JP2009289780A - Substrate conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a substrate conveying device which hardly gets clogged with a substrate. <P>SOLUTION: The substrate conveying device includes a belt conveyor mechanism 20 serving as a substrate moving means of moving a substrate B supplied to a substrate entrance 4 in a fixed direction (in an X-axial direction) and discharging it from a substrate exit 5, and right and left guide members 27 which guide right and left side end surfaces S of the substrate B moved by the belt conveyor mechanism 20 by guide surfaces 28 extending in the conveying direction (in the X-axial direction) of the substrate B and hold the substrate B in a fixed posture during the conveyance, and roller members 31 which rotate freely on upper and lower shafts (roller member support shafts 30) and whose outer peripheral surfaces (roller surfaces 32) come into contact with extension surfaces 28a of the guide surfaces 28 are provided at ends of the right and left guide members 27 on sides of the substrate entrance 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a board transfer device provided in a component mounting machine or the like.

  A board transfer device provided in a component mounting machine or the like includes a board moving means for moving a board supplied to the board inlet in a certain direction and discharging it from the board outlet, and left and right sides of the board moved by the board moving means. It comprises left and right guide members that guide the end face and hold the substrate being transported in a fixed posture. In many cases, the substrate moving means uses a belt conveyor mechanism that travels and drives a belt stretched between a plurality of pulleys and places and conveys the substrate.

Tapered substrate guides that widen toward the upstream side are provided at the ends of the left and right guide members provided in such a component conveying device toward the upstream side (FIG. 2 of Patent Document 1). This substrate guide part is used when the substrate supplied to the substrate entrance is displaced in the lateral direction (horizontal direction orthogonal to the substrate transport direction) with respect to the substrate movement area defined by the left and right guide members. The tip of the substrate comes into contact with the substrate guide, and is guided along the taper shape so that the entire substrate is moved inward of the substrate movement region, thereby correcting the positional deviation of the substrate. To do.
Japanese Patent No. 3133581

  However, if the tip of the substrate comes into contact with the tapered substrate guide portion, a dent may be formed at that portion. If the tip of the substrate is caught by the dent, the substrate is positioned between the left and right guide members. There is a possibility that a malfunction (clogging of the substrate) may occur due to being caught between the two. In particular, when the substrate is made of a hard material such as ceramic and has a high frictional resistance, there is a high possibility that such a problem occurs.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a substrate transfer device that is less likely to cause substrate clogging.

  The substrate transfer apparatus according to claim 1 includes a substrate moving unit that moves the substrate supplied to the substrate entrance in a certain direction and discharges the substrate from the substrate exit, and left and right side end surfaces of the substrate moved by the substrate moving unit. A substrate transport apparatus comprising left and right guide members for guiding a guide surface extending in a substrate transport direction to hold the substrate being transported in a fixed posture, wherein each of the left and right guide members has an end on the substrate entrance side. The roller member is provided with a roller member that is rotatable about the vertical axis and whose outer peripheral surface is in contact with the extended surface of the guide surface of the guide member.

  A substrate transfer device according to a second aspect is the substrate transfer device according to the first aspect, wherein the roller member is made of a material harder than the guide member.

In the present invention, when the substrate supplied to the substrate entrance is displaced laterally with respect to the substrate movement area defined by the left and right guide members, one of the left and right tip portions of the substrate is left and right. The roller member abuts on one outer peripheral surface of the roller member and the roller member rotates about the vertical axis, and the entire substrate is moved inward of the substrate movement region, so that the positional deviation is corrected. Since the impact received by the roller member when the roller member abuts on the roller member is absorbed by the rotation of the roller member itself, the roller member hardly forms a dent itself, and the roller member has a dent, and the dent is formed on the substrate. Even if the tip is caught, the roller member can be rotated to prevent the entire substrate from being caught between the left and right guide members. Even if composed of large material of frictional resistance of a hard, such as click, the substrate clogging is very unlikely to occur. Further, since the roller member is configured as a separate member from the guide member, even if a dent is generated on the roller member, only the roller member needs to be replaced in that case, and there is no need to replace the entire guide member.

