state even if transmitted twice or more, warning processing such as an error (step S140) Display on the operation screen).

  Here, in the present embodiment, the mounting determination circuit 20 is designed by a logic circuit made of CMOS or the like, and the current consumption is very small and is about several tens of mA. Therefore, the influence of the inrush current that flows when the electric component supply device is mounted can be ignored.

  Further, when the component supply device 10 is separated from the electronic component mounting apparatus main body 51, an operation switch button provided on an operation panel or the like of the component supply device 10 is pressed to input to the power-on counter 28 of the mounting determination circuit 20. The reset signal RST is in the L state, the power on signal PON is in the L state, the power supply from the power circuit 25 is cut off, and the power supply to the control circuit 21, the motor drive circuit 22, and the motor 24 is cut off. . Thereby, the component supply apparatus 10 can be safely removed from the electronic component mounting apparatus main body 51.

The top view seen from the upper part of the electronic component mounting apparatus of embodiment with which this invention was applied Part II enlarged view in Fig. 1 above Side view of the electric drive type component supply device in the above embodiment The circuit diagram of the principal part to which this invention is applied in the electronic component mounting apparatus main body and component supply apparatus in the said embodiment. Pin arrangement of connector, receptacle and plug of the embodiment The circuit diagram which shows the structure of the mounting | wearing determination circuit of the said embodiment. Bit configuration diagram of bank polling signal in the embodiment Bit configuration diagram of power-on signal in the embodiment The flowchart which shows the main body side power-on control processing performed in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic circuit board 10 ... Component supply apparatus 11 ... Component supply part 12 ... Tape reel 13 ... Replacement carriage 14 ... Wheel 15 ... Component supply drive motor 16 ... Connection cable 18 ... Plug 20 ... Mounting determination circuit 21 ... Control circuit 22 ... Motor drive circuit 24 ... Motor 25 ... Power supply circuit 27 ... Address counter 28 ... Power-on counter 29 ... Address comparison circuit 32-34 ... AND circuit 56 ... Bank address setting means 57 ... Power-on control circuit 58 ... Main body control circuit 50 ... Electronic component mounting apparatus 51 ... Electronic component mounting apparatus main body 53 ... Mounting head 72 ... Connector / receptacle

Claims (3)

Component supply that supplies the suction components that are separable, separable, replaceable, and connectable to an electronic component mounting device that sequentially picks up the components and mounts them on the electronic circuit board. In the device
An address counter that converts the bank address included in the bank polling signal or power-on signal that is organized as serial data, which is input from the electronic component mounting apparatus, into parallel data, and outputs it,
Address comparison, which is assigned from the connected electronic component mounting apparatus and is input as parallel data, reads a different bank address for each component supply apparatus, compares it with the bank address output by the address counter, and determines whether or not they match Circuit,
A power-on counter that determines whether a bank polling signal or a power-on signal is input,
These address counter, address comparison circuit, and power-on counter operate with power supplied from the connected electronic component mounting apparatus,
In addition, when the address comparison circuit determines that they match and the power-on counter determines that the bank polling signal is input, the power-on counter determines that the power-on signal is input. A component supply apparatus which outputs a power-on signal and starts at least a part of power supply in the component supply apparatus by the output. In claim 1,
The power-on counter holds the power-on signal until the reset signal is input after outputting the power-on signal,
By operating an arbitrary switch on the operation panel, the reset signal is input to the power-on counter, and the holding is thereby released, whereby the power supply is cut off. . In an electronic component mounting apparatus in which a plurality of component supply devices that are separable and connectable are connected at the same time, and the components supplied from these component supply devices are sequentially sucked and mounted on an electronic circuit board. ,
Bank address setting means for allocating different bank addresses to the individual component supply devices being connected and outputting them,
A bank polling signal organized as serial data, including a bank address indicating the selection of one target component supply device, is simultaneously output to all connected component supply devices, whereby the selected bank address Is input as a coincidence signal that is output when the bank polling signal is input, this time, it is organized as serial data including the selected bank address. A power-on control circuit that simultaneously outputs a power-on signal to all connected component supply devices, and an electronic component mounting apparatus body,
An electronic component mounting apparatus, wherein the component supply apparatus to which the selected bank address is assigned by the bank address setting means turns on power when it is determined that the power-on signal is input.

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