JP4819598B2 - Surface mount machine - Google Patents

Description

  The present invention relates to a surface mounter including a substrate moving device that conveys a printed wiring board by pushing it with a claw member.

A conventional surface mounter of this type is disclosed in Patent Document 1, for example.
The substrate moving device of the surface mounter shown in Patent Document 1 includes a claw member at a position where the printed wiring board is sandwiched from the upstream side and the downstream side in the transport direction.

  These claw members are attached to one movable arm so as to hang down from above. The movable arm reciprocates at a predetermined timing in both the conveyance direction and the vertical direction of the printed wiring board, and moves so that the movement path becomes a rectangle when viewed from the side. The two feeding claws are connected to the transport moving unit via the arms, respectively, and are moved by a known driving device such as a pulse motor or a servo motor to move the transport moving unit by a desired distance.

  The conventional substrate moving apparatus configured as described above conveys the printed wiring board by lowering the claw members so as to be positioned on both sides of the printed wiring board and moving the movable arm in the conveying direction in this state. According to this substrate moving apparatus, one printed wiring board is transported from the loading position to the mounting position.

On the other hand, in the substrate moving apparatus described in Patent Document 2, the feed claws for each of the plurality of printed wiring boards are connected and integrated so that the plurality of printed wiring boards are simultaneously at the same distance.
There is.
Japanese Patent No. 3227881 Japanese Patent Laid-Open No. 11-40599

  In the substrate moving device of the surface mounter described in Patent Document 1, when a printed wiring board having a different length in the conveying direction is conveyed, the distance between the two claw members is adjusted to the size of the printed wiring board. The position of the claw member must be adjusted each time. That is, in this conventional surface mounter, the mounting operation has to be interrupted every time the operation of adjusting the position of the claw member is performed, and there is a problem that productivity is lowered.

  In addition, the substrate moving device described in Patent Document 2 cannot change the moving distance of a plurality of printed wiring boards or change the timing of movement, and this substrate moving device is mounted on a surface mounter. If the printed wiring board is replaced, the printed wiring boards having different lengths cannot be transported in the transport direction unless all the printed wiring boards at the plurality of mounting positions are discharged downstream. There was a problem that the performance decreased.

  The present invention has been made to solve such a problem, and provides a surface mounting machine with improved mounting efficiency by improving the movement of the contact member that contacts the printed wiring board. Objective.

In order to achieve this object, a surface mounting machine according to the present invention abuts a conveyance path forming member that supports a printed wiring board so as to be movable in the conveyance direction, and a printed wiring board placed on the conveyance path forming member. In a surface mounter including a substrate moving device that moves a printed wiring board in a conveying direction by an abutting member, the substrate moving device is provided with a ball screw shaft provided so as to extend in the conveying direction, and the ball screw shaft. a plurality of ball nut screwed, has a plurality of hollow motors for driving the ball nut, respectively, and a plurality of moving members which move parallel along the ball screw shaft by the driving according to the respective hollow motor, the plurality of each of the moving member, a sensor for detecting at least one of said abutment member, the position of the printed wiring board positioned on the transportation path forming member on the provided It is, those with an interval setting means for moving said contact member on the basis of the position of the printed wiring board detected by the sensor.

  A surface mounter according to a second aspect of the present invention is the surface mounter according to the first aspect, wherein one contact member is arranged on each of two moving members adjacent to each other in the transport direction, and the upstream in the transport direction. The contact member on the side is opposed to the end surface on the upstream side in the conveyance direction of the printed wiring board, and the contact member on the downstream side in the conveyance direction is opposed to the end surface on the downstream side in the conveyance direction of the printed wiring board.

  A surface mounter according to a third aspect of the present invention is the surface mounter according to the second aspect, wherein the front side moving member is provided with a contact member facing the end surface on the downstream side in the transport direction of the printed wiring board. A transport unit including a rear moving member provided with an abutting member facing the upstream end surface of the printed wiring board in the transport direction is arranged in the transport direction of the printed wiring board.

A surface mounter according to a fourth aspect of the present invention is the surface mounter according to any one of the first to third aspects, wherein the abutting member includes a feed position adjacent to the printed wiring board. It is possible to move between the retracted position separated from the printed wiring board.

  A surface mounter according to a fifth aspect of the present invention is the surface mounter according to any one of the first to fourth aspects, wherein the substrate moving device is disposed above the base, and a conveyance path forming member is provided. In a second direction orthogonal to the first direction consisting of the transport direction, on the base so as to be able to reciprocate between the transport position below the substrate moving device and the mounting position separated from the transport position. And an electronic component supply device provided on a base opposite to the transport position with the mounting position of the transport path forming member as a boundary, and a suction head for sucking electronic components. An electronic component moving device that moves an electronic component from the electronic component supply device onto a printed wiring board on the transport path forming member at a mounting position by moving the electronic component upward in a first direction and a second direction. Mounting unit consisting of A plurality of mounting members mounted in the first direction on the base, each having the same number of moving members as the plurality of mounting units. They are arranged in the transport direction.

  A surface mounting machine according to an invention described in claim 6 is the surface mounting machine described in claim 5, wherein a front moving member provided with a contact member facing an end surface on the downstream side in the transport direction of the printed wiring board is provided. In the printed wiring board, a transport unit constituted by a rear moving member provided with a contact member facing the upstream end surface in the transport direction is arranged in the same transport direction as the number of mounting units. is there.