  Further, since the roller member is configured as a separate member from the guide member, the material of the roller member (the outer peripheral surface portion of the roller member) and the material of the guide member (the guide surface portion of the guide member) are different. If the roller member is made of a material harder than the guide member, the roller member can be made more difficult to be dented without greatly increasing the cost.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a component mounter equipped with a board transfer device according to an embodiment of the present invention, FIG. 2 is a plan view of the component mounter according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4A is a perspective view and FIG. 4B is a cross-sectional view of the substrate transfer apparatus in the embodiment of FIG. 4. FIG. 4A is a partial plan view of the substrate transfer apparatus in the embodiment of the present invention. ) Cross-sectional views, FIGS. 5A, 5B, and 5C are partially enlarged plan views of the substrate transfer apparatus according to the embodiment of the present invention, and FIG. 6 shows the substrate transfer apparatus according to the embodiment of the present invention. It is a top view of the component mounting line which consists of a plurality of component mounting machines provided.

  1 and 2, the component mounting machine 1 includes a substrate transfer device 3 according to an embodiment of the present invention on a base 2, and a substrate B supplied to the substrate inlet 4 by the substrate transfer device 3 is provided. It is conveyed in one direction (X-axis direction) in the horizontal plane and discharged from the substrate outlet 5. A Y-axis table 6 is provided above the substrate transfer device 3 so as to extend in a direction (Y-axis direction) orthogonal to the X-axis direction. Two parallel slide guides 7 are provided on the side surface of the Y-axis table 6 so as to extend in the Y-axis direction, and two Y-axis sliders 8 are provided along the slide guides 7 in the two slide guides 7. It is provided movably (that is, in the Y-axis direction). One end of an X-axis table 9 extending in the X-axis direction is attached to each Y-axis slider 8, and each X-axis table 9 is movable along the X-axis table 9 (that is, in the X-axis direction). A moving stage 10 is provided.

  A mounting head 11 is attached to each moving stage 10, and each mounting head 11 is provided with a plurality of suction nozzles 12 extending downward in the vertical direction (Z-axis direction). A plurality of parts feeders 13 for supplying components (not shown) to the mounting head 11 are provided side by side in the X-axis direction in a side region in the Y-axis direction of the substrate transport apparatus 3. Each mounting head 11 is provided with a substrate camera 14 with the imaging surface facing downward, and a component camera 15 with the imaging surface facing upward is provided on the base 2.

  In component mounting, first, the substrate B is transported in the X-axis direction by the substrate transport device 3 and positioned at a predetermined mounting work position. The moving stage 10 is moved relative to the substrate B positioned at the mounting work position by the movement of the X-axis table 9 in the Y-axis direction and the movement of the moving stage 10 itself in the X-axis direction, and the substrate camera 14 is moved. Located above the substrate B. Then, image recognition of a position detection mark (not shown) on the substrate B is performed by the substrate camera 14, and the amount of displacement from the reference position of the substrate B is obtained.

When the positional deviation amount of the substrate B is obtained, the parts supplied by the parts feeder 13 are picked up by the suction nozzle 12 provided in the mounting head 11. The picked-up component is moved above the component camera 15 (within the field of view of the component camera 15) by the movement of the mounting head 11, and after the component camera 15 recognizes the image of the component, it is mounted on the substrate B. Is done. At this time, since the positional deviation of the board B obtained by the image recognition of the position detection mark of the board B and the deviation (suction deviation) of the part obtained by the image recognition of the part with respect to the suction nozzle 12 are corrected. It is mounted at the correct position on the substrate B.

  Next, the configuration and operation of the board transfer device 3 provided in the component mounter 1 will be described with reference to FIGS. 3 and 4. FIG. 3A is a perspective view of the substrate transfer apparatus 3, and FIG. 3B is a cross-sectional view as seen from the arrow V1-V1 in FIG. 4 shows a part of the substrate transfer device 3 on the substrate inlet 4 side. FIG. 4 (a) is a plan view, FIG. 4 (b) is a side view, and FIG. 4 (c) is FIG. It is sectional drawing seen from the arrow V2-V2 of a).

