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Patent Information
- Application Number
- PCT/JP2025/012304
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-10-01
Smart Images
Figure JP2025012304_01102026_PF_FP_ABST
Abstract
Description
Transport carriage
[0001] The present specification discloses a transport carriage.
[0002] Conventionally, there has been proposed a mounting system that includes a plurality of mounting-related apparatuses that perform work related to component mounting processing, and a storage apparatus that stores a magazine capable of holding members for mounting processing, wherein a transport carriage on which the magazine is placed and transported transfers the magazine between the transport carriage and the storage apparatus.
[0003] International Publication No. 2023 / 021577
[0004] By the way, the floor height on which a mounting system is installed may vary greatly depending on the installation location. Therefore, if the height at which the transport carriage places the magazine is fixed at a predetermined height and cannot be adjusted, the difference in height from the storage apparatus becomes large, which may make it difficult to smoothly transfer the magazine.
[0005] The main object of the present disclosure is to provide a transport carriage that can appropriately cope with variations in the floor height on which a mounting system is installed.
[0006] The present disclosure adopts the following means to achieve the above-mentioned main object.
[0007] The transport carriage of the present disclosure is a transport carriage that transports a storage unit storing members used in a mounting system including a mounting-related apparatus that performs component mounting processing, and transfers the storage unit at a transport destination, comprising: a transfer conveyor having a plurality of rollers arranged side by side and a frame that rotatably supports the plurality of rollers, the transfer conveyor transferring the storage unit placed on the plurality of rollers to and from the transport destination; a vehicle body portion provided with a support portion that supports the frame of the transfer conveyor; and a height adjustment portion capable of adjusting the height position of the transfer conveyor. This is the gist of the invention.
[0008] Since the transport carriage of the present disclosure includes the height adjustment portion capable of adjusting the height position of the transfer conveyor, it can appropriately cope with variations in the floor height on which the mounting system is installed. In addition, this transport carriage contributes to the realization of a smart factory.
[0009] A schematic diagram of the implemented system 10. An external perspective view of the magazine 30. An external perspective view of the storage device 40. An overall external perspective view of the transport cart 50. An external perspective view of the top of the transport cart 50. An explanatory diagram showing an example of how the transport cart 50 transports the magazine 30. An exploded perspective view showing the support points of the transfer conveyor 51. An exploded perspective view showing the pin 67 of the spacer 66 and the insertion hole 65 of the support part 64. An explanatory diagram showing the height relationship between the storage device 40 and the transport cart 50. An explanatory diagram showing an example of how the magazine 30 is transferred. An explanatory diagram showing an example of how the magazine 30 is transferred. An explanatory diagram showing the usage state of the spacer 66. An explanatory diagram showing the storage state of the removed spacer 66. An overall external perspective view of a modified transport cart 150.
[0010] Next, embodiments of the present disclosure will be described with reference to the drawings. Figure 1 is a schematic diagram of the mounting system 10. Figure 2 is an external perspective view of the magazine 30. Figure 3 is an external perspective view of the storage device 40. Figure 4 is an overall external perspective view of the transport trolley 50. Figure 5 is an external perspective view of the upper part of the transport trolley 50. In this embodiment, the left-right direction (X-axis direction), front-back direction (Y-axis direction), and up-down direction (Z-axis direction) are as shown in each figure.
[0011] The mounting system 10 performs a mounting process that involves printing solder onto a substrate S and mounting components P onto the substrate S. It includes a plurality of mounting-related devices that perform tasks related to the mounting process. The plurality of mounting-related devices in the mounting system 10 include a printing device 11, a printing inspection device 12, a storage device 40, a plurality (for example, four) of mounting devices 14, a reflow device 15, and a mounting inspection device 16. These are arranged in order from the upstream side (left side) in the transport direction of the substrate S (X-axis direction in Figure 1). The mounting system 10 also includes a loader 18 and a transport cart 50 (automatic moving device 70, see Figure 6).
[0012] The printing device 11 prints solder as a viscous fluid onto the substrate S. The printing inspection device 12 takes an image of the substrate S on which the solder has been printed and inspects the solder printing condition. The mounting device 14 picks up the components P supplied by the feeder 20 and mounts them onto the substrate S on which the solder has been printed. The reflow device 15 heats the substrate S to melt the solder, then cools it to electrically connect and fix the components P on the substrate S. The mounting inspection device 16 takes an image of the substrate S on which the components P have been mounted and inspects the mounting condition of the components P.
