JP3840968B2 - Tape feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tape feeder that pitches an electronic component held on a tape and supplies the electronic component to a pickup position of an electronic component mounting apparatus.
[0002]
[Prior art]
In an electronic component mounting apparatus, a method using a tape feeder is known as a method for supplying an electronic component to a pickup position of a nozzle of a transfer head. In this method, a tape for holding an electronic component is pulled out from a supply reel, and pitch-fed in synchronization with the mounting timing of the electronic component to be supplied to a nozzle. The tape is generally supplied in a state of being wound around a supply reel, and the tape is introduced into the main body from the rear end portion of the elongated main body having a tape feeding mechanism for pitch-feeding the tape.
[0003]
By the way, as a method for arranging the supply reel, a method of arranging the supply reel separately from the main body is employed instead of the method of mounting the supply reel on the reel holder provided integrally with the main body. Yes. According to this method, it is not necessary to remove the main body every time the reel is replaced, and the reel can be replaced while continuing the mounting operation by adding the tape already mounted and the newly supplied tape. There are advantages.
[0004]
[Problems to be solved by the invention]
However, when the above-described reel-by-reel arrangement method is applied to a conventional tape feeder, the tape may be damaged when the tape is handled during the reel replacement operation. That is, since the reel is arranged separately from the main body, the tape drawn from the supply reel is directly introduced into the tape inlet of the main body as it is. At this time, if an external force is applied to the tape for some reason, such as when the supply reel is mounted in a fixed position or when the tape is pulled out, the tape is likely to be bent at the tape inlet, which requires careful handling. It was.
[0005]
Then, an object of this invention is to provide the tape feeder which can prevent the damage of the tape in a tape inlet.
[0006]
[Means for Solving the Problems]
The tape feeder according to claim 1 is a tape feeder that supplies an electronic component to a pickup position of an electronic component mounting apparatus by pitch-feeding a tape holding an electronic component, and includes a tape feeding mechanism that pitch-feeds the tape. A main body provided, a tape inlet for introducing the tape supplied from a tape supply unit provided at a rear end of the main body separately from the main body into the main body, and a tape inlet of the tape inlet A flexible guide member that guides the tape that is provided on the outside and that is fed from the tape supply unit, and the guide member is deformed by a downward load and / or a lateral load transmitted through the tape. This prevents a concentrated load from being applied to a specific part of the tape.
[0007]
According to the present invention, the flexible guide member for guiding the tape sent from the tape supply unit is provided outside the tape introduction port, and the guide member is subjected to a downward or lateral load transmitted through the tape. By causing the bending deformation, it is possible to prevent a concentrated load from being applied to a specific portion of the tape and prevent the tape from being damaged.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of an electronic component mounting apparatus to which a tape feeder according to an embodiment of the present invention is mounted, FIG. 2 is a side view of the tape feeder according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is an explanatory view of the mechanism of the tape feeder of the embodiment, FIG. 4 is an explanatory view of the shape of the tape guide of the tape feeder of the embodiment of the present invention, and FIG. 5 is a functional description of the tape guide of the tape feeder of the embodiment of the invention. FIG.
[0009]
First, an electronic component mounting apparatus will be described with reference to FIG. In FIG. 1, the electronic component mounting apparatus 1 includes two mounting stages 2. The substrate 4 is carried into the upstream mounting stage 2 from the substrate carry-in port 3 provided on the side surface. An electronic component picked up from the component supply unit 5 is mounted on the substrate 4 positioned on a conveyance path (not shown).
[0010]
A plurality of tape feeders 8 are attached to the component supply unit 5. The tape feeder 8 has a plurality of units arranged in parallel on a feeder base 6 provided in the component supply unit 5, and pulls out a tape holding electronic components from a supply reel 9 (tape supply unit) mounted on the carriage 7. To feed the pitch. As a result, the electronic component is supplied to the pickup position of the electronic component on each mounting stage 2.
[0011]
Next, the overall structure of the tape feeder 8 will be described with reference to FIG. As shown in FIG. 2, the tape feeder 8 is mounted on the upper surface of the feeder base 6 along the lower surface of the main body portion 8 a, and a locking portion 8 b provided projecting downward from the main body portion 8 a is attached to the feeder base 6. The tape feeder 8 is fixed by engaging with the end. The locking portion 8b has a built-in connector for connecting electrical wiring such as a power source and control signal of the tape feeder 8 to the electrical circuit of the electronic component mounting apparatus 1, and the tape feeder 8 is attached to the feeder base 6. As a result, the electrical connection is completed.
[0012]
In FIG. 2, the sprocket 11 is arrange | positioned at the front-end part (right side in FIG. 2) of the tape feeder 8. In FIG. The teeth of the sprocket 11 mesh with a tape feed hole 10d (see FIG. 3) provided on the tape 10 at a constant pitch, and the sprocket 11 is rotated by the tape feed mechanism 12 so that the top tape is placed on the base tape 10b. The tape 10 having the structure 10a is affixed to the pitch. By this tape feeding, the tape 10 is pulled out from the supply reel 9. The drawn tape 10 is guided by a tape guide 16 provided at the rear end portion of the tape feeder 8, guided into the main body portion 8a from the tape introduction port 8c, and fed forward along the tape feed path 8d.
[0013]
The tip of the tape feeder 8 is a position for picking up electronic components by the transfer head 17, and the tape 10 that has been fed is pitch-fed under the pressing member 13 provided on the top surface of the tip. In the middle of this pitch feed, the electronic component 18 held in the recess 10 c of the base tape 10 b is picked up by the transfer head 17 through the opening 13 a provided in the pressing member 13. Prior to picking up the electronic component 18, the top tape 10 a is peeled from the upper surface of the base tape 10 b, folded back, and stored in the tape storage container 15 by the top tape feeding mechanism 14.
[0014]
Next, the tape feeding mechanism 12 and the top tape feeding mechanism 14 will be described with reference to FIG. In FIG. 3, the sprocket 11 that pitch-feeds the tape 10 is rotationally driven by a motor 20. The sprocket 11 performs an intermittent rotation operation corresponding to the pitch feed operation, and the rotation stop position during the intermittent rotation is mechanically positioned by the positioning mechanism 23. Pins 11 a are provided at a constant pitch on the outer periphery of the sprocket 11, and tape feeding is performed by the sprocket 11 rotating with the pins 11 a fitted in holes 10 d provided in the tape 10.
[0015]
A peeling member 13b is disposed in front of the pickup position by the transfer head 17, and the top tape 10a is peeled by the peeling member 13b from the upper surface of the tape 10 fed forward (rightward in the drawing) and folded back. It is. The folded top tape 10a is fed into the tape container 15 by the rotary feed members 33 and 34 of the top tape feed mechanism 14. The rotation of the rotation feed members 33 and 34 is performed by transmitting the rotation of the motor 30 to the rotation feed member 34 via the bevel gear 31 and the transmission gear member 32.
[0016]
A tension mechanism 35 having a movable tension roller 36 is disposed on the front side of the rotary feed members 33 and 34. The tension roller 36 is held by a lever member 38a having a fulcrum that is coaxial with the guide roller 37, and the peeled top tape 10a goes around the upper side of the guide roller 37 and the lower side of the tension roller 36 and is guided backward. .
[0017]
A spring 39 is coupled to the arm 38b integrated with the lever member 38a, and the lever member 38a and the arm 38b are always urged downward by the spring 39. As a result, tension is applied to the top tape 10a by the tension roller 36. When the top tape 10a is slackened at the position of the tension mechanism 35, the tension roller 36 moves downward.
[0018]
At the same time, the arm member 38b is rotated by the urging force of the spring 39, and the dog 38c provided at the tip is displaced downward. Then, the displacement of the top tape 10a is detected by detecting this displacement by the photoswitch 40. If slack is detected, the motor 30 is immediately driven to rotate, whereby the slack top tape 10a is fed into the tape container 15 and a predetermined tape tension is maintained.
[0019]
Next, the tape guide (guide member) 16 provided in the tape inlet 8c of the tape feeder 8 will be described with reference to FIGS. The tape guide 16 is a member for guiding the tape 10 drawn from the supply reel 9 to the tape inlet 8c of the main body 8a. As shown in FIG. 4, the tape guide 16 is manufactured by bending a thin metal plate, and a flange portion bent at a right angle on a curved strip 16 a provided to hang from the tape inlet 8 c. 16b is partially provided.
[0020]
As shown in FIG. 5, the strip 16a guides by contacting the lower surface side of the tape 10 guided from below to the tape inlet 8c, and the flange portion 16b prevents the tape 10 from coming off the strip 16a. The strip 16a is thin and flexible, and as shown in FIG. 5 (a), a downward load (in the direction of arrow a) or a lateral direction (in the direction of arrow b) is applied to the tape 10, When a load acts on the strip 16a via the tape 10, the strip 16a is deformed.
[0021]
At this time, since the strip 16a bends and deforms according to the load applied to the tape 10, the tape 10 is in contact with the entire upper surface of the strip 16a regardless of the magnitude and direction of the load. Therefore, the specific portion of the tape 10 is not partially pressed against the tape inlet 8c or other fixed portion, and the concentrated load is not applied to the tape 10.
[0022]
As shown in FIG. 5B, when a lateral load is applied to the tape 10 in a direction parallel to the tape surface (arrow c direction), the tape 10 moves in the load direction, and the side surface of the tape 10 is loaded. Abuts against the flange 16b in the direction in which. At this time, since the strip 16a is deformed in the load direction by the load, a concentrated load is not applied to the tape 10 at the tape introduction port 8c.
[0023]
As described above, by providing the tape guide 16 having the above configuration at the rear end portion of the tape feeder 8, when the supply reel 9 is disposed separately from the main body portion 8a of the tape feeder 8, the tape 10 is interposed therebetween. Thus, even when an external force is applied to the tape 10 when the supply reel 9 connected to the tape feeder 8 is handled, the tape 10 is not bent or broken.
[0024]
【The invention's effect】
According to the present invention, the flexible guide member for guiding the tape sent from the tape supply unit is provided outside the tape introduction port, and the guide member is subjected to a downward or lateral load transmitted through the tape. By causing the bending deformation, it is possible to prevent a concentrated load from being applied to a specific portion of the tape and prevent the tape from being damaged.
[Brief description of the drawings]
FIG. 1 is a perspective view of an electronic component mounting apparatus to which a tape feeder according to an embodiment of the present invention is mounted. FIG. 2 is a side view of the tape feeder according to an embodiment of the present invention. FIG. 4 is an explanatory view of the mechanism of the tape feeder according to the embodiment. FIG. 4 is an explanatory view of the shape of the tape guide of the tape feeder according to the embodiment of the invention. Illustration [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic component mounting apparatus 6 Feeder base 8 Tape feeder 8a Main part 8c Tape inlet 9 Supply reel 10 Tape 11 Sprocket 12 Tape feed mechanism 14 Top tape feed mechanism 15 Tape storage container 16 Tape guide 16a Strip 16b Flange part 17 Transfer head

Claims (1)

A tape feeder that feeds an electronic component to a pickup position of an electronic component mounting apparatus by pitch-feeding a tape holding an electronic component, the main body having a tape feeding mechanism for pitch-feeding the tape, and the main body A tape introduction port for introducing the tape supplied from a tape supply unit provided at a rear end of the tape supply unit separately from the main body unit, and a tape introduction unit provided outside the tape introduction port from the tape supply unit. A flexible guide member that guides the tape to be fed, and the guide member is deformed by a downward load and / or a lateral load transmitted through the tape, thereby causing a specific portion of the tape. Tape feeder characterized by preventing the load of concentrated load.

Images