  A surface mounter according to a seventh aspect of the present invention is the surface mounter according to the fifth or sixth aspect, wherein the substrate moving device is disposed above a central portion in the second direction of the base, and A mounting unit in which the electronic component supply device, the mounting position of the transport path forming member and the electronic component moving device are arranged on one side in the second direction with respect to the central portion in the second direction of the base, and the second of the base The electronic component supply device, the mounting position of the transport path forming member, and the mounting unit in which the electronic component moving device is disposed are alternately arranged in the first direction on the other side in the second direction with the central portion in the direction of The two mounting units adjacent in the first direction among the plurality of mounting units are positioned in a staggered pattern in plan view by shifting the other mounting unit in the first direction with respect to one mounting unit. Equipped with Each conveyance path forming member of the mounting unit is arranged in a first direction in a state positioned in the transport position, it constitutes a conveying path of the printed wiring board.

  According to the present invention, the printed wiring board can be conveyed by moving the contact member together with the moving member by driving the hollow motor provided in each moving member. The position of the contact member can be easily changed in accordance with the length of the printed wiring board in the transport direction by driving with a hollow motor. Therefore, according to the present invention, it is not necessary to perform a special setup change operation when transporting printed wiring boards having different lengths in the transport direction.

  Further, according to the present invention, the printed wiring board can be transported to each mounting position even when a plurality of mounting positions are provided. When transporting multiple printed wiring boards, the movement of the abutment member can be controlled for each printed wiring board. Therefore, the distance traveled by the printed wiring board can be changed according to the mounting position. It is possible to easily change the timing of movement of the printed wiring board, for example, by sequentially transporting from a prepared printed wiring board.

  Therefore, according to the present invention, when the printed wiring board is transported, the degree of freedom in the transport direction length, moving distance, moving timing, etc. of the printed wiring board is increased, and the electronic component mounting operation is performed to change these. Since it is not necessary to stop the machine more than necessary, a highly productive surface mounter can be provided.

  According to the second aspect of the present invention, at least one of the moving member having the abutting member located on the upstream side in the transport direction and the moving member having the abutting member located on the downstream side in the transport direction is the other. The distance between the contact member located upstream in the transport direction and the contact member located downstream in the transport direction can be easily changed. For this reason, in the surface mounter according to the present invention, the length in the transport direction is adopted although the contact member is disposed on the upstream side and the downstream side in the transport direction with respect to the printed wiring board. However, when transporting different printed wiring boards, the time required for so-called setup change is shortened, so that the mounting efficiency is increased.

  According to invention of Claim 3, a some printed wiring board can be conveyed synchronously. For this reason, according to the surface mounter according to the present invention, it is possible to equip a plurality of mounting portions, and it is possible to transport and position the printed wiring boards to these mounting portions, respectively. As a result, the mounting efficiency is further improved.

According to invention of Claim 4, a printed wiring board can be conveyed by moving to a conveyance direction in the state which positioned the contact member in the sending position. In addition, according to the present invention, after the printed wiring board has been transported, the contact member is positioned at the retracted position and moved in the direction opposite to the transport direction, thereby transporting the contact member while avoiding interference with the printed wiring board. You can return to the previous initial position.

  According to the invention of claim 5 and claim 6, since it is possible to equip a plurality of mounting units so as to be aligned in the first direction, it is possible to simultaneously mount electronic components on a plurality of printed wiring boards, A surface mounter with even higher mounting efficiency can be provided.

According to the seventh aspect of the present invention, it is possible to dispose a part of the adjacent mounting unit in the space formed on the opposite side across the conveyance path with respect to each mounting unit. For this reason, a plurality of mounting units can be compactly equipped in the first 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.

7 is a perspective view of the substrate moving device, FIG. 8 is a sectional view of the hollow motor, FIG. 9 is a sectional view taken along the line IX-IX of the hollow motor in FIG. 8, and FIG. It is. FIG. 11 is a side view showing a state where the claw member is moved to the retracted position, and FIG. 12 is a side view showing a state where the claw member is positioned at the feed position.

FIG. 13 is a perspective view showing the claw member and the cylinder located at the retracted position, and FIG. 14 is a perspective view showing the claw member and the cylinder located at the feed position. FIG. 15 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. FIG. 16 is a side view for explaining the interval between the claw members, and FIG. 17 is a block diagram showing the configuration of the control system of the substrate moving apparatus.

  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. In this embodiment, the X direction is the first direction in the invention described in claim 4, and the Y direction is the second direction in the invention described in claim 4.

  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 moving 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 moving device 14 is formed so as to extend in the Y direction as shown in FIGS. 1 and 3, and is provided above the center 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 moving 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 moved away from the substrate moving device 14, which will be described later, and the electronic component supply device 26 side with respect to this conveying position by driving the Y-direction driving device 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 (conveyance direction) by driving a substrate moving 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 on 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 vertical member 36 is moved in the Y direction with respect to the table 32. 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.

  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 holding position 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 device 40 described later. The substrate transfer control device 40 stops the transfer operation by the substrate moving 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 device 40 described later. The substrate transfer control device 40 keeps the Y-direction drive device 33 and a Y-direction drive device 54 (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 table 32 is moved to the transport position 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 center of the substrate moving device 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 moving 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.