[0013] The feeder 20 is a tape feeder having a tape reel 22 around which a tape 21 containing multiple components P is wound, a tape feeding mechanism 23, a connector 25, and a rail 27. Driven by the tape feeding mechanism 23, the feeder 20 feeds out a predetermined amount of tape 21 from the tape reel 22, sequentially supplying the components P contained on the tape to the picking positions of the mounting device 14.
[0014] The storage device 40 is located between the printing inspection device 12 and the mounting device 14, which is the upstreammost device in the transport direction of the substrate S. The storage device 40 stores a magazine 30, which is a storage unit capable of accommodating multiple feeders 20. As shown in Figure 2, the magazine 30 has a magazine body 31, slots 32, and connectors 35 for the feeders 20. The magazine body 31 is a rectangular parallelepiped housing. Multiple slots 32 are arranged in a left-right direction on the bottom surface of the rear opening of the magazine body 31. The slots 32 can hold the feeders 20 by inserting the rails 27 of the feeders 20 from the rear. Multiple connectors 35 are arranged in a left-right direction on the front inner surface of the magazine body 31. Each connector 25 of the feeder 20 inserted into the slot 32 is connected to each connector 35.
[0015] Furthermore, as shown in Figure 3, the storage device 40 is equipped with two magazine storage sections 42 arranged side by side, allowing two magazines 30 to be placed side by side. Each magazine storage section 42 is equipped with a mounting platform 44 on which the magazine 30 (magazine body 31) is placed, and a plurality of rollers 46 for transporting the magazine 30. The mounting platform 44 can be raised and lowered by a lifting mechanism (not shown), and can be raised and lowered to a height for transferring the magazine 30 between the transport trolley 50 and the loading platform 44, and to a height for the loader 18 to insert and remove the feeder 20 from the magazine 30. Multiple rollers 46 are arranged on both the left and right sides of the mounting platform 44 and on the rear side where the magazine 30 is inserted and removed, with their axial direction aligned with the left-right direction. Each roller 46 rotates by the drive of a motor (not shown) to move the magazine 30 to the front (rear) or rear side of the magazine storage section 42. Furthermore, the storage device 40 is equipped with leveling bolts 48 at the four corners of the bottom surface of the device body. By adjusting the amount of threading (threading depth) of the leveling bolts 48, the storage device 40 can adjust for variations in the floor height FL (see Figure 9), which is the height of the floor on which the storage device 40 is installed, and can also adjust for levelness.
[0016] The loader 18 is an exchange device that supplies and retrieves feeders 20 by transferring them between the magazine 30 in the magazine storage section 42 of the storage device 40 and the mounting device 14.
[0017] The transport trolley 50 includes a transfer conveyor 51 on which the magazine 30 is placed and transferred to a destination such as a storage device 40, a vehicle body 61 that supports the transfer conveyor 51, and a height adjustment unit 60 that adjusts the height of the transfer conveyor 51. The vehicle body 61 of the transport trolley 50 is connected to an automatic moving device 70 (see Figure 6). The automatic moving device 70 is configured as, for example, an AGV (Automatic Guided Vehicle) or an AMR (Autonomous Mobile Robot). The transport trolley 50 transports the magazine 30 by the automatic movement of the automatic moving device 70. In addition, the transport trolley 50 of this embodiment is equipped with four detachable spacers 66 as the height adjustment unit 60.
[0018] The transfer conveyor 51 comprises a conveyor frame 52, a plurality of rollers 54, a motor 55, a retractable bolt 57, and a holding part 59. The conveyor frame 52 has a pair of left and right frames 52L and 52R, and a rear frame 52B that connects the left frame 52L and the right frame 52R at the rear, and is open at the front. The left frame 52L and the right frame 52R rotatably support the plurality of rollers 54. In addition, the left frame 52L and the right frame 52R are each provided with legs 53 on the front and rear outer sides. In other words, a total of four legs 53 are provided.
[0019] Figure 7 is an exploded perspective view showing the support points of the transfer conveyor 51. In Figure 7, as an example, a leg portion 53 provided on the outside of the rear of the right frame 52R is shown. The leg portion 53 has a fixing plate 53a fixed so as to protrude outward from the conveyor frame 52 (in this case, the right frame 52R), a rod 53b attached to the fixing plate 53a so as to extend downward, and a contact portion (supported portion) 53c attached to the lower end of the rod 53b, the convex curved surface of which contacts the support portion 64 of the vehicle body 61. The transfer conveyor 51 is supported by the vehicle body 61 by each leg portion 53 of the conveyor frame 52 being supported by each support portion 64 of the vehicle body 61. Alternatively, the conveyor frame 52 may be directly supported by each support portion 64 of the vehicle body 61.
