JPH0821795B2 - Tube feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a tube feeder for supplying a chip to an electronic component mounting apparatus, and in particular, a chip delivered from a tube is reliably placed in a take-up position by a transfer head. Regarding means for supplying.

(Prior Art) As a means for supplying a semiconductor chip such as SOP having leads in two directions to an electronic component mounting apparatus, a tube feeder is known in addition to a tape feeder and a tray.

FIG. 8 shows a conventional tube feeder, in which 100 is a thin tube containing a chip P such as SOP, which is tilted forward in a bracket 101 which is a constituent member of the tube stocker. It is stacked. A tunnel body 102 communicates with the lower end of the tube 100 and is curved in an arc shape. Reference numeral 103 denotes a chip pedestal continuously provided at the lower end of the tunnel body 102, which is mounted on the vibrating table 104. 105 is a transfer head.

Next, the operation will be described. The tip P in the tube 100 slides down inside the tunnel body 102 and is discharged onto the pedestal 103. The receiving table 103 is driven by the vibrating table 104 and vibrates in small steps.
The chips P discharged to the pedestal 103 slowly move forward due to this vibration, and the first chip P is taken up by the transfer head 105 and transferred and mounted on a substrate (not shown).

(Problems to be Solved by the Invention) The tunnel body 102 serves as a transfer path for the tip P between the tube 100 in a forward tilted posture and the horizontal pedestal 103, and smoothly connects the both 100 and 103. Therefore, it is curved in an arc shape. Therefore, the tip P that slides down inside
Has a problem that the curved surface a is easily caught on its inner wall surface (see reference numeral Pa in the figure), and when it becomes hard, the tube 102 is clogged and the chip P cannot be supplied to the pedestal 103.

Therefore, it is an object of the present invention to provide a tube feeder that can reliably transfer chips stored in a tube to a take-up position of a transfer head.

(Means for Solving the Problem) For this purpose, the present invention is provided with a tube stocker that holds a tube containing a chip in a forward tilted posture, and a tube stocker that is connected to a front portion of the tube stocker in a forward leaned posture. , A tunnel device for sliding down the chips delivered from the tube, and a chip transfer device provided under the tunnel device.

Then, the chip transfer device is connected to the chip receiving member, the receiving member is connected to the lower end portion of the tunnel device in a forward tilted position, and a receiving position for receiving chips discharged from the tunnel device and a forward tilting position. A moving device that changes the posture from a posture to a horizontal posture, and moves a received chip between two positions of a take-up position where the transfer head takes the chip up; Is provided with a chip drop prevention device for preventing the chip located at the lowermost part of the tunnel device from falling when the chip is moved from the receiving position to the take-up position. Further, the moving device includes a slider and a moving drive means for moving the slider between the receiving position and the take-up position, and the receiving member is rotatable on the slider side in a vertical direction about a pin. A cam having an inclined cam surface is provided in the movement path of the slider while being axially supported, and a roller mounted on the receiving material side is slid on the cam surface, whereby the receiving material is in the forward tilted posture. The posture is changed to the horizontal posture.

In addition, the receiving member is composed of a pedestal having a recess formed in the upper surface and a mover mounted in the recess so that the insertion depth is adjustable, and the lower ends of the leads of the chip are provided on both sides of the recess. The groove part which a part fits is formed.

(Operation) In the above structure, the tip delivered from the tube slides down the tunnel device and is delivered to the receiving member that stands by at the receiving position in the forward tilted posture. Next, this receiving material is driven by the moving device and moves to the take-up position while changing its posture from the forward tilted posture to the horizontal posture, and at that position, the chips on the receiving material are taken up by the transfer head. Then, it is transferred and mounted on the substrate.

Example 1 Next, an example of the present invention will be described with reference to the drawings.

(I) Overall Structure FIG. 1 shows a tube feeder, which comprises a tunnel device A, a tube stocker B, and a chip transfer device C.

(Ii) About Tunnel Device A 1 is a table on which the tube feeder is set, 2 is a base material of the tube feeder, and 3 is a stand portion standing on the base material 2. The tunnel device A mainly includes a linear tunnel body 4, and the tunnel body 4 is obliquely installed on the pedestal 3 in a forward tilted posture.

(Ii) Tube stocker B In FIG. 1, reference numeral 5 denotes a long plate-shaped frame continuously provided on the upper part of the tunnel body 4, and the tubes 8 are provided at both ends thereof.
An upper bracket 6 and a lower bracket 7 for vertically positioning the upper end and the lower end of the are installed upright. The tube 8 has a thin tubular shape, and a large number of chips P such as SOP are housed therein. A plurality of tubes 8 are stacked in a forward tilted posture, and as will be described in detail later, the empty bottommost tube 8 falls into a U-shaped arm 10 vertically installed on the frame 5. Be recovered.

The lower end of the frame 5 is pivotally attached to the upper part of the tunnel body 4 by a pin 9. 11 is a shaft provided below the tunnel body 4, 12 and 13 are semi-circular stoppers and operating parts respectively attached to the central portion and the rear end portion thereof,
It is provided for the convenience of refilling the tube 8. That is, by rotating the operating portion 13 with a fingertip and bringing the stopper 12 into contact with the protrusion 15 provided on the lower surface of the frame 5, it is possible to prevent the frame 5 from rotating about the pin 9 by its own weight. Then, the frame 5 is held in the forward tilted posture. In this state, the lowermost tube 8 and the tunnel body 4 are linearly connected at the same inclination angle. Further, by operating the operation portion 13 to disengage the stopper 12 from the protrusion 15, the frame 5 rotates downward by its own weight to maintain a horizontal state, and in this state, the tube 8 is replenished between the brackets 6 and 7. It is supposed to do.

FIG. 2 is a side view of the tube feeder B, and 20 is a tube 8 replacement device provided behind the upper bracket 6. Reference numeral 21 denotes a base portion, which is mounted on the upper end portion of the frame 5. A cylinder 22 is attached to the back surface of the base 21. The frame 23 attached to the rear surface of the cylinder 22 includes a first rod 56 of a cylinder 56 (described later).
a is installed. 24 is the air tube.

A cover box 25 is attached to the base 21, and a lever 26 is rotatably attached to the side surface of the cover box by a pin 27. The lowermost tube 8a held by the brackets 6 and 7 communicates with the tunnel body 4, and the tube 8a
The inner chip P is delivered to the tunnel body 4 by its own weight. 28 is a window provided on the upper surface of the tunnel body 4, 29 is a sensor for detecting the presence or absence of the chip P in the tunnel body 4 through the window 28, and its operation will be described later.

FIG. 3 shows the inside of the cover box 25. Reference numeral 32 denotes a support member slidably mounted on the base 21 in the front-rear direction, and is urged forward by a spring member 33. There is. The rear end portion of the lowermost tube 8a is placed on the front support portion 32a of the support member 32.

Reference numeral 35 is a slider disposed above the support member 32 so as to be slidable in the front-rear direction, and is biased forward by a spring member 36. On the front part of the slider 35, a hitting part 35a is provided so as to project. The hitting portion 35a presses the tube 8a by the spring force of the spring member 36, and the lower end portion of the tube 8a is pressed against the upper end portion of the rail body 4.

Reference numeral 37 denotes a disc disposed on the side of the slider 35 so as to be rotatable around the pin 34, and the pin 38 protruding from the slider 35 is
It engages with a groove 39 formed by notching in the circular plate 37.

When the rod 56a projects forward, it is pushed by it and the lever 26 rotates clockwise, and the lower end of the lever 26 pushes the pin 38 rearward and the slider 35 retracts. When the rod 56a retracts, the slider 35 advances due to the spring force of the spring material 36, and the striking portion 35a strikes the rear end surface of the tube 8. In this way, by repeatedly advancing and retracting the rod 56a, the tube 8a is continuously struck by the striking portion 35a, and the tip P in the tube 8a is reliably delivered to the tunnel body 4 by the impact force thereof, and the tube P enters the tube 8a. It is prevented that the chip P is scratched and cannot be delivered to the tunnel body 4.

Reference numeral 41 is a locking member slidably disposed on the upper portion of the slider 35, and a locking portion 41a is provided at the front portion so as to project. The locking member 41 is mounted on the rod 22a of the cylinder 22, and the pin 42 projecting from the locking member 41 is engaged with the second groove 43 formed in the disk 37 by cutting. Next, the operation of the exchange device 20 will be described.

When the tip P is no longer detected by the sensor 29, it is judged that the tip P in the tube 8a has disappeared, and the tube 8 is replaced as follows. That is, the cylinder 22 is activated by the signal from the sensor 29, and the rod 22a is projected. Then, the locking member 41 moves forward, and the locking portion 41a enters the second stage tube 8b and locks it (see FIG. 4). Further, the pin 42 moves forward together with the locking member 41, and the disk 37 is rotated clockwise by being pushed by this. Then, the pin 38 of the slider 35 is pushed by the edge of the groove 39 and retracts, and with this, the slider 35 also retracts. Then, the slider 3 is attached to the protrusion 32b protruding from the rear end of the support member 32.
The rear end portion 35b of 5 hits, the support member 32 is pushed by this and retreats, the support portion 32a retreats, the tube 8a loses the support of the support portion 32a, and falls onto the arm 10.

When the lowermost tube 8a falls in this way, the rod 22a then retracts. Then, the locking member 41 retracts, and the locking portion 41a separates from the tube 8b. Also, the locking member 4
When 1 is retracted, the disk 37 is pushed by the pin 42 to rotate in the counterclockwise direction, the slider 35 and the support member 32 are advanced by the spring force of the spring members 33 and 36, and the second stage tube 8b. Drops onto the support portion 32a, and thereafter, the tip P is delivered from the tube 8b to the tunnel body 4.

(Iv) About Chip Transfer Device C In FIG. 1, reference numeral 43 denotes a chip P receiving member provided in front of the lower end of the tunnel body 4. As shown in FIG.
The receiving member 43 is configured by mounting a plate 47 as a moving element in a recess 45 formed in the upper surface of the receiving table 44. The chip P sent out from the tunnel body 4 is transferred into the recess 45, but the groove 46 into which the lower end of the lead L fits on both sides of the recess 45 so that the lower end of the lead L is not damaged. Are formed. Further, the plate 47 is mounted so that the insertion depth can be adjusted by sliding on the recess 45 with the bolt 49 through the elongated hole 48 so that the position can be adjusted according to the size of the chip P.

The receiving member 43 is connected to the lower end portion of the tunnel body 4 shown in FIG.
The chip P discharged from the front is received and then moved to the take-up position (b) by the transfer head 71 in the front while changing the attitude from the forward tilted attitude to the horizontal attitude. Next, referring to FIG. Meanwhile, the moving device 40 for the receiving member 43 will be described.

Reference numeral 51 is a guide rail provided in the front portion of the base member 2, and 52 is a slider that slides along the guide rail 51 in the front-rear direction. A column 53 is erected on the front portion of the slider 52, and the receiving member 43 is rotatably supported on the column 53 by a pin 54 so as to be vertically rotatable. Reference numeral 55 denotes a spring member that connects the receiving member 43 and the slider 52, and biases the receiving member 43 counterclockwise about the pin 54. Reference numeral 56 is a cylinder mounted on the back surface of the base portion 3 as a movement driving means, and the second rod 56b thereof is attached to the slider 52. A shaft 58 to which a coil spring 57 is attached is attached to the slider 52, and a plate 59 is attached to the tip of the shaft 58.

Reference numeral 67 denotes a cam projectingly provided on the base portion 3 (also refer to FIG. 1), which is located in the moving path of the slider 52 below the lower end portion of the tunnel body 4 and has an inclined cam surface 68. Have Further, a roller 69 rolling on the cam surface 68 is mounted on the receiving member 43. The moving device 40 has the above-mentioned configuration, and its operation will be described below.

When the rod 56b of the cylinder 56 projects, the slider 52 moves forward until it abuts on the stopper portion 70 provided at the tip of the base material 2, and the receiving material 43 is positioned at the take-up position (B). At this take-up position (b), the receiving material 43
The transfer head 71 is in a horizontal position so that the chip P on it can be easily taken up. Next, when the rod 56b retracts, the slider 52 also slides to the left in FIG. 5, and together with this, the support material 43 also slides in the same direction, and the roller 69 rides on the cam surface 68 and slides on the cam surface 68. As the pedestal 43 moves, the pedestal 43 rotates upward about the pin 54, and changes from the horizontal posture to the forward lean posture. In that state, the receiving member 43 contacts the lower end surface of the tunnel body 4,
The tunnel body 4 and the recess 45 of the receiving member 43 communicate with each other, and the tunnel body 4
The chip P therein slides down into the recess 45. That is, receiving material 43
Is thus positioned at the receiving position (a) of the tip P in the forward tilted posture in which it is connected to the tunnel body 4.

Next, when the rod 56b moves forward, the receiving member 43 changes its posture from the forward tilted posture to the horizontal posture and moves to the take-up position (b), and the chip P held by this is taken by the transfer head 71. It is moved up and transferred and mounted on the substrate 72.

In the exchange device 20, the rod 56a is the first rod of the cylinder 56, and the receiving member 4 associated with the protrusion and withdrawal of the rod 56b.
It sunk in synchronism with the reciprocating motion of 3 and, as described above, the tube 8a
Is tapped to deliver the tip P in the tube 8a to the tunnel body 4. Next, with reference to FIG. 5, the lowermost chip drop prevention device 60 in the tunnel body 4 will be described.

The rotor 61 has a pin 62 on the lower end of the lower end of the tunnel body 4.
Is pivoted on. A pin is attached to the top surface of the tip of the rotor 61.
63 is erected, and the spring force of the spring material 64 causes the rotor 61
Is pushed upward, the pin 63 pushes up the lowermost chip P in the tunnel body 4 and presses this chip P against the upper surface in the tunnel body 4 to prevent the chip P from falling. are doing.

A pin 65 is vertically provided on the lower surface of the front portion of the rotor 61. This pin 65 is inside the plate 59
When 56b retracts, the pin 65 is pushed by the plate 59 and retracts. Then, the rotor 61 rotates clockwise about the pin 62 (see the chain line in the figure), and the pin 63 releases the pressed state of the chip P.

The chip drop prevention device 60 is driven by the same cylinder 56 as the receiving member 43 and operates in synchronization with the reciprocating movement of the receiving member 43. That is, when the receiving material 43 reaches the receiving position (a), the blocking state by the pin 63 is released, and the chip P is slid down and delivered to the receiving material 43. The receiving material 43 is the tunnel body 4.
When the pin 63 moves away from the lower end of the to the take-up position (b) to the take-up position (b), the pin 63 ascends to prevent the lowermost chip P from falling. As described above, the present apparatus has (1) the striking operation of the tube 8a by the rod 56a, (2) the reciprocating movement operation of the support member 43 by the sliding of the slider 52, and (3) the chip P by the rotation of the rotor 61. Since the fall prevention operation is performed by driving the same cylinder 56, these operations can be accurately synchronized.

(V) Overall operation The tip P of the lowermost tube 8a slides down inside the tunnel body 4 and is delivered to the recess 45 of the receiving member 43 at the receiving position (a). Next, the rod 56b of the cylinder 56 projects, so that the receiving material 43 moves from the receiving position (a) to the take-up position (b), and the chip P of the receiving material 43 is taken up by the transfer head 71. The substrate 72 is transferred and mounted.

The chips P in the tube 8a are sequentially sent into the tunnel body 4, but the tube 8a has a thin tubular shape, so that the flow of the chips P easily stagnates. Therefore, in synchronization with the reciprocal movement of the receiving member 43 by the second rod 56b of the cylinder 56, the lever 26 is intermittently reciprocally rotated by causing the first rod 56a to project and retract, and the tube is struck by the striking portion 35a. Hit the rear end face of 8a to insert the tip P in the tube 8a into the tunnel body 4
Send it in securely.

As described above, when the chips P are mounted on the substrate 72 one after another and the chips P in the tube 8a are out of stock, a signal to that effect is issued from the sensor 29, and the rod 22a of the cylinder 22 projects. Then, as described above, the locking portion 41a of the locking member 41 projects to lock the second-stage tube 8b, the supporting portion 32a of the supporting member 32 retracts, and the empty tube 8a is recovered. Drop to part 10. Next, when the rod 22a retracts, the support portion 35a moves forward and the locking portion 41a
Returns and separates from the tube 8b, the tube 8b is placed on the support portion 32a, and thereafter, the tip P is supplied from the tube 8b to the tunnel body 4.

(Embodiment 2) FIG. 7 shows another embodiment of the tube stocker B. This stocker B is provided with a holder 83 for stacking and storing tubes 82 on a support frame 81 inclined downward from the upper end of the tunnel body 4, and further pushing up a chip inside the tube 83 below the holder 83. Device 84
Are arranged. 85 is the storage box.

The lifting device 84 has a motor 86, a feed nut portion 87 driven by the motor 86, and a feed screw 88 that slides in an oblique direction. A transfer device 90 is provided above the lowest tube 82a. This transfer device 90 is an arm that is driven by a rotary actuator 91 to reciprocally rotate.
92, and a suction pad portion 93 vertically provided on the arm 92. Reference numeral 94 is a holding bracket for the tube 82a, 95 is a mounting frame for the tube, 96 is a cylinder mounted on the frame 95, and 97 is a storage case provided on the lower surface of the box 85. Next, the operation will be described.

When the motor 86 is driven, the pitch of the feed screw 88 rises,
The tip of the feed screw 88 enters into the tube 82a and pushes up the chip P stored therein. The uppermost chip P pushed up is adsorbed by the adsorption pad portion 93, transferred to the receiving portion 98 at the upper end of the tunnel body 4, slides down the tunnel body 4, and is delivered to the receiving material 43. .

In this way, the chips P in the tube 82a are transferred to the tunnel body 4 one after another.

When the tip P in the tube 82a disappears, a sensor (not shown) detects that fact, and the feed screw 88 descends at a stroke to escape from the tube 82a and the cylinder 9
6, the bracket 94 slides in the direction of pushing the side wall surface of the tube 82a, and the tube 82a pushed by this falls into the storage case 97 and is collected. Next, when the bracket 94 returns to the original position, the tube 82b of the second stage drops to the lowermost portion, and thereafter, the chip P in the tube 82b is supplied to the tunnel body 4 in the same manner as described above.

According to the present invention, the tip delivered from the tube is
Be sure to hand over to the receiving material one by one through the tunnel device,
It can be transferred to the take-up position by the transfer head. Moreover, in this case, the receiving material moving device is a slider,
The slider is composed of a movement driving means for moving between the receiving position and the take-up position, and the receiving member is rotatably supported on the slider side in the vertical direction about the pin, and is inclined in the moving path of the slider. A cam having a cam surface is provided, and the roller mounted on the receiving side is slid on the cam surface to change the posture between the forward leaning posture and the horizontal posture. It is possible to reliably switch the posture of the device, and to reliably receive the chip from the tunnel device at the receiving position and to deliver the chip to the transfer head at the take-up position.

Further, since the receiving material is composed of a pedestal having a concave portion on the upper surface and a moving element which is mounted inside the concave portion so that the insertion depth can be adjusted, various types of products having different dimensions can be obtained. Since the groove can be applied to the chip and the lower end of the lead of the chip fits on both sides of the recess, it is possible to prevent the lower end surface of the lead of the weak chip from being damaged.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of a tube feeder, FIG. 2 is a side view of the same, and FIGS. 3 and 4 are internal side views of an exchange device. Is a side view of the moving device, FIG. 6 is a perspective view of the receiving material, FIG. 7 is a side view of another tube stocker, and FIG. 8 is a side view of a conventional tube feeder. A: Tunnel device B: Tube stocker C: Chip transfer device P: Chip 8: Tube 40: Moving device 60: Chip drop prevention device

Claims (2)

[Claims] 1. A tube stocker for holding a tube containing a tip in a forward tilted posture, and a tube stocker connected to the front part of the tube stocker in a forward leaned posture so that the tip delivered from the tube slides down. A tunnel device and a chip transfer device provided under the tunnel device,
This chip transfer device, the chip receiving material, this receiving material,
It is connected to the lower end of the tunnel device in a forward tilted posture, the receiving position for receiving chips discharged from the tunnel device and the posture is changed from the forward tilted posture to a horizontal posture, and the received chips are transferred by the transfer head. A moving device for moving between two take-up positions for take-up, and at the bottom of the tunnel device, with the receiving material moved from the receiving position to the take-up position, A chip drop prevention device for preventing the chip located at the lower part from falling is provided, and further, the moving device includes a slider and a movement driving means for moving the slider between the receiving position and the take-up position. The support member is rotatably supported on the slider side in the vertical direction about a pin, and has a cam surface inclined in the moving path of the slider. And a roller mounted on the receiving material side is slid on the cam surface to change the posture of the receiving material between the forward leaning posture and the horizontal posture. Tube feeder. 2. A tube stocker for holding a tube containing a tip in a forward tilted posture, and a tube stocker connected to the front part of the tube stocker in a forward leaned posture so that the tip delivered from the tube slides down. A tunnel device and a chip transfer device provided under the tunnel device,
This chip transfer device, the chip receiving material, this receiving material,
It is connected to the lower end of the tunnel device in a forward tilted posture, the receiving position for receiving chips discharged from the tunnel device and the posture is changed from the forward tilted posture to a horizontal posture, and the received chips are transferred by the transfer head. A moving device for moving between two take-up positions for take-up, and at the bottom of the tunnel device, with the receiving material moved from the receiving position to the take-up position, A chip drop prevention device is installed to prevent the chips located at the bottom from falling, and the receiving material is mounted on the pedestal with a concave portion on the upper surface and the insertion depth is adjustable inside the concave portion. The tube feeder is characterized in that a groove portion to which the lower end portion of the lead of the chip fits is formed on both sides of the recessed portion.