CN116963487A - Carrier tape conveying device and tape feeder - Google Patents

Abstract

The present invention provides a carrier tape conveying device that reduces defects caused by foreign matter and a tape feeder provided with the carrier tape conveying device. The carrier tape conveying device conveys a carrier tape that accommodates components and is provided with feed holes at predetermined intervals. The carrier tape conveying device includes: a frame having a conveying surface that supports and guides the conveyed carrier tape from below; and a sprocket having a plurality of pins that radially protrude corresponding to the distance between the feed holes. The pin is rotated while protruding upward from the opening formed in the conveyance surface to engage the pin with the feed hole, thereby conveying the carrier tape. The length of the portion of the pin hidden below the conveying surface is longer than the length of the portion of the pin protruding from the conveying surface.

Description

Carrier tape conveyor and tape feeder

Technical field

The present disclosure relates to a carrier tape conveyance device for conveying a carrier tape for storing components, and a tape feeder provided with the carrier tape conveyance device.

Background technique

Conventionally, in component mounting devices that use a mounting head to pick out components stored in a carrier tape and mount the components on a substrate, a tape feeder is known that supplies components to a component supply position where the mounting head picks up the components. This tape feeder is equipped with a carrier tape conveying device that conveys the carrier tape. The component mounting device prepares a plurality of tape feeders according to the types of components to be mounted on the substrate, arranges them adjacent to each other, and uses them.

Furthermore, when the type of substrate produced is changed, unnecessary tape feeders are replaced. The sizes of the parts operated by the part loading device vary, and the smaller ones include tiny parts of 0.4mm × 0.2mm or less. An opening is formed on a conveying surface for conveying the carrier tape, and a pin of the sprocket of the carrier tape conveying device protrudes from the opening. Therefore, parts scattered from the carrier tape may fall into the tape feeder from the opening during the replacement operation, and a tape feeder having a structure considering such a failure is known (Patent Document 1).

Prior technical documents

patent documents

Patent Document 1: Japanese Patent Application Publication No. 2014-67848

Contents of the invention

Invent the problem to be solved

In the structure of Patent Document 1, since the size of the opening is large, components easily fall into the tape feeder. Therefore, it is considered to reduce the size of the opening to a size that does not interfere with the rotation of the pin of the sprocket. However, if the size of the opening is reduced, a foreign matter sandwiched between the pins of the sprocket may become stuck between the pins and the edge of the opening, causing the sprocket to stop rotating.

Therefore, an object of this disclosure is to solve the above-mentioned conventional problems and provide a carrier tape conveying device that reduces defects caused by foreign matter and a tape feeder provided with the carrier tape conveying device.

Solutions for solving problems

The carrier tape conveying device of the present disclosure conveys a carrier tape that accommodates components and is provided with feed holes at predetermined intervals. The carrier tape conveying device includes: a frame having a conveying surface that supports and guides the conveyed carrier tape from below; and a sprocket having a plurality of pins that radially protrude corresponding to the distance between the feed holes. The carrier tape is conveyed by protruding upward from the opening formed in the conveyance surface and rotating so as to engage the pin with the feed hole. The length of the portion of the pin hidden below the conveying surface is longer than the length of the portion of the pin protruding from the conveying surface.

The tape feeder of this disclosure is a tape feeder that conveys a carrier tape provided with feed holes at predetermined intervals and supplies components accommodated in the carrier tape to a component supply position. The tape feeder includes the above-mentioned carrier tape conveying device, and the carrier tape conveying device conveys the carrier tape to supply the components to the component supply position.

Invention effect

According to the present disclosure, it is possible to provide a parts conveyance device that reduces defects caused by foreign matter and a tape feeder provided with the parts conveyance device.

Description of the drawings

FIG. 1 is a schematic diagram of a component mounting device according to an embodiment of the present disclosure.

FIG. 2 is a schematic diagram of a tape feeder according to an embodiment of the present disclosure.