  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 board imaging camera 49 (see FIG. 2) for imaging 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 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 printed wiring board 2 is moved by a substrate moving 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, with the printed wiring board 2 being 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 moving 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 FIG. 3, the substrate moving device 14 is supported by the center frame 23 via a support frame 61, and a claw member 62 (see FIG. 7) for the printed wiring board 2 positioned at the transfer position is described later. And (see FIG. 8). In this embodiment, the claw member 62 constitutes a contact member in the present invention. More specifically, as shown in FIG. 7, the substrate moving device 14 includes a support frame 61 fixed below the center frame 23, and attached to both ends of the support frame 61 and extends in the X direction. One ball screw shaft 63, first to tenth moving members 64 to 73 supported by the ball screw shaft 63, and a substrate transfer control device 40 for controlling the operation of these moving members 64 to 73 ( 17). The substrate moving device 14 according to this embodiment simultaneously conveys the five printed wiring boards 2 by the ten moving members 64 to 73 described above.

  The support frame 61 is formed to have substantially the same length as the center frame 23, and supports both ends of the ball screw shaft 63 via support members 74 at both ends. Both end portions of the ball screw shaft 63 are fixed to the support member 74 so as not to rotate.

  As shown in FIG. 8, the first to tenth moving members 64 to 73 include a ball nut 75 screwed to the ball screw shaft 63, a hollow motor 76 for rotating the ball nut 75, The claw member 62 and the cylinder 77 are provided at the lower end of the hollow motor 76.

The hollow motor 76 includes a rotor 81 provided integrally with the ball nut 75 and a stator 82 surrounding the rotor 81.
The rotor 81 includes a cylindrical body 83 through which the ball screw shaft 63 penetrates in a loosely fitted state, a permanent magnet 84 fixed to the outer peripheral surface of the cylindrical body 83, and a resolver rotor coil 85. The cylinder 83 is formed so as to protrude in the axial direction from one end of the ball nut 75 in the axial direction. In order to prevent the deflection of the ball screw shaft 63, the slider 94 may be suspended by the guide rail 93 so as to be movable.

  The stator 82 includes a pair of motor brackets 88 and 89 connected to outer peripheral portions of both ends of the cylindrical body 83 via bearings 86 and 87, respectively, and these motor brackets 88 and 89, respectively. A cylindrical motor case 90 sandwiched by 89, a stator coil 91 and a resolver stator coil 92 provided on the inner peripheral portion of the motor case 90, and the like.

  As shown in FIGS. 8 and 9, a slider 94 is provided at the upper end of the motor brackets 88 and 89 so that a guide rail 93 protruding from the bottom of the support frame 61 is slidably fitted. ing. By fitting the slider 94 to the guide rail 93 in this way, the member on the stator 82 side of the hollow motor 76 can be restricted from rotating together with the ball nut 75. That is, the first to tenth moving members 64 to 73 having the hollow motor 76 move in parallel along the ball screw shaft 63 when the ball nut 75 is rotated by the hollow motor 76. The operation (rotation direction, rotation speed, etc.) of the hollow motor 76 is controlled by a substrate transfer control device 40 described later.

  As shown in FIG. 8, a support bracket 101 is attached to the lower end portions of the motor brackets 88 and 89, and a support member 101a provided so as to protrude downward from the support bracket 101, and the support member 101a. A claw member 62 is swingably provided through the attached support shaft 102, and a cylinder 77 for swinging the claw member 62 is provided.

  As shown in FIG. 10, the claw member 62 is attached to the tip of a lever 62a as a claw member main body. The assembly comprising the claw member 62 and the lever 62a is formed in a rod shape, and is swingably supported by the support bracket 101 by a support shaft 102 penetrating the central portion in the longitudinal direction. The support shaft 102 according to this embodiment penetrates the lever 62a so as to be rotatable. That is, the claw member 62a swings about the support shaft 102 as the lever 62a rotates (swings) with respect to the support shaft 102.

  The support shaft 102 is attached to the support member 101a so that the axial direction is in the Y direction. That is, as shown in FIGS. 13 and 14, the claw member 62 is between a position where one end portion is directed downward and a position where the one end portion is directed horizontally as shown in FIGS. 11 and 13. Can swing. A cylinder 77 described later is connected to the other end of the claw member 62. The claw member 62 swings as described above by driving the cylinder 77.

The position of the claw member 62 when the claw member 62 swings so that one end of the claw member 62 is directed downward is hereinafter simply referred to as a feed position, and the claw member 62 is oriented so that the one end is oriented in the horizontal direction. The position of the claw member 62 when swung is hereinafter simply referred to as a retracted position. As shown in FIG. 12, the length of the claw member 62 is such that the tip of the claw member 62 is positioned below the printed wiring board 2 on the conveyors 34 and 53 in a state where the claw member 62 is positioned at the feed position. Is formed.

  The cylinder 77 is an air cylinder, and is provided at a position adjacent to the claw member 62 in a state where the axial direction is in the X direction, as shown in FIGS. 11 and 12. The tip of the piston rod 77a of the cylinder 77 is rotatably connected to the end of the lever 62a opposite to the claw member 62.

  The connecting portion between the piston rod 77a and the lever 62a has a structure in which a slider shaft 103 parallel to the support shaft 102 is passed through the lever 62a, and the tip end portion of the piston rod 77a is rotatably fitted to the slider shaft 103. Has been adopted. Both end portions of the slider shaft 103 protrude to the outside of the support member 101 a through a long hole 104 formed in the support member 101 a that supports the support shaft 102. The long hole 104 is formed so as to extend in parallel with the moving direction of the piston rod 77a.

  At both ends of the slider shaft 103, sliders 105 that are slidably fitted into the long holes 104 are attached. The connecting portion between the slider shaft 103 and the lever 62a has a structure in which the slider shaft 103 is inserted into a long hole in the radial direction from the support shaft 102 formed in the lever 62a. At the same time, the slider shaft 103 moves in parallel along the elongated hole 104 so that the lever 62 a and the claw member 62 can swing around the support shaft 102.

