JP6621806B2 - Parts mounting machine - Google Patents

Description

  The present invention relates to a component mounting machine for preventing dust from entering a machine body.

  The component mounting machine is entirely covered with a cover member, and components are mounted on the board in a work space inside the machine body. That is, in a component mounting machine, a component is sent to a predetermined supply position by a component supply device, the component is sucked and transported by a mounting head equipped with a suction nozzle, and is mounted on a substrate carried by a substrate transport conveyor. Is done. The component mounting machine is entirely covered with a cover member, but is provided with an opening for supplying components and an opening for loading and unloading substrates. And dust and dust are floating outside the machine body, and stripped pieces of tape are generated from tape feeders and the like that supply parts. For this reason, the dust intrudes into the body through the opening, resulting in a decrease in product quality.

  Patent Document 1 below discloses a component mounting machine having a configuration in which the pressure inside the airframe covered by the cover member is increased above the atmospheric pressure outside the airframe. Specifically, clean air that has passed through a filter is taken in by a fan, and air is ejected from the inside of the body through the opening to the outside of the body. In particular, as a configuration for increasing the pressure inside the fuselage, an opening / closing door provided with a flap cover is provided for the opening for supplying components, and a closing plate is provided for the opening for carrying in and taking out the board. ing. Therefore, when a tape feeder or the like is attached to the component mounting machine, the opening / closing operation of the opening / closing door is performed, and when the board is carried in and out, the closing plate provided at the opening is provided by the variable rail. It moves left and right, and the opening area is adjusted according to the size of the substrate.

JP 2005-277212 A

  In the conventional example, in order to increase the pressure inside the airframe, the air supplied by the fan is difficult to flow out from the opening. The component mounting machine has an essential structure for opening parts for supplying components and for taking in and out the substrate. For this reason, simply sending air does not increase the pressure inside the aircraft. Therefore, the conventional example employs a configuration that closes the opening in addition to the fan. In particular, in order not to lose the function as the opening, the open / close door and the closing plate provided with the flap cover are provided with a variable rail. A mechanism for moving by means of is provided.

  However, the addition of such a structure to the opening not only increases the manufacturing cost of the component mounting machine, but also includes the possibility of causing a handling error by an operator. Also, movable structures such as flap covers and variable rails may require maintenance due to problems. Therefore, the configuration for reducing the area of the opening, which is the air outlet, is straightforward as a configuration for increasing the pressure inside the fuselage, but the above-described problem exists in the component mounting machine.

  Accordingly, an object of the present invention is to provide a component mounting machine that adjusts the flow direction of the air supplied to the inside of the machine body in order to solve such a problem.

A component mounting machine according to an aspect of the present invention includes a transport device that transports a substrate, a component supply device that accommodates a plurality of components, and a component mounting that mounts a component taken out from the component supply device onto a substrate on the transport device. A mounting apparatus main body on which the apparatus, the conveying apparatus, the component supply apparatus, and the component mounting apparatus are mounted; a cover member that forms an airframe that is integrated with the mounting machine main body and has a part of an opening; and the cover An air supply device mounted on the member for supplying air into the fuselage to increase the pressure inside the machine, and a rectifying member provided in the cover member for guiding the air supplied by the air supply device in a predetermined direction Check has the door, the air supply device is mounted on top of said cover member, said rectifying member which is disposed on top of the work space inside the fuselage, which is supplied from the air supply device Some of those which is adapted to guide in the front-rear direction.

  According to the present invention, the air fed into the cover member by the air supply device is guided not only in the air supply direction by the air supply device but also in a predetermined direction by the rectifying member, so that Air spreads over and the internal pressure is increased above the atmospheric pressure outside the aircraft. Therefore, during the operation of the air supply device, air can flow from the opening to the outside of the aircraft, dust that floats in the air can be prevented from entering the interior of the aircraft, and dust present inside the aircraft can be discharged to the outside. can do.

It is the external appearance perspective view which showed one Embodiment of the electronic component mounting machine. It is the perspective view shown in the state which saw through a part about the internal structure of the electronic component mounting machine. It is the perspective view which showed the frame structure of the electronic component mounting machine. It is the side view of the frame structure which showed the flow of the air inside the body of an electronic component mounting machine. It is the side view which showed the baffle member of 2nd Embodiment.

