Component mounting apparatus
The component mounting device addresses the issue of substrate detection errors by using a partition unit and support structures to keep the optical path clear of wear debris, ensuring accurate substrate positioning and transport.
Patent Information
- Application Number
- JP2024121047
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2026-02-05
AI Technical Summary
The accumulation of wear debris from the endless belt on the optical sensor in a component mounting device causes errors in substrate detection due to partial coverage of the light-emitting or light-receiving surfaces.
A partition unit is provided on the base unit to separate the optical path from the support member, preventing wear debris from entering and accumulating on the optical path, and rollers or wall-like structures are used to support the endless belt and prevent debris from reaching the optical path.
Prevents errors in substrate detection by maintaining the optical sensor's functionality by keeping the light path clear of wear debris, ensuring stable substrate transport and accurate positioning.
Smart Images
Figure 2026019469000001_ABST
Abstract
Description
[Technical Field]
[0001] The present disclosure relates to a component mounting device that uses an optical sensor to detect and position a substrate transported by a substrate transport unit, and then mounts components on the positioned substrate using a mounting head. [Background technology]
[0002] A component mounting device includes a conveyor as a board transport unit that transports and positions boards, and a mounting head that mounts components on the boards positioned by the conveyor. In a component mounting device configured as described above, the conveyor is equipped with an optical sensor that detects the position of the board being transported and is used for controlling the positioning of the board. The optical sensor includes a light-emitting unit that emits inspection light and a light-receiving unit that receives the inspection light, and detects the position of the board based on whether the light-receiving unit receives the inspection light that has been blocked by (or reflected from) the board.
[0003] In a component mounting device configured as described above, the conveyor includes a pair of bases arranged opposite each other in a direction intersecting the board transport direction, and an endless belt provided to run freely on the opposing inner surfaces of the pair of bases. Optical sensors (light emitter and light receiver) are attached to the bases, and the bases are provided with an optical path through which inspection light passes (for example, see Patent Document 1 below). [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-204448 Summary of the Invention [Problem to be solved by the invention]
[0005] The endless belt of a conveyor is generally made of rubber or resin, and wears due to friction with the drive pulley that drives the endless belt, generating fine wear debris. The wear debris generated between the endless belt and the drive pulley adheres to the backside of the endless belt and is carried through the conveyor. When the endless belt reaches the top surface of the support member that supports it, it is scraped off the endless belt by the edge of the support member and scattered. Some of the scattered wear debris accumulates on the bottom of the optical path, and as the amount of accumulated debris increases, it can cover part of the optical sensor (part of the light-emitting surface or part of the light-receiving surface), causing the optical sensor to fail to detect the substrate.
[0006] Therefore, an object of the present disclosure is to provide a component mounting device that can prevent the occurrence of errors in detecting a substrate caused by wear particles from the endless belt accumulating and covering part of an optical sensor. [Means for solving the problem]
[0007] The component mounting device of the present disclosure is a component mounting device comprising a substrate transporting unit that supports a substrate and transports it to a work position, and a mounting head that mounts components on the substrate transported to the work position, wherein the substrate transporting unit comprises a pair of base units arranged opposite each other in a second direction that intersects with a first direction that is the transport direction of the substrate, an endless belt that is provided on opposing inner surfaces of the pair of base units and is capable of running freely in the first direction, and a support member that supports the endless belt from below, and at least one of the pair of base units is provided with an optical sensor that detects the substrate transported by the substrate transporting unit by emitting and receiving inspection light, and an optical path that allows the inspection light to pass in the second direction, and a partition unit that separates an opening on the inner surface of the optical path from the support member is provided on the inner surface of the base unit in which the optical path is provided. [Effects of the Invention]
[0008] According to the present disclosure, it is possible to prevent errors in detecting a substrate caused by a portion of an optical sensor being covered by abrasion powder accumulated on the endless belt. [Brief explanation of the drawings]