FIG. 3 is a partial plan view of the vicinity of the parts supply position of the belt feeder.

FIG. 4 is an explanatory diagram showing a schematic cross-section taken along line V in FIG. 2 .

Fig. 5 is a schematic perspective view of the carrier tape.

FIG. 6 is a partially enlarged perspective view of the carrier tape conveying device.

Fig. 7 is a YZ plan view of the carrier tape conveying device.

Fig. 8 is a longitudinal cross-sectional view of the carrier tape conveying device in the XZ plane.

Figure 9 is a partial side view of the sprocket.

Explanation of reference symbols:

1 component mounting device

1a abutment

2 Substrate conveying mechanism

3 substrate

4 mounting head

5 trolleys

6 with feeder

7 carrier tape

7a baseband

7b top strap

7c groove

7d feed hole

7e Storage Department

8 reels

9 Reel holding part

10 Onboard control unit

11 Main body cover

12 recycling bins

13 Discharge chute

14 cutting part

15 reader device

16 parts

17 Unit Control Department

20 belt conveyor path

20a insertion port

20b Discharge outlet

21 Carrier tape conveyor device

25 motor

26 first sprocket

28 Second sprocket

28a pin

28d pin bottom

28e pin front

30 third sprocket

30a pin

38 inner cover

59Foreign body receiving department

59a groove

59b first foreign body guide part

59c second foreign object guide part

60 main body

61 base

62 main frame

62g conveying surface

62h foreign body discharge hole

62k cover assembly department

62m foreign body discharge port

62L first side

62R second side

63 sub-frame

80 exposed part

90 with hood

90a parts extraction port

90b, 90c escape holes

93 foreign body

622, 623 opening

Hb depth

Jrotation axis

P1 parts supply position

Pt1 spacing.

Detailed ways

According to a first aspect of the present disclosure, a carrier tape conveyor device conveys a carrier tape that accommodates components and is provided with feed holes at predetermined intervals. The carrier tape conveying device includes: a frame having a conveying surface that supports and guides the conveyed carrier tape from below; and a sprocket having a plurality of pins that radially protrude corresponding to the distance between the feed holes. The pin is rotated while protruding upward from the opening formed in the conveyance surface to engage the pin with the feed hole, thereby conveying the carrier tape. The length of the portion of the pin hidden below the conveying surface is longer than the length of the portion of the pin protruding from the conveying surface.

According to the carrier tape conveying device of the first aspect, even if a foreign matter invades inside from the opening and remains between the pins of the sprocket, the pin is hidden in the carrier tape conveying device compared with the length of the portion of the pin protruding from the conveying surface. The portion below the conveying surface is long, so foreign matter easily falls below the conveying surface. This can reduce the problem that foreign matter is caught between the pin and the edge of the opening and the carrier tape cannot be conveyed.

According to a second aspect of the present disclosure, there is provided the component conveying device according to the first aspect, wherein the overall length of the pin is longer than the interval between the root portions of adjacent pins, that is, the inter-pin distance. This can further reduce the problem that foreign matter easily falls below the conveyance surface and is sandwiched between the pin and the edge of the opening, making it impossible to convey the carrier tape.

According to a third aspect of the present disclosure, there is provided the component conveying device according to the first aspect or the second aspect, wherein a foreign matter receiving portion for receiving foreign matter falling as the sprocket rotates is provided below the sprocket, said Foreign matter enters through the opening and remains on the surface of the sprocket sandwiched between the pins. The foreign matter receiving portion can prevent foreign matter from moving to an unexpected place inside the carrier tape conveying device.

According to a fourth aspect of the present disclosure, there is provided the component conveying device according to any one of the first to third aspects, the component conveying device having a foreign matter guide portion that guides foreign matter toward a discharge portion. As a result, foreign matter that has invaded the inside of the carrier tape conveying device can be reliably discharged.

