JP2007123668A - Surface mounter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface mounter for improving mounting efficiency by simultaneously sucking or mounting a plurality of electronic components. <P>SOLUTION: A surface mounter is provided with two head units 4 and 5. Those head units 4 and 5 are provided with a first driving device 61 for moving at least one suction head (first suction head 43) to a Y direction. The head units 4 and 5 are provided with a second driving device 71 for moving at least one suction head (second suction head 44 or third suction head 45) to an X direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a surface mounter equipped with two head units.

  As a conventional surface mounter, for example, as disclosed in Patent Document 1, a suction head having a suction nozzle is supported by a head unit, and the head unit is translated in two horizontal directions above a printed wiring board. There is a configuration to make it. A moving device for moving the head unit is provided above a conveyor that conveys the printed wiring board, and is mounted on a base together with the conveyor. In the following, the direction parallel to the transport direction of the printed wiring board among the two horizontal directions will be referred to as the X direction, and the other direction, that is, the direction intersecting the X direction will be referred to as the Y direction.

  The moving device includes an X-direction feeding mechanism, a Y-direction feeding mechanism, and a head unit movable in the X and Y directions. The Y-direction feed mechanism is positioned on both sides of the base and is supported in a movable manner by a pair of Y-direction guide rails that extend in the Y direction. The Y-direction feed mechanism is horizontally mounted between the pair of Y-direction guide rails. A support member extending in the X direction, and a Y direction drive device for reciprocating the support member along the Y direction guide rail. The X-direction feed mechanism includes an X-direction guide rail provided on the support member so as to extend in the X direction, and the head unit movably supported by the X-direction guide rail along the X-direction guide rail. It is comprised by the X direction drive device made to reciprocate.

The suction head provided in the head unit is formed to extend in the vertical direction, and a suction nozzle is attached to the lower end portion. Further, the suction head includes a lifting device that lifts and lowers the suction nozzle and a rotation drive device that rotates the suction nozzle about an axis in the vertical direction.
In recent surface mounters, in order to improve mounting efficiency, as disclosed in Patent Document 2, for example, one head unit is equipped with a plurality of suction heads.
JP 2002-134994 A (FIG. 1) Japanese Patent Laid-Open No. 2003-163497 (FIG. 1)

  In the conventional surface mounter configured as described above, it is required to further improve the mounting efficiency when mounting electronic components on a printed wiring board. However, in the conventional surface mounter, even if a plurality of suction heads are provided in the head unit, it is necessary to mount the electronic components one by one, and thus there is a limit to increasing the mounting efficiency.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a surface mounting machine in which mounting efficiency is improved by simultaneously sucking or mounting a plurality of electronic components.

  In order to achieve this object, a surface mounting machine according to the present invention includes a base having a conveyor for transporting a printed wiring board and a plurality of component supply positions arranged in a predetermined first direction on the side of the conveyor. A component supply unit, a plurality of suction heads having suction nozzles, a head unit that supports the plurality of suction heads arranged side by side in the first direction, and the head unit between the component suction position and the printed wiring board. In the surface mounter including the moving device that moves between the head units, two head units are provided above one base, and at least one of the head units has the suction head in the first direction. Is equipped with a first driving device for moving in a horizontal second direction that intersects and a second driving device for moving the suction head in the first direction, respectively. Than is.

  A surface mounter according to a second aspect of the present invention is the surface mounter according to the first aspect, further comprising a support member that movably supports two head units in a first direction, the support member And the printed wiring board are configured to be relatively movable in the second direction.

  A surface mounter according to a third aspect of the present invention is the surface mounter according to the second aspect, further comprising a substrate table that allows the printed wiring board to move in the first direction in the middle of the conveyor, and the substrate table A plurality of parts supply positions are arranged on both sides of the machine.

  A surface mounter according to a fourth aspect of the present invention is the surface mounter according to the second aspect, wherein the substrate can be positioned and fixed in the middle of the conveyor, and the support member can be moved in the second direction. Then, by moving both head units integrally in the second direction, the components picked up at a plurality of component supply positions can be moved above the printed wiring board on which the printed wiring board is positioned. .

  A surface mounter according to a fifth aspect of the present invention is the surface mounter according to the fourth aspect, wherein the conveyor has a first mounting position corresponding to one head unit and a first mounting position corresponding to the other head unit. The printed wiring board can be positioned at each of the two mounting positions.

  A surface mounter according to a sixth aspect of the present invention is the surface mounter according to the fifth aspect, wherein the component supply unit supplies a large number of tapes for supplying electronic components to the printed wiring board located at the first mounting position. A first tape feeder group comprising a feeder, and a second tape feeder group comprising a plurality of tape feeders for supplying electronic components to a printed wiring board located at a second mounting position, wherein the first tape The feeder group and the second tape feeder group are tape feeders located in close proximity to each other as a shared tape feeder group. The shared tape feeder group includes a printed wiring board located at the first mounting position and a second tape feeder group. A tape feeder having electronic components to be supplied to a printed wiring board located at a mounting position is provided.

  According to the present invention, the suction head is driven by the first driving device, and the suction head is driven by the second driving device, whereby the plurality of suction heads are simultaneously positioned at a predetermined suction position or mounting position. Can do. Therefore, the plurality of suction heads can be positioned at the suction position or the mounting position by the first and second driving devices in a state in which the head unit is stopped at a predetermined position, and two head units are arranged as one unit. The electronic components can be sucked or mounted simultaneously by a plurality of suction heads of at least one head unit while being supported by the moving device.

