JP3226302B2 - Tube feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube feeder, and more particularly, to a means for correcting a positional shift of a chip delivered from a tube and supplying the chip to a transfer head.

[0002]

2. Description of the Related Art A tube feeder is frequently used as a means for automatically and automatically supplying an electronic component such as an SOP having leads in two directions to a transfer head of an electronic component mounting apparatus. This tube feeder is composed of a tube in which chips are stored, a chute for sliding the chips sent out from the tubes onto a receiving material, and a transfer device for transferring the receiving materials receiving the chips to a pickup position by a transfer head. The chip on the receiving material is picked up by the transfer head at the pickup position, and is transferred and mounted on the substrate.

A chip supplied from a chute to a receiving material has a displacement in the XYθ directions, and this displacement must be corrected before mounting on a substrate. Conventionally, as such a chip position deviation correcting means, as shown in, for example, Japanese Patent Publication No. Sho 62-3598, a transfer head is provided with a chip position determining claw,
Means for mechanically correcting the chip displacement by closing the positioning claw and chucking the chip while the chip is being sucked by the nozzle of the transfer head and transferred to the substrate have been widely implemented. .

[0004]

By the way, the size and shape of the chips vary in size and size. For example, a relatively small chip or a regular quadrilateral chip can be chucked by the positioning claw to correct the positional deviation. However, it is difficult or impossible to chuck a deformed chip such as a large chip or an elongated chip by the positioning claw. For this reason, such a chip has conventionally been used to detect a positional shift in the XYθ direction by an optical means such as a camera. And X
The displacement in the Y direction is corrected by correcting the movement stroke of the transfer head or the substrate in the XY directions, and the displacement in the θ direction is corrected by rotating the nozzle or the substrate by θ.

However, such means has a problem that the apparatus becomes complicated and the chip must be observed by optical means, so that the cycle time becomes long and the mounting efficiency does not increase.

Accordingly, an object of the present invention is to provide a tube feeder which can solve the problems of the conventional means.

[0007]

SUMMARY OF THE INVENTION For this purpose, the present invention provides a chute for sliding down a tip delivered from a tube;
In a tube feeder comprising a chip transfer device provided in front of the chute, the chip transfer device is provided with a chip receiving material, a pickup position for receiving the chip discharged from the chute, and a pickup by a transfer head. Moving means for reciprocating between two positions, a clamp member for clamping and positioning a chip on the receiving material from right and left, and opening the clamp member at the receiving position; In the middle of the operation, the clamp member is closed to clamp the chip, and at the pickup position, the clamp member is opened and closed again so that the clamp member is opened again. The opening / closing operation of the opening / closing means is performed in conjunction with the movement of the receiving material. To, and in the receiving material, the shoe
A groove is provided for the chip to be delivered from the
A chip stopper is provided at the front of this groove, and
A lamp member is provided on the upper surface of the receiving member, and the lamp member projects from the receiving member.
Clamp the upper part of the tip out with the clamp member
It is something to do .

[0008]

In the above construction, when the chip in the tube slides down the chute and is transferred onto the receiving material, the receiving material moves toward the pickup position. On the way,
The tip is clamped by the clamping means to correct the displacement. Next, the receiving material moves to the pickup position, the clamped state of the clamp means is released, and the chip is picked up by the transfer head.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a tube feeder, and FIG. 2 is a side view. In FIG. 2, reference numeral 1 denotes a tube in which a chip P is housed. 2 is tube 1
Is a tunnel-shaped chute connected to the
And the chute 2 are connected in the same forward leaning posture. Reference numeral 10 denotes an apparatus for transferring chips P, and its structure will be described in detail with reference to FIGS.

Reference numeral 11 denotes a base plate on which rail-shaped cams 21 and 22 are provided on both sides. This cam 2
1 and 22 include a mountain-shaped cam portion 21a and a trapezoidal cam portion 2;
2a are formed with their positions shifted in the X direction (the direction in which the chips P are transported). Reference numerals 23 and 24 denote movers, which are rollers 25 and 2 that roll on the cam 21 and the cam 22, respectively.
6. The roller 12 is axially mounted on the upper end of a vertical shaft 31 inserted into one of the moving elements 23. A U-shaped lift 13 is mounted on the upper end of the shaft 32 inserted into the other mover 24.

Reference numeral 17 denotes a key-shaped lever disposed above the roller 12, which is rotatably mounted on the shaft portion 20. Reference numeral 19 denotes a coil spring for resiliently pushing the lever 17 in a counterclockwise direction. As will be described in detail later, when the roller 25 of the moving member 23 rides on the cam portion 21a, the roller 12 moves up, pushes up the lever 17, swings the lever 17 clockwise, and receives the tapered surface 17a. Material 41 stopper 43 by pressing the rear surface of the chip P on (described later) (see below)
Press against That is, the lever 17 and the like slide the tip P
This is pressing means for pressing against the topper 43 .

In FIG. 3, reference numeral 41 denotes a receiving material, and a groove 42 for receiving the chip P from the chute 2 is formed in the center of the upper surface thereof. Reference numeral 43 denotes a stopper provided at the front of the groove 42. Into the groove 42
The upper part of the chip P protrudes upward from the upper surface of the receiving material 41.
(FIG. 4). As described later, the clamp portion on the receiving material 41
A material projecting from the upper surface of the receiving material 41 by a material 51 (described later).
Clamps the top of the tip P to correct the displacement of the tip P
I do. When the lever 17 swings as described above in a state where the chip P is delivered to the groove 42, the chip P
7 is clamped from the front and rear by the tapered surface 17a and the stopper 43, and positioning in the front and rear direction (X direction) is performed.
A vacuum suction means for the chip P is provided on the stopper 43 side,
The chip P delivered on the receiving material 41 may be sucked to the stopper 43 side, and in this case, the lever 17 can be omitted.

1 and 3, reference numeral 51 denotes a pair of right and left clamp members, which are disposed on the upper surface of the receiving member 41.
A flat plate 51a covering the upper surface and a side plate 51 covering the side surface
b. A pin hole 52 is formed in the side plate 51b, and the pin hole 52 is inserted into a pin 44 protruding from the side surface of the receiving member 41 to thereby provide a clamp member 51.
Is assembled to the receiving material 41.

In FIG. 3, reference numeral 45 denotes a rotary shaft, on which a coil spring 46 is mounted. This rotating shaft 45
Is mounted in the hole 53 of the side plate 51b and the hole 47 of the receiving member 41, while the coil spring 46 is attached to the side plate 51b and the receiving member 41.
, And biases the clamp member 51 in a direction to open outward N1 (see also FIG. 4).

In FIGS. 1 and 3, reference numeral 61 denotes a support bracket, and a pin 62 protrudes from an inner surface of an upper end thereof. The clamp member 51 is assembled to the support bracket 61 by inserting the pin 62 into the hole 55 of the side plate 51b.

3 and 4, a bearing 56 is inserted into the inner surface of the side plate 51b, and a roller 57 is axially mounted on the bearing 56. The roller 57 is located immediately above the elevator 13. When the roller 26 of the mover 24 rides on the cam portion 22a of the cam 22, the lifter 13 rises, and its tapered surface 13a comes into contact with the roller 57 so that the roller 57 resists the spring force of the coil spring 46. To slide inward N2. Then, the chip P in the groove 42 is clamped from the left and right by the clamp member 51, and the positional deviation is corrected. That is, the above components 13, 22, 26, 47, 57, etc.
An opening / closing drive unit that opens and closes the clamp member 51 is configured.

In FIGS. 1 and 4, the support bracket 61 is erected on a base 49.
Is mounted on the slide table 71. This slide 71
Is slidably mounted in the X direction on the base plate 11 via the bearing 72. The base 49 and the slide 71 are connected by a coil spring 73.

In FIG. 1, reference numeral 81 denotes a cylinder,
The tip of the rod 82 is connected to the side surface of the base 49. A plate cam 18 is provided on the side of the base plate 11. When the rod 82 of the cylinder 81 is retracted, the base 49 and the slide 71 slide integrally to the left, and the roller 58 on the side surface of the clamp member 51 rides on the cam surface 18a of the plate cam 18, and 41 and clamp member 51
Rotates clockwise around the rotation axis 62,
In this state, the chip P slides down from the chute 2 to the groove 42 and is delivered. That is, the cylinder 81 is a moving means of the receiving material 41.

The operation of the present apparatus is as described above, and the operation will be described with reference to FIG.

As shown in FIG. 5 (a), when the rod 82 of the cylinder 81 is retracted, the base 49 slides to the left, the roller 58 rides on the cam surface 18a of the plate cam 18, and the receiving material 41 By rotating clockwise about the rotation shaft 62, the receiving material 4
1 and the clamp member 51 have the same forward inclination posture as the chute 2. In this state, the chips P sent from the tube 1 to the chute 2 are delivered to the groove 42 of the receiving material 41. That is, the position A in FIG. 5A is a delivery position of the chip P from the chute 2 to the receiving material 41.

Next, when the rod 82 of the cylinder 81 projects, the base 49 slides rightward, and the roller 25
1a (see FIG. 5B). Then Roller 1
2 rises and pushes up lever 17 from below, and lever 1
7 rotates clockwise, and the taper surface 1 of the lever 17
The chip P is clamped from front and rear by the stopper 7a and the stopper 43.

Subsequently, the roller 26 is moved to the cam portion 22a.
(See FIG. 5 (b) chain line). Then lifter 1
3 rises, its the tapered surface 13a to move the roller 57 inwardly N2, the clamp member 51 is closed, receiving material
The upper side surface of the chip P projecting from the upper surface of 41 is clamped from left and right. Thus, the tip P is moved to the lever 17,
The position shift of the chip P in the XYθ direction is corrected by clamping from the front, rear, right and left by the stopper 43 and the left and right clamp members 51. That is, the position B shown in FIG. 5B is a position shift correction position.

Next, when the rod 82 of the cylinder 81 further projects, as shown in FIG. 5C, the roller 26 comes off the cam portion 22a, and the lever 17 rotates counterclockwise.
Further, the clamp member 51 slides outward N1, and the clamped state of the chip P is all released.
Is picked up by the nozzle 92 and transferred and mounted on a substrate (not shown). That is, the position C shown in FIG. 5C is the pickup position of the chip P. When the transfer head 91 picks up the chip P on the receiving material 41 in this way, the rod 82 of the cylinder 81 retracts and returns to the position shown in FIG.

As described above, the present apparatus transfers the chip P transferred from the chute 2 to the receiving material 41 to the pickup position of the transfer head 91 while the X of the chip P is being transferred.
The position shift is performed in the Yθ direction, and the position shift of the chip P can be corrected by operating the lever 17 and the clamp member 51 in conjunction with the movement of the receiving material 41.

[0026]

As described above, according to the present invention, it is possible to correct the chip displacement during the transfer of the chip transferred from the chute to the receiving material to the pickup position of the transfer head. This eliminates the need for the positioning claw of the transfer head and the optical displacement detection means. In addition, since the dimensions and shapes of the clamp members can be freely designed according to the dimensions and shapes of the chips, it is possible to correct the misalignment of various types of chips. Also, a groove is provided in the receiving material to shoot
By passing the chip to this groove from
Position can be regulated correctly. The tip protruding above the upper surface of the receiving material
Clamping the upper part of the tap with the clamp member on the receiving material
Thereby, the chip in the groove can be reliably positioned. Further
Presses the chip against the stopper by pressing means
This also ensures that the chip is positioned in the front-rear direction.
be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tube feeder according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an exploded view of the same.

FIG. 4 is a sectional view of the same.

FIG. 5 is an explanatory diagram of the operation.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 tube 2 chute 10 transfer device 13 opening / closing driving means 17 lever (pressing means) 22 opening / closing driving means 26 opening / closing driving means 41 receiving member 42 groove portion 43 stopper 46 opening / closing driving means 51 clamp member 57 opening / closing driving means 81 moving means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho-61-165926 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 47/78 H05K 13/02

Claims (2)

(57) [Claims] 1. A tube feeder comprising a chute for sliding down a chip delivered from a tube and a chip transfer device provided in front of the chute, wherein the chip transfer device is provided with a chip receiving material and a chip receiving material. Moving means for reciprocating between a receiving position for receiving the chips discharged from the chute and a pick-up position by the transfer head; a clamp member for clamping and positioning the chips on the receiving material from the left and right; In the receiving position, the clamp member is opened, and in the middle of the receiving position and the pickup position, the clamp member is closed to clamp the chip, and in the pickup position, the clamp member is opened so that the clamp member is opened again. Opening and closing driving means for performing opening and closing operations, and In conjunction with the movement operation of the receiving material so as to perform the opening and closing operation of the opening and closing means, and the receiving material
A groove for receiving a chip from the chute is provided.
And a chip stopper at the front of this groove.
And the clamp member is provided on the upper surface of the receiving material,
The upper part of the tip protruding above the receiving material is fixed to the clamp member.
A tube feeder characterized in that the tube feeder is clamped . 2. A tube feeder according to claim 1, wherein the chip by pressing the rear surface of the chip, characterized in that a means pressing presses on the stopper.