JP4809141B2 - Surface mount machine - Google Patents

Description

  The present invention relates to a surface mounter in which mounting areas for mounting electronic components on a printed wiring board are provided on both sides of a conveyance path of the printed wiring board.

  As a conventional surface mounter of this type, there is one disclosed in Patent Document 1, for example. The surface mounting machine shown in Patent Document 1 is composed of a printed wiring board transporting conveyor positioned at the center of the base in plan view, and tape feeders provided on both sides of the conveyor. The electronic component supply device includes a set and an electronic component moving device that moves the electronic component from the electronic component supply device to the printed wiring board on the conveyor.

  The said conveyor is comprised from the 1st conveyor located in the upstream of a conveyance direction, and the 2nd conveyor located in the downstream of a conveyance direction. These first and second conveyors are supported by a Y-direction moving device provided on the base, and are driven by the Y-direction moving device to convey a direction (hereinafter, this direction is simply referred to as the X direction). Moves in an orthogonal direction (hereinafter, this direction is simply referred to as the Y direction).

  The electronic component moving device includes a support member formed in a shape extending in the X direction and supported by a base so as to be movable in the Y direction, a Y direction driving device for moving the support member in the Y direction, The head unit is supported by a support member so as to be movable in the X direction and includes a suction head for sucking an electronic component, and an X direction driving device for moving the head unit in the X direction. Two electronic component moving apparatuses are provided in a state of being arranged in the Y direction.

  In this conventional surface mounter, the printed wiring board is conveyed onto both conveyors in a state where the first conveyor and the second conveyor are aligned in the X direction on the center of the base. The first conveyor moves in the Y direction by driving by the Y-direction moving device so as to approach one electronic component supply device, and the second conveyor moves so as to approach the other electronic component supply device. It moves in the opposite direction to the first conveyor by driving by the direction moving device. In this manner, the electronic components are mounted on the printed wiring board in a state in which both conveyors are moved to one side and the other side in the Y direction.

  The electronic component is mounted by transferring the electronic component from one electronic component supply device to the printed wiring board on the first conveyor by one electronic component moving device among the two electronic component moving devices. This electronic component moving device transfers the electronic component from the other electronic component supply device onto the printed wiring board on the second conveyor.

After mounting the electronic components on the printed wiring board in this way, the first and second conveyors move onto the center of the base so that these conveyors are aligned in the X direction. The wiring board is transported downstream in the transport direction.
JP 2002-198693 A

  The conventional surface mounter configured as described above has a problem that it is not possible to improve productivity by increasing the speed at which the printed wiring board is conveyed. This is because the first conveyor and the second conveyor each include a belt driving device so that the printed wiring board can be conveyed. In other words, since such a driving device is provided, the first and second conveyors, which are heavy in weight, cannot be moved quickly in the Y direction.

  The present invention has been made in order to solve such problems, and has a structure in which a mounting area is provided on the side of the printed circuit board conveyance path, and the printed circuit board moves at high speed and has high productivity. An object is to provide a mounting machine.

In order to achieve this object, a surface mounting machine according to the present invention is provided on a base and supports a printed circuit board so as to be movable in the conveying direction, and above the conveying path forming member . A printed circuit board supported on the base via the center frame extending in the transport direction and mounted on the transport path forming member is a rear contact member positioned on the upstream side in the transport direction and a front side positioned on the downstream side A substrate moving device that is moved in the conveying direction by an abutting member, and the substrate moving device is provided with a conveying unit including the rear abutting member and the front abutting member arranged side by side in the conveying direction, and the conveying path The 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 which is the transport direction. Structure The base of the transport path forming member, an electronic component supply device provided on the base on the opposite side of the transport position from the mounting position of the transport path forming member, and a suction head for sucking electronic components An electronic component moving device that moves the electronic component from the electronic component supply device to a printed wiring board on a conveyance path forming member at a mounting position by moving the electronic component upward in the first direction and the second direction; A plurality of mounting units mounted in the first direction on the base; the center frame is positioned directly above the transport path forming member at the transport position; and the substrate moving device includes the plurality of mounting units The number of transport units is the same as the number of units, and these transport units are supported by the center frame so as to be movable in the transport direction .

  A surface mounter according to a second aspect of the present invention is the surface mounter according to the first aspect, wherein at least one of the pair of front contact members and the rear contact member is contacted with the other contact member. The apparatus includes an interval changing device that approaches and separates the member.

