JP4628909B2 - Tape feeder and surface mounter - Google Patents

Description

  The present invention relates to a tape feeder that is mounted on a surface mounter and supplies components for mounting using a tape as a carrier.

  Conventionally, a tape feeder is generally known as an apparatus for supplying components for mounting in a surface mounter. This feeder holds a tape containing parts at predetermined intervals while being wound around a reel, and feeds the tape from the reel to the part take-out part in front of the feeder while supplying the part to the part take-out part using the tape as a carrier. However, as the component is taken out by the component mounting head, the tape is fed by the tape feeding mechanism, and an electric type using a motor is known as the tape feeding mechanism ( For example, see Patent Document 1 below).

  This tape feeding mechanism has a sprocket that engages with the tape, and a motor supplied with power from an external power source rotates the sprocket to feed the tape at a predetermined pitch corresponding to the pitch of the storage components. It is configured as follows.

  Here, in reel replacement work such as tape switching in a conventional tape feeder, first remove the feeder from the surface mounter, then replace the old reel with a reel around which the new tape is wound, and then wind it around the new reel. Of the rotated tape, the drawing portion where no parts are stored is completed by performing a feeding operation (cueing) using a tape feeding mechanism.

Since the tape feeder is removed from the surface mounter, which is the power supply source, it is necessary to supply power to the feeder when performing the feeding operation. Conventionally, the power is supplied by a power connector separately prepared for the surface mounter. The tape feeding mechanism was operated by supplying
JP 2001-7593 A

  However, there is a problem that the connection work is troublesome in order to perform the feeding operation by connecting the power connector for a small sending amount. Further, providing a separate power connector to use the feeder tape feeding mechanism removed from the surface mounter has a problem that the cost of the apparatus has to be high.

  The present invention has been made to solve the above problems, and even when a feeder having an electric tape feeding mechanism is removed from the surface mounter, the tape feeding mechanism can be used without using a power source. It aims to provide a tape feeder that can be moved.

In order to solve the above-mentioned problems, a tape feeder according to the present invention engages with a reel wound with a tape containing components at predetermined intervals, and feeds the tape by a predetermined amount by engaging with a through hole of the tape. A sprocket for feeding, a drive mechanism using a motor for driving the sprocket as a drive source, an operation part formed in a rotating part of the drive mechanism, which is a hole or a concave part for manual feeding, and a side part of the tape feeder A cover member provided so as to cover the drive mechanism and having an operation window in a state of facing the operation portion, and configured to rotate the sprocket by operating the operation portion from the operation window of the cover member It is characterized by that.

According to this configuration, the drive mechanism can be driven by manually operating the operation unit from the outside. Therefore, even if the tape feeder is removed from the surface mounter and no power is supplied to the tape feeder, the tape feeder can be fed. Moreover, since the said operation part is comprised so that operation from the operation window of a cover member is possible, a manual operation of the operation part can be performed without removing a cover member, and feed operation can be performed.

  Further, it is preferable that the drive mechanism includes a reduction gear between the sprocket and the drive motor, and the operation portion is provided on the reduction gear.

  In this case, the speed reduction gear close to the drive shaft of the drive motor can be manually operated to drive the drive mechanism, so that the feed operation can be performed with a smaller force.

  In addition, it is preferable that the operation unit is provided in each of a rotating portion at a position facing the one side surface of the tape feeder and a rotating portion at a position facing the other side surface of the tape feeder.

  If it does in this way, it will become possible to manually operate an operation part from both the right-and-left both sides of a tape feeder.

In order to solve the above problems, the surface mounter of the present invention sucks a component from the component supply unit by a movable head unit and mounts the component on a substrate positioned at a predetermined position. In the surface mount machine configured as follows,
The tape feeder of any one of the said Claims 1 thru | or 4 is arrange | positioned at the said component supply part, It is characterized by the above-mentioned.

  According to this structure, even if it is a case where the tape feeder provided with the electrically driven tape feeding mechanism is removed from the surface mounter, the tape feeding mechanism can be moved without using a power source. Therefore, it is not necessary to provide a power supply for the tape feeder of the tape feeder in the surface mounter, and the surface mounter can be reduced in cost.

