JP2015076536A - Electronic component-mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic component-mounting device capable of rapidly executing irradiation control of a light source when an interlock state is cancelled and an electronic component mounting work is resumed.SOLUTION: An electronic component-mounting device comprises a main controller 21, an illumination unit 23, and a safety circuit 24. An illumination unit controller 26 and a constant current circuit 27 that configure the illumination unit 23, are individually connected with a DC power supply 29. Between the constant current circuit 27 and a DC power supply 29, a second cutoff switch 32 connected with a safety circuit 24 by a relay is provided. When an operator opens covers 3A and 3B or operates emergency stop switches 5A and 5B, power feeding to the constant current circuit 27 is blocked by the safety circuit 24 to stop the lighting of an LED 20a. On the other hand, because power feeding to the illumination unit controller 26 is continued, irradiation data from the main controller 21 read by the illumination unit controller 26 is not reset.

Description

  The present invention relates to an electronic component mounting apparatus for mounting an electronic component on a substrate via a photocurable adhesive.

  In the electronic component mounting field, a mounting line is widely used in which a plurality of mounting facilities for mounting electronic components such as ICs are mounted on a substrate via a photo-curable adhesive, and the entire system is controlled by a facility main controller. It has been. As mounting equipment, a pressure-bonding part that presses an electronic component mounted on a substrate and press-bonds it to the substrate, and an LED for accelerating curing of an adhesive interposed between the substrate and the electronic component when the electronic component is pressed There is an electronic component mounting apparatus that includes a light source for irradiating light and covers these with a housing.

  The light source is connected to a lighting unit including a current circuit and a control unit that controls the current circuit. The equipment controller transmits irradiation data including information on the illuminance and irradiation timing of the light source set individually according to the board type to be produced to the control unit, and controls to control the current circuit based on the irradiation data. To the department. A control part supplies a predetermined constant current to a light source by reading irradiation data and controlling a current circuit according to the command from an equipment main controller.

  Some LED lights contain a lot of ultraviolet rays harmful to the human body depending on the type. Therefore, when the operator opens the cover attached to the housing and accesses the work space during maintenance, it is necessary to stop the irradiation of the LED light from the viewpoint of protecting the operator. Also, when the operator senses an abnormal operation of the apparatus and operates an emergency stop switch provided in the apparatus, it is necessary to stop the irradiation of the LED light. Conventionally, as a technique for protecting the operator from light irradiated in the space inside the device partitioned from the outside world, a safety switch that detects the opening and closing of the cover is provided, and the power to the light source is detected when the opening of the cover is detected. A method of interrupting supply and applying an interlock has been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 5-288

  However, when the above prior art is applied to an irradiation unit provided in an electronic component mounting apparatus, the following problems have occurred. That is, when the opening of the cover is detected and the power supply to the irradiation unit is cut off, the irradiation parameters set in the irradiation unit are also reset at the same time. Therefore, when the interlock state is canceled and the power supply to the irradiation unit is resumed, the equipment controller needs to reset the irradiation parameters for the irradiation unit. During this time, the electronic component mounting apparatus cannot perform the electronic component mounting operation, resulting in a decrease in productivity.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic component mounting apparatus that can quickly execute light source irradiation control when an interlock state is released and an electronic component mounting operation is resumed.

  The present invention according to claim 1 is an electronic component mounting apparatus for mounting an electronic component on a substrate via a photo-curable adhesive, and presses the electronic component mounted on the substrate via the adhesive. A crimping tool that crimps the substrate, a substrate holding stage that holds the substrate, a plurality of drive units that actuate the crimping tool and the substrate holding stage, and the substrate and the substrate when the electronic component is pressed by the crimping tool. A light source for irradiating light for promoting the curing of the adhesive interposed between the electronic component and a housing covering the electronic component mounting device is attached to be openable and closable. Connected to an accessible cover, a cover open / close detector for detecting opening / closing of the cover, an emergency stop switch, the cover open / close detector and the emergency stop switch A safety circuit, a current circuit that supplies a predetermined current to the light source, a lighting unit that includes a lighting unit control unit that controls the current circuit, and a power supply unit that supplies power to an electronic component mounting apparatus, the safety circuit When the cover open / close detection unit detects the opening of the cover, or when it is detected that the emergency stop switch is operated, at least the power supply to the drive unit and the current circuit is cut off, and the lighting unit The power supply to the control unit is continued regardless of the opening of the cover or the operation of the emergency stop switch.

