Carrier tape transport device and tape feeder
The carrier tape transport device addresses malfunctions by using a frame and sprocket design with longer hidden pins and a foreign matter guiding mechanism to prevent obstruction and ensure reliable component supply.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2022-04-27
- Publication Date
- 2026-05-22
AI Technical Summary
Conventional carrier tape transport devices are prone to malfunctions due to foreign matter getting stuck between sprocket pins and the edge of the opening, causing components to fall into the tape feeder during substrate type changes, especially with small components.
The carrier tape transport device features a frame with a transport surface and sprockets having pins that protrude radially, with the hidden portion of the pins being longer than the protruding portion, and includes a foreign matter receiving and guiding mechanism to prevent foreign matter from obstructing the carrier tape transport.
This design reduces malfunctions by ensuring foreign matter falls below the transport surface, is captured, and is discharged effectively, preventing the carrier tape from being fed incorrectly.
Smart Images
Figure 0007863720000001 
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Abstract
Description
Technical Field
[0001] The present disclosure relates to a carrier tape conveying device for conveying a carrier tape storing components and a tape feeder including the same.
Background Art
[0002] Conventionally, in a component mounting device that takes out components stored in a carrier tape with a mounting head and mounts them on a substrate, a tape feeder that supplies components to a component supply position by the mounting head is known. This tape feeder incorporates a carrier tape conveying device for conveying the carrier tape. A plurality of tape feeders are prepared for each type of component to be mounted on the substrate, and these are arranged and used adjacent to each other.
[0003] When the type of substrate to be produced is changed, work is performed to replace unnecessary tape feeders. The sizes of components handled by the component mounting device vary greatly, and there are minute components as small as 0.4 mm × 0.2 mm or less. An opening is formed in the conveying surface for conveying the carrier tape, and pins of a sprocket of the carrier tape conveying device protrude from this opening. Therefore, there are cases where components scattered from the carrier tape during the replacement work fall into the tape feeder through the opening, and there is a known structure assuming such troubles (Patent Document 1).
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0005] In the structure of Patent Document 1, the opening is large, making it easy for parts to fall into the tape feeder. Therefore, it is conceivable to reduce the size of the opening to a size that does not interfere with the rotation of the sprocket pins. However, if the size of the opening is reduced, a problem may occur where foreign objects stuck between the sprocket pins get caught between the pins and the edge of the opening, stopping the rotation of the sprocket.
[0006] Therefore, the purpose of this disclosure is to provide a carrier tape transport device and a tape feeder equipped therewith that reduce malfunctions caused by foreign matter, in order to solve the above-mentioned conventional problems. [Means for solving the problem]
[0007] The carrier tape transport device of this disclosure transports a carrier tape that houses components and has feed holes provided at a predetermined pitch. The carrier tape transport device comprises a frame having a transport surface that supports and guides the transported carrier tape from below, and a sprocket having a plurality of pins that protrude radially in accordance with the pitch of the feed holes, and transporting the carrier tape by engaging the pins with the feed holes as the sprocket rotates while the pins protrude upward from openings formed in the transport surface. The length of the portion of the pins hidden below the transport surface is longer than the length of the portion of the pins that protrudes from the transport surface.
[0008] The tape feeder of this disclosure is a tape feeder that transports a carrier tape having feed holes at a predetermined pitch and supplies components stored on the carrier tape to a component supply position. The tape feeder is equipped with the carrier tape transport device described above, and the carrier tape transport device transports the carrier tape and supplies components to the component supply position. [Effects of the Invention]
[0009] According to this disclosure, it is possible to provide a parts transport device that reduces defects caused by foreign matter, and a tape feeder equipped therewith. [Brief explanation of the drawing]
[0010] [Figure 1] Schematic diagram of a component mounting device according to one embodiment of the present disclosure. [Figure 2] Schematic diagram of a tape feeder according to one embodiment of the present disclosure [Figure 3] Partial plan view of the area around the component supply position of the tape feeder. [Figure 4] An explanatory diagram showing a schematic cross-section in line with arrow V in Figure 2. [Figure 5] Schematic perspective view of the carrier tape [Figure 6] Partial enlarged perspective view of the carrier tape transport device. [Figure 7] YZ plan view of the carrier tape transport device [Figure 8] Longitudinal cross-sectional view of the carrier tape transport device in the XZ plane. [Figure 9] Side view of a sprocket [Modes for carrying out the invention]
[0011] According to a first aspect of this disclosure, a carrier tape transport device transports a carrier tape that houses components and has feed holes at a predetermined pitch. The carrier tape transport device includes a frame having a transport surface that supports and guides the transported carrier tape from below, and a sprocket having a plurality of pins that protrude radially in accordance with the pitch of the feed holes, and which transports the carrier tape by engaging the pins with the feed holes as it rotates while the pins protrude upward from openings formed in the transport surface. The length of the portion of the pins hidden below the transport surface is longer than the length of the portion of the pins that protrudes from the transport surface.