Thus, when the piston rod 77a connected to the claw member 62 is inserted (retracted) into the cylinder body 77b, the claw member 62 swings to the retracted position as shown in FIGS. Further, when the piston rod 77a protrudes (advances) from the cylinder body 77b from this state, the claw member 62 swings to a feed position directed downward as shown in FIGS.

As shown in FIGS. 10, 13, and 14, an optical sensor 106 is provided at a portion of the support bracket 101 adjacent to the claw member 62. FIG. Although not shown, the sensor 106 is a reflection type having an LED and an image sensor, and the tip of the claw member 62 is finally moved by the claw member 62 swinging from the retracted position to the feed position. It is detected whether or not the printed wiring board 2 is located at the moving part. More specifically, the LED irradiates illumination light 106a obliquely downward as shown in FIGS. The illumination light 106a is emitted toward the portion where the tip of the claw member 62 is located when the claw member 62 swings to the feed 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 106a, the imaging element receives the reflected light.
The detection result of the reflective sensor 106 composed of this imaging device is sent as detection data to the substrate transfer control device 40.

  Position sensors 107 for detecting the position of a piston (not shown) are provided at both ends of the cylinder 77, respectively. Although not shown, the position sensor 107 is configured to detect a change in the magnetic field caused by the movement of the magnet embedded in the piston of the cylinder 77 together with the piston. The detection results of these position sensors 107 are sent as detection data to the substrate transfer control device 40. Switching between forward and backward movement of the cylinder 77 is performed by the substrate transfer control device 40 opening and closing an electromagnetic valve provided in a pneumatic circuit (not shown) of the cylinder 77.

The claw member 62 and the cylinder 77 are the first, third, fifth, seventh, and ninth movements located at the odd numbered positions counted from the upstream side in the transport direction among the ten moving members 64 to 73. The members 64, 66, 68, 70, 72 are attached to the hollow motor 76 so that the cylinder 77 is located on the downstream side in the transport direction with respect to the claw member 62. The claw members 62 of these moving members come close to the printed wiring board 2 from the rear side (upstream side) in the transport direction by swinging from the retracted position to the feeding position.

Further, the second, fourth, sixth, eighth, and tenth moving members 65, 67, 69, and 71 located at the even number of the ten moving members 64 to 73 from the upstream side in the transport direction. , 73 are attached to the hollow motor 76 so that the cylinder 77 is located upstream of the claw member 62 in the conveying direction. The claw members 62 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 feed position.

Of the first to tenth moving members 64 to 73, the first moving member 64 and the second moving member 65 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 111 conveyed to is comprised.
The third moving member 66 and the fourth moving member 67 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 68 and the sixth moving member 69 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 113 is configured.

The seventh moving member 70 and the eighth moving member 71 constitute a fourth transport unit 114 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 72 and the tenth moving member 73 constitute a fifth transport unit 115 that cooperates with each other to transport the printed wiring board 2 from the fourth mounting unit 6 to the carry-out device 13. . The pair of claw members 62 and 62 provided in each of the first to fifth transport units 111 to 115 swing from the retracted position to the feeding position as shown in FIGS. 11, 12, and 15. Thus, the printed wiring board 2 is moved to a position so as to be sandwiched from both sides in the transport direction.

  Each of these first to fifth transport units 111 to 115 constitutes a transport unit in the present invention. In addition, the first, third, fifth, seventh, and ninth moving members 64, 66, 68, 70, and 72 in these transport units 111 to 115 constitute rear side moving members in the present invention. The second, fourth, sixth, eighth, and tenth moving members 65, 67, 69, 71, and 73 constitute a front moving member in the present invention.

  The distance between the pair of moving members constituting each of the transport units (the distance between the front moving member and the rear moving member) is set corresponding to the length of the printed wiring board 2 as shown in FIG. Yes. 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.

  The distance L is adjusted according to the length of the printed wiring board 2 to be conveyed in the conveying direction by moving one moving member in the conveying direction with respect to the other moving member. When the printed wiring board 2 is transported by the transport units 111 to 115 described above, two hollow motors 76 and 76 provided on a pair of moving members (a front moving member and a rear moving member) are described later. It is rotated in the same direction by the same rotational speed by the transport control device 40.

As shown in FIG. 17, the substrate transfer control device 40 includes a substrate presence / absence determination unit 121, a rotation direction setting unit 122, an interval setting unit 123, a transfer stroke setting unit 124, a stop unit 125, a cylinder advance / And reverse switching means 126.
The board presence / absence judging means 121 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 is supposed to be located, the substrate presence / absence judging means 121 judges that it is abnormal and stops the surface mounter 1.

  The rotation direction setting means 122 is for setting the direction in which the hollow motor 76 provided in each moving member 64 to 73 rotates, and the printed wiring board 2 is moved by the first to tenth moving members 64 to 73. When transporting, for example, the hollow motor 76 of each moving member is rotated forward. Further, when the first to tenth moving members 64 to 73 are returned to the initial positions after the printed wiring board 2 is conveyed, the rotation direction setting means 122 is operated by a cylinder forward / backward switching means 126 (to be described later). After all the claw members 62 of the moving members 64 to 73 are swung to the retracted position, the hollow motor 76 of each moving member is rotated in the opposite direction to that during conveyance.