  Next, an embodiment of a component mounting machine according to the present invention will be described below with reference to the drawings. In the present embodiment, an electronic component mounting machine that mounts electronic components on a circuit board will be described as an example. FIG. 1 is an external perspective view showing the electronic component mounting machine. The electronic component mounting machine 1 shown here constitutes a component mounting line in which a plurality of mounting devices of the same type are arranged in the width direction and a predetermined electronic component is mounted on a circuit board. That is, in the component mounting line, the circuit boards are sequentially transported inside each electronic component mounting machine 1, and predetermined electronic components are mounted in each mounting machine.

  Although FIG. 1 shows a state where one electronic component mounting machine 1 is mounted on the base 10, two electronic component mounting machines 1 can be mounted on the base 10. The electronic component mounting machine 1 is narrow in width, and the entire component mounting line in which a plurality of electronic component mounting machines 1 are arranged close to each other in the width direction has a compact configuration. And as for the electronic component mounting machine 1 which comprises a component mounting line, the number and model of the base 10 and the electronic component mounting machine 1 are determined according to the production content.

  In the electronic component mounting machine 1, a substrate opening 101 is formed on the side surface in the width direction, and a circuit board is transferred to and from the adjacent electronic component mounting machine 1 through the substrate opening 101. In the electronic component mounting machine 1, a device such as a tape feeder 31 is mounted in a component opening 102 formed in the front portion, and components to be mounted on a circuit board are supplied. As for the direction of the electronic component mounting machine 1 shown in the description of the present embodiment, the X-axis direction shown in FIG. 1 is the width direction, the Y-axis direction orthogonal thereto is the front-rear direction, and the Z-axis direction is high. Direction.

  Here, FIG. 2 is a perspective view showing a part of the internal structure of the electronic component mounting machine 1 as seen through. The electronic component mounting machine 1 has a substrate transport device 2 for transporting a circuit board to a central portion in the front-rear direction, and a component supply device 3 for supplying electronic components is provided at the front of the machine body. A mounting head 41 for mounting electronic components is disposed at the rear of the machine body opposite to the component supply device 3. The mounting head 41 is incorporated in a component mounting apparatus 4 having a drive mechanism for mounting an electronic component taken out from the component supply apparatus 3 onto a circuit board on the substrate transport apparatus 2.

  The electronic component mounting machine 1 includes the substrate transport device 2, the component supply device 3, the component mounting device 4, and the like on the mounting machine main body 81, and a cover member 82 that covers them is integrated with the mounting machine main body 81 to form an airframe. (See FIG. 1). Therefore, inside the machine body covered with the cover member 82, the work space 100 (see FIG. 4) for mounting electronic components on the circuit board by driving the substrate transfer device 2, the component supply device 3, the component mounting device 4, and the like. ) Is configured.

  In the substrate transfer device 2, two transfer units 21 and 22 are configured by belt conveyors arranged in two rows, and transfer of a circuit board and mounting of electronic components on the circuit board are performed in two places. . Since the circuit board is delivered to and from the adjacent electronic component mounting machine 1 through the board opening 101 (see FIG. 1), the board opening 101 is always open. On the other hand, the component supply apparatus 3 mounts a device holding a plurality of electronic components on the device table 32 installed in the mounting machine body 81 as a support base. The device of this embodiment is a tape feeder 31.

  As shown in FIG. 1, the reel of the tape feeder 31 is located outside the component opening 102, and the feeding unit enters the inside of the tape feeder 31. Therefore, the electronic parts are supplied in such a manner that the electronic parts are sequentially fed into the machine body by unwinding the tape. Such a tape feeder 31 is mounted on the electronic component mounting machine 1 at the start of production, and the corresponding tape feeder 31 is replaced if the component is cut off even during production. Therefore, the component opening 102 of the electronic component mounting machine 1 is always open.

  Next, the component mounting apparatus 4 has a movable mounting head 41, and the mounting head 41 is provided with a suction nozzle capable of sucking and holding electronic components. The suction nozzle is connected to an air pressure adjusting device (not shown) so that a negative pressure or a positive pressure is generated in the suction nozzle. For this reason, the electronic component is attracted and held by the suction nozzle by setting the negative pressure, and the electronic component held by the suction can be positively detached from the suction nozzle by setting the positive pressure.