[0012] According to the carrier tape transport device of the first embodiment, even if foreign matter enters the interior through the opening and remains between the pins of the sprocket, the length of the part of the pin hidden below the transport surface is longer than the length of the part of the pin that protrudes from the transport surface, so the foreign matter is more likely to fall below the transport surface. This reduces problems such as foreign matter getting stuck between the pin and the edge of the opening, preventing the carrier tape from being transported.
[0013] According to a second aspect of the present disclosure, there is provided the component transfer device according to the first aspect, wherein the total length of the pins is longer than the pin pitch which is the distance between the root portions of adjacent pins. As a result, foreign matter is more likely to fall to below the transfer surface, and it is possible to reduce problems such as being sandwiched between the pins and the edge of the opening and preventing the carrier tape from being fed.
[0014] According to a third aspect of the present disclosure, there is provided the component transfer device according to the first or second aspect, which has a foreign matter receiving portion below the sprocket for receiving foreign matter remaining on the surface that enters from the opening and is sandwiched between the pins of the sprocket as the sprocket rotates and falls. The foreign matter receiving portion can prevent foreign matter from moving to an unexpected location inside the carrier tape transfer device.
[0015] According to a fourth aspect of the present disclosure, there is provided the component transfer device according to any one of the first to third aspects, which has a foreign matter guide portion for guiding foreign matter to the discharge portion. As a result, foreign matter that has entered the carrier tape transfer device can be reliably discharged.
[0016] According to a fifth aspect of the present disclosure, there is provided the component transfer device according to the fourth aspect, wherein the foreign matter guide portion is provided with a downward concave portion, and a pocket for collecting foreign matter that has fallen into the foreign matter guide portion is formed. As a result, it is possible to suppress foreign matter that has entered the carrier tape transfer device from freely moving inside the device.
[0017] According to a sixth aspect of the present disclosure, there is provided the component transfer device according to the fifth aspect, wherein the discharge portion is disposed at a portion where the pocket is located. As a result, foreign matter that has entered the carrier tape transfer device can be reliably discharged.
[0018] According to a seventh aspect of the present disclosure, there is provided a tape feeder that conveys a carrier tape provided with feed holes at a predetermined pitch and supplies components stored in the carrier tape to a component supply position, the tape feeder including the carrier tape conveying device according to any one of the first to sixth aspects, and conveying the carrier tape by the carrier tape conveying device to supply components to the component supply position. This makes it possible to realize a tape feeder that reduces problems caused by foreign matter.
[0019] Hereinafter, exemplary embodiments of a component mounting apparatus according to the present disclosure will be described with reference to the accompanying drawings. The present disclosure is not limited to the specific configurations of the following embodiments, and configurations based on the same technical idea are included in the present disclosure.
[0020] (Embodiment) The configuration of a component mounting apparatus 1 according to an embodiment of the present disclosure will be described with reference to FIG. 1. FIG. 1 is a schematic diagram of the component mounting apparatus 1. In FIG. 1, as two axial directions orthogonal to each other in the horizontal plane, an X direction (the direction perpendicular to the paper surface in FIG. 1) in the substrate conveyance direction and a Y direction (the left-right direction in FIG. 1) orthogonal to the substrate conveyance direction are shown. Further, a Z direction (the vertical direction and the longitudinal direction in FIG. 1) is shown as the height direction orthogonal to the horizontal plane. The radial direction indicates the radial direction of the rotation axis, and the thrust direction indicates the axial direction of the rotation axis.
[0021] The component mounting apparatus 1 manufactures a mounted substrate on which components are mounted on a substrate. A substrate conveyance mechanism 2 provided on the upper surface of a base 1a conveys, positions, and holds a substrate 3 in the X direction. Above the substrate conveyance mechanism 2, a mounting head 4 that moves in the horizontal directions (X direction, Y direction) by a head movement mechanism (not shown) is installed. On the upper part of a carriage 5 coupled to the base 1a on the side of the substrate conveyance mechanism 2, a plurality of tape feeders 6 are attached side by side in the X direction. The tape feeder 6 is a component supply device that supplies components to the component mounting apparatus 1.