According to a fifth aspect of the present disclosure, there is provided the component conveying device according to the fourth aspect, wherein a downwardly recessed portion is provided in the foreign matter guide portion, and a groove is formed to collect foreign matter falling to the foreign matter guide portion. This can prevent foreign matter that has invaded the inside of the carrier tape conveying device from freely moving inside the device.

According to a sixth aspect of the present disclosure, there is provided the component conveying device according to the fifth aspect, wherein the discharge portion is arranged in a portion where the groove is located. As a result, foreign matter that has entered the carrier tape conveying device can be reliably discharged.

According to a seventh aspect of the present disclosure, there is provided a tape feeder that conveys a carrier tape having feed holes provided at predetermined intervals and supplies components accommodated in the carrier tape to a component supply position, the tape feeder having a first The carrier tape conveying device according to any one of the aspects to the sixth aspect, wherein the carrier tape conveying device conveys the carrier tape and supplies the components to the component supply position. This makes it possible to realize a tape feeder that reduces defects caused by foreign matter.

Hereinafter, exemplary embodiments of the component mounting device of the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the specific structures of the following embodiments, and structures based on the same technical ideas are included in the present disclosure.

(implementation)

The structure of the component mounting device 1 according to the embodiment of the present disclosure will be described with reference to FIG. 1 . FIG. 1 is a schematic diagram of the component mounting device 1 . In FIG. 1 , as two axial directions orthogonal to each other in the horizontal plane, the X direction of the substrate conveyance direction (the direction perpendicular to the paper surface in FIG. 1 ) and the Y direction orthogonal to the substrate conveyance direction (the direction perpendicular to the paper in FIG. 1 ) are shown. left and right direction). In addition, as the height direction orthogonal to the horizontal plane, the Z direction (the up-and-down direction and the longitudinal direction in FIG. 1 ) is shown. In addition, the radial direction represents the radial direction of the rotation shaft, and the thrust direction represents the axial direction of the rotation shaft.

The component mounting device 1 manufactures a mounting substrate in which components are mounted on the substrate. The substrate transport mechanism 2 provided on the upper surface of the base 1a transports, positions and holds the substrate 3 in the X direction. Above the substrate transport mechanism 2, a mounting head 4 is provided that moves in the horizontal direction (X direction, Y direction) by a head moving mechanism (not shown). On the side of the substrate transport mechanism 2, a plurality of tape feeders 6 are arranged and installed in the X direction on the upper part of the trolley 5 coupled to the base 1a. The tape feeder 6 is a component supply device that supplies components to the component mounting device 1 .

A reel holding portion 9 is provided on the front side of the trolley 5 and below the tape feeder 6 . The reel holding portion 9 rotatably supports the reel 8 for accommodating the reel 8 supplied to the component mounting device 1 . The component carrier tape 7 is wound. The tape feeder 6 conveys the carrier tape 7 accommodated in the reel 8 in the tape feeding direction, and supplies components to the component supply position P1 of the mounting head 4 .

The component mounting device 1 includes a substrate transport mechanism 2, a mounting head 4, and a mounting control unit 10 that controls a head moving mechanism. The mounting control unit 10 sends a component supply command to the unit control unit 17 of the tape feeder 6, controls the mounting head 4 and the head moving mechanism, and uses the mounting head 4 to take out the components supplied to the component supply position P1 by the tape feeder 6, and executes the holding operation. The mounted component assembly operation is transferred to the mounting point of the substrate 3 by the substrate transport mechanism 2 . In this way, the tape feeder 6 supplies the components stored in the carrier tape 7 to the component mounting device 1 . The components stored in the carrier tape 7 are, for example, chip-type electronic components. An openable and closable main body cover 11 is provided above the base 1 a and the trolley 5 . The main body cover 11 covers the movable mechanism such as the mounting head 4 during operation so that the operator does not come into contact with it.

The on-board control unit 10 includes a storage unit, and is composed of, for example, a circuit such as a processor or an FPGA, and a storage unit such as a memory or SSD.