The interval setting means 123 sets the interval between the pair of claw members 62 and 62 of the first to fifth conveyance units 111 to 115 according to the length L1 in the conveyance direction of the printed wiring board 2 to be conveyed. Further, the interval setting means 123 is positioned below the claw member 62 by the reflective sensor 106 provided in the vicinity of the claw member 62 (at a position where it interferes with the claw member 62 when the claw member 62 swings to the feed position). When the printed wiring board 2 is detected, the claw member 62 is moved slightly in a direction away from the printed wiring board 2 in a plan view so as to avoid interference between the claw member 62 and the printed wiring board 2.

  The transport stroke setting means 124 sets the transport stroke (movement distance) during transport of each moving member for each of the first to fifth transport units 111 to 115. That is, the transport stroke setting means 124 sets the transport stroke during transport of the first and second moving members 64 and 65 constituting the first transport unit 115 to the interval between the carry-in device 12 and the first mounting unit 3. Set together.

Similarly, the transport stroke setting means 124 sets the transport stroke during transport of the third and fourth moving members 66 and 67 constituting the second transport unit 112 to the first mounting unit 3 and the second mounting unit. Set according to the interval with the unit 4.
The transport stroke setting means 124 sets the transport stroke when transporting the fifth and sixth moving members 68 and 69 constituting the third transport unit 113 to the interval between the second mounting unit 4 and the third mounting unit 5. Set according to.

The transport stroke setting means 124 sets the transport stroke when transporting the seventh and eighth moving members 70 and 71 constituting the fourth transport unit 114 to the interval between the third mounting unit 5 and the fourth mounting unit 6. Set according to.
The transport stroke setting means 124 adjusts the transport stroke during transport of the ninth and tenth moving members 72 and 73 constituting the fifth transport unit 115 to the distance between the fourth mounting unit 6 and the unloading device 13. Set.

  Further, the transport stroke setting means 124 is configured to be able to adjust the transport stroke when transporting each moving member for each transport unit. This is because the printed wiring board 2 is positioned in the vicinity of the tape feeder 25 that is frequently used (many electronic parts are provided for mounting) among the many tape feeders 25 provided in the mounting units 3 to 6. is there. For example, when the frequently used tape feeder 25 is on one end side in the X direction in each mounting unit, the transport stroke setting means 124 transports the printed wiring board 2 at a position biased toward the one end side in the X direction in the mounting area. The transport stroke is set as described above. In this way, by changing the position in the X direction within the mounting area of the printed wiring board 2 so as to approach the tape feeder 25 that is frequently used, the head unit 45 moves between the tape feeder 25 and the printed wiring board 2. The moving distance when reciprocating can be shortened.

  The stopping means 125 is for stopping the hollow motor 76 that rotates when the printed wiring board 2 is transported, and is configured to gradually decrease the rotational speed of the hollow motor 76 when stopping. The stopping means 125 according to this embodiment performs the negative acceleration generated when the rotational speed of the hollow motor 76 is reduced to be a predetermined magnitude when stopping the hollow motor 76 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 126 operates each cylinder 77 of the first to tenth moving members 64 to 73 by a pneumatic valve control device (not shown) before the hollow motor 76 rotates in the conveying direction. All the claw members 63 are swung to the feed position. Further, the cylinder forward / reverse switching means 126 is provided for the first to tenth moving members 64 to 73 by a pneumatic valve control device (not shown) before the hollow motor 76 rotates in the direction opposite to the conveying direction. Each cylinder 77 is operated to swing all the claw members 63 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 table 52 is moved so that the conveyor 53 provided on the table 52 of the carry-in device 12 is aligned with the conveyor 34 of the first mounting unit 3 located at the transfer position. At this time, the first to fifth transport units 111 to 115 of the substrate moving device 14 are moved to the initial positions in the transport direction after each claw member 62 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 106 on the claw member 62 side that the printed wiring board 2 is not located below the claw member 62, and the first and first The pair of claw members 62 of the two moving members 64 and 65 are swung to the feed position. At this time, as shown in FIG. 11 and FIG. 12, these claw members 62 swing so as to change from a substantially horizontally extending state to a downwardly extending state.

That is, the claw member 62 of the first moving member 64 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 feed position directed downward. Move. On the other hand, the claw member 62 of the second moving member 65 is located on the downstream side in the transport direction with respect to the printed wiring board 2 and swings from a retracted position directed to the downstream side in the transport direction to a feed position directed downward. Move. By swinging the two claw members 62 in this way, the claw member 62 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 62 approach the printed wiring board 2 from the upstream side and the downstream side in the transport direction. For this reason, in this board moving device 14, even if the reflection type sensor 106 cannot detect that the position of the printed wiring board 2 is slightly deviated from the predetermined position in the transport direction for some reason, The wiring board 2 is pushed by the swinging claw member 62 and moved to a predetermined position between the claw members 62 and 62 and positioned.

The first and second moving members 64 and 65 are driven by the hollow motor 76 in a state where the two claw members 62 are positioned in such a manner as to sandwich the printed wiring board 2 from both sides. Move downstream in the transport direction.
As the moving members 64 and 65 move in this way, the printed wiring board 2 moves by the conveying stroke of the first and second moving members 64 and 65, and the first wiring member 12 moves from the conveyor 53 of the carry-in device 12. It moves to the conveyor 34 of the mounting unit 3. At the time of this conveyance, all the moving members 64 to 73 move by the conveyance stroke for each conveyance unit.