[0020] Multiple rollers 54 are arranged in a row in the front-to-back direction with their axial directions aligned with the left-to-right direction, and a magazine 30 can be placed on the rollers 54. A belt 56 is stretched between adjacent rollers 54 in the front-to-back direction. A motor 55 is mounted on the rear side of the left frame 52L of the conveyor frame 52 and rotates a pulley 55a. A belt 56 is stretched between the pulley 55a and the rearmost roller 54 of the multiple rollers 54, and the driving force of the motor 55 is transmitted to the roller 54 via the pulley 55a and the belt 56. When the driving force of the motor 55 is transmitted to the roller 54, it transmits the driving force to each roller 54 via the belt 56 stretched between each roller 54, causing each roller 54 to rotate. In this embodiment, a belt 56 is also stretched over the frontmost roller 54L of the multiple rollers 54, i.e., the leading roller 54L that is at the very front when conveying the magazine 30, and the driving force of the motor 55 is transmitted to the leading roller 54L as well. In other words, the transport trolley 50 is capable of driving the leading roller 54L of the transfer conveyor 51.
[0021] The retractable bolts 57 are provided on the front and rear sides of the left frame 52L and the right frame 52R. In other words, a total of four retractable bolts 57 are provided. These retractable bolts 57 are screwed into threaded holes (not shown) of the left frame 52L or the right frame 52R, and when tightened by the operator, they advance downward, i.e., toward the vehicle body 61, and come into contact with the upper surface of the vehicle body 61. When the retractable bolts 57 come into contact with the upper surface of the vehicle body 61, they are further tightened by the operator, using the upper surface as a support to move the transfer conveyor 51 upward and lift it away from the vehicle body 61. The retractable bolts 57 are formed to a length that allows the distance between the leg portion 53 (contact portion 53c) and the support portion 64 of the vehicle body 61 to be adjusted to be greater than or equal to the thickness T of the spacer 66 (see Figure 8) when the transfer conveyor 51 is lifted. Therefore, the operator can easily and safely attach and detach the spacer 66 by lifting the transfer conveyor 51 with the lifting bolt 57. The holding part 59 is located near the rear frame 52B and engages with the lower surface of the magazine 30 placed on the roller 54 to hold the magazine 30.
[0022] The vehicle body 61 comprises a vehicle frame 62 and support parts 64. The vehicle frame 62 has a plurality (for example, four) of casters 63 attached to its lower part. The support parts 64 support the transfer conveyor 51 (legs 53) and a total of four are provided on the upper part of the vehicle frame 62. The support parts 64 have a support plate 64a formed in the shape of a rectangle with the corners cut off when viewed from above, and a column part 64b that extends downward from the center of the lower surface of the support plate 64a and is erected on the vehicle frame 62. The support parts 64 contact and support the contact part 53c of the leg 53 with the upper surface of the support plate 64a.
[0023] The spacer 66, which serves as the height adjustment section 60, is a flat plate member that is detachably positioned between the leg portion 53 of the transfer conveyor 51 (conveyor frame 52) and the support portion 64 of the vehicle body 61 (vehicle body frame 62). The spacer 66 is formed in the shape of a rectangle with rounded corners in plan view and is the same size as the support plate 64a. The spacer 66 also has two pins 67 protruding from below on its lower surface. Figure 8 is an exploded perspective view showing the pins 67 of the spacer 66 and the insertion holes 65 of the support portion 64. As shown in the figure, the two pins 67 are inserted into the two insertion holes 65 formed in the support plate 64a of the support portion 64. This positions the spacer 66 relative to the support portion 64 (support plate 64a) in the front-rear, left-right, and right directions, fixing it in place so as not to shift position. The spacer 66 also has one through hole 68 that penetrates in the thickness direction (vertical direction), the reason for which will be explained later.
[0024] Next, the operation in the implementation system 10 in which the transport cart 50 transfers the magazine 30 to the storage device 40 (magazine storage section 42), which is the destination, will be described. First, the transport cart 50, loaded with the magazine 30 containing the feeder 20 to be supplied (due to work in a warehouse or the like, not shown), moves automatically by the automatic moving device 70 to the front of the empty magazine storage section 42 of the two magazine storage sections 42 of the storage device 40, which does not contain the magazine 30. Then, the transport cart 50 rotates each roller 54 of the transfer conveyor 51 in a predetermined direction (first direction), and the storage device 40 rotates each roller 46 of the magazine storage section 42 in a predetermined direction, thereby transferring the magazine 30 from the transfer conveyor 51 to the magazine storage section 42. Meanwhile, the empty transport cart 50, which does not contain the magazine 30, moves to the front of the magazine storage section 42 where the magazine 30 containing the feeder 20 to be collected is stored. Then, the transport cart 50 rotates each roller 54 of the transfer conveyor 51 in the opposite direction to the predetermined direction (second direction), and the storage device 40 rotates each roller 46 of the magazine storage section 42 in the opposite direction to the predetermined direction, thereby transferring the magazine 30 from the magazine storage section 42 to the transfer conveyor 51. The transport cart 50 then transports the transferred magazine 30 to a warehouse or the like by the automatic movement of the automatic moving device 70.
