JP4950831B2 - Substrate transfer conveyor - Google Patents

Description

  The present invention relates to a conveyor that conveys a printed circuit board, and in particular, supports the both side edges in the width direction of the printed circuit board by a pair of circumferential belts, and conveys the printed circuit board along a linear conveyance path. Concerning conveyors.

This type of substrate transport conveyor is described in, for example, Patent Document 1 below. Each of the pair of circling belts is wound around a plurality of guide pulleys, part of which is provided with a linear part, and both parallel side edges of the printed circuit board are supported from below by the linear part, and are circulated by a belt circulator. As a result, the printed circuit board is transported along a straight transport path.
JP 2002-173214 A

However, the conventional substrate transfer conveyor has various problems.
For example, when the substrate transport conveyor includes a pair of guide members and guides the side surfaces of both side edges of the printed circuit board, the side edges are caught in the gap between the guide member and the circulating belt, preventing the transport. May be. Both side edges of the printed circuit board are supported by inner parts, which are parts of the pair of circumferential belts that are close to each other, and the width of the side edges necessary for transporting and supporting the printed circuit board is minimized. As a result, an increase in the size of the printed circuit board is avoided. Therefore, the guide member is provided so as to cover the outer part which is a part on the far side of the pair of circulating belts and guides the side surface of the side edge portion of the printed circuit board. In this case, the gap is provided with a gap that allows the rotation. This gap is made as small as possible, but if the printed circuit board is thin, the side edge portion may be caught in the gap between the circulating belt and the guide member. In addition, there is a problem that the gap between the guide pulley and the guide member is narrow, and it is difficult to attach and remove the orbiting belt to and from the guide pulley.
Furthermore, when the printed board is supported from below by the board support device, both side edges of the printed board cannot be supported because they are placed on the belt, and work can be performed on the surfaces of the side edges. There are cases where it is not possible.
The present invention has been made against the background of the above circumstances, and an object of the present invention is to solve at least one of the problems existing in the substrate transport conveyor and obtain a more practical substrate transport conveyor.

The above problem is a printed circuit board, each of the side edge portions in the width direction of the printed circuit board is supported by a pair of orbiting belts, a substrate conveyor for conveying along a straight conveying path, the pair of revolving belts for, (a) along said conveying path, and the three or more upper guide pulley arranged at intervals from one another, each other in a direction parallel to the transport path of those three or more upper guide pulley Two or more lower guide pulleys disposed between two adjacent ones and below each of the upper guide pulleys, and each of the pair of circulating belts includes one or more of the upper guide pulleys after wound from above, wrapped around from below to one or more of the lower guide pulley, then, that is wound from above another in one or more of the upper guide pulley A belt guide device for a state of meandering part of the lap belt in two or more places, be between every two mutually adjacent (b), the three or more upper guide pulley, the circumferential belt Each of the two upper guide pulleys adjacent to each other, each disposed in two or more lower passage regions, each of which is guided by the two or more lower guide pulleys and passes below the conveyance path. Two or more board guide members each having a board guide surface for guiding a side surface of each one side edge of the printed circuit board in which each one of the both side edges is supported by the circumferential belt guided by Each of the board guide surfaces continuously extending from the upper side to the lower side of each one of the side edges of the printed circuit board at the position of the intermediate part in the width direction of the circuit belt; and (c) the circuit board Be DOO, is solved by as comprising a conveyor rail that supports the belt guide apparatus and a substrate guide member.

The printed circuit board is transported with the side edges supported by portions of the orbiting belt wound around three or more upper guide pulleys. The part wound around the lower guide pulley of the orbiting belt is located below the conveying path, does not support the printed circuit board, does not exist in at least two places in the conveying direction of the printed circuit board, and the printed circuit board does not circulate. An unsupported portion that is not supported by the belt is obtained, and the use of the unsupported portion can solve at least one of various problems that have conventionally occurred in the substrate transfer conveyor.
For example, according to the substrate conveyor according to claim 1, the side surfaces of the side edges of the printed circuit board can solve the problems caused when guided by the substrate guide member, the substrate conveyor according to claim 2 Accordingly, it is possible to solve the problem that occurs when the printed circuit board is supported from below.

Aspects of the Invention

The following invention which is considered claimable (hereinafter referred to as "claimable invention". Claimable invention, Ru invention der described in the claims of the "present invention" Examples of subordinate concept inventions, superordinate concepts of the invention of the present application, and inventions of other concepts may be included). As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, the prior art, and the like. The added aspect and the aspect in which the constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention.

In each of the following items, (18) corresponds to claim 1, (19) in claim 2, (20) in claim 3, (21) in claim 4, (22) term to claim 5, their respective corresponding.

