JPH071838Y2 - Tape feeder for supplying chip-shaped electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a chip-shaped electronic component mounting apparatus for supplying chip-shaped electronic components stored in a magazine tape to a suction nozzle at the tip of the mounting head. The present invention relates to a tape feeder for supplying electronic components.

[Prior Art] The automatic electronic component mounting device is mounted on the upper and lower sides of the mounting head and in the XY
This is a device that automatically mounts electronic components on a printed circuit board on a table by moving in the direction. This electronic component automatic mounting device is provided with a component supply device for supplying the electronic component to the suction nozzle at the tip of the mounting head. Especially, the electronic components to be mounted are leadless diodes, resistors, capacitors, etc. In the case of so-called chip-shaped electronic parts,
A tape feeder having a structure as shown in FIG. 4 is generally used as a component supply device.

This tape feeder has a supply reel (not shown) on the back.
The magazine tape 1 containing the chip-shaped electronic components is mounted on the supply reel, and the magazine tape 1 is pulled out one pitch at a time by the sprocket wheel 110 via the roller 111. Then, at the predetermined position immediately before reaching the sprocket wheel 110, the component supply unit 1
12 is formed, and the suction nozzle 3 descends from above the component supply unit 112 to suck the electronic component.

By the way, the magazine tape 1, as shown in FIG.
Since the electronic tape 1d is housed in the recesses provided in the carrier tape 1a at a constant pitch and is covered with the cover tape 1b, it is necessary to peel off the cover tape 1b before reaching the component supply unit. . Therefore, the parts supply unit 11
A peeling claw 113 is provided in front of 2, and the cover tape 1b is folded back by the peeling claw 113 to form the carrier tape 1a.
It is peeled off and wound around the winding roller 114.

The structure of the peeling claw 113 and its surroundings will be described in more detail. As shown in FIG.
In order to keep the upper part of the component supply unit 112 open when the suction nozzle 3 descends, is fixed at a position before the component supply unit 112 by a certain distance. Therefore, after the cover tape 1b is peeled off, the tape is fed by a fixed distance.

Therefore, in order to prevent the electronic component from popping out at the opening of the magazine tape between the peeling claw 113 and the component supply unit 112 due to vibration or the like when the magazine tape 1 is moved,
A guide plate 115 that is integrated with 3 and extends in the left-right direction in the drawing is provided. That is, the guide plate 115 covers the space between the peeling claw 113 and the component supply unit 112 during movement of the magazine tape 1 to prevent the electronic component from popping out. Further, an opening of a guide plate 113 is provided immediately below the suction nozzle 3, and a slider 116 that is movable in the left-right direction is fitted therein, and when the suction nozzle 3 descends, it moves from the same section and the suction nozzle moves. It retreats from the descending path of 3 and opens an opening.

[Problems to be solved] However, as described above, the guide plate 115 and the slider 1 are
Even if you try to prevent the electronic component 1d from popping out by 16,
Although a slight gap d is formed between the upper surface of the electronic component 1d and the bottom surface of the guide plate 115 or the slider 116, when the slider 116 retreats, the electronic component 1d is formed in the gap. A part of it pops out, or in the case of an electronic component that is thicker than the recessed portion of the carrier tape 1a, it contacts the guide plate 115 or the slider 116 and is displaced (for example,
There is a risk that the electronic parts may rotate and one corner thereof may pop out when they come into contact with each other, and there is a problem that the electronic parts are cracked or chipped, or supply failure occurs.

The present invention has been made in order to solve the above-mentioned problems, and chip-shaped electronic components in which the electronic components are prevented from popping out of the magazine tape, misaligned, etc. The purpose is to provide a tape feeder for supply.

[Means for Solving the Problems] To achieve the above object, the present invention provides a tape feeder for supplying chip-shaped electronic components stored in a magazine tape to a suction nozzle at the tip of a mounting head in an automatic electronic component mounting apparatus. A peeling claw for peeling the cover tape from the magazine tape, a winding means for winding the cover tape peeled off by the peeling claw, and a forward / backward movement in synchronization with the descending and ascending movement of the mounting head to peel off the cover tape. A slider for covering and guiding the magazine tape, and a sprocket wheel for feeding the magazine tape by one pitch in synchronism with the upward movement of the head. The slider is provided concentrically with the sprocket wheel. The engaging pin implanted in the rotating plate and the engaging groove formed in the slider and inclined in the feed direction of the magazine tape. Therefore, when the slider is driven, it is brought into close contact with the magazine tape when the slider moves forward and moves apart when the slider moves backward.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall front view showing an embodiment of the present invention, FIG. 2 is an enlarged rear view showing the periphery of the component supply section, and FIGS. 3 (a) and 3 (b) are operation explanatory views.

In FIG. 1, reference numeral 10 denotes a sprocket wheel, which conveys the magazine tape 1 pulled out through a roller 11 from a supply reel (not shown) provided at the back of the apparatus in the direction of arrow a in the figure every pitch. Sprocket wheel 10
Has engaging projections (not shown) on the peripheral surface at regular intervals, and the engaging holes 1c of the magazine tape 1 shown in FIG. Rotates intermittently in the direction.
The intermittent rotation of this sprocket wheel 10 is
The ratchet mechanism is composed of a ratchet wheel 13 and a drive pawl 14 which are fixed to 10 and are both pivotally supported by a rotary shaft 12.

Reference numeral 15 is a rotary plate rotatably supported on the rotary shaft 12,
The drive claw 14 is attached to the rotating plate 15. Also,
Reference numeral 16 denotes a drive rod, which is rotatable about a support shaft 17 and is always urged in the counterclockwise direction by a spring 18. An engaging piece portion 19 is formed at the tip of the drive rod 16, and as shown in FIG. 3A, the pressing arm 4 provided on the mounting head 2 is engaged with the downward movement of the head 2. The drive rod 16 is rotated in the clockwise direction in the drawing by coming into contact with the piece 19.

The tip of the drive rod 16 is connected to the rotating plate 15 via a connecting member 16a, and the rotating plate 15 is rotated counterclockwise by a certain amount by the clockwise rotating operation.

Next, the drive rod 16 causes the spring 18 to move as the pressing force on the engaging piece portion 19 is released as the mounting head 2 rises.
With the urging force of (3), it rotates in the clockwise direction in the drawing (FIG. 3 (b)), and in conjunction with this operation, the rotating plate 15 also rotates in the clockwise direction in the drawing.

The drive claw 14 meshes with the tooth one pitch ahead of the ratchet wheel 13 (FIG. 3 (a)) in accordance with the above-described rotation of the rotating plate 15 in the counterclockwise direction in the figure, and further the rotating plate 15 The ratchet wheel 13 is rotated counterclockwise in the figure by one pitch in accordance with the clockwise rotation in the figure. 20 is a ratchet wheel
The positioning gear fixed to the sprocket wheel 13 and the positioning claw 20a is engaged by the biasing force of the spring 20b to position the sprocket wheel 10 every one pitch rotation.

In the drawing, reference numeral 21 is a supply table which forms a component supply unit, and is installed so as to support the lower portion of the magazine tape 1 that has been transferred immediately before reaching the sprocket wheel 10. Adsorption nozzle 3 provided at the tip of the mounting head 2
Is the carrier tape 1a of the magazine tape 1 on the supply table 21.
(Cover tape 1b is peeled off by a peeling claw described later) descends toward the electronic component 1d housed in the recess,
After adsorbing the electronic component 1d on the supply table 21, it rises.

Reference numeral 22 denotes a peeling claw formed with a pointed tip, which is integrated with a guide member 24 fixed to the apparatus main body 23 and covers a portion directly above the magazine tape 1 supplied on the supply table 21 to form a cover tape. It prevents the electronic parts in the carrier tape 1a from peeling off after the peeling of the cover tape 1b and the peeling of the cover tape 1b. The guide member 24 is formed in the shape of an arm, is pivotally supported by the pivot 25, and is urged downward by the torsion coil spring 26, so that the guide member 24 is always lightly pressed against the upper surface of the peeled carrier tape 1a of the cover tape 1b. In this state, the thickness of the carrier tape 1a can be changed.

An opening for adsorbing and picking up an electronic component is provided at a position directly below the suction nozzle 3 of the guide member 24, and a slider that can be opened and closed to prevent the component from jumping out at this opening. 27 are provided. As shown in FIG. 2, the slider 27 integrally extends from an engagement plate 28 provided on the back side of the apparatus main body 23, and is bent from the guide member 24 to the back side (FIG. 2). It is guided by an elongated hole 28a loosely fitted in two guide pins 24a planted in (not shown) and slides in the left-right direction in the drawing. The engaging plate 28 has an engaging groove 29 provided so as to be inclined in the feeding direction of the magazine tape 1, and engages with the engaging pin 30 provided on the rotating plate 15 described above. Reference numeral 31 is a braking means composed of rubber, a coil spring, etc. and a friction plate.

Therefore, as the mounting head 2 descends, the pressing arm 4 descends and presses the engaging piece portion 19, thereby connecting the connecting member 16a.
By rotating the rotary plate 15 through the arrow as shown by an imaginary line in FIG. 2, the slider 27 moves to the right in the drawing to open the cover of the electronic component immediately below the suction nozzle 3 to suck the suction component. If it is possible, move. Then, as the mounting head 2 rises,
As described above, the magazine tape 1 is fed by one pitch, and the engaging plate 28 moves forward to return to the original state.
Return to the state of covering electronic parts with 27.

Here, since the engagement groove 29 is provided so as to be inclined in the feeding direction of the electronic component, the slider 27 is retracted (rightward in FIG. 2).
When doing, a component of force that pushes up the engagement plate 28 is generated,
When the slider 27 is lifted up from the electronic component (magazine tape) and moves backward, when the slider 27 moves forward (to the left), the engaging plate 28 is pushed up to the close contact with the magazine tape and moves forward. As a result, when the slider 27 moves forward together with the magazine tape 1, the electronic components in the magazine tape 1 are covered firmly, and when the slider 27 is retracted independently, it is lifted up from the electronic components in the magazine tape 1 and retracted. It is possible to prevent the electronic parts from popping out and being displaced.

32 is a winding roller as a winding means for the cover tape 1b. The winding roller 32 has a gear 34 that meshes with the biasing gear 33, and receives the biasing force of a spring 35 via the biasing gear 33 and is biased counterclockwise in the drawing. here,
A one-way clutch member 36 that transmits power only in the clockwise direction in the drawing is interposed between the biasing gear 33 and the spring 35, and the arm 36a of the clutch member 36 engages with the base end of the drive rod 16. I am fit. Therefore, the spring 35 is pushed up every time the drive rod 16 rotates in the clockwise direction in the drawing, and always holds a biasing force above a certain level.

The magazine tape 1 is peeled off the cover tape 1b by the tip of the peeling claw 22, and is folded back to the winding roller 32 side. The folded cover tape 1b is wound around the winding roller 32 via the guide protrusion 37 and the guide roller 38.
Then, the cover tape extending from the take-up roller 32 to the tip of the peeling claw 22 (that is, the peeled cover tape).
The cover tape 1b is always pulled in the direction of the take-up roller 32 because the counterclockwise biasing force acting on the take-up roller 32 acts on the take-up roller 32.

39 is a screw for attaching the above-mentioned tape feeder to the electronic component automatic mounting apparatus.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the invention. For example, even if the component supply device is present on the sprocket wheel, by installing the peeling claw to advance and retract on the component supply position,
The operation is similar to that of the above embodiment.

[Effect of the Invention] As described above, according to the present invention, the cover tape of the magazine tape is peeled off, then covered with the guide plate, and transferred.
Since the slider floats up and retracts when it is adsorbed at the supply position, there is no risk of electronic parts popping out of the magazine tape or causing misalignment. This has the effect of reliably preventing defects and the like.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention, FIG. 2 is a rear view showing the periphery of the component supply section in an enlarged manner, and FIGS. 3 (a) and 3 (b) are operation explanatory views and FIG. FIG. 5 is a front view showing the outline of a conventional tape feeder, FIG. 5 is a front view showing the periphery of the component supply unit in an enlarged manner, and FIG. 6 is a perspective view of a magazine tape. 1: Magazine tape 2: Mounting head 3: Suction nozzle 10: Sprocket wheel 13: Ratchet wheel 14: Drive claw 15: Rotating plate 16: Drive rod 21: Supply table 24: Guide member 27: Slider 28: Engagement plate , 28a: slot 29: engaging groove 30: engaging pin 32: take-up roller

Claims (1)

[Scope of utility model registration request] 1. A tape feeder for supplying a chip-shaped electronic component housed in a magazine tape to a suction nozzle at the tip of a mounting head in an automatic electronic component mounting apparatus,
A peeling claw that peels the cover tape from the magazine tape,
Winding means for winding the cover tape peeled off by the peeling claw, and a slider for covering and guiding the magazine tape peeled off the cover tape by advancing and retreating in synchronization with the descending and ascending movements of the mounting head, A sprocket wheel that feeds the magazine tape one pitch at a time in synchronization with the ascending movement of the mounting head, and the engagement in which the slider is planted on a rotary plate provided concentrically with the sprocket wheel. A chip characterized by being driven by a pin and an engaging groove provided in the slider inclining in the magazine tape feeding direction, and closely moving to the magazine tape when the slider moves forward and separated when moving backward. Tape feeder for supplying electronic components.