  When the first and second moving members 64 and 65 are stopped, the rotation speed of the hollow motor 76 is gradually decreased by the stop means 125. In this way, the rotational speed of the hollow motor 76 is decreased, and the moving speed of the claw member 62 is gradually decreased, so that the moving printed wiring board 2 is relative to the claw member 62 by an interval L2 due to inertial force. To the downstream side in the transport direction, and comes into contact with the claw member 62 located on the downstream side in the transport direction from the rear. At this time, since the printed wiring board 2 contacts the claw member 62 that is moving while the speed is gradually reduced, the electronic component does not move even if the electronic component is mounted in advance. Thereafter, the printed wiring board 2 stops together with the moving members 64 and 65 while maintaining the state in contact with the claw member 62 on the downstream side in the transport direction as described above. 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 62 is being decelerated. The printed wiring board 2 stops together with the claw member 62 while maintaining contact with the claw member 62 located on the upstream side in the transport direction.

After the transfer is completed, the substrate transfer control device 40 swings the claw member 62 to move it to the retracted position, and moves the moving members 64 to 73 to the initial positions.
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 transport position is transported onto the conveyor 34 of the second mounting unit 4 by the substrate moving device 14. At the time of this conveyance, 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, five printed wiring boards 2 are simultaneously conveyed by the substrate moving device 14 in a state where the conveyors 34 of the respective mounting units 3 to 6 are positioned on the conveyance path 51.

  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. Therefore, the front and rear claw members 62 and 62 of the first transport unit 111 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, in each of the transport units 111 to 115, one moving member is set to the length of the printed wiring board 2 with respect to the other moving member. Move to match. By the movement of the driving member, the distance between the front claw member 62 and the rear claw member 62 in each of the transport units 111 to 115 changes according to the printed wiring board 2.

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 moving 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 55, 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 including the substrate moving device 14 configured as described above, the claw member 62 is driven by the hollow motor 76 provided in each of the first to tenth moving members 64 to 73. Is moved together with the moving members 64 to 73, the printed wiring board 2 can be conveyed. The position of the claw member 62 can be easily changed by driving by the hollow motor 76.

  For this reason, in the surface mounter 1 according to this embodiment, it is not necessary to perform a special setup change work when transporting the printed wiring board 2 having different lengths in the transport direction. As a result, according to this embodiment, it is possible to manufacture the surface mounter 1 with high productivity even when the printed wiring board 2 having a different length in the transport direction is transported.

  Further, according to this embodiment, since each claw member 62 is moved by driving the hollow motor 76, the printed wiring board is correctly conveyed to each conveyance position of the first to fourth mounting units 3-6. Can do. Since the movement of the claw member 62 can be controlled for each printed wiring board 2 when transporting the plurality of printed wiring boards 2, the moving distance of the printed wiring board 2 can be changed according to the mounting position. It is possible to easily change the timing of movement of the printed wiring board 2 such as sequentially transporting from the printed wiring board 2 ready for transport.

  Therefore, according to this embodiment, when the printed wiring board 2 is transported, the degree of freedom of the printed wiring board 2 in the transport direction, such as the length in the transport direction, the travel distance, and the travel timing is increased. Since it is not necessary to stop the component mounting operation more than necessary, the surface mounter 1 with high productivity can be manufactured.

  Moreover, the board | substrate movement apparatus 14 by this embodiment can convey the some printed wiring board 2 synchronizing. For this reason, the surface mounter 1 according to this embodiment can be equipped with a plurality of mounting portions, and the printed wiring board 2 can be transported and positioned in these mounting portions, respectively. As a result, the mounting efficiency is further improved.

In the surface mounter 1 according to this embodiment, the printed wiring board 2 can be transported by moving the claw member 62 in the transport direction by driving the hollow motor 76 with the claw member 62 positioned at the feed position. Further, according to the surface mounter 1, the claw member 62 is positioned at the retracted position after the printed wiring board 2 is conveyed, and the printed wiring board 2 is moved in the direction opposite to the conveying direction by driving the hollow motor 76. It is possible to return the claw member 62 to the initial position before the conveyance while avoiding the interference.

For this reason, in the surface mounter 1 according to this embodiment, the moving members 64 to 73 that support the claw member 62 move only in the direction parallel to the transport direction of the printed wiring board 2. As a result, in this surface mounting machine 1, the substrate moving device 14 is configured in comparison with the conventional surface mounting machine 1 configured to move the movable arm supporting all the claw members 62 between the feeding position and the retracted position. It can be operated at high speed, and the mounting efficiency can be further improved.

  In the surface mounter 1 according to this embodiment, the front side moving members 65, 67, 69, 71, 73 having claw members 62 facing the end surface on the downstream side in the transport direction in the printed wiring board 2, and the printed wiring board 2 Rear side moving members 64, 66, 68, 70, 72 having claw members 62 facing the end face on the upstream side in the transport direction are provided. Therefore, according to the surface mounting machine 1, at least one of the front side moving members 65, 67, 69, 71, 73 and the rear side moving members 64, 66, 68, 70, 72 is moved to the other side. By moving the member relative to the member, the distance between the claw member 62 located on the downstream side in the transport direction and the claw member 62 located on the upstream side in the transport direction can be easily changed. For this reason, in the surface mounter 1 according to this embodiment, the time required for so-called setup change can be shortened when the printed wiring board 2 having different lengths in the conveyance direction is conveyed.

  In the surface mounter 1 according to this embodiment, five pairs of transport units (first to fifth transport units 111 to 115) configured in the transport direction of the printed wiring board 2 are configured by the front side moving member and the rear side moving member. ) Equipped. For this reason, according to this surface mounting machine 1, the five printed wiring boards 2 can be conveyed synchronously. As a result, according to the surface mounter 1 according to this embodiment, a plurality of mounting portions (first to fourth mounting units 3 to 6) can be provided, and printed wiring boards are respectively mounted on these mounting portions. Since 2 can be conveyed and positioned, mounting efficiency can be further improved.