[0025] Here, Figure 9 is an explanatory diagram showing the height relationship between the storage device 40 and the transport trolley 50. In order to enable the proper transfer of the magazine 30 between the transport trolley 50 and the storage device 40, the difference between the height H1 of the peaks of the multiple rollers 54 on the transport trolley 50 and the height H2 of the peaks of the multiple rollers 46 on the storage device 40 must be within a predetermined range. On the other hand, there is variation in the floor height FL on which the mounting system 10 (storage device 40) is installed, depending on the location. The range of the dotted line in Figure 9(1) is an example of the range of variation in floor height FL. The lower dotted line in Figure 9(1) shows the floor height FL when the leveling bolts 48 are extended to compensate for a low floor height FL. The upper dotted line in Figure 9(1) shows the floor height FL when the leveling bolts 48 are shortened to compensate for a high floor height FL. Note that each device of the mounting system 10 is usually installed on a leveling sheet laid on the floor. Although the leveling sheets are not shown in the diagram, the area within the dotted line in Figure 9(1) is assumed to include leveling sheets of standard thickness. On the other hand, depending on the variation in floor height FL, leveling sheets with a different thickness from the standard thickness may be used.
[0026] For example, if the floor height FL is higher, a thinner leveling sheet is used instead of the standard thickness. The dashed line in Figure 9(2) shows the floor height FL when a thinner leveling sheet is used because the floor height FL is higher than the upper dotted line in Figure 9(1). Also, if the floor height FL is lower, a thicker leveling sheet is used instead of the standard thickness. The double dashed line in Figure 9(3) shows the floor height FL when a thicker leveling sheet is used because the floor height FL is lower than the lower dotted line in Figure 9(1). As a result, the range in which adjustments to variations in floor height FL are necessary is wider than that in Figure 9(1), that is, the range in Figure 9(4) enclosed by the dashed line in Figure 9(2) and the double dashed line in Figure 9(3). While not particularly limited, as a specific example, Figure 9(1) shows a case where the variation in floor height FL is in the range of 20 mm, such as -5 mm to +15 mm, with a thin leveling sheet being -10 mm thicker than the standard thickness and a thick leveling sheet being +10 mm thicker than the standard thickness. In that case, the required range in Figure 9(4) becomes a total range of 40 mm, by adding +10 mm and -10 mm for the leveling sheets to the upper and lower limits of the 20 mm range, respectively. That is, in order to smoothly transfer the magazine 30 between the transport trolley 50 and the storage device 40, it is necessary to accommodate such a required range (for example, 40 mm). Therefore, the transport trolley 50 of this embodiment is configured to accommodate such variations in floor height FL, and includes a configuration that allows the driving of the leading roller 54L of the transfer conveyor 51 and a configuration that allows the attachment and detachment of the spacer 66 as a height adjustment part 60.
[0027] First, the effect of configuring the transfer conveyor 51 to have a drivable leading roller 54L will be explained. Figures 10 and 11 are explanatory diagrams showing an example of how the magazine 30 is transferred. In Figures 10 and 11, the height H1 of the roller 54 of the transport trolley 50 is higher than the height H2 of the roller 46 of the storage device 40. Also, Figures 10A and 11A show the transport trolley 50 of this embodiment, and Figures 10B and 11B show the transport trolley 50B of a comparative example. The transport trolley 50B of the comparative example is configured so that the leading roller 54L is not driven. On the other hand, in the storage device 40, the leading roller 46L on the front side (towards the transport trolley 50) of the multiple rollers 46 is driven, and the two rollers 46 next to it are not driven. Also, in each figure, the rollers 46 and 54 that are not driven are shown in color, and the rollers 46 and 54 that are driven are shown in white.