[0022] On the front side of the trolley 5 and below the tape feeder 6, a reel holder 9 is installed that rotatably supports a reel 8 around which a carrier tape 7 containing parts to be supplied to the parts loading device 1 is wound. The tape feeder 6 transports the carrier tape 7 stored on the reel 8 in the tape feeding direction and supplies parts to the parts supply position P1 by the loading head 4.
[0023] The component mounting device 1 includes a mounting control unit 10 that controls a substrate transport mechanism 2, a mounting head 4, and a head movement mechanism. The mounting control unit 10 transmits a component supply command to the unit control unit 17 of the tape feeder 6, and controls the mounting head 4 and the head movement mechanism to retrieve the components supplied by the tape feeder 6 to the component supply position P1 by the mounting head 4, and to transfer and mount them to the mounting point on the substrate 3 held by the substrate transport mechanism 2. In this way, the tape feeder 6 is a tape feeder that supplies components stored on a carrier tape 7 to the component mounting device 1. The components stored on the carrier tape 7 are, for example, chip-type electronic components. Above the base 1a and the trolley 5, there is an openable and closable main body cover 11 that covers the movable mechanisms such as the mounting head 4 during operation to prevent the operator from touching them.
[0024] The mounting control unit 10 includes a storage unit. The mounting control unit 10 is composed of, for example, a processor or FPGA or other circuitry and memory or an SSD or the like.
[0025] In Figure 1, a collection box 12 is installed at the bottom of the trolley 5 to collect the empty carrier tape 7 that is discharged from the rear of the tape feeder 6 after the components have been removed by the mounted head 4. A discharge chute 13 is installed on the rear side of the trolley 5 to guide the empty carrier tape 7 discharged from the tape feeder 6 to the collection box 12. The discharge chute 13 is equipped with a cutting section 14 that cuts the empty carrier tape 7 to a predetermined length. The empty carrier tape 7 discharged from the tape feeder 6 is cut by the cutting section 14 and collected in the collection box 12.
[0026] Tape feeder Next, the configuration of the tape feeder 6 will be described with reference to Figures 2 to 4. Figure 2 is a schematic diagram of the tape feeder 6 according to the embodiment. Figure 3 is a partial plan view of the area around the component supply position P1 of the tape feeder 6. Figure 4 is an explanatory diagram showing a schematic cross-section in the direction of arrow V in Figure 2.
[0027] The tape feeder 6 comprises a tape transport path 20, an exposed section 80, and a carrier tape transport device 21 inside the main body 60. The tape transport path 20 includes an insertion port 20a into which the carrier tape 7 is fed and an outlet port 20b into which the carrier tape 7 is discharged. The main body 60 of the tape feeder 6 is composed of multiple members, including a base 61, a main frame 62, and a sub-frame 63. The base 61 is the part fixed to the trolley 5, and the main frame 62 and sub-frame 63 are fixed parallel to it. The main frame 62 and sub-frame 63 are plate-shaped members with a vertically elongated cross-section when viewed from the Y direction (see Figure 4), and the tape transport path 20 is formed in the space between the main frame 62 and sub-frame 63. The main frame 62 is the frame that constitutes the carrier tape transport device 21 that transports the carrier tape 7 along the tape transport path 20, and multiple first to third sprockets 26, 28, 30 and a motor 25 for driving them are assembled to it.
[0028] The tape transport path 20 guides the carrier tape 7, which has been inserted into the tape transport path 20 from the insertion port 20a, to the component supply position P1, and further to the discharge port 20b. The exposed portion 80 peels the top tape 7b of the carrier tape 7 (see Figure 5) from the carrier tape 7 to expose the component 16 that is packaged on the carrier tape 7. In this embodiment, the exposed portion 80 employs a method of peeling the top tape 7b from the carrier tape 7, but it is also possible to expose the component 16 by cutting open the top tape 7b with a cutter or the like.