  According to a third aspect of the present invention, there is provided the surface mounting machine according to the first or second aspect, wherein the substrate moving device includes a conveying position where each contact member faces the end face of the printed wiring board. And a contact member driving device that moves between a retracted position that is spaced upward from the conveyance path 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 substrate moving device is located above the central portion in the second direction of the base. A mounting unit disposed on one side and the other side of the second direction with a central portion in the second direction of the base as a boundary, and a mounting unit positioned on one side of the second direction; The mounting unit positioned in the other of the two directions is positioned at a position shifted in the first direction, and is disposed so as to be positioned in a staggered pattern in plan view.
The surface mounter according to a fifth aspect of the present invention is the surface mounter according to the fourth aspect, wherein the transport path forming member of each mounting unit is a ball screw for a transport path forming member extending in the second direction. The suction head provided in the electronic component moving device of each mounting unit moves in the second direction by rotating a shaft, and the electronic component moving device ball extending in the second direction The screw shaft is moved in the second direction by rotating, and for the transport path forming member provided in the mounting unit located in one of the second directions among the plurality of mounting units. The electronic component moving device provided in the other end portion of the ball screw shaft in the second direction and the mounting unit located in the other of the plurality of mounting units in the second direction. The one end of the second direction in use the ball screw shaft, in which is formed so as to overlap each other in the second direction.

  According to the present invention, since the printed wiring board is conveyed by the front contact member and the rear contact member, it is not necessary to provide a driving device for conveying the printed wiring board on the conveyance path forming member. The forming member can be moved in the second direction at a higher speed than the conventional surface mounter. Moreover, according to this invention, the speed which conveys a printed wiring board can be made faster compared with the conventional surface mounting machine. This is because, when a printed wiring board is conveyed by a conveyor as in a conventional surface mounter, if the conveyance speed is increased, the printed wiring board may advance more than necessary due to inertia during stoppage. This is because the apparatus can prevent the printed wiring board from advancing excessively by the front contact member.

In the surface mounting machine according to the present invention, when the printed wiring board is transported and stopped by the board moving device, the speed is gradually decreased, so that some electronic components are previously placed on the printed wiring board by the surface mounting machine that performs the pre-process. Even when the electronic component is mounted, the electronic component can be prevented from moving due to inertia when stopped. For this reason, according to this invention, the conveyance speed of a printed wiring board can be made high.
In addition, according to the present invention, since a plurality of mounting units arranged in the first direction are provided while adopting a configuration in which a mounting area is provided on the side of the conveyance path of the printed wiring board, many printed wiring boards are provided. At the same time, electronic components can be mounted, and the mounting efficiency is increased.

  Therefore, according to the present invention, it is possible to provide a surface mounter that has a high speed of moving the printed wiring board and high productivity while adopting a configuration in which a mounting region is provided on the side of the conveyance path of the printed wiring board.

  According to the second aspect of the present invention, since the interval between the front contact member and the rear contact member can be easily changed by the interval changing device, when transporting printed wiring boards having different lengths in the transport direction. In addition, the time during which the substrate moving device is stopped can be shortened as much as possible. For this reason, according to this invention, the time required for so-called setup change can be shortened, and a surface mounter with higher productivity can be provided.

  According to the third aspect of the present invention, the printed wiring board can be transported by moving it in the transport direction with the contact member positioned at the transport position. Further, when the contact member is moved to the retracted position and moved in the transport direction, the contact member passes above the printed wiring board.

  For this reason, among the plurality of mounting units, for example, in the mounting unit positioned on the most downstream side in the transport direction, when mounting of the electronic component on the printed wiring board is completed earlier than the other mounting units, the mounting unit is positioned on the most downstream side. The printed wiring board of the mounting unit can be moved from the mounting position to the transport position and transported downstream by the substrate moving device. In other words, according to the present invention, the printed wiring board is transported downstream in the mounting unit positioned downstream in the transport direction without waiting until the mounting of the electronic components in the mounting unit positioned upstream in the transport direction is completed. Therefore, a surface mounter with higher productivity can be provided.

According to invention of Claim 4, a part of adjacent mounting unit can be arrange | positioned in the space formed in the other 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.

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

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

  FIG. 18 is a perspective view showing a state in which the printed wiring board is conveyed by a pair of claw members. In the figure, the conveyer is omitted. FIG. 19 is a side view for explaining the interval between the claw members, and FIG. 20 is a block diagram showing the configuration of the control system of the substrate moving apparatus. FIG. 21 is a block diagram showing an operation example for simultaneously transporting four printed wiring boards, and FIG. 22 is a block diagram showing an operation example for simultaneously transporting two printed wiring boards.

  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 present invention, and the Y direction is the second direction in the present invention.