(1) A printed circuit board is a board conveyor that supports both side edges in the width direction of the printed circuit board by a pair of circumferential belts and conveys the printed board along a linear conveyance path,
Between two of the two or more upper guide pulleys arranged along the transport path and spaced apart from each other, and the two upper guide pulleys adjacent to each other in a direction parallel to the transport path, One or more lower guide pulleys disposed respectively below the upper guide pulley, and after one of the pair of circulating belts is wound around one or more of the upper guide pulleys from above, the lower guide pulley A belt guide device wound around one or more pulleys from below, and then wound around another one or more of the upper guide pulleys from above, with a part of one of the circulating belts meandering; ,
A substrate transfer conveyor including an apparatus main body for supporting the belt guide device.
Both the pair of circling belts may be guided by the belt guide device configured as described above, or only one of them may be guided.
Two or more upper guide pulleys and one or more lower guide pulleys can be arranged in various ways. For example, one lower guide pulley may be arranged between two adjacent upper guide pulleys, or two or more lower guide pulleys may be arranged, and one lower guide pulley is arranged. There may be both a spot and a place where two or more lower guide pulleys are arranged. When there are a plurality of locations where the two upper guide pulleys are adjacent to each other, and the lower guide pulleys are respectively disposed on them, the number of the lower guide pulleys at each location may not be the same. If two or more lower guide pulleys are arranged between two adjacent upper guide pulleys, for example, the length of the lower passage region to be described later in the transport direction can be increased.
Two or more upper guide pulleys may be provided continuously (with no lower guide pulley provided between two adjacent upper guide pulleys).
(2) A lower portion in which three or more upper guide pulleys are provided, two or more lower guide pulleys are provided, and the circulating belt is guided by the lower guide pulley and passes below the conveyance path. The substrate transfer conveyor as set forth in (1), wherein two or more passage areas are provided.
For example, if the upper guide pulley and the lower guide pulley are alternately arranged one by one, the printed circuit board is supported and conveyed by the circulating belt in at least three places separated in the conveyance direction, and the driving force is insufficient. The sagging due to the flexure of the printed circuit board is well avoided.
(3) A lower passage region between two adjacent ones of the two or more upper guide pulleys, wherein the one circulating belt is guided by the lower guide pulley and passes below the conveyance path. 1 that guides a side surface of one side edge portion of the printed circuit board in which one of the side edge portions is supported by one of the circulating belts guided by the two upper guide pulleys adjacent to each other. The substrate transfer conveyor according to item (1) or (2), which includes one or more substrate guide members.
The printed circuit board is stably conveyed in a posture parallel to the conveyance path by the side surface guidance by the substrate guide member.
There is no circulating belt in the portion corresponding to the lower passage area in the conveyance path, and the board guide member guides the side surface of the side edge of the printed circuit board in the part where there is no circulating belt. Therefore, the board guide member can be formed in a state extending continuously from the upper side to the lower side of the printed circuit board, and a gap is formed between the upper surface of the circulating belt and the lower surface of the board guide member as in the prior art. The problem of biting of the side edge portion of the printed circuit board does not occur, and the printed circuit board can be transported stably. Further, it is not necessary to strictly manage the gap between the lower surface of the substrate guide member and the upper surface of the circulating belt, and no friction is generated between the substrate guide member and the circulating belt.
Furthermore, attachment and removal of the belt from the upper and lower guide pulleys can be easily performed without being obstructed by the board guide member.
(4) Between the two adjacent ones of the two or more upper guide pulleys, in a lower passage region that is a region through which the circulating belt is guided by the lower guide pulley and passes below the conveyance path, An edge support member that is arranged to be raised and lowered at a raised position and a lowered position, respectively, and supports one of the both side edges of the printed circuit board from below at the raised position;
The substrate transport conveyor according to any one of (1) to (3), further comprising: an edge support member lifting / lowering device that lifts and lowers the edge support member between the raised position and the lowered position.
If both sides of the printed circuit board are supported from below by the linear portions of the pair of circulating belts as in the prior art, if an edge support member is provided, the linear portion of the circulating belt in the width direction of the printed circuit board Therefore, the width of the side edge necessary for transporting and supporting the printed circuit board is increased, and it is inevitable that the printed circuit board as a product becomes larger. On the other hand, in the board transfer conveyor of this section, the side edge necessary for the transfer of the printed board can be used for the support, and the enlargement of the printed circuit board can be avoided. . The side edge portion of the printed circuit board can be supported by the edge portion supporting member without the electronic circuit component being mounted on the lower surface thereof. In addition, if necessary, the side edge of the printed circuit board can also be firmly supported from below, so that it is possible to stably work on the side edge part as well. Can be secured.
(5) At least one negative pressure supply passage in which the edge support member is opened in an upward edge support surface perpendicular to the ascending / descending direction and guides negative pressure supplied from a negative pressure source to the edge support surface. (4) The board conveyance conveyor given in the paragraph.
Even if the side edge of the printed circuit board is not sandwiched between the upper and lower sides by the edge support member and the receiving member, the printed circuit board is maintained in a flat state without being lifted from the edge support surface.
(6) A plurality of the negative pressure supply passages are provided in the edge support member, and the negative pressure supply passages are opened in the edge support surface in a state of forming at least one row along the transport direction of the printed circuit board. The substrate transfer conveyor according to item (5).
A plurality of negative pressure supply passages supply a sufficient amount of negative pressure to the edge support surface, and the printed circuit board is reliably adsorbed and held. The plurality of negative pressure supply passages may be provided in a state of being arranged in a direction perpendicular to the conveyance direction. However, the dimension in the direction perpendicular to the conveyance direction of the supported portion of the side edge portion is more preferable when provided along the conveyance direction. It is possible to obtain a sufficient amount of negative pressure for holding while avoiding an increase in the pressure.
(7) A substrate support device that is provided between the pair of circulation belts and that can move up and down between a raised position and a lowered position at a position corresponding to an intermediate portion in the transport direction of the printed board. When,
The substrate transport conveyor according to any one of (1) to (3), including a substrate support device lifting device that lifts and lowers the substrate support device.
Even if the printed circuit board is thin and flexible, when the work surface is subjected to work, the board support device prevents the board from being bent downward and the work is performed with high accuracy. High quality products can be obtained.
(8) It is provided between the pair of circulation belts and at a position corresponding to an intermediate portion in the transport direction of the printed circuit board so that it can be moved up and down between a raised position and a lowered position. An intermediate part support device for supporting the intermediate part which is a part between;
(4) to (6), wherein a drive source of the intermediate support device lifting device also serves as a drive source of the edge support member lifting device. The board | substrate conveyance conveyor in any one of.
The edge support member is raised from the lowered position to the raised position in conjunction with the raising of the intermediate support device. A substrate transfer conveyor including the intermediate support device lifting device and the edge support member lifting device can be configured easily and inexpensively.
The features described in each of the following items (9) to (17) are characterized in that, as in the substrate transfer conveyor described in the above item (8), the driving source of the intermediate supporting device lifting device is the lifting and lowering of the edge supporting member. Although it is particularly effective in an aspect that also serves as a drive source of the apparatus, it can also be adopted in an aspect that does not serve as a driving source, and similar effects can be obtained respectively.
(9) including at least one receiving member arranged at a position higher than the upper guide pulley at least in the lower passage region, and the edge supporting member supports the side edge of the printed circuit board from below Then, the substrate transfer conveyor according to the item (8), which is a pressing member pressed against the receiving member.
The receiving member receives the side edge portion of the printed circuit board and sandwiches the side edge portion in cooperation with the pressing member, for example, to remove the warp of the printed circuit board and correct the posture so that the work surface becomes a flat surface. Functions as a posture correction member, or functions as a fixing member that fixes the printed circuit board when the side edge is held in cooperation with the pressing member while the printed circuit board is being operated Configure the device.
The receiving member may extend continuously in the transport direction and receive all of the side edges of the printed circuit board in the transport direction. When a plurality of lower passage regions are provided, a plurality of the corresponding members correspond to the plurality of lower passage regions. It is good also as what is provided in each of these places, is scattered in a conveyance direction, and receives several places of the side edge part of a printed circuit board partially. Since the receiving member is arranged at a position higher than the upper guide pulley, even if it is supposed to receive the entire side edge portion of the printed circuit board, it is less likely to prevent the winding belt from being wrapped around the upper guide pulley. If it is provided only on the belt, it is easier to wind the belt around the upper guide pulley. When only one lower passage region is provided, the receiving member may be provided in only one of the lower passage regions.
(10) The edge support member lifting device includes a holding unit that holds the edge support member, a driven unit that receives a driving force from the drive source, the driven unit, and the edge support member. The substrate transfer conveyor according to item (9), including an adjustment device for adjusting a relative position.
By adjusting the relative position between the edge support member and the driven part, for example, the rising position of the edge support member can be adjusted to appropriately support the side edges.
(11) The receiving member is made of a leaf spring having a thickness of 0.5 mm or less, a base end portion of the leaf spring is fixed to the leaf spring holding member, and the free end portion cooperates with the pressing member to The substrate transfer conveyor according to item (9) or (10), wherein the side edge portion of the printed circuit board is elastically sandwiched and held from both upper and lower sides.
The apparatus main body can be a leaf spring holding member, or a member that can move relative to the apparatus main body can be a leaf spring holding member.
The thickness of the leaf spring is often desirable as it is as thin as 0.5 mm or less, 0.3 mm or less, or 0.2 mm or less.
When the edge support member is raised to the raised position, if the side edge portion of the printed circuit board is sandwiched between the receiving member and then stopped at the slightly raised position, the rise is caused by the elasticity of the receiving member. The side edges can be securely held while being allowed by deformation and avoiding damage to the receiving member.
For example, when a receiving member is held in a state where the side edge portion of the printed circuit board is sandwiched in cooperation with the pressing member even during printing in a screen printer, the screen mask is printed on the printed surface of the printed circuit board at a location adjacent to the receiving member. However, if the receiving member is made of a thin leaf spring, the squeegee can be pressed against the screen mask from a position on the receiving member or a position adjacent to the receiving member.
(12) The edge support member lifting device includes a transmission device including a holding portion that holds the edge support member, a driven portion that receives a driving force from the drive source, and an elastic deformation portion, When the movement applied to the driven part from the driving source is always transmitted to the edge support member via the elastic deformation part, but the movement of the edge support member is blocked by the receiving member The substrate transfer conveyor according to any one of (9) to (11), wherein the movement from the drive source is absorbed by elastic deformation of the elastic deformation portion.
Even if the intermediate part support device is further lifted from the state in which the intermediate part support device is lifted by a large amount and the edge support member presses the side edge part of the printed circuit board against the receiving member, the edge support member is driven against the edge support member of the driven part. Since the relative movement is permitted by the elastic deformation of the elastic deformation portion, the printed circuit board is pressed against the receiving member with an excessive force, and the printed circuit board, the receiving member, the edge supporting member, and the like are prevented from being damaged. In the aspect in which this term is subordinate to the term (11), it is particularly effective that the elastically deforming portion fulfills a function of preventing the leaf spring from being damaged. The holding portion may be provided separately from the elastic deformation portion, or may be provided integrally with the elastic deformation portion.
(13) Items (9) to (12) including a receiving member moving device that moves the receiving member to an operating position facing the pressing member and a retracted position retracted from the operating position in a direction parallel to the printed circuit board. The substrate transfer conveyor according to any one of the items).
The retreat position may be outside the printed board in the width direction or outside the transport direction.
According to the substrate transfer conveyor described in this section, for example, the receiving member receives the side edge portion of the printed circuit board at the working position to remove the warp of the printed circuit board, and is moved to the retracted position during the operation. Can also be made to work.
(14) The substrate transport conveyor according to any one of (8) to (13), further including a substrate fixing device that fixes the printed circuit board sandwiched from both sides in the width direction.
This item is particularly effective when applied to the substrate transfer conveyor described in item (13), but is not limited thereto.
In an embodiment in which this item is subordinate to item (13), for example, by fixing the printed circuit board to the substrate fixing device in a state where the receiving member is located at the operating position, the receiving member is retracted to the retracted position, and the side edge portion is Even if it is not restrained, the movement of the printed circuit board can be satisfactorily prevented.
(15) The edge support member elevating device is located above the lower guide pulley and holds the edge support member; and the drive force from the drive source located below the lower guide pulley Any one of the items (8) to (14), including a driven member that receives the movable member, and a connecting portion that connects the holding portion and the driven portion and is held by the apparatus main body so as to be movable up and down. A substrate transport conveyor as described in Crab.
The holding portion may be configured integrally with the edge support member or may be configured separately from the edge support member. In the former case, a part of the holding portion functions as an edge support member. The driven portion may also be configured integrally with the movable member, or may be configured by a driven member that is separate from the movable member. According to the configuration of this section, it becomes easy to transmit the driving force from the driving source to the movable member below the lower guide pulley. The lower guide pulley may be provided below the movable member. However, the length of the circling belt is shorter when it is provided between the holding portion and the driven portion. Or it becomes easy to transmit the driving force from a drive source to a to-be-driven part.
(16) The apparatus main body includes a pair of conveyor rails each extending along the conveyance path, and one of the pair of conveyor rails holds the belt guide device on the inner side which is opposite to the other conveyor rail. The connecting portion of the movable member is disposed outside the one conveyor rail, and the holding portion and the driven portion penetrate through the one conveyor rail and enter the inside of the one conveyor rail. The substrate transfer conveyor as set forth in (15).
If the connecting portion is disposed outside the conveyor rail, it is easy to position the holding portion above the lower guide pulley and the driven portion below the lower guide pulley while avoiding the lower guide pulley.
Moreover, if a connection part is arrange | positioned on the outer side of a conveyor rail, the structure inside a conveyor rail can be simplified, for example.
Both of the pair of conveyor rails may hold the belt guide device inside, and the connecting portion of each movable member may be disposed outside the conveyor rail.
(17) The intermediate support device lifting device includes a lift that supports the intermediate support device and is lifted and lowered by the drive source, and the driven portion of the movable member is pushed up by the lift (16 Substrate transport conveyor as described in item).
The driven portion may be pushed up directly by the lifting platform or may be pushed up indirectly via another member fixed to the lifting platform, such as a support plate of the intermediate support device.
When a plurality of movable members are provided, the plurality of movable members can be simultaneously pushed up by the lifting platform.
(18) A printed circuit board is a board transfer conveyor that supports both side edges in the width direction of the printed circuit board by a pair of circulating belts and transports the printed circuit board along a linear transport path, each of the pair of circulating belts about,
Three or more upper guide pulleys arranged along the transport path and spaced apart from each other, and two of the three or more upper guide pulleys adjacent to each other in a direction parallel to the transport path And two or more lower guide pulleys respectively disposed below the upper guide pulleys, and each of the pair of circulating belts is wound around one or more of the upper guide pulleys from above. After being wound, it is wound around one or more of the lower guide pulleys from below, and then is wound around another one or more of the upper guide pulleys from above, so that a part of the circulating belt is placed at two or more places. A belt guide device in a meandering state at
In a region between two adjacent guide pulleys of the three or more upper guide pulleys, each of the circulating belts being guided by the two or more lower guide pulleys and passing below the conveyance path. Each one of the printed circuit boards that are respectively disposed in two or more lower passage areas and each of the side edges are supported by the circumferential belt guided by the two adjacent upper guide pulleys. Two or more substrate guide members each having a substrate guide surface for guiding the side surfaces of the side edge portions of the printed circuit board, wherein each of the substrate guide surfaces is positioned at an intermediate portion in the width direction of the circumferential belt. One continuously extending from the upper side to the lower side of each side edge of
A conveyor rail that supports the belt, the belt guiding device, and the board guiding member;
Including substrate transfer conveyor.
(19) Each of the two or more lower passage regions is disposed so as to be movable up and down at a raised position and a lowered position, and supports one of the side edges of the printed circuit board from below at the raised position. An edge support member;
An edge support member elevating device for elevating and lowering the edge support member between the raised position and the lowered position;
(8) The board | substrate conveyance conveyor as described in (18).
(20) Provided so as to be able to be raised and lowered to a raised position and a lowered position at a position between the pair of circulating belts and corresponding to an intermediate portion in the transport direction of the printed circuit board. An intermediate part support device for supporting the intermediate part which is a part between;
An intermediate support device lifting device for lifting and lowering the intermediate support device;
The substrate transport conveyor according to (19), wherein a drive source of the intermediate support device lifting device also serves as a drive source of the edge support member lifting device.
(21) The edge support member elevating device is positioned above the lower guide pulley and holds the edge support member; and the drive from the drive source is positioned below the lower guide pulley. A movable member that includes a driven part that receives force, a connecting part that connects the holding part and the driven part, and is held by the conveyor rail so as to be movable up and down, and supports the pair of circulating belts. One of the pair of conveyor rails holds the belt guide device on the inner side which is the side facing the other conveyor rail, and the connecting portion of the movable member is disposed on the outer side of the one conveyor rail, The substrate transfer conveyor according to item (20), wherein the holding portion and the driven portion pass through one of the conveyor rails and enter the inside of the one conveyor rail.
(22) The substrate guide surface is a plane parallel and perpendicular to the transport path, and the substrate guide member is adjacent to the substrate guide surface in a direction parallel to the transport path in addition to the substrate guide surface. The substrate transport conveyor according to any one of items (18) to (21), wherein the substrate transport conveyor has a pair of inclined surfaces that are inclined in a direction away from the printed circuit board as the distance from the substrate guide surface increases.

  Several embodiments of the claimable invention will now be described in detail with reference to the drawings. In addition to the following examples, the claimable invention can be practiced in various modifications based on the knowledge of those skilled in the art, including the aspects described in the above [Aspect of the Invention] section. .

  FIG. 1 schematically shows an electronic circuit component mounting system including a substrate transfer conveyor as one embodiment of the claimable invention. The electronic circuit component mounting system is a kind of substrate-to-board working system, and in this embodiment, the substrate transfer conveyor 10, a feeder-type component supply device 12 and a tray-type component supply device 14, which are types of component supply devices, and a mounting device, respectively. 16 and controller 18.

  As shown in FIG. 1, the substrate transport conveyor 10 is provided on a bed 30 as a system main body, and transports a printed circuit board 32 along, for example, a horizontal and linear transport path. Carry into the mounting area and unload from the component mounting area. The direction in which the transport path extends, the transport direction being the X-axis direction, and the direction perpendicular to the X-axis direction in the horizontal plane being the Y-axis direction. The substrate transfer conveyor 10 will be described in detail later. In the electronic circuit component mounting system, the feeder-type component supply device 12 and the tray-type component supply device 14 are respectively provided on both sides of the bed 30 separated from the substrate transfer conveyor 10 in the Y-axis direction.