  Therefore, according to the surface mounting machine according to the present invention, two head units are driven by a moving device for a set of head units, and a plurality of printed circuit boards are printed on at least one of these head units. The electronic parts can be mounted simultaneously. For this reason, according to the present invention, it is possible to provide a surface mounter with even higher mounting efficiency.

  According to the second aspect of the present invention, the component suction at the component suction position and the mounting after moving up the printed wiring board can be performed alternately by two head units, and at least one head unit can Since at least two components can be sucked simultaneously or can be mounted simultaneously, mounting efficiency can be improved.

  According to the third aspect of the invention, the component suction at the component suction position and the mounting by moving up the printed wiring board can be carried out by alternately moving the two head units in the X direction. Since at least one of the head units can simultaneously suck or simultaneously mount at least two parts, the mounting efficiency can be further improved.

  According to the fourth aspect of the invention, both of the two head units are moved above the component supply position, and the component suction operation can be performed during the same suction timing. That is, at least two parts can be simultaneously sucked in each head unit. In mounting a component on one printed wiring board using two head units, the head unit is sequentially moved above the printed wiring board for mounting. At least one of the head units is used to mount at least two components. Simultaneous mounting is possible. As a result, the mounting efficiency can be improved.

  According to the fifth aspect of the invention, each of the two head units can be moved above one printed wiring board and can be mounted at the same mounting timing on at least one printed wiring board. Mounting efficiency can be improved. When both the head units are equipped with the first driving device and the second driving device, they can be simultaneously mounted on the respective printed wiring boards in the same manner, and the mounting efficiency is further improved. .

  According to the surface mounter according to the sixth aspect of the present invention, in order to equip the tape feeder for every two printed wiring boards, it is only necessary to prepare one set of the tape feeders of the common tape feeder group. For this reason, compared with the case where all the tape feeders are prepared for every printed wiring board, the quantity of tape feeders can be reduced.

Hereinafter, an embodiment of a surface mounter according to the present invention will be described in detail with reference to FIGS.
1 is a plan view showing the configuration of the surface mounter according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view showing the configuration of the conveyor, FIG. 4 is a plan view showing the configuration of the head unit, and FIG. It is a side view of a head unit. 6 to 8 are cross-sectional views showing the configuration of the third drive unit, FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5, FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. It is a VIII-VIII sectional view taken on the line.

  FIG. 9 is a longitudinal sectional view of the suction head, which is a sectional view taken along line IX-IX in FIG. FIG. 10 is a perspective view of a surface mounter according to the present invention, FIG. 11 is an enlarged perspective view showing a part of the head unit, and FIG. 12 is a perspective view showing a configuration of a component recognition camera. FIG. 13 is a diagram showing a configuration in which a component recognition camera is mounted on a support member, FIG. 14 is a plan view showing a configuration in which a head unit is configured by four suction heads, and FIG. 15 is a diagram showing a head unit by five suction heads. It is a top view which shows the form which comprised. FIG. 16 is a configuration diagram showing a modification in the direction in which the suction head is moved.

  In these drawings, the reference numeral 1 indicates a surface mounter according to this embodiment. As shown in FIGS. 1, 2 and 10, the surface mounter 1 includes a base 2, a conveyor 3 provided on the base 2, and two head units 4 and 5 which will be described later. 1 includes a moving device 6 for moving in the left-right direction (hereinafter, this direction is simply referred to as the X direction) and in FIG. 1 in the vertical direction (hereinafter, this direction is simply referred to as the Y direction). Yes.

The base 2 has side support bases 7 and 7 positioned at both ends in the X direction, and a main support portion 8 formed so as to be relatively low between the side support bases 7 and 7. And.
The conveyor 3 is mounted on the main support portion 8, and the printed wiring board 9 (see FIG. 10) is transferred from the right side to the left side in FIG. 1 through a transfer port 7 a (see FIG. 10) formed in the side support base 7. Transport to. That is, the conveyor 3 conveys the printed wiring board 9 in the X direction. The X direction corresponds to the first direction in the present invention, and the Y direction corresponds to the second direction in the present invention.

  As shown in FIG. 3, the conveyor 3 according to this embodiment includes a pair of conveyor bodies 3 a and 3 b, and a belt (not shown) for each of the conveyor bodies 3 a and 3 b by a driving device 11 having a driving motor 10. The structure which rotates is adopted. At the center in the X direction of these conveyors 3a and 3b, the clamping plate 3c fixed in a state facing the upper side of the transport path and the printed wiring board 9 are pushed up from below and pressed against the clamping plate 3c from below. And a printed wiring board lifting device (not shown).

  Of the pair of conveyor bodies 3a and 3b, the conveyor body 3a located on the upper side in FIG. 3 is connected to an interval changing device 12 for changing the distance between the other conveyor body 3b. The interval changing device 12 is attached to the conveyor body 3a in a state of being engaged with the ball screw shaft 12a, a plurality of ball screw shafts 12a extending in the Y direction, a motor 12b for driving the ball screw shaft 12a. And a ball screw nut 12c. The conveyor 3 can convey a large printed wiring board denoted by reference numeral 9A in FIG. 3 by increasing the interval between the conveyor bodies 3a and 3b by the interval changing device 12, and the interval is reduced. Thus, a small printed wiring board denoted by reference numeral 9B in the figure can be conveyed.

  The conveyor 3 according to this embodiment is configured so that the large printed wiring board 9A and the small printed wiring board 9B can be stopped at a plurality of stop positions, respectively. That is, the conveyor 3 includes a mounting standby position 13 positioned at an end on the right side (upstream side in the transport direction) in FIG. 3, a mounting position 14 positioned in the center in the X direction, and a left side (downstream side in the transport direction) in FIG. A stopper 16 is provided so that the printed wiring boards 9A and 9B can be stopped at the unloading standby position 15 located at the end of the bracket.

