JP2024051928A - Tape feeder position adjustment device, and tape feeder position adjustment method - Google Patents

Abstract

To provide a tape feeder position adjustment device capable of easily and quickly performing tape feeder position adjustment work, and a tape feeder position adjustment method.SOLUTION: The position of a target on a main body 51 in a lateral direction is measured in a state where an eccentric pin protruding from a main body 51 of a tape feeder 16 is inserted into a through hole formed in a mounting slot. Based on the measured position of the target in the lateral direction, the eccentric pin is rotated from the opposite side of the tape feeder 16 through the through hole by an eccentric pin rotation unit 75. The position of the tape feeder 16 is adjusted in the lateral direction by displacing the tape feeder 16 in the lateral direction.SELECTED DRAWING: Figure 10

Description

The present invention relates to a tape feeder position adjustment device and a tape feeder position adjustment method that adjust the lateral position of a tape feeder that transports a carrier tape relative to a mounting slot.

Conventionally, component mounting devices are known that use a nozzle to pick up components supplied by a tape feeder and mount them on a board. The tape feeder is attached to a tape feeder attachment slot provided in the component mounting device, and the carrier tape is transported by rotating a sprocket with the feed pins engaged with the feed holes of the carrier tape.

In the above-mentioned component mounting device, when the nozzle picks up a component from the tape feeder, it is automatically moved to the component removal port of the tape feeder. For this reason, the component removal port of the tape feeder must be accurately positioned. The tape feeder is positioned relative to the mounting slot by, for example, inserting an eccentric pin provided on the tape feeder into a positioning hole on the mounting slot side, and rotating the eccentric pin to swing the tape feeder laterally (in a direction that intersects the carrier tape transport direction in a horizontal plane), as shown in the following patent document.

JP 2000-49495 A

However, the above-mentioned eccentric pin rotation work (i.e., the work of adjusting the lateral position of the tape feeder) had to be done manually by an operator. This resulted in the problem that adjusting the position of the tape feeder was time-consuming and required a lot of time to adjust the positions of all of the multiple tape feeders lined up on the feeder base.

The present invention aims to provide a tape feeder position adjustment device and a tape feeder position adjustment method that can easily and quickly perform tape feeder position adjustment work.

The tape feeder position adjustment device of the present invention is a tape feeder position adjustment device that adjusts the lateral position of a tape feeder that includes a main body having a sprocket that transports a carrier tape forward and an eccentric pin that protrudes forward from the front end of the main body, the tape feeder being equipped with a mounting slot in which the tape feeder is mounted, a through hole that is provided in the mounting slot and into which the eccentric pin is inserted to perform the lateral positioning of the tape feeder mounted in the mounting slot, an eccentric pin rotation unit that rotates the eccentric pin from the opposite side of the tape feeder through the through hole to displace the tape feeder mounted in the mounting slot in the lateral direction, a measurement unit that measures the lateral position of a target on the main body, and a position adjustment unit that adjusts the lateral position of the tape feeder by rotating the eccentric pin with the eccentric pin rotation unit based on the lateral position of the target measured by the measurement unit.

The tape feeder position adjustment method of the present invention is a tape feeder position adjustment method for adjusting the lateral position of a tape feeder having a main body having a sprocket for transporting a carrier tape forward and an eccentric pin extending forward from the front end of the main body, the method including: a mounting step of mounting the tape feeder in the mounting slot by inserting the eccentric pin into a through hole provided in the mounting slot in which the tape feeder is mounted, and causing the through hole to perform the lateral positioning of the tape feeder; a measuring step of measuring the lateral position of a target on the main body while the tape feeder is mounted in the mounting slot in the mounting step; and a position adjustment step of rotating the eccentric pin from the opposite side of the tape feeder through the through hole by an eccentric pin rotating unit based on the lateral position of the target measured in the measuring step, thereby displacing the tape feeder in the lateral direction to adjust the lateral position of the tape feeder.

According to the present invention, tape feeder position adjustment work can be performed easily and quickly.

1 is a perspective view of a component mounting device that uses a tape feeder whose position is adjusted by a tape feeder position adjustment device according to an embodiment of the present invention; 1A and 1B are perspective views showing a feeder base provided in a component mounting device according to an embodiment of the present invention together with a tape feeder; FIG. 1 is a front view of a part of a wall portion of a feeder base provided in a component mounting device according to an embodiment of the present invention; FIG. 1 is a perspective view of a reel and a carrier tape wound around the reel included in a component mounting device according to an embodiment of the present invention; 1A and 1B are perspective views of a tape feeder provided in a component mounting device according to an embodiment of the present invention; FIG. 2A is a side view of a tape feeder according to an embodiment of the present invention; FIG. 1 is an enlarged plan view of a portion of a tape feeder according to an embodiment of the present invention. 1A, 1B, and 1C are explanatory diagrams illustrating the configuration of a first positioning pin provided in a tape feeder according to an embodiment of the present invention. 1A and 1B are partial cross-sectional side views of a portion of a tape feeder and a portion of a feeder base according to an embodiment of the present invention. FIG. 1 is a perspective view showing a tape feeder position adjustment device according to an embodiment of the present invention together with a tape feeder; 1A and 1B are perspective views showing an adjustment device base provided in a tape feeder position adjustment device according to an embodiment of the present invention, together with a tape feeder; FIG. 1 is a front view of a portion of a wall portion of an adjustment device base provided in a tape feeder position adjustment device according to an embodiment of the present invention; FIG. 1 is a partially sectional plan view showing an eccentric pin rotation portion of a tape feeder position adjustment device according to an embodiment of the present invention, together with a part of a tape feeder mounted on an adjustment device base; FIG. 1 is a partially sectional plan view showing an eccentric pin rotation portion of a tape feeder position adjustment device according to an embodiment of the present invention, together with a part of a tape feeder mounted on an adjustment device base; FIG. 2 is a block diagram showing a control system of a tape feeder position adjustment device according to an embodiment of the present invention. A flowchart showing a procedure for adjusting the position of a tape feeder by a tape feeder position adjustment device according to an embodiment of the present invention. A flowchart showing a procedure for adjusting the position of a tape feeder by a tape feeder position adjustment device according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the configuration of a component mounting device that uses a tape feeder whose position is adjusted by the tape feeder position adjustment device (tape feeder position adjustment method) of the present invention will be described.