  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. In this embodiment, the ball screw shaft 33a constitutes a “ball screw shaft for a conveyance path forming member” according to the invention of claim 5.

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). In this embodiment, the ball screw shaft 43b constitutes the “ball screw shaft for electronic component moving device” according to the invention of claim 5.

  The head unit 45 is provided with a substrate recognition camera 49 (see FIG. 2) for picking up an image of a fiducial mark (not shown) of the printed wiring board 2 from above and detecting the position of the printed wiring board 2. It has been.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  By the claw member 71 provided in the first, third, fifth, seventh, and ninth moving members 61, 63, 65, 67, and 69 in the first to fifth transport units 121 to 125, the present invention. In the present invention, the rear abutting member is formed, and the claw member 71 provided on the second, fourth, sixth, eighth, and tenth moving members 62, 64, 66, 68, and 70 is used. That is, a front contact member is formed.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  The printed wiring board 2 thus moved to the 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. For this reason, the front and rear claw members 71, 71 of the first transport unit 121 are maintained at the retracted position, or the table 52 on which the printed wiring board 2 having a different length in the loading device 12 is maintained at the loading position. Is done.

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

The mounting of the electronic components on the printed wiring board 2 is a method of mounting all the electronic components by sharing the first to fourth mounting units 3 to 6 on one printed wiring board 2 and one printed wiring. A method of mounting all electronic components on the board 2 by each mounting unit can be adopted.
The printed wiring board 2 that has been mounted in the fourth mounting unit 6 is transported by the board 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 54, and the printed wiring board 2 is sent from the conveyor 53 to a device that performs a post-process.

  According to the surface mounter 1 according to this embodiment, the printed wiring board 2 can be transported to the carry-out device 13 as shown in FIG. 21 or FIG. The operation example shown in FIG. 21 shows an example when the mounting of the electronic components is completed substantially simultaneously in all the mounting units 3 to 6. The operation example shown in FIG. 22 shows an example in which mounting is completed earlier than the first and second mounting units 3 and 4 in the third mounting unit and the fourth mounting unit 6. In these drawings, a printed wiring board on which mounting of electronic components is completed in each mounting unit is indicated by reference numeral 2A, and a printed wiring board being mounted is indicated by reference numeral 2B. Moreover, the printed wiring board sent to the 1st mounting unit 3 from the carrying-in apparatus 12 is shown with the code | symbol 2C.

  When the mounting is completed substantially simultaneously in all the mounting units 3 to 6 (FIG. 21A), the table 32 is moved from the mounting position to the transport position in each mounting unit 3 to 6, as shown in FIG. Moving. Thereafter, as shown in FIG. 6C, the printed wiring board 2A of each of the mounting units 3 to 6 and the printed wiring board 2C of the carry-in device 12 are moved to the downstream side in the transport direction by one pitch by the substrate moving device 14. Be made. In this case, the five printed wiring boards 2A and 2C are simultaneously conveyed.

  On the other hand, when the mounting operation is completed earlier in the third mounting unit 5 and the fourth mounting unit 6 than in the first and second mounting units 3 and 4 (FIG. 22A), FIG. As shown in FIG. 5, when the electronic components are mounted on the first and second mounting units 3 and 4, the table 32 moves from the mounting position to the transport position. Thereafter, as shown in FIG. 5C, the printed wiring boards 2A and 2A of the third mounting unit 5 and the fourth mounting unit 6 are moved by the seventh to tenth moving members 67 to 70 of the board moving device 14. Carries only one pitch. At this time, in the first to sixth moving members 61 to 66, all the claw members 71 are held at the retracted positions.

  The printed wiring board 2A conveyed from the fourth mounting unit 6 to the carry-out device 13 is sent to a subsequent process apparatus, and the printed wiring board 2A conveyed from the third mounting unit 5 to the fourth mounting unit 6 is The remaining electronic components are mounted by the fourth mounting unit 6, or the printed wiring board 2 </ b> A previously sent to the carry-out device 13 is carried out and then conveyed to the carry-out device 13. In the fourth mounting unit 6, when the mounting is completed earlier than the other three mounting units 3 to 5, or the second to fourth mounting units 4 to 6 perform the mounting operation from the first mounting unit 3. Even in the case of completion early, the transfer is performed without waiting for the completion of the mounting of the mounting unit being mounted as described above.

  In the surface mounter 1 configured as described above, the printed wiring board 2 is conveyed by the two claw members 71 and 71 located on the upstream side and the downstream side in the conveyance direction of the printed wiring board 2, and therefore the conveyor 34. Is not provided with a driving device for driving the endless belt 37. For this reason, according to this surface mounting machine 1, the table 32 which supports the conveyor 34 can be moved to a Y direction at high speed compared with the conventional surface mounting machine.

