JP2008084948A - Surface mounting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To position a printed circuit board to the accurate position with respect to a pressing member for transfer even when the mounting position and the transfer position are deviated in the Y direction. <P>SOLUTION: Mounting units 3 to 6 are provided on one side and the other side in the Y direction of a base board 11. In these mounting units, the mounting position for mounting electronic components and the transfer position of the printed circuit are deviated in the Y direction. A transfer route forming member (conveyor 34) for each mounting unit supporting the printed circuit board 2 to be movable in the X direction is also provided. A substrate transfer apparatus 14 for moving the printed circuit board 2 in the transfer direction with a pawl member is also provided above a transfer route forming member located at the center in the Y direction of the base board 11. A table 32 is also provided by which the printed circuit board 2 can be moved between the mounting position and the transfer position by moving the transfer route forming member in the Y direction and the predetermined position in the Y direction of the printed circuit board is aligned with the pawl member position of the substrate transfer apparatus 14 for movement of the printed circuit board 2 to the transfer position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a surface mounter in which a plurality of mounting units are provided so as to be arranged in a direction orthogonal to a conveyance direction of a printed wiring board.

  As a conventional surface mounter of this type, there is one disclosed in Patent Document 1, for example. The surface mounter shown in Patent Document 1 has two positions located on both sides in a direction (hereinafter simply referred to as Y direction) perpendicular to the direction of conveyance of the printed wiring board (hereinafter simply referred to as X direction) in the base. A mounting unit and a substrate transfer device provided at the center of the base in the Y direction are provided.

  The mounting unit includes an electronic component supply device located at an end of the base in the Y direction, and an electronic component is moved by moving the suction head for sucking the electronic component in the X direction and the Y direction above the base. Is mounted on the printed wiring board on the substrate transfer device side from the electronic component supply device.

  The substrate transport apparatus includes two conveyors provided for each mounting unit, and a carry-in / carry-out conveyor provided at both ends of the base in the X direction so as to extend in the X direction. The conveyor for each mounting unit is positioned on one side and the other side of the base in the X direction, and each base is equipped to be movable in the Y direction. In this board conveying device, these printed circuit boards are arranged in the X direction, so that the printed wiring board can be moved from one conveyor to the other conveyor. Further, these conveyors are arranged in a line with the carry-in / carry-out conveyors so that the printed wiring board can be moved between the conveyors. The carry-in / carry-out conveyor is positioned at the center of the base in the Y direction.

  In this conventional surface mounter, electronic components are mounted in a state where the conveyor for each mounting unit on which the printed wiring board is mounted is moved to one end side in the Y direction of the base, that is, the electronic component supply device side. That is, in this mounting unit, the mounting position for mounting the electronic component is positioned at a position shifted in the Y direction with respect to the transport position of the printed wiring board.

On the other hand, as disclosed in Patent Document 2, as a substrate transport apparatus equipped in a surface mounter, there is a configuration in which a printed wiring board is moved in the transport direction by pressing a printed wiring board in a transport direction. is there. The substrate transport apparatus shown in Patent Document 2 has an apparatus main body positioned above the transport path of the printed wiring board, and the apparatus main body moves the pressing member in the transport direction and the vertical direction. It is taken.
JP 2000-198693 A Japanese Patent No. 3227881

  The inventor of the present application considers transporting a printed wiring board by a substrate transporting device disclosed in Patent Document 2 in a surface mounter that mounts electronic components by moving the printed wiring board in the Y direction from the transport position. Yes. However, since the width of the printed wiring board in the Y direction is not constant, in order to push and transport the printed wiring board by the pressing member, the printed wiring board is moved in the Y direction from the mounting position and positioned at the transport position. Problems arise. That is, it is necessary to be able to stably carry the sheet by pressing the printed wiring board with the pressing member.

  The present invention has been made to solve such a problem, and the printed wiring board is placed in the correct position with respect to the transport pressing member, even though the mounting position and the transport position are shifted in the Y direction. An object of the present invention is to provide a surface mounter capable of positioning.

  In order to achieve this object, the surface mounting machine according to the present invention is configured so that an X-direction consisting of a printed wiring board transport direction above a base of a suction head for sucking electronic components and a Y-direction orthogonal to the X-direction. And mounting the electronic component on one side and the other in the Y direction of the base, and mounting the electronic component on these mounting units. In a surface mounting machine in which the mounting position is shifted in the Y direction with respect to the transport position of the printed wiring board, a transport path forming member for each mounting unit that supports the printed wiring board to be movable in the X direction, and a base The printed wiring board, which is positioned at the center of the Y direction and above the transport path forming member and placed on the transport path forming member, is moved in the transport direction by the pressing member. By moving the board conveying device and the conveying path forming member in the Y direction, the printed wiring board is moved between the mounting position and the conveying position, and the printed wiring board is moved to the conveying position. And a table that matches a predetermined position in the Y direction of the plate with the position of the pressing member of the substrate transfer device.

  A surface mounter according to a second aspect of the present invention is the surface mounter according to the first aspect, wherein the table is provided with a fixed-side conveyor that is restricted from moving in the Y direction and the table is in the Y direction. A movable path conveyor that is movably provided to form a conveyance path forming member, the fixed conveyor is provided on one side of the table close to the electronic component supply device, and the movable conveyor is disposed on the other side of the table. Is provided.

  A surface mounter according to a third aspect of the present invention is the surface mounter according to the first or second aspect, wherein the table has a predetermined position in the Y direction of the printed wiring board that matches the position of the pressing member of the board transfer device. Is the central portion of the printed wiring board in the Y direction.

  A surface mounter according to a fourth aspect of the present invention is the surface mounter according to the first or second aspect, wherein the table has a predetermined position in the Y direction of the printed wiring board that matches the position of the pressing member of the board transfer device. Is an edge extending linearly in the Y direction in plan view of the printed wiring board.

  A surface mounter according to a fifth aspect of the present invention is the surface mounter according to the first or second aspect, wherein the table has a predetermined position in the Y direction of the printed wiring board that matches the position of the pressing member of the board transfer device. Is the part where the distance from the edge of the printed wiring board in the conveying direction to the electronic component on the printed wiring board is the longest.

  A surface mounter according to a sixth aspect of the present invention is the surface mounter according to the first or second aspect, wherein the table has a predetermined position in the Y direction of the printed wiring board that matches the position of the pressing member of the board transfer device. Is the bottom of the recess formed at the edge of the printed wiring board in the transport direction.

  A surface mounter according to a seventh aspect of the present invention is the surface mounter according to the first or second aspect, wherein the table has a predetermined position in the Y direction of the printed wiring board that matches the position of the pressing member of the board transfer device. Is the top of the convex portion protruding from the edge of the printed wiring board in the conveying direction.

  A surface mounter according to an eighth aspect of the present invention is the surface mounter according to the first or second aspect, wherein the table has a predetermined position in the Y direction of the printed wiring board that matches the position of the pressing member of the board transfer device. Is the part closest to the center of gravity of the printed wiring board.

  The surface mounter according to the invention described in claim 9 is the surface mounter according to any one of claims 1 to 8, wherein a plurality of mounting units are separated from the center in the Y direction of the base. The two mounting units adjacent to each other in the X direction are provided to one and the other in the Y direction so that they are aligned in the X direction. It is equipped so as to be positioned in a staggered pattern in plan view by shifting in the X direction.

  According to the present invention, since the predetermined position of the printed wiring board can be positioned with respect to the pressing member, the printed wiring board can always be pushed in the transport direction by the pressing member, and the transport of the printed wiring board is stabilized. Can be done.

  According to the second aspect of the present invention, the distance between the printed wiring board on the conveyor and the electronic component supply device affects the length of the printed wiring board in the Y direction by moving the printed wiring board to the mounting position by the table. Therefore, it is possible to improve the mounting efficiency.

  According to the invention described in claim 3, since the center of gravity of the printed wiring board can be pushed by the pressing member, the conveyance is further stabilized.

  According to invention of Claim 4, even if it is a case where the shape of the edge of the downstream of the conveyance direction in a printed wiring board is not flat in the whole area of a Y direction, conveyance can be performed stably.

According to the fifth aspect of the present invention, it is possible to prevent the printed wiring board from being distorted by the pressing by the pressing member and the mounting position of the electronic component from being changed before the reflow.
According to the sixth aspect of the present invention, the printed wiring board is not easily tilted during conveyance, and the printed wiring board can be stably conveyed.

According to the seventh aspect of the present invention, it is possible to prevent the printed wiring board from being distorted by the pressing by the pressing member and the mounting position of the electronic component from being changed before the reflow.
According to invention of Claim 8, when a printed wiring board is pressed and conveyed with a press member, a printed wiring board becomes difficult to incline.

According to the ninth aspect of the present invention, it is possible to dispose a part of the adjacent mounting unit in a space formed on the opposite side with respect to each mounting unit across the conveyance path of the printed wiring board. For this reason, a plurality of mounting units can be compactly equipped in the X direction.
Therefore, according to the present invention, it is possible to provide a surface mounter that is highly productive and compact.

(First embodiment)
Hereinafter, an embodiment of a surface mounter according to the present invention will be described in detail with reference to FIGS.
FIG. 1 is a plan view showing a schematic configuration of a surface mounter according to the present invention, FIG. 2 is a plan view of the surface mounter according to the present invention, and the figure is drawn with the center frame omitted. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a perspective view showing a state in which the mounting unit is mounted on the base, FIG. 5 is a perspective view showing the conveyor for conveyance, and FIG. 6 is a perspective view showing the structure of the center frame.

  FIG. 7 is a side view of the substrate transfer apparatus, FIG. 8 is a cross-sectional view showing a drive system during transfer, and FIG. 9 is a cross-sectional view showing the drive system when changing the interval between the claw members. FIG. 10 is a longitudinal sectional view of the drive unit for the substrate transport apparatus. In FIG. 10, the cable holding member is omitted. 10, the fracture position in FIG. 8 is indicated by the line VIII-VIII, and the fracture position in FIG. 9 is indicated by the line IX-IX. FIG. 11 is a longitudinal sectional view showing a part of the drive unit.

12 is an enlarged perspective view showing the drive unit of the substrate transfer apparatus, FIG. 13 is a perspective view showing the claw member and the cylinder located at the retracted position, and FIG. 14 shows the claw member and the cylinder located at the transfer position. It is a perspective view.
15 is an enlarged front view showing a supporting portion of the claw member, FIG. 16 is a side view showing a state where the claw member is moved to the retracted position, and FIG. 17 is a side view showing a state where the claw member is positioned at the transport position. It is.