[0009] [Figure 1] 1 is a side view of a main portion of a component mounting device according to a first embodiment of the present disclosure. [Figure 2] 1 is a plan view of a main portion of a component mounting device according to a first embodiment of the present disclosure. [Figure 3] 1 is a plan view showing a state in which a conveyor included in the component mounting device according to the first embodiment of the present disclosure is transporting a board. [Figure 4] 1A is a side view of a conveyor included in a component mounting device according to a first embodiment of the present disclosure, and FIG. 1B is an enlarged view of an area AR in the side view. [Figure 5] FIG. 2 is a cross-sectional view of a conveyor included in the component mounting device according to the first embodiment of the present disclosure. [Figure 6] 1 is a perspective view of a portion of a conveyor included in a component mounting device according to a first embodiment of the present disclosure. [Figure 7] FIG. 2 is a block diagram showing a control system of the component mounting device according to the first embodiment of the present disclosure. [Figure 8] 2 is an enlarged side view of a portion of a conveyor included in the component mounting device according to the first embodiment of the present disclosure. FIG. [Figure 9] 2 is an enlarged side view of a portion of a conveyor included in the component mounting device according to the first embodiment of the present disclosure. FIG. [Figure 10] FIG. 11 is an enlarged side view of a portion of a conveyor included in a component mounting device according to a second embodiment of the present disclosure. [Figure 11] 11(a) and 11(b) are enlarged side views of a portion of a conveyor included in a component mounting device according to a third embodiment of the present disclosure. [Figure 12] FIG. 11 is an enlarged side view of a portion of a conveyor included in a component mounting device according to a fourth embodiment of the present disclosure. [Figure 13] 10(a) is an enlarged side view of a portion of a conveyor included in a component mounting device according to a fifth embodiment of the present disclosure, and FIG. 10(b) is a cross-sectional view of the enlarged side view. [Figure 14]13(a) is an enlarged side view of a portion of a conveyor included in a component mounting device according to a sixth embodiment of the present disclosure, and FIG. 13(b) is a cross-sectional view of the enlarged side view. DETAILED DESCRIPTION OF THE INVENTION
[0010] (Embodiment 1) 1 shows a component mounting device 1 according to a first embodiment of the present disclosure. The component mounting device 1 is a device that mounts components BH on a board KB sent from the upstream side and carries it out downstream. For ease of explanation, the transport direction of the board KB in the component mounting device 1 is defined as the X direction (the left-right direction as seen from the operator OP, a first direction), the horizontal direction perpendicular to the X direction (the front-back direction as seen from the operator OP, a second direction) is defined as the Y direction, and the up-down direction is defined as the Z direction.
[0011] In FIG. 1, the component mounting device 1 includes a base 11, a conveyor 12, a plurality of component feeders 13, a mounting head 14, and a head moving mechanism 15.
[0012] 1 and 2, conveyor 12 functions as a substrate transport unit and is provided on base 11. As shown in FIGS. 2 and 3, conveyor 12 includes a pair of base portions 21 extending in the X direction on base 11 and arranged opposite each other in the Y direction (a direction intersecting the X direction, which is the transport direction of substrates KB). A plurality of pulleys (one drive pulley 22a and a plurality of driven pulleys 22b) are provided on inner surfaces 21a (FIG. 3), which are the opposing surfaces of each of the pair of base portions 21, as shown in FIG. 4(a), and an endless belt 23 is stretched across these plurality of pulleys 22. The endless belt 23 is made of, for example, rubber, resin, or the like.
[0013] 3 and 4(a), a drive motor 24 is provided on the base portion 21. When the drive pulley 22a is driven by the drive motor 24, the endless belt 23 runs in the X direction. The two endless belts 23 run while supporting two ends of the substrate KB facing each other in the Y direction from below, thereby transporting the substrate KB in the X direction (arrow A shown in FIG. 3).
[0014] 4(a) and 5 (FIG. 5 is a cross-sectional view taken along the line V1-V1 in FIG. 3), support members 25 that support the endless belt from below are provided on the inner surface 21a of each of the two base portions 21. In the first embodiment, three support members 25 are provided side by side in the X direction for each base portion 21 (FIG. 4(a)). A tapered surface 25M that slopes downward toward the end in the X direction is formed on the edge of each support member 25 in the transport direction (X direction) of the substrate KB, as shown in FIG. 4(b) (FIG. 4(b) is an enlarged view of an area AR shown in FIG. 4(a)).
[0015] Thus, in embodiment 1, the conveyor 12 serving as the substrate transport section is configured to include a pair of base sections 21 arranged opposite each other in the Y direction (second direction) that intersects with the X direction (first direction), which is the transport direction of the substrate KB, and an endless belt 23 provided on the opposing inner surfaces 21a of the pair of base sections 21 and capable of running freely in the X direction.