  In the component mounting apparatus 4, the mounting head 41 is moved in the front-rear direction (Y-axis direction) and the width direction (X-axis direction) of the machine body, and the height direction (Z-axis direction) is provided in the mounting head 41. The suction nozzle is configured to move up and down by an elevating mechanism. Therefore, the mounting head 41 incorporates a rotation mechanism in addition to the lifting mechanism, and the suction nozzle is configured to be able to move up and down with respect to the mounting head 41. On the other hand, the Y-axis moving mechanism is provided on a beam member 49 indicated by a one-dot chain line, and two Y-axis rails 42 are fixed in parallel, and a Y-axis slider 45 is slidably attached to the Y-axis rail 42. It has been. A screw shaft 43 connected to a Y-axis servo motor 44 is rotatably supported between the two Y-axis rails 42 via a bearing, and the screw shaft 43 passes through a nut 46 fixed to the Y-axis slider 45. It is screwed.

  In the X-axis moving mechanism, an X-axis rail 47 is formed below the Y-axis slider 45, and an X-axis slider 48 is slidably attached to the X-axis rail 47. The mounting head 41 is mounted on the X-axis slider 48. The Y-axis slider 45 is mounted with an X-axis servo motor, and a screw shaft connected to the X-axis servo motor is screwed into a nut fixed to the X-axis slider 48. Therefore, the mounting head 41 is moved on the XY plane by the Y-axis moving mechanism and the X-axis moving mechanism, and the suction nozzle mounted on the mounting head 41 is moved in the Z-axis direction by the lifting mechanism.

  And in such an electronic component mounting machine 1, the circuit board carried in from the board | substrate opening part 101 is positioned in a work place by the board | substrate conveyance apparatus 2, and the electronic component sent out from the component supply apparatus 3 is taken out by the mounting head 41, and a circuit is carried out. Mounted on the board. In such component mounting work, if dust is present inside the airframe surrounded by the cover member 82, it may adhere to the circuit board and cause product quality degradation or clogging due to the suction action of the suction nozzle. is there. Therefore, it is preferable that the dust does not enter the inside of the aircraft and the dust inside the aircraft is discharged.

  Here, FIG. 3 is a perspective view showing a frame structure of the electronic component mounting machine 1 from which the board transfer device 2, the component supply device 3, the component mounting device 4, and the like are removed. As for the electronic component mounting machine 1 of this embodiment, the air supply apparatus 5 is attached to the body upper surface (refer FIG. 1). The air supply device 5 includes a filter and a fan disposed below the filter. Therefore, when the fan operates, dust is removed from the sucked outside air by the filter, and clean air is supplied to the inside of the aircraft. That is, the air supply device 5 is for preventing the dust inside the body from entering the inside of the body by making the pressure inside the body higher than the atmospheric pressure outside the body.

  However, the air sent into the machine body flows out from the substrate opening 101 and the component opening 102. In particular, in the present embodiment, no means for reducing the area is provided for the opening in order to adjust the air discharge amount as in the conventional example described in Patent Document 1. That is, the air discharge area remains large. Therefore, if the supplied air is biased inside the fuselage and flows out only from some openings, dust outside the fuselage enters through the other openings. In the present embodiment, the air supply device 5 is installed on the upper surface of the rear part of the machine body. Therefore, it is conceivable that the sent air flows out of the substrate opening 101 only through the rear part, and outside air flows into the airframe from the component opening 102 at the front of the airframe.

  By the way, it is not essential that the air supply device 5 for supplying air to the inside of the fuselage is installed on the rear upper surface of the fuselage as in the present embodiment. In terms of air supply, the installation location may be arbitrarily set. However, in the case of the electronic component mounting machine 1 of the present embodiment, the side surface of the body is not possible because there is another electronic component mounting machine 1 arranged side by side as shown in FIG. It gets in the way when doing. In view of various circumstances, it is preferable that the upper surface of the aircraft. And if it is a fuselage upper surface, the center part and the front part may be sufficient instead of a rear part.

  In the present embodiment, the air supply device 5 is installed at the rear part. This is because the signal lamp 6 is conventionally arranged at the rear part so that the signal lamp 6 can be easily seen by the operator. That is, if the air supply device 5 is positioned in front of the signal lamp 6, it is difficult for an operator working in front of the electronic component mounting machine 1 to see. Therefore, in the present embodiment, the air supply device 5 is installed at the rear of the machine body, and the signal lamp 6 is integrally formed on the upper surface of the front portion of the air supply device 5 so that it can be easily seen by the operator. Further, since the air supply device 5 is located at the rear of the machine body, it is easy to perform operations such as filter replacement of the air supply device 5.

  When the air supply device 5 is installed on the upper surface of the rear part of the electronic component mounting machine 1, the air sent by the fan flows downward. Therefore, as described above, the air flow is biased toward the rear, and the pressure inside the fuselage also varies in height. Therefore, in the present embodiment, a rectifying member 55 for guiding the air sent into the airframe is provided. In particular, the rectifying member 55 of the present embodiment is configured to guide the air supplied downward at the rear part toward the front where the component opening 102 exists.