  As shown in FIG. 1, the mounting device 16 includes a component mounting head 36 as a work head, a head holding device 38, a head moving device 40, a head lifting device (not shown), and a head rotating device (not shown). As shown in FIG. 1, the head moving device 40 includes an X-axis direction moving device 42 and a Y-axis direction moving device 44. The X-axis direction moving device 42 includes an X-axis slide 46 and an X-axis slide moving device 48 as movable members. The X-axis slide moving device 48 includes an X-axis moving motor (not shown) as a driving source and a ball screw mechanism (not shown) as a feed screw mechanism including a ball screw and a nut. The Y-axis direction moving device 44 is provided on the X-axis slide 46 and includes a Y-axis slide 50 and a Y-axis slide moving device 52 as movable members. Similar to the X-axis slide moving device 48, the Y-axis slide moving device 52 includes a Y-axis moving motor (not shown) as a drive source and a ball screw mechanism (not shown). The X-axis movement motor and the Y-axis movement motor are constituted by, for example, a servo motor with an encoder which is an electric rotary motor that is a kind of electric motor. The servo motor is an electric rotary motor capable of accurately controlling the rotation angle, and a step motor may be used instead of the servo motor. A linear motor may be used.

  The Y-axis slide 50 is provided with the head holding device 38, a head lifting device, and a head rotating device. The head holding device 38 holds the component mounting head 36, and is moved to an arbitrary position on the horizontal plane together with the head lifting device and the head rotating device by the movement of the X-axis slide 46 and the Y-axis slide 50. Electronic circuit components are received from the component supply devices 12 and 14 and mounted on the printed circuit board 32. The head moving device 40 is a relative moving device that relatively moves the component mounting head 36 and the printed circuit board 32. The component mounting head 36, the head holding device 38, and the like are configured in the same manner as the component mounting head, the head holding device, and the like described in Japanese Patent Application Laid-Open No. 2006-261325, and a description thereof is omitted. In addition, a part imaging system 54 is provided on each part of the X-axis slide 46 between the component supply devices 12 and 14 and the substrate transport conveyor 10, and a mark imaging system 56 is provided on the Y-axis slide 50. .

The substrate transfer conveyor 10 will be described.
The apparatus main body 60 of the substrate transport conveyor 10 includes a pair of conveyor rails 62 as shown in FIG. Each of these conveyor rails 62 is provided in parallel with the X-axis direction on the bed 30 and extends along the conveyance path. One conveyor rail 62 is a fixed conveyor rail 62 provided at a fixed position, and the other conveyor rail 62 is movable in the Y-axis direction so that it can approach and separate from one conveyor rail 62. The movable conveyor rail 62 is provided. The movable conveyor rail 62 is moved to an arbitrary position in the Y-axis direction by a rail moving device (not shown), and the distance from the fixed conveyor rail 62 is adjusted according to the width of the printed circuit board 32. The width of the printed circuit board 32 is a plane parallel to the component mounting surface of the printed circuit board 32 conveyed by the substrate conveying conveyor 10 and is a dimension in a direction perpendicular to the conveying direction in the horizontal plane.

  Each of the pair of conveyor rails 62 has a plate shape as shown in FIGS. 2 and 4, and a belt guide portion 66 disposed parallel to the X-axis direction with the plate surface in a vertical posture, and a belt guide portion. A substrate receiving portion 68 that extends horizontally inward from the upper end of 66, that is, horizontally toward the opposite conveyor rail 62 and continuously extends along the conveyance path. A portion of the conveyor rail 62 where the substrate receiving portion 68 is provided constitutes a receiving member. A belt guide device 70 is held inside the belt guide portion 66 of each of the pair of conveyor rails 62 and guides the circulating belt 72. These belt guide devices 70 are configured similarly, and the belt guide device 70 of one conveyor rail 62 will be described as a representative.

  As shown in FIG. 2, the belt guide device 70 includes three or more upper guide pulleys 76 and two or more lower guide pulleys 78. Each of these upper guide pulleys 76 is a V pulley in this embodiment, and is arranged at equal intervals in a direction parallel to the transport direction in a portion below the substrate receiving portion 68 of the belt guide portion 66, with respect to the transport direction. It is supported so that it can rotate around a horizontal axis at a right angle.

  Further, as shown in FIG. 2, two or more lower guide pulleys 78 are located below the upper guide pulley 76 of the belt guide portion 66 and are adjacent to each other in the direction parallel to the conveying direction. One each is arranged between the pulleys 76 and is supported so as to be rotatable around a horizontal axis perpendicular to the conveying direction. One upper guide pulley 76 and one lower guide pulley 78 are alternately arranged in a direction parallel to the conveying direction. Three or more upper guide pulleys 76 are adjacent to each other. However, the diameter of the lower guide pulley 78 is slightly larger than that of the lower guide pulley 78. In this embodiment, the lower guide pulley 78 is a flat pulley. The circulating belt 72 is an endless annular belt. In this embodiment, as shown in FIG. 4, the cross-sectional shape is generally T-shaped, and as shown in FIG. After being wound around the upper guide pulley 78, it is wound around the adjacent lower guide pulley 78 from below, and thereafter is wound around another upper guide pulley 76 adjacent to the lower guide pulley 78 from above. Due to repeated winding of the upper guide pulley 76 and the lower guide pulley 78 of the circumferential belt 72, a portion of the circumferential belt 72, between the upper guide pulleys 76 at both ends that are the farthest in the direction parallel to the conveying direction, This part is meandering.

  Although illustration is omitted, portions other than the portion between the upper guide pulleys 76 at both ends of the circulating belt 72 are wound around a plurality of other guide pulleys, tension pulleys, and drive pulleys below the lower guide pulley 78. The drive pulley is rotated by being rotated by a rotary drive device (not shown) using an electric motor as a drive source. The pair of circling belts 72 share a rotational drive device and are circulated in the same direction at the same time. These drive pulley and rotary drive device constitute a belt circulating device.

  As shown in FIG. 4, the printed circuit board 32 has both side edges 80 in the width direction placed on the portions of the pair of circumferential belts 72 wound around three or more upper guide pulleys 78, respectively. Supported by. Both side edge portions 80 of the printed circuit board 32 are respectively placed near inner portions that are portions of the pair of circumferential belts 72 facing each other, and are moved by the circumferential belt 72 being circulated. The conveyance path includes three or more portions that are wound around three or more upper guide pulleys 76 of the pair of circumferential belts 72 and are positioned on the upper end of the upper guide pulley 76 and contact the printed circuit board 32. The two or more lower guide pulleys 78 have a width and are long in the transport direction, and are respectively positioned below the transport path. In this embodiment, as shown in FIG. Are provided with two or more lower passage areas 82 which are areas that pass under the conveyance path. The substrate receiving portion 68 is provided continuously along the transport path, is located above all the lower passage regions 82, and the portion wound around the upper guide pulley 78 of the circulating belt 82 is shown in FIG. And as shown in FIG. 4, it is made to oppose at a distance larger than the thickness of a printed circuit board.

As shown in FIGS. 2 and 3, the belt guide portion 66 of the conveyor rail 62 has a position corresponding to each of the two or more lower passage regions 82 as a substrate guide member above the lower guide pulley 78. The guide block 86 is provided. Each of these guide blocks 86 is provided between two adjacent guide pulleys 76 of three or more upper guide pulleys 76 at a place where the circulating belt 72 does not exist in a direction parallel to the conveying direction. As shown in FIG. 2 and FIG. 4, the belt guide portion 66 is provided in a state extending from a portion immediately below the substrate receiving portion 68 to the upper end of the upper guide pulley 76 and to the lower side of the transport path. As shown in FIGS. 3 and 4, the guide block 86 is projected to a position corresponding to the vicinity of the center in the width direction of the circulating belt 72 in the direction parallel to the rotation axis of the guide pulleys 76, 78. Constitutes a vertical guide surface 88, and the side surface 90 of the side edge 80 of the printed circuit board 32 is guided in an unsupported portion where the circulating belt 72 does not exist and the side edge 80 is not supported by the circulating belt 72. . Further, as shown in FIGS. 2 and 3, both end portions of the guide surface 88 in the direction parallel to the transport direction are inclined with respect to the transport path, and approach the belt guide portion 66 as the distance from each other increases. The inclined surface 92 is inclined in a direction away from 88. In FIG. 3, the conveyor rail 62 is illustrated with the substrate receiving portion 68 removed.

  In each of the two or more lower passage regions 82, as shown in FIGS. 2 and 5, a pressing member 100 as an edge support member is disposed so as to be movable up and down between an ascending position and a descending position. The pressing member lifting device 102 as the supporting member lifting device is moved up and down between the raised position and the lowered position. The pressing member 100 has a rod shape and is held by a slider 104 as a movable member of the pressing member lifting / lowering device 102 so as to be movable up and down. As shown in FIG. 5, the slider 104 has a U-shaped side surface and is attached to a holding portion 106 constituted by one arm portion of the U shape, the other arm portion 107, and the arm portion 107. A driven portion 109 configured by the adjusted bolt 108 and a connecting portion 110 that connects the holding portion 106 and the driven portion 109 are provided.

  As shown in FIG. 5, the holding member 112 is fixed to the outer surface of the belt guide portion 66, and a fitting hole 113 penetrating in the vertical direction is formed between the belt guide portion 66 and the slider 104. The connecting portion 110 is fitted in the fitting hole 113 so as to be movable up and down, and is disposed outside the conveyor rail 62. Each of the holding unit 106 and the driven unit 109 (specifically, the arm unit 107) passes through the openings 114 and 116 provided through the belt guide unit 66 in the thickness direction, and enters the inside of the conveyor rail 62. ing. The holding unit 106 further passes through an opening 117 penetrating the guide block 86 in the thickness direction and is located above the lower guide pulley 78 and below the upper end of the upper guide pulley 76 from the guide block 86. The driven portion 109 is inserted into a position below the lower guide pulley 78. The slider 104 is biased downward by a tension coil spring 118 as an elastic member which is a kind of biasing device disposed between the connecting portion 110 and the conveyor rail 62. The lowering limit of the slider 104 due to the bias of the spring 118 is defined by the arm portion 107 coming into contact with the lower end surface of the opening 116. As shown in FIGS. 2 and 5, the opening 117 is provided in a portion of the guide block 86 below the conveyance path, and is provided below the portion of the guide surface 88 that guides the side surface 90 of the printed circuit board 32. ing. Therefore, the guide surface 88 is not divided by the opening 117, and the side surface 90 is guided by a continuous surface in the transport direction.

  As shown in FIGS. 2, 3 and 5, the pressing member 100 is an end portion that protrudes from the guide block 86 of the holding portion 106 to the inside of the conveyor rail 62, and is a circulating belt in a direction perpendicular to the conveying direction. Compressed as an elastic member, which is a kind of urging device disposed between the holding portion 106 and is fitted to a portion facing the substrate receiving portion 68 so as to be movable up and down. The coil spring 122 is biased upward and away from the holding unit 106 and the driven unit 109. The movement limit of the pressing member 100 due to the urging of the spring 122 is defined by the head portion 124 of the pressing member 100 coming into contact with the holding portion 106. The pressing member 100 is positioned at a lowered position in a state where the slider 104 is positioned at a position where the lowering limit due to the bias of the spring 118 is defined, and is positioned slightly below the printed circuit board 32 supported by the circulating belt 72. In this state, the head 124 of the pressing member 100 is in contact with the holding portion 106, and the pressing member 100 is in the state of most protruding from the holding portion 106.

  Further, as shown in FIG. 5, the adjustment bolt 108 is screwed in the up and down direction at the end of the arm 107 that protrudes to the inside of the conveyor rail 62. In addition, an engaging portion 130 is provided that is constituted by a head having a diameter larger than that of the screw portion. By adjusting the vertical position of the adjustment bolt 108 with respect to the arm portion 107, the vertical position of the driven portion 109 is changed, and the driven portion 109 (specifically, the engaging portion 130) and the pressing member 100 are changed. The relative position is adjusted. In this embodiment, the adjusting bolt 108 constitutes an adjusting device.