  3A and 3B, the substrate transfer device 3 serves as a substrate moving unit that moves the substrate B supplied to the substrate inlet 4 in a certain direction (X-axis direction) and discharges it from the substrate outlet 5. A belt conveyor mechanism 20 is provided. The belt conveyor mechanism 20 includes left and right bases 21 provided on the base 2 so as to extend in the X-axis direction, and left and right transport belts 22 attached to the left and right bases 21. It is stretched around a plurality of pulleys 23 provided on the base 21 of the motor. The upper part of the conveyor belt 22 that is stretched around the pulley 23 and has two upper and lower stages is formed on the lower surface (the conveyor belt 22 of the conveyor belt 22 by a belt support part 21 a provided on the inner surface side of the base 21 so as to extend in the X-axis direction. The inner peripheral surface side is supported (see also FIGS. 4B and 4C).

  3 (a) and 3 (b), a rotating shaft 24a of a drive motor 24 fixed to the base 21 is connected to one of a plurality of pulleys 23 around which the conveyor belt 22 is stretched. By driving these drive motors 24, the respective conveyor belts 22 can travel in the X-axis direction, and the substrate B on which the left and right end portions are placed on the upper surfaces of the left and right conveyor belts 22 can be conveyed. (See arrow A1 shown in FIGS. 1, 2 and 3). The substrate inlet 4 corresponds to the upstream end of the substrate transport apparatus 3 in the traveling direction (X-axis direction) of the substrate B, and the substrate outlet 5 is the downstream end of the substrate transport apparatus 3 in the traveling direction of the substrate B. It corresponds to the part.

  3A and 3B, a guide member 27 is provided on the upper surface side of each of the left and right bases 21 so as to extend in the X-axis direction. Each guide member 27 covers the outer end side of the transport belt 22 from above, and the vertical side edges on the inner side thereof are the left and right side end surfaces S of the substrate B transported by the transport belt 22 (FIGS. 1 and FIG. 1). 3), the guide surface 28 holds the substrate B being conveyed in a fixed posture.

  3 (a), 3 (b) and 4 (a), 4 (b), and 4 (c), the end of the left and right guide members 27 on the substrate inlet 4 side has a vertical axis (an axis extending in the vertical direction). ), And a roller member 31 is rotatably supported on the roller member support shaft 30.

  The roller member 31 is closer to the front side (see FIGS. 4A and 4B) than the end P of the guide surface 28 of the guide member 27 on the substrate inlet 4 side (see FIGS. 4A and 4B). In the portion on the left side, a roller surface 32 that is a cylindrical outer peripheral surface is provided so as to contact an extended surface 28 a (see FIG. 4A) of the guide surface 28 of the guide member 27.

4 (b) and 4 (c), the upper surface of the conveyor belt 22 supported by the belt support portion 21a has a slight clearance Δ between the lower surface of the roller member 31 positioned above it. The roller member 31 is not dragged by the conveyor belt 22 and rotated around the roller member support shaft 30 while the conveyor belt 22 is being driven by the drive motor 24.

  As shown in FIG. 4A, the roller member 31 is provided in a space SP formed by cutting out a part of the guide member 27 on the substrate inlet 4 side. Further, the inner surface 34 of the tip portion 33 located on the near side is located on the outer side (the outer side in the Y-axis direction, the upper side in FIG. 4A) of the guide surface 28. Therefore, the interval between the inner surfaces 34 of the left and right tip members 33 is larger than the interval between the guide surfaces 28 of the left and right guide members 27, and the roller surfaces 32 of the left and right roller members 31 are located on the substrate inlet 4 side. A part is exposed. For this reason, the substrate B supplied from the substrate inlet 4 is transverse to the substrate movement region R defined by the left and right guide members 27 (the region between the left and right guide surfaces 28; see FIG. 3B). In the case where a positional shift occurs (in the horizontal direction perpendicular to the conveyance direction of the substrate B, here the Y-axis direction), one of the left and right tip portions of the substrate B is one of the left and right roller members 31. It comes into contact with the roller surface 32.

  When the substrate B is supplied to the substrate inlet 4 of the substrate transport apparatus 3 having such a configuration, the substrate B is received by the left and right transport belts 22 and then drawn into the substrate moving region R. Then, the left and right side end surfaces S are guided by the guide surfaces 28 of the left and right guide members 27 and are transported in a fixed posture, and are discharged from the substrate outlet 5 to the outside of the substrate transport device 3.