[0016] 1, a cart 11D is connected to the end of the base 11 on the front side (left side of the paper in FIG. 1) as seen from the operator OP in the Y direction. A feeder base 11F is provided on the top of the cart 11D, and multiple part feeders 13 are detachably mounted on the feeder base 11F (see also FIG. 2).
[0017] 1 and 2, each parts feeder 13 continuously supplies parts BH to a parts take-out position 13T set at the end on the far side in the Y direction as seen from the operator OP (the right side of the paper in FIG. 1). In this case, the parts feeder 13 is a tape feeder that pulls out a component supply tape BT, which contains a large number of parts BH arranged in a row, from a reel RL and transports the tape by a sprocket 13S to the far side as seen from the operator OP, thereby supplying the parts BH to the parts take-out position 13T.
[0018] 1, the mounting head 14 is equipped with a plurality of nozzles 14N extending downward. The mounting head 14 is capable of generating a suction force for the component BH by using negative pressure at the lower ends of the nozzles 14N. The head movement mechanism 15 is, for example, an XY table, and moves the mounting head 14 in a horizontal plane (XY plane).
[0019] 2 and 3, each of the pair of base portions 21 is provided with an optical sensor 30 that detects the substrate KB transported by the endless belt 23. The optical sensor 30 is composed of a light projector 31 as a light projecting portion that projects inspection light 30L and a light receiver 32 as a light receiving portion that receives the inspection light 30L. The light projector 31 is provided on one of the two base portions 21, and the light receiver 32 is provided on the other of the two base portions 21. In the first embodiment, two sets of optical sensors 30 (light projector 31 and light receiver 32) are provided in the transport direction (X direction) of the substrate KB, and each is disposed in a region between three support members 25 arranged side by side in the X direction (FIG. 4).
[0020] 4(a), (b), 5, and 6, each of the two base portions 21 is provided with a light path 21T for passing the inspection light 30L of the optical sensor 30 in the Y direction (second direction). Here, the light path 21T is made of a notch formed by cutting out the upper edge side of the base portion 21 so as to penetrate through the thickness direction (Y direction) of the base portion 21.
[0021] 5 and 6, the optical path 21T has an opening 21K that opens to the inner surface 21a of the base portion 21 in which the optical path 21T is provided. The optical sensor 30 projects and receives the inspection light 30L through the opening 21K of the optical path 21T. In detail, the projector 31 projects the inspection light 30L to the optical receiver 32 through the opening 21K of the optical path 21T formed in the base portion 21 in which the projector 31 is provided, and the optical receiver 32 receives the inspection light 30L through the opening 21K of the optical path 21T formed in the base portion 21 in which the receiver 32 is provided.
[0022] 5 and 6, two optical sensors 30 (light projector 31 and light receiver 32) are provided on the outer surface 21b opposite to the inner surface 21a of the corresponding base portion 21. As shown in FIG. 4(b), a width H1 of the optical sensor 30 along the X direction is smaller than a width H2 of the optical path 21T along the X direction, so that part of the inspection light 30L is not blocked by the base portion 21.
[0023] 4(a) and 4(b), a plurality of rolling members (rollers 33) are provided on the inner surface 21a of each of the pair of base portions 21. Each roller 33 functions as a belt support member that supports the endless belt 23 from below, and also functions as a partition that separates the edge of the support member 25 in the transport direction (X direction) of the substrate KB from the opening 21K of the light path 21T. In the first embodiment, two rollers 33 are provided at positions sandwiching, in the X direction, two optical sensors 30 (two sets) positioned side by side in the transport direction (X direction) of the substrate KB (FIG. 4(a)).
[0024] 7, a control unit 40 provided in the component mounting device 1 controls the operations of the conveyor 12, the multiple part feeders 13, the mounting head 14, and the head moving mechanism 15. The control unit 40 controls the operation of the conveyor 12 to transport the board KB and position it at the work position, and controls the operation of each part feeder 13 to supply components BH to the respective component take-out positions 13T. The control unit 40 also controls the head moving mechanism 15 to move the mounting head 14 in a horizontal plane, and controls the mounting head 14 to have the nozzle 14N pick up the components BH supplied by the part feeders 13.
[0025] 7, the control unit 40 is connected to the optical sensor 30 (light projector 31 and light receiver 32) (see also FIG. 5), and while the light projector 31 projects inspection light 30L, the control unit 40 determines the position of the substrate KB based on the state of reception of the inspection light 30L by the light receiver 32. Specifically, when the light receiver 32 receives the inspection light 30L, the control unit 40 determines that the substrate KB is not positioned to block the inspection light 30L, and when the light receiver 32 does not receive the inspection light 30L, the control unit 40 determines that the substrate KB is positioned to block the inspection light 30L.