  According to the present invention, the safety circuit shuts off power supply to at least the drive unit and the current circuit when detecting the opening of the cover by the cover opening / closing detection unit or when detecting that the emergency stop switch is operated, Since the power supply to the lighting unit controller is continued regardless of the opening of the cover or the operation of the emergency stop switch, the light source irradiation control by the lighting unit control when the interlock state is released and the electronic component mounting work is resumed. Can be executed promptly.

The perspective view of the electronic component mounting apparatus in one embodiment of this invention The perspective view of this crimping | compression-bonding part which comprises the electronic component mounting apparatus in one embodiment of this invention The side view of this crimping | compression-bonding part which comprises the electronic component mounting machine in one embodiment of this invention The block diagram which shows the control system of the electronic component mounting apparatus 1 in one embodiment of this invention (A) (b) (c) The figure which shows the crimping | compression-bonding operation | movement of the electronic component in one embodiment of this invention

  First, an electronic component device according to an embodiment of the present invention will be described with reference to FIG. The electronic component mounting apparatus 1 has a function of mounting an electronic component on a substrate via a photo-curable adhesive, and an adhesive supply unit, a temporary pressure bonding unit, and a book are installed in an in-machine space inside the housing 2. The crimping portion is arranged in the substrate transport direction (X direction). The adhesive supply unit supplies the adhesive to the electronic component crimping position set at the edge of the substrate. The temporary pressure bonding portion mounts (temporary pressure bonding) an electronic component on a substrate supplied with an adhesive. The main crimping portion presses the electronic component mounted on the substrate, thereby crimping the electronic component to the substrate via the adhesive.

  A plurality of covers 3 </ b> A and 3 </ b> B having transparent windows are attached to the side surface in the longitudinal direction of the housing 2 and in front of the operator accessing the electronic component mounting apparatus 1 so as to be openable and closable. The operator opens the covers 3A and 3B and performs maintenance and inspection work such as repair and adjustment of each working unit in the housing 2 and replacement of consumable parts. During the electronic component mounting operation, the covers 3A and 3B are closed. The covers 3A and 3B are connected to cover switches 4A and 4B as opening / closing detection units (FIG. 4), and the opening and closing of the covers 3A and 3B is detected by the cover switches 4A and 4B.

  Emergency stop switches 5A and 5B are provided on both sides of the housing 2, respectively. The emergency stop switches 5A and 5B are operation switches for forcibly stopping the operation when the operator detects an abnormal operation of the electronic component mounting apparatus 1.

  Next, the main crimping part 6 will be described with reference to FIGS. The main crimping part 6 is configured by arranging a substrate positioning mechanism 8 and a crimping part 9 on a base 7. The substrate positioning mechanism 8 has a structure in which a substrate holding stage 11 is mounted on a substrate positioning table 10 in which an X-axis table 10X, a Y-axis table 10Y, and a Zθ-axis table 10Zθ are stacked. By driving the motor M1 provided in the X-axis table 10X, the Y-axis table 10Y moves in the X direction, and by driving the motor M2 provided in the Y-axis table 10Y, the Zθ-axis table 10Zθ moves in the X direction and the horizontal plane. It moves in the Y direction orthogonal to the inside. Further, by driving the motor M3 (for Z axis) and the motor M4 (for θ axis (FIG. 4)) built in the Zθ axis table 10Zθ, the substrate holding stage 11 is moved to the Z axis perpendicular to the XY plane. It moves up and down along and rotates around the Z axis.

  The substrate holding stage 11 holds a substrate 12 formed by laminating two transparent glass substrates. A substrate 12 in which a plurality of electronic components 14 are temporarily press-bonded to a plurality of edges 12a and 12b from which a lower-layer side glass substrate is exposed via an adhesive 13 (FIG. 5) is carried into the main crimping portion 6. . By driving the motors M1, M2, M3, and M4 of each table constituting the substrate positioning table 10, the substrate 12 on the substrate holding stage 11 can be positioned at a predetermined mounting work position.

