JP4938623B2 - Surface mount machine - Google Patents

Description

  The present invention relates to a surface mounter for mounting electronic components on a substrate.

  Conventionally, an electronic component such as an IC chip is adsorbed from an electronic component supply unit by a movable head unit having an adsorption head, and transferred to a fixed printed board by being carried to a predetermined stop position by a conveyor or the like. A surface mounter (hereinafter referred to as “mounter”) that is mounted at a predetermined position on a printed circuit board is known. In such a mounting machine, a tape feeder is often used as a device for supplying electronic components.

  A tape feeder stores electronic components such as IC chips held on a tape at predetermined intervals, wound around a supply reel, and picks up the electronic components by picking up the electronic components when they are picked up. The head is supplied up to the suction position of the head. The empty tape after the electronic components are adsorbed is guided to the collection box by the tape shooter and finally discharged to the collection box.

  Since this empty tape is curled due to wrapping when it is stored in the reel, the empty tape may become entangled inside the tape shooter due to entanglement with the empty tape and other parts of the adjacent tape feeder. there were. When the empty tape is clogged in this way, normal feeding of the empty tape is hindered, resulting in a machine trouble such as the empty tape protruding upward from the end of the tape feeder and interfering with the nozzle of the head. In order to avoid such a machine trouble, it has been proposed to provide a conveyor on the tape shooter (see, for example, Patent Document 1). In this patent document 1, a conveyor unit 43 including a belt 46 that forms the bottom surface of the gently inclined portion 42 in the vicinity of the collection box 12 of the tape shooter 40 is provided, and the belt 46 is driven to rotate to force the empty tape 25. It is described that machine troubles can be avoided by discharging automatically.

JP 2000-13095 A

  However, in the conventional method, since the conveyor unit 40 is provided in the vicinity of the collection box at the back of the tape shooter, for example, when an empty tape is entangled near the discharge end of the tape feeder, that is, near the entrance of the tape shooter, In some cases, the empty tape does not reach the conveyor unit 40 and is jammed. In addition, the empty tape tends to move to the upper surface side of the tape shooter due to winding, but if the conveyor unit 40 is provided on the bottom surface side of the tape shooter as in the prior art, the empty tape and the belt 46 are less likely to contact, The empty tape could not be delivered effectively, and the empty tape could get stuck inside the tape shooter. Thus, conventionally, empty tapes are clogged at the inside and inside of the tape shooter, making it difficult to avoid machine troubles.

  Therefore, an object of the present invention is to provide a surface mounter that can reliably avoid machine troubles.

In order to solve the above-described problems, the surface mounter according to the present invention sucks and transfers a component from the component supply unit by a head that is relatively movable with respect to the substrate, and mounts the component on the substrate. A tape feeder that supplies electronic components to the pickup position of the head by intermittently feeding the tape from the upper part of the reel around which the tape holding the electronic components is wound in the component supply unit. A recovery box that is provided below the tape feeder and is sent out from the tape feeder and from which the cover tape is peeled off and held and picks up the electronic tape that has been picked up is collected, and the empty tape delivery end of the tape feeder A tape shooter that is arranged from the vicinity to the vicinity of the collection box and guides empty tape to the collection box, and a tape feed in the tape shooter Is disposed at a position substantially opposite the delivery end of a derivation device for guiding the empty tape inside the tape chute, tape chute, at least provided with oppositely disposed pair of guide upward and downward, the upper side The guide is composed of a conveyor provided with a belt tuned to a pulley disposed in the vicinity of the delivery end and in the vicinity of the collection box, and a conveyor motor that rotates the pulley, and the conveyor faces the lower guide. The belt is moved in the direction of the collection box from the delivery end, and the lead-out device is characterized in that a portion substantially facing the delivery end of the tape feeder is moved downward .

In the surface mounter, the derivation device may be configured by a roller that is rotationally driven by a motor .

  According to the present invention, since the lead-out device is disposed at a position substantially opposite to the feeding end of the tape feeder in the tape shooter, the empty tape sent from the sending end is forcibly guided to the back of the tape shooter. It becomes possible to prevent the empty tape from being entangled in the vicinity of the entrance of the tape shooter, and as a result, machine trouble can be avoided reliably.

  In addition, according to the present invention, since the upper guide is constituted by the conveyor, the empty tape guided into the tape shooter is forcibly guided to the collection box, so that the empty tape is entangled inside the tape shooter. As a result, machine troubles can be reliably avoided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Surface mount machine]
As shown in FIG. 1, the surface mounter 1 according to the present embodiment is provided on a base 11 along a longitudinal direction (X direction) of the base 11 having a substantially rectangular shape in plan view and the base 11. A conveyor 12 that conveys the printed circuit board P, a component supply unit 13 that is provided on the bases 11 on both sides of the conveyor 12 and that is provided with a plurality of tape feeders 2 that supply electronic components adjacent to each other; A control device 15 for controlling the operation of a head mechanism 14 provided above the table 11 and provided with a component suction nozzle 141 and a surface mounter disposed in the base 11 or at a position separated from the base 11. And have.

  Here, the component supply unit 13 includes a mounting base 131 arranged in parallel with the conveyor 12 and a plurality of tape feeders for supplying various components fixed in parallel to the mounting seats 131 and positioned in the respective positions. 2, a recovery box 3 provided below the mounting base 131, and a tape shooter 4 provided between the conveyor 12 and the mounting base 131 and the recovery box 132.

<Tape feeder>
The tape feeder 2 includes a box-shaped feeder main body portion 21 flat in the width direction (X direction) and a plate-like reel support portion 22 connected to the feeder main body portion 21 at the front and rear sides. That is, the feeder main body 21 is set on the mounting base 131 of the component supply unit 13 with the feeder main body 21 facing the conveyor 12, and is detachably fixed to the mounting base 131 by clamping means (not shown).

  A reel 31 having a tape 32 wound around its rear end portion is rotatably held by the reel support portion 22, and the tape is led out from the reel 31 to the front feeder main body portion 21.

  The tape 32 is for storing and holding small electronic components such as ICs, transistors, capacitors, etc. at regular intervals, and is composed of a carrier tape 33 and a cover tape 34 affixed thereto. Yes. The carrier tape 33 has hollow product storage portions opened upward at regular intervals, and electronic components such as ICs are stored in the respective component storage portions. Further, on one side of the carrier tape 33, engagement holes (not shown) 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 opens.

  A guide portion 23 extending in the front-rear direction (Y direction) is provided on the upper portion of the feeder main body portion 21 and a cover member 24 is provided so as to cover the upper portion, and the tape 32 led out from the reel 31 is A guide member 23 is guided below the cover member 24.

  A component take-out portion 25 is provided at the front end portion of the feeder main body portion 21. The component take-out portion 25 is a portion for picking up a component by the nozzle 141 of the head mechanism 14, and in this portion, the tape 32 guided along the guide portion 23 opens an opening portion 24 a formed in the cover member 24. The cover tape 34 is peeled off from the tape 32 and folded back along the edge of the opening portion 24a. As a result, the component storage portion is opened upward, and the component by the head mechanism 14 is removed. Extraction is possible.

  A tape feeding mechanism 26 and a take-up mechanism 27 for the cover tape 34 are provided inside the feeder main body 21.

  The tape feed mechanism 26 feeds the tape 32 along the guide portion 23, and includes a sprocket 261 disposed below the component take-out portion 25, a feed motor (not shown) as a drive source, and the motor. And a gear (not shown) that is integrally coupled to the sprocket 261 and meshes with the drive gear.

  The sprocket 261 has a part of its outer edge facing the guide part 23 through an opening formed in the inner ceiling part of the feeder main body 21, and a part of its pin (tooth) is the carrier tape at the opening 24a. The tape 32 is engaged with the engagement hole 33. Accordingly, when the feed motor is operated, the sprocket is rotated along with this, and the tape 32 is fed toward the component take-out portion 25 while pulling out the tape from the reel 31 by this rotation.

  The cover tape 34 is peeled off from the take-up mechanism 27 and the tape 32 (carrier tape 33). The feeder main body 21 is provided behind the tape feeding mechanism 26, that is, on the reel support portion 22 side. Such a take-off mechanism 27 is provided with take-off gear pairs 271 and 272 and take-off motors (not shown) for driving the take-off gear pairs 271 and 272, and is peeled off from the tape 32 by the opening portion 24a described above. The covered cover tape 34 is guided between the take-off gear pairs 271 and 272. Thereby, at the time of component supply, the take-off gear pairs 271 and 272 are driven to rotate by the operation of the take-off motor, and the cover tape 34 is peeled off from the carrier tape 33 by the take-up force (rotational force).

<Tape Shooter 4>
The tape shooter 4 is composed of a duct that is inclined from the upper opening 4a near the tip (feeding end) of the tape feeder 2 to the lower opening 4b above the collection box 132. A vertical guide 41 that extends along the direction (X direction) in which the tape feeders 2 are arranged between them and extends substantially vertically downward, and an inclined guide that extends obliquely downward above the collection box 132 from the lower end of the vertical guide 41. 42 and a conveyor unit 43 disposed above the inclined guide 42 so as to face each other.

  A roller 41 a that functions as a lead-out device is provided at a position that is substantially opposite to the tip of the tape feeder 2 of the vertical guide 41. This roller 41a has a rotation axis along the X direction, and is a direction in which the carrier tape 33 discharged from the front end portion of the tape feeder 2 is led downward vertically by a motor (not shown) (clockwise direction in the case of FIG. 2). ).

  The conveyor unit 43 is disposed below the feeder main body 21 of the tape feeder 2 as a whole. Such a conveyor unit 43 includes an upper pulley 43a that is disposed at a position horizontally spaced from the lower end of the vertical guide 41, that is, below the front end of the tape feeder 2, and has a rotation axis along the X direction. A lower pulley 43b having a rotation axis along the X direction and disposed above the box 132, that is, at a position vertically spaced from the lower end of the inclined guide 42, and a belt 43c tuned to the upper pulley 43a and the lower pulley 43b. And a conveyor motor (not shown) that rotates at least one of the upper pulley 43a and the lower pulley 43b. The conveyor unit 43 drives the conveyor motor to move the belt 43c on the side facing the inclined guide 42 from above to below, that is, from the upper opening 4a to the lower opening 4b.

[Operation of surface mounter]
Next, the operation of the surface mounter 1 according to the present embodiment will be described.

  First, the printed circuit board P is carried into the surface mounting machine 1 by the conveyor 12 and fixed at a predetermined mounting position. Next, the head mechanism 14 is moved by the head mechanism 14, and an electronic component is picked up by the component extraction unit 25 of the tape feeder 2 that supplies a predetermined electronic component.

  When an electronic component is picked up, the head mechanism 14 passes the electronic component over a camera (not shown), and the camera recognizes the position and orientation of the electronic component. Based on the recognition result, the head mechanism 14 corrects the position and orientation at the time of mounting on the printed circuit board P, and the electronic component is mounted at a predetermined position on the printed circuit board P.

  While such mounting operations are sequentially performed, the carrier tape 33 (hereinafter referred to as empty tape 33a) after picking up electronic components is discharged from each tape feeder 2 and guided to the collection box 132 by the tape shooter 4. It is burned.

  At this time, the empty tape 33a discharged from the tape feeder 2 is sent out in the horizontal direction and collides with the roller 41a. Then, as shown in FIG. 2, since the roller 41a is rotating clockwise, the empty tape 33a is forcibly sent out vertically downward. As described above, according to the present embodiment, by providing the roller 41a at a position substantially opposite to the front end (feeding end) of the tape feeder 2 in the horizontal direction, the empty tape 33a just discharged from the tape feeder 2 is forced. Therefore, the tape taper 4 is sent out to the back of the tape shooter 4, so that the empty tape 33a can be prevented from being entangled in the vicinity of the entrance of the tape shooter 4, and as a result, a machine trouble can be avoided reliably.

  The empty tape 33a fed vertically downward by the roller 41a is wound around the reel 31 when wound around the reel 31 as it is fed vertically downward, that is, on the tape feeder 2 side. And collide with the belt 43 of the conveyor unit 43. Then, as shown in FIG. 2, the belt 43 on the side that collides with the empty tape 43 a moves downward from above, so that the empty tape 33 a is forcibly sent downward and guided to the collection box 132. Thus, according to the present embodiment, by disposing the conveyor unit 43 above the inclined guide 42 of the tape shooter 4, the empty tape 33 a discharged from the tape feeder 2 and guided to the back of the tape shooter 4. Is forcibly sent out toward the collection box 132, so that it is possible to prevent the empty tape 33a from being entangled inside the tape shooter 4, and as a result, machine troubles can be reliably avoided.

  In this embodiment, the case where the roller 41a is used as the derivation device has been described as an example. However, if the empty tape 33a in the vicinity of the upper opening 4a of the tape shooter 4 can be guided into the tape shooter 4, the derivation is performed. The apparatus applied to the apparatus is not limited to the roller 41a, and various apparatuses such as a conveyor, a roller having a cross-sectional shape other than a circle, and a fan can be applied.

  The present invention can be applied to various apparatuses using electronic components held on a tape such as a surface mounter.

It is a top view which shows the structure of a surface mounter. It is a side view which shows the structure of a tape feeder.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Surface mounter, 2 ... Tape feeder, 4 ... Tape shooter, 4a ... Upper side opening part, 4b ... Lower side opening part, 11 ... Base, 12 ... Conveyor, 13 ... Component supply part, 14 ... Head mechanism, 15 ... Control device, 21 ... Feeder body part, 22 ... Reel support part, 23 ... Guide part, 24 ... Cover member, 24a ... Opening part, 25 ... Part take-out part, 26 ... Tape feed mechanism, 27 ... Take-off mechanism, 31 ... Reel, 32 ... tape, 33 ... carrier tape, 33a ... empty tape, 34 ... cover tape, 41 ... vertical guide, 41a ... roller, 42 ... tilt guide, 43 ... conveyor unit, 43a ... upper pulley, 43b ... lower pulley, 43c ... belt, 131 ... mounting base, 132 ... collection box, 141 ... nozzle, 261 ... sprocket, 271, 272 ... gear pair.

Claims (2)

A surface mounter that sucks and transfers a component from a component supply unit by a head that can move relative to the substrate, and mounts the component on the substrate,
A tape feeder that supplies the electronic component to the pickup position of the head by intermittently feeding the tape from an upper part of a reel wound with a tape holding the electronic component in the component supply unit;
A recovery box that is provided below the tape feeder, is sent out from the tape feeder, and collects an empty tape from which the electronic component that has been held by peeling the cover tape from the tape is collected;
A tape shooter that is disposed from the vicinity of the delivery end of the empty tape of the tape feeder to the vicinity of the recovery box, and guides the empty tape to the recovery box;
A lead-out device that is disposed at a position substantially opposite to the feeding end of the tape feeder in the tape shooter and guides the empty tape into the tape shooter ;
The tape shooter includes at least a pair of guides arranged to face the upper side and the lower side,
The upper guide is composed of a conveyor provided with a belt tuned to a pulley disposed in the vicinity of the delivery end and in the vicinity of the collection box, and a conveyor motor for rotating the pulley,
The conveyor moves the belt facing the lower guide from the delivery end toward the collection box,
The surface mounter is characterized in that in the lead-out device, a portion of the tape feeder that is substantially opposite to the delivery end moves downward . The surface mounting machine according to claim 1 , wherein the derivation device includes a roller that is rotationally driven by a motor .

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