[0029] The insertion port 20a opens on the upstream side (left side in Figure 2) in the tape feeding direction of the tape transport path 20. The discharge port 20b opens on the downstream side (right side in Figure 2) in the tape feeding direction. The tape transport path 20 is connected from the insertion port 20a to the discharge port 20b. The tape transport path 20 has an open section from the second sprocket 28 to the third sprocket 30 that is open upwards. The main body 60 is fitted with a tape cover 90 that covers the upper part of this open section. As shown in Figure 3, the tape cover 90 is positioned to straddle the upper part of the main frame 62 and the upper part of the sub-frame 63, and a component removal port 90a is formed at a position corresponding to the component supply position P1. The upper outer surface of the main frame 62 has a cover mounting portion 62k on which the tape cover 90 is attached. The cover mounting portion 62k is, for example, a recess or a stepped shape.
[0030] Furthermore, an opening 622 is provided in the main frame 62 within this open section for the pin 28a of the second sprocket 28 to be exposed (see Figure 6). The pin 28a exposed through the opening 622 engages with the feed hole 7d of the carrier tape 7, and the carrier tape 7 is positioned as the second sprocket 28 rotates. The second sprocket 28 causes the carrier tape 7 to travel along the transport surface 62g below the tape cover 90, and the parts 16 contained in the pockets 7c of the carrier tape 7 are transported to the parts supply position P1.
[0031] The mounted head 4 removes the components 16 stored in the carrier tape 7 from the components outlet 90a. The tape cover 90 has relief holes 90b and 90c formed in it to avoid interference with the second sprocket 28 and the third sprocket 30.
[0032] Carrier Tape Next, the carrier tape 7 will be described in detail with reference to Figure 5. Figure 5 is a schematic perspective view of the carrier tape 7.
[0033] The carrier tape 7 has a base tape 7a and a top tape 7b. The base tape 7a has storage compartments 7e formed in a row along its longitudinal direction at equal intervals by embossing. Inside these storage compartments 7e, there are pockets 7c that open upwards, and each pocket 7c stores a component 16. The top tape 7b is attached to the upper surface of the base tape 7a and encloses the components 16 in the pockets 7c. Multiple feed holes 7d are arranged in a row parallel to the row of pockets 7c on the base tape 7a at equal intervals Pt1. The depth Hb of the pockets 7c that store the components 16 is sized according to the dimensions of the components to be stored. The width Wa of the carrier tape 7 is also selected to be an appropriate size according to the dimensions of the components.
[0034] Carrier tape transport device Next, the carrier tape transport device 21 will be described with reference to Figures 2 and 7. Figure 7 is a YZ plan view of the carrier tape transport device 21.
[0035] The carrier tape transport device 21 transports the carrier tape 7 to the component supply position P1 on the downstream side of the tape transport path 20. The carrier tape transport device 21 comprises a main frame 62, at least one sprocket, a motor 25, and a plurality of drive gears that transmit power from the motor 25 to the sprockets to rotate them. The carrier tape transport device 21 in this embodiment comprises three sprockets: a first sprocket 26, a second sprocket 28, and a third sprocket 30.
[0036] The first sprocket 26 is mounted on the main frame 62 in a manner that allows it to rotate around a horizontal axis of rotation parallel to the X direction. The second sprocket 28 is mounted on the main frame 62 in a manner that allows it to rotate around a horizontal axis of rotation J (see Figure 4) parallel to the X direction. The third sprocket 30 is mounted on the main frame 62 in a manner that allows it to rotate around a horizontal axis of rotation parallel to the X direction.
[0037] The carrier tape transport device 21 further includes a plurality of drive gears that transmit the driving force of the motor 25, and the output of the motor 25 is transmitted to the first sprocket 26, the second sprocket 28, and the third sprocket 30, respectively, via these plurality of gears.
[0038] Next, with reference to Figure 8, the main frame 62 of the carrier tape transport device 21 will be described. Figure 8 is a longitudinal cross-sectional view of the carrier tape transport device 21 in the XZ plane.
[0039] As shown in Figure 8, the main frame 62 has a first surface 62L and a second surface 62R as sides that extend vertically and horizontally (parallel to the YZ plane) along the transport direction of the carrier tape 7 by the tape transport path 20. The main frame 62 is a plate-like member with a small thickness dimension T sandwiched between the first surface 62L and the second surface 62R. For this reason, the cross-section of the main frame 62 perpendicular to the transport direction of the carrier tape 7 (XZ cross-section) is elongated vertically.