  The rectifying member 55 is a groove-shaped member having a side surface portion and a bottom surface portion formed by bending a thin steel plate, and is installed on the beam member 49. The rectifying member 55 is divided into two front and rear, and the first member 551 up to the intermediate position has a substantially constant lateral width, but the second member 552 arranged from the intermediate position to the front part has a lateral width. It is formed to spread gradually. Furthermore, although the first member 551 is disposed substantially horizontally, the second member 552 is inclined so that the front is lowered so as to follow the cover member 82.

  Here, FIG. 4 is a side view of the frame structure showing the air flow inside the airframe of the electronic component mounting machine 1. The air fed into the fuselage from the air supply device 5 is divided in the left and right width directions so as to avoid the beam member 49 located directly below, passes through the gap with the cover member 82, and moves downward as indicated by the arrow. Flowing (see FIG. 3). Then, the air that has flowed downward inside the fuselage flows further forward and flows. On the other hand, the air that collides with the beam member 49 and flows forward flows along the rectifying member 55 to the front of the body.

  Since the open upper part is covered with the cover member 82, the rectifying member 55 constitutes a flow path having a so-called cylindrical shape. Therefore, the supplied air flows through the space and is sent to the front of the aircraft. The air that has flowed to the front of the machine body flows downward through the gaps between the members, and further flows from the front part of the machine body to the rear side to the work space 100. At this time, part of the air that has flowed to the front part of the machine body flows out from the component opening 102 to the outside of the machine body. Further, the air that has entered from the front-rear direction flows out from the substrate opening 101 formed in the central portion of the side surface. However, when the electronic component mounting machines 1 are arranged side by side in the width direction of the machine body, since the position of the substrate opening 101 is close to the adjacent one, the outflow air collides with each other and discharge is restricted. The pressure inside the fuselage is increased.

  Therefore, according to the electronic component mounting machine 1 of the present embodiment, the air supplied into the airframe by the air supply device 5 is guided not only in the air supply direction by the fan but also in a predetermined direction by the rectifying member 55. . Then, air spreads throughout the airframe without being biased, and the pressure inside the airframe is increased above the atmospheric pressure outside the airframe. Therefore, during the operation of the fan, air can flow from the inside of the machine body to the outside of the machine body at the board opening 101 and the component opening 102, and dust outside the machine body floating in the air can be prevented from entering the machine body, It is also possible to discharge dust existing inside the machine body to the outside.

  In the present embodiment, the pressure inside the machine body is generally increased by adjusting the flow direction of the air supplied by the rectifying member 55 in this way. Therefore, it is not necessary to use a fan with a higher output than necessary in order to allow air to reach every corner of the aircraft. Further, there is no special configuration for adjusting the opening area of the board opening 101 or the component opening 102, the structure for increasing the pressure inside the machine body is simpler than that of the conventional example, and the special work by the operator Is not necessary.

  Further, in the present embodiment, as described above, it is sufficient to supply air with the fan output suppressed. And since the air sent in by the fan collides with the beam member 49 or is changed in direction by the rectifying member 55 and flows, it is sent to the work space 100 in a state where the flow velocity is weakened. Therefore, the flow velocity in the work space 100 is slow, and the influence on the component mounting of the circuit board can be prevented. For example, it can be avoided that the solder on the circuit board is dried by the fast flow of air and the mounting of the electronic component is hindered.

  Then, 2nd Embodiment of an electronic component mounting machine is described. FIG. 5 is a side view showing the main part of the present embodiment, and the same reference numerals are given to the same configurations as those of the first embodiment. Moreover, the main structure regarding an electronic component mounting machine is common in the said 1st Embodiment. In this embodiment, the air supply device 5 is attached to the upper surface of the cover member 82 as in the first embodiment (see FIG. 1), and the rectifying member 56 is installed on the beam member 49. The flow regulating member 56 is formed in a groove shape having a side surface portion and a bottom surface portion in the width direction by bending a thin steel plate.

  The rectifying member 56 is divided into two front and rear, and the lateral width of the first member 561 up to the intermediate position is substantially constant, but the lateral width of the second member 562 arranged from the intermediate position to the front portion gradually increases. It is formed to spread. Furthermore, although the first member 561 is disposed substantially horizontally, the second member 562 is inclined so that the front is lowered so as to follow the cover member 82. Furthermore, the flow straightening member 56 of the present embodiment has a flow dividing portion 565 formed on the side surface portion of the first member 561.