In FIG. 1 , a collection box 12 is provided at the lower part of the carriage 5 . The collection box 12 collects the empty carrier tape 7 that has taken out the components from the loading head 4 and discharged from the rear of the tape feeder 6 . A discharge chute 13 is provided on the rear side of the trolley 5 and guides the empty carrier tape 7 discharged from the tape feeder 6 to the recovery box 12 . The discharge chute 13 is provided with a cutting part 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 unit 14 and collected into the recovery box 12 .

"With Feeder"

Next, the structure of the tape feeder 6 will be described with reference to FIGS. 2 to 4 . FIG. 2 is a schematic diagram of the tape feeder 6 according to the embodiment. FIG. 3 is a partial plan view of the vicinity of the component supply position P1 of the tape feeder 6 . FIG. 4 is an explanatory diagram showing a schematic cross-section taken along line V in FIG. 2 .

The tape feeder 6 includes a tape conveyance path 20 , an exposed portion 80 , and a carrier tape conveyance device 21 inside the main body 60 . The tape conveyance path 20 includes an insertion port 20 a for inserting the carrier tape 7 , and a row for discharging the carrier tape 7 . Exit 20b. The main body 60 of the tape feeder 6 is composed of a plurality of components such as a base 61, a main frame 62, and a sub-frame 63. The base 61 is a part fixed to the trolley 5, and a main frame 62 and a subframe 63 are fixed in parallel thereto. The main frame 62 and the sub-frame 63 are plate-like members with a vertically long cross-section (see FIG. 4 ) when viewed in the Y direction. The belt conveyance path 20 is formed in the space sandwiched between the main frame 62 and the sub-frame 63 . The main frame 62 is a frame constituting the carrier tape conveying device 21 that conveys the carrier tape 7 along the tape conveying path 20, and includes a plurality of first to third sprockets 26, 28, and 30 and a motor 25 for driving them.

The tape conveyance path 20 guides the carrier tape 7 inserted into the tape conveyance path 20 from the insertion port 20a to the component supply position P1, and further guides it to the discharge port 20b. The exposed portion 80 peels off the top tape 7 b of the carrier tape 7 (see FIG. 5 ) from the carrier tape 7 to expose the components 16 packed in the carrier tape 7 . The exposed portion 80 in this embodiment adopts a method of peeling off the top tape 7b from the carrier tape 7. However, the top tape 7b may be cut using a cutter or the like to expose the component 16.

The insertion port 20a opens on the upstream side (left side in FIG. 2 ) of the belt conveyance path 20 in the belt feeding direction. The discharge port 20b opens on the downstream side (right side in Fig. 2) in the belt feeding direction. The belt conveyance path 20 communicates from the insertion port 20a to the discharge port 20b. The belt conveyance path 20 is an open section that is open upward from the section from the second sprocket 28 to the third sprocket 30 . The belt cover 90 covering the upper part of the open section is attached to the main body 60 . As shown in FIG. 3 , the belt cover 90 is arranged to straddle the upper portion of the main frame 62 and the upper portion of the subframe 63 , and a component extraction port 90 a is formed at a position corresponding to the component supply position P1 . The main frame 62 has a cover mounting portion 62k on an upper outer surface thereof to which the tape cover 90 is mounted. The cover mounting portion 62k has a recessed portion or a stepped shape, for example.

In addition, in this open section, the main frame 62 is provided with an opening 622 for exposing the pin 28 a of the second sprocket 28 (see FIG. 6 ). The pin 28a exposed from the opening 622 is engaged with the feed hole 7d of the carrier tape 7, and the carrier tape 7 is positioned as the second sprocket 28 rotates. The carrier tape 7 travels along the conveyance surface 62g below the tape cover 90 by the second sprocket 28, and the components 16 accommodated in the groove 7c of the carrier tape 7 are conveyed to the component supply position P1.