  In the surface mounter 1 according to this embodiment, the transport stroke when transporting the moving members 64 to 73 can be changed for each transport unit 111 to 115. For this reason, the printed wiring board 2 can be positioned in the vicinity of the tape feeder 25 that is frequently used among the many tape feeders 25 provided in the mounting units 3 to 6. As a result, according to the surface mounter 1, the moving distance when the head unit 45 reciprocates between the tape feeder 25 and the printed wiring board 2 when mounting electronic components can be shortened. Can be further improved.

  In the surface mounter 11 configured as described above, all the mounting units 3 to 6 are arranged in a staggered pattern in a plan view and arranged in the X direction, and there is one conveyance path extending in the X direction. Therefore, size reduction can be achieved in the Y direction. Further, in the surface mounter 11 according to this embodiment, a part of the adjacent mounting unit is disposed in a space formed on the opposite side across the conveyance path 51 with respect to each mounting unit 3 to 6. . For this reason, according to this surface mounting machine 11, although the some mounting units 3-6 have taken the structure arranged in a X direction, size reduction can be achieved also in a X direction. Therefore, the surface mounter 1 according to this embodiment can achieve high productivity and can be manufactured compactly.

According to the surface mounter 1 including the board moving device 14 configured as described above, the claw member 62 is swung to the feed position by the cylinder 77, and the printed wiring board 2 is sandwiched between the pair of claw members 62. Thus, the printed wiring board 2 can be transported by moving the moving members 64 to 73 to the downstream side in the transport direction by driving the hollow motor 76. When the printed wiring board 2 is stopped and positioned during the conveyance, the rotation speed of the hollow motor 76 can be gradually decreased by the stopping means 125.

For this reason, in this board moving device 14, since the electronic component already mounted when the printed wiring board 2 is stopped can be prevented from moving due to inertia, the speed during conveyance can be increased. The mounting efficiency can be improved as compared with a conventional surface mounting machine that stops by being brought into contact with the surface mounting machine.
In the surface mounter 1 according to this embodiment, since the printed wiring board 2 can be correctly stopped at the predetermined stop position in this way, the printed wiring board is not within the field of view of the board recognition camera 49 of the head unit. Since the fiducial mark can be positioned, the position of the printed wiring board can be reliably detected.

  The conveyor 34 mounted on the first to fourth mounting units 3 to 6 of the surface mounter 1 according to this embodiment is located at a position where the fixed-side conveyor 34a is close to the electronic component supply device 26, and is movable. The conveyor 34b is configured to be located at a position away from the electronic component supply device 26. For this reason, according to this surface mounting machine 1, the distance between the printed wiring board 2 on the conveyor 34 and the electronic component supply device 26 is changed by moving the table 32 having the conveyor 34 to the mounting position. Since it can always be shortened without being affected by the length in the Y direction, the mounting efficiency can be improved.

(Second Embodiment)
The transport unit of the surface mounter according to the present invention can be configured as shown in FIGS.
18 and 19 are side views showing other embodiments of the transport unit. In these figures, the same or equivalent members as those described with reference to FIGS. Description is omitted as appropriate.

The transport unit 131 shown in FIG. 18 includes a transport moving member 132 that is movably supported by the ball screw shaft 63, and a front side movement that is supported by the transport moving member 132 via a bracket 133 and a ball screw shaft 134. A member 135 and a rear moving member 136 are included.
Although not shown, the transfer moving member 132 includes a ball nut that is screwed onto the ball screw shaft 63 and a hollow motor that rotates the ball nut. These ball nuts and hollow motors have the same structure as the hollow motor 76 shown in the first embodiment.

The front side moving member 135 and the rear side moving member 136 have the same structure as the moving members 64 and 65 shown in the first embodiment, and are provided with claw members 62, respectively.
In the transport unit 131, when transporting the printed wiring board 2, the transport moving member 132 moves by a predetermined transport stroke. Further, when the interval between the claw members 62 is changed in accordance with the length of the printed wiring board 2 in the conveying direction, it is performed by moving at least one of the front side moving member 135 and the rear side moving member 136.

A transport unit 141 shown in FIG. 19 includes a transport moving member 142 movably provided on the ball screw shaft 63, a first claw member 144 supported by the transport moving member 142 via a bracket 143, The second claw member 145 is supported by the bracket 143 so as to be movable in the transport direction.
The transfer moving member 141 has the same structure as the transfer moving member 132 shown in FIG.

The first claw member 144 is attached to the bracket 143 so as not to move in the transport direction. The first claw member 144 is configured to swing between the feed position and the retracted position by driving by the cylinder 77, as in the case of the first embodiment.

The second claw member 145 is configured to swing between the feed position and the retracted position by driving by the cylinder 77, as in the case of adopting the first embodiment. Further, the second claw member 145 is connected to the interval changing cylinder 146, and is driven away from the first claw member 144 by a position driven by the cylinder 146. And reciprocating between the two positions.

  That is, the transport unit 141 shown in FIG. 19 can transport two types of printed wiring boards having different lengths in the transport direction. In addition, in this conveyance unit 141, the form which positions the 1st nail | claw member 144 in the upstream of a conveyance direction, or the form which positions the 2nd claw member 145 in the upstream of a conveyance direction can be taken.

(Third embodiment)
In the first embodiment described above, the surface mounting machine including the 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. 20 is a plan view showing another example of the surface mounter. In these drawings, members that are the same as or equivalent to those described with reference to FIGS. 1 to 17 are given the same reference numerals, and detailed descriptions thereof are omitted as appropriate.