[0026] When component mounting device 1 having such a configuration performs a component mounting operation of mounting components BH on board KB, control unit 40 first causes conveyor 12 to carry in board KB supplied from outside component mounting device 1. At this time, control unit 40 controls the operation of conveyor 12 based on position information of board KB detected by optical sensor 30, so that board KB is positioned at a predetermined work position.
[0027] Once the conveyor 12 has positioned the board KB at the work position, the control unit 40 operates each part feeder 13 to supply parts BH to the part take-out position 13T of each part feeder 13. In parallel with this, the control unit 40 operates the head movement mechanism 15 to move the mounting head 14 back and forth between the part feeder 13 and the board KB.
[0028] The mounting head 14 moves back and forth between the parts feeder 13 and the board KB, repeatedly performing a mounting turn consisting of an operation of picking up components BH supplied by the parts feeder 13 and an operation of mounting the picked-up components BH onto the board KB. When the mounting head 14 has repeatedly performed the above mounting turn and all of the components BH to be mounted on the board KB have been mounted, the control unit 40 operates the conveyor 12 to transport the board KB out of the component mounting device 1. This completes the component mounting operation for one board KB.
[0029] As mentioned above, the endless belt 23 is made of rubber, resin, or the like. Therefore, the endless belt 23 wears due to friction with the drive pulley 22a, generating fine wear debris MK. The wear debris MK generated between the endless belt 23 and the drive pulley 22a is carried within the conveyor 12 while adhering to the back surface of the endless belt 23, as shown in Figure 8. When the endless belt 23 reaches the upper surface of the support member 25 that supports it, the wear debris MK is scraped off from the endless belt 23 by the edge (tapered surface 25M) of the support member 25 and scattered directly, or it is deposited on the tapered surface 25M and then scattered.
[0030] The drive motor 24 is adapted to rotate in either direction to move the endless belt 23. Therefore, wear particles MK generated from the endless belt 23 fly off from the edges on both sides in the X direction of each support member 25, or are deposited on the tapered surfaces 25M of the edges on both sides and then fly off (FIG. 9).
[0031] Some of the wear powder MK that is generated and scattered from the endless belt 23 may enter the optical path 21T through the opening 21K provided in the inner surface 21a of the base portion 21, and then adhere to and accumulate on the bottom surface 21M (FIGS. 4(b) and 6) of the optical path 21T. If the amount of wear powder MK that adheres to and accumulates on the bottom surface 21M of the optical path 21T is small, there is no problem. However, if the amount of accumulation increases, it may block part of the light-emitting surface of the light-emitter 31 or the light-receiving surface of the light-receiver 32, which may prevent the optical sensor 30 from properly detecting the substrate KB.
[0032] However, in the component mounting device 1 of the first embodiment, rollers 33 are provided on the inner surface 21a of each of a pair of base portions 21 of the conveyor 12 as partitions that separate the space between the support member 25 and the opening 21K, and these rollers 33 prevent wear debris MK scattered from the edge of the support member 25 from entering the light path 21T. Therefore, in the first embodiment, wear debris MK is prevented from accumulating on the bottom surface 21M of the light path 21T, and the occurrence of detection errors of the substrate KB due to partial coverage of the optical sensor 30 is suppressed. Furthermore, the rollers 33 are in full contact with the lower surface of the endless belt 23 and support the endless belt 23 from below, thereby enabling stable running of the endless belt 23 and stable transport of the substrate KB.
[0033] (Embodiment 2) Next, a second embodiment of the present disclosure will be described. The component mounting device 1 in the second embodiment differs from the first embodiment only in the partitioning portion of the conveyor 12, and the other configurations are the same as those of the first embodiment. In Fig. 10, the partitioning portion in the second embodiment differs from the rolling members (rollers 33) in the first embodiment, and is made up of wall-like portions 33W, which are two wall portions extending in the vertical direction (Z direction) and whose upper ends 33T are located close to (i.e., slightly spaced apart from) the endless belt 23, and a concave member 33A equipped with a connecting portion 33R that connects the lower ends of these two wall-like portions 33W.