The mounting head 4 takes out the component 16 accommodated in the carrier tape 7 from the component take-out port 90a. The belt cover 90 is formed with escape holes 90b and 90c (see FIG. 3 ) for avoiding interference with the second sprocket 28 and the third sprocket 30 .

"Carrier Tape"

Next, the carrier tape 7 will be described in detail with reference to FIG. 5 . FIG. 5 is a schematic perspective view of the carrier tape 7 .

The carrier tape 7 has a base tape 7a and a top tape 7b. The base tape 7a is formed with storage portions 7e in one row and at equal intervals in the longitudinal direction by embossing. Recessed grooves 7c opening upward are formed inside the accommodating portion 7e, and the components 16 are accommodated in each of the recessed grooves 7c. The top tape 7b is adhered to the upper surface of the base tape 7a, and the component 16 is enclosed in the groove 7c. A plurality of feed holes 7d are arranged in one row at an equal interval Pt1 at positions aligned parallel to the rows of grooves 7c of the base tape 7a. The depth Hb of the groove 7c of the storage member 16 is a size corresponding to the size of the component to be accommodated. In addition, the width Wa of the carrier tape 7 is also appropriately selected according to the size of the component.

"Carrier Tape Conveying Device"

Next, the carrier tape conveying device 21 will be described with reference to FIGS. 2 and 7 . FIG. 7 is a YZ plan view of the carrier tape conveying device 21 .

The carrier tape conveyance device 21 conveys the carrier tape 7 to the component supply position P1 on the downstream side of the tape conveyance path 20 . The carrier tape conveying device 21 includes a main frame 62, at least one sprocket, a motor 25, and a plurality of drive gears that transmit the power of the motor 25 to the sprocket and rotate it. The carrier tape conveying device 21 of this embodiment includes three sprockets: a first sprocket 26 , a second sprocket 28 , and a third sprocket 30 .

The first sprocket 26 is mounted in a state of being rotatable relative to the main frame 62 about a horizontal rotation axis parallel to the X direction. The second sprocket 28 is mounted in a state of being rotatable relative to the main frame 62 about a horizontal rotation axis J (see FIG. 4 ) parallel to the X direction. The third sprocket 30 is assembled in a state of being rotatable relative to the main frame 62 about a horizontal rotation axis parallel to the X direction.

The carrier tape conveying 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 via these gears.

Next, the main frame 62 of the carrier tape conveying device 21 will be described with reference to FIG. 8 . FIG. 8 is a longitudinal cross-sectional view of the carrier tape conveying device 21 in the XZ plane.

As shown in FIG. 8 , the main frame 62 has a first surface 62L and a second surface 62R as side surfaces, which are vertical and horizontal along the conveying direction of the carrier tape 7 on the tape conveying path 20 (with respect to The YZ plane expands parallel). The main frame 62 is a plate-shaped member with a small thickness T between the first surface 62L and the second surface 62R. Therefore, the cross section (XZ cross section) of the main frame 62 orthogonal to the conveyance direction of the carrier tape 7 is vertically long.

The main frame 62 is formed with a flat conveyance surface 62g on the upper portion for guiding the carrier tape 7 along the tape conveyance path 20 . A plurality of openings through which the pins of each sprocket protrude are formed in the conveyance surface 62g. For example, in the opening 622, the pin 28a of the second sprocket 28 protrudes from the conveyance surface 62g. Furthermore, in the downstream opening 623, the pin 30a of the third sprocket 30 protrudes from the conveyance surface 62g.

These pins 28a and 30a are inserted into the feed hole 7d of the carrier tape 7 located on the conveyance surface 62g. Therefore, when the first to third sprockets 26, 28, and 30 rotate, the carrier tape 7 is sent out by the pins of each sprocket and moves along the conveyance surface 62g. A foreign matter receiving portion 59 is disposed below the first to third sprockets 26, 28, and 30. The foreign matter receiving portion 59 guides foreign matter entering between the pins of each sprocket to the foreign matter discharge hole 62h and the foreign matter discharge port 62m.