  2 and 3, the crimping section 9 includes a plurality of crimping tools 16 that are individually driven up and down by a lifting and lowering pressing mechanism 40 including a motor M5 on a portal frame 15 that is erected on the base 7. The arrangement is arranged side by side in the X direction. The crimping tool 16 is attached to the lower end of the rod 18 that is the output shaft of the lifting and pressing mechanism 40. A block-shaped transmission member 17 extending in the X direction is disposed below the crimping tool 16 so as to face the crimping tool 16. By driving the motor M <b> 5, the lifting and pressing mechanism 40 is operated, and the crimping tool 16 is lifted and lowered via the rod 18 above the transmission member 17.

  The transmission member 17 is supported by a support base 19 extending in the X direction. The support base 19 is notched from the side surface toward the upper surface, and a part of the lower surface of the transmission member 17 is not supported by the support base 19 and is exposed. The transmission member 17 receives the edges 12 a and 12 b of the substrate 12 positioned at a predetermined crimping work position by the substrate positioning table 10.

  By lowering the crimping tool 16 against the substrate 12 received by the transmission member 17, the electronic component 14 can be pressed and crimped to the substrate 12. In other words, the crimping tool 16 presses the electronic component 14 mounted on the substrate 12 through the adhesive 13 and crimps the electronic component 14 to the substrate 12.

  2 and 3, a plurality of light irradiators 20 are disposed below the transmission member 17 at positions corresponding to the respective crimping tools 16. Each light irradiator 20 has a built-in LED 20 a (FIG. 4), and irradiates light from below toward the transmission member 17 when the electronic component 14 is pressed by the crimping tool 16. Thereby, the light from the light irradiator 20 enters the adhesive 13 bonded to the electronic component 14 to be crimped.

  The LED 20 a functions as a light source that emits light for promoting curing of the adhesive 13 interposed between the substrate 12 and the electronic component 14 when the electronic component 14 is pressed by the crimping tool 16. The light emitted from the LED 20a contains ultraviolet rays that are harmful to the human body. The window portions of the covers 3A and 3B are processed to cut off ultraviolet rays. When the covers 3A and 3B are closed with respect to the housing 2, the operator is not directly affected by the ultraviolet rays. On the other hand, when the covers 3A and 3B are opened, the operator may be exposed to ultraviolet rays by the light emitted by the LED 20a.

  Next, with reference to FIG. 4, the configuration of the control system of the electronic component mounting apparatus 1 centering on the main crimping part 6 will be described. The electronic component mounting apparatus 1 includes a main control unit 21, a drive unit 22, a lighting unit 23, and a safety circuit 24. The drive unit 22 is composed of a combination of a driver circuit 25 and a motor M1. Similarly, each of the motors M <b> 2 to M <b> 5 constitutes a drive unit 22 combined with the driver circuit 25.

  The main control unit 21 and the drive unit 22 are individually connected to a power source (“factory power source” 28) of a factory where the electronic component mounting apparatus 1 is installed. A first cutoff switch 31 is provided between the factory power supply 28 and the drive unit 22, and the power supply from the factory power supply 28 to the drive unit 22 is turned on by opening and closing the first cutoff switch 31. / OFF. The lighting unit 23 and the safety circuit 24 are individually connected to a DC power source 29 that converts alternating current supplied from the factory power source 28 into direct current.

  By opening and closing the main power switch 30 provided in the factory, the supply of power to the main control unit 21, the drive unit 22, and the DC power source 29 is turned ON / OFF. Accordingly, the power supply to the lighting unit 23 and the safety circuit 24 connected to the DC power source 29 is also turned on / off. As described above, the main power switch 30 and the DC power source 29 serve as power supply means for supplying power to the electronic component mounting apparatus 1.

  The main control unit 21 is connected to the driver circuit 25 and the illumination unit 23, respectively. The main control unit 21 controls the motors M1 to M4 to control the motor M5 to move the substrate holding stage 11 in a predetermined direction. The main control unit 21 controls the motor M5 to raise the crimping tool 16 at a predetermined timing. A control signal for lowering is transmitted to the corresponding driver circuit 25. The main control unit 21 transmits a control signal for controlling the light emission intensity, the light emission timing, and the like of the LED 20 a to the illumination unit 23.