[0034] 10, the recessed member 33A, which serves as a partition, is positioned such that the two wall portions 33W each separate the optical sensor 30 from the two support members 25 positioned on either side of the optical sensor 30 in the X direction. Therefore, wear debris MK scattered from the edges (tapered surfaces 25M) of the support members 25 is blocked by the two wall portions 33W and is less likely to reach the optical path 21T. Therefore, in the second embodiment, as in the first embodiment, wear debris MK is prevented from accumulating on the bottom surface 21M of the optical path 21T, and the occurrence of detection errors of the substrate KB of the optical sensor 30 due to the covering of a portion of the optical sensor 30 (a portion of the light-emitting surface or the light-receiving surface) is suppressed. However, in the second embodiment, the upper ends 33T of the two wall portions 33W are spaced downward from the endless belt 23, so the rate at which wear debris MK reaches the optical path 21T is slightly higher than in the first embodiment.
[0035] (Embodiment 3) Next, a third embodiment of the present disclosure will be described. As in the second embodiment, the component mounting device 1 in the third embodiment differs from the first embodiment only in the partitioning portion of the conveyor 12.
[0036] 11(a), the partition section of the third embodiment is made up of two walls (plate members 33B) corresponding to the two wall-shaped sections 33W of the recessed member 33A of the second embodiment. Like the two wall-shaped sections 33W of the recessed member 33A of the second embodiment, the two plate members 33B are each positioned between the optical sensor 30 and the edge of the support member 25, and therefore, the same effect as in the second embodiment can be obtained. The upper portions 33J of the two plate members 33B may be bent in a direction away from the optical sensor 30, as shown in FIG. 11(b).
[0037] (Fourth embodiment) Next, a fourth embodiment of the present disclosure will be described. As shown in Fig. 12, the component mounting device 1 in the fourth embodiment is made up of two wall members 33C that are arranged at positions corresponding to the two plate members 33B in the third embodiment and extend in the vertical direction. These two wall members 33C are made of an elastic member such as sponge or rubber, and their upper surfaces 33F contact the endless belt 23 from below.
[0038] The two wall members 33C have the same function as the two wall-shaped portions 33W in the second embodiment or the two plate members 33B in the third embodiment. Therefore, the same effects as those of the second and third embodiments can be obtained in the fourth embodiment. However, because the upper surfaces 33F of the two wall members 33C contact the endless belt 23 from below, wear powder MK scattered from the edge (tapered surface 25M) of the support member 25 is less likely to enter the light path 21T than in the second and third embodiments, and this effectively prevents the wear powder MK from accumulating on the bottom surface 21M of the light path 21T. Furthermore, the wall members 33C made of an elastic material contact the lower surface of the endless belt 23 and support the endless belt 23 from below, and therefore function as belt support members similar to the rollers 33 in the first embodiment. Therefore, similar to the first embodiment, the endless belt 23 can travel stably and the substrate KB can be transported stably.
[0039] (Embodiment 5) Next, a fifth embodiment of the present disclosure will be described. In the component mounting device 1 according to the fifth embodiment, as shown in Fig. 13(a) and Fig. 13(b) (Fig. 13(b) is a cross-sectional view taken along the arrows V2-V2 in Fig. 13(a)), a partition (here, a roller 33) is provided between the edge (tapered surface 25M) of the support member 25 and the opening 21K of the light path 21T, and in addition, the bottom surface 21M of the light path 21T is an inclined surface that becomes lower from the inner surface 21a of the base portion 21 toward the outer surface 21b.
[0040] Therefore, even if wear powder MK scattered from the edge (tapered surface 25M) of the support member 25 reaches the bottom surface 21M of the light path 21T beyond the partition portion (roller 33), the wear powder MK slides down along the inclined bottom surface 21M to the outside of the base portion 21 (FIG. 13(b)), thereby preventing the wear powder MK from accumulating on the bottom surface 21M of the light path 21T. Note that the partition portion is not limited to the roller 33, and may be a concave member 33A, a plate member 33B, a wall member 33C, or the like.
[0041] Next, a sixth embodiment of the present disclosure will be described. In the component mounting device 1 according to the sixth embodiment, as shown in Fig. 14(a) and Fig. 14(b) (Fig. 14(b) is a cross-sectional view taken along the arrows V3-V3 in Fig. 14(a)), a partition (here, roller 33) is provided between the edge (tapered surface 25M) of the support member 25 and the opening 21K of the light path 21T, and in addition, the bottom surface 21M of the light path 21T is an inclined surface that becomes lower from the outer surface 21b of the base portion 21 toward the inner surface 21a.