Next, the recovery of the foreign matter 93 dropped between the pins 28a will be described with reference to FIGS. 7 and 8 . The foreign matter 93 is, for example, dust, components 16 scattered from the carrier tape 7 during the replacement operation of the tape feeder 6 , or the like.

The foreign matter receiving portion 59 receives the foreign matter 93 that enters through each opening and is sandwiched by the pins of each sprocket to remain on the surface of the sprocket. The foreign matter 93 falls as the sprocket rotates. For example, inside the main frame 62 , the front end of the pin 28 a of the second sprocket 28 is surrounded by the foreign matter receiving portion 59 . The foreign matter receiving portion 59 is arranged between the main frame 62 and the inner cover 38 .

The foreign matter receiving portion 59 has a first foreign matter guide portion 59b and a second foreign matter guide portion 59c that guide the foreign matter 93 toward the foreign matter discharge hole 62h and the foreign matter discharge port, respectively. 62m to boot. The first foreign matter guide portion 59 b guides the foreign matter 93 that enters the main frame 62 as the second sprocket 28 rotates, for example, to the groove 59 a arranged below the second sprocket 28 . The first foreign matter guide portion 59 b is a part of the upper surface of the foreign matter receiving portion 59 and is formed along a circle connecting the front ends of the pins 28 a of the second sprocket 28 .

The groove 59a is a recessed portion recessed downward from the first foreign matter guide portion 59b, and is connected to the foreign matter discharge hole 62h formed in the main frame 62 and communicating with the outside. The foreign matter 93 dropped between the pins 28a rotates together with the second sprocket 28, falls to the first foreign matter guide portion 59b, and is collected in the groove 59a. The foreign matter discharge hole 62h is arranged in the part where the groove 59a is located, for example, in the lower part of the groove 59a. The operator can collect the foreign matter 93 collected in the groove 59a through the foreign matter discharge hole 62h.

A second foreign matter guide portion 59 c is formed below the third sprocket 30 by the foreign matter receiving portion 59 . The second foreign matter guide portion 59c guides the foreign matter 93 dropped into the main frame 62 toward the foreign matter discharge port 62m together with the rotation of the third sprocket 30. The second foreign matter guide portion 59c is a part of the upper surface of the foreign matter receiving portion 59 and is inclined downward. The foreign matter 93 dropped from the third sprocket 30 into the second foreign matter guide portion 59c moves along the second foreign matter guide portion 59c due to its own weight, and is discharged from the foreign matter discharge port 62m to the outside of the main frame 62.

Next, the length of the sprocket pin will be described with reference to FIG. 9 . Figure 9 is a partial side view of the sprocket. Here, the length of the pin 28a of the second sprocket 28 is described, but the pins of the first sprocket 26 and the pin 30a of the third sprocket 30 may have the same structure.

The upper part of the pin 28a of the second sprocket 28 protrudes upward from the conveyance surface 62g of the carrier tape 7. The length of the portion Lp2 that does not protrude from the conveyance surface 62g is longer than the length Lp1 of the pin 28a of the portion that protrudes upward from the conveyance surface 62g of the carrier tape 7 . In other words, the length Lp2 from the pin bottom 28d of the second sprocket 28 to the conveyance surface 62g of the carrier tape 7 is longer than the length Lp1 of the pin 28a of the second sprocket 28 protruding from the conveyance surface 62g of the carrier tape 7. Therefore, even if the foreign matter 93 falls between the two pins 28a, since the length Lp2 of the pin 28a is long, it can be reduced that the foreign matter 93 invades below the conveyance surface 62g and is caught between the edge of the opening 622 and the pin 28a. situation during the period.