  According to the tape feeder of the present invention, the drive mechanism can be driven by manually operating the operation unit from the outside. Therefore, even when the tape feeder is removed from the surface mounter and no power is supplied to the tape feeder, the tape feeder can be fed. Therefore, it is not necessary to provide a power connector required to perform the tape feeding operation when the tape feeder is removed from the surface mounter, and the troublesome work of connecting to the power connector during the feeding operation is eliminated. Can do.

  Embodiments of the present invention will be described with reference to the drawings.

  1 and 2 schematically show the overall configuration of a surface mounter to which a tape feeder according to the present invention is applied.

  In these figures, a substrate conveying conveyor 2 is arranged on a base 1 of a surface mounting machine (hereinafter abbreviated as a mounting machine), and a printed circuit board 3 is conveyed on the conveyor 2 to perform a predetermined mounting. It is stopped at the work position and is held by a substrate holding means such as a push-up pin (not shown). In the following description, the direction of the conveyor 2 is the X-axis direction, the direction orthogonal to the X-axis on the horizontal plane is the Y-axis direction, and the direction orthogonal to the X-axis and the Y-axis is the Z-axis direction. .

  On both sides of the conveyor 2, component supply units 4 for supplying electronic components to be mounted on the printed circuit board 3 are provided. In these component supply units 4, multiple rows of tape feeders 4 a are arranged in the X-axis direction. Each tape feeder 4a is detachably mounted with a reel wound with a postscript tape that stores and holds small chip components such as ICs, transistors, capacitors, etc., from this reel to the component take-out section at the tip of the feeder. A component stored in the tape is picked up by a head unit 5 described later while intermittently feeding out the tape. The configuration of the tape feeder 4a will be described in detail later.

  Above the base 1, a component mounting head unit 5 is further provided. The head unit 5 is movable in the X-axis direction and the Y-axis direction within a certain region so that the components can be sucked from the component supply unit 4 and mounted on the printed circuit board 3.

That is, the support member 11 of the head unit 5 is arranged on the base 1 so as to be movable on the fixed rail 7 in the Y-axis direction, and the head unit 5 extends along the guide member 14 in the X-axis direction on the support member 11. It is supported so that it can move. The support member 11 is screwed to the ball screw 8 driven by the Y-axis servo motor 9 so that the support member 11 is moved in the Y-axis direction while being driven by the X-axis servo motor 15. When the head unit 5 is mounted on the ball screw 13, the head unit 5 is configured to move in the X-axis direction.

  The head unit 5 is mounted with a plurality of mounting heads 20 for sucking components and mounting them on the printed circuit board 3. In this embodiment, the four mounting heads 20 are arranged in a row in the X-axis direction. It is mounted in a state arranged in.

  These mounting heads 20 are connected to an elevating mechanism using a Z-axis servomotor (not shown) as a drive source and connected to a rotating mechanism using an R-axis servomotor (not shown) as a drive source, respectively. By these mechanisms, the head unit 5 is driven in the vertical direction (Z-axis direction) and around its own axis (referred to as the R-axis direction).

  Further, a nozzle 21 for sucking components is provided at the tip of each mounting head 20. Each nozzle 21 is connected to a negative pressure supply means via a valve or the like (not shown). When taking out a part from the tape feeder 4a, the negative pressure is supplied to the tip of the nozzle 21 to attract the part. To be done. The nozzle 21 is detachably attached to the mounting head 20, and other nozzles 21 housed in a nozzle station (not shown) on the base 1 as necessary, that is, the tip shape and the like. The nozzles 21 are automatically exchanged with other nozzles 21 having different sizes.

  On the base 1, a component recognition camera 17 is further provided for recognizing an image of the suction state of the component by each mounting head 20. The component recognition camera 17 is provided between the conveyor 2 and the front side (lower side in FIG. 1) component supply unit 4, and the head unit 5 is arranged at a predetermined imaging position above the component recognition camera 17. When this is done, the suction component by each mounting head 21 is imaged from below.

  With the above configuration, in the mounting machine, components are mounted on the printed circuit board 3 as follows.

  First, the head unit 5 moves above the component supply unit 4, and components are removed from the tape feeder 4 a by each mounting head 20. Specifically, the predetermined mounting head 20 to which the component is to be sucked descends to attract the component, and further rises in a state of attracting the component, thereby picking up the component from the tape feeder 4a. At this time, if possible, the components are simultaneously taken out by the plurality of mounting heads 20.