Figure 1 shows a component mounting device 1. The component mounting device 1 is a device that mounts components BH on a board KB. As shown in Figure 1, the component mounting device 1 has a board transport unit 12 on a base 11. The board transport unit 12 transports the board KB horizontally and positions it at a predetermined working position. For ease of explanation, the direction in which the board KB is transported by the board transport unit 12 is referred to as the X direction, and the horizontal direction perpendicular to the X direction is referred to as the Y direction. The up and down direction is referred to as the Z direction.

A mounting head 13 is provided above the base 11. The mounting head 13 is moved horizontally by a head movement mechanism (not shown). The mounting head 13 has multiple component holding nozzles 14 that extend downward.

In FIG. 1, a cart 15 is connected to the Y-direction end of the base 11. A number of tape feeders 16 are mounted on the cart 15 as part supply units, lined up in the X-direction.

In FIG. 1, the cart 15 has a feeder base 21 and a reel holding section 22. The feeder base 21 is the portion on which the tape feeder 16 is attached, and as shown in FIGS. 2(a) and (b), has a block-shaped base 31 and a wall section 32 provided at the front of the base 31 and extending upward. The top surface of the base 31 is a feeder support section 33, and the rear surface of the base 31 is a feeder connection surface 34.

The base 31 has mounting slots 35 arranged side by side in the X direction, into which the tape feeders 16 are attached. As shown in FIG. 2(a), each mounting slot 35 is composed of a pair of feeder guides 41 arranged side by side in the X direction on the feeder support portion 33, a first positioning hole 42 and a second positioning hole 43 which are through holes penetrating the wall portion 32 in the thickness direction (Y direction), and a mounting hole 44 and a socket 45 provided in the feeder connection surface 34. Thus, in this embodiment, the feeder base 21 has a plurality of mounting slots 35 arranged side by side in the X direction.

The feeder guide 41 is composed of rail-shaped members extending in the front-rear direction (Y direction) and arranged side by side in the horizontal direction (X direction, a direction intersecting the carrier tape transport direction in a horizontal plane). The first positioning hole 42 and the second positioning hole 43 are arranged side by side in the Z direction, with the first positioning hole 42 located above the second positioning hole 43. The first positioning hole 42 is an elongated hole extending in the vertical direction, and the second positioning hole 43 is a circular hole (Figure 3). The mounting hole 44 and the socket 45 are provided in the feeder connection surface 34. The mounting hole 44 and the socket 45 are arranged side by side in the Z direction, with the mounting hole 44 located above the socket 45.

The reel holding section 22 rotatably holds the reel RL around which the carrier tape CT transported by the tape feeder 16 is wound. As shown in FIG. 4, the carrier tape CT contains a number of components BH arranged in a row. The carrier tape CT has a number of feed holes KH arranged in a row parallel to the row of components BH (FIG. 4).

Figures 5(a) and (b) and 6(a) and (b) show the tape feeder 16. The tape feeder 16 has a main body 51 removably attached to the feeder base 21, and is configured to pull out the carrier tape CT from the reel RL and supply it to a component removal position 16T (Figure 7; Figure 7 is an enlarged view of the area RY shown in Figure 6(b)) within the component removal opening 16K.

In FIG. 6(a), an introduction sprocket 52, a positioning sprocket 53, and a discharge sprocket 54 are provided at the upper front portion of the main body 51 of the tape feeder 16. The introduction sprocket 52, the positioning sprocket 53, and the discharge sprocket 54 each have a plurality of feed pins 55 on their outer periphery.

The three sprockets (inlet sprocket 52, positioning sprocket 53, and discharge sprocket 54) are rotated in the same direction via a gear mechanism by a motor (not shown) provided inside the main body 51. The direction in which the three sprockets rotate is the direction in which the feed pin 55 located at the highest position of each sprocket moves forward, thereby transporting the carrier tape CT toward the front of the main body 51. Here, "forward" refers to the direction in the Y direction that faces the substrate transport section 12 when viewed from the tape feeder 16.

In FIG. 6(a), inside the main body 51, a tape transport path 56, which is a passage for the carrier tape CT, is formed and extends generally in the Y direction. At the rear end of the main body 51, a tape inlet 57, which is the entrance of the carrier tape CT into the tape transport path 56, is provided, and at the front end of the main body 51, a tape outlet 58, which is the exit of the carrier tape CT from the tape transport path 56, is provided.