[0042] For this reason, even if wear powder MK scattered from the edge (tapered surface 25M) of support member 25 reaches bottom surface 21M of light path 21T beyond the partition portion (roller 33), the wear powder MK slides down along bottom surface 21M consisting of an inclined surface into the inside of base portion 21 (FIG. 14(b)), preventing wear powder MK from accumulating on bottom surface 21M of light path 21T. Note that the partition portion here is not limited to roller 33, and may be concave member 33A, plate member 33B, wall member 33C, or the like.
[0043] As explained above, in the component mounting device 1 in the first to sixth embodiments, a partition section (roller 33, concave member 33A, plate member 33B, wall member 33C) is provided on the inner surface 21a of the base portion 21 to separate the opening 21K in the inner surface 21a of the optical path 21T from the support member 25, and this partition section prevents wear powder MK scattered from the edge of the support member 25 from entering the optical path 21T. Therefore, the component mounting device 1 in the first to sixth embodiments prevents wear powder MK from accumulating on the bottom surface 21M of the optical path 21T, and suppresses the occurrence of detection errors of the board KB due to a part of the optical sensor 30 being covered.
[0044] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above and various modifications are possible. For example, in the above-described embodiments, the parts feeder 13 is a tape feeder that feeds the parts supply tape BT to supply the parts, but the parts feeder 13 is not limited to a tape feeder and may be a stick feeder, a tray feeder, or the like.
[0045] Furthermore, in the above-described first to sixth embodiments, the optical sensor 30 has the light-emitter 31, which is a light-emitter unit that emits the inspection light 30L, and the light-receiver 32, which is a light-receiving unit that receives the inspection light 30L, disposed separately on the two base portions 21. However, the light-emitter and the light-receiving unit may be formed from the same device, which may be provided on one of the base portions 21. In this case, the light path 21T is provided only on the side of the pair of base portions 21 on which the optical sensor 30 is provided. Furthermore, although the light path 21T is formed from a notch cut out from the upper edge side so as to penetrate the base portion 21 in the thickness direction (Y direction), the light path 21T may be formed from a through-hole that penetrates the base portion 21 in the thickness direction (Y direction). [Industrial Applicability]
[0046] A component mounting device is provided that can suppress the occurrence of erroneous detection of a substrate due to a portion of an optical sensor being covered by accumulated wear powder from an endless belt. [Explanation of symbols]
[0047] 1. Parts mounting device 12 Conveyor (substrate transport section) 14 Mounting head 21 Base 21T optical path 21K opening 21M bottom 22 Pulley 23 Endless belt 24 Drive motor 25 Support member 25M tapered surface 30 Optical Sensor 30L inspection light 31 Floodlight 32 Receiver 33 Roller (rolling member) (partition) 33A Concave member (partition) 33B Plate member (wall portion) 33C Wall component (wall part) 33W wall part (wall part) 33F top surface MK wear debris BH parts KB board
Claims
1. A component mounting device including a board transport unit that supports a board and transports it to a work position, and a mounting head that mounts components on the board transported to the work position, The substrate transport unit includes: a pair of base portions disposed opposite to each other in a second direction intersecting a first direction that is a transport direction of the substrate; an endless belt provided on opposing inner surfaces of the pair of base portions and capable of running in a first direction; a support member that supports the endless belt from below, At least one of the pair of base portions is provided with an optical sensor that detects the substrate transported by the substrate transport portion by projecting and receiving inspection light, and an optical path that passes the inspection light in the second direction, a partition section that separates an opening in the inner surface of the optical path from the support member, the partition section being provided on the inner surface of the base section in which the optical path is provided;
2. 2. The component mounting device according to claim 1, wherein the partitioning section comprises a rolling member that supports the endless belt from below.
3. The component mounting device according to claim 1 , wherein the partition portion has a wall portion extending in the vertical direction.
4. 4. The component mounting device according to claim 3, wherein the partitioning portion is made of an elastic member that extends in the vertical direction and whose upper surface contacts the endless belt.
5. 2. The component mounting device according to claim 1, wherein the bottom surface of the optical path is an inclined surface that becomes lower from the inner surface of the base portion toward the outer surface opposite to the inner surface, or from the outer surface toward the inner surface.
Citation Information
Patent Citations
Cleaning jig and cleaning method of substrate position detection sensor
JP2012204448A