[0040] The main frame 62 has a flat transport surface 62g formed at its top for guiding the carrier tape 7 along the tape transport path 20. The transport surface 62g has multiple openings through which the pins of each sprocket protrude. For example, at opening 622, the pin 28a of the second sprocket 28 protrudes beyond the transport surface 62g. Further downstream at opening 623, the pin 30a of the third sprocket 30 protrudes beyond the transport surface 62g.
[0041] These pins 28a and 30a are inserted into the feed holes 7d of the carrier tape 7 located on the transport surface 62g. Therefore, as the first to third sprockets 26, 28, and 30 rotate, the carrier tape 7 is fed to the pins of each sprocket and moves along the transport surface 62g. Below the first to third sprockets 26, 28, and 30, there is a foreign matter receiving section 59 that guides foreign matter that has entered between the pins of each sprocket to the foreign matter discharge hole 62h and the foreign matter discharge port 62m.
[0042] Next, with reference to Figures 7 and 8, the retrieval of foreign matter 93 that has fallen between the pins 28a will be described. The foreign matter 93 may be, for example, dust or parts 16 that have been scattered from the carrier tape 7 during the replacement of the tape feeder 6.
[0043] The foreign object receiving section 59 receives foreign objects 93 that enter through each opening, get caught between the pins of each sprocket, and remain on the sprocket surface, falling down as the sprocket rotates. For example, inside the main frame 62, the second sprocket 28 has the tip of its pin 28a surrounded by the foreign object receiving section 59. The foreign object receiving section 59 is located between the main frame 62 and the inner cover 38.
[0044] The foreign object receiving section 59 has a first foreign object guide section 59b and a second foreign object guide section 59c, which guide foreign objects 93 to a foreign object discharge hole 62h and a foreign object discharge port 62m, respectively. The first foreign object guide section 59b guides, for example, foreign objects 93 that have entered the main frame 62 as the second sprocket 28 rotates to a pocket 59a located below the second sprocket 28. The first foreign object guide section 59b is part of the upper surface of the foreign object receiving section 59 and is formed along a circle connecting the tips of the respective pins 28a of the second sprocket 28.
[0045] Pocket 59a is a recessed area that extends downward from the first foreign object guide portion 59b and is connected to a foreign object discharge hole 62h formed in the main frame 62 that communicates with the outside. Foreign objects 93 that fall between the pins 28a rotate with the second sprocket 28, fall into the first foreign object guide portion 59b, and are collected in pocket 59a. The foreign object discharge hole 62h is located in the area where pocket 59a is situated, for example, below pocket 59a. An operator can retrieve the foreign objects 93 collected in pocket 59a through the foreign object discharge hole 62h.
[0046] Below the third sprocket 30, a second foreign object guide section 59c is formed by a foreign object receiving section 59. The second foreign object guide section 59c guides foreign objects 93 that fall into the main frame 62 as the third sprocket 30 rotates to the foreign object discharge port 62m. The second foreign object guide section 59c is part of the upper surface of the foreign object receiving section 59 and is inclined downward. Foreign objects 93 that fall from the third sprocket 30 into the second foreign object guide section 59c move along the second foreign object guide section 59c by their own weight and are discharged to the outside of the main frame 62 through the foreign object discharge port 62m.
[0047] Next, with reference to Figure 9, the length of the sprocket pins will be explained. Figure 9 is a partial side view of a sprocket. Here, the length of the pin 28a of the second sprocket 28 will be explained, but the pins of the first sprocket 26 and the pin 30a of the third sprocket 30 may have a similar configuration.
[0048] The upper part of the pin 28a of the second sprocket 28 protrudes above the conveying surface 62g of the carrier tape 7. The length Lp1 of the part of the pin 28a that protrudes above the conveying surface 62g of the carrier tape 7 is less than the length Lp2 of the part that does not protrude above the conveying surface 62g. In other words, the length Lp1 of the pin 28a of the second sprocket 28 that protrudes above the conveying surface 62g of the carrier tape 7 is less than the length Lp2 of the pin base 28d of the second sprocket 28 to the conveying surface 62g of the carrier tape 7. As a result, even if foreign matter 93 falls between the two pins 28a, the length Lp2 of the pin 28a is longer, so the foreign matter 93 is less likely to penetrate below the conveying surface 62g and get stuck between the edge of the opening 622 and the pin 28a.
[0049] Furthermore, the total length Lp3 of the pin 28a of the second sprocket 28 is greater than the maximum dimension of part 16. In other words, Lp3, which is also the difference between the radius Rt to the pin tip 28e of the second sprocket 28 and the radius Rb to the pin base 28d of the second sprocket 28, is greater than the maximum dimension of part 16. This reduces the likelihood of part 16 getting stuck between the edge of the opening 622 and the pin 28a, even if it falls between the two pins 28a as foreign matter 93.