[0028] When transferring the magazine 30 from the transport trolley 50 to the storage device 40 (in the direction of the arrow in Figure 10), in the comparative example shown in Figure 10B, the magazine 30 may straddle the non-driven leading roller 54L of the transport trolley 50B and the non-driven roller 46 of the storage device 40 during the transfer. In this state, the leading roller 46L spins freely, and the magazine 30 cannot be transported any further. In contrast, in the present embodiment shown in Figure 10A, by making the leading roller 54L drivable, the magazine 30 is prevented from straddling the two non-driven rollers 46 and 54, and can continue to be transported towards the storage device 40. Although not shown in the illustration, once the magazine 30 is removed from the leading roller 54L, it is placed horizontally on the roller 46 and transported by the drive of the leading roller 46L.
[0029] Furthermore, when transferring the magazine 30 from the storage device 40 to the transport trolley 50 (in the direction of the arrow in Figure 11), in the comparative example shown in Figure 11B, the magazine 30 may straddle the leading roller 46L and the non-driven leading roller 54L of the transport trolley 50B during the transfer. In this state, the magazine 30 must be transported to the transport trolley 50 side using only the driving of the leading roller 46L, which can cause slippage between the magazine 30 and the leading roller 46L, preventing proper transport. In contrast, in this embodiment shown in Figure 11A, by making the leading roller 54L drivable, the magazine 30 is transported to the transport trolley 50 side using two driven leading rollers 46L and 54L, thus preventing slippage between the magazine 30 and the leading roller and enabling proper transport. Note that in Figures 10 and 11, the height H1 of the roller 54 is shown to be higher than the height H2 of the roller 46, but the same can be said even when the height H1 of the roller 54 is lower than the height H2 of the roller 46. In this way, by making the leading roller 54L drivable, the magazine 30 can be transferred even if there is a difference of several tens of millimeters between the height H1 of the roller 54 and the height H2 of the roller 46. For example, by making the leading roller 54L drivable, approximately 30 mm of the required range of 40 mm in the specific example described above can be secured.
[0030] Next, the effect of making the spacer 66 detachable will be explained. Figure 12 is an explanatory diagram showing the spacer 66 in use, showing how the spacer 66 is installed between the transfer conveyor 51 and the vehicle body 61. Figure 13 is an explanatory diagram showing how the removed spacer 66 is stored, showing how the spacer 66, which has been removed from between the transfer conveyor 51 and the vehicle body 61, is stored. Note that Figures 12 and 13 only show the spacer 66 on the right front of the transport trolley 50, but the other three spacers 66 can be installed and removed and stored in the same way.
[0031] As shown in Figure 12, when the spacer 66 is installed, the height H1 of the roller 54 becomes H1_H, which is higher by the thickness T of the spacer 66. On the other hand, as shown in Figure 13, when the spacer 66 is removed, the height H1 of the roller 54 becomes H1_L, which is lower by the thickness T of the spacer 66. In this way, the height H1 of the roller 54 can be easily switched between two height positions, H1_H and H1_L, by attaching and detaching the spacer 66. Therefore, differences in the thickness of the leveling sheet can be easily accommodated by attaching and detaching the spacer 66. The thickness T of the spacer 66 can be appropriately determined to be the thickness required for height adjustment. For example, the thickness T of the spacer 66 can be set to 10 mm. In this case, about 30 mm of the required range of 40 mm in the specific example described above can be secured by making the leading roller 54L drivable, and the remaining 10 mm can be secured by attaching the spacer 66.
[0032] Furthermore, when shipping the transport trolley 50, the spacer 66 is installed between the transfer conveyor 51 and the vehicle body 61, and the worker can decide whether to use it as is or remove the spacer 66 at the site, i.e., the installation location of the mounting system 10. In other words, the worker should remove the spacer 66 if the height H2 of the storage device 40 is lower due to variations in the floor height FL. During the removal process, the worker can easily and safely attach and detach the spacer 66 by lifting the transfer conveyor 51 with the lift bolts 57 as described above.
[0033] Furthermore, as described above, the spacer 66 has a through hole 68 that penetrates in the thickness direction. This through hole 68 is formed to a diameter that allows the threaded portion of the mounting bolt 69 (see Figure 13) to pass through, but prevents the head of the mounting bolt 69 from passing through. Also, as shown in Figure 12, the transfer conveyor 51 has a screw hole 58 into which the threaded portion of the mounting bolt 69 is screwed. The screw hole 58 is formed on the mounting surface for attaching and storing the removed spacer 66. Therefore, the worker can attach the spacer 66, which has been removed from between the transfer conveyor 51 and the vehicle body 61, to the transfer conveyor 51 using the mounting bolt 69 for storage (see Figure 13).