In addition, the overall length Lp3 of the pin 28a of the second sprocket 28 is larger than the maximum dimension of the member 16. In other words, the difference Lp3 between the radius Rt to the pin front end 28e of the second sprocket 28 and the radius Rb of the pin bottom 28d of the second sprocket 28 is larger than the maximum dimension of the component 16. Accordingly, even if the component 16 falls between the two pins 28 a as the foreign object 93 , the situation that the component 16 is caught between the edge of the opening 622 and the pins 28 a can be further reduced.

In addition, 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 root portions of adjacent pins 28a. Therefore, even if the foreign matter 93 invades the opening 622 and remains between the pins 28a of the second sprocket 28, it can be further prevented that the foreign matter 93 is caught between the pins 28a and the edges of the opening 622 and fails to convey the load. With 7 such glitches. In addition, the ability to capture the foreign matter 93 between the pins 28 a of the second sprocket 28 becomes higher, and the possibility that the foreign matter 93 becomes unaccounted for inside the carrier tape conveying device 21 can be reduced.

The carrier tape conveyance device 21 of this embodiment conveys the carrier tape 7 which accommodates the components 16 and is provided with feed holes 7d at a predetermined pitch Pt1. The carrier tape conveying device 21 includes a main frame 62 and a second sprocket 28 . The main frame 62 has a conveying surface 62g that supports and guides the conveyed carrier tape 7 from below. The second sprocket 28 has a plurality of pins 28a that protrude radially corresponding to the pitch Pt1 of the feed hole 7d. The second sprocket 28 has the pins 28a protruding upward from the opening 622 formed in the conveyance surface 62g. By rotating, the pin 28a is engaged with the feed hole 7d, and the carrier tape 7 is conveyed. The length Lp2 of the portion of the pin 28a hidden below the conveyance surface 62g is longer than the length LP1 of the portion of the pin 28a protruding from the conveyance surface 62g.

Even if the foreign matter 93 as a foreign matter invades the inside from the opening 622 and remains between the pins 28a of the second sprocket 28, the length Lp2 of the pins 28a is longer than the length Lp1, so the foreign matter 93 easily falls onto the conveyance surface. below. This can avoid a problem in which the foreign object 93 is caught between the pin 28 a and the edge of the opening 622 and the carrier tape 7 cannot be conveyed.

In addition, in the carrier tape conveying 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 can further reduce the possibility of foreign matter 93 being sandwiched between the pin 28 a and the edge of the opening 622 . Furthermore, the ability to capture the foreign matter 93 between the pins 28 a of the second sprocket 28 becomes higher, thereby reducing the possibility that the foreign matter 93 becomes unaccounted for inside the carrier tape conveyance device 21 .

In addition, in the carrier tape conveying device 21 of the present embodiment, a foreign matter receiving portion 59 is provided below the second sprocket 28 to receive the foreign matter 93 dropped from the opening as the second sprocket 28 rotates. The foreign matter that enters the portion 622 and remains on the surface of the second sprocket 28 sandwiched by the pins 28 a.

In the structure of Patent Document 1, foreign matter such as components that have fallen into the tape feeder may move freely in gaps inside the tape feeder, and the foreign matter that becomes unaccounted for may cause a malfunction. In the carrier tape conveying device 21 of the present embodiment, the foreign matter receiving portion 59 can prevent the foreign matter 93 from moving to an unexpected place inside the carrier tape conveying device 21 .

In addition, the carrier tape conveying device 21 of this embodiment has the first and second foreign matter guide portions 59b and 59c in the foreign matter receiving portion 59 that guide the foreign matter 93 to the foreign matter discharge hole 62h and the foreign matter discharge port 62m. In Patent Document 1, it is complicated to take out the foreign matter that has invaded the inside of the tape feeder to the outside of the tape feeder. However, the first and second foreign matter guide portions 59b and 59c can reliably and easily discharge the foreign matter that has invaded the tape conveying device. 21 Internal foreign objects 93.