  FIG. 18 is a perspective view showing a state in which the printed wiring board is conveyed by a pair of claw members. In the figure, the conveyer is omitted. 19 is a side view for explaining the interval between the claw members, FIG. 20 is a block diagram showing the configuration of the control system of the board transfer device, and FIG. 21 is a block showing the configuration of the control system of the surface mounter according to the present invention. FIG.

  FIG. 22 is a flowchart for explaining the operation of each mounting unit, FIGS. 23 to 26 are plan views for explaining the operation of the conveyor and the table, and FIG. 23 shows a state when setting the reference position. 24 shows a state in which the central portion in the Y direction of the printed wiring board is positioned below the claw member, FIG. 25 shows a state when the irregular printed wiring board is conveyed, and FIG. 26 shows different width dimensions in the Y direction. The state where the printed wiring boards are mixed is shown.

  In these drawings, the reference numeral 1 indicates a surface mounter according to this embodiment. The surface mounter 1 sends the printed wiring board 2 from the upstream end A adjacent to the device (not shown) in the previous process toward the downstream end B, and is arranged in the transport direction. Electronic components (not shown) are respectively mounted on the printed wiring board 2 by the fourth mounting units 3 to 6. A direction parallel to the transport direction is hereinafter simply referred to as an X direction, and a direction orthogonal to the transport direction is hereinafter simply referred to as a Y direction.

  As shown in FIG. 1, the surface mounter 1 according to this embodiment includes a base 11 for supporting each device described later, the four mounting units 3 to 6 described above, and an upstream end A. The carry-in device 12 for receiving the printed wiring board 2 from another adjacent device and sending it to the first mounting unit 3 located on the uppermost stream, and the printed wiring board 2 from the fourth mounting unit 6 located on the most downstream side. A carry-out device 13 for receiving and carrying it out to another device (not shown) and a substrate transfer device 14 for moving the printed wiring board 2 in the X direction between these devices are provided. As will be described in detail later, the substrate transfer device 14 is formed to extend in the Y direction as shown in FIGS. 1 and 3, and is provided above the central portion of the base 11 in the Y direction. .

  As shown in FIGS. 3 and 4, the base 11 is provided with first to sixth Y frames 16 to 21 (see FIG. 1) that protrude upward from the base upper surface 15. As shown in FIGS. 1 and 2, these first to sixth Y frames 16 to 21 are provided at six locations in the X direction on the base 11 so as to extend in the Y direction.

  Among these Y frames 16 to 21, the first Y frame 16 located on the most upstream side in the transport direction is an upper surface of the base as viewed from the upstream side in the transport direction of the printed wiring board 2, as shown in FIG. 4. 15 is formed in a gate shape straddling the central portion in the Y direction. More specifically, the first Y frame 16 connects the vertical extending portions 16a and 16b extending in the vertical direction at both ends in the Y direction and the upper ends of the vertical extending portions 16a and 16b. And an Y-direction extending portion 16c extending in the Y direction, and an opening 16d through which the printed wiring board 2 is passed is formed in the center portion in the Y direction. One end portion of a center frame 23 described later is attached to the Y-direction extending portion 16c.

  Among the first to sixth Y frames 16 to 21, the second and fourth Y frames 17 and 19 located at the second and fourth positions from the upstream side in the transport direction are as shown in FIG. The third and fifth Y frames 18 and 20 provided on one side of the base 11 in the Y direction and located third and fifth from the upstream side in the transport direction are the second and fourth The Y frames 17 and 19 are positioned on the opposite side. As shown in FIG. 3, the printed wiring board 2 is passed through one end of each of the second to fifth Y frames 17 to 20 (one end positioned above the center in the Y direction of the base upper surface 15). Recesses 22 are formed respectively. The concave portion 22 is formed in a shape in which the lower portion is cut out while leaving the upper portions of the second to fifth Y frames 17 to 20. Upper portions 17a to 20a formed in a cantilever shape by forming the concave portions 22 in these Y frames 17 to 20 are connected to a center frame 23 described later.

  Among the first to sixth Y frames 16 to 21, the sixth Y frame 21 located on the most downstream side in the transport direction is viewed from the upstream side in the transport direction of the printed wiring board 2, as shown in FIG. Thus, it is formed in a gate shape so as to straddle the central portion of the base upper surface 15 in the Y direction. More specifically, the sixth Y frame 21 connects the vertically extending portions 21a and 21b extending in the vertical direction at both ends in the Y direction and the upper ends of these vertically extending portions 21a and 21b. And an Y-direction extending portion 21c extending in the Y direction, and an opening 21d for passing the printed wiring board 2 is formed in the center portion in the Y direction. The other end portion of the center frame 23 described later is attached to the Y-direction extending portion 21c.

  As shown in FIG. 6, the center frame 23 is formed in a frame shape long in the X direction by casting. The center frame 23 according to this embodiment includes a pair of vertical walls 23a and 23a extending in the X direction, and connecting members 23b that connect the vertical walls 23a at a total of four locations including both end portions and an intermediate portion thereof. Has been. By adopting this configuration, the center frame 23 is formed with three openings 23c, 23d, and 23e that open on both the upper and lower surfaces. The vertical walls 23a, 23a are formed with mounting seats 23f for mounting on the first to sixth Y frames 16-21.

The center frame 23 is fixed to these Y frames with fixing bolts (not shown) while being placed on the first to sixth Y frames 16 to 21. By attaching the center frame 23 to the first to sixth Y frames 16 to 21 in this way, all the Y frames 16 to 21 are connected via the center frame 23.
As shown in FIG. 3, the center frame 23 is provided with a substrate transfer device 14 to be described later.

  The four mounting units 3 to 7 are formed to have the same structure except that the mounting position on the base 11 and the arrangement direction of the members are different. Therefore, here, the first mounting unit 3 located on the most upstream side will be described, and the other mounting units 4 to 6 will be assigned the same reference numerals and detailed description thereof will be omitted.

  As shown in FIGS. 2 and 3, the first mounting unit 3 includes a support device 24 for supporting the printed wiring board 2 and one side of the support device 24 (in the first mounting unit 3, , And a plurality of tape feeders 25, 25, and so on, and the electronic components are transferred from the tape feeder 25 to the printed wiring board 2 on the support device 24. And an electronic component moving device 27 for this purpose. The electronic component supply device 26 is provided on a base 11 or a carriage (not shown) removably connected to the base 11.

  As shown in FIG. 3, the support device 24 includes a pair of guide rails 31 and 31 provided on the base upper surface 15 so as to extend in the Y direction, and a table movably supported by these guide rails 31. 32, a Y-direction drive device 33 for moving the table 32 in the Y direction, a conveyor 34 provided on the table 32, and the position of the printed wiring board 2 with respect to the table 32 during mounting of electronic components. And a clamp mechanism 35 for holding.

  As shown in FIGS. 2 and 3, the Y-direction drive device 33 rotates a ball screw shaft 33a that is rotatably supported on the base upper surface 15 in a state extending in the Y direction, and rotates the ball screw shaft 33a. A motor 33b and a ball nut 33c that is screwed onto the ball screw shaft 33a and fixed to the table 32 are provided.

As shown in FIG. 3, the table 32 is separated from the transfer position located immediately below the substrate transfer apparatus 14, which will be described later, and the electronic component supply apparatus 26 side with respect to the transfer position by driving the Y-direction drive apparatus 33. Reciprocates between the mounted position. In the surface mounter 1 according to this embodiment, the tables 32 of the mounting units 3 to 6 are moved to the transport position as shown by the solid line in FIG. The conveyance path 51 (refer FIG. 1) which consists of these conveyors 34 is comprised.
Further, when the table 32 moves to the mounting position, the table 32 is positioned at a position close to the tape feeder 25.

  As shown in FIGS. 3 and 5, the conveyor 34 is rotatable to a pair of vertical members 36, 36 supported on the table 32 by support columns 32 a, and to side portions of the vertical members 36, 36 facing each other. And a pair of endless belts 37, 37. The conveyor 34 constitutes a conveyance path forming member in the present invention.

  The endless belt 37 supports both ends of the printed wiring board 2 in the Y direction, and the printed wiring board 2 is rotated by being pressed in the X direction (conveying direction) by driving a substrate conveying device 14 described later. . As a result, the printed wiring board 2 is conveyed in the X direction. In order to restrict the printed wiring board 2 from moving in the Y direction when being conveyed on the endless belts 37 and 37 in this way, the inner surfaces of the pair of vertical members 36 and 36 facing each other are shown in FIG. As shown, guide surfaces 36a, 36a are formed.

  Of the pair of vertical members 36, 36, the vertical member 36 located on the left side in FIG. 3, in other words, one side that is the electronic component supply device 26 side is fixed so as not to move to the table 32. Yes. That is, the one vertical member 36 and the endless belt 37 provided on the vertical member 36 constitute a fixed-side conveyor 34 a that is a part of the conveyor 34. In FIG. 3, the electronic component supply device 26 is drawn on both sides of the base 11 in the Y direction. However, the electronic component supply device 26 of the first mounting unit 3 having the table 32 and the conveyor 34 shown in FIG. Is located on the left side in FIG.

  As shown in FIG. 3, the other vertical member 36 of the pair of vertical members 36, 36, in other words, the vertical member 36 located on the opposite side of the electronic component supply device 26 is attached to the table 32 via a width adjusting mechanism 36b. Installed. The width adjusting mechanism 36b is for adjusting the position of the endless belt 37 provided in the other vertical member 36 in the Y direction according to the width dimension of the printed wiring board 2 in the Y direction. The other vertical member 36 is moved in the Y direction with respect to the table 32 by driving by the motor 36c (see FIG. 21). That is, the other vertical member 36 and the endless belt 37 provided on the vertical member 36 constitute a movable-side conveyor 34b that constitutes the conveyor 34 in cooperation with the fixed-side conveyor 34a.

  The width adjusting motor 36c is controlled by the motor control unit 40A of the controller 40 together with the motor 33b of the Y-direction drive device 33, as shown in FIG. The controller 40 is for controlling the operation of the surface mounting machine 1, and includes an arithmetic processing unit 40C connected to the display unit 40B, a mounting program storage unit 40D, a transport system data storage unit 40E, an external input / output unit 40F, An image processing unit 40G, a substrate transfer control unit 40H, and the like are provided.