[0034] Here, the correspondence between the main elements of this embodiment and the main elements of the present disclosure will be clarified. The magazine 30 of this embodiment corresponds to an example of a storage unit of the present disclosure, the transfer conveyor 51 corresponds to an example of a transfer conveyor, the vehicle body 61 corresponds to an example of a vehicle body, and the spacer 66 corresponds to an example of a height adjustment part (spacer). The set bolt 57 corresponds to an example of a set bolt. The pin 67 of the spacer 66 corresponds to an example of a convex part, and the insertion hole 65 of the support part 64 corresponds to an example of a concave part. The through hole 68 of the spacer 66 corresponds to an example of a through hole. The motor 55, pulley 55a, and belt 56 correspond to an example of a drive unit.
[0035] The transport trolley 50 of the embodiment described above is equipped with a height adjustment unit 60 that can adjust the height position of the transfer conveyor 51, so that it can appropriately respond to variations in the floor height FL on which the mounting system 10 is installed.
[0036] Furthermore, the transport trolley 50 includes a height adjustment section 60, which is a spacer 66 detachably positioned between the lower surface of the conveyor frame 52 (leg portion 53) of the transfer conveyor 51 and the upper surface of the support portion 64 of the vehicle body 61. Therefore, the height adjustment section 60 has a simple configuration, allowing the operator to easily adjust the height position of the transfer conveyor 51.
[0037] Furthermore, the transfer conveyor 51 is equipped with a retractable bolt 57 that screws into the conveyor frame 52 and extends toward the vehicle body 61 when tightened. Therefore, when attaching or detaching the spacer 66, the worker only needs to tighten the retractable bolt 57 to adjust the distance between the conveyor frame 52 and the support part 64 to be greater than or equal to the thickness T of the spacer 66. This makes it possible to easily and safely adjust the height position of the transfer conveyor 51.
[0038] Furthermore, the spacer 66 has a pin 67 formed on its lower surface, and the support portion 64 has an insertion hole 65 formed on its upper surface into which the pin 67 can engage. Therefore, by placing the spacer 66 on the support portion 64 so that the pin 67 engages with the insertion hole 65, the worker can easily position the spacer 66 and prevent misalignment. In other words, since there is no need to fix the spacer 66 with a dedicated fixing member, work efficiency can be improved.
[0039] Furthermore, the spacer 66 has a through hole 68 through which the threaded portion of the mounting bolt 69 can be inserted. The transfer conveyor 51 has a threaded hole 58 into which the threaded portion of the mounting bolt 69 is screwed, and the spacer 66 can be attached using the mounting bolt 69. Therefore, when the spacer 66 is not in use, it can be properly stored inside the transport trolley 50. Also, when installing the spacer 66, the worker does not need to go to another storage location to retrieve the spacer 66, so the installation work can be performed quickly.
[0040] Furthermore, the transport trolley 50 has a transfer conveyor 51 that can drive the leading roller 54L. Therefore, even if there is a slight difference in height between the height H1 of the roller 54 and the height H2 of the roller 46, the magazine 30 (storage unit) can be transferred appropriately. Thus, in this embodiment, the configuration that allows the leading roller 54L to be driven and the configuration that allows the spacer 66 to be attached and detached expands the range of tolerance for variations in floor height FL, so that the magazine 30 can be transferred more appropriately.
[0041] It goes without saying that this disclosure is not limited in any way to the embodiments described above, and can be implemented in various forms as long as they fall within the technical scope of this disclosure.
[0042] In the embodiment, the screw hole 58 for the mounting bolt 69 is formed in the transfer conveyor 51, but the present invention is not limited thereto, and the screw hole 58 may be formed in the vehicle body portion 61. Alternatively, such a screw hole may not be formed, and the spacer 66 may not be attached. That is, the removed spacer 66 may be stored outside the transport cart 50. In such a case, the through hole 68 does not need to be formed in the spacer 66.
[0043] In the embodiment, two columnar pins 67 are formed as convex portions on the lower surface of the spacer 66, and the same number of circular insertion holes 65 as the pins 67 are formed as concave portions on the upper surface of the support portion 64, but the present invention is not limited thereto. For example, the number of columnar convex portions is not limited to two, and may be three or more. Alternatively, the shape of the convex portion is not limited to a columnar shape, and may be another shape such as a prismatic shape. When the convex portion is prismatic, the orientation of the spacer 66 is also determined by the engagement between one convex portion and the concave portion, so it is sufficient that there is at least one convex portion. Further, a concave portion may be provided on the lower surface of the spacer 66, and a convex portion may be provided on the upper surface of the support portion 64. In such a case, a concave portion may also be provided on the lower surface of the leg portion 53 (abutting portion 53c) of the transfer conveyor 51. Alternatively, the present invention is not limited to an arrangement that positions the spacer 66 and prevents displacement thereof by means of the convex portions and the concave portions, and a dedicated fixing member for fixing the spacer 66 may be used without providing the convex portions and the concave portions. However, the arrangement according to the embodiment is preferable in consideration of workability.