. The stopper 16 includes a rod (not shown) that protrudes and descends from below with respect to the conveyance path of the printed wiring board 9, and stops the printed wiring board by contacting the end edge of the printed wiring board 9 with the rod. Of structure. The stopper 16 can stop the large printed wiring board 9A one by one at the three stop positions, and can stop two small printed wiring boards 9B at the three stop positions. A total of 6 units are installed in such a position that they can. By mounting the stopper 16 in this way, the mounting position 14 is substantially divided into a first mounting position 14a and a second mounting position 14b when holding the small printed wiring board 9B. .

  An electronic component 21 (see FIG. 12) is mounted on the printed wiring board 9 held at the mounting position 14 by two head units 4 and 5 described later. When the electronic component 21 is mounted on the two small printed wiring boards 9B, the small printed wiring board 9B held at the first mounting position 14a located on the left side in FIG. , 5, the electronic component 21 is mounted by the first head unit 4 located on the left side in FIG. The electronic component 21 is mounted on the other printed wiring board 9B held at the second mounting position 14b by the other second head unit 5.

  As shown in FIG. 1, component supply parts 22 are provided on both ends of the base 2 on the main support part 8 in the Y direction. These component supply parts 22 and 22 are comprised by many tape feeders 22a. The moving device 6 is configured to move the head units 4 and 5 between the component supply position 22b (see FIG. 10) of the tape feeder 22a and the printed wiring board 9 at the mounting position 14. .

  The component supply unit 22 includes a first tape feeder group 22A composed of a number of tape feeders 22a, 22a,... Located on the left side in FIG. 1 and a number of tape feeders 22a, 22a,. And a second tape feeder group 22B. The first tape feeder group 22A and the second tape feeder group 22B are configured by using a plurality of tape feeders 22a located close to each other as a shared tape feeder group 22C.

  The first head unit 4 is responsible for transferring the electronic components 21 from the respective tape feeders 22a of the first tape feeder group 22A, and the electronic components 21 from the respective tape feeders 22a of the second tape feeder group 22B are transferred. The transfer is performed by the second head unit 5. In the surface mounting machine according to the present embodiment, when two small printed wiring boards 9B and 9B are used, the printed wiring board 9B at the first mounting position 14a is first moved by the first head unit 4. The electronic component 21 is transferred from the tape feeder 22a of the tape feeder group 22A. In this case, the electronic component 21 is transferred from the tape feeder 22a of the second tape feeder group 22B to the printed wiring board 9B at the second mounting position 14b by the second head unit 5.

  In order to mount the electronic component 21 on the two printed wiring boards 9B and 9B with the two head units 4 and 5 as described above, two sets of all electronic components 21 used for the small printed wiring board 9B are prepared. It is necessary to keep it. However, in the surface mounter 1 according to this embodiment, a plurality of tape feeders 22a in the shared tape feeder group 22C can be shared by both head units 4 and 5, so two sets of tapes must be prepared. The feeder 22a may be one that excludes the tape feeder 22a of the common tape feeder group 22C.

  As shown in FIGS. 1, 2, and 10, the moving device 6 is mounted on left and right side support bases 7, 7 of the base 2. Y direction guide rails 23, 23 extending in the Y direction are mounted on the side support bases 7, 7, respectively. A support member 24 described later is supported on the Y-direction guide rails 23 and 23 so as to be movable in the Y direction.

  As shown in FIG. 1, the support member 24 includes a pair of first frame members 25 and 25 extending in a direction (X direction) orthogonal to the Y-direction guide rail 23 in plan view, and these first frame members. It is formed in a frame shape by a pair of second frame members 26, 26 that connect between 25, 25. The pair of first frame members 25, 25 are spaced apart from each other by a predetermined interval so that a part of the head units 4, 5 described later can be accommodated between the first frame members 25, 25. Separated to keep. The first frame member 25 is supported by the Y-direction guide rail 23 at both ends in the X direction.

Each of the second frame members 26 and 26 is formed to extend in the Y direction, connects the end portions in the X direction of the first frame member 25, and is supported by the Y direction guide rail 23. Yes.
The second frame members 26 and 26 are respectively connected to Y-direction drive devices 31 and 31 for reciprocating the support member 24 in the Y direction.

  The Y-direction drive devices 31, 31 each have a ball screw shaft 32 rotatably supported on the side support base 7 while extending in the Y direction on the side support base 7, and the ball screw shaft 32. A connecting member having a motor 33 to be rotated and a ball screw nut 32a (see FIG. 10) to be screwed onto the ball screw shaft 32, and further holding and fixing the ball nut 32a and connected to the second frame member 26. 34.

  An X-direction guide rail 35 extending in the X direction is attached to the pair of first frame members 25 constituting the support member 24. These X-direction guide rails 35 and 35 support leg members 36 and 36 (see FIGS. 5 and 10) of the head units 4 and 5, which will be described later, so as to be movable in the X direction. On the first frame member 25, X-direction drive devices 37, 37 for translating the head units 4, 5 in the X direction are provided.

  In the surface mounter 1 according to this embodiment, since the two head units 4 and 5 are mounted on the support member 24, two X-direction drive devices 37 are also provided. The first head unit 4 located on the left side in FIG. 1 of the two head units 4 and 5 is the first frame member 25 located on the upper side in FIG. 1 of the pair of first frame members 25 and 25. It is driven by an X-direction drive device 37 provided in. The second head unit 5 located on the right side in FIG. 1 is driven by an X-direction drive device 37 provided on the first frame member 25 located on the lower side in FIG.