  As shown in FIGS. 4 and 5, there is an intermediate position between the pair of circulating belts 72 at a position corresponding to the intermediate portion in the transport direction of the printed circuit board 32 that has been carried into the component mounting area and stopped. A part support device 140 and an intermediate part support device lifting device 142 are provided. The intermediate portion support device 140 is a substrate support device, and includes a plurality of substrate support pins 144 as support members and a pin support plate 146 as a support member support plate, and is a portion between both side edges 80 of the printed circuit board 32. The intermediate part 147 is supported from below. For example, the substrate support pins 144 hold a permanent magnet on the bottom surface thereof, and the pin support plate 146 has at least the top surface thereof, and the pin support surface 148 that supports the substrate support pins 144 is made of a magnetic material. Then, the substrate support pins 144 are detachably fixed to an arbitrary position of the pin support surface 148 by magnetic force, and the substrate support pins 144 support the printed circuit board 32 from below on the substrate support surface 150 which is the tip surface thereof.

  As shown in FIG. 4, the intermediate support device lifting device 142 includes a lifting platform 154 and a lifting platform driving device 156. The lifting platform driving device 156 includes, for example, a servo motor 158 with an encoder as a driving source, and a ball screw mechanism 160 as a motion conversion mechanism that converts the rotation of the servo motor into the lifting / lowering of the lifting platform 154, and a guide device (illustrated). The elevator 154 is moved to an arbitrary position in the vertical direction while being guided by (omitted). The ball screw mechanism 160 includes, for example, a ball screw (not shown) as a feed screw fixed in the vertical direction on the lifting platform 154 and a nut (not shown) that is screwed into the ball screw and rotated by the servo motor 158. Including.

  The pin support plate 146 is detachably fixed to the lifting platform 154, and the intermediate support device 140 is lifted and lowered between the raised position and the lowered position by the lifting and lowering of the lifting platform 154. The ascending position is a position where the substrate support surface 150 of the substrate support pin 144 is positioned below the lower surface of the substrate receiving portion 68 by a distance equal to the thickness of the printed circuit board 32. The motor 158 is moved to the raised position by controlling the drive amount. As shown in FIG. 5, the lowered position is such that the substrate support surface 150 of the substrate support pin 144 is positioned below the pressing member 100 located at the lowered position, and the pin support plate 146 is from the engaging portion 130 of the adjustment bolt 108. It is a position located below, and is a position where the distance between the pin support plate 146 and the engaging portion 130 is slightly shorter than the distance between the substrate support surface 150 and the pressing surface 162 that is the upper surface of the pressing member 100. . For example, the intermediate portion support device 140 is positioned at the lowered position by a stopper (not shown), but by adjusting the position of the engagement portion 130, a predetermined distance is provided between the pin support plate 146 and the engagement portion 130. can get. Further, as shown in FIG. 5, the pin support plate 146 is fixed to and supported by the lifting platform 154, and in the direction perpendicular to the transport direction, two or more provided respectively for the pair of conveyor rails 62. The adjusting bolt 108 has a width facing each engaging portion 130. The board support pins 144 are supported by the board support pins 144 of the intermediate portion 147 of the printed circuit board 32 among the portions between the guide pulleys 76 and 78 attached to the pair of conveyor rails 62 of the pin support plate 146. It is attached at a position corresponding to the supported location.

In the electronic circuit component mounting system configured as described above, when an electronic circuit component is mounted on the printed circuit board 32, the printed circuit board 32 is transported by the substrate transport conveyor 10 and is transported into the component mounting area. The printed circuit board 32 has both side edge portions 80 placed on the portions wound around the upper guide pulleys 76 of the pair of circulation belts 72, and the circulation belts at three or more places separated in a direction parallel to the conveying direction. 72, and the belt 60 is linearly conveyed by the circulation belt 72 being rotated. At this time, as shown in FIGS. 2, 3, and 5, the printed circuit board 32 is guided along the side surfaces 90 of the side edge portions 80 by the guide surfaces 88 of the plurality of guide blocks 86. Each of the side edges 80 is a part of the circumferential belt 72 in the width direction, and is supported by a portion closer to the inner side. The supported portion supported by the circumferential belt 72 can be narrow, and is perpendicular to the conveyance direction. In this direction, the guide belt 88 is guided at a position corresponding to the vicinity of the center in the width direction of the belt 72 and is transported while maintaining a posture parallel to the transport direction. The guide block 86 is provided in the lower passage region 82 where the circulating belt 72 does not exist in the transport direction, and does not cause a problem of biting into the gap between the substrate guide member of the side edge 80 and the circulating belt. 32 is stably conveyed.

  As shown in FIGS. 2 and 3, two or more guide blocks 86 respectively provided in the belt guide portions 66 of the pair of conveyor rails 62 are provided in the lower passage region 82 and are parallel to the conveying direction. The side surface 90 of the printed circuit board 32 is partially guided by the guide surface 88. The downstream end in the conveyance direction of the printed circuit board 32 is located outside the guide surface 88 (on the belt guide portion 66 side) when reaching the portion where the guide block 86 is provided from the portion where the guide block 86 is not provided. Even if it is off, it is guided to the guide surface 88 by the inclination of the inclined surface 92 and is guided by the guide surface 88. The inclined surface 92 is a guide surface that guides the printed circuit board 32 to the guide surface 88. Further, the guide block 86 provided in the lower passage region 82 guides the side surface 90 at a place where the circulating belt 72 does not exist, and the side surface 90 of the side edge portion 80 supported at the inner side portion of the circulating belt 72. It is possible to guide from the component mounting surface side to the supported surface side supported by the circulating belt 72 without interfering with the circulating belt 72.

  When the printed circuit board 32 is transported, the intermediate support device 140 is located at the lowered position, the pin support plate 146 is separated from the engaging portion 130, the pressing member 100 is located at the lowered position, as shown in FIG. It is positioned slightly below the printed circuit board 32 that is supported and conveyed by the belt 72. If the printed circuit board 32 is conveyed to the component mounting area and stopped by a stop device (not shown), the intermediate support device 140 is raised. In the middle of this rise, as shown in FIG. 6A, one of the pair of conveyor rails 62, the pin support plate 146 comes into contact with a plurality of engaging portions 130 arranged in parallel with the conveying direction, When the pin support plate 146 is further raised from the state, the engaging portions 130 receive the driving force of the intermediate support device lifting device 142 all at once, and FIG. 6B shows one of the plurality of sliders 104. Thus, while pushing up against the urging | biasing force of the spring 118, the pressing member 100 hold | maintained at the slider 104 is raised. The upward movement of the driven portion 109 is transmitted to the pressing member 100 via the spring 122, and is lifted integrally with the slider 104 and brought into contact with the printed circuit board 32.

  In a state where the pin support plate 146 is located at the lowered position, the distance between the pin support plate 146 and the engaging portion 130 is slightly shorter than the distance between the pressing surface 162 of the pressing member 100 and the substrate supporting surface 150 of the substrate supporting pin 144. In the state where the pin support plate 146 is in contact with the engaging portion 130, the substrate support surface 150 is positioned below the pressing surface 162, and in the state where the pressing member 100 is in contact with the printed circuit board 32, The substrate support surface 150 is not yet brought into contact with the printed circuit board 32. Further, when the pin support plate 146 is further raised, the pressing member 100 keeps the printed circuit board 32 from below with the spring 122 being urged to remain at the protruding end position with respect to the holding portion 106. As shown in FIG. 6 (c), it is lifted from the belt 72 and brought into contact with the substrate receiving portion 68. When the pin support plate 146 is further lifted from this state and reaches a preset lift position, the substrate support surface 150 of the substrate support pin 144 causes the printed circuit board 32 to become planar as shown in FIG. It is possible to obtain a state where it is horizontally supported. After the pressing member 100 brings the printed circuit board 32 into contact with the board receiving portion 68, the pressing of the pressing member 100 is prevented by the substrate receiving portion 68, but after that, when the pin support plate 146 is raised, the driven member is driven. The rise of the portion 109 is absorbed by the compression of the spring 122, and the rise of the driven portion 109 and the intermediate portion support device 140 is allowed. In this embodiment, the intermediate support device lifting device 142 also serves as a pressing member driving device, and constitutes the pressing member lifting device 102 together with the slider 104 and the like. Further, the spring 122 constitutes an elastic deformation portion, and constitutes a transmission device together with the holding portion 106 and the driven portion 109. The pressing member 100 presses both side edge portions 80 of the printed circuit board 32 against the board receiving portion 68 by the urging force of the spring 122, and holds the both side edge portions 80 from above and below both sides together with the substrate receiving portion 68. The pressing member 100 is provided in a region where the circulating belt 72 is disposed in the width direction perpendicular to the transport direction, but in the direction parallel to the transport direction, the lower passing region 82 where the circulating belt 72 does not exist in the transport path. The side edge portion 80 supported by the circulating belt 72 of the printed circuit board 32 is held together with the substrate receiving section 68, and the printed circuit board 32 can be fixed. Further, the board support pins 144 support the intermediate portion 147 of the printed board 32. In the present embodiment, the plurality of pressing members 100 and the board receiving part 68 constitute a board holding apparatus or board fixing apparatus that holds and fixes both side edge portions 80 of the printed board 32 from both the upper and lower sides.

  In this way, both side edge portions 80 are held by the pressing member 100 and the substrate receiving portion 68, and the electronic circuit component is mounted by the mounting device 16 on the printed circuit board 32 in which the intermediate portion 147 is supported from below by the substrate support pins 144. Is done. After the electronic circuit components are mounted, the intermediate support device 140 is lowered and the substrate support pins 144 are separated from the intermediate portion 147. Further, the slider 104 is lowered following the lowering of the pin support plate 146 by the urging of the spring 118, and the printed circuit board 32 is positioned on both side edges 80 in a state where the intermediate support device 140 is lowered to the lowered position. Are supported by the orbiting belt 72, and the pressing member 100 is brought into contact with the holding portion 106 by the bias of the spring 122, and is positioned at the protruding end position and separated from the printed circuit board 32. It will be in the state located in a lowered position. Thereafter, the pair of circulating belts 72 is rotated, and the printed circuit board 32 is carried out of the component mounting area.

  Another embodiment of the substrate transfer conveyor will be described with reference to FIGS. The substrate transfer conveyor according to the present embodiment is provided in a substrate screen printing machine which is a kind of a substrate working system or a substrate working machine. As shown in FIGS. 7 and 8, the screen printing machine includes a frame 200 as a printing machine main body as a working machine main body, a printed board conveying apparatus 202, a board position adjusting apparatus 204 (see FIG. 9), and a screen mask supporting apparatus 206. , Squeegee device 208, imaging device 210, substrate stop position defining device 212, control device 214, and the like.

  As shown in FIG. 7, the screen mask support device 206 holds a screen mask (hereinafter abbreviated as a mask) 220 horizontally. In the screen printing machine, the squeegee device 208 is a release type, and as shown in FIG. 7, a pair of squeegee heads 222 (only one is shown in FIG. 1), The squeegee heads 222 are moved up and down, and the squeegee lifting device 226 as a contact / separation device for bringing the squeegee 224 into and out of contact with the mask 220 and the pair of squeegee heads 222 are moved in a direction parallel to the mask 220 to A squeegee moving device 228 is included for moving the placed cream solder to the squeegee 224 along the mask 220. The squeegee lifting device 226 is a relative movement device that relatively moves the mask 220 and the squeegee 224 in a direction perpendicular to the mask 220. The squeegee movement device 228 moves the mask 220 and the squeegee 224 in a direction parallel to the mask 220. And a relative movement device that relatively moves the squeegee head 222 and the printed circuit board.