[0044] In the embodiment, the jack-up bolt 57 is provided on the transfer conveyor 51, but the present invention is not limited thereto, and the jack-up bolt 57 may not be provided. However, the arrangement according to the embodiment is preferable in consideration of workability. Further, in the embodiment, all of the plurality of rollers 54 of the transfer conveyor 51 are configured to be drivable, but the present invention is not limited thereto, and it is sufficient that at least the leading roller 54L can be driven.
[0045] In this embodiment, the transport trolley 50 is equipped with a spacer 66 as a height adjustment section 60, but it is not limited to this, and any configuration is possible as long as the height position of the transfer conveyor 51 can be adjusted. Figure 14 is an overall external perspective view of a modified transport trolley 150. The modified transport trolley 150 is equipped with a height adjustment section 160 using a cam member 166 instead of the height adjustment section 60 of the embodiment. The height adjustment section 160 comprises a cam member 166, a cam follower 167, and a guide member 168, and is arranged on both the left and right sides of the transfer conveyor 51.
[0046] The cam members 166 are arranged in pairs on both the left and right sides of the transfer conveyor 51 and are triangular flat plate members having an inclined surface 166a extending in the front-rear direction. Each cam member 166 is configured to move individually in the front-rear direction on a rail 165 laid along the front-rear direction on the upper part of the vehicle frame 62, and to maintain its position. The cam followers 167 are arranged in pairs so as to be supported (fixed) to the outer surfaces of the left frame 52L and the right frame 52R of the conveyor frame 52 of the transfer conveyor 51. Each cam follower 167 is displaced vertically by rolling along the inclined surface 166a as the cam member 166 moves in the front-rear direction. The vertical displacement of the pair of left and right cam followers 167 raises and lowers the conveyor frame 52. The guide members 168 are cylindrical members positioned on the upper part of the vehicle frame 62 so as to penetrate through holes (not shown) formed in the left frame 52L and the right frame 52R of the conveyor frame 52. There are a total of four guide members 168, two on each side. Each guide member 168 guides the raising and lowering of the conveyor frame 52 (left frame 52L and right frame 52R). In other words, the guide members 168 guide the conveyor frame 52 so that it does not tilt when raising and lowering. The two guide members 168 on the left and the two guide members 168 on the right are connected at the top, ensuring rigidity and reliable guidance.
[0047] As described above, the transport cart 150 of the modified example includes a height adjustment unit 160 using a cam member 166. Therefore, an operator can adjust the height position of the transfer conveyor 51 by adjusting and holding the position of the cam member 166 in the front-rear direction. The height adjustment unit 60 of the embodiment adjusts the height position of the transfer conveyor 51 into two levels, high and low, depending on the presence or absence of the spacer 66. In contrast, the height adjustment unit 160 of the modified example can adjust the height position of the transfer conveyor 51 steplessly. In addition, by including the guide member 168, tilting of the conveyor frame 52 can be suppressed, and the conveyor frame 52 can be properly moved up and down while maintaining its horizontal state. Furthermore, also in the transport cart 150 of the modified example, the leading roller 54L of the transfer conveyor 51 can be driven. Therefore, similarly to the embodiment, the range of coping with variations in floor height FL can be expanded, so that the magazine 30 can be transferred more appropriately.
[0048] In the embodiment and the modified example (FIG. 14), a configuration is adopted in which both height adjustment of the transfer conveyor 51 by the height adjustment unit 60 (160) and driving of the leading roller 54L of the transfer conveyor 51 are enabled. However, the configuration is not limited thereto, and a configuration in which only one of them is enabled may be adopted. That is, in the embodiment and the modified example, as a configuration in which the belt 56 is not stretched around the leading roller 54L, the leading roller 54L does not need to be driven. Even in such a case, the height adjustment of the transfer conveyor 51 is enabled by the height adjustment unit 60 (160), thereby coping with variations in the floor height FL. Alternatively, the transport cart 50 (150) may not include the height adjustment unit 60 (160) and may be configured such that the leading roller 54L can be driven. That is, the transport cart 50 may cope with variations in the floor height FL by fixing the height of the transfer conveyor 51 and enabling the leading roller 54L to be driven.