  Each of the X-direction drive devices 37 and 37 includes a ball screw shaft 38 rotatably supported on the first frame member 25 in a state of extending in the X direction on the first frame member 25, and the ball screw shaft 38. A connecting member that has a motor 39 to be rotated and a ball screw nut 40 that is screwed onto the ball screw shaft 38, and further holds the ball nut 40 and is connected to the leg member 36 of the head unit 4 or the head unit 5. 41 (see FIG. 5). The end of the ball screw shaft 38 opposite to the motor 39 is rotatably supported by a bearing 38a as shown in FIG.

  The first head unit 4 and the second head unit 5 have the same structure, and are mounted on the support member 24 so that the front and rear directions are opposite to each other, as shown in FIG. For this reason, here, the first head unit 4 will be described in detail, and the second head unit 5 will be denoted by the same reference numerals and detailed description thereof will be omitted.

  As shown in FIGS. 4 and 5, the first head unit 4 includes a main frame 42 formed in a rectangular shape in plan view, and first to third suction heads provided inside the main frame 42. 43 to 45, a component recognition camera 46, and the like. As shown in FIG. 4, the main frame 42 includes a front wall 51 located on the front side of the apparatus (lower side in FIG. 4), a rear wall 52, a left side wall 53, a right side wall 54, and the like.

  As shown in FIGS. 4 and 5, the leg members 36 for mounting the head unit on the support member 24 are respectively provided at both ends of the front wall 51 and the rear wall 52 of the main frame 42 in the X direction. Is provided. These leg members 36 protrude from the front wall 51 and the rear wall 52 in the Y direction, and include a slider 55 at the tip. The main frame 42 is movably supported by the X-direction guide rail 35 via the slider 55.

  As shown in FIG. 6, a pair of guide walls 56, 56 extending in the Y direction is provided on the front side of the main frame 42 at the center in the X direction. The first suction head 43 is disposed in the space between the guide walls 56 and 56. Two guide members 58 are fixed to one guide wall 56 in the Y direction, and the guide members 58 and 58 support a rail member 57 that is a component of the suction head 43 movably. The first suction head 43 is held on the main frame 42 by an output shaft 62 a of a motor 62 fixedly held on the front wall 51 and guide members 58 and 58. The Y-direction slide mechanism 59 is configured by a guide member 58 that functions as a so-called guide rail and a rail member 57 that functions as a so-called slider.

  As shown in FIGS. 4 and 6, the front wall 51 of the main frame 42 is provided with a first drive device 61 for reciprocating the first suction head 43 in the Y direction. The first driving device 61 includes a motor 62 attached to the main frame 42 so that the axial direction is in the Y direction, a ball screw shaft 63 provided on an output shaft 62a of the motor 62, and the ball screw. A ball screw nut 64 fixed to the first suction head 43 in a state of being screwed to the shaft 63 is configured. That is, the first suction head 43 is mounted on the one end side in the Y direction in the main frame 42 so as to be movable only in the Y direction at the center in the X direction, and is moved in the Y direction by the first driving device 61. It can be reciprocated.

  As shown in FIGS. 4 and 9, an X-direction slide mechanism including a guide rail 65 extending in the X direction and a slider 66 movably supported by the guide rail 65 is provided at the rear portion of the main frame 42. The two sub-frames 67 and 68 are provided so as to be movable in the X direction. The guide rail 65 is fixed to the rear wall 52 of the main frame 42, and the slider 66 is fixed to X-direction extending portions 67a and 68a of the sub frames 67 and 68, which will be described later.

  As shown in FIGS. 4, 7, 8, and 9, the two sub-frames 67 and 68 have an X-direction extending portion 67 a that extends in the X-direction and the vertical direction in parallel with the rear wall 52 of the main frame 42. 68a and Y-direction extending portions 67b and 68b extending from one end in the X direction of the X-direction extending portions 67a and 68a to the opposite side of the rear wall 52 in the Y-direction. Is formed. Of these sub-frames 67 and 68, the Y-direction extension 67b of the first sub-frame 67 located on the left side in FIG. 4 is connected to the left end of the X-direction extension 67a. On the other hand, the Y-direction extension 68b of the second sub-frame 68 located on the right side in FIG. 4 is connected to the right end of the X-direction extension 68a.

  As shown in FIG. 7, the second and third suction heads 44 and 45 are moved together with the sub frames 67 and 68 in the X direction on the Y direction extending portions 67 b and 68 b of the two sub frames 67 and 68. A second drive device 71 is provided for each. These second drive devices 71 are provided on a motor 72 attached to the left side wall 53 or the right side wall 54 of the main frame 42 so that the axial direction is in the X direction, and an output shaft 72a of the motor 72. A ball screw shaft 73 and a ball screw nut 74 fixed to the Y-direction extending portions 67b and 68b in a state of being screwed to the ball screw shaft 73 are configured.

  The motor 72 of the second driving device 71 that drives the first sub-frame 67 located on the left side in FIG. 4 among the two sub-frames 67 and 68 is provided with a left side wall 53 of the main frame 42 as shown in FIG. The motor 72 of the second driving device 71 that drives the other second sub-frame 68 is mounted so as to protrude rightward from the right wall 54 of the main frame 42. ing.

  That is, the motor 72 is provided so as to protrude from both ends (X direction) from one end portion of the main frame 42 in the Y direction. For this reason, when the two head units 4 and 5 approach each other, the motor 72 interferes with the other head unit. In this embodiment, since the first head unit 4 and the second head unit 5 are mounted on the support member 24 so that the front-rear direction is opposite, the motor 72 of the head unit 4 and the head unit 5 are mounted. The motor 72 does not interfere with each other, and the interval when the head units 4 and 5 are brought close to each other can be reduced.