  When the suction of the components by all the mounting heads 20 is completed, the head unit 5 moves above the component recognition camera 17, and each suction component is imaged, so that the suction state of each component is determined based on the imaging result. Be examined. Then, after the head unit 5 is moved onto the printed circuit board 3, the mounting heads 20 are moved up and down while the head unit 5 is moved sequentially to a predetermined component mounting point. Implemented above.

  3 and 4 schematically show the configuration of the tape feeder 4a. FIG. 3 is a view showing a state before the cover members 27 and 28 are attached, and FIG. 4 is a view showing a state after the cover members 27 and 28 are attached.

  As shown in the figure, the tape feeder 4a includes a box-type feeder main body 25 and a plate-like reel support 26 connected to the feeder main body 25, and the front end side, that is, the feeder main body. In a state where 25 is directed to the conveyor 2 side, it is detachably fixed to a feeder mounting base 6 provided in the component supply unit 4. In the following description, left and right are defined with reference to a case where the feeder main body 25 side (front end side) is the front and viewed from the reel 31 side. 3A shows a right side view of the tape feeder 4a, and FIG. 3B shows a left side view thereof.

  The feeder main body 25 accommodates therein a tape feeding mechanism and the like configured by a tape feeding sprocket 50 and a drive mechanism for driving the sprocket 50. As will be described later, the drive mechanism includes a motor 42 and gears 42a, 53a to 53g that transmit the rotation of the motor 42. And the feeder main-body part 25 of the tape feeder 4a is integrally formed by die-casting, The right side opening part 25b is formed in the right side surface 25a, and the left side opening part 25d is formed in the left side surface 25c.

  A right opening 25b is formed on the right surface 25a. As shown in FIG. 3A, the right opening 25b is provided so as to face the gears 53b to 53f and the like, and the operator can rotate the gears 53b to 53f via the right opening 25b. An opening is formed so as to be possible. Further, the right cover member 27 can be fitted into the right opening 25b. In a state where the right cover member 27 is fitted, only the second reduction gear 53c can be seen from the operation window 27a provided in the right cover member 27, and the operator can rotate the second reduction gear 53c. (See FIG. 4A).

  The left surface 25c is provided with a left opening 25d on the left surface 25c in the same manner as the right surface 25a. As shown in FIG. 3B, the motor 42, the first reduction gear 53a, which will be described later, and the sprocket 50 can be faced from the left opening 25d provided on the left surface 25c. The left opening 25d is formed so that an operator can rotate the drive shaft of the motor 42, the first reduction gear 53a, and the sprocket 50. Further, a left cover member 28 can be fitted into the left opening 25d. When the left cover member 28 is fitted, the motor 42 is concealed and an operation window 28a provided in the left cover member 28 is used for the first deceleration. Only the gear 53a can be seen, and the operator can rotate the first reduction gear 53a (see FIG. 4B).

  A reel 31 having a tape 32 wound around its rear end portion (left end portion in FIG. 3A) is rotatably held by the reel support portion 26, and the feeder main body portion 25 in front of the reel 31 is forwarded. The tape 32 is led out.

  The tape 32 is for storing and holding small pieces of components such as ICs, transistors and capacitors at predetermined intervals, here at regular intervals. As shown in FIG. And a cover tape 34 to be worn. The carrier tape 33 has hollow component storage portions 33a opened upward at predetermined intervals, here, at regular intervals, and components such as ICs are stored in the respective component storage portions 33a. Further, on one side of the carrier tape 33, engagement holes 33b penetrating along the edge in the tape thickness direction are provided at regular intervals. On the other hand, the cover tape 34 is bonded to the upper surface of the carrier tape 33 so as to cover a portion where the component storage portion 33a is opened.

  As shown in FIG. 3, a guide portion 35 extending in the front-rear direction (Y-axis direction) is provided on the upper portion of the feeder body portion 25, and a tape guide portion 36 is provided so as to cover the upper portion. The tape 32 led out from 31 is guided below the tape guide portion 36 along the guide portion 35.