In addition, in the carrier tape conveying device 21 of this embodiment, the first foreign matter guide portion 59b is provided with a downwardly recessed portion, and a groove 59a is formed to collect the foreign matter 93 dropped to the first foreign matter guide portion 59b. This can further suppress the foreign matter 93 that has invaded the inside of the carrier tape conveying device 21 from freely moving inside the device.

In addition, in the carrier tape conveying device 21 of this embodiment, the foreign matter discharge hole 62h is arranged in the portion where the groove 59a is located. Thereby, the foreign matter 93 which invaded the inside of the carrier tape conveyance device 21 can be reliably discharged.

In addition, the tape feeder 6 of this embodiment conveys the carrier tape 7 provided with the feed holes 7d at a predetermined pitch Pt1, and supplies the components 16 accommodated in the carrier tape 7 to the component supply position P1. The tape feeder 6 is provided with the carrier tape conveying device 21 described above, and the carrier tape 7 is conveyed by the carrier tape conveying device 21 to supply the components 16 to the component supply position P1.

By including the carrier tape conveying device 21 , the tape feeder 6 can similarly reduce defects caused by foreign matter.

This disclosure has been fully described in association with preferred embodiments with reference to the accompanying drawings, but various modifications and corrections will be apparent to those skilled in the art. It should be understood that such modifications and corrections are included as long as they do not depart from the scope of the present disclosure based on the appended technical claims. In addition, combinations of elements and changes in order of the elements of each embodiment can be implemented without departing from the scope and idea of the present disclosure.

In the above-mentioned embodiment, it has been explained that in the second sprocket 28, the length Lp2 of the portion of the pin 28a hidden below the conveyance surface 62g is longer than the length Lp1 of the portion of the pin 28a that protrudes from the conveyance surface 62g. structure, but is not limited to this. The first sprocket 26 and the third sprocket 30 may also have the same structure as the second sprocket 28 .

It should be noted that by appropriately combining any of the various embodiments and modifications described above, the respective effects can be produced.

Industrial availability

The component conveyance device of the present disclosure can be applied to a component conveyance device that conveys components toward a component supply position and a tape feeder provided with the component conveyance device.

Claims (7)

1. A carrier tape conveying device that conveys a carrier tape, and the carrier tape storage component is provided with feed holes at prescribed intervals, wherein, The carrier tape conveyor device has: a frame having a conveying surface that supports and guides the conveyed carrier tape from below; and A sprocket having a plurality of pins protruding radially corresponding to the pitch of the feed holes, and the pins are rotated while protruding upward from an opening formed in the conveying surface. Engage with the feed hole to transport the carrier tape, The length of the portion of the pin hidden below the conveying surface is longer than the length of the portion of the pin protruding from the conveying surface. 2. The carrier tape conveying device according to claim 1, wherein, The overall length of the pin is longer than the distance between the root portions of adjacent pins, that is, the inter-pin distance. 3. The carrier tape conveying device according to claim 1, wherein, A foreign matter receiving portion is provided below the sprocket to receive foreign matter falling as the sprocket rotates. The foreign matter enters through the opening and remains on the surface of the sprocket sandwiched by the pin. of foreign matter. 4. The carrier tape conveying device according to claim 3, wherein, The foreign matter receiving portion has a foreign matter guide portion that guides foreign matter toward the discharge portion. 5. The carrier tape conveying device according to claim 4, wherein, The foreign matter guide portion is provided with a downwardly recessed portion, and a groove is formed to collect foreign matter falling into the foreign matter guide portion. 6. The carrier tape conveying device according to claim 5, wherein, The discharge part is arranged at the part where the groove is located. 7. A tape feeder that conveys a carrier tape provided with feed holes at predetermined intervals and supplies components accommodated in the carrier tape to a component supply position, wherein: The tape feeder is provided with the carrier tape conveying device according to any one of claims 1 to 6, The carrier tape is conveyed by the carrier tape conveying device to supply the components to the component supply position.