  On the side opposite to the left side wall 53 of the main frame 42 in the Y direction extending portion 67b of the first sub-frame 67, two guide members (so-called guide rails) in the Y direction are provided as shown in FIGS. The second suction head 44 is movable in the Y direction via a Y-direction slide mechanism 77 composed of a rail member (corresponding to a so-called slider) 75 movably supported by the guide member 76. It is attached to.

  On the other hand, on the side opposite to the right side wall 54 of the main frame 42 in the Y direction extending portion 68b of the second sub frame 68, as shown in FIG. 4, there are two guide members (so-called guide rails) in the Y direction. ) 79 and a rail member (corresponding to a so-called slider) 78 movably supported by the guide member 79, the third suction head 45 is mounted movably in the Y direction via a Y-direction slide mechanism 80. Has been. The rail members 75 and 78 of these two slide mechanisms 77 and 80 are fixed to the second and third suction heads 44 and 45, and the guide members 76 and 79 are fixed to the Y-direction extending portions 67b and 68b. .

As shown in FIGS. 8 and 9, the X-direction extension 67 a of the first sub-frame 67 and the X-direction extension 68 a of the second sub-frame 68 have second and third suctions as shown in FIGS. A first driving device 81 for moving the heads 44 and 45 in the Y direction is provided.
The first driving device 81 includes a motor 82 attached to the X-direction extending portions 67a and 68a of the sub frames 67 and 68 so that the axial direction is in the Y direction, and an output shaft 82a of the motor 82. The ball screw shaft 83 is provided, and a ball screw nut 84 fixed to the second or third suction heads 44 and 45 so as to be screwed to the ball screw shaft 83. The output shafts 82a and 82a of the motors 82 and 82 pass through the X-direction extending portions 67a and 68b, respectively, while the casings of the motors 82 and 82 are openings 52a formed in the rear wall 52 of the main frame 42. It projects rearward from the main frame 42 through (see FIG. 8). The opening 52 a is for avoiding interference between the motor 82 and the rear wall 52 when the motor 82 moves in the X direction together with the second and third suction heads 44 and 45.

  That is, the second suction head 44 and the third suction head 45 are mounted inside the main frame 42 so as to be movable in the X direction and the Y direction, respectively, and are attached to the main frame 42 by the second driving device 71. On the other hand, the first drive device 81 reciprocates in the X direction and reciprocates in the Y direction with respect to the main frame 42.

As shown in FIGS. 5, 9 and 11, the first to third suction heads 43 to 45 are suction head bodies 91 to which the ball screw nuts 64 and 84 of the first drive devices 61 and 81 are attached. A lifting member 93 supported by the suction head body 91 via a slide mechanism 92 in the vertical direction (hereinafter referred to as Z direction), and a suction nozzle 94 attached to the lower end of the lifting member 93. Etc.
The Z-direction slide mechanism 92 includes a guide rail 95 fixed to the suction head main body 91 so as to extend in the vertical direction, and a slider 96 supported by the guide rail 95 so as to be movable up and down and fixed to the lifting member 93. It is configured.

  The suction head main body 91 is formed to have a length penetrating the main frame 42 in the Z direction, and includes a Z direction driving device 101 for moving the lifting member 93 up and down. The Z-direction drive device 101 includes a motor 102 attached to the upper end portion of the suction head main body 91 in a state where the axis is directed downward, a ball screw shaft 103 connected to the output shaft 102a of the motor 102, and the ball The ball screw nut 104 is fixed to the elevating member 93 in a state of being screwed to the screw shaft 103.

  The elevating member 93 supports the suction nozzle 94 so as to be rotatable about an axis in the Z direction. The rotary drive device 105 for rotating the suction nozzle 94 about the axis and air is sucked from the suction nozzle 94. And an air suction pipe 106 (see FIG. 11). The rotation driving device 105 has a configuration in which the suction nozzle 94 is rotated by a motor 107 provided at a position above the suction nozzle 94 in the elevating member 93 so that the axis is directed downward.

  As shown in FIG. 4, the first to third suction heads 43 to 45 configured as described above are mounted on the main frame 42 so that the suction nozzles 94 are arranged in the X direction. Specifically, the first suction head 43 is provided at the front portion of the main frame 42 and at the center in the X direction so as to extend rearward from the front wall 51. The second suction head 44 and the third suction head 45 are provided so as to extend forward from the rear wall 52 on both sides in the X direction, which are the rear portion of the main frame 42.

  By mounting the first to third suction heads 43 to 45 on the main frame 42 in this way, the distance between the three suction nozzles 94 in the X direction can be changed by the second driving device 71. The position of each suction nozzle 94 in the Y direction with respect to the main frame 42 can be changed by the first driving devices 61 and 81. That is, in the surface mounter 1 according to this embodiment, the interval between the suction nozzles 94 in the X direction can be made to coincide with the installation interval of a large number of tape feeders 22a. The component 21 can be adsorbed.

  That is, when the tape feed amount of the tape feeder 22a varies, or when the Y-direction attachment position of the tape feeder 22a itself to the base 2 varies, the position of the component storage recess of the tape that becomes the component takeout position Varies in the Y direction for each tape feeder 22a, but the head units 4 and 5 are mounted with an imaging device (not shown) that images the lower part, and the vicinity of the takeout position is imaged, and the takeout position for each tape feeder 22a is in the Y direction. By detecting the position and changing the position of each suction nozzle 94 relative to the main frame by the first drive devices 61 and 81 based on the result, it is possible to suck a plurality of electronic components 21 at a time.