[0049] Herein, the gist of the second transport trolley of the present disclosure is a transport trolley that transports a storage unit that houses members used in a mounting system including mounting-related equipment for performing component mounting processing, and delivers the storage unit at a destination, and comprises a plurality of rollers arranged in a row, a drive unit that drives at least the leading roller among the plurality of rollers which is the leading roller when the storage unit is delivered, a transfer conveyor that transfers the storage unit placed on the plurality of rollers to and from the destination, and a vehicle body that supports the transfer conveyor.
[0050] In the second transport trolley of this disclosure, at least the leading roller among the multiple rollers of the transfer conveyor is driven, so that it can appropriately respond to variations in the height of the floor surface on which the mounting system is installed.
[0051] This specification also discloses technical concepts that change the "transport trolley described in claim 2 or 3" in the original claim 5 to "transport trolley described in any one of claims 2 to 4," and technical concepts that change the "transport trolley described in claim 1 or 2" in the original claim 8 to "transport trolley described in any one of claims 1 to 7."
[0052] This disclosure is applicable to the technical field of transport trolleys.
[0053] 10 Assembly system, 11 Printing device, 12 Printing inspection device, 14 Assembly device, 15 Reflow device, 16 Assembly inspection device, 18 Loader, 20 Feeder, 21 Tape, 22 Tape reel, 23 Tape feeding mechanism, 25 Connector, 27 Rail, 30 Magazine, 31 Magazine body, 32 Slot, 35 Connector, 40 Storage device, 42 Magazine storage section, 44 Mounting platform, 46 Roller, 48 Leveling bolt, 50, 50B, 150 Transport trolley, 51 Transfer conveyor, 52 Conveyor frame, 52B Rear frame, 52L Left frame, 52R Right frame, 53 Leg section, 53a Fixing plate, 53b Rod, 53c Contact section, 54 Roller, 55 Motor, 55a Pulley, 56 Belt, 57 Set bolt, 58 Screw hole, 59 Engaging part, 61 Body part, 62 Body frame, 63 Caster, 64 Support part, 64a Support plate, 64b Column part, 66 Spacer, 67 Pin, 68 Through hole, 69 Mounting bolt, 70 Automatic moving device, 165 Rail, 166 Cam member, 166a Inclined surface, 167 Cam follower, 168 Guide member, P Part, S Circuit board.
Claims
1. A transport trolley for transporting a storage unit that houses components used in a mounting system including mounting-related equipment for performing component mounting processing, and for transferring the storage unit at a destination, comprising: a transfer conveyor having a plurality of rollers arranged in a row and a frame that rotatably supports the plurality of rollers, for transferring the storage unit placed on the plurality of rollers between the transfer conveyor and the destination; a vehicle body provided with a support part that supports the frame of the transfer conveyor; and a height adjustment part that can adjust the height position of the transfer conveyor.
2. The transport trolley according to claim 1, further comprising a spacer detachably disposed between the lower surface of the frame and the upper surface of the support as the height adjustment section.
3. The transport trolley according to claim 2, wherein the transfer conveyor is provided with a retractable bolt that allows the distance between the lower surface of the frame and the upper surface of the support to be adjusted to be greater than the thickness of the spacer by screwing the transfer conveyor into the frame and tightening it to extend toward the vehicle body.
4. The transport trolley according to claim 2 or 3, wherein the spacer has one of a protrusion and a recess into which the protrusion can engage formed on its lower surface, and the support has the other of the protrusion and recess formed on its upper surface.
5. The transport trolley according to claim 2 or 3, wherein the spacer has a through hole through which the threaded portion of the mounting bolt can be inserted, and either the transfer conveyor or the vehicle body has a threaded hole into which the threaded portion of the mounting bolt is screwed, and the spacer removed from between the frame and the support can be attached by the mounting bolt.
6. The transport trolley according to claim 1, further comprising, as the height adjustment section, a cam member having an inclined surface, and a cam follower connected to the frame and displaced vertically along the inclined surface as the cam member moves, thereby raising and lowering the frame.
7. The transport trolley according to claim 6, further comprising a guide member as the height adjustment section for guiding the raising and lowering of the frame due to the vertical displacement of the cam follower.
8. The transport trolley according to claim 1 or 2, wherein the transfer conveyor has a drive unit that drives at least the leading roller among the plurality of rollers that is the leading roller when transferring the storage unit.
9. A transport trolley for transporting a storage unit that houses components used in a mounting system including mounting-related equipment for performing component mounting processing, and for transferring the storage unit at a destination, comprising: a plurality of rollers arranged in a row; a drive unit that drives at least one of the plurality of rollers, which is the leading roller when transferring the storage unit; a transfer conveyor for transferring the storage unit placed on the plurality of rollers to and from the destination; and a vehicle body that supports the transfer conveyor.