  Further, according to the surface mounting machine 1, when the printed wiring board 2 is conveyed and stopped by the board moving device 14, the front claw member 71 prevents the printed wiring board 2 from excessively moving downstream in the conveying direction due to inertia. Can be blocked. For this reason, according to this surface mounting machine 1, the speed which conveys the printed wiring board 2 can be made faster than the conventional surface mounting machine.

In the surface mounting machine 1 according to this embodiment, when the printed wiring board 2 is transported and stopped by the substrate moving device 14, the speed is gradually reduced, so that the surface mounting machine that performs the pre-process has previously applied the printed wiring board 2 onto the printed wiring board. Even when the electronic component is mounted, it is possible to prevent the electronic component from moving due to inertia when stopped. For this reason, according to this surface mounting machine 1, the conveyance speed of a printed wiring board can be made high.
In addition, the surface mounting machine 1 according to this embodiment has a configuration in which mounting positions (mounting regions) of the table 32 are provided on both sides of the conveyance path 51 of the printed wiring board 2, and a plurality of mounting units 3 arranged in the X direction. ˜6 are equipped, electronic components can be simultaneously mounted on the four printed wiring boards 2 and the mounting efficiency is high.

  Therefore, according to this embodiment, the surface mounter 1 having a high speed and high productivity of the printed wiring board 2 can be obtained while adopting a configuration in which mounting areas are provided on both sides of the conveyance path 51 of the printed wiring board 2. Can be manufactured.

  In the surface mounter 1 according to this embodiment, the interval between the front claw member 71 and the rear claw member 71 can be easily changed by driving by the interval changing drive device 92. For this reason, according to this surface mounting machine 1, the time for which the board | substrate moving apparatus 14 is stopped when conveying the printed wiring board 2 from which the length of a conveyance direction differs can be shortened as much as possible. For this reason, according to this embodiment, the time required for so-called setup change can be shortened, and the surface mounter 1 with higher productivity can be manufactured.

  In the surface mounter 1 according to this embodiment, the printed wiring board 2 can be transported by moving the claw member 71 in the transport direction with the claw member 71 positioned at the transport position. Further, in the surface mounting machine 1, the claw member 71 passes above the printed wiring board 2 by moving the claw member 71 to the retracted position and moving it in the transport direction.

  For this reason, among the first to fourth mounting units 3 to 6, for example, in the fourth mounting unit 6 located on the most downstream side in the transport direction, the mounting of electronic components on the printed wiring board 2 is another mounting unit. When completed earlier, the printed wiring board 2 of the mounting unit located on the most downstream side can be moved from the mounting position to the transfer position and transferred to the downstream side by the board moving device 14. In other words, according to the surface mounting machine 1, the printed wiring in the mounting unit located on the downstream side in the transport direction without waiting for the mounting of the electronic components in the mounting unit located on the upstream side in the transport direction. Since the plate can be conveyed to the downstream side, productivity can be further improved.

In the surface mounter 1 according to this embodiment, the first to fourth mounting units 3 to 6 are provided on the base 11 so as to be positioned in a staggered pattern in a plan view. On the other hand, a part of the adjacent mounting unit is disposed in a space formed on the opposite side across the conveyance path 51. For this reason, according to this embodiment, the four mounting units 3 to 6 can be compactly equipped in the X direction.
Therefore, according to this embodiment, the surface mounter 1 with high productivity and compactness can be manufactured.

(Second Embodiment)
In the first embodiment described above, the surface mounting machine including four mounting units arranged in a staggered pattern in a plan view has been described, but the surface mounting machine according to the present invention, as shown in FIG. It can also be applied to a surface mounter equipped with four mounting units.
FIG. 23 is a plan view showing another example of the surface mounter. In these drawings, the same or equivalent members as those described with reference to FIGS. 1 to 20 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

  The surface mounting machine 1 shown in FIG. 23 is equipped with four mounting units 201 to 204 arranged in the X direction and the Y direction, and a plurality of transport paths 51 are formed in the center in the Y direction. Conveyors 205-211 are provided. These conveyors 205 to 211 have the same structure as the conveyors 34 and 53 of the support device 24 shown in the first embodiment.