  The position of the electronic component 21 relative to the suction nozzle 94 when the electronic component 21 is attracted to the suction nozzle 94 is determined by the component recognition camera 46 (see FIGS. 4, 5, and 12) provided on the main frame 42. Are picked up from below and detected by image processing.

  4, 5, and 12, the component recognition camera 46 protrudes rightward (leftward in FIG. 12) from the right side wall 54 of the main frame 42 and has an axis oriented in the X direction. The motor 111 supported on the right side wall 54, the ball screw shaft 112 provided on the output shaft 111 a of the motor 111, and the moving member 114 to which the ball screw nut 113 screwed to the ball screw shaft 112 is fixed. And a camera body 115 attached to the moving member 114.

  The moving member 114 includes a guide rail 116 (see FIG. 12) that is fixed to the front wall 51 and extends in the X direction, and a slider 117 that is movably supported by the guide rail 116 and fixed to the moving member 114. The slide mechanism 118 is supported at the lower end of the main frame 42 so as to be movable in the X direction. As shown in FIG. 4, in the slide mechanism 118, the moving member 114 moves between a position on the outer side (left side) of the second suction head 44 and a position on the outer side (right side) of the third suction head 45. It is formed to be able to. Further, as shown in FIG. 12, the moving member 114 includes a large number of light emitting elements 119, and is configured to irradiate light from below to the electronic component 21 sucked by the suction nozzle 94 at the time of photographing.

  The camera body 115 includes an imaging element (not shown) such as a linear sensor or an area sensor, and is attached to the moving member 114 so as to extend in the Y direction as shown in FIG. When the electronic component 21 is imaged by the component recognition camera 46, the moving member 114 is moved in the X direction by the ball screw type driving device 120 having the motor 111 in a state where the electronic component 21 is adsorbed to the adsorption nozzle 94. However, the suction nozzle 94 side illuminated by the light emitting element 119 is looked up from below through a mirror (not shown) provided in the moving member 114.

  In the component recognition camera 46 according to this embodiment, as shown in FIG. 5, the ball screw shaft 38 of the X direction driving device 37 and the second driving device 71 are positioned on the opposite side in the Y direction. Provided in the head units 4 and 5. Therefore, the component recognition camera 46 does not interfere with the drive system members of the head units 4 and 5. Furthermore, by disposing the component recognition camera 46 below the main frame 42, the X direction driving device 37, the first driving device 61, and the second driving device 71 disposed above the main frame 42 are moved up and down. Since they are separated in the direction, there is less interference.

  The suction position shift of the electronic component 21 detected by the component recognition camera 46 is corrected by changing the position of each suction nozzle 94 by driving the second driving device 71 and the first driving devices 61 and 81. . The suction position shift generated in the suction nozzle 94 provided in the first suction head 43 moves the first suction head 43 in the Y direction by the first driving device 61 and drives the head units 4 and 5 in the X direction. Correction is made by moving the device 37 in the X direction. Further, in the case where the electronic component 21 is sucked in the state where the electronic component 21 is rotated around the axis in the Z direction in the first suction head 43, the rotation direction is set by rotating the suction nozzle 94 by the rotation driving device 105. Correct the misalignment.

  The suction position shift generated by the suction nozzle 94 provided in the second suction head 44 and the third suction head 45 is the second drive in a state in which the movement amounts of the head units 4 and 5 in the X direction are added. Correction is performed by moving the second and third suction heads 44 and 45 in the X direction by the device 71 and moving the second and third suction heads 44 and 45 in the Y direction by the first drive device 81. . Further, in the second and third suction heads 44 and 45, when the electronic component 21 is sucked in a state of being rotated around the Z-direction axis, the suction nozzle 94 is rotated by the rotation driving device 105. Thus, the positional deviation in the rotational direction is corrected.

  In the surface mounter 1, the first driving devices 61 and 81 and the second driving device 71 described above use the first driving devices 61 and 81 and the second driving device 71 to determine the distance between the three suction nozzles 94 and the Y direction relative to the main frame 42 of each suction nozzle 94. Therefore, the electronic component 21 can be positioned at a predetermined mounting position of the printed wiring board 9 for each suction nozzle 94. That is, in the surface mounter 1, the electronic component 21 can be simultaneously mounted on the printed wiring board 9 by the three suction nozzles 94.

  Incidentally, not only when the first suction head 43 is moved in the Y direction and the second and third suction heads 44 and 45 are moved in the X direction or the Y direction in response to the suction displacement in the X direction or the Y direction, Even if the mounting positions of the electronic components 21 are not arranged in a line in the X direction at regular intervals and are adjacent to each other, they are not evenly spaced from each other in the X direction. Then, after each of the suction heads 43 to 45 is placed in one row or substantially in a row and the electronic component 21 is simultaneously sucked, the first suction head 43 is moved based on the mounting position data in the memory while moving above the printed wiring board 9. By simultaneously moving the Y direction, the second and third suction heads 44 and 45 in the X direction or the Y direction, simultaneous mounting is possible.

  Further, after the electronic component 21 is picked up, the part recognition camera 46 is moved in the X direction to pick up the tips of the suction nozzles 94 to 94 and are picked up within the imaging field of view of the component recognition camera 46. In addition, the first to third suction heads 43 to 45 are arranged in a line or substantially in a line in the X direction within a range in which the electronic component 21 and each suction nozzle enter.