The three sprockets are positioned from rear to front in the following order: introduction sprocket 52, positioning sprocket 53, and discharge sprocket 54. The leading end of the carrier tape CT inserted into the tape transport path 56 from the tape introduction port 57 is moved forward by the introduction sprocket 52 and handed over to the positioning sprocket 53. The positioning sprocket 53 transports the carrier tape CT received from the introduction sprocket 52 forward, and transports the components BH stored on the carrier tape CT forward while intermittently positioning them at the component removal port 16K. The discharge sprocket 54 transports the carrier tape CT received from the positioning sprocket 53 forward, and discharges it from the tape discharge port 58 to the outside of the main body 51.

In this embodiment, the lead-in sprocket 52, positioning sprocket 53, and discharge sprocket 54 provided on the main body 51 of the tape feeder 16 function as a tape transport section that transports the carrier tape CT forward by rotating with the feed pin 55 engaged with the feed hole KH of the carrier tape CT.

As described above, each component BH stored on the carrier tape CT is positioned at the component removal opening 16K by the positioning sprocket 53. At this time, the positioning sprocket 53 controls the front-to-rear position of the carrier tape CT using the highest position feed pin 55 (hereinafter referred to as the "highest position feed pin 55S"; Figure 6(a)), and accurately positions the component BH at the component removal opening 16K.

As shown in Figures 6(a) and (b), a tape cover 59 is provided at the upper front of the main body 51, covering from above the portion of the tape transport path 56 that is located between the positioning sprocket 53 and the discharge sprocket 54. The component removal opening 16K described above is formed in the tape cover 59 (Figure 7). Therefore, the component BH positioned at the component removal opening 16K is exposed upward. This allows the mounting head 13 to suck and hold the component BH located at the component removal opening 16K with the component holding nozzle 14, and remove (pick up) it from the tape feeder 16.

As shown in FIG. 7, the tape cover 59 has an escape hole 60 extending in the Y direction. The escape hole 60 is provided to prevent interference between the feed pin 55 of the positioning sprocket 53 and the tape cover 59.

In Figures 5(a), (b) and 6(a), the front end of the main body 51 is provided with two positioning pins that extend forward: a first positioning pin 61 located on the upper side and a second positioning pin 62 located on the lower side. The outer diameter of the first positioning pin 61 (cross-sectional shape when cut in the XZ plane) is circular, and its diameter is slightly smaller than the inner dimension of the small diameter side (width direction of the main body 51) of the first positioning hole 42, which is an elongated hole extending in the vertical direction.

8(a) and (b), the first positioning pin 61 has a cone-shaped tip 61T, a cylindrical large diameter portion 61H, and a cylindrical mounting shaft 61B. The center line C1 of the mounting shaft 61B and the center line C2 of the large diameter portion 61H (hereinafter referred to as the large diameter portion center line) extend in the same direction in parallel, but are eccentric pins eccentric by an eccentricity amount Ec in the radial direction. The mounting shaft 61B is mounted in a state where it is pressed into the pin mounting hole 51H formed in the main body 51. When mounted in the pin mounting hole 51H, the center line C1 and the large diameter portion center line C2 of the first positioning pin 61 extend in the Y direction (forward) from the main body 51. Therefore, when the first positioning pin 61 is rotated around the center line C1, the large diameter portion 61H rotates while drawing a circular orbit CK whose radius is the eccentricity amount Ec around the center line C1 (FIG. 8(c)). As a result, the large diameter portion 61H is displaced in the X direction (horizontal direction) within a range of ±Ec based on the center line C1.

In FIG. 5(a), a groove 61M with a linear shape (a "minus" shape) is provided at the tip 61T of the first positioning pin 61. Therefore, by fitting a tool with a linear end into the groove 61M and twisting it, the first positioning pin 61 can be rotated in the above-mentioned eccentric state.

In Figures 5(a), (b) and 6(a), a downward extension 63 is formed at the rear of the main body 51 of the tape feeder 16, extending downward. A fixed portion 64 and a connector 65 are provided on the front side of the downward extension 63. When the tape feeder 16 is attached to the attachment slot 35, the engaged portion 51K (Figure 5(a)) provided on the lower part of the main body 51 is inserted between the feeder guides 41 that constitute the attachment slot 35. As a result, the first positioning pin 61 is inserted into the first positioning hole 42, and the second positioning pin 62 is inserted into the second positioning hole 43 (Figures 9(a) -> 9(b)).

When the tape feeder 16 is mounted in the mounting slot 35 as described above, the fixed portion 64 fits into the mounting hole 44, and the connector 65 fits into the socket 45. When the fixed portion 64 fits into the mounting hole 44, the fixed portion 64 connects with a fixing portion (not shown) provided inside the base 31, and the tape feeder 16 is fixed to the base 31. When the connector 65 engages with the socket 45, the tape feeder 16 is electrically and signal-transmittingly connected to the base 31 (i.e., to the control unit of the component mounting device 1).

Furthermore, when the first positioning pin 61 is inserted into the first positioning hole 42 and the second positioning pin 62 is inserted into the second positioning hole 43 as described above, the tape feeder 16 is positioned relative to the mounting slot 35.

To increase productivity, the component mounting device 1 may perform component BH mounting work while simultaneously using multiple component holding nozzles 14 to simultaneously pick up components BH from multiple tape feeders 16, a so-called simultaneous pickup operation. To achieve simultaneous pickup, it is important to keep the variation in the component pick-up positions 16T of the tape feeders 16 mounted in the mounting slots 35 within a specified range.