  The diversion part 565 is for flowing part of the air flowing in the rectifying member 56 to the side, and is formed on both the left and right sides of the first member 561, and is formed in two places in the longitudinal direction of the rectifying member 56. Yes. The flow dividing portion 565 is cut into the side surface of the first member 561 to form a rectangular door 567, and is bent to the outside of the rectifying member 5 with the rear side (right side of the drawing) where the air supply device 5 is located as an axis. It has been. However, the flow dividing portion 565 is not limited to such a configuration. For example, the first member 561 may be changed in the way of cutting, and the same rectangular door may be bent inside the rectifying member 56 with the front side as an axis. Further, the side surface of the first member 561 may be cut out in the size of the door 567.

  Therefore, according to the electronic component mounting machine of the present embodiment, the air supplied into the airframe by the air supply device 5 wraps around the left and right outside so as to avoid the beam member 49 and passes through the gap with the cover member 82. It flows downward, further wraps around the front of the machine body and flows into the work space 100 (see FIG. 4). Further, the supplied air is guided not only in the blowing direction by the fan but also in front of the machine body by the rectifying member 56. Accordingly, the air that has collided with the beam member 49 and has flowed forward flows along the flow straightening member 56 to the front of the machine body, and further flows downward to the rear of the machine body and flows into the work space 100. At that time, a part of the air flowing forward along the rectifying member 56 flows sideways out of the flow dividing portion 565 and flows from both sides in the width direction to the lower work space 100.

  Therefore, also in this embodiment, air will spread throughout the interior of the aircraft, and the internal pressure will be higher than the atmospheric pressure outside the aircraft. Therefore, during the operation of the fan, air can flow from the inside of the machine body to the outside of the machine body at the board opening 101 and the component opening 102, and dust outside the machine body floating in the air can be prevented from entering the machine body, It is also possible to discharge dust existing inside the machine body to the outside. In particular, in the present embodiment, air can flow through the flow dividing portion 565 of the rectifying member 56, and further, the air spreads over the entire inside of the fuselage and the internal pressure is increased without unevenness.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to these, A various change is possible in the range which does not deviate from the meaning.
In the above-described embodiment, the air supply direction by the air supply device 5 is set right below. However, for example, the air supply device 5 may be inclined and installed so as to be supplied obliquely forward. Thereby, it becomes easy to flow air from the air supply device 5 installed on the rear upper surface of the airframe to the entire inside of the airframe.
Also, the air supply device 5 is not located on the rear upper surface of the fuselage, but on the front and rear center part, and the rectifying member is arranged in the front and rear direction, or on the front upper surface and the rectifying member is arranged rearward. It may be.
Further, the component mounting machine may be other than the electronic component mounting machine described above.

DESCRIPTION OF SYMBOLS 1 ... Electronic component mounting machine 3 ... Component supply apparatus 4 ... Component mounting apparatus 5 ... Air supply apparatus 6 ... Signal lamp 49 ... Beam member 55 ... Rectification member 81 ... Mounting machine main body 82 ... Cover member 100 ... Work space 101 ... Substrate opening Part 102: Part opening

Claims (5)

A transfer device for transferring a substrate;
A component supply device containing a plurality of components;
A component mounting device for mounting a component taken out from the component supply device on a substrate on the transport device;
A mounting machine body on which the transport device, the component supply device, and the component mounting device are mounted;
A cover member that constitutes an airframe having an opening in part with the mounting machine body;
An air supply device mounted on the cover member for supplying air into the airframe to increase the in-machine pressure;
A rectifying member that is provided in the cover member and guides the air supplied by the air supply device in a predetermined direction ;
Have
The air supply device is attached to an upper portion of the cover member, and the rectifying member is disposed at an upper portion of a work space inside the machine body so as to guide a part of the air supplied from the air supply device in the front-rear direction. A component mounting machine characterized by being made into a product. The component mounting machine according to claim 1 , wherein the air supply device is attached to a rear portion of the cover member. The air supply device is attached to the cover member so as to supply air downward, and the rectifying member guides a part of the air supplied from the air supply device to a front portion of the work space. The component mounting machine according to claim 1 , wherein the component mounting machine is configured as described above. The component mounting machine according to claim 3 , wherein the rectifying member has a groove shape having a side surface portion and a bottom surface portion. 5. The component mounting machine according to claim 4 , wherein the rectifying member is formed with a diverting portion that diverts part of the air flowing from the rear to the front.

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