  Here, when the substrate B supplied to the substrate inlet 4 is not laterally displaced with respect to the left and right guide members 27, the substrate B has the left and right tip portions of either of the left and right roller members 31. The substrate B is moved in the X-axis direction as it is without being brought into contact with the substrate movement region R. However, when the substrate B is displaced laterally with respect to the substrate movement region R, as described above, One of the left and right tip portions of the substrate B comes into contact with one of the left and right roller members 31 (FIG. 5A). Then, the roller member 31 on the side in contact with the substrate B receives the pressing force from the substrate B and rotates around the roller member support shaft 30 (arrow A2 shown in FIGS. 5A and 5B). Accordingly, the entire substrate B is moved in the inner side (lateral direction) of the substrate movement region R, so that the lateral displacement of the substrate B is corrected, and the substrate B moves in the X axis direction in the substrate movement region R. You will be able to proceed to. That is, the left and right roller members 31 correct the lateral displacement of the substrate B in the substrate transfer device 3 so that the left and right side end surfaces S of the substrate B are along the guide surface 28 of the guide member 27. It functions as a board guide part for guiding.

  As described above, the substrate transport apparatus 3 according to the present embodiment is a belt serving as a substrate moving unit that moves the substrate B supplied to the substrate inlet 4 in a certain direction (X-axis direction) and discharges it from the substrate outlet 5. The conveyor mechanism 20 and the left and right side end surfaces S of the substrate B moved by the belt conveyor mechanism 20 are guided by a guide surface 28 extending in the transport direction (X-axis direction) of the substrate B so that the substrate B being transported is fixed. The left and right guide members 27 that hold the posture are provided, and the rollers that are the outer peripheral surfaces of the left and right guide members 27 are rotatable around the vertical axis (roller member support shaft 30) at the end portions on the substrate entrance 4 side. The surface 32 includes a roller member 31 that is in contact with the extended surface 28 a of the guide surface 28 of the guide member 27.

As described above, when the substrate B supplied to the substrate inlet 4 is displaced in the lateral direction with respect to the substrate movement region R defined by the left and right guide members 27, One of the leading ends abuts on one outer peripheral surface (roller surface 32) of the left and right roller members 31, and the roller member 31 rotates around the roller member support shaft 30, so that the entire substrate B is directed inward of the substrate movement region R. However, the impact received by the roller member 31 when it makes contact with the substrate B is absorbed by the rotation of the roller member 31 itself. However, even if a dent is generated on the roller member 31 and the tip of the substrate B is caught on the dent, the roller member 31 rotates to Since the situation where the entire B is sandwiched between the left and right guide members 27 can be avoided, even when the substrate B is made of a hard material having a high frictional resistance such as ceramic, the substrate is hardly clogged. . Further, since the roller member 31 is configured as a separate member from the guide member 27, even if a dent is generated in the roller member 31, only the roller member 31 needs to be replaced in that case, and the entire guide member 27 is replaced. do not have to.

  Further, since the roller member 31 is configured as a separate member from the guide member 27, the material of the roller member 31 (the portion of the roller surface 32) is different from the material of the guide member 27 (the portion of the guide surface 28). If the roller member 31 is made of a material harder than the guide member 28, the roller member 31 can be made more difficult to generate a dent without greatly increasing the cost.

  By the way, the component mounting machine 1 provided with the said board | substrate conveyance apparatus 3 can arrange a plurality, and can comprise the component mounting line 40 as shown in FIG. In such a component mounting line 40, a plurality of substrate transfer devices 3 are arranged in series in the transfer direction of the substrate B, and the substrate B is transferred between the adjacent substrate transfer devices 3 while being upstream. To the component mounting machine 1 on the downstream side. At this time, the board B is discharged from the board outlet 5 of the board conveying device 3 of the upstream component mounting machine 1 and then supplied as it is to the board inlet 4 of the board conveying apparatus 3 of the downstream component mounting machine 1. However, even if the substrate B is displaced in the lateral direction when the substrate B is transferred between the adjacent substrate transfer apparatuses 3, the position shift of the substrate B is a roller member included in each substrate transfer apparatus 3. Therefore, the substrate B can be smoothly transferred between the adjacent substrate transfer apparatuses 3. This effect is achieved not only when the substrate transfer device 3 is arranged in series between a plurality of component mounting machines 1 as in the component mounting line 40, but also with a plurality of units provided in one component mounting machine 1. This is also obtained when the substrate transfer devices 3 are arranged in series.