  The imaging device 210 includes a reference mark camera, and is an X-axis direction that is a plane parallel to the mask 220 supported by the screen mask support device 206 by the imaging device moving device 230 and is orthogonal to each other in the horizontal plane. It is moved in the Y-axis direction, and images are taken of reference marks (not shown) provided on the mask 220 and the printed circuit board 232, respectively. The imaging device moving device 230 also moves the substrate stop position defining device 212 to stop the printed circuit board 232 conveyed by the printed circuit board conveying device 202 at a predetermined position. The imaging device 210, the board stop position defining device 212, and the imaging device moving device 230 are configured in the same manner as the imaging device described in Japanese Patent Application Laid-Open No. 2007-38456, and detailed illustration and description thereof are omitted.

  In the present embodiment, the printed circuit board conveyance device 202 includes a carry-in conveyor 240, a main conveyor 242 and a carry-out conveyor 244 as substrate conveyance conveyors as shown in FIG. Each of these conveyors 240, 242, and 244 is a belt conveyor and is arranged in a line, and the printed circuit board 232 is placed on the solder printing surface in such a posture that the solder printing surface as the work surface, which is the plate surface, is horizontal. Transport in parallel and horizontally. The X-axis direction is a direction parallel to the conveyance direction, and the Y-axis direction is a plane parallel to the solder printing surface of the printed circuit board 232 conveyed by the printed circuit board conveyance device 202, and is in the conveyance direction within a horizontal plane. It is a direction perpendicular to the width direction of the printed circuit board 232. The printed circuit board transport device 202 will be described in detail later.

  As shown in FIG. 8, the main conveyor 242 is provided below the screen mask support device 206 and the squeegee device 208 of the frame 200, and an elevating device 254 as an approach / separation device which is a kind of relative movement device (see FIG. 9). ) Is moved up and down to approach and separate from the mask 220. The main conveyor 242 is moved in the X-axis direction and the Y-axis direction by the substrate position adjusting device 204, and rotates about a vertical axis that is parallel to the X-axis direction and the Z-axis direction orthogonal to the Y-axis direction. Then, the positions of the printed circuit board 232 held by the substrate fixing device described below and the mask 220 supported by the screen mask support device 206 are adjusted. The substrate position adjusting device 206 is configured in the same manner as the substrate position adjusting device described in Japanese Patent Application Laid-Open No. 2007-38456, and detailed illustration and description thereof will be omitted.

A part of the main conveyor 242 is the same as the substrate holding apparatus described in JP-A-2006-281712, and will be described briefly.
9 to 11, the main conveyor 242 includes a belt guide device 260, a pressing member 262, a pressing member lifting device 264 as an edge supporting member lifting device, an intermediate portion supporting device 266, an intermediate portion supporting device lifting device. 268, a substrate fixing device 270 and a receiving device 272. As shown in FIG. 9, the receiving device 272 includes a pair of receiving members 274 and a receiving member moving device 276 that moves each of the receiving members 274. The receiving member moving device 276 includes a moving member 278 provided to be movable in the Y-axis direction, and a moving member moving device 279 that moves the moving member 278. The receiving member 274 is disposed on the moving member 278. And is urged downward by a tension coil spring 280 as an elastic member which is a kind of urging device. The lowering limit of the receiving member 274 due to the urging of the spring 280 is defined by the adjustment bolt 282 as an adjusting device screwed to the receiving member 274 coming into contact with the moving member 278. The receiving member 274 is provided with a receiving portion 284 that is long in the direction parallel to the transport direction and extends horizontally from the receiving member 274 toward the inside on the opposite receiving member 274 side at the upper end thereof.

  As shown in FIG. 9, the substrate fixing device 270 includes a pair of clamp members 290 and is lifted and lowered by the substrate fixing device lifting device 294 with respect to the receiving device 272. The substrate fixing device lifting device 294 includes a lifting platform 296 and a lifting platform driving device 298 as lifting members. The pair of clamp members 290 of the substrate fixing device 270 is long in the direction parallel to the transport direction, and one of them is a fixed clamp member 290 fixed to the lifting platform 296 and the other is a movable clamp member 290. Then, the distance changing device 302 is moved to an arbitrary position in the width direction of the printed circuit board 232 in the Y-axis direction. As a result, the movable clamp member 290 approaches and separates from the fixed clamp member 290, and the interval between the pair of circulating belts held by the pair of clamp members 290 is large according to the dimensions of the printed circuit board 232, as will be described later. Will be changed. The movable clamp member 290 is also moved by the clamp member moving device 304 in a fixed direction that is the same direction as the interval changing direction, and holds and releases the printed circuit board 232. The interval changing device 302 uses a clamp member moving motor 306 as a drive source, and the clamp member moving device 304 is, for example, an air cylinder that is a fluid pressure cylinder that is a kind of fluid pressure actuator, and is configured by a single acting air cylinder. Is done.

  As shown with respect to the fixed clamp member 290 in FIG. 10, the belt guide devices 260 are respectively held on the inner sides of the pair of clamp members 290 facing each other, and guide the circulating belt 310. These belt guide devices 260 are similarly configured, and the belt guide device 260 of the fixed clamp member 290 will be described as a representative.

  The fixed clamp member 290 has a portal shape and has a plate-shaped belt guide portion 312 extending in parallel with the conveying direction. As shown in FIG. 9, the belt guide portion 312 is provided in a state where the plate surface is vertical and the upper end is positioned below the receiving portion 284 of the receiving member 274, and the belt guide device 260 is provided on the vertical plate surface. Is provided. The belt guide device 260 includes three or more upper guide pulleys 314 and two or more lower guide pulleys arranged in the same manner as the three or more upper guide pulleys 76 and the two or more lower guide pulleys 78 of the belt guide device 70. A pulley 316 is provided. These upper guide pulleys 314 are provided at positions below the upper end of the fixed clamp member 290 by a distance larger than the thickness of the printed circuit board 232, and two or more lower guide pulleys 316 are adjacent to each other two upper guide pulleys. Each of the belts 310 is disposed at a portion between the upper guide pulley 314 and the lower guide pulley 314, and the belt 310 is wound around the upper guide pulley 314 from above and is wound around the lower guide pulley 316 from below. As shown in FIG. 10, the portion between the upper guide pulleys 314 located at both ends is meandering in the direction parallel to the transport direction. Similar to the circulating belt 72, the circulating belt 310 is rotated by a belt rotating device (not shown), and the printed circuit board 232 is transferred along a linear transfer path. In the present embodiment, each of the pair of clamp members 290 also functions as a conveyor rail, and constitutes an apparatus main body 317 of the substrate transport conveyor. It can be considered that the clamp member and the conveyor rail are integrally provided.

As shown in FIG. 9, the side edge 318 of the printed circuit board 232 is placed on and supported by the inner belt 310. Further, a lower passage region 320 (see FIG. 10) is provided in each portion between two adjacent upper guide pulleys 314, and guides as substrate guide members are provided in two or more lower passage regions 320, respectively. A block 322 is provided. The guide block 322 is configured in the same manner as the guide block 86, and as shown in FIGS. 9 and 10, the upper surface thereof is positioned in the same plane as the upper surface of the fixed clamp member 290, and the upper end of the upper guide pulley 314 is set downward. It is provided in a state reaching the lower side of the conveyance path. The guide block 322 is provided on both sides of the vertical guide surface 324 and the guide surface 324 that protrude to a position corresponding to the vicinity of the center in the width direction of the circumferential belt 310 in a direction parallel to the rotation axis of the guide pulleys 314 and 316. The guide surface 324 is a portion between the portions of the side edge portion 318 of the printed circuit board 232 supported by the orbiting belt 310, similar to the guide surface 88, and the orbiting belt 326. Guide the side 328 in an unsupported portion that is not supported by 310.

  Further, as shown in FIGS. 10 and 11, the pressing member 262 is disposed in the lower passage region 320 so as to be movable up and down between the raised position and the lowered position, and is moved up and down by the pressing member lifting device 264. The pressing member 262 and the pressing member lifting / lowering device 264 are the same as the pressing member 100 and the pressing member lifting / lowering except that the pressing member 262 is fixed to a holding portion of a slider which is a movable member of the edge support member lifting / lowering device. Constituent elements that are configured in the same manner as the apparatus 102 and that have the same functions are denoted by the same reference numerals to indicate the corresponding relationship, description thereof is omitted, and different portions will be described.

  The holding portion 106 of the slider 104, which is a movable member of the pressing member lifting device 264, is caused to enter the inside of the fixed clamp member 290 from the guide block 322 through the opening 117 formed in the guide block 322. Thus, the pressing member 262 extends in the vertical direction and is fixed in a state in which the pressing member 262 protrudes upward from the holding portion 106 at a portion positioned in the arrangement region of the circumferential belt 310 in a direction perpendicular to the conveyance direction. The pressing member 262 is located at the lowered position in a state where the slider 104 is urged by the spring 118 and the arm portion 107 is in contact with the lower end surface of the opening 116, and the side edge support surface 344 which is the upper surface thereof is The printed circuit board 232 supported by the belt 310 is positioned slightly below.

  As shown in FIG. 9, the intermediate support device 266 and the intermediate support device lifting device 268 are provided on the lifting platform 296 of the substrate fixing device lifting device 294. The intermediate portion support device 266 and the intermediate portion support device lifting device 268 are provided at positions corresponding to the intermediate portion in the transport direction of the printed circuit board 232 between the pair of clamp members 290. By 294, it is lifted and lowered together with the substrate fixing device 270. The intermediate portion support device 266 includes a substrate support pin 350 as a plurality of substrate support members and a pin support plate 352. These substrate support pins 350 are configured, for example, in the same manner as the substrate support pins described in JP-A-11-195899, and are erected at one end in the longitudinal direction of a plate-like pin support table. The substrate support pin 350 is detachably fixed to the pin support plate 352 by being fixed to one of a plurality of female screw holes (not shown) provided in the pin support surface 353 of the support plate 352 by opening. Then, the substrate support surface 354 that is the tip surface of the substrate support pin 350 can be positioned at an arbitrary position in an annular region surrounding the female screw hole.

  As shown in FIG. 9, the intermediate supporting device lifting device 268 includes a lifting platform 356 and a lifting platform driving device 358 as movable members, and a pin support plate 352 is detachably attached to the lifting platform 356. The lifting platform driving device 358 includes a lifting platform lifting / lowering motor 360, a ball screw 362, and a nut 364 held by the lifting platform 296 of the substrate fixing device lifting / lowering device 294, and the lifting platform 356 is vertically moved with respect to the lifting platform 296. The intermediate part supporting device 266 provided on the lifting platform 356 is moved up and down with respect to the substrate fixing device 270, and moved up and down to the raised position and the lowered position.

  The raised position of the intermediate part supporting device 266 is a position where the pressing member 262 presses the side edge 318 of the printed circuit board 232 against the receiving part 284 of the receiving member 274, and the lowered position is the position of the board supporting pin 350. The substrate support surface 354 is positioned below the pressing member 262 positioned at the lowered position, and the distance between the side edge support surface 344 of the pressing member 262 and the substrate support surface 354 is the pin support of the pin support plate 352. This position is equal to the distance between the surface 353 and the engaging portion 130 of the adjusting bolt 108. The distance between the pin support surface 353 and the engagement portion 130 is made equal to the distance between the side edge support surface 344 and the substrate support surface 354 by adjusting the screwing position of the adjusting bolt 108 with respect to the arm portion 107. Adjusted precisely.

  Each of the carry-in conveyor 240 and the carry-out conveyor 244 has a function of conveying the printed circuit board 232, but does not have a function of supporting and fixing, and has a pair of conveyor rails, a belt guide device 260, and a guide block 322. The lifting device 254, the pressing member 262, the pressing member lifting device 264, the intermediate support device 266, the intermediate support device lifting device 268, the substrate fixing device 270, and the receiving device 272 are not provided.