[0050] Furthermore, the total length Lp3 of the pins 28a of the second sprocket 28 is longer than the inter-pin distance Dp, which is the distance between the bases of adjacent pins 28a. This makes it possible to better avoid problems such as foreign matter 93 getting stuck between the pins 28a and the edge of the opening 622, preventing the carrier tape 7 from being fed, even if foreign matter 93 enters the opening 622 and remains between the pins 28a of the second sprocket 28. In addition, the ability to capture foreign matter 93 between the pins 28a of the second sprocket 28 is improved, reducing the possibility of it getting lost inside the carrier tape transport device 21.
[0051] The carrier tape transport device 21 of this embodiment transports a carrier tape 7 that houses components 16 and has feed holes 7d at a predetermined pitch Pt1. The carrier tape transport device 21 comprises a main frame 62 and a second sprocket 28. The main frame 62 has a transport surface 62g that supports and guides the transported carrier tape 7 from below. The second sprocket 28 has a plurality of pins 28a that protrude radially in accordance with the pitch Pt1 of the feed holes 7d, and transports the carrier tape 7 by rotating while the pins 28a protrude upward from an opening 622 formed in the transport surface 62g and engaging the pins 28a with the feed holes 7d. The length Lp2 of the portion of the pins 28a hidden below the transport surface 62g is longer than the length LP1 of the portion of the pins 28a that protrudes from the transport surface 62g.
[0052] Even if foreign matter 93 enters the interior through the opening 622 and remains between the pins 28a of the second sprocket 28, the length of the pins 28a Lp2 is longer than the length Lp1, so the foreign matter 93 is likely to fall below the transport surface. This prevents problems such as the foreign matter 93 getting stuck between the pins 28a and the edge of the opening 622, which would prevent the carrier tape 7 from being fed.
[0053] Furthermore, in the carrier tape transport device 21 of this embodiment, the total length Lp3 of the pins 28a is longer than the inter-pin distance Dp, which is the distance between the root portions of adjacent pins 28a. This further reduces the likelihood of foreign matter 93 getting stuck between the pins 28a and the edge of the opening 622. In addition, the ability to capture foreign matter 93 between the pins 28a of the second sprocket 28 is improved, reducing the possibility of foreign matter 93 going missing inside the carrier tape transport device 21.
[0054] Furthermore, in the carrier tape transport device 21 of this embodiment, below the second sprocket 28, there is a foreign object receiving section 59 that receives foreign objects 93 that enter through the opening 622 and remain on the surface of the second sprocket 28, which are caught between the pins 28a of the second sprocket 28, as they fall down as the second sprocket 28 rotates.
[0055] In the structure of Patent Document 1, there was a risk that foreign objects such as parts that had fallen into the tape feeder could move freely in the gaps inside the tape feeder, and that the lost foreign objects could cause malfunctions. In the carrier tape transport device 21 of this embodiment, the foreign object receiving section 59 prevents the foreign object 93 from moving to an unexpected location inside the carrier tape transport device 21.
[0056] Furthermore, the carrier tape transport device 21 of this embodiment has a foreign object receiving section 59 which has first and second foreign object guide sections 59b and 59c that guide foreign objects 93 to the foreign object discharge hole 62h and the foreign object discharge port 62m. In Patent Document 1, it was complicated to remove foreign objects that had entered the inside of the tape feeder to the outside of the tape feeder, but with the first and second foreign object guide sections 59b and 59c, foreign objects 93 that have entered the inside of the carrier tape transport device 21 can be discharged reliably and easily.
[0057] Furthermore, in the carrier tape transport device 21 of this embodiment, the first foreign object guide portion 59b is provided with a recessed portion at the bottom, and a pocket 59a is formed to collect foreign objects 93 that have fallen into the first foreign object guide portion 59b. This further suppresses the free movement of foreign objects 93 that have entered the inside of the carrier tape transport device 21.
[0058] Furthermore, in the carrier tape transport device 21 of this embodiment, the foreign matter discharge hole 62h is located in the same area as the pocket 59a. This ensures that any foreign matter 93 that enters the interior of the carrier tape transport device 21 is reliably discharged.