The variation in the Y direction can be corrected by the transport of the carrier tape CT by the tape feeder 16, and the variation in the Z direction can be absorbed to some extent by the raising and lowering movement of the component holding nozzle 14 by the mounting head 13. However, the variation in the X direction (horizontal direction) of the tape feeder 16 cannot be fully addressed by correcting the stop position of the mounting head 13, so it is necessary to suppress the mechanical variation of the tape feeder 16. As described above, the position of the tape feeder 16 in the X direction of this embodiment is determined by inserting the first positioning pin 61 into the first positioning hole 42. Therefore, for tape feeders 16 whose mechanical variation does not meet the standard, the variation can be suppressed within the standard by rotating the first positioning pin 61 around the center line C1.

Next, we will explain the tape feeder position adjustment device 70, which is a device for adjusting the lateral position of the tape feeder 16 used in the component mounting device 1 configured as above relative to the mounting slot 35.

Figure 10 shows a tape feeder position adjustment device 70. As shown in Figure 10, the tape feeder position adjustment device 70 has an adjustment device base 71K on a stand 71. This adjustment device base 71K has the same structure as the feeder base 21 provided in the component mounting device 1, and as shown in Figures 11 (a) and (b), has a block-shaped platform 31K and a wall 32K provided at the front of the platform 31K and extending upward. The top surface of the platform 31K is a feeder support portion 33K, and the rear surface of the platform 31K is a feeder connection surface 34K.

The mounting slots 35K into which the tape feeders 16 are attached are arranged side by side in the X direction on the base 31K. As shown in FIG. 11(a), each mounting slot 35K is composed of a pair of feeder guides 41K arranged side by side in the X direction on the feeder support portion 33K, a first positioning hole 42K and a second positioning hole 43K which are through holes penetrating the wall portion 32K in the thickness direction (Y direction), and a mounting hole 44K and a socket 45K provided in the feeder connection surface 34K. Thus, in this embodiment, the adjustment device base 71K has a plurality of mounting slots 35K arranged side by side in the X direction.

The feeder guide 41K is made up of rail-shaped members extending in the front-rear direction (Y direction) and arranged side by side in the horizontal direction (X direction). The first positioning hole 42K and the second positioning hole 43K are arranged side by side in the Z direction, with the first positioning hole 42K located above the second positioning hole 43K. The first positioning hole 42K is an elongated hole extending in the vertical direction, and the second positioning hole 43K is a circular hole (Figure 12). The mounting hole 44K and the socket 45K are arranged in the feeder connection surface 34K. The mounting hole 44K and the socket 45K are arranged side by side in the Z direction, with the mounting hole 44K located above the socket 45K.

In FIG. 10, the tape feeder position adjustment device 70 includes a table device 72 on a stand 71. A slide body 73 that is driven (slid) in the X direction by the table device 72 is provided on the table device 72. An advance/retract drive unit 74 and an eccentric pin rotation unit 75 that is moved (advanced/retreated) in the Y direction by the advance/retract drive unit 74 are provided on the slide body 73. In FIG. 10, a camera installation stand 76 is provided on the slide body 73, and a camera 77 is installed on the camera installation stand 76 as an imaging unit.

The camera 77 has an imaging field of view facing downward. The camera 77 images any one of the multiple feed pins 55 of the positioning sprocket 53, a characteristic part on the main body 51 of the tape feeder 16, or a mark formed on the tape feeder 16 as a target (imaging target). For this reason, the position of the camera 77 is adjusted so that the target falls within the imaging area SS (Figure 7). The adjustment device base 71K is a tape feeder mounting section having multiple mounting slots 35K arranged in the X direction (horizontal direction), and the targets of each of the multiple tape feeders 16 mounted on the adjustment device base 71K are aligned in a row in the X direction. For this reason, the camera 77 can move in the X direction to image the targets of all the tape feeders 16 mounted on the adjustment device base 71K.

As shown in Figures 13 and 14, the eccentric pin rotation unit 75 includes an advance/retract member 81 that is driven by the advance/retract drive unit 74 to advance/retract in the Y direction (front/rear direction), and a slide unit 82 that is movable in the Y direction relative to the advance/retract member 81. The advance/retract member 81 and slide unit 82 are connected by a pressure spring 83. As shown in Figures 13 and 14, the eccentric pin rotation unit 75 includes a reduction gear unit 84 attached to the slide unit 82. The reduction gear unit 84 holds a drive motor 85 as a rotation drive unit, and an output shaft 86 that outputs the rotation of the drive motor 85.

The speed reducer 84 reduces the rotation speed of the drive motor 85 by using an internal speed reducer mechanism (not shown) and increases the drive torque of the drive motor 85 to rotate the output shaft 86. The output shaft 86 is attached to the base end (rear end) of an adjustment bit 87 that extends in the Y direction and has its tip (front end) facing backward.

Figure 15 shows the control system of the tape feeder position adjustment device 70. As shown in Figure 15, the processing unit 90 of the tape feeder position adjustment device 70 includes a feeder insertion detection unit 91, a feeder drive control unit 92, a table device drive control unit 93, a forward/backward control unit 94, a target position recognition unit 95, a drive motor control unit 96, a displacement direction detection unit 101, a rotation direction determination unit 102, a judgment unit 103, a memory unit 104, and a position adjustment unit 105.