  Although the embodiments of the present invention have been described so far, the present invention is not limited to those shown in the above-described embodiments. For example, in the above-described embodiment, the roller member 31 is provided in the space SP formed by cutting out a part of the guide member 27 on the substrate inlet 4 side, but the roller member 31 is provided in the substrate inlet of the guide member 27. It suffices if the outer peripheral surface (roller surface 32) is provided at the end portion on the 4 side so as to be rotatable about the vertical axis (roller member support shaft 30) and to be in contact with the extended surface 28a of the guide surface 28 of the guide member 27. The space SP formed by cutting out a part of the guide member 27 is not necessarily provided.

  In the above-described embodiment, the upper surface of the conveyance belt 22 supported by the belt support portion 21 a has a slight clearance Δ between the upper surface of the roller belt 31 and the lower surface of the roller member 31. While the conveyor belt 22 is running, the roller member 31 is not dragged by the conveyor belt 22 to rotate around the roller member support shaft 30, but on the contrary, the belt support portion 21a The upper surface of the supported conveyor belt 22 is brought into contact with the lower surface of the roller member 31 positioned above the roller belt 31, and the roller member 31 is dragged by the conveyor belt 22 while the conveyor belt 22 is running. You may make it always rotate in the rotation direction (direction of arrow A2 shown in FIG. 5 (a), (b)) which corrects the position shift of a horizontal direction. Thus, by always rotating the roller member 31 in the rotational direction for correcting the lateral displacement of the substrate B, the front end of the substrate B can be prevented without disturbing the function of correcting the lateral displacement of the substrate B. It is possible to weaken the impact when the portion comes into contact with the roller member 31, thereby making it difficult for the roller member 31 to form a dent.

Further, in the above-described embodiment, the substrate moving means for moving the substrate B supplied to the substrate inlet 4 in a certain direction and discharging it from the substrate outlet 5 is the transport belt 22 spanned between the plurality of pulleys 23. Is a belt conveyor mechanism 20 that drives the substrate B in a certain direction and places and transports the substrate B. However, the substrate moving means is not limited to the belt conveyor mechanism 20, and a mechanism having another configuration (for example, A mechanism that pushes the substrate B toward the substrate outlet 5 side by a moving member that moves along the guide member 27, a mechanism that hooks a part of the substrate B supplied to the substrate inlet 4 and pulls it toward the substrate outlet 5 side, etc. ). Moreover, the board | substrate conveyance apparatus of this invention is not restricted to the component mounting machine 1 shown in this Embodiment, It is applicable to all apparatuses which convey a board | substrate and work, such as a screen printing apparatus and a board | substrate inspection apparatus. it can.

  Provided is a substrate transfer device in which substrate clogging is unlikely to occur.

The perspective view of the component mounting machine provided with the board | substrate conveyance apparatus in one embodiment of this invention The top view of the component mounting machine in one embodiment of this invention BRIEF DESCRIPTION OF THE DRAWINGS (a) Perspective view (b) Cross section of substrate transport apparatus in one embodiment of the present invention (A) top view (b) side view (c) cross-sectional view of a part of a substrate transfer apparatus according to an embodiment of the present invention (A) (b) (c) The elements on larger scale of the board | substrate conveyance apparatus in one embodiment of this invention The top view of the component mounting line which consists of several component mounting machines provided with the board | substrate conveyance apparatus in one embodiment of this invention

Explanation of symbols

3 Substrate transfer device 4 Substrate inlet 5 Substrate outlet 20 Belt conveyor mechanism (substrate moving means)
27 Guide member 28 Guide surface 28a Extension surface of guide surface 30 Roller member support shaft (vertical shaft)
31 Roller member 32 Roller surface (outer peripheral surface)
B substrate S side edge of substrate

Claims (2)

  A substrate moving means for moving the substrate supplied to the substrate inlet in a certain direction and ejecting it from the substrate outlet, and left and right side end surfaces of the substrate moved by the substrate moving means are guided by guide surfaces extending in the substrate transport direction. And a left and right guide member for holding the substrate being transported in a fixed posture, each of the left and right guide members being rotatable about a vertical axis at the end of the substrate entrance side. A substrate transport apparatus comprising a roller member whose outer peripheral surface is in contact with an extended surface of a guide surface of a guide member.   The substrate transport apparatus according to claim 1, wherein the roller member is made of a material harder than the guide member.

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