[0059] Furthermore, the tape feeder 6 of this embodiment transports a carrier tape 7 having feed holes 7d at a predetermined pitch Pt1 and supplies the components 16 stored on the carrier tape 7 to the component supply position P1. The tape feeder 6 is equipped with the carrier tape transport device 21 described above, and the carrier tape transport device 21 transports the carrier tape 7 and supplies the components 16 to the component supply position P1.
[0060] The tape feeder 6, by being equipped with a carrier tape transport device 21, can similarly reduce malfunctions caused by foreign matter.
[0061] While this disclosure is adequately described in relation to preferred embodiments with reference to the accompanying drawings, various variations and modifications will be obvious to those skilled in the art. Such variations and modifications should be understood as being included within the scope of this disclosure as defined by the attached claims. Furthermore, variations in combinations and sequences of elements in each embodiment can be realized without departing from the scope and spirit of this disclosure.
[0062] In the above embodiment, the second sprocket 28 is described in which the length Lp2 of the portion hidden below the conveying surface 62g is longer than the length Lp1 of the portion of the pin 28a protruding from the conveying surface 62g, but the embodiment is not limited to this. The first sprocket 26 and the third sprocket 30 can also be configured in the same way as the second sprocket 28.
[0063] Furthermore, by appropriately combining any embodiment or modification from the various embodiments and modifications described above, the effects of each can be achieved. [Industrial applicability]
[0064] The parts transport device described herein is applicable to a parts transport device that transports parts toward a parts supply position and a tape feeder equipped therewith. [Explanation of Symbols]
[0065] 1. Component mounting device 1a Base 2. Substrate transport mechanism 3 circuit boards 4. Mounted Head 5 carts 6 Tape feeders 7 Carrier Tape 7a Base Tape 7b Top Tape 7c pocket 7d feed hole 7e storage compartment 8 reels 9 Reel holding section 10 Mounted Control Unit 11 Main unit cover 12 collection boxes 13 Discharge Chute 14 Cut section 15. Reader device 16 parts 17 Unit Control Unit 20 Tape transport path 20a Insertion port 20b Outlet 21 Carrier tape transport device 25 Motor 26. First sprocket 28. Second sprocket 28a pin 28d Pin bottom 28e pin tip 30 Third sprocket 30a pin 38 Inner cover 59 Foreign object receiving section 59a Pocket 59b First foreign object guide section 59c Second foreign object guide section 60 Main body 61 Base 62 Main Frame 62g Conveyor surface 62h Foreign matter discharge hole 62k cover mounting area 62m Foreign matter outlet 62L 1st page 62R Page 2 63 Subframe 80 Exposed part 90 Tape Covers 90a Parts outlet 90b, 90c Escape Hole 93 Foreign matter 622, 623 Opening Hb depth J rotation axis P1 Part supply location Pt1 Pitch
Claims
1. A carrier tape transport device that stores components and transports a carrier tape having feed holes at a predetermined pitch, A frame having a transport surface that supports and guides the transported carrier tape from below, The sprocket has a plurality of pins that protrude radially in accordance with the pitch of the feed holes, and the sprocket is used to transport the carrier tape by rotating the pins while they protrude upward from an opening formed in the transport surface, thereby engaging the pins with the feed holes. The length of the portion of the pin that is hidden below the conveying surface is longer than the length of the portion of the pin that protrudes most from the conveying surface, Carrier tape transport device.
2. The total length of the pin is longer than the distance between adjacent pins, which is the distance between the base portions of the pins. The carrier tape transport device according to claim 1.
3. Below the sprocket, there is a foreign object receiving portion that receives foreign objects that enter through the opening and remain on the surface of the sprocket, pinned between the pins, as the sprocket rotates. The carrier tape transport device according to claim 1.
4. The foreign object receiving section has a foreign object guide section that guides the foreign object to the discharge section. The carrier tape transport device according to claim 3.
5. The foreign object guide portion is provided with a recessed portion at the bottom, and a pocket is formed in the foreign object guide portion to collect foreign objects that have fallen into it. The carrier tape transport device according to claim 4.
6. The discharge section is located in the portion where the pocket is situated. The carrier tape transport device according to claim 5.
7. A tape feeder that transports a carrier tape having feed holes at a predetermined pitch and supplies components stored on the carrier tape to a component supply position, A carrier tape transport device according to any one of claims 1 to 6, The carrier tape transport device transports the carrier tape and supplies the parts to the parts supply position. Tape feeder.