In this screen printing machine, the printed circuit board 232 has both side edges 318 placed on the pair of circumferential belts 310, and the circumferential belt 310 is rotated so that the side surface 328 is guided by the guide surface 324 of the guide block 322. While being carried, it is conveyed along a linear conveyance path. The guide block 322 is provided in the lower passage region 320, and the guide surface 324 is positioned on the inner side of the circulation belt 310 to guide the printed circuit board 232 in a place where the circulation belt 310 is not present. The side surface 328 of the portion 318 can be guided from the solder printing surface side to the supported surface side supported by the circumferential belt 310 without interfering with the circumferential belt 310, and between the board guide member and the circumferential belt. The printed circuit board 232 is smoothly conveyed without causing the problem of biting of the side edge portion 318. The same applies to any of the conveyors 240, 242, and 244.

  If the printed circuit board 232 is carried into the main conveyor 242 from the carry-in conveyor 240 and stopped at a predetermined position by the board stop position defining device 212, the printed circuit board 232 is fixed from the side by the board fixing device 270, and It is supported from below by the pressing member 262 and the substrate support pin 350. A receiving device 272 is used for fixing and supporting, which is described in Japanese Patent Application Laid-Open No. 2006-281712 and will be briefly described.

  As shown in FIG. 9, the pair of receiving members 274 of the receiving device 272 are positions retracted from the clamp member 290 outward in the width direction of the printed circuit board 232 between the receiving portions 284, as shown in FIG. The pair of clamp members 290 are positioned at a retracted position that is a position at which they are fitted with no gap, and after loading and stopping the printed circuit board 232, FIG. As shown in the member 274, the receiving member moving device 276 is moved to the working position, and the extending end of the receiving portion 284 is protruded inward from the guide block 322 beyond the clamp member 290 and the guide block 322, It is opposed to the pressing member 262.

  In this state, the clamp member 290 is raised with respect to the receiving member 274 by the substrate fixing device lifting device 294, and the clamp member 290 and the guide block 322 are brought into contact with the receiving portion 284 as shown in FIG. It is done. The intermediate support device 266 is provided on the lifting platform 296 and is lifted together with the substrate fixing device 270, and after the clamp member 290 and the guide block 322 are brought into contact with the receiving portion 284, the intermediate support device lift device 268. Thus, the clamp member 290 and the guide block 322 are raised, and the pin support plate 352 is brought into contact with the engaging portion 130 of the adjustment bolt 108 as shown in FIG. In this state, the substrate support surface 354 of the substrate support pin 350 and the side edge support surface 344 of the pressing member 262 are located in the same plane, and the intermediate support device 266 is further raised from this state.

  As the pin support plate 352 is raised, the substrate support pin 350 is raised, the slider 104 is pushed up, the pressing member 262 is raised, and the substrate support pin 350 is moved to the printed circuit board 232 as shown in FIG. The intermediate portion 370 that is a portion between both side edge portions 318 is supported, the pressing member 262 supports the side edge portion 318 and is lifted from the circumferential belt 310, and the intermediate portion support device 266 is raised to the raised position. Then, the pressing member 262 is in a state of pressing the side edge portion 318 against the receiving portion 284. The pressing member 262 provided in the lower passage region 320 can support the side edge portion 318 of the printed circuit board 232 supported by the circulating belt 310 from below without interfering with the circulating belt 310. The intermediate portion support device 262 is further raised from the state in which the pressing member 262 is just in contact with the side edge portion 318 and the receiving portion 284, but this rise is caused by the receiving member 274 resisting the biasing force of the spring 280. The printed board 232 is pressed against the receiving portion 284 to correct the warp. Also, the solder printing surface, which is the work surface of the printed circuit board 232, and the upper surface of the clamp member 290 and the upper surface of the guide block 322 are in the same plane.

  After the side edge portion 318 of the printed circuit board 232 is pressed against the receiving portion 284 in this way, the movable clamp member 290 is moved in the direction approaching the fixed clamp member 290 by the clamp member moving device 304, and a pair of clamp members 290 is moved. Each guide surface 324 of each of the plurality of guide blocks 322 provided in each position fixes the printed circuit board 232 from both sides in the width direction. When the printed circuit board 232 is transported, there is a gap allowing the transport of the printed circuit board 232 between the side surface 328 and the guide surface 324 of the printed circuit board 232, but the transport is stopped and cream solder is printed on the printed circuit board 32. In this case, the printed circuit board 232 is sandwiched and fixed between the pair of clamp members 290. The guide block 322 is also a substrate clamp portion or a substrate fixing portion, and the guide surface 324 is also a substrate clamp surface or a substrate fixing surface.

  After the substrate is fixed, as shown in FIG. 13A, the substrate fixing device 270 is lowered, and the printed circuit board 232 is fixed by the substrate fixing device 270 and remains supported by the pressing member 262 and the substrate support pins 350. In the state, it is once lowered and separated from the receiving portion 284. After the separation, as shown in FIG. 13B, the receiving member 274 is retracted to the retracted position, and after the retracting, the substrate fixing device 270 is lifted by the substrate fixing device lifting device 294 as shown in FIG. 13C. Then, the printed circuit board 232, the clamp member 290, and the guide block 322 are fitted between the pair of receiving portions 284, and each upper surface is positioned in the same plane with no gap from the upper surface of the receiving portion 284. Since the printed board 232 is fixed by the board fixing device 70 with its posture corrected, the receiving portion 284 is retracted, and even if it is not received by the receiving portion 284, the printed board 232 is kept straight. Both side edge portions 318 are supported from below by a plurality of pressing members 262, and the intermediate portion is supported from below by a plurality of substrate support pins 350. Thus, after the receiving member 274 is retracted to the retracted position, the pressing member 262 functions as a support member that simply supports the side edge portion 318 from below.

  Then, after imaging of the reference marks provided on the mask 220 and the printed circuit board 232 by the imaging device 210 and correction of the positional deviation between the mask 220 and the printed circuit board 232 by the substrate position adjusting device 204, the entire main conveyor 242 is moved up and down. As shown in FIG. 13D, the receiving portion 284, the clamp member 290, the guide block 322, and the printed board 232 are brought into contact with the mask 220. After the contact, the squeegee 224 is moved by the squeegee moving device 228, and the cream solder is pushed into the through hole of the mask 220 and printed on the printed circuit board 232.

  The squeegee 224 is brought into contact with the portion of the mask 220 with which the receiving portion 284 is brought into contact, and is then moved along the mask 220, and also moved on the side edge 318 of the printed circuit board 232 while moving the cream solder. However, the side edge portion 318 is supported from below by a pressing member 262 fixed to the slider 104, and can receive a contact force of the squeegee 224 with respect to the mask 220. Therefore, the cream-like solder can be printed also on the side edge portion 318, and the contact force of the squeegee 224 to the mask 220 at the start of printing the cream-like solder on the printed circuit board 232 starting from the side edge portion 318 is detected. Therefore, the contact force can be controlled based on the detection result, and cream-like solder can be printed on the entire printed circuit board 232 with high quality.

  After the printing is completed, the board fixing device 270 is lowered by a short distance, and the printed board 232 is separated from the mask 220. Next, the substrate fixing device 270 is lowered, and the entire main conveyor 242 is lowered by the lifting device 254. In the middle of this lowering, the movable clamp member 290 is moved away from the fixed clamp member 290 by the clamp member moving device 304, the fixation of the printed circuit board 232 by the pair of clamp members 290 is released, and the entire main conveyor 242 is moved. After being lowered to the lowered end position, the intermediate support device 262 is lowered, and the printed circuit board 232 is supported by the circulating belt 310 and carried out.

  Both side edges of the printed circuit board may be adsorbed and held by the edge support member with negative pressure. The substrate conveyance conveyor which is the Example is demonstrated based on FIGS. The substrate transfer conveyor of this embodiment is provided in a screen printer. This screen printing machine is configured in the same way as the screen printing machine shown in FIGS. 7 to 13 except that both side edges of the printed circuit board are adsorbed by the edge support member by negative pressure. The same reference numerals are given to the constituent elements constituting the same to indicate the corresponding relationship, and the description is omitted.

  In the substrate transfer conveyor of this embodiment, the edge support member 500 has a rectangular cross-sectional shape as shown in FIG. 15, and the clamp of the holding portion 106 of the slider 104 as shown in FIGS. It is fixed to the projecting end of the member 290 in the direction of projecting upward, and is raised and lowered together with the slider 104. The upper surface of the edge support member 500 constitutes an upward edge support surface 502 at a right angle to the elevation direction. In the edge support member 500, at least one, in this embodiment, two negative pressure supply passages 504 are provided. These negative pressure supply passages 504 extend in the vertical direction and are arranged in a row in a direction parallel to the transport direction. Each end is opened to the edge support surface 502. The other ends of the two negative pressure supply passages 504 are connected to a negative pressure pump 508 serving as a negative pressure source via a common passage 506 and the like, and negative pressure is supplied. Negative pressure is supplied from the negative pressure pump 508 to the negative pressure supply passages 504 of the plurality of edge support members 500 all at once. The supply is provided in the middle of a passage connected to the negative pressure pump 508, for example. The control valve device is controlled by switching an electromagnetic valve device, for example, an electromagnetic directional switching valve. Negative pressure is supplied when the printed circuit board 232 is held, and supply of the negative pressure is cut off when holding is unnecessary. Opened to the atmosphere, the printed circuit board 232 is released. These negative pressure supply passages 504 constitute a negative pressure supply part, and the edge support surface 502 constitutes an edge suction surface as an edge suction part.

  Each of the plurality of edge support members 500 provided on each of the pair of clamp members 290 is raised along with the rise of the intermediate support device 266 in the same manner as the pressing member 262, and the side edges of the printed circuit board 232. 318 is pressed against the receiving portion 284 of the receiving member 274. As a result, in a state where the warpage of the printed circuit board 232 is corrected, negative pressure is supplied to the two negative pressure supply passages 504 of each of the plurality of edge support members 500, and the negative pressure is guided to the edge support surface 502. Thus, negative pressure is supplied to the opening to the edge support surface 502 of the negative pressure supply passage 504, and the side edge portion 318 is adsorbed to the edge support surface 502 and held in close contact with it. In this state, the movable clamp member 290 is moved to the fixed clamp member 290 side, the printed circuit board 232 is sandwiched from both sides in the width direction, and the printed circuit board 232 is fixed by the circuit board fixing device 270 with the warpage corrected. .

  After the printed board 232 is thus fixed by the board fixing device 270, the receiving member 274 is retracted to the retracted position. The printed board 232 has a plurality of edge support members 500 each having both side edges 318. Therefore, the corrected warpage does not return to the original state, and the flat state is surely maintained. The edge support member 500 is also an edge holding member, and is also a pressing member when the side edge 318 is pressed against the receiving portion 284. The printed circuit board 232 is kept in a state of being absorbed by the edge support member 500 until the printing of the cream-like solder is completed. After the printing is completed, the printed circuit board 232 is separated from the mask 220 and then the negative pressure supply passage 504. The supply of the negative pressure to the substrate is interrupted and released to the atmosphere, and the holding of the printed circuit board 232 by the edge support member 500 is released.

In the screen printing machine, the printed circuit board may be in a state where both side edges thereof are pressed against the receiving member by the pressing member even during printing. The screen printing machine which is the Example is demonstrated.
The screen printing machine of the present embodiment is similar to the screen printing machine shown in FIGS. 7 to 13, the frame as the printing machine main body as the main body of the working machine, the printed board conveying device, the substrate position adjusting device, the screen mask supporting device, the squeegee Apparatus, imaging device, substrate stop position defining device, control device, and the like. These frames and the like are configured in the same manner as the frame 200 and the like except for the main conveyor of the printed circuit board conveyance device. Similar to the printed board transport apparatus 202, the printed board transport apparatus includes a carry-in conveyor, a main conveyor, and a carry-out conveyor. The main conveyor will be described with reference to the drawings.