  The component recognition camera 46 can also be attached to the lower surface of the support member 24 as shown in FIG. A component recognition camera 46 shown in FIG. 13 is supported by one first frame member 25 of the support member 24 via a slide mechanism 121 in the X direction. The slide mechanism 121 includes a guide rail 122 fixed to the first frame member 25, and a slider 123 that is movably supported by the guide rail 122 and fixed to the moving member 114. In adopting this configuration, the motor 111 is supported and fixed to the first frame member 25 by a bracket (not shown).

  The surface mounter 1 configured as described above can move the first suction head 43 of the two head units 4 and 5 in the Y direction by the first driving device 61, and the second and third Since the suction heads 44 and 45 can be moved in the X direction and the Y direction by the first and second drive devices 71 and 81, the suction heads 43 to 45 are simultaneously moved to a predetermined suction position or mounting position. Can be positioned. For this reason, in the surface mounter 1, the plurality of suction heads 43 to 45 are moved to the suction positions by the first and second driving devices 61, 71, 81 in a state where the head units 4 and 5 are stopped at predetermined positions. Alternatively, the electronic component can be positioned at the mounting position and simultaneously by the plurality of suction heads 43 to 45 of the head units 4 and 5 with the two head units 4 and 5 supported by the single moving device 6. 21 can be sucked or mounted.

  In the surface mounting machine described above, the printed wiring board 9 can be positioned and fixed at two locations in the middle of the conveyor 3, and the electronic components 21 are mounted on the printed wiring boards 9 in parallel by the head units 4 and 5. Since at least one of the head units 4 and 5 is mounted on the printed wiring board 9 simultaneously by at least two suction heads, the mounting efficiency is further improved.

  In only one of the two head units 4 and 5, at least one of the suction heads 43 to 45 can be moved in the Y direction by the first driving device 61, and at least one of the suction heads 43 to 45 can be moved. One of them may be movable in the X direction by the second driving device 71 or 81. In this case, even if only one suction head can be moved in both the Y direction and the X direction, each of the plurality of suction heads may be movable only in either the Y direction or the X direction. In any case, at least two electronic components 21 can be sucked or mounted at the same time. That is, even when a plurality of component positions in the component supply unit 22 are shifted in the X direction or further in the Y direction, simultaneous suction is possible, and the mounting position coordinates on the printed wiring board 9 are not only in the X direction but also in the Y direction. Even if they are different, simultaneous mounting is possible, and mounting efficiency is improved.

  In the surface mounting machine described above, the support member 24 that movably supports the two head units 4 and 5 is movable in the Y direction, but the support member 24 is fixed to the base 2. Anyway. In this case, the conveyor 3 is divided into two parts by the upstream conveyor and the downstream conveyor, and after the printed wiring board 9 is received from the conveyor between the two conveyors, a substrate table that moves in the Y direction is interposed. Anyway. After the printed wiring board 9 is carried in from the upstream conveyor, the substrate table is moved in the Y direction to the same position as the head units 4 and 5 that are fixed to the printed wiring board 9 and movable only in the X direction. In the sequential mounting of 21, it further moves in the Y direction according to the mounting position. In any of the head units 4 and 5, at least two components are simultaneously sucked by the component supply unit 22 by at least two suction heads. The head units 4 and 5 alternately move above the X-direction board, and at least one of the head units 4 and 5 simultaneously mounts at least two components on the printed wiring board 9 by at least two suction heads. Even in the surface mounting machine having this configuration, the mounting efficiency is improved.

  Further, according to the present invention, when a plurality of suction heads are arranged in a direction in which a plurality of component supply positions are arranged (first direction) and supported by the head unit 4 or 5, one row of suction heads arranged in the first direction is arranged. This is applicable not only to the case of performing the above, but also to the case of arranging a plurality of columns such as two columns or three columns by shifting the position in the Y direction.

  Further, according to the present invention, when a plurality of suction heads are arranged in a direction in which a plurality of component supply positions are arranged (first direction) and supported by the head unit 4 or the head unit 5, a row of suction heads arranged in the first direction is formed. The present invention can be applied not only to the case of arranging one row but also to the case of arranging a plurality of rows such as two rows or three rows by shifting the position in the Y direction.

  In the surface mounter 1 according to this embodiment, the component supply unit 22 includes a first tape feeder group 22A and a second tape feeder group 22B for each of the two printed wiring boards 9B and 9B. The tape feeder 22a in the position where the tape feeder groups 22A and 22B are close to each other is configured as a common tape feeder group 22C. The tape feeder 22a which has the electronic component 21 supplied to the printed wiring board 9B located in the mounting position 14b is equipped.

  For this reason, according to this embodiment, in order to equip the tape feeder 22a for each of the two printed wiring boards 9B and 9B, only one set of the tape feeders 22a of the common tape feeder group 22C is prepared. For this reason, the quantity of the tape feeders 22a can be reduced compared with the case where all the tape feeders 22a are prepared for each of the printed wiring boards 9B and 9B.

The head units 4 and 5 can be provided with four suction heads as shown in FIG. 14, and can be provided with five suction heads as shown in FIG.
In the head units 4 and 5 shown in FIG. 14, four suction heads 200 are provided inside the main frame 42 so as to be movable in the X direction and the Y direction by the first and second driving devices 71 and 81, respectively. Yes. These suction heads 200 are arranged at the corners of the main frame 41 formed in a square shape in plan view. The head units 4 and 5 according to this embodiment include two suction heads 200 and 200 supported on the front wall 51 of the main frame 42 and two suction heads 200 supported on the rear wall 52 of the main frame 42. , 200 are arranged alternately in the X direction.