  The driver circuit 25 supplies power to the motors M1 to M5 to be driven according to a control signal from the main control unit 21. The driver circuit 25 and the motors M <b> 1 to M <b> 4 are a plurality of drive units that operate the crimping tool 16 and the substrate holding stage 11.

  The illumination unit 23 includes an illumination unit control unit 26 and a constant current circuit 27, and controls the LED 20a based on a control signal transmitted from the main control unit 21. The illumination unit control unit 26 reads the irradiation data transmitted from the main control unit 21, and refers to the irradiation data according to the control signal from the main control unit 21, and the magnitude of the current output from the constant current circuit 27. To control. The constant current circuit 27 is connected to the LED 20a, and supplies the LED 20a with a constant current having a constant output current to cause the LED 20a to emit light. As described above, the illumination unit 23 includes a current circuit (constant current circuit 27) that supplies a predetermined current to the light source and the illumination unit controller 26 that controls the current circuit.

  The lighting unit controller 26 and the constant current circuit 27 are individually connected to a DC power source 29, and a second cutoff switch 32 is provided between the constant current circuit 27 and the DC power source 29. By opening and closing the second cutoff switch 32, the supply of electric power from the DC power source 29 to the constant current circuit 27 is turned ON / OFF. On the other hand, the supply of power to the lighting unit controller 26 is continued as long as the main power switch 30 is in the closed state.

  The safety circuit 24 forcibly stops the operation of some mechanisms constituting the electronic component mounting apparatus 1 under certain conditions, and is connected to the emergency stop switches 5A and 5B and the cover switches 4A and 4B. Yes. The safety circuit 24 is connected to the first cutoff switch 31 and the second cutoff switch 32 by a relay.

  The safety circuit 24 includes a first cutoff switch 31 and a second cutoff when the operator operates the emergency stop switches 5A and 5B or when the cover switches 4A and 4B detect that the covers 3A and 3B are opened by the operator. Switch 32 is opened. As a result, the electronic component mounting apparatus 1 enters an interlock state in which the power supply to the drive unit 22 and the constant current circuit 27 is interrupted, and the operation of the substrate holding stage 11 and the crimping tool 16 and the light emission of the LED 20a are stopped. On the other hand, since no cutoff switch is provided between the DC power supply 29 and the lighting unit control unit 26, the supply of power to the lighting unit control unit 26 is continued.

  That is, the safety circuit 24 detects at least the drive unit 22 when it detects that the covers 3A and 3B are opened by the cover open / close detector (cover switches 4A and 4B) or when the emergency stop switches 5A and 5B are operated. The power supply to the current circuit is interrupted, and the power supply to the lighting unit control unit 26 is continued regardless of the opening of the covers 3A and 3B or the operation of the emergency stop switches 5A and 5B.

  The electronic component mounting apparatus 1 according to the present invention has the above-described configuration. Next, the crimping operation of the electronic component 14 in the main crimping section 6 will be described with reference to FIG. Prior to the crimping operation, the main control unit 21 transmits irradiation data to the illumination unit control unit 26, and the illumination unit control unit 26 reads the received irradiation data.

  First, after the substrate 12 to which the electronic component 14 has been temporarily bonded is held by the substrate holding stage 11, the main control unit 21 positions the substrate 12 at a predetermined pressure working position (ST1: substrate positioning step). That is, as shown in FIG. 5A, the main control unit 21 uses the substrate positioning table 10 to bring the edge 12a of the substrate 12 into contact with the transmission member 17 so that the electronic component 14 is positioned below the crimping tool 16 (arrow). a).

  Next, as shown in FIG. 5B, the main control unit 21 lowers the crimping tool 16 (arrow b) and presses the electronic component 14 against the substrate 12 for a predetermined time (ST2: pressing step). Next, when the electronic component 14 is pressed, the main control unit 21 turns on the LED 20a and irradiates light from the light irradiator 20 (arrow c) (ST3: light irradiation step). The light emitted from the light irradiator 20 passes through the transmissive member 17 and the substrate 12 and reaches the adhesive 13. Thereby, the electronic component 14 is pressure-bonded to the substrate 12 while promoting the curing of the adhesive 13.

