JP2000191131A - Article supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent abrasion of a guide frame of an article supply device to guide a supplying article. SOLUTION: A support member 27 is projected to the inside of a carrier passage 22 and clamps a supplying article 7 when moving a pressing pin 24 to a projecting position by a pressing pin drive device 26 by providing the support member 27 installed in an installation hole 31b formed on a guide frame 21 opposite to the pressing pin 24 free to connect and disconnect to and from it. As the pressing pin 24 is projected in a pressing position on the inside of the carrier passage 22 and clamps the supplying article 7 between the support member 27 and the pressing pin 24, the guide frame 21 forming the carrier passage 22 is not abrased, and it is possible to smoothly carry the supplying article 7. Additionally, it is possible to replace the support member 27 in the case when the support member 27 is abrased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article supply apparatus, and more particularly to an article supply apparatus capable of preventing a wall of a transport path from being worn.

[0002]

2. Description of the Related Art In manufacturing a resin-sealed electronic component, when printing a code such as a product number on the surface of a resin-sealed body, the resin-sealed electronic component is continuously supplied to a stamping machine. Further, when measuring the electrical characteristics of the manufactured resin-sealed electronic component, the resin-sealed electronic component is continuously supplied to a characteristic measuring device. On the other hand, when a resin-sealed electronic component such as a resin-sealed semiconductor device is mounted on a printed circuit board, the resin-sealed semiconductor device is supplied from the mounting machine to the printed circuit board at a predetermined timing. As described above, when the resin-encapsulated electronic component is continuously conveyed to the supply unit, a parts feeder (parts alignment supply machine) or a parts shooter (parts drop supply machine) is used.

As shown in FIG. 11, a conventional parts shooter (1) includes a cylindrical guide frame (2) and a guide frame (2).
The pressing pin (3) and the stop pin (4) slidably disposed in the holes (2e) and (2f) of (2), and the pressing pin (3) and the stop pin (4) are inserted into the hole (2e). (2f) Pin driving device that drives each within
(5) and (6) are provided. As shown in FIGS. 11 and 12,
A conveyance path (2c) is formed inside the guide frame (2),
On one side (2a) of the guide frame (2), the transport path (2c)
And a slit (2b) extending in the longitudinal direction thereof is formed. As shown in FIG. 12, a resin-sealed body (enclosed body) (9) of a supply article (7) such as an electronic component (resin-sealed semiconductor device) is provided on a transport path (2c) of the guide frame (2). Are slidably disposed, and the external terminals (8) derived from the resin sealing body (9) of the supply article (7) pass through the slits (2b) of the guide frame (2) and are formed on the guide frame (2). Stretch outward. The pressing pin (3) and the stop pin (4) are provided so as to be able to advance and retreat with respect to the supply article (7), respectively, and as shown in FIG.
, That is, into the transport path (2c).

During operation, the conveying path of the guide frame (2)
When a plurality of supplies (7) are continuously or intermittently supplied from the entrance (2d) of the guide frame (2c) with the stop pin (4) protruding into (2c), as shown in FIG. In addition, the plurality of supply articles (7) are locked by the stop pins (4) and arranged in alignment above the pins (4). Next, as shown in FIG. 14, the pressing pin (3) is projected inside the guide frame (2), and the second supply article (7) arranged above the stop pin (4) is pressed. It is held between (3) and the inner wall of the guide frame (2).
Subsequently, as shown in FIG. 15, when the pin driving device (6) is operated to pull out the stop pin (4) to the outside of the guide frame (2), the lowermost portion disposed just above the stop pin (4) is moved. Supplies
Only (7) is unlocked and the external terminal (8) falls out by its own weight along the guide frame (2) with the external terminal (8) extended to the side, but it was pinched by the pressing pin (3) The supply (7) and the supply (7) thereon do not fall. Thereafter, the pin drive device (6) is operated to cause the stop pin (4) to protrude into the transport path (2c), and the pin drive device (5) is driven to push the pressing pin (3).
Is retracted from the transport path (2c), the supply article (7) falls from above, stops on the stop pin (4), and the preparation state shown in FIG. 13 is obtained. In this way, the parts shooter (1) can use the pair of pressing pins (3) and the stop pins (4) to drop and supply the supply articles (7) one by one.