The feeder insertion detection unit 91 provided in the processing unit 90 detects which of the multiple mounting slots 35K provided in the adjustment device base 71K the tape feeder 16 is inserted into. The feeder drive control unit 92 drives the tape feeder 16 that is detected by the feeder insertion detection unit 91 as being mounted in the mounting slot 35K of the adjustment device base 71K to rotate the three sprockets (the introduction sprocket 52, the positioning sprocket 53, and the discharge sprocket 54) (i.e., to transport the carrier tape).

The table device drive control unit 93 drives the table device 72 mounted on the stand 71 to slide the slide body 73 in the horizontal direction (X direction). This causes the camera 77 as the imaging unit and the eccentric pin rotation unit 75 to move in the horizontal direction (X direction) together with the forward/backward drive unit 74.

The advance/retract control unit 94 moves (advance/retract) the eccentric pin rotating unit 75 in the front-rear direction (Y direction). Note that, here, the movement of the eccentric pin rotating unit 75 toward the tape feeder 16 (rearward movement) is referred to as "advancement," and the movement of the eccentric pin rotating unit 75 away from the tape feeder 16 (forward movement) is referred to as "retraction."

The advance/retract control unit 94 advances the eccentric pin rotation unit 75 from a state in which the tip of the adjustment bit 87 is positioned opposite in the Y direction to the first positioning hole 42K of the mounting slot 35K of the adjustment device base 71K in which the tape feeder 16 to be adjusted is mounted. This causes the adjustment bit 87 to be inserted into the first positioning hole 42K from the opposite side of the tape feeder 16.

In this embodiment, the forward/backward drive unit 74 is configured to move the adjustment bit 87 forward/backward relative to the first positioning hole 42K. The eccentric pin rotation unit 75 is also configured to include an adjustment bit 87 that engages with the first positioning pin 61 from the opposite side of the tape feeder 16 through the first positioning hole 42K, which is a through hole provided in the wall portion 32K that extends upward from the platform portion 31K of the adjustment device base 71K, and a drive motor 85 as a rotation drive unit that rotates the adjustment bit 87.

The target position recognition unit 95 recognizes the lateral position of the target based on the image of the target (specific part) captured by the camera 77. In this embodiment, the camera 77 as an imaging unit that captures the image of the target and the target position recognition unit 95 that recognizes the lateral position of the target based on the image of the target captured by the camera 77 constitute a measurement unit 110 that measures the lateral position of the target on the main body unit 51 (Figure 15). The drive motor control unit 96 rotates the adjustment bit 87 around the Y axis by operating the drive motor 85.

When the first positioning pin 61, which is an eccentric pin, is rotated by the eccentric pin rotation unit 75 (specifically, by the adjustment bit 87), the displacement direction detection unit 101 detects the displacement direction of the target based on the measurement result of the target position by the measurement unit 110. In detail, the displacement direction detection unit 101 detects the displacement direction in which the target is displaced horizontally (X direction) when the first positioning pin 61 is rotated by the adjustment bit 87 by a small initial angle Θ1.

The rotation direction determination unit 102 determines the rotation direction (whether the rotation direction is the one direction or the opposite direction) of the adjustment bit 87 required to move the target toward the center position of the imaging area SS (the position where the target should be located) based on the displacement direction of the target detected by the displacement direction detection unit 101 when the first positioning pin 61 is rotated in one direction by the initial angle Θ1 using the adjustment bit 87.

The determination unit 103 determines whether the lateral position of the target measured by the measurement unit 110 is within a predetermined range (tolerance range) to determine whether lateral position adjustment of the tape feeder 16 is necessary.

The storage unit 104 stores various data, such as data within a predetermined range that is necessary for the judgment unit 103 to make the above judgment. The storage unit 104 also stores data on the final adjustment results performed by the processing unit 90.

When the determination unit 103 determines that the lateral position adjustment of the tape feeder 16 is necessary, the position adjustment unit 105 rotates the first positioning pin 61, which is an eccentric pin, by an initial angle Θ1 in a predetermined direction using the eccentric pin rotation unit 75 to adjust the lateral position of the tape feeder 16 while checking the moving direction of the tape feeder 16. Furthermore, when the lateral position of the target is not located within a predetermined range even after rotating by the initial angle Θ1 and the determination unit 103 determines that the lateral position adjustment of the tape feeder 16 is still necessary, the position adjustment unit 105 further rotates by a predetermined adjustment angle Θ2. At this time, the direction in which the first positioning pin 61 is rotated is the direction determined by the rotation direction determination unit 102 based on the moving direction of the tape feeder 16 when the first positioning pin 61 is rotated by the initial angle Θ1. If the lateral position of the target is thus positioned within the predetermined range, the adjustment of the lateral position of the tape feeder 16 (rotation of the first positioning pin 61) is terminated, and if the lateral position of the target is not positioned within the predetermined range, the adjustment of the lateral position of the tape feeder 16 is continued. In this manner, the position adjustment unit 105 is adapted to determine whether or not to continue the adjustment of the lateral position of the tape feeder 16 based on the lateral position of the target.