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

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

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

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

The substrate 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 71 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 embodiments described above, an example in which the contact member is configured by the bar-shaped claw member 71 has been described. However, the shape of the contact member is such that the width in the Y direction is wider than that of the claw member 71. 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 side view of a substrate moving device. It is sectional drawing which shows the drive system at the time of conveyance. It is sectional drawing which shows a drive system when changing the space | interval of a nail | claw member. It is a longitudinal cross-sectional view of the drive unit for board | substrate movement apparatuses. It is a longitudinal cross-sectional view which shows a part of drive unit. It is a perspective view which expands and shows the drive unit of a board | substrate movement apparatus. It is a perspective view which shows the nail | claw member and cylinder which are located in a retracted position. It is a perspective view which shows the nail | claw member and cylinder which are located in a conveyance position. It is a front view which expands and shows the support part of a nail | claw member. It is a side view which shows the state which moved the nail | claw member to the retracted position. It is a side view which shows the state which positioned the nail | claw member in the conveyance position. It is a perspective view which shows the state which conveys a printed wiring board with a pair of nail | claw member. It is a side view for demonstrating the space | interval of a nail | claw member. It is a block diagram which shows the structure of the control system of a board | substrate movement apparatus. It is a block diagram which shows the operation example which conveys four printed wiring boards simultaneously. It is a block diagram which shows the operation example which conveys two printed wiring boards simultaneously. It is a top view which shows the other example of a surface mounter.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Surface mounting machine, 2 ... Printed wiring board 2, 3 ... 1st mounting unit, 4 ... 2nd mounting unit, 5 ... 3rd mounting unit, 6 ... 4th mounting unit, 14 ... Board moving apparatus , 16 to 21 ... Y frame, 23 ... center frame, 26 ... electronic component supply device, 27 ... electronic component moving device, 33 ... Y-direction drive device, 34,53 ... conveyor, 40 ... substrate transfer control device, 42 ... Support member, 45 ... head unit, 48 ... adsorption head, 51 ... conveyance path, 71 ... claw member, 61-70 ... first to tenth moving members, 72 ... drive unit, 81 ... conveyance drive device, 92 ... Interval change drive device, 121-125, first to fifth transport units, 135, stop means, 201-204, mounting unit.

Claims (5)

A conveyance path forming member provided on the base and supporting the printed wiring board so as to be movable in the conveyance direction;
Rear contact that is supported by the base via a center frame extending in the transport direction above the transport path forming member and that places the printed wiring board placed on the transport path forming member on the upstream side in the transport direction A substrate moving device that moves in the transport direction by the member and the front abutting member located on the downstream side,
In the substrate moving device, a transport unit composed of the rear contact member and the front contact member is arranged in the transport direction,
The transport path forming member is 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 which is the transport direction. Configured to be movable,
This transport path forming member;
An electronic component supply device provided on the base on the side opposite to the transport position with the mounting position of the transport path forming member as a boundary;
Printed wiring on a conveyance path forming member at a mounting position from the electronic component supply device by moving a suction head for sucking electronic components above the base in the first direction and the second direction. A plurality of mounting units each having an electronic component moving device to be moved to a plate are mounted on the base in a first direction;
The center frame is located directly above the transport path forming member at the transport position,
The substrate moving device includes the same number of transport units as the plurality of mounting units ,
These transport units are supported by the center frame so as to be movable in the transport direction .   2. The surface mounter according to claim 1, further comprising an interval changing device that causes at least one of the pair of front contact members and rear contact member to approach and separate from the other contact member. A surface-mount machine characterized by In the surface mounting machine according to claim 1 or 2,
The substrate moving device has a contact member driving device that moves each contact member between a transport position facing the end face of the printed wiring board and a retreat position spaced upward from the transport path of the printed wiring board. A surface-mount machine characterized by In the surface mounter according to any one of claims 1 to 3,
The substrate moving device is disposed above the central portion in the second direction of the base,
The mounting units are respectively disposed on one side and the other side in the second direction with the central portion in the second direction of the base as a boundary,
The mounting unit located on one side in the second direction and the mounting unit located on the other side in the second direction are positioned so as to be shifted in the first direction and arranged so as to be staggered in plan view. A surface mounting machine characterized by being installed. In the surface mounting machine according to claim 4,
The transport path forming member of each mounting unit is moved in the second direction by rotation of the ball screw shaft for the transport path forming member extending in the second direction.
The suction head provided in the electronic component moving device of each mounting unit moves in the second direction as the ball screw shaft for the electronic component moving device extending in the second direction rotates. ,
Of the plurality of mounting units, the other end portion in the second direction of the ball screw shaft for the conveyance path forming member provided in the mounting unit located in one of the second directions;
Of the plurality of mounting units, one end portion in the second direction of the ball screw shaft for the electronic component moving device provided in the mounting unit located in the other of the second directions is,
The surface mounter is formed so as to overlap each other in the second direction.

Images