  As shown in FIG. 17, the main conveyor 400 of the screen printing machine is provided on a substrate position adjusting device 402 and is lifted and lowered by a lifting device 404. As shown in FIGS. 17 to 19, the main conveyor 400 includes a pair of conveyor rails 408 constituting the apparatus main body 406, and belt guide devices 412 and a plurality of guides supported by belt guide portions 410 of the conveyor rails 408. A block 414, a pressing member 416, a pressing member lifting device 418, an intermediate support device 420, an intermediate support device lifting device 422, and a receiving member 424 are included. These conveyor rails 408 and the like are configured in the same manner as the belt guide device 260 and the like shown in FIGS. 7 to 13 except for the receiving member 424 provided on the conveyor rail 408. Is attached to indicate the correspondence, and the description is omitted. The intermediate support device lifting device 422 is the same as the intermediate support device lifting device 268 in that it includes a motor and a feed screw mechanism. However, as shown in FIG. 17, as shown in FIG. And a nut 434 constituting the feed screw mechanism 432 is rotated by a lifting / lowering table lifting / lowering motor 436 as a driving source, whereby the fixed ball screw 438 is lifted / lowered by the lifting / lowering table 428 and the lifting / lowering table 428 is lifted / lowered. Thus, the intermediate support device 420 is moved to an arbitrary position in the vertical direction.

  As shown in FIG. 17, the receiving member 424 is provided at each upper end of the pair of conveyor rails 408. In this embodiment, the receiving member 424 is formed of a leaf spring having a thickness of 0.1 mm, and its base end is fixed to the conveyor rail 408 and extends parallel to the conveying direction. As shown in FIG. Is protruded inward from the conveyor rail 408 and is opposed to the pressing member 416. The conveyor rail 408 constitutes a leaf spring holding member.

  A pressing member 450 and a touch sensor 452 as a detection device shown in FIG. 17 are used for supporting the printed circuit board by the intermediate support device 420 and the like. The pressing member 450 and the touch sensor 452 are not disclosed yet, but are configured in the same manner as the pressing member and the touch sensor described in the specification of Japanese Patent Application No. 2006-320838 filed by the present applicant. explain. Since the pressing member 450 presses the printed board from the upper side of the printed board, the pressing member 450 is referred to as an upper pressing member 450 with respect to the pressing member 416 that presses the printed board from the lower side.

  The upper pressing member 450 is provided on the moving member of the imaging device moving device 453 so as to be movable up and down. Moved to the position. As shown in FIG. 20, the upper pressing member 450 includes a plurality of pressing portions or contact portions 455, and is moved up and down by an air cylinder 454 as a fluid pressure cylinder which is a kind of fluid pressure actuator. The contact portion 455 is made of rubber, for example, antistatic urethane rubber. The air cylinder 454 constitutes a pressing member lifting device. Supply of positive pressure from the positive pressure source 456 to the two air chambers of the air cylinder 454 is performed by switching an electromagnetic direction switching valve 458 as an electromagnetic control valve, and the upper pressing member 450 is as shown by a solid line in FIG. The retracted position located above the receiving member 424 and the pressing surface, the pressing surface or the contact surface 460 which is the lower end surface or the front end surface of the contact portion 455, as shown by a two-dot chain line in FIG. It is located downward and below the receiving surface 462 facing the pressing member 416, and is moved to a pressing position where the printed circuit board 464 is pressed and pressed against the board support pins 350. The air cylinder 452 functions as an elastic member which is a kind of urging means, and urges the upper pressing member 450 downward in a state where the upper air chamber communicates with the positive pressure source 456. The magnitude of the urging force can be adjusted to an appropriate magnitude by controlling the air pressure. For example, the air pressure is controlled by a pressure control device (not shown) provided in the positive pressure source 456.

  The touch sensor 452 is provided on the moving member of the imaging device moving device 453 together with the upper pressing member 450, and is moved to an arbitrary position in the horizontal plane. As shown in FIG. 20, the touch sensor 452 includes a sensor main body 470 and a contact 472, is provided concentrically with the upper pressing member 450, and is moved up and down by an air cylinder 474 that is a lifting device. The positive pressure is supplied to the two air chambers of the air cylinder 474 by switching the electromagnetic direction switching valve 476. As shown by a solid line in FIG. 20, the touch sensor 452 has the lower end of the contact 472 at the receiving member. The retracted position located above the receiving surface 462 of 424 and the detection position where the lower end of the contact 472 is located at the same height as the receiving surface 462 of the receiving member 424 as shown by the two-dot chain line. It is done.

  As shown in FIG. 17, the printed circuit board 464 has both side edge portions 480 placed on the portions that are wound around the upper guide pulley 314 of the pair of circumferential belts 310, and the circumferential belt 310 is rotated. Thus, the side surface 482 is conveyed while being guided by the guide surface 324 of the guide block 414. When the printed circuit board 464 is conveyed, as shown in FIG. 17, the two or more pressing members 416 and the intermediate portion supporting device 420 respectively held by the pair of conveyor rails 408 are positioned at the lowered positions, and the upper pressing member 450. The touch sensor 452 is positioned at the retracted position. When the pressing member 416 is in the lowered position, the side edge supporting surface or pressing surface 484 which is the upper surface thereof is positioned slightly below the printed circuit board 464 supported by the circulating belt 310. In this embodiment, the lowered position of the intermediate support device 420 is determined by the distance between the pin support surface 353 of the pin support plate 352 and the engaging portion 130 of the adjusting bolt 108 provided on the slider 104. The position is equal to the distance between the support surface 354 and the pressing surface 484 of the pressing member 416. The distance between the pin support surface 353 and the engaging portion 130 is accurately adjusted to be equal to the distance between the substrate support surface 354 and the pressing surface 484 by adjusting the screwing position of the adjusting bolt 108 with respect to the arm portion 107. .

  After stopping the printed circuit board 464, the upper pressing member 450 and the touch sensor 452 are moved above the intermediate part of the printed circuit board 464 and above the intermediate part supporting device 420, as shown in FIG. The upper pressing member 450 is lowered to the pressing position, and the touch sensor 452 is lowered to the detection position. In this state, the intermediate support device 420 is raised and the substrate support pins 350 are raised. In the middle of this ascent, as shown in FIG. 21 (b), the pin support plate 352 comes into contact with the engaging portions 130 of the plurality of adjustment bolts 108 respectively held by the pair of conveyor rails 408, and the plurality of sliders The plurality of pressing members 416 are lifted together with the substrate support pins 350 by simultaneously pushing up 104. In this state, the pressing surface 484 of the pressing member 416 and the substrate support surface 354 have the same height and are located in the same plane.

  When the printed circuit board 464 has a convex warp upward, first, as shown in FIG. 22 (a), first, a plurality of pressing members 416 come into contact with both side edges 480 of the printed circuit board 464, and the printed circuit board 464 is circulated. Lift from belt 310. As a result, the contact portion 455 of the upper pressing member 450 comes into contact with the intermediate portion of the printed circuit board 464 to prevent the printed circuit board 464 from rising and press the printed circuit board 464 toward the pressing member 416 and the substrate support pin 350. Then, the intermediate part support device 420 is raised, and the printed circuit board 464 is pressed by the pressing member 416 to correct the warp. When the plurality of substrate support pins 350 come into contact with the printed circuit board 464, the printed circuit board 464 is sandwiched from above and below by the pressing member 416, the substrate support pin 350, and the upper pressing member 450, and the warp is removed. As shown in b), it is corrected to a straight posture. The upper pressing member 450 is positioned in the pressing position until the warp of the printed circuit board 464 is corrected by the urging of the air cylinder 454 and the printed circuit board 464 is supported by the substrate support surface 354 of the substrate support pin 350. After the correction, the upper pressing member 450 is allowed to rise as the intermediate portion support device 420 rises.

  Thereafter, the intermediate portion support device 420 is raised while retreating the upper pressing member 450 against the urging force of the air cylinder 454. Then, as shown in FIG. 23, when the side edge portions 480 come into contact with the receiving member 424, the contact 472 of the touch sensor 452 comes into contact with the printed board 464, and the printed board 464 comes into contact with the receiving member 424. Detect that you have reached Based on this detection, the lifting platform driving device 430 is stopped, the pair of receiving members 424 respectively press the side edge portions 480 of the printed circuit board 464, and the pressing member 416 presses the side edge portion 480 against the receiving member 424. The edge 480 is sandwiched and held by the receiving member 424 and the pressing member 416 from above and below. The printed board 464 is also supported from below by a plurality of board support pins 350 and is held between the receiving member 424 and the board support pins 350 from above and below. The pressing member 416 is provided in the lower passage region 320 and is provided at a location where the circulating belt 310 does not exist in the transport direction, and supports the side edge portion 480 supported by the rotating belt 310 of the printed circuit board 464 from below. The receiving member 424 can be pressed and held.

  The touch sensor 452 reaches the position where the printed circuit board 464 comes into contact with the receiving member 424, detects the contact at the moment when the contact 472 contacts the upper surface of the printed circuit board 464, and based on the detection, the control device detects the contact. The operation of the driving device 430 is immediately stopped, and the raising of the intermediate support device 420 is immediately stopped. Therefore, the printed board 464 is raised to a height at which the upper surface is located at a preset position without being damaged by the thin receiving member 424 and the printed board 464, and supported by the board support pins 350. Can do.

  The time from the detection of the upper surface of the printed circuit board 464 by the touch sensor 452 to the stoppage of the lifting of the intermediate support device 420 is very short. During this time, the pressing member 416 is prevented from rising by the receiving member 424, while the intermediate member The support device 420 is raised slightly. This rise is allowed by elastic deformation of the receiving member 424 made of a leaf spring, and both side edge portions 480 are elastically sandwiched from both upper and lower sides by the joint of the free end portion of the receiving member 424 and the plurality of pressing members 416. Held. Further, a slight rise of the board support pins 350 due to the rise of the intermediate part support device 420 after the printed board 464 is brought into contact with the receiving member 424 is allowed by bending of the printed board 464.

  After the printed circuit board 464 is thus held, the upper pressing member 450 and the touch sensor 452 are raised to the retracted position. Then, after the imaging device is moved to capture the reference marks provided on the printed circuit board 464 and the mask, and detect and correct their misalignment, the main conveyor 400 is raised by the elevating device 404 and the printed circuit board 464 is moved. Touch the mask. The printed circuit board 464 is printed with creamy solder by pressing the mask with a squeegee while both side edges 480 are pressed by the receiving member 424. Therefore, a gap is generated between the screen and the printed board 464 by the thickness of the receiving member 424. However, the thickness of the receiving member 424 is extremely thin, and in this embodiment, the thickness is 0.1 mm, and the squeegee is a mask. Can be pressed against the printed circuit board 464 and moved over the mask, and cream solder can be printed on the printed circuit board 464 through the through holes of the mask. The squeegee is pressed against the mask from a position on the receiving member 424, for example. Even if the printed circuit board 464 is thin, the upper side edge 480 of the printed circuit board 464 is pressed by the pair of receiving members 424, and the side edge 480 is clamped by the receiving member 424 and the pressing member 416. The state in which the warp is removed is maintained, and printing is performed satisfactorily.

  After the cream solder is printed, the main conveyor 400 is lowered by the lifting device 404, and the printed circuit board 464 is separated from the mask. After the main conveyor 400 is lowered to the lower end position of the raising / lowering by the raising / lowering device 404, the intermediate part supporting device 420 is lowered by the intermediate part supporting device raising / lowering device 422, and the printed circuit board 464 is placed on the pair of circumferential belts 310. In addition, the pressing member 416 and the board support pin 350 are separated from the printed board 464, and the pin support plate 352 is separated from the engaging portion 130 of the adjustment bolt 108. Then, the printed board conveyance device is operated, and the carry-in, main, and carry-out conveyors are operated, and the printed board 464 is carried in and out.