  The surface mounter 1 shown in FIG. 20 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 board moving 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 62 so that at least two printed wiring boards 2 can be simultaneously conveyed.
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 the bar-shaped claw member 62 has been shown. However, the shape of the contact member is such that the width in the Y direction is wider than that of the claw member 62. The plate-like one formed or a lattice-like one having a plurality of vertical members extending in the vertical direction can be appropriately changed.

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 perspective view of a substrate moving device. It is sectional drawing of a hollow motor. It is the IX-IX sectional view taken on the line of the hollow motor in FIG. 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 feed position. 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 sending 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 movement apparatus. It is a side view which shows other embodiment of a conveyance unit. It is a side view which shows other embodiment of a conveyance unit. It is a top view which shows the other example of a surface mounter.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Surface mounter, 2 ... Printed wiring board, 3 ... 1st mounting unit, 4 ... 2nd mounting unit, 5 ... 3rd mounting unit, 6 ... 4th mounting unit, 14 ... Board moving apparatus, DESCRIPTION OF SYMBOLS 26 ... Electronic component supply device, 27 ... Electronic component moving device, 33 ... Y direction drive device, 34, 53 ... Conveyor, 37 ... Substrate conveyance control device, 42 ... Support member, 45 ... Head unit, 48 ... Suction head, DESCRIPTION OF SYMBOLS 51 ... Conveyance path, 63 ... Ball screw shaft, 62 ... Claw member, 64-73 ... Moving member, 76 ... Hollow motor, 77 ... Cylinder, 111-115 ... 1st-5th conveyance unit, 125 ... Stop means, 131, 141... Transport unit, 201-204.

Claims (7)

A conveyance path forming member that supports the printed wiring board to be movable in the conveyance direction;
In a surface mounter including a substrate moving device that moves a printed wiring board in a conveying direction by a contact member that contacts the printed wiring board placed on the conveying path forming member,
The substrate moving device includes a ball screw shaft provided so as to extend in a transport direction;
A plurality of ball nuts screwed onto the ball screw shaft;
A plurality of hollow motors for driving the ball nuts, respectively, and a plurality of moving members that move in parallel along the ball screw shaft by driving by the hollow motors ;
Each of the plurality of moving members is provided with at least one contact member and a sensor for detecting the position of the printed wiring board located on the transport path forming member,
A surface mounting machine comprising: a distance setting means for moving the contact member based on a position of the printed wiring board detected by the sensor . The surface mounter according to claim 1,
One contact member is arranged on each of two moving members adjacent to each other in the transport direction, and the contact member on the upstream side in the transport direction is opposed to the end surface on the upstream side in the transport direction of the printed wiring board. A surface mounting machine characterized in that the abutting member is opposed to the end face of the printed wiring board on the downstream side in the conveying direction. In the surface mounting machine according to claim 2,
A front side moving member provided with a contact member facing the end surface on the downstream side in the conveyance direction of the printed wiring board, and a rear side movement provided with a contact member facing the end surface on the upstream side in the conveyance direction of the printed wiring board. A surface-mounting machine comprising: a conveyance unit configured by a member arranged side by side in a conveyance direction of a printed wiring board. 4. The surface mounter according to claim 1, wherein the contact member moves between a feeding position close to the printed wiring board and a retracted position spaced apart from the printed wiring board. A surface-mount machine characterized by being made possible. In the surface mounter according to any one of claims 1 to 4,
Place the substrate moving device above the base,
The transport path forming member can be reciprocated between a transport position below the substrate moving device and a mounting position separated from the transport position in a second direction orthogonal to the first direction of the transport direction. On the base,
This transport path forming member;
An electronic component supply device provided on a base opposite to the transport position with the mounting position of the transport path forming member as a boundary;
A printed wiring board on the conveyance path forming member at the mounting position is moved from the electronic component supply device by moving a suction head for sucking electronic components in the first direction and the second direction above the base. A plurality of mounting units each including an electronic component moving device for moving an electronic component thereon are mounted on the base in a first direction,
A surface mounting machine characterized in that a moving member in which a contact member capable of abutting against another printed wiring board is arranged in the substrate moving device is arranged in the carrying direction in the same number as a plurality of mounting units.   6. The surface mounting machine according to claim 5, wherein a front moving member provided with a contact member facing the end surface on the downstream side in the transport direction of the printed wiring board and a contact surface facing the end surface on the upstream side in the transport direction of the printed wiring board. A surface mounting machine characterized in that a transport unit constituted by a rear moving member provided with a contact member is arranged in the same transport direction as the number of a plurality of mounting units. In the surface mounter according to claim 5 or 6,
The substrate moving device is disposed above the central portion in the second direction of the base,
A mounting unit in which the electronic component supply device, the mounting position of the transport path forming member, and the electronic component moving device are arranged on one side in the second direction with the central portion in the second direction of the base as a boundary;
An electronic component supply device, a mounting position of the transport path forming member, and a mounting unit in which the electronic component moving device is disposed on the other side in the second direction with the central portion in the second direction of the base as a boundary. Alternately arranged in the direction,
Two mounting units adjacent to each other in the first direction among the plurality of mounting units are positioned in a staggered pattern in plan view by shifting the other mounting unit in the first direction with respect to one mounting unit. Equipped and
A surface mounting machine characterized in that the transport path forming members of these mounting units are arranged in the first direction in a state of being positioned at a transport position and constitute a transport path of a printed wiring board.

Images