  If the electronic component 14 is pressed for a predetermined time, as shown in FIG. 5C, the main control unit 21 stops the light irradiation from the light irradiator 20, and then raises the crimping tool 16 (arrow). d) (ST4: Crimping tool raising step). Through the above steps, the electronic component 14 is mounted on the substrate 12 via the adhesive 13. The board 12 after mounting the electronic component is carried out from the main crimping section 6 to a downstream process. Further, the substrate 12 to be worked is newly carried into the main crimping section 6.

  In the process of continuously performing the electronic component mounting operation including the above-described crimping operation, in addition to the recovery operation from the so-called “choco stop” such as a board conveyance error and the replenishment / exchange operation of the consumable member, Maintenance work of the LED 20a and the like is appropriately performed. These operations are handled by the operator opening the covers 3A and 3B. That is, the covers 3A and 3B are attached to the casing 2 covering the electronic component mounting apparatus 1 so as to be openable and closable, and allow the operator to access the crimping tool 16 and the light source (LED 20a).

  When the operator opens the covers 3A and 3B to perform restoration work, replenishment / replacement work of consumable members, etc., the safety circuit 24 cuts off the power supply to the drive unit 22 and the constant current circuit 27. As a result, the electronic component mounting apparatus 1 is in an interlocked state, and the operation of the crimping tool 16 and the substrate holding stage 11 and the lighting of the LED 20a built in the light irradiator 20 are stopped. The operator can be protected from ultraviolet rays or the like contained in the light emitted from the LED 20a when it occurs.

  On the other hand, since the power supply to the illumination unit controller 26 is continued even when the electronic component mounting apparatus 1 is in the interlock state, the irradiation data read by the illumination unit controller 26 is not reset. Therefore, there is no need to transmit irradiation data from the main control unit 21 to the lighting unit control unit 26 and read irradiation data by the lighting unit control unit 26 again, so the interlock state is released and the electronic component mounting operation is resumed. In this case, it is possible to quickly perform irradiation control including turning on / off the LED 20a by the lighting unit control unit 26, and it is possible to prevent a decrease in productivity.

  The present invention is not limited to the embodiments described so far. For example, the electronic component mounting apparatus may have a configuration including only the main crimping portion, or may have a configuration in which a working unit other than the adhesive supply unit, the temporary crimping unit, and the main crimping unit is newly added. Further, the light source is not limited to the LED, and various light sources may be adopted.

  According to the present invention, when the interlock state is released and the electronic component mounting operation is resumed, the irradiation control of the light source can be quickly performed, and the electronic component is attached to the substrate via the photocurable adhesive. This is particularly useful in the field of electronic component mounting.

DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus 2 Case 3A, 3B Cover 4A, 4B Cover switch 5A, 5B Emergency stop switch 11 Substrate holding stage 12 Substrate 13 Adhesive 14 Electronic component 16 Crimping tool 20a LED
22 drive unit 23 illumination unit 24 safety circuit 25 driver circuit 26 illumination unit control unit 27 constant current circuit 29 DC power supply M1, M2, M3, M4, M5 motor

Claims (1)

An electronic component mounting apparatus that mounts an electronic component on a substrate via a photocurable adhesive,
A crimping tool for pressing an electronic component mounted on a substrate via the adhesive and crimping the electronic component to the substrate, a substrate holding stage for holding the substrate, and a plurality of drive units for operating the crimping tool and the substrate holding stage When,
A light source that emits light for promoting curing of the adhesive interposed between the substrate and the electronic component when the electronic component is pressed by the crimping tool;
A cover that is openably and closably attached to a housing that covers the electronic component mounting apparatus, and that allows an operator to access the crimping tool and the light source;
A cover open / close detector for detecting opening / closing of the cover;
An emergency stop switch,
A safety circuit connected to the cover open / close detection unit and the emergency stop switch;
A lighting unit including a current circuit that supplies a predetermined current to the light source and a lighting unit controller that controls the current circuit;
Comprising power supply means for supplying power to the electronic component mounting apparatus;
The safety circuit shuts off power supply to at least the drive unit and the current circuit when detecting the opening of the cover by the cover open / close detection unit or when detecting that the emergency stop switch is operated,
The power supply to the illumination unit controller is continued regardless of opening of the cover or operation of the emergency stop switch.

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