  The lower guide pulley may be provided below the movable member of the edge support member lifting device.

Moreover, in the board | substrate conveyance conveyor provided with the belt guide apparatus which guides a circumference belt to a meandering state, a board | substrate guide member may be provided in the outer side of a circumference belt, and the side surface of the side edge part of a printed circuit board may be guided. In this case, the substrate guide member may be provided at a location corresponding to the lower passage region in a direction parallel to the transport direction, or may be provided along the transport direction and have a continuous long guide surface. The guide surface is desirably provided in a state of continuously extending from above to below the printed circuit board.

  Further, in the electronic circuit component mounting system, similarly to the screen printing machine shown in FIGS. 7 to 13, the printed circuit board is fixed by being sandwiched from both sides in the width direction by the substrate fixing device, and at least one of the side edges at the time of component mounting. May not be received by the receiving member but may be opened. Thereby, for example, an electronic circuit component can be mounted on the side edge portion.

The effect of supplying negative pressure to the edge support member and adsorbing and holding the side edge portion of the printed circuit board by the negative pressure is that the side edge part is not received by the receiving member during the operation, and the printed circuit board is fixed to the board. However, the present invention is not limited to this, and the printed circuit board is not limited to the electronic circuit component mounting system shown in FIGS. 1 to 6 and the screen printer shown in FIGS. Even in a work machine where work is performed on the printed circuit board while the side edge is received by the receiving member, a negative pressure supply passage is provided in the edge support member, and the side edge of the printed circuit board is attracted by negative pressure. And may be held.
Further, a plurality of negative pressure supply passage rows including a plurality of negative pressure supply passages arranged along the transport direction may be provided.

  Furthermore, the movable member connecting portion including the holding portion and the driven portion respectively positioned on the upper and lower sides of the lower guide pulley and the connecting portion connecting the holding portion and the driven portion are provided inside the conveyor rail. Also good.

  Further, in the screen printing machine, the edge support member lifting device may be a device including a transmission device including a holding portion, a driven portion, and an elastic deformation portion.

  Furthermore, a pressing member is provided above at least one of both side edges of the printed circuit board so as to be movable between a pressing position that presses the printed circuit board against the belt and a release position that releases the printed circuit board, and is moved by the moving device and pressed. The printed circuit board may be held between the upper guide pulley and the upper and lower sides at the position.

Further, the receiving member may be provided so as to be movable up and down with respect to the edge supporting member, and the receiving member may be lowered by the receiving member lifting and lowering device so that the side edge of the printed circuit board is pressed against the edge supporting member and supported.
Further, the edge support member may be held by the holding portion of the movable member via an air cylinder which is a fluid pressure cylinder which is a kind of fluid pressure actuator, and the air cylinder may function as an urging device and function as an elastic deformation portion. Good. The piston rod itself of the air cylinder may be used as the pressing member.

  Further, the claimable invention is an electronic circuit component mounting system, an on-board working system other than a screen printing machine, for example, an adhesive applicator for applying an adhesive to a printed circuit board, and an inspection of an electronic circuit component mounted state on the printed circuit board. It can be applied to a substrate transfer conveyor for transferring a printed circuit board in a mounting state inspection machine or the like.

It is a top view which shows roughly the electronic circuit component mounting system provided with the board | substrate conveyance conveyor which is one Example of claimable invention. It is a front view which shows a part of belt guide apparatus of the said board | substrate conveyance conveyor, and a surrounding belt. It is a top view (partial cross section) which shows a part of said belt guide apparatus. It is a side view which shows the said board | substrate conveyance conveyor in the cross section in the part by which the printed circuit board was supported by the circulation belt. It is a side view which shows the said board | substrate conveyance conveyor in a cross section in the part in which the pressing member and the pressing member raising / lowering apparatus were provided. It is a figure explaining the support by the pressing member and board | substrate support pin of the printed circuit board conveyed by the said board | substrate conveyance conveyor. It is a front view which shows schematically the screen printer provided with the board | substrate conveyance conveyor which is another Example. It is a front view which shows schematically the printed circuit board conveying apparatus of the screen printing machine shown in FIG. It is a side view (partial cross section) which shows the screen printer shown in FIG. It is a front view which shows a part of belt guide apparatus of a main conveyor, and a surrounding belt among the printed circuit board conveyance apparatuses of the screen printer shown in FIG. It is a side view which shows the main conveyor shown in FIG. 10 in the cross section in the part in which the pressing member and the pressing member raising / lowering apparatus were provided. It is a figure explaining the support by the pressing member and board | substrate support pin of the printed circuit board conveyed by the main conveyor shown in FIG. 10, the reception by a receiving member, and fixation by a board | substrate fixing device. FIG. 11 is a diagram for explaining a state in which cream solder is printed by being brought into contact with a screen after being supported by a pressing member and a substrate support pin of the printed board conveyed by the main conveyor shown in FIG. 10 and fixed by a board fixing device. is there. It is a front view (partial cross section) which shows a part of belt guide apparatus of a main conveyor, and a surrounding belt among screen printing machines provided with the board | substrate conveyance conveyor which is another Example. It is a top view (partial cross section) which shows a part of belt guide apparatus shown in FIG. FIG. 15 is a side view showing the substrate conveyor provided with the belt guiding device shown in FIG. 14 in a cross-section at a portion where the edge support member and the edge support member lifting device are provided. It is a side view (partial cross section) which shows the screen printing machine provided with the board | substrate conveyance conveyor which is another Example. It is a front view which shows a part of belt guide apparatus of the main conveyor of a screen printing machine shown in FIG. 17, and a surrounding belt. It is a side view which shows the main conveyor shown in FIG. 17 in a cross section in the part in which the pressing member and the pressing member raising / lowering apparatus were provided. It is a side view (partial cross section) which shows the pressing member and touch sensor which were provided about the main conveyor shown in FIG. It is a figure explaining the support of the printed circuit board by the pressing member and intermediate part support apparatus in the screen printing machine shown in FIG. 17, and is a figure explaining until a pin support stand is made to contact | abut to an engaging part. It is a figure explaining the support of the printed circuit board by the pressing member and intermediate part support apparatus in the screen printing machine shown in FIG. 17, and the pressing member and the intermediate part support apparatus press the printed circuit board against the upper pressing member and correct the posture. It is a figure explaining up to. It is a figure explaining the support of the printed circuit board by the pressing member and the intermediate part supporting device in the screen printing machine shown in FIG. 17, and the side edge part of the printed circuit board supported by the pressing member and the intermediate part supporting device is received by the receiving member. It is a figure explaining until it is hold | maintained.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10: Board | substrate conveyance conveyor 32: Printed circuit board 60: Apparatus main body 62: Conveyor rail 70: Belt guide apparatus 72: Circulation belt 76: Upper guide pulley 78: Lower guide pulley 80: Side edge part 82: Lower passage area 86: Guide block 88: Guide surface 90: Side surface 100: Pressing member 102: Pressing member lifting device 104: Slider 106: Holding portion 109: Driven portion 110: Connecting portion 122: Compression coil spring 130: Engaging portion 140: Intermediate portion supporting device 142 : Intermediate part support device lifting device 144: Substrate support pin 146: Pin support table 147: Intermediate part 154: Lift table 202: Printed circuit board transport device 232: Printed circuit board 240: Loading conveyor 242: Main conveyor 244: Carrying out Conveyor 260: Belt guide device 262: Pressing member 264: Pressing member lifting device 266: Intermediate portion supporting device 268: Intermediate portion supporting device lifting device 270: Substrate fixing device 272: Receiving device 274: Receiving member 284: Receiving portion 290: Clamp Member 294: Substrate fixing device lifting device 310: Circulating belt 314: Upper guide pulley 316: Lower guide pulley 318: Side edge portion 320: Lower passage region 322: Guide block 324: Guide surface 328: Side surface 350: Substrate support pin 352: Pin support base 356: Lift base 358: Lift base drive device 400: Main conveyor 406: Main body 408: Conveyor rail 412: Belt guide device 414: Guide block 416: Pressing member 418: Pressing Material lifting device 420: Intermediate portion supporting device 422: Intermediate portion supporting device lifting device 424: Receiving member 428: Lifting base 464: Printed circuit board 480: Side edge 482: Side surface 500: Edge supporting member 502: Edge supporting surface 504 : Negative pressure supply passage

Claims (5)

A printed circuit board is a substrate transport conveyor that supports both side edges in the width direction of the printed circuit board by a pair of circulating belts and transports along a linear transport path, each of the pair of circulating belts,
Along the transport path, and the three or more upper guide pulley arranged at intervals from one another, two by two adjacent to each other in a direction parallel to the transport path of those three or more upper guide pulley be between, and a two or more of the lower guide pulley, which is arranged from below them on the guide pulley, each of the pair of circumferential belt, hanging wound from above to one or more of the upper guide pulley After being wound, it is wound around one or more of the lower guide pulleys from below, and then is wound around another one or more of the upper guide pulleys from above, so that a part of the circulating belt is placed at two or more places. A belt guide device in a meandering state at
In a region between two adjacent guide pulleys of the three or more upper guide pulleys, each of the circulating belts being guided by the two or more lower guide pulleys and passing below the conveyance path. Each one of the printed circuit boards that are respectively disposed in two or more lower passage areas and each of the side edges are supported by the circumferential belt guided by the two adjacent upper guide pulleys. Two or more substrate guide members each having a substrate guide surface for guiding the side surfaces of the side edge portions of the printed circuit board, wherein each of the substrate guide surfaces is positioned at an intermediate portion in the width direction of the circumferential belt. One continuously extending from the upper side to the lower side of each side edge of
A substrate transport conveyor comprising: a revolving belt, a belt guide device, and a conveyor rail that supports two or more substrate guide members . In each of the two or more lower passage regions, an edge support is provided that can be moved up and down to a raised position and a lowered position, and supports one of the side edges of the printed circuit board from below at the raised position. Members,
Substrate transfer conveyor of claim 1 including the edge support member elevating device for vertically moving between said lowered position and the edge support member and the raised position. A portion between the pair of circumferential belts and capable of moving up and down between a raised position and a lowered position at a position corresponding to an intermediate portion in the conveyance direction of the printed board, and a portion between the side edges of the printed board. An intermediate part supporting device for supporting the intermediate part,
The substrate transport conveyor according to claim 2 , further comprising: an intermediate support device lifting device that lifts and lowers the intermediate support device, wherein a drive source of the intermediate support device lift device also serves as a drive source of the edge support member lift device. . The edge support member elevating device, a holding portion for holding the edge support member positioned above the lower guide pulley, receive the driving force from the drive source positioned below the lower guide pulley A pair of the above-described movable members, each of which includes a movable member that includes a driven portion and a connecting portion that connects the holding portion and the driven portion and is held by the conveyor rail so as to be movable up and down; One of the conveyor rails holds the belt guide device on the inner side that is opposite to the other conveyor rail, and the connecting portion of the movable member is disposed on the outer side of the one conveyor rail, and the holding portion and The substrate transport conveyor according to claim 3 , wherein the driven portion passes through the one conveyor rail and enters the inside of the one conveyor rail. The substrate guide surface is a plane parallel and perpendicular to the transport path, and the substrate guide member has a pair of slopes adjacent to the substrate guide surface in a direction parallel to the transport path in addition to the substrate guide surface. 5. The substrate transfer conveyor according to claim 1, wherein the substrate transfer conveyor has a surface that is inclined in a direction away from the printed circuit board as the distance from the substrate guide surface increases.

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