  A component take-out part 37 is provided at the front end of the feeder main body 25. The component take-out portion 37 is a portion where components are picked up by the mounting head 20. In this portion, the tape 32 guided along the guide portion 35 is moved upward via the notch portion 36 a of the tape guide portion 36. The cover tape 34 is exposed and folded back along the edge of the cutout portion 36a while being peeled off from the tape 32, whereby the component storage portion 33a of the tape 32 (carrier tape 33) is opened upward. The component can be taken out by the mounting head 20.

  The drive mechanism gives a rotational driving force to the sprocket 50. The motor 42 of this drive mechanism is formed by a flat DC motor or a stepping motor, and the rotating shaft 42b is rotatably supported by the feeder main body 25. On the left side of the tape feeder 4a, the gear 42a is fixed to the rotating shaft 42b of the motor 42, and a large-diameter first reduction gear 53a is engaged with the gear 42a.

  Further, on the right side of the tape feeder 4a, a small-diameter gear 53b coaxial with the first reduction gear 52a, and gears 53c and 53d for transmitting the rotational driving force of the gear 53b to the tape feeding mechanism are disposed. The sprocket 50 is connected to the gear 53d.

  The gear 53a (first reduction gear 53a) has six manual feed holes w penetratingly formed on the surface of the left surface 25c facing the left opening 25d on the left surface 25c. The manual feed hole w is large enough to allow a finger to be inserted, and the sprocket 50 can be rotated through the gears 53b, 53c, 53d by hooking and rotating the finger into the manual feed hole w. . The manual feed hole w can be operated from the operation window 28a of the left cover member 28, and the first reduction gear 53a is rotated using the manual feed hole w even when the left cover member 28 is mounted. be able to. The manual feed hole w corresponds to the operation unit in the present invention.

  Similarly, the gear 53c (second reduction gear) is also formed with a manual feed hole w, and the sprocket 50 is rotated via the gear 53d by rotating the manual feed hole w with a finger. Can do. Further, the second reduction gear 53c can be rotated by hooking the finger into the manual feed hole w and rotating it even in a state where the right cover member 27 is mounted, even though the rotation can be performed from the operation window 27a.

  The sprocket 50 is disposed below the component take-out portion 37, and a part of the outer edge thereof faces the component take-out portion 37 through an opening formed in the inner ceiling portion of the feeder main body 25, and its teeth Is engaged with the tape 32 by being fitted into the engagement hole 33b. Since the sprocket 50 is connected to the gear 53d, when the sprocket 50 is rotationally driven by the feed motor 42, the tape 32 is pulled out from the reel 31 along with this rotation, and corresponds to the pitch of the component storage portion 33a. The tape 32 is intermittently sent out at a constant pitch.

  Further, a take-off mechanism for peeling the cover tape 34 from the tape 32 (carrier tape 33) is provided behind the tape feed mechanism in the feeder main body 25. In this embodiment, the take-up mechanism is driven by the motor 42, and the take-off gear pair 56a and 56b, and the gear 53g and the gear 53f that transmit the rotational driving force of the motor 42 and the motor 42 are provided. , A gear 53e, a gear 53b (gear 53a), and the like. The cover tape 34 peeled off from the tape 32 by the notch 36a is guided between the take-off gear pairs 56a and 56b, and the take-off gear pair 56a is actuated by the operation of the take-off motor 42 when supplying parts. 56b are driven to rotate, and the cover tape 34 is peeled off from the carrier tape 33 by the pulling force (rotational force).

  In the present embodiment, the gears 53a to 53g set the reduction ratio so that the feed speed of the tape feed mechanism and the take-up speed of the take-up mechanism are optimum for peeling the tape 32, respectively. That is, the feed speed of the tape feed mechanism is set by the gears 53d, 53c, 53b (53a) coaxially attached to the sprocket 50, and the feed speed of the take-up mechanism is the gear 53g meshing with the take-up gear 56a. , 53f, 53e, 53b (53a).

  Although not shown in detail, a control circuit for driving and controlling these motors 42 is integrally incorporated in the motor board, and the driving of the motors 42 is controlled by the control circuit during the mounting operation. Thus, the parts are continuously supplied by the tape feeder 4a.

  According to the tape feeder 4a configured as described above, the feeding operation of the tape 32 can be manually performed during the tape replacement work. That is, in the tape replacement work, the tape feeder 4a is removed from the mounting machine, and the power supplied to the tape feeder 4a is shut off. In that state, when the left and right openings 25b and 25d of the left and right surfaces 25a and 25c or the cover members 27 and 28 are provided, the operation part of the drive mechanism is operated from the respective operation windows 27a and 28a. The feeding operation of the tape 32 is performed. In other words, the reduction gear 53a (or 53c) is rotated by hooking a finger into the manual feed hole w provided in the second reduction gear 53c or the first reduction gear 53a through the left and right openings 25b and 25d or the operation windows 27a and 28a. As a result, the rotational driving force is finally transmitted to the sprocket 50 via the gears 53a to 53d, and the sprocket 50 rotates. The rotation of the sprocket 50 causes the tape 32 to be intermittently fed out at a constant pitch while being pulled out from the reel 31. Then, after confirming that the tape 32 has been fed to a desired position, the feeding of the tape 32 stops if the manual feeding operation is stopped. With the above operation, it is possible to manually feed out the portion of the tape 32 wound around the new reel 31. Accordingly, a power source for performing the feeding operation of the tape 32 becomes unnecessary, so that it is free from troublesome power supply connection work for the feeding operation.

  In the above embodiment, the manual reduction hole w is provided in the first reduction gear 53a and the second reduction gear 53c, but it is not necessary to provide them in both, and it may be provided only in the first reduction gear 53a. In this case, the first reduction gear 53a is installed at a position closer to the rotating shaft 42b of the motor 42 than the second reduction gear 53c, which is preferable in that the load is light and the feeding operation is easy. Further, the manual feed hole w is provided in the first reduction gear 53a and the second reduction gear 53c, which is preferable in that the load of the rotation operation is reduced due to the reduction ratio, but it is provided in any of the other gears 53. Also good.

Further, although the manual feed hole w is formed through the surface of the gear 53 as the operation portion, the present invention is not limited to this, and any configuration may be used as long as it can manually rotate. For example, the concave portion w (dent w) that does not penetrate may be configured such that the feeding operation is performed by rotating the gear 53 by hooking with a finger from the outside.

  In the above-described embodiment, the operation unit is provided in the gear 53, but the sprocket 50 or the rotation shaft 42b of the motor 42 may be provided. For example, when the sprocket 50 is provided, similarly to the operation portion provided in the gear 53, a manual feed hole w that is formed to penetrate the surface of the sprocket 50 or a recess w that does not penetrate may be provided.

It is a top view which shows the surface mounting machine with which the tape feeder which concerns on this invention is mounted. It is a front view which shows a surface mounting machine. It is a side view which shows the state which removed the cover member of the tape feeder which concerns on this invention, (a) is a right view, (b) is a left view. It is a side view which shows the state which attached the cover member of the tape feeder which concerns on this invention, (a) is a right view, (b) is a left view. It is a perspective view which shows the structure of the tape used with a tape feeder.

Explanation of symbols

4a Tape feeder 25 Feeder body 25a Right surface 25b Right opening 25c Left surface 25d Left opening 27 Right cover member 27a Operation window 28 Left cover member 28a Operation window 42 Motor 42a Gear 42b Rotating shaft 50 Sprocket 53a First reduction gear 53c Second reduction gear

Claims (4)

A reel wound with tape containing parts at predetermined intervals;
A sprocket for feeding for engaging the through hole of the tape and feeding the tape by a predetermined amount;
A drive mechanism using a motor for driving the sprocket as a drive source;
An operation portion provided in a rotating portion of the drive mechanism, which is a hole or a concave portion for manual feeding;
A cover member provided on the side surface portion of the tape feeder so as to cover the drive mechanism, and having an operation window in a state of facing the operation portion;
A tape feeder configured to be able to rotate the sprocket by operating the operation portion from an operation window of the cover member .   The tape feeder according to claim 1, wherein the drive mechanism includes a reduction gear between the sprocket and the drive motor, and the operation unit is provided on the reduction gear. 2. The operation unit is provided at each of a rotating portion of the drive mechanism that faces the one side of the tape feeder and a rotating portion that faces the other side of the tape feeder. Or the tape feeder of 2. In a surface mounter configured to adsorb a component from a component supply unit by a movable head unit and mount the component on a substrate positioned at a predetermined position,
  A surface mounting machine, wherein the tape feeder according to any one of claims 1 to 3 is disposed in the component supply unit.

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