When adjusting the lateral position of the tape feeder 16 mounted on the adjustment device base 71K, the processing unit 90 moves the slider 73 in the X direction by the table device 72, so that the tip of the adjustment bit 87 provided on the eccentric pin rotation unit 75 faces the first positioning hole 42K of the mounting slot 35K in which the tape feeder 16 to be adjusted is mounted in the Y direction (FIG. 13). Then, when the tip of the adjustment bit 87 faces the first positioning hole 42K, the advance/retract drive unit 74 advances (moves backward) the advance/retract member 81, and the tip of the adjustment bit 87 is inserted into the first positioning hole 42K (FIG. 14). As a result, the tip of the adjustment bit 87 fits into the groove portion 61M of the first positioning pin 61 inserted in the first positioning hole 42K, and the drive motor control unit 96 operates the drive motor 85 to rotate the output shaft 86, making it possible to rotate the first positioning pin 61 by the adjustment bit 87.

As described above, the advancing/retreating member 81 and the slide portion 82 are connected by the pressure spring 83, so that when the tip of the adjustment bit 87 is fitted into the groove portion 61M of the first positioning pin 61, the adjustment bit 87 can be pressed against the first positioning pin 61 with an appropriate pressure. That is, in this embodiment, the pressure spring 83 is a pressure applying portion that biases the adjustment bit 87 against the first positioning pin 61, which is an eccentric pin. Note that instead of the pressure spring 83, an air cylinder or the like may be used as the pressure applying portion.

As shown in FIG. 15, an input device 111 and an output device 112 are connected to the processing unit 90. The input device 111 is, for example, a keyboard or a touch panel, and allows the operator to input necessary information to the processing unit 90. The output device 112 is, for example, a monitor, and allows the operator to receive various information output from the processing unit 90.

Next, the specific procedure for adjusting the position of the tape feeder 16 by the tape feeder position adjustment device 70 (tape feeder position adjustment method) will be described using the flowcharts shown in Figures 16 and 17. In Figures 16 and 17, the circled letters "A," "B," and "C" indicate that the flow is connected at the same circled letter. Note that here, the target is set to the feed pin 55 (highest-positioned feed pin 55S) that happened to be located at the highest position at the time of image capture by the camera 77 among the feed pins 55 provided on the positioning sprocket 53.

When adjusting the position of the tape feeder 16, first, the tape feeder 16 is mounted in each mounting slot 35K of the adjustment device base 71K. When the tape feeder 16 is mounted in the mounting slot 35K, the engaged portion 51K provided on the lower part of the main body 51 is inserted between the feeder guides 41K that constitute the mounting slot 35K. This causes the first positioning pin 61 to be inserted into the first positioning hole 42K, and the second positioning pin 62 to be inserted into the second positioning hole 43K (Fig. 11(a) → Fig. 11(b)).

When the tape feeder 16 is mounted in the mounting slot 35K, the fixed portion 64 fits into the mounting hole 44K, and the connector 65 fits into the socket 45K. When the fixed portion 64 fits into the mounting hole 44K, the fixed portion 64 is connected to a fixing portion (not shown) provided inside the base 31K, and the tape feeder 16 is fixed to the base 31K. When the connector 65 engages with the socket 45K, the tape feeder 16 is electrically and signal-transmittingly connected to the base 31K (i.e., to the control unit of the tape feeder position adjustment device 70). In addition, the first positioning pin 61, which is an eccentric pin of the tape feeder 16, is inserted into the first positioning hole 42K, which is a through hole provided in each mounting slot 35K, and the second positioning hole 43, which is a non-eccentric pin of the tape feeder 16, is inserted into the second positioning hole 43, which is also a through hole (mounting process).

After the tape feeder 16 is mounted in the mounting slot 35K, the processing unit 90 first identifies the position of the tape feeder 16 to be adjusted on the adjustment device base 71K based on the detection information from the feeder insertion detection unit 91 (step ST1). After identifying the position of the tape feeder 16 to be adjusted on the adjustment device base 71K, the processing unit 90 moves the eccentric pin rotation unit 75 to a position where the adjustment bit 87 faces the first positioning hole 42K of the mounting slot 35K to which the tape feeder 16 is mounted (step ST2). Then, the camera 77 captures an image of the target (highest feed pin 55S) on the main body unit 51 (step ST3), and the measurement unit 110 measures the lateral position of the target (the target position recognition unit 95 recognizes the target position) (step ST4).

After measuring the lateral position of the target, the processing unit 90 determines in the determination unit 103 whether the target is located within a predetermined range (step ST5). If the target is located within the predetermined range, it determines that the position adjustment of the tape feeder 16 has been completed or is unnecessary, and stores the adjustment result (the fact that the adjustment has been completed) in the memory unit 104 (step ST6).

On the other hand, if the target is not located within the predetermined range in step ST5, the processing unit 90 determines that the lateral position of the tape feeder 16 needs to be adjusted, and in order to adjust the position of the tape feeder 16, the position adjustment unit 105 operates the forward/backward drive unit 74 to move the adjustment bit 87 forward (backward) (step ST7). When the tip of the adjustment bit 87 enters the first positioning hole 42K and fits into the groove portion 61M of the first positioning pin 61 (Figures 13 to 14), the position adjustment unit 105 operates the drive motor 85 to rotate the adjustment bit 87 (i.e., the first positioning pin 61, which is an eccentric pin) by the initial angle Θ1 (step ST8).