  As shown in FIG. 5, the pair of vertical members 36, 36 are provided with a holding position sensor 38 (described later) and a substrate stop impossible position sensor 39.

  The holding position sensor 38 includes a light emitting element 38a provided at the upper end portion of the vertical member 36 of the fixed side conveyor 34a and a light receiving element 38b provided at an intermediate portion in the vertical direction of the vertical member 36 of the movable side conveyor 34b. The detection laser light 38d incident on the light receiving portion 38c of the light receiving element 38b from the light emitting element 38a is blocked by the printed wiring board 2 so that the printed wiring board 2 is detected. The position holding sensor 38 detects the position of the tip of the printed wiring board 2 conveyed on the conveyor 34. The light emitting element 38a and the light receiving element 38b are positioned at the same position and at different heights in the transport direction of the printed wiring board 2 so that the laser light 38d obliquely crosses the transport path of the printed wiring board 2. It has been. The term “oblique” means that the light emitting element 38a extends in the Y direction and is inclined downward.

  The position where the holding position sensor 38 is attached is a position where the printed wiring board 2 is placed at a predetermined holding position on the conveyor 34 and the downstream edge of the printed wiring board 2 in the conveying direction blocks the laser beam 38a. Is set to The detection result of the holding position sensor 38 is sent as detection data to a substrate transfer control unit 40H described later. The substrate transfer control unit 40H stops the transfer operation by the substrate transfer device 14 when detection data is sent from the holding position sensor 38.

  The board stop impossible position sensor 39 is configured such that the printed wiring board 2 is located between the mounting units, or between the carry-in device 12 and the first mounting unit 3 or between the fourth mounting unit 6 and the carry-out device 13. It is for detecting whether or not. The substrate stop impossible position sensor 39 has the same configuration as the holding position sensor 38. That is, the substrate stop impossible position sensor 39 includes a light emitting element 39a provided at the upper end portion of one vertical member 36 and a light receiving element 39b provided at an intermediate portion in the vertical direction of the other vertical member 36. The printed wiring board 2 is detected when the detection laser light 39d incident on the light receiving portion 39c of the light receiving element 3bb from 39a is blocked by the printed wiring board 2.

In FIG. 5, in order to clarify the purpose of use of the substrate stop impossible position sensor 39, the downstream end of the conveyor 34 positioned on the upstream side in the transport direction and the conveyor 34 positioned on the downstream side in the transport direction. It is drawn with a substrate stop impossible position sensor 39 provided only at the upstream end. However, the board stop impossible position sensors 39 are actually provided at both ends of each conveyor 34 in the transport direction.
The detection result of the substrate stop impossible position sensor 39 is sent as detection data to a substrate transfer control unit 40H described later. The substrate transport control unit 40H keeps the Y-direction drive device 33 and a Y-direction drive device 54, which will be described later, stopped while the substrate stop position impossible sensor 39 detects the printed wiring board 2.

  The transport of the printed wiring board 2 using the conveyor 34 described above is performed in a state where the tables 32 of the mounting units adjacent to each other are moved to the transport position. Thus, in the state where the two tables 32 are positioned at the transport position, as shown in FIG. 5, two sets of conveyors 34 and 34 are arranged in a line. The movement of the table 32 to the transfer position is performed, for example, so that the center in the Y direction of the printed wiring board 2 supported by the conveyor 34 is as close as possible to the position immediately below the center in the Y direction of the substrate transfer device 14. Here, the operation of the table 32 and the conveyor 34 when the printed wiring board 2 is positioned in the Y direction with respect to the board transport device 14 will be described with reference to FIGS. 23 to 26.

  In the surface mounter 1 according to this embodiment, when the manufacturing time or operation time reaches a predetermined time, as shown in FIG. 23, the mounting units 3 to 6 (stages A to D) and the carry-in device 12 (carry-in stage) and carry-out device 13 (carry-out stage), the width dimension of the printed wiring board 2 is assumed to be 0, so that the fixed-side conveyor 34a and the movable-side conveyor 34b are positioned directly below the substrate transfer device 14. Then, the table 32 and the width adjusting mechanism 36b are operated. The position in the Y direction of the table 32 at this time is stored in the transport system data storage means 40E (FIG. 21) as reference position (Pstd) data.

  Then, when transporting the printed wiring board 2, as shown in FIG. 24, the movable conveyor 34b is moved relative to the fixed conveyor 34a in accordance with the width W of the printed wiring board 2, and the reference position (Pstd) The position separated in the Y direction by ½ of the width W of the printed wiring board 2 is stored in the transport system data storage means 40E as the transport line position. The movable conveyor 34b is moved by operating the width adjusting mechanism 36b. In each stage, by moving the table 32 to the transfer line position described above, the center of the printed wiring board 2 in all stages A to D is positioned directly below the center of the substrate transfer apparatus 14 in the Y direction. .

  That is, in the surface mounter 1 according to this embodiment, the center of the printed wiring board 2 in the Y direction can be directly below the center of the substrate transport device 14 even if the printed wiring board 2 having a different size in the Y direction is used. It will be as close as possible.

  The shape of the printed wiring board 2 may be irregular as shown in FIG. In this case, as indicated by an arrow P1 in the figure, when the center of the printed wiring board 2 in the width direction is pushed by the board carrying device 14, the inclined surface 2a of the printed wiring board 2 is pushed and stable conveyance is performed. There is a risk that it will not be possible. For this reason, in this case, as indicated by an arrow P2 in the drawing, at least the pressing moving member (first, third, fifth, and seventh described below) at the upstream edge of the printed wiring board 2 in the transport direction. It is desirable that the substrate transfer device 14 pushes a portion 2b that extends linearly in the Y direction with a width that is wider than the width with which the ninth moving members 61, 63, 65, 67, and 69 abut. Thus, the substrate can be stably conveyed by overcoming the driven resistance of the conveyor 34 by the pressing force of each claw member 71.

  That is, in this case, as shown in FIG. 25B, the length from the center of the printed wiring board 2 in the Y direction to the target position is set as an offset value (Poff), and the conveyance line position is corrected by the offset value. To do. In this case, the transport line position of each stage is Pstd + W / 2 + (−) Poff. The printed wiring board 2 is slowly accelerated by a pressing moving member (first, third, fifth, seventh and ninth moving members 61, 63, 65, 67 and 69 described below). When the printed circuit board is suddenly stopped at a predetermined position after the predetermined conveyance speed is reached, the printed wiring board 2 has a braking moving member (second, fourth, A large braking force for overcoming the inertia force of the conveyor 34 and the printed wiring board 2 is applied from the claw members 71 of the sixth, eighth, and tenth moving members 62, 64, 66, 68, and 70). Become.

In this case, at least the braking moving member (second, fourth, sixth, eighth, and tenth moving members 62, 64, 66, and 68 described below) at the downstream edge of the printed wiring board 2 in the transport direction. , 70, and a portion 2c that is wider than the width with which the claw members 71) abut on each other and linearly extend in the Y direction, are desirably pushed by the substrate transport device 14 and stopped. For this reason, each stage is moved and adjusted in the Y direction so that each claw member 71 and each part 2c of the substrate transport apparatus 14 coincide with each other. Thereby, the conveyance stop of the printed wiring board 2 can be performed stably.
In the printed wiring board 2 shown in FIG. 25A, the part 2b and the part 2c coincide with each other in the Y direction, so that both pressing for conveyance and braking for stopping conveyance can be stably performed.

  On the other hand, when the lot of the printed wiring board 2 changes, the width W of the printed wiring board 2 may also change. In this case, the position / width of the conveyor 34 is sequentially changed from the stage where the production is completed. For example, as shown in FIG. 26A, when a printed wiring board 2 having a relatively wide width (W1) is changed to a printed wiring board 2 having a relatively narrow width (W2), the printed wiring board 2 having a width W1. The movable conveyor 34b is moved from the stage A where mounting is completed to the width of the next printed wiring board 2, and the conveyance line position is changed. As will be described later, the carry-in device 12 and the carry-out device 13 are also provided with a table, a fixed-side conveyor, a movable-side conveyor, and the like, and these members also operate in accordance with the operations of the stages A to D.

  In mounting electronic components on the printed wiring board 2 supported by the conveyor 34, the table 32 is moved in the Y direction so that the fixed conveyor 34a approaches the tape feeder 25, and the table 32 is moved to the mounting position. Perform in a positioned state. By moving the table 32 in this manner, the printed wiring board 2 can always be positioned at a position close to the tape feeder 25 even when the printed wiring board 2 having a different size in the Y direction is used.

  As shown in FIG. 3, the clamp mechanism 35 pushes up the pair of pressure receiving members 35 a and 35 a located above both ends in the Y direction of the printed wiring board 2 and the printed wiring board 2 together with the endless belt 37 from below. The pressure receiving members 35a and 35a are configured to be pushed up to the pressure receiving members 35a and 35a. In FIG. 3, 35 b is a device that rises and supports the back surface of the printed wiring board 2. Of the pair of pressure receiving members 35a, 35a, the pressure receiving member 35a located on the opposite side of the tape feeder 25 is supported by the main table 32 via the width adjusting mechanism 36b described above, and the movable conveyor 34b. The vertical member 36 is moved in the Y direction in accordance with the size of the printed wiring board 2.

  As shown in FIGS. 2 to 4, the electronic component moving device 27 of the first mounting unit 3 is a pair provided at the upper ends of the first and third Y frames 16 and 18 so as to extend in the Y direction. The first guide rails 41 and 41, and a support member 42 that is horizontally mounted between the first guide rails 41 and 41, extends in the X direction, and is movably supported by the first guide rail 41. A pair of Y-direction drive devices 43 and 43 for driving the support member 42, a second guide rail 44 provided on the support member 42 and extending in the X direction, and movable to the second guide rail 44 A supported head unit 45, an X-direction drive device 46 for driving the head unit 45, and a plurality of suctions supported by the head unit 45 through a lifting device 47 (see FIG. 3) so as to be lifted and lowered independently. F It is constituted by such de 48. As shown in FIG. 3, the suction head 48 includes a suction nozzle 48 a that sucks electronic components, and a rotation drive device 48 b that rotates the suction nozzle 48 a about the vertical axis.