  In the head units 4 and 5 shown in FIG. 15, the main frame 42 is formed in a trapezoidal shape in plan view, and a fixed suction head 201 is provided at the center of the front wall corresponding to the bottom of the trapezoid. The fixed suction head 201 has a function of moving the suction nozzle 92 up and down and a function of rotating the suction nozzle 92 about the vertical axis, and is attached to the main frame 42 in a state where movement in the X direction and the Y direction is restricted. It has been. Note that the suction head 201 may be equipped with the first drive device 61 shown in FIG. 3 and move in the Y direction with respect to the main frame 42.

  The head units 4 and 5 shown in FIG. 15 are equipped with two movable suction heads 200 on both sides with the suction head 201 as the center. These movable suction heads 200 are provided on the main frame 42 so as to be movable in the X and Y directions by the first and second driving devices 71 and 81. The head units 4, 5 according to this embodiment have two suction heads 200, 200 supported on the rear wall 52 between the three suction heads 200, 201 supported on the front wall 51 of the main frame 42. Is adopted.

When the suction head is driven by the first and second driving devices 61, 71, 81, the moving direction of the suction head can be set as shown in FIGS.
The head units 4 and 5 shown in FIG. 16A are provided with three suction heads 200 to 202. Among these suction heads, the suction head 200 located on the leftmost side in the figure is configured to move in the X direction and the Y direction, and the suction head 201 located in the center moves only in the Y direction. The suction head 202 located on the right side is configured so as not to move in either the X direction or the Y direction.

  The head units 4 and 5 shown in FIG. 16B are provided with four suction heads 200 and 201. Among these suction heads, the suction head 200 located on the leftmost side and the suction heads 200 and 200 located on the rightmost side are configured to move in the X direction and the Y direction, and two inner suction heads. 201 and 201 are configured to move only in the Y direction.

The head units 4 and 5 shown in FIG. 16C include a suction head 200 that can move in the X direction and the Y direction, and a suction head 201 that can move only in the Y direction.
Even if the head units 4 and 5 are configured as shown in FIGS. 14 to 16, the same effects as in the case of adopting the embodiment shown in FIGS.

  In the embodiment shown in FIG. 1 to FIG. 16, the example in which the direction parallel to the conveying direction of the conveyor 3 is the first direction has been described, but the first direction in the present invention is the conveyor 3. It is also possible to make the direction perpendicular to the transport direction.

It is a top view which shows the structure of the surface mounting machine which concerns on this invention. It is a side view which shows the structure of the surface mounting machine which concerns on this invention. It is a top view which shows the structure of a conveyor. It is a top view which shows the structure of a head unit. It is a rear view of a head unit. It is sectional drawing which shows the structure of a 3rd drive device. It is sectional drawing which shows the structure of a 3rd drive device. It is sectional drawing which shows the structure of a 3rd drive device. It is a longitudinal cross-sectional view of a suction head. 1 is a perspective view of a surface mounter 1 according to the present invention. It is a perspective view which expands and shows a part of head unit. It is a perspective view which shows the structure of the camera for component recognition. It is a figure which shows the form which mounted | wore the support member with the camera for component recognition. It is a top view which shows the form which comprised the head unit by four suction heads. It is a top view which shows the form which comprised the head unit by five suction heads. It is a block diagram which shows the modification of the direction which moves a suction head.

Explanation of symbols

  2 ... Base, 4, 5 ... Head unit, 6 ... Moving device, 42 ... Main frame, 43 ... First suction head, 44 ... Second suction head, 45 ... Third suction head, 61, 81 ... 1st drive device, 71 ... 2nd drive device, 94 ... Suction nozzle, 200, 201 ... Suction head.

Claims (6)

A base having a conveyor for conveying a printed wiring board;
A component supply unit having a plurality of component supply positions arranged in a predetermined first direction on the side of the conveyor;
A plurality of suction heads having suction nozzles;
A head unit that supports the plurality of suction heads side by side in the first direction;
In a surface mounter including a moving device that moves the head unit between the component suction position and the printed wiring board,
Two head units are provided on one base,
At least one of these head units includes a first driving device that moves the suction head in a second horizontal direction that intersects the first direction, and a first drive device that moves the suction head in the first direction. A surface mounter equipped with two drive units. The surface mounter according to claim 1,
A support member for supporting the two head units movably in the first direction;
A surface mounting machine configured such that the support member and the printed wiring board are relatively movable in a second direction. In the surface mounting machine according to claim 2,
A substrate table that enables the printed wiring board to move in the first direction in the middle of the conveyor,
A surface mounter in which a plurality of component supply positions are arranged on both sides of the substrate table. In the surface mounting machine according to claim 2,
A plurality of component supply positions can be configured by positioning the substrate in the middle of the conveyor so that the substrate can be positioned and fixed, and the support member can be moved in the second direction, and both head units can be moved integrally in the second direction. A surface mounting machine that enables the components picked up in (1) to be moved above the printed wiring board on which the printed wiring board is positioned. In the surface mounting machine according to claim 4,
The conveyor is a surface mounter configured such that a printed wiring board can be positioned at a first mounting position corresponding to one head unit and a second mounting position corresponding to the other head unit. In the surface mounting machine according to claim 5,
The component supply unit includes a first tape feeder group including a number of tape feeders that supply electronic components to a printed wiring board located at a first mounting position, and an electronic device connected to the printed wiring board located at a second mounting position. A second tape feeder group comprising a number of tape feeders for supplying parts,
The first tape feeder group and the second tape feeder group are tape feeders in positions close to each other as a shared tape feeder group,
The common tape feeder group is a surface mounter including a tape feeder having electronic components to be supplied to a printed wiring board located at a first mounting position and a printed wiring board located at a second mounting position.

Images