After rotating the first positioning pin 61 by the initial angle Θ1, the processing unit 90 causes the camera 77 to capture an image of the target (step ST9), and the measurement unit 110 measures the lateral position of the target (step ST10, measurement process). Then, based on the measurement result, the rotation direction determination unit 102 determines the rotation direction of the first positioning pin 61 (determines in which direction the first positioning pin 61 should be rotated) (step ST11). Here, for example, if the position of the target measured in step ST10 is closer to the center of the specified range than in step ST4, the rotation direction is determined to be the same as when it was rotated by the initial angle Θ1, and if it is farther away, the opposite direction is determined.

After the processing unit 90 has determined the rotation direction of the adjustment bit 87, it determines whether the lateral position of the target measured in step ST10 is within a predetermined range (step ST12). That is, it determines whether the lateral position adjustment of the tape feeder 16 is complete by simply rotating the first positioning pin 61 by the initial angle Θ1. If the target is located within the predetermined range, it activates the forward/backward drive unit 74 from the position adjustment unit 105 to retract (retreat) the adjustment bit 87 (step ST13), and stores the adjustment result (the fact that the adjustment has been completed) in the memory unit 104 (step ST6).

In contrast, if the processing unit 90 determines in step ST12 that the target is not located within the predetermined range, the position adjustment unit 105 rotates the adjustment bit 87 (i.e., the first positioning pin 61) by the adjustment angle Θ2 to displace the tape feeder 16 laterally, thereby adjusting the lateral position of the tape feeder 16 (step ST14: position adjustment process). Then, the camera 77 captures an image of the target (step ST15), and the measurement unit 110 measures the lateral position of the target (step ST16).

After measuring the lateral position of the target, the processing unit 90 uses the measurement result to determine whether the target is located within a predetermined range using the determination unit 103 (step ST17). If the target is found to be located within the predetermined range, no further adjustment is required, and the position adjustment unit 105 operates the forward/backward drive unit 74 to retract the adjustment bit 87 (step ST13), and stores the adjustment result (that the adjustment has been completed) in the memory unit 104 (step ST6).

On the other hand, if the processing unit 90 determines in step ST17 that the target is not located within the predetermined range, it determines whether the cumulative rotation amount (rotation angle) of the first positioning pin 61, which is an eccentric pin, exceeds a predetermined limit value (e.g., 180°) (step ST18). If the cumulative rotation amount of the first positioning pin 61 does not exceed the limit value, the process returns to step ST14 to continue the adjustment. If the cumulative rotation amount of the first positioning pin 61 exceeds the limit value, the adjustment cannot be continued any further, and the position adjustment unit 105 operates the forward/backward drive unit 74 to retract the adjustment bit 87 (step ST19), and the adjustment result (the fact that the adjustment could not be made) is stored in the memory unit 104 (step ST20).

After storing the adjustment results in the memory unit 104 in step ST6 or step ST20, the processing unit 90 ends the position adjustment work for the currently targeted tape feeder 16. Then, it is determined whether there are any tape feeders 16 for which the position adjustment work has not yet been completed (i.e., unadjusted) (step ST21), and if there are any unadjusted tape feeders 16, the process returns to step ST2 and performs position adjustment of the unadjusted tape feeders 16. On the other hand, if there are no unadjusted tape feeders 16 in step ST21, the position adjustment work for the tape feeders 16 ends.

In this embodiment, the measurement unit 110 measures the lateral position of the target on the main body unit 51 when the tape feeder 16 is attached to the attachment slot 35K, and the position adjustment unit 105 rotates the first positioning pin 61, which is an eccentric pin, from the opposite side of the tape feeder 16 through the first positioning hole 42K, which is a through hole, from the eccentric pin rotation unit 75 based on the lateral position of the target measured by the measurement unit 110, and adjusts the lateral position of the tape feeder 16 by displacing the tape feeder 16 attached to the attachment slot 35K in the lateral direction.

As described above, the camera 77 as an imaging unit constituting the measurement unit 110 images the target on the main body unit 51, and the target position recognition unit 95 recognizes the lateral position of the target based on the image of the target obtained by imaging with the camera 77. The determination unit 103 determines whether the target is located within a predetermined range, and the position adjustment unit 105 rotates the first positioning pin 61, which is an eccentric pin, by the eccentric pin rotation unit 75 when the determination unit 103 determines that the target is not located within the predetermined range.

As described above, the tape feeder position adjustment device 70 (tape feeder position adjustment method) in this embodiment measures the lateral position of the target on the main body 51 while the first positioning pin 61, which is an eccentric pin, is inserted into the through hole (first positioning hole 42K) provided in the mounting slot 35K, and based on the measured lateral position of the target, the eccentric pin rotation unit 75 rotates the first positioning pin 61 from the opposite side of the tape feeder 16 through the through hole (first positioning hole 42K) to laterally displace the tape feeder 16 mounted in the mounting slot 35K, thereby adjusting the lateral position of the tape feeder 16. Therefore, according to the tape feeder position adjustment device 70 (tape feeder position adjustment method) in this embodiment, the operator does not need to manually operate the eccentric pin (first positioning pin 61) as in the conventional method, and the tape feeder position adjustment work can be performed easily and quickly, significantly reducing the operator's labor.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above, and various modifications are possible. For example, in the above embodiment, a linear groove 61M ("-" shape) is provided at the tip 61T of the first positioning pin 61, which is an eccentric pin, but the shape of the groove 61M is arbitrary, and may be, for example, a cross shape ("+" shape), etc.

To provide a tape feeder position adjustment device and a tape feeder position adjustment method that can easily and quickly perform tape feeder position adjustment work.

REFERENCE SIGNS LIST 1 Component mounting device 16 Tape feeder 16K Component removal port 21 Feeder base 31, 31K Base portion 32, 32K Wall portion 35, 35K Mounting slot 41, 41K Feeder guide 42, 42K First positioning hole (through hole)
43, 43K Second positioning hole 51 Body portion 52 Lead-in sprocket 53 Positioning sprocket (sprocket)
54: Discharge sprocket 55: Feed pin 55S: Highest position feed pin 56: Tape transport path 61: First positioning pin (eccentric pin)
61M Groove portion 62 Second positioning pin 70 Tape feeder position adjustment device 71K Adjustment device base (tape feeder mounting portion)
72 Table device 74 Advance/retreat drive unit 75 Eccentric pin rotation unit 77 Camera (imaging unit)
81: Moving member 83: Pressure spring (pressure portion)
85 Drive motor 87 Adjustment bit 95 Target position recognition unit 101 Displacement direction detection unit 102 Rotation direction determination unit 103 Determination unit 105 Position adjustment unit 110 Measurement unit CT Carrier tape KH Feed hole BH Part

Claims (11)

A tape feeder position adjustment device that adjusts the position of a tape feeder in a lateral direction that intersects with a carrier tape transport direction in a horizontal plane, the tape feeder including a main body having a sprocket that transports a carrier tape forward, and an eccentric pin that projects forward from a front end of the main body, the tape feeder position adjustment device comprising:
a loading slot into which the tape feeder is loaded;
a through hole provided in the mounting slot, into which the eccentric pin is inserted to position the tape feeder mounted in the mounting slot in the lateral direction;
an eccentric pin rotating portion that rotates the eccentric pin from the opposite side of the tape feeder through the through hole to displace the tape feeder mounted in the mounting slot in the lateral direction;
a measurement unit that measures a position of a target on the main body in the lateral direction;
a position adjustment unit that adjusts the lateral position of the tape feeder by rotating the eccentric pin using the eccentric pin rotation unit based on the lateral position of the target measured by the measurement unit; and
A tape feeder position adjustment device comprising: The tape feeder position adjustment device according to claim 1, wherein the measurement unit includes an imaging unit that images the target, and a target position recognition unit that recognizes the lateral position of the target based on an image of the target obtained by imaging with the imaging unit, and the position adjustment unit adjusts the lateral position of the tape feeder based on the lateral position of the target recognized by the target position recognition unit. The tape feeder position adjustment device according to claim 1, wherein the target is one of a feed pin provided on the sprocket, a characteristic part of the main body, or a mark formed on the main body. The tape feeder position adjustment device according to claim 1, wherein the eccentric pin rotation unit includes an adjustment bit that engages with the eccentric pin from the opposite side of the tape feeder through the through hole, and a rotation drive unit that rotates the adjustment bit. The tape feeder position adjustment device according to claim 4, further comprising a forward/backward drive unit that moves the adjustment bit forward/backward relative to the through hole. The tape feeder position adjustment device according to claim 4, wherein the eccentric pin rotation unit includes a pressure unit that urges the adjustment bit against the eccentric pin. The tape feeder position adjustment device according to claim 1, comprising a tape feeder mounting section having a plurality of mounting slots arranged in the horizontal direction. The tape feeder position adjustment device according to claim 2, further comprising a table device that moves the imaging unit and the eccentric pin rotation unit in the lateral direction. The tape feeder position adjustment device according to claim 1, comprising: a displacement direction detection unit that detects the displacement direction of the target when the eccentric pin is rotated by the eccentric pin rotation unit; and a rotation direction determination unit that determines the direction in which the eccentric pin is to be rotated based on the displacement direction of the target detected by the displacement direction detection unit, and the position adjustment unit rotates the eccentric pin in the direction detected by the rotation direction determination unit. The tape feeder position adjustment device according to claim 1, further comprising a determination unit that determines whether the lateral position of the target measured by the measurement unit is located within a predetermined range, and the position adjustment unit adjusts the lateral position of the tape feeder by rotating the eccentric pin with the eccentric pin rotation unit when the determination unit determines that the lateral position of the target is not located within the predetermined range. A tape feeder position adjustment method for adjusting a position of a tape feeder including a main body having a sprocket for transporting a carrier tape forward, and an eccentric pin extending forward from a front end of the main body, the method comprising: adjusting a lateral position of the tape feeder in a horizontal plane intersecting a transport direction of the carrier tape, the lateral position being intersecting a horizontal plane with respect to a transport direction of the carrier tape, the method comprising the steps of:
a mounting step of mounting the tape feeder in the mounting slot by inserting the eccentric pin into a through hole provided in the mounting slot in which the tape feeder is mounted, and allowing the through hole to position the tape feeder in the lateral direction;
a measuring step of measuring a lateral position of a target on the main body while the tape feeder is attached to the attachment slot in the attachment step;
a position adjustment process for adjusting the lateral position of the tape feeder by rotating the eccentric pin from the opposite side of the tape feeder through the through hole by an eccentric pin rotation unit based on the lateral position of the target measured in the measurement process, and displacing the tape feeder in the lateral direction;
23. A method for adjusting a tape feeder position comprising:

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