[0005]

By the way, as described above, the supply article is provided between the pressing pin (3) and the guide frame (2).
When (7) is repeatedly clamped, as shown in FIGS. 14 and 15, the inner wall of the guide frame (2) in contact with the supply article (7) pressed by the pressing pin (3) is locally worn, and the concave portion is formed. (1
0) is formed. Similarly, when the upper supply article (7) is pressed with the pressing pin (3), the supply article arranged thereunder is pressed.
(7) also inclines in the transport path (2c), the corners of which are in contact with the inner wall, and the recess (11) is formed. Concave on the wall of the transport path (2c)
When (10) and (11) are formed, the supply item (7) passing through the transport path (2c) is caught by the concave portions (10) and (11), and the supply item (7) jams in the transport path (2c). (Clogging) or sticking (sticking) occurs, preventing smooth supply of the supply article (7).
Therefore, an object of the present invention is to provide an article supply device that can prevent wear of a guide frame that guides an article to be supplied.

[0006]

An article supply apparatus according to the present invention comprises a guide frame (21) forming a transport path (22) for continuously transporting a plurality of supply articles (7) downward, and a transport path (22). twenty two)
A stop pin (23) movable between a protruding position for preventing the supply article (7) from dropping under its own weight along with the retracted position allowing the supply article (7) to drop under its own weight away from the transport path (22). The supply material (7) disposed in the transport path (22) above the lowermost supply material (7) held by the stop pin (23) is pressed against the guide frame (21) to supply the supply material. (7) a pressing pin (24) movable between a pressing position for preventing the dropping and a retraction position for releasing the pressing, and a stop pin between the protruding position and the retraction position.
(23) a stop pin drive (25), a push pin drive (26) for driving a push pin (24) between a push position and a retracted position, a push pin drive (26) and a stop Pin drive
(25) and a pin drive control circuit that operates at a predetermined timing. This article supply device includes a support member (27) detachably mounted in a mounting hole (31b) formed in the guide frame (21) so as to face the pressing pin (24). When the pressing pin (24) is moved to the protruding position by the pressing pin driving device (26), the support member (27) protrudes inside the transport path (22) to pinch the supply article (7).

A pressing pin (24) protrudes to a pressing position inside the transport path (22) to feed the supply article (7) to the support member (27) and the pressing pin (2).
4), the guide frame (21) forming the transfer path (22) is not worn, and the supply article (7) can be transferred smoothly. Further, when the support member (27) is worn, the support member (27) can be replaced. In the embodiment of the present invention, the support member (27) is screwed into the mounting hole (31b). The support member (27) projecting into the transport path (22) is
7d). The support member (27) is a support member driving device (50)
The extended position protruding into the transport path (22) by the
It is movably arranged between the retracted position and the retracted position.
The support member driving device (50) may be operated by the pressing pin driving device (26).

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an article supply apparatus according to the present invention applied to a parts shooter for supplying electronic components will be described below with reference to FIGS.

As shown in FIG. 1, an article supply device (20) according to the present invention includes a conveying path formed of metal or hard resin.
Guide frame (21) forming (22), and guide frame
(21) is disposed on one frame piece (31) side, and is supplied along the transport path (22) at a protruding position for preventing the supply article (7) from falling by its own weight and separated from the transport path (22). Stop pin (23) movable between retracted positions to allow the article (7) to fall under its own weight
A stop pin driving device (25) for driving a stop pin (23) between a protruding position and a retracted position, and a supply article disposed on the other frame piece (32) constituting the guide frame (21), and
(7) is pressed against the guide frame (21) to supply articles (7).
A pressing pin (24) movable between a pressing position for preventing the falling of the pressure and a retraction position for releasing the pressing, and a pressing pin driving device (26) for driving the pressing pin (24) between the pressing position and the retraction position And A plurality of supply articles (7) that fall downward by their own weight are arranged in the transport path (22) of the guide frame (21) in a vertically aligned manner. A stop pin (23) for preventing the supply article (7) from dropping under its own weight along the transport path (22) has one frame piece (3
1) penetrated through the side hole (31a) formed in
The spring (34) presses the transfer path (22) against the transfer path (22). The pressing pin (24) is disposed so as to penetrate the side hole (32a) formed in the other frame piece (32), and is pressed against the holder (35) by the spring (36) toward the transport path (22). You. The holders (33) and (35) are respectively transported by a pneumatic actuator such as an air cylinder or a stop pin driving device (25) and a pressing pin driving device (26) configured by an electric device such as a solenoid or a motor. 22) between the protruding position or the pressing position protruding inside and the retracted position separated from the conveyance path (22).
Operated in (31a) and (32a). The upper end of the guide frame (21) is connