JPH02271699A - Tube feeder - Google Patents

Abstract

PURPOSE:To effectively deliver chips one by one to a receiving material and to feed it to a takeup position by a transfer head by providing a chip drop preventing unit for preventing the chip disposed at the lowermost part of a tunnel unit from dropping. CONSTITUTION:A chip drop preventing unit 60 is driven by the same cylinder 56 as a receiving member 43, and operated synchronously with the reciprocation of the member 43. That is, when the material 43 is disposed at the receiving position, a stopping state with a pin 63 is released, and a chip P is slid to the material 43 to be delivered. When the material 43 is separated from the lower end of a tunnel body 4 to a takeup position, the pin 63 is raised to prevent the chip P of the lowermost part from dropping. Thus, the hitting of the tube, the reciprocating of the material 43 and the drop preventing of the chip P are conducted by the driving of the same cylinder 56, thereby accurately synchronizing the operations. Thus, the chip contained in the tube can be effectively fed to the takeup position of the head.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a tube feeder that supplies chips to an electronic component mounting apparatus, and in particular to a tube feeder that reliably transports chips fed from a tube to a pick-up position by a transfer head. Concerning the means for supplying.

(Prior Art) In addition to tape feeders and trays, tube feeders are known as means for feeding semiconductor chips such as SOPs having leads in two directions to electronic component mounting apparatuses.

FIG. 8 shows a conventional tube feeder, in which reference numeral 100 is a thin tube in which a chip P such as SOP is housed, and the tube is placed in a forward tilted position on a bracket 101 which is a component of the tube stocker. Laminated. 1
02 is a tunnel body communicating with the lower end of the tube 100, and is curved in an arc shape. 103 is tunnel body 1
02 is connected to the lower end of the chip holder, and is attached to the vibration table 104. l'05 is a transfer head.

Next, the operation will be explained. The chip P inside the tube 100 slides down inside the tunnel body 102 and is discharged onto the pedestal 103. The pedestal 103 is driven by a vibration table 104 and vibrates little by little, and the chip P discharged onto the pedestal 103 moves slowly forward due to this vibration, and the leading chip P is ticked by the transfer head 105. It is then transferred and mounted on a board (not shown).

(Problem to be Solved by the Invention) The tunnel body 102 serves as a transfer path for the chip P between the tube 100 in a forward-inclining position and the horizontal pedestal 103, and smoothly moves both 100 and 103. It is curved into an arc for connection. For this reason, the chip P sliding down the inside is likely to get caught on the inner wall surface at the curved part a (see reference numeral Pa in the figure), and if this happens, the tube 102 will become clogged and the chip P will not be supplied to the pedestal 103. There was a problem that disappeared.

Therefore, the present invention provides for a chip housed in a tube to
It is an object of the present invention to provide a tube feeder that can be reliably transferred to a pick-up position of a transfer head.

(Means for Solving the Problems) For this purpose, the present invention provides a tube stocker that holds a tube containing a chip in a forward tilted position, and a tube stocker that is connected to the front part of the tube stocker in a forward tilted position. It consists of a tunnel device for sliding down the chips sent out from the tube, and a chip transfer device provided at the bottom of the tunnel device.

The chip transfer device includes a chip receiving material, a receiving position in which the receiving material is connected to the lower end of the tunnel device in a forward tilted position, and a receiving position for receiving chips discharged from the tunnel device, and a forward tilted receiving material. a moving device that changes the posture from a horizontal posture and moves the received chip between two positions, such as a tick-up position where the received chip is ticked up by a transfer head; A chip fall prevention device is provided to prevent the chip located at the lowest part of the tunnel device from falling when the chip is moved from the receiving position to the pick-up position.

(Function) In the above configuration, the chip sent out from the tube is
The material slides down the tunnel device and is handed over to the receiving material waiting at the receiving position in a forward leaning position. Next, this receiving material is driven by a moving device and moves to the pick-up position while changing its posture from a forward tilted position to a horizontal position. At that position, the chips on the receiving material are picked up by the transfer head. It is uploaded and transferred and mounted on the board.

(Example 1) Next, the present invention will be described in detail with reference to the drawings.

(i) Overall configuration FIG. 1 shows a tube feeder, and this tape feeder consists of a tunnel device A, a tube stocker B, and a chip transfer device C.

(ii)) Regarding the tunnel device A, 1 is a table on which the tube feeder is placed, 2 is a base material of the tube feeder, and 3 is a stand erected on the base material 2. The tunnel device A has a linear tunnel body 4 as its main body, and is constructed by diagonally disposing the tunnel body 4 on a platform 3 in a forward-inclined position.

(ii) About tube stopper B In FIG. 1, 5 is a long plate-shaped frame connected to the upper part of the tunnel body 4, and the upper and lower ends of the tube 8 are positioned at both ends of the frame. Upper bracket 6 and lower bracket 7
has been erected. This tube 8 has a thin tubular shape,
A large number of chips P such as SOPs are housed inside. A plurality of tubes 8 are stacked in a forward tilted position, and as will be described in detail later, the empty lowest tube 8
falls into a U-shaped arm 10 vertically installed on the frame 5 and is collected.

The lower end of the frame 5 is connected to the tunnel body 4 by a pin 9.
It is attached to the upper part of the shaft. Reference numeral 11 indicates a shaft provided below the tunnel body 4, and reference numerals 12 and 13 indicate a semicircular stopper and an operating section attached to the central and rear ends of the shaft, respectively, to facilitate refilling of the tube 8. It has been established. That is, by rotating the operation part 13 with a fingertip, the stopper 12 is moved to the protrusion 15 provided on the lower surface of the frame 5.
By contacting the pin 9, the frame 5 is prevented from rotating due to its own weight around the pin 9, and the frame 5 is held in a forward tilted posture. In this state, the lowermost tube 8 and the tunnel body 4 are connected linearly at the same angle of inclination.

In addition, by operating the operation part 13 to separate the stopper 12 from the protrusion 15, the frame 5 rotates downward under its own weight and maintains a horizontal state, and in this state, the bracket 6
．． The tube 8 is refilled between 7 and 7.

FIG. 2 is a side view of the tube feeder B, and 20 is a tube 8 exchange device provided behind the upper bracket 6. Reference numeral 21 denotes a stand, which is attached to the upper end of the frame 5. On the back of the base 21, there is a cylinder 2
2 is installed. Further, a first rod 56a of a cylinder 56 (described later) is attached to the frame 23 attached to the back surface of the cylinder 22.

24 is its air tube.

Reference numeral 25 denotes a cover box attached to the base 21, and a lever 26 is rotatably attached to the side surface of the cover box by a pin 27. Further, the lowermost tube 8a held by the bracket 6.7 communicates with the tunnel body 4,
The chip P inside the tube 8a is pushed into the tunnel body 4 by its own weight.
will be sent to. 28 is a window provided on the upper surface of the tunnel body 4, and 29 is a sensor that detects the presence or absence of the chip P inside the tunnel body 4 through the window 28, the operation of which will be described later.

FIG. 3 shows the inside of the cover box 25, and 32 is a support member disposed on the platform 21 so as to be slidable in the front and back direction, and is biased forward by a spring member 33. There is. The rear end of the lowermost tube 8a rests on the front support portion 32a of the support member 32.

A slider 35 is disposed on the upper part of the support member 32 so as to be slidable in the front-rear direction, and is biased forward by a spring member 36. A tapping portion 35a is provided protruding from the front portion of the slider 35.

This tapping portion 35a presses the tube 8a by the spring force of the spring material 36, so that the lower end of the tube 8a is pressed against the upper end 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 formed in a notch in the disc 37. It engages with the groove portion 39.

When the rod 56a protrudes forward, the lever 26 is pushed by it and rotates clockwise, the pin 38 is pushed rearward by the lower end of the lever 26, and the slider 35 retreats. Further, when the rod 56a retreats, the slider 35 moves forward due to the spring force of the spring member 36, and the striking portion 35a hits the tube 8.
Hit the rear end of the. By repeatedly advancing and retracting the rod 56a in this manner, the tube 8a is moved to the striking portion 35a.
The chip P in the tube 8a is reliably delivered to the tunnel body 4 due to the impact force, and the chip P gets caught in the tube 8a, making it impossible to deliver the chip P to the tunnel body 4. to prevent

Reference numeral 41 denotes a locking member slidably disposed on the top of the slider 35, and a locking portion 41a is protruded from the front portion.

This locking member 41 is connected to the rod 22a of the cylinder 22.
The pin 42 that is attached to and protrudes from the
It engages with a second groove 43 cut out in the disc 37.

Next, the operation of this exchange device 20 will be explained.

When the chip P is no longer detected by the sensor 29, it is determined that the chip P in the tube 8a is gone, and the tube 8 is replaced as follows. That is, the signal from this sensor 29 causes the cylinder 2 to
2 is activated, and the rod 22a protrudes. Then, the locking member 41 moves forward, and the locking portion 41a engages the second stage tube 8b.
Enter inside and lock it (see Figure 4). Further, the pin 42 moves forward together with the locking member 41, and the disk 37 is rotated clockwise by being pushed by the pin 42. Then, the pin 38 of the slider 35 is pushed by the edge of the groove 39 and retreats, and the slider 35 also retreats together with this. Then, the rear end 35b of the slider 35 is attached to the protrusion 32b protruding from the rear end of the support member 32.
The support member 32 is pushed back by the support member 32, the support member 32a retreats, and the tube 8a loses the support of the support member 32a and falls onto the arm IO.

When the lowermost tube 8a falls in this way, the rod 22a then retreats. Then, the locking member 41 retreats and the locking portion 41a separates from the tube 8b. Further, when the engaging member 41 retreats, the disc 37 is pushed by the pin 42 and rotates counterclockwise, and the slider 35 and the support member 32 are moved forward by the spring force of the spring members 33 and 36, and the second stage The eye dupe 8b falls onto the support portion 32a, and thereafter, the chip P is delivered to the tunnel body 4 from this tube 8b.

(iv) Regarding the chip transfer device C In FIG. 1, 43 is a receiving member for the chip P provided in front of the lower end of the tunnel body 4. As shown in Figure 6,
This receiving material 43 has a recess 45 formed in the upper surface of the receiving stand 44.
A plate 47 is attached to the top. The chip P sent out from the tunnel body 4 is transferred into the recess 45, but grooves 46 are formed on both sides of the recess 45 so as not to damage the lower end of the lead. Further, the plate 47 is mounted with bolts 49 through elongated holes 48 so that the position can be adjusted according to the dimensions of the chip P.

This receiving material 43 is placed in the receiving position (a) of the tunnel body 4 in a forward tilted position connected to the lower end of the tunnel body 4 shown in FIG.
The device receives the chips P ejected from the device, and then moves to the pick-up position (b) by the transfer head 71 in the front while changing its posture from a forward-leaning posture to a horizontal posture. Next, referring to FIG. Meanwhile, the moving device 40 for the receiving material 43 will be explained.

51 is a guide rail provided at the front of the base material 2, and 52 is a slider that slides along the guide rail 51 in the front-rear direction. A column 53 is erected at the front of the slider 52, and the receiving member 43 is rotatably supported by the column 53 by a pin 54. 55 is receiving material 4
3 and the slider 52, the receiving material 43
is biased counterclockwise around the pin 54. 56 is a cylinder as a driving device mounted on the back surface of the platform 3, and its second rod 56b is connected to the slider 52.
is attached to. A shaft 58 on which a coil spring 57 is attached is attached to the slider 52.
A plate 59 is attached to the tip of the shaft 58.

A cam 67 projects from the platform 3 (see also FIG. 1), is located below the lower end of the tunnel body 4, and has an inclined cam surface 68. In addition, the receiving material 43
A roller 69 that moves on this cam surface 68 is attached to the cam surface 68 .

This moving device 40 has the above-mentioned configuration, and its operation will be explained next.

When the cylinder 560 loft 56b protrudes, the slider 5
2 is a stopper portion 70 protruding from the tip of the base material 2
The receiving material 43 moves forward until it hits the pick-up position (b).
is positioned.

At this secondary pickup position (b), the receiving material 43 assumes a horizontal posture so that the transfer head 71 can easily pick up the chip P thereon. Next, when the rod 56b retreats,
The slider 52 also slides to the left in FIG. 5, the receiving material 43 also slides in the same direction, and the roller 69
8, the pedestal 43 rotates upward around the pin 54, and changes from a horizontal position to a forward tilted position. In this state, the receiving material 43 contacts the lower end surface of the tunnel body 4, the tunnel body 4 and the recess 45 of the receiving material 43 communicate with each other, and the chip P inside the tunnel body 4 slides down into the recess 45. In other words, the receiving material 43 is
In this manner, the chip P is positioned at the receiving position (a) in the forward leaning posture connected to the tunnel body 4.

Next, as the rod 56b moves forward, the receiving material 43 changes its posture from the forward tilted posture to the horizontal posture and moves to the pick-up position (b), and the chips P held therein are picked up by the transfer head 71. It is then transferred and mounted on the board 72.

The rod 56a of the exchanger 20 is attached to this cylinder 56.
The first rod protrudes and retracts in synchronization with the reciprocating motion of the receiving material 43 as the rod 56b protrudes and retracts, hits the tube 8a as described above, and moves the chip P inside the tube 8a into the tunnel body 4. It is something that is sent out. Next, with reference to FIG. 5, the chip fall prevention device 60 located at the lowest part within the tunnel body 4 will be explained.

A rotor 61 is attached to a pin 6 at the lower end of the tunnel body 4.
It is pivoted to 2. A pin 63 is erected on the upper surface of the tip end of the rotor 61, and the rotor 61 is urged upward by the spring force of the spring member 64, so that the pin 63 is erected.
3 pushes up the lowest chip P inside the tunnel body 4, presses this chip P against the upper surface inside the tunnel body 4, and prevents this chip P from falling.

Further, a pin 65 is vertically provided on the front lower surface of the rotor 61. This pin 65 is located inside the plate 59,
When the rod 56b retreats, the pin 65 is pushed by the plate 59 and retreats.

Then, the rotor 61 rotates clockwise around the pin 62 (see the chain line in the figure), and the pin 63 releases the pressed state of the chip P.

This chip fall prevention device 60 is driven by the same cylinder 56 as the receiving material 43, and operates in synchronization with the reciprocating movement of the receiving material 43. In other words, the receiving material 43 is at the receiving position (a)
When this occurs, the blocking state by the pin 63 is released, and the chip P slides down onto the receiving material 43 and is delivered. Also, receiving material 43
When the chip P leaves the lower end of the tunnel body 4 and moves from the receiving position (a) to the pick-up position (b), the pin 63 rises to prevent the lowest chip P from falling. In this way, this device performs (1) the beating action of the tube 8a by the rod 56a, (2) the reciprocating action of the receiving material 43 by the sliding of the slider 52, and (3) the chip P by the rotation of the rotor 61.
Since the fall prevention operations are performed by driving the same cylinder 56, these operations can be accurately synchronized.

(V) Regarding overall operation The chip 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 located at the receiving position (A). Next, as the rod 56b of the cylinder 56 protrudes, the receiving material 43 moves from the receiving position (a) to the pick-up position (b), and the chips P of the receiving material 43 are picked up by the transfer head 71. , are transferred and mounted on the board 72.

The chips P in the tube 8a are sent out into the tunnel body 4 one after another, but since the tube 8a is tubular, the flow of the chips P tends to stagnate. Therefore cylinder 56
By protruding and retracting the first rod 56a in synchronization with the reciprocating movement of the receiving material 43 by the second rod 56b, the lever 26 is intermittently rotated in a reciprocating manner, and the striking portion 35a causes the back of the tube 8a to be removed. The end face is struck to ensure that the chip P inside the tube 8a is sent into the tunnel body 4.

As described above, when the chips P are mounted one after another on the substrate 72 and the thousand chips P in the tube 8a are out of stock, the sensor 29 issues a signal to that effect, and the cylinder 22
The rod 22a protrudes. Then, as described above, the locking part 41a of the locking member 41 protrudes and locks the second stage tube 8b, and the support part 32a of the support member 32
moves backward, and the empty tube 8a falls into the collection section 10. Next, when the rod 22a retreats, the support part 35a moves forward, the locking part 411 returns and separates from the tube 8b, and the tube 8b rests on the support part 32a. Chip P is supplied to 4.

(Example 2) FIG. 7 shows another example of the tube stocker B. This stocker B is provided with a holder 83 for storing stacked tubes 82 on a support frame 81 inclined downward from the upper end of the tunnel body 4, and further provided with a pusher 83 at the bottom of the holder 83 for pushing up chips inside the tube 83. It is configured by disposing a device 84. 85 is the storage box.

The push-up device 84 includes a motor 86, a feed nut portion 87 driven by the motor 86, and a feed screw 8 that slides in an oblique direction.
It has 8. Further, a transfer device 90 is provided above the lowermost tube 82a. This transfer device 90
consists of an arm 92 that is driven by a rotary actuator 91 to rotate back and forth, and a suction pad section 93 that is vertically installed on this arm 92. 94 is tube 82
a holding bracket, 95 its mounting frame, 9
6 is a cylinder attached to this frame 95, 97
is a storage case provided on the bottom surface of the box 85.

Next, its operation will be explained.

When the motor 86 is driven, the pitch of the feed screw 88 increases, and the tip of the feed screw 88 enters the tube 82a and pushes up the chip P housed in the tube 82a. The pushed-up uppermost piece P is attracted to the suction pad part 93, transferred to the receiving part 98 at the upper end of the tunnel body 4, slides down the tunnel body 4, and is transferred to the receiving material 43. It will be done.

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

When the chip P in the tube 82a runs out, this is detected by a sensor (not shown), and the feed screw 88 descends at once and escapes from the tube 82a, and the cylinder 96 is actuated to move the bracket 94 to the tube 82a.
The tube 82a is slid in the direction of pushing the side wall surface of the tube 82a, and the tube 82a pushed thereby falls into the storage case 97 and is collected. Next, when the bracket 94 returns to its original position, the second stage tube 82b falls to the lowest position, and thereafter, the chip P in this tube 82b is supplied to the tunnel body 4 in the same manner as described above.

(Effects of the Invention) As explained above, the present invention includes a tube stocker that holds a tube in which a chip is stored in a forward tilted position, and a tube stocker that is connected to the front part of the tube stocker in a forward tilted position. It is equipped with a tunnel device that slides down the chips sent out from the tunnel device, and a chip transfer device provided at the bottom of the tunnel device. A receiving port is connected to the lower end in a forward-leaning position to receive the chips ejected from this tunnel device, and the position is changed from the forward-leaning position to a horizontal position and the received chips are picked up by the transfer head. a moving device for moving between two pick-up positions, and a moving device at the bottom of the tunnel device; A chip fall prevention device is installed to prevent the placed chips from falling, so the chips sent out from the tube are reliably delivered one by one to the receiving material and transferred to the pick-up position by the transfer head. can do.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a perspective view of the tube feeder, Fig. 2 is a side view of the same, Figs. 3 and 4 are internal side views of the exchange device, and Fig. 5 is a perspective view of the tube feeder. 6 is a side view of a moving device, FIG. 6 is a perspective view of a 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, chip tube...Movement device...Chip fall prevention device

Claims (1)

[Claims] A tube stocker that holds a tube containing a chip in a forward tilted position; a tunnel device that is connected to the front of the tube stocker in a forward tilted position and slides down the chip sent out from the tube; A chip transfer device provided at the lower part of the tunnel device is provided, and the chip transfer device is connected to a chip receiving material and the receiving material is connected to the lower end of the tunnel device in a forward tilted position, and the chip transfer device is connected to the lower end of the tunnel device in a forward tilted position. There are two positions: a receiving position where chips are ejected from the device, and a take-up position where the transfer head takes up the received chips by changing the posture from a forward-leaning position to a horizontal position.
and a moving device for moving between two positions, and a chip located at the bottom of the tunnel device falls into the lower part of the tunnel device with the receiving material moved from the receiving position to the take-up position. A tube feeder characterized by being provided with a chip fall prevention device that prevents chips from falling.