  As shown in FIGS. 2 and 4, the Y-direction drive device 43 for driving the support member 42 includes a motor 43a fixed to one end of the first and third Y frames 16, 18, and one end to the motor 43a. And a ball screw shaft 43b that extends in the Y direction and is rotatably supported by the Y frames 16 and 18, and a ball nut 43c that is screwed to the ball screw shaft 43b and fixed to the support member 42 ( (See FIG. 3).

  The head unit 45 is provided with a substrate recognition camera 49 (see FIG. 2) for picking up an image of a fiducial mark (not shown) of the printed wiring board 2 from above and detecting the position of the printed wiring board 2. It has been. As shown in FIG. 21, the board recognition camera 49 is connected to an image processing unit 46G of the controller 40. In addition to the camera 49, the image processing unit 46G is connected with a component recognition camera 50 for imaging the electronic component sucked by the suction nozzle from below.

  As shown in FIGS. 2 and 4, the X-direction drive device 46 includes a motor 46a fixed to one end portion in the X direction of the support member 42, and one end portion connected to the motor 46a and extending in the X direction. The ball screw shaft 46b is rotatably supported by the support member 42, and a ball nut (not shown) fixed to the head unit 45 and screwed to the ball screw shaft 46b.

The electronic component moving device 27 having the Y direction driving device 43 and the X direction driving device 46 moves the suction head 48 in the X direction and the Y direction so that the electronic component is printed from the tape feeder 25 at the mounting position. Transferred onto the wiring board 2.
Further, although not shown, the head unit 45 of the electronic component moving device 27 includes an imaging device for board imaging for detecting the position of the printed wiring board 2 positioned at the mounting position with respect to the base 11; A component imaging device for detecting the position of the electronic component sucked by the suction nozzle 48a relative to the suction nozzle 48a is provided. Note that this component imaging device can also be provided on the base 11.

  As shown in FIGS. 1 and 2, the four mounting units 3 to 6 configured in this way are arranged in a staggered pattern on the base 11 from the upstream side to the downstream side in the transport direction in plan view. It is mounted with. More specifically, as shown by the solid line in FIG. 1, these four mounting units are arranged so that the conveyors 34 are in a state where the conveyors 34 (printed wiring boards 2) of the respective support devices 24 are moved to the transfer position. It is arrange | positioned on the base 11 so that it may be located in the same position of a direction (aligned in a line in a X direction).

  The conveyors 34 of the mounting units 3 to 6 are provided at positions close to each other in the X direction in a state where they are positioned at the transport position. That is, the printed wiring board 2 mounted on these conveyors 34 is directly moved from the upstream conveyor 34 to the downstream conveyor 34 by being pushed from the upstream side in the transport direction. The movement of the printed wiring board 2 is performed by a substrate transfer device 14 described later.

  In the surface mounter 1 according to this embodiment, as shown in FIG. 1, the X in the center portion in the Y direction of the base 11 is moved by the conveyor 34 of each of the mounting units 3 to 6 moved to the transport position as described above. A conveyance path 51 extending in the direction is configured.

Further, in a space formed on the opposite side of the tape feeder 25 across the conveyance path 51 in each mounting unit 3 to 6, a part of other mounting units (Y frames 17 to 20 and the electronic component moving device 27). Y-direction drive device 43, etc.) are positioned.
In addition, the Y direction driving devices 43 and 43 adjacent to each other in the first mounting unit 3 and the third mounting unit 5 are mounted on the third Y frame 18. Similarly, the Y direction driving devices 48 adjacent to each other in the second mounting unit 4 and the fourth mounting unit 6 are mounted on the fourth Y frame 19.

  As shown in FIG. 2, the carry-in device 12 and the carry-out device 13 are provided on the base upper surface 15 of the base 11 so as to be movable in the Y direction by the same support structure as the table 32 of each of the mounting units 3 to 6 described above. The table 52, a conveyor 53 mounted on the table 52, and a Y-direction drive device 54 for moving the table 52 in the Y direction. The Y-direction drive devices 54 of the carry-in and carry-out devices 12 and 13 are separated from the conveyance position (the position of the table 52 shown in FIG. 2) located on the conveyance path 51 and downward from the conveyance path 51 in FIG. A configuration is adopted in which the table 52 is moved between the loading and unloading positions.

  As shown in FIG. 2, the conveyor 53 of the carry-in and carry-out devices 12 and 13 rotates the endless belts 55 and 55 that support both ends of the printed wiring board 2 in the Y direction, and these endless belts 55 and 55. Drive device (not shown). Similarly to the conveyor 34 of the mounting units 3 to 6, this conveyor 53 is also composed of a fixed side conveyor 53a and a movable side conveyor 53b. The movable conveyor 53b is attached to the table 52 via a width adjusting mechanism (not shown) so that the position in the Y direction can be changed according to the width of the printed wiring board 2. Although not shown, the holding position sensor 38 and the board stop impossible position sensor 39 are also provided on the conveyor 53 of the loading / unloading devices 12 and 13 in the same manner as the conveyor 34 of the first to fourth mounting units 3 to 6. Is provided.

  Although not shown, an intermittent clutch is interposed in the power transmission system between the endless belts 55 and 55 and the driving device. That is, in the state where the printed wiring board 2 is sent to the carry-in device 12 and the first to fourth mounting units 3 to 6, these five printed wiring boards 2 are mounted on the substrate transfer device 14 by one pitch (mounting). In the case of sending only the interval between the units, the intermittent clutch is set in a disconnected state in which power is not transmitted so that the conveyor 53 of the carry-in / out devices 12 and 13 can freely rotate. On the other hand, when the carry-in device 12 receives the printed wiring board 2 from the device that performs the pre-process and when the carry-out device 13 carries the printed wiring board 2 to the device that performs the post-process, the intermittent clutch is brought into the connected state and driven by the driving device. The conveyor 53 of the carry-out device 12 and the conveyor 53 of the carry-out device 13 are rotated.

The conveyor 53 of the carry-in device 12 is positioned at the transfer position so that the printed wiring board 2 can directly move between the conveyor 53 of the first mounting unit 3 and the conveyor 53 of the carry-in device 12 at the transfer position. It is disposed at a position close to the conveyor 34 in the X direction.
The conveyor 53 of the carry-out device 13 is positioned at the transfer position so that the printed wiring board 2 can directly move between the conveyor 53 of the fourth mounting unit 6 in the state where the conveyor 53 is positioned at the transfer position. It is disposed at a position close to the conveyor 34 in the X direction.

  As shown in FIG. 1, the carry-in device 12 is configured to be connected to a device such as a printing machine that performs a pre-process while the conveyor 53 is moved to the carry-in position, and the carry-out device 13 is a conveyor. It is configured to be connected to a device that performs a post process while 53 is moved to the carry-out position.

As shown in FIGS. 7 and 10, the substrate transfer device 14 includes first to tenth moving members 61 to 70 located below the center frame 23, and is provided on these moving members 61 to 70. The printed wiring board 2 is conveyed in the X direction by the claw member 71 that is provided. In this embodiment, the claw member 71 constitutes a pressing member in the present invention.
More specifically, as shown in FIG. 10, the substrate transfer device 14 includes a drive unit 72 fixed on the center frame 23 in a state of being placed on the center frame 23, and an opening 23c in the center frame 23. And the first, third, fifth, seventh and ninth moving members 61 and 63 which are attached to the lower end of the transmission mechanism 73 and move integrally therewith. , 65, 67, 69 and the second, fourth, sixth, eighth and tenth moving members 62, 64, 66, 68, 70 that move integrally with respect to the first moving member 61. And a substrate transfer control unit 40H (see FIG. 20) for controlling the operation of the moving members 61 to 70. The board | substrate conveyance apparatus 14 by this embodiment conveys five printed wiring boards 2 simultaneously by the 1st-10th moving members 61-70 mentioned above.

  As shown in FIGS. 10 and 12, the drive unit 72 is fixed to a vertical wall 23a located on one side of the center frame 23 in the Y direction (upper side in FIG. 1, right side in FIG. 10). A support 74 formed such that the length in the X direction of the portion protruding above the frame 23 is substantially the same as the length of the opening 23c in the X direction, and extends on the one side of the support 74 in the X direction. And a plate-like first drive member 77 supported by the guide rail 75 via a slider 76 so as to be movable. The slider 76 is fixed to the first drive member 77. The length of the guide rail 75 in the X direction is substantially the same as that of the support body 74, and the length of the first drive member 77 in the X direction is approximately 1 of the portion of the support body 74 that protrudes above the center frame 23. The length is / 2.

  The support 74 penetrates the first support 74a having a support plate 78a extending so as to vertically penetrate the opening 23c of the center frame 23 and the opening 23d of the center frame 23 in the vertical direction. A second support 74b having a support plate 78b (see FIG. 11) extending in a similar manner, and a third support plate 78c (see FIG. 11) extending in a vertical direction through the opening 23e of the center frame 23. The support 74c and the base 74d (see FIG. 10) projecting above the center frame 23. The length of the first support 74a in the X direction is substantially the same as the length of the opening 23c in the X direction. The length of the second support 74b in the X direction is substantially the same as the length of the opening 23d in the X direction, and the length of the third support 74c in the X direction is the opening 23e. The length in the X direction is substantially the same.

  The first support 74a (the support plate 78a) is fastened together with the base 74d of the support 74 together with the bolt 80 on the upper surface of the vertical wall 23a, and the lower end extends from one end to the other end of the center frame 23. It extends in the X direction so as to extend, and protrudes below the center frame 23. A guide rail 79a extending in the X direction is provided on the side surface of the portion of the support plate 78a that protrudes downward from the center frame 23.

As shown in FIG. 12, the first drive member 77 is connected to a ball screw type transport drive device 81 provided on the support body 74, and the support body is driven by the transport drive device 81. 74 in the X direction.
The conveying drive device 81 is screwed onto the ball screw shaft 82 and a ball screw shaft 82 rotatably supported by a support 74, a motor 83 connected to one end of the ball screw shaft 82, and the ball screw shaft 82. A ball nut 84 (see FIG. 8) fixedly supported on the upper portion of the first drive member 77 is used.

  As shown in FIGS. 9 to 12, one side surface of the first driving member 77 has a length that is approximately ½ of the length of the first support 74 a in the X direction in the X direction. An extending guide rail 85 is provided, and the second drive member 91 is movably supported in the X direction via the guide rail 85 and a slider 86 movably supported by the guide rail 85. . The slider 86 is fixed to the second drive member 91. The second driving member 91 is connected to a ball screw type interval changing drive device 92 provided on the first driving member 77, and the first driving member is driven by the interval changing drive device 92. 77 in the X direction.

The interval changing drive device 92 includes a ball screw shaft 93 rotatably supported by the first drive member 77, a motor 94 connected to one end of the ball screw shaft 93, and a screw on the ball screw shaft 93. And a ball nut 95 (see FIG. 9) fixed to and supported by the upper portion of the second drive member 91.
The first driving member 77 and the second driving member 91 are integrally moved in the X direction with respect to the support 74 by driving by the transport driving device 81. Further, the second drive member 91 moves in the X direction with respect to the first drive member 77 by driving by the interval changing drive device 92.

  As shown in FIGS. 8 to 10, the transmission mechanism 73 includes a first arm 101 extending downward from the lower end of the first drive member 77 in the opening 23 c of the center frame 23, and the first arm 101. A first driven member 102a connected to the lower end portion of the arm 101 and extending in the X direction, and a second arm 103 (lowering from the lower end portion of the second drive member 91 in the opening 23c of the center frame 23) 9) and a second driven member 104a connected to the lower end portion of the second arm 103 and extending in the X direction.

As shown in FIG. 10, the first driven member 102a is movably supported by a guide rail 79a of the support plate 78a via a slider 105a. A guide rail 106a is provided on one side of the first driven member 102a (the lower side in FIG. 1 and the left side in FIG. 10).
The second driven member 104a is movably supported by the guide rail 106a via a slider 107a.

The first moving member 61 and the third moving member 63 are fixed to the lower end of the first driven member 102a so as to be separated from each other in the X direction.
The second moving member 62 and the fourth moving member 64 are fixed to the lower end of the second driven member 104a so as to be separated from each other in the X direction.

The other moving members 65 to 70 are supported by the second support 74b and the third support 74c as shown in FIG. That is, as shown in FIG. 11, the second support body 74 b includes a support plate 78 b that extends through the opening 23 d of the center frame 23 in the vertical direction.
The length of the support plate 78b in the X direction is substantially the same as the length of the opening 23d in the X direction, and is fixed to the upper surface of the vertical wall 23a by a bolt 80. The lower end of the support plate 78b is the center frame 23. It protrudes downward.

  A guide rail 79b extending in the X direction is provided on a side surface of a portion of the support plate 78b protruding downward from the center frame 23. A first driven member 102b is movably supported by the guide rail 79b via a slider 105b. The first driven member 102b is connected to the first driven member 102a by a joint (not shown) that can be attached to and detached from the first driven member 102a.

A guide rail 106b is provided on one side of the first driven member 102b (the lower side in FIG. 1 and the left side in FIG. 11). A second driven member 104b is movably supported by the guide rail 106b via a slider 107b. The second driven member 104b is connected to the second driven member 104a by a joint (not shown) that can be attached to and detached from the second driven member 104a.
A fifth moving member 65 is connected and fixed to the lower end of the first driven member 102b, and a sixth moving member 66 is connected and fixed to the lower end of the second driven member 104b.

Further, as shown in FIG. 11, the third support 74 c includes a support plate 78 c that extends through the opening 23 e of the center frame 23 in the vertical direction.
The length of the support plate 78c in the X direction is substantially the same as the length of the opening 23e in the X direction, and is fixed to the upper surface of the vertical wall 23a by a bolt 80. The lower end of the support plate 78c is the center frame 23. It protrudes downward.

  A guide rail 79c extending in the X direction is provided on a side surface of a portion of the support plate 78c that protrudes downward from the center frame 23. A first driven member 102c is movably supported on the guide rail 79c via a slider 105c. The first driven member 102c is connected to the first driven member 102b by a joint (not shown) that can be attached to and detached from the first driven member 102b.

A guide rail 106c is provided on one side of the first driven member 102c (the lower side in FIG. 1 and the left side in FIG. 11). A second driven member 104c is movably supported on the guide rail 106c via a slider 107c. The second driven member 104c is connected to the second driven member 104b by a joint (not shown) that can be attached to and detached from the second driven member 104b.
A seventh moving member 67 and a ninth moving member 69 are connected and fixed to the lower end of the first driven member 102c while being spaced apart from each other in the X direction. An eighth moving member 68 and a tenth moving member 70 are connected and fixed to the lower end of the second driven member 104c while being spaced apart from each other in the X direction.

  In this embodiment, the distance changing drive device 92, the guide rail 85, the slider 86, the second drive member 91, the second arm 103, and the second driven members 104a to 104c. The guide rails 106a to 106c, the sliders 107a to 107c, and the like constitute an interval changing device.

  As shown in FIGS. 13 to 15, the first to tenth moving members 61 to 70 are support brackets attached to the lower ends of the first driven members 102 a to 102 c or the second driven members 104 a to 104 c. 111, a support member 111a provided on the support bracket 111 so as to protrude downward, the claw member 71 supported on the support member 111a so as to be swingable by a support shaft 112, and the claw member 71. The cylinder 113 for moving is comprised.

  As shown in FIG. 15, the claw member 71 is attached to the tip of a lever 71a as a claw member main body. The assembly composed of the claw member 71 and the lever 71a is formed in a rod shape, and is swingably supported by the support bracket 111 by a support shaft 112 penetrating the central portion in the longitudinal direction. The support shaft 112 according to this embodiment penetrates the lever 71a so as to be rotatable. That is, the claw member 71a swings about the support shaft 112 as the lever 71a rotates (swings) with respect to the support shaft 112.

  The support shaft 112 is attached so that the axial direction is oriented in the Y direction. That is, as shown in FIGS. 14 and 17, the claw member 71 is between a position where one end portion is directed downward and a position where one end portion is directed horizontally as shown in FIGS. 13 and 16. Can swing. A cylinder 113 described later is connected to the other end of the claw member 71. The claw member 71 swings as described above by driving the cylinder 113.

  The position of the claw member 71 when the claw member 71 swings so that one end portion of the claw member 71 is directed downward is hereinafter simply referred to as a transport position, and the claw member 71 is arranged so that the one end portion is oriented in the horizontal direction. The position of the claw member 71 when it is swung is hereinafter simply referred to as a retracted position. As shown in FIG. 17, the length of the claw member 71 is such that the tip of the claw member 71 is positioned below the printed wiring board 2 on the conveyors 34 and 53 when the claw member 71 is positioned at the transport position. Is formed.

  The cylinder 113 is an air cylinder, and is provided at a position adjacent to the claw member 71 in a state where the axial direction is in the X direction, as shown in FIGS. 16 and 17. The tip of the piston rod 113a of the cylinder 113 is rotatably connected to the end of the lever 71a opposite to the claw member 71.

  The connecting portion between the piston rod 113a and the lever 71a has a structure in which a slider shaft 114 parallel to the support shaft 112 is passed through the lever 71a, and the tip end portion of the piston rod 113a is rotatably fitted to the slider shaft 114. Has been adopted. Both ends of the slider shaft 114 protrude outside the support member 111a through a long hole 115 formed in the support member 111a that supports the support shaft 112. The long hole 115 is formed so as to extend in parallel with the moving direction of the piston rod 113a.

  A slider 116 slidably fitted in the elongated hole 115 is attached to both ends of the slider shaft 114. Further, the connecting portion between the slider shaft 114 and the lever 71a has a structure in which the slider shaft 114 is inserted into a long hole in the radial direction from the support shaft 112 formed in the lever 71a, and the piston rod 113a. At the same time, the slider shaft 114 moves in parallel along the elongated hole 115 so that the lever 71 a and the claw member 71 can swing around the support shaft 112.

  By inserting (retracting) the piston rod 113a connected to the claw member 71 into the cylinder body 113b in this manner, the claw member 71 swings to the retracted position as shown in FIGS. Further, when the piston rod 113a protrudes (advances) from the cylinder main body 113b from this state, the claw member 71 swings to the conveying position directed downward as shown in FIGS.

As shown in FIGS. 13 to 15, an optical sensor 117 is provided at a portion of the support bracket 111 adjacent to the claw member 71. Although not shown, the sensor 117 is a reflective type having an LED and an image sensor. The claw member 71 swings from the retracted position to the transport position, so that the tip of the claw member 71 is finally moved. It is detected whether or not the printed wiring board 2 is located at the moving part. More specifically, the LED emits illumination light 117a obliquely downward as shown in FIGS. The illumination light 117a is emitted toward the portion where the tip of the claw member 71 is located when the claw member 71 swings to the transport position. When the printed wiring board 2 stops at a front side or a rear side from a predetermined stop position for some reason and blocks the illumination light 117a, the imaging element receives the reflected light.
The detection result of the reflection type sensor 117 composed of this imaging device is sent as detection data to the substrate transport control unit 40H.

  Position sensors 118 for detecting the position of a piston (not shown) are provided at both ends of the cylinder 113, respectively. Although not shown, the position sensor 118 is configured to detect a change in the magnetic field caused by the movement of the magnet embedded in the piston of the cylinder 113 together with the piston. The detection results of these position sensors 118 are sent as detection data to the substrate transport control unit 40H. The switching between forward and backward movement of the cylinder 113 is performed by the substrate transport control unit 40H opening and closing an electromagnetic valve provided in a pneumatic circuit (not shown) of the cylinder 113.

  The claw member 71 and the cylinder 113 are the first, third, fifth, seventh, and ninth movements that are located at the odd number of the ten moving members 61 to 70 from the upstream side in the conveyance direction. The members 61, 63, 65, 67, and 69 are attached to the first driven members 102 a, 102 b, and 102 c so that the cylinder 113 is located on the downstream side in the transport direction with respect to the claw member 71. The claw members 71 of these moving members swing from the retracted position to the transport position, thereby approaching the printed wiring board 2 from the rear side (upstream side) in the transport direction.

  The second, fourth, sixth, eighth, and tenth moving members 62, 64, 66, and 68 positioned from the upstream in the transport direction to the even number of the ten moving members 61 to 70. , 70 are attached to the second driven members 104a, 104b, 104c so that the cylinder 113 is positioned on the upstream side of the claw member 71 in the transport direction. The claw members 71 of these moving members come close to the printed wiring board 2 from the front side (downstream side) in the transport direction by swinging from the retracted position to the transport position.

Of the first to tenth moving members 61 to 70, the first moving member 61 and the second moving member 62 cooperate with each other to transfer the printed wiring board 2 from the carry-in device 12 to the first mounting unit 3. The 1st conveyance unit 121 (refer FIG. 20) is conveyed.
Further, the third moving member 63 and the fourth moving member 64 cooperate with each other to transport the printed wiring board 2 from the first mounting unit 3 to the second mounting unit 4. Is configured. Similarly, the fifth moving member 65 and the sixth moving member 66 cooperate with each other to convey the printed wiring board 2 from the second mounting unit 4 to the third mounting unit 5. A transport unit 123 is configured.

  The seventh moving member 67 and the eighth moving member 68 constitute a fourth transport unit 124 that cooperates with each other to transport the printed wiring board 2 from the third mounting unit 5 to the fourth mounting unit 6. is doing. The ninth moving member 69 and the tenth moving member 70 constitute a fifth transport unit 125 that transports the printed wiring board 2 from the fourth mounting unit 6 to the carry-out device 13 in cooperation with each other. . As shown in FIGS. 16 and 17, the pair of claw members 71 and 71 provided in the first to fifth transport units 121 to 125 are printed by swinging from the retracted position to the transport position. The wiring board 2 is moved to such a position as to be sandwiched from both sides in the transport direction.

  The distance between the pair of moving members constituting each of the transport units (the distance between the front contact member and the rear contact member) is set in accordance with the length of the printed wiring board 2 as shown in FIG. Has been. That is, this interval (indicated by the symbol L in the figure) is set to a length obtained by adding a length L1 in the transport direction of the printed wiring board 2 and a predetermined interval L2. The interval L2 is set to about 1 mm in this embodiment.

  This interval L is conveyed by the driving device 92 for changing the interval to move the moving members 62, 64, 66, 68, 70 on the rear side in the conveying direction to the other moving members 61, 63, 65, 67, 69. By moving in the direction (X direction), the printed wiring board 2 to be conveyed is adjusted to the length in the conveying direction. When the printed wiring board 2 is transported by the transport units 121 to 125 described above, all the moving members are moved in the transport direction by driving by the transport driving device 81.

As shown in FIG. 20, the substrate transfer control unit 40H includes a substrate presence / absence determination unit 131, a movement direction setting unit 132, an interval setting unit 133, a transfer stroke setting unit 134, a stop unit 135, a cylinder advance / And reverse switching means 136.
The board presence / absence judging means 131 judges whether or not the printed wiring board 2 is correctly placed on the respective conveyors 34 and 53 provided in the surface mounter 1. This determination is made based on the detection results of the holding position sensor 38 and the board stop impossible position sensor 39 provided on the conveyors 34 and 53. For example, when the printed wiring board 2 is not located where the printed wiring board 2 should be located, the substrate presence / absence judging means 131 judges that there is an abnormality and stops the surface mounter 1.

  The moving direction setting means 132 is for setting the direction of rotation of the conveying drive motor 83, and when the printed wiring board 2 is conveyed by the first to tenth moving members 61 to 70, the motor 83 is used. For example, rotate forward. Further, when the first to tenth moving members 61 to 70 are returned to the initial positions after the printed wiring board 2 is transported, the transport direction setting means 132 is operated by a cylinder forward / backward switching means 136 (to be described later). After all the claw members 71 of the moving members 61 to 70 are swung to the retracted position, the motor 83 is rotated in the direction opposite to that during conveyance.

The interval setting means 133 sets an interval between the pair of claw members 71 and 71 of the first to fifth conveyance units 121 to 125 according to the length L1 in the conveyance direction of the printed wiring board 2 to be conveyed. The interval is set by rotating the motor 94 of the interval changing drive device 92. The interval setting means 133 is provided below the claw member 71 by a reflective sensor 117 provided in the vicinity of the claw member 71 (at a position where the claw member 71 interferes with the claw member 71 when the claw member 71 swings to the transport position). When the printed wiring board 2 is detected, the claw member 71 is rotated so that the motor 83 of the conveying drive device 81 or the motor 94 of the interval changing drive device 92 is rotated so that the claw member 71 is separated from the printed wiring board 2 in plan view. Interference between the member 71 and the printed wiring board 2 is avoided.
The conveyance stroke setting means 134 sets the conveyance stroke (movement distance) at the time of conveyance of each moving member according to the interval between the first to fourth mounting units 3 to 6.

  The stopping means 135 is for stopping the motor 83 of the transport driving device 81 that rotates when the printed wiring board 2 is transported, and is configured to gradually decrease the rotational speed of the motor 83 when stopped. The stopping means 135 according to this embodiment performs the negative acceleration generated when the rotational speed of the motor 83 is decreased to a predetermined magnitude when the motor 83 is stopped as described above. The predetermined negative acceleration is set to a maximum size at which an electronic component already mounted on the printed wiring board 2 does not move due to inertia. By setting the negative acceleration in this way, the printed wiring board 2 can be stopped as quickly as possible while preventing the electronic component from moving due to inertia.

  The cylinder forward / reverse switching means 136 operates each cylinder 113 of the first to tenth moving members 61 to 70 by a pneumatic valve control device (not shown) before the motor 83 rotates forward, The member 71 is swung to the transport position. Further, the cylinder forward / reverse switching means 136 operates the cylinders 113 of the first to tenth moving members 61 to 70 by a pneumatic valve control device (not shown) before the motor 83 is reversed. The claw member 71 is swung to the retracted position.

  In the surface mounting machine 1 configured as described above, the printed wiring board 2 sent from the device in the previous process is transported from the carry-in position to the transport position on the transport path 51 by the movement of the table 52 of the carry-in device 12. The That is, the conveyor 53 provided on the table 52 of the carry-in device 12 is arranged in a line with the conveyor 34 of the first mounting unit 3 located at the transfer position directly below the substrate transfer device 14. Move. At this time, the first to fifth transport units 121 to 125 of the substrate transport apparatus 14 are moved to the initial positions in the transport direction after each claw member 71 swings to the retracted position. At this time, the width of the conveyor 34 of the first mounting unit 3 is adjusted in advance so as to match the size of the printed wiring board 2 in the Y direction, and the center of the width direction (Y direction) is the center of the carry-in device 12. It is positioned in the Y direction by the Y direction driving device 33 so as to coincide with the center of the conveyor 53 in the width direction.

  Thus, after preparation for conveyance by the conveyors 34 and 53 is completed, it is confirmed by the reflective sensor 117 on the claw member 71 side that the printed wiring board 2 is not located below the claw member 71, and the first and first The pair of claw members 71 of the two moving members 61 and 62 are swung to the transport position. At this time, as shown in FIGS. 16 and 17, the claw members 71 swing so as to change from a substantially horizontally extending state to a downwardly extending state.

  That is, the claw member 71 of the first moving member 61 is located on the upstream side in the transport direction with respect to the printed wiring board 2 and swings from the retracted position directed toward the upstream side in the transport direction to the transport position directed downward. Move. On the other hand, the claw member 71 of the second moving member 62 is located on the downstream side in the transport direction with respect to the printed wiring board 2 and swings from the retracted position directed to the downstream side in the transport direction to the transport position directed downward. Move. As the two claw members 71 swing in this manner, the claw member 71 is positioned at a position where the printed wiring board 2 is sandwiched from both sides in the transport direction.

  As described above, these claw members 71 approach the printed wiring board 2 from the upstream side and the downstream side in the transport direction. For this reason, in this board transfer device 14, even if the reflection type sensor 117 cannot detect that the position of the printed wiring board 2 is slightly deviated from a predetermined position in the transfer direction for some reason, The wiring board 2 is pushed by the swinging claw member 71 and moved to a predetermined position between the claw members 71 and 71 and positioned.

The first and second moving members 61 and 62 are driven by the motor 83 of the transport driving device 81 in such a state that the two claw members 71 and 71 are positioned so as to sandwich the printed wiring board 2 from both sides. By driving, the other third to tenth moving members 63 to 70 are moved to the downstream side in the transport direction by a predetermined transport stroke.
As the moving members 61 and 62 move in this way, the printed wiring board 2 moves by the transport stroke of the first and second moving members 61 and 62 and is moved from the conveyor 53 of the carry-in device 12 to the first. It moves to the conveyor 34 of the mounting unit 3. At the time of this conveyance, all the moving members 61 to 70 move by the same conveyance stroke.

  When the first and second moving members 61 and 62 are stopped, the rotation speed of the motor 83 of the transport driving device 81 is gradually reduced by the stop means 135. In this way, the rotational speed of the motor 83 is decreased, and the moving speed of the claw member 71 is gradually decreased, so that the moving printed wiring board 2 is relatively relative to the claw member 71 by the interval L2 due to inertial force. It moves to the downstream side in the transport direction and comes into contact with the claw member 71 located on the downstream side in the transport direction from behind. At this time, since the printed wiring board 2 contacts the claw member 71 that is moving while the speed is gradually decreased, the electronic component does not move even if the electronic component is mounted in advance. After that, the printed wiring board 2 stops together with the moving members 61 and 62 while maintaining the state in contact with the claw member 71 on the downstream side in the transport direction as described above. Note that when the frictional force between the printed wiring board 2 and the conveyors 34 and 53 is sufficient and the rotational resistance of the conveyors 34 and 53 resists the inertial force of the printed wiring board 2, the claw member 71 is being decelerated. The printed wiring board 2 stops together with the claw member 71 while maintaining contact with the claw member 71 located on the upstream side in the transport direction.

After the conveyance is finished, the substrate conveyance control unit 40H swings the claw member 71 to move it to the retracted position, and moves each of the moving members 61 to 70 to the initial position.
After the printed wiring board 2 is transported to the conveyor 34 of the first mounting unit 3, the Y-direction drive device 33 moves the table 32 from the transport position to the mounting position, and the electronic component moving device 27 transfers the electronic component to the tape feeder 25. To the printed wiring board 2. After the mounting of the electronic components is completed, the Y-direction drive device 33 moves the table 32 from the mounting position to the transport position.

  The printed wiring board 2 thus moved to the transfer position is transferred onto the conveyor 34 of the second mounting unit 4 by the board transfer device 14. At the time of this conveyance, in the 2nd mounting unit 4, the fixed side conveyor 34a and the movable side conveyor 34b are moved to the position matched with the width | variety of the printed wiring board 2 previously. At this time, the next printed wiring board 2 is simultaneously conveyed from the carry-in device 12 to the first mounting unit 3.

  In the second to fourth mounting units 4 to 6, the same mounting operation as the mounting operation of the first mounting unit 3 described above is performed. That is, the five printed wiring boards 2 are simultaneously transported by the substrate transport device 14 in a state where the conveyors 34 of the mounting units 3 to 6 are positioned on the transport path 51.

  Here, the operation when the width of the printed wiring board 2 changes in the first to fourth mounting units 3 to 6 will be described with reference to FIG. The operation for changing the width is performed after the transfer operation by the substrate transfer device 14 is completed. Moreover, since this operation | movement is the same in the 1st-4th mounting units 3-6, operation | movement of the 1st mounting unit 3 (stage A) is demonstrated here.

  In step P1 of FIG. 22, after the transfer operation by the board transfer device 14 is completed, in the stage A, the lot of the printed wiring board 2 is completed and the printed wiring board 2 is not on the conveyor 34. It is determined whether or not (step A1). If the determination result is YES, in step A2, the conveyor width is changed in accordance with the printed wiring board 2 of the next lot, and the process proceeds to step A3. Also, if NO is determined in step A1, the process proceeds to step A3.

  In step A3, it is determined whether or not the printed wiring board 2 has been sent onto the conveyor 34 of the stage A. If the printed wiring board 2 has not been sent and the printed wiring board 2 has not been sent, the process proceeds to step A9 described later. If the printed wiring board 2 has been sent, the stage A is moved to the mounting position in step A4. After the movement of the stage A is completed, an electronic component is mounted on the printed wiring board 2 of the stage A as shown in steps A5 to A7.

  After mounting the electronic components, in steps A8 to A9, the stage A is moved in the Y direction and positioned at the transport line position (transport path 51). At this time, the stage A is moved to the transport line position (Pstd + W / 2). That is, the table 32 is operated so that the center in the Y direction of the printed wiring board 2 on the stage A is positioned directly below the substrate transfer device 14.

  After the stage A is thus moved onto the transport line position, the printed wiring board 2 is transported by the substrate transport device 14 in step P2. A series of operations including the above-described steps A1 to A9 are performed in the same manner in the other stages B to D. The series of operations in stage B is indicated by steps B1 to B9, the series of operations in stage C is indicated by steps C1 to C9, and the series of operations in stage D is indicated by steps D1 to D9.

  In the surface mounter 1 according to this embodiment, when the printed wiring board 2 to be mounted is switched to one having a different length in the transport direction, first, the printed wiring board in the first to fourth mounting units 3 to 6 is used. 2 is mounted in a predetermined manner, and all the printed wiring boards 2 are sequentially carried out to the carry-out device 13 and further to a device in a subsequent process. In this case, until all the printed wiring boards 2 are unloaded from the first to fourth mounting units 3 to 6, the printed wiring boards 2 having different lengths in the transport direction are transferred from the loading device 12 to the first mounting unit 3. Do not supply to. For this reason, the front and rear claw members 71, 71 of the first transport unit 121 are maintained at the retracted position, or the table 52 on which the printed wiring board 2 having a different length in the loading device 12 is maintained at the loading position. Is done.

  After all the printed wiring boards 2 are discharged from the first to fourth mounting units 3 to 6, the second drive member 91 is moved from the first drive member 77 to the first drive member 77 by the interval changing drive device 92. Move according to the length of 2. By the movement of the second drive member 91, the second, fourth, sixth, eighth, and tenth moving members 62, 64, 66, 68, and 70 become the first, third, fifth, seventh, and ninth moving members 61 and 63, respectively. , 65, 67, 69 move in the same direction as the second drive member 91, and the distance between the front claw member 71 and the rear claw member 71 in each of the transport units 121 to 125 matches the printed wiring board 2. change.

The mounting of the electronic components on the printed wiring board 2 is a method of mounting all the electronic components by sharing the first to fourth mounting units 3 to 6 on one printed wiring board 2 and one printed wiring. A method of mounting all electronic components on the board 2 by each mounting unit can be adopted.
The printed wiring board 2 that has been mounted in the fourth mounting unit 6 is transported by the board transport device 14 and moved to the conveyor 53 of the carry-out device 13, and is driven in the X-direction within the carry-out device 13 by driving the conveyor 53. Sent to location. Thereafter, the conveyor 53 of the carry-out device 13 is moved to the carry-out position by driving the Y-direction drive device 54, and the printed wiring board 2 is sent from the conveyor 53 to a device that performs a post process.

  Therefore, according to the surface mounter 1 configured as described above, the printed wiring board 2 on the conveyors 34 and 53 is transferred to the board transfer device 14 in each of the mounting units 3 to 6 and the carry-in device 12 and the carry-out device 13. The claw member 71 can be positioned. For this reason, according to this embodiment, since the printed wiring board 2 can be always pushed in the transport direction by the claw member 71, the printed wiring board 2 can be transported stably.

  Further, according to this embodiment, in each of the mounting units 3 to 6, the fixed-side conveyor 34 a is provided on one side of the table 32 that is close to the electronic component supply device 26. By moving 2 to the mounting position, the distance between the printed wiring board 2 on the conveyor 34 and the electronic component supply device 26 can be always shortened without being affected by the length of the printed wiring board 2 in the Y direction. Therefore, the mounting efficiency can be improved.

  According to this embodiment, since the central portion of the printed wiring board 2 in the Y direction is positioned directly below the claw member 71 of the board transport device 14, the center of gravity position of the printed wiring board 2 is determined as the claw member. It can be pushed by 71, and the conveyance is further stabilized.

  According to this embodiment, when the printed wiring board 2 has an irregular shape, the edge extending linearly in the Y direction in the plan view of the printed wiring board 2 is configured to be located directly below the claw member 71. Thus, even the irregular printed wiring board 2 can be stably conveyed.

  According to the surface mounter 1 according to this embodiment, since the four mounting units 3 to 6 are equipped so as to be positioned in a staggered pattern in plan view, the printed wiring board 2 is mounted on each mounting unit 3 to 6. A part of the adjacent mounting unit can be disposed in a space formed on the opposite side across the conveyance path 51. For this reason, according to this embodiment, a plurality of mounting units can be compactly equipped in the X direction, and a highly productive and compact surface mounting machine can be manufactured.

(Second Embodiment)
In the first embodiment described above, the surface mounting machine including four mounting units arranged in a staggered pattern in a plan view has been described, but the surface mounting machine according to the present invention, as shown in FIG. It can also be applied to a surface mounter equipped with four mounting units.
FIG. 27 is a plan view showing another example of the surface mounter. In these drawings, the same or equivalent members as those described with reference to FIGS. 1 to 26 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

  The surface mounter 1 shown in FIG. 27 is equipped with four mounting units 201 to 204 arranged in the X direction and the Y direction, and a plurality of transport paths 51 are formed in the center in the Y direction. Conveyors 205-211 are provided. These conveyors 205 to 211 have the same structure as the conveyors 34 and 53 of the support device 24 shown in the first embodiment.

  The first mounting unit 201 and the second mounting unit 202 are provided on the upstream end A in the transport direction of the base 11 and at the same position in the X direction so as to be aligned in the Y direction. The third mounting unit 203 and the fourth mounting unit 204 are provided on the downstream end B of the base 11 in the transport direction and at the same position in the X direction so as to be aligned in the Y direction.

  The mounting units 201 to 204 include a support device 24 for supporting the printed wiring board 2, an electronic component supply device 26 provided adjacent to one side of the support device 24, and the electronic component supply. The electronic component moving device 27 is configured to transfer electronic components from the tape feeder 25 of the device 26 to the printed wiring board 2 on the support device 24.

The support device 24, the electronic component supply device 26, and the electronic component moving device 27 have the same structure as that shown in the first embodiment.
The support device 24 reciprocates in the Y direction between a transport position on the transport path 51 and a mounting position close to the electronic component supply device 26.

The support device 24 of the first mounting unit 201 and the support device 24 of the second mounting unit 202 are such that when one of these support devices 24, 24 is in the mounting position, the other moves to the transport position. Can do.
The support device 24 of the third mounting unit 203 and the support device 24 of the fourth mounting unit 204 are such that when one of these support devices 24, 24 is in the mounting position, the other moves to the transport position. Can do.

The substrate transport device 14 mounted on the surface mounter 1 according to this embodiment is equipped with at least four sets of moving members having the claw members 71 so that at least two printed wiring boards 2 can be transported simultaneously.
Even if the mounting units 201 to 204 are configured in this way, the same effects as when the first embodiment is adopted can be obtained.

  In each of the above-described embodiments, an example in which the contact member is configured by a bar-shaped claw member has been described. However, the shape of the contact member is formed so that the width in the Y direction is wider than that of the claw member. It can be changed as appropriate, such as a plate-like one or a lattice-like one having a plurality of vertical members extending in the vertical direction.

28 to 33 are plan views showing further embodiments.
As shown in FIG. 28, in the printed wiring board 2 that has been mounted by the mounting unit 6 on the most downstream side, the part having the longest distance (Smax) from the end 2b0 on the upstream side in the conveyance direction to the electronic component 200 in the X direction. Each stage is pressed so as to press 2d1 and / or brake a portion 2d2 (not shown) having the longest distance (Smax) from the end 2c0 on the downstream side in the transport direction to the electronic component (not shown) in the X direction. May be adjusted in the Y direction so that the X-direction line L0 of each claw member 71 of the substrate transport apparatus 14 and each part 2d1 or / and each part 2d2 coincide with each other. As a result, the printed wiring board 2 is distorted by pressing or braking, and the mounting position can be further prevented from moving because it is before reflow.

  As shown in FIG. 29, the bottom of the recessed portion 2e1 that is recessed downstream from the end 2b0 on the upstream side in the transport direction of the printed wiring board 2 is pressed or / and upstream from the end 2c0 on the downstream side in the transport direction. Each stage is moved and adjusted in the Y direction so as to brake the bottom of the recessed portion 2e2 (not shown), and the X direction line L0 of each claw member 71 of the substrate transport device 14 and the bottom of each recess 2e1 or / And you may make it make the bottom part of each recessed part 2e2 correspond. Accordingly, the printed wiring board 2 is less likely to be tilted during conveyance, and / or is less likely to be tilted when the printed wiring board 2 is stopped, and the printed wiring board 2 can be transported or stopped stably.

  As shown in FIG. 30, the convex portion 2f1 protruding upstream of the end 2b0 on the upstream side in the transport direction of the printed wiring board 2 is pressed or / and protruded downstream from the end 2c0 on the downstream side in the transport direction. Each stage is moved and adjusted in the Y direction so as to brake the convex portion 2f2 (not shown), and the X direction line L0 and the convex portion 2f1 of each claw member 71 of the substrate transport device 14 and / or each You may make it make the convex part 2f2 correspond. As a result, the printed wiring board 2 is distorted by pressing or braking, and the mounting position can be further prevented from moving because it is before reflow.

  As shown in FIG. 31, a convex portion protruding to the upstream side in the conveyance direction of the printed wiring board 2, which is mounted and pressed against the conveyance convex portion 2 g 1 which is torn off when soldering is completed by a reflow furnace, Alternatively, and / or so as to brake the convex portion 2g2 (not shown) that protrudes downstream in the conveying direction and is mounted and broken off when soldering is completed by the reflow furnace. Each stage may be moved and adjusted in the Y direction so that the X-direction line L0 of each claw member 71 of the substrate transport apparatus 14 and each transport convex portion 2g1 or / and each transport convex portion 2g2 coincide with each other. . As a result, the printed wiring board 2 is distorted by pressing or braking, and the mounting position can be further prevented from moving because it is before reflow. As shown in FIG. 31, notches 2g3 for cutting are formed at both ends in the Y direction at the bases of the conveying convex portions 2g1 and 2g2.

  As shown in FIG. 32, among the plurality of convex portions protruding upstream from the end 2b0 on the upstream side in the conveyance direction of the printed wiring board 2, the center line L1 that is the center in the Y direction of the printed wiring board 2 is the first. Near (S1 <S2 <S3) the convex portion 2h1 is pressed, and / or the center of the printed wiring board 2 in the Y direction among a plurality of convex portions protruding downstream from the end portion 2c0 on the downstream side in the transport direction. Each stage is moved and adjusted in the Y direction so as to brake the convex portion 2h2 (not shown) closest to the center line L1, and the X-direction line L0 of each claw member 71 of the substrate transport device 14 and each convex portion 2h1. Alternatively, and / or the convex portions 2h2 may be matched. As a result, the printed wiring board 2 is distorted by pressing and braking, and the mounting position is prevented from moving because it is before reflow, and the printed wiring board 2 is less likely to tilt during conveyance. When the board 2 stops, it becomes difficult to tilt, and the printed wiring board 2 can be stably conveyed or stopped.

  As shown in FIG. 33, in the printed wiring board 2 that has been mounted by the mounting units 3 to 6, respectively, the center of gravity of each printed wiring board 2 (G1,... G4, G5 in order from the downstream side) The positions of the stages are adjusted in the Y direction so that the X-direction lines L0 of the claw members 71 of the substrate transport apparatus 14 coincide. The center of gravity G5 is the center of gravity of the printed wiring board 2 on the carry-in device 12. When pressing or / and braking along the X direction line through the center of gravity, tilting is less likely to occur. When there is a variation in the Y direction position of each of the center of gravity G1,... G4, G5, it passes through the average position and is pressed or / and braked along the X direction line. As a result, the inclination due to conveyance / stop is reduced on average. When the printed wiring board 2 is mounted on the back surface, the printed wiring board 2 is most easily inclined by pressing or braking along the X-direction line through the center of gravity G1 of the heavy printed wiring board 2 including its components. It is possible to reliably prevent the most downstream printed wiring board 2 from being inclined.

It is a top view which shows schematic structure of the surface mounting machine which concerns on this invention. It is a top view of the surface mounting machine concerning the present invention. It is the III-III sectional view taken on the line in FIG. It is a perspective view which shows the state equipped with the mounting unit in the base. It is a perspective view which shows the conveyor for conveyance. It is a perspective view which shows the structure of a center frame. It is a side view of a board | substrate conveyance apparatus. It is sectional drawing which shows the drive system at the time of conveyance. It is sectional drawing which shows a drive system when changing the space | interval of a nail | claw member. It is a longitudinal cross-sectional view of the drive unit for board | substrate conveyance apparatuses. It is a longitudinal cross-sectional view which shows a part of drive unit. It is a perspective view which expands and shows the drive unit of a board | substrate conveyance apparatus. It is a perspective view which shows the nail | claw member and cylinder which are located in a retracted position. It is a perspective view which shows the nail | claw member and cylinder which are located in a conveyance position. It is a front view which expands and shows the support part of a nail | claw member. It is a side view which shows the state which moved the nail | claw member to the retracted position. It is a side view which shows the state which positioned the nail | claw member in the conveyance position. It is a perspective view which shows the state which conveys a printed wiring board with a pair of nail | claw member. It is a side view for demonstrating the space | interval of a nail | claw member. It is a block diagram which shows the structure of the control system of a board | substrate conveyance apparatus. It is a block diagram which shows the structure of the control system of the surface mounter which concerns on this invention. It is a flowchart for demonstrating operation | movement of each mounting unit. It is a top view for demonstrating operation | movement of a conveyor and a table, The figure shows a state when setting a reference position. It is a top view for demonstrating operation | movement of a conveyor and a table, The figure shows the state which positioned the center part of the Y direction of the printed wiring board below the nail | claw member. It is a top view for demonstrating operation | movement of a conveyor and a table, The figure shows the state when conveying an irregular printed wiring board. It is a top view for demonstrating operation | movement of a conveyor and a table, The figure shows the state in which the printed wiring boards from which the width dimension of a Y direction differs are mixed. It is a top view which shows the other example of a surface mounter. It is a top view which shows other embodiment which positions a press member in the site | part spaced apart from the electronic component. It is a top view which shows other embodiment which positions a press member in the bottom of a recessed part. It is a top view which shows other embodiment which positions a press member on the top part of a convex part. It is a top view which shows other embodiment which positions a press member on the top part of a convex part. It is a top view which shows other embodiment which positions a press member on the top part of a convex part. It is a top view which shows other embodiment which positions a press member in the vicinity of a gravity center.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Surface mounting machine, 2 ... Printed wiring board 2, 3 ... 1st mounting unit, 4 ... 2nd mounting unit, 5 ... 3rd mounting unit, 6 ... 4th mounting unit, 14 ... Board conveyance apparatus ,
DESCRIPTION OF SYMBOLS 26 ... Electronic component supply apparatus, 27 ... Electronic component moving apparatus, 33 ... Y direction drive device, 34, 53 ... Conveyor, 40 ... Controller, 40H ... Control part for board | substrate conveyance, 42 ... Support member, 45 ... Head unit, 48 DESCRIPTION OF SYMBOLS ... Adsorption head, 51 ... Conveyance path, 71 ... Claw member, 61-70 ... 1st-10th moving member, 72 ... Drive unit, 81 ... Drive apparatus for conveyance, 92 ... Drive apparatus for interval change, 121-125 DESCRIPTION OF SYMBOLS 1st-5th conveyance unit, 135 ... Stop means, 200 ... Electronic component, 201-204 ... Mounting unit, 2e1 ... Concave part, 2f1 ... Convex part, 2g1 ... Convex part for conveyance, 2h1 ... Convex part, G1- G5: Center of gravity.

Claims (9)

The electronic component is picked up from the electronic component supply device by moving the suction head for sucking the electronic component above the base in the X direction, which is the direction in which the printed wiring board is conveyed, and the Y direction perpendicular to the X direction. A plurality of mounting units to be mounted on the wiring board are provided on one side and the other side of the base in the Y direction, and the mounting position for mounting the electronic component in these mounting units is shifted in the Y direction with respect to the transport position of the printed wiring board. In the surface mounter in position,
A transport path forming member for each mounting unit that supports the printed wiring board to be movable in the X direction;
A substrate transfer device that is positioned in the center of the base in the Y direction and above the transfer path forming member, and that moves a printed wiring board placed on the transfer path forming member in the transfer direction by a pressing member;
By moving the transport path forming member in the Y direction, the printed wiring board is moved between the mounting position and the transport position, and the printed wiring board is moved in the Y direction when the printed wiring board is moved to the transport position. A surface mounter comprising: a table for aligning a predetermined position with a position of a pressing member of the substrate transfer device. 2. The surface mounting machine according to claim 1, wherein a conveyance path is formed by a fixed-side conveyor provided on the table so that movement in the Y-direction is restricted and a movable-side conveyor provided on the table so as to be movable in the Y-direction. Composing the components,
A surface mounting machine, wherein the fixed side conveyor is provided on one side of the table close to the electronic component supply device, and the movable side conveyor is provided on the other side of the table. In the surface mounting machine according to claim 1 or 2,
A surface mounting machine characterized in that the predetermined position in the Y direction of the printed wiring board that the table is aligned with the position of the pressing member of the board conveying device is the central portion of the printed wiring board in the Y direction. In the surface mounting machine according to claim 1 or 2,
A surface mounting machine characterized in that the predetermined position in the Y direction of the printed wiring board to which the table is aligned with the position of the pressing member of the board conveying device is an edge extending linearly in the Y direction in plan view of the printed wiring board. In the surface mounting machine according to claim 1 or 2,
The predetermined position in the Y direction of the printed wiring board where the table is aligned with the position of the pressing member of the board conveying device is the part where the distance from the edge of the printed wiring board in the conveying direction to the electronic component on the printed wiring board is the longest. A surface mounting machine characterized by that. In the surface mounting machine according to claim 1 or 2,
A surface mounting machine characterized in that the predetermined position in the Y direction of the printed wiring board that the table is aligned with the position of the pressing member of the board conveying device is the bottom of a recess formed at the edge of the printed wiring board in the conveying direction. In the surface mounting machine according to claim 1 or 2,
The surface mounting is characterized in that the predetermined position in the Y direction of the printed wiring board that the table is aligned with the position of the pressing member of the board conveying device is the top of the convex portion protruding from the edge of the printed wiring board in the conveying direction. Machine. In the surface mounting machine according to claim 1 or 2,
A surface mounting machine characterized in that the predetermined position in the Y direction of the printed wiring board that the table is aligned with the position of the pressing member of the board conveying device is a part closest to the center of gravity of the printed wiring board. In the surface mounter according to any one of claims 1 to 8,
A plurality of mounting units are provided so as to be aligned in the X direction on one side and the other side in the Y direction with respect to the center in the Y direction of the base. Among these mounting units, two mounting units adjacent in the X direction are Y A surface mounter characterized in that it is equipped so as to be positioned in a staggered pattern in plan view by shifting in the X direction with respect to two mounting units arranged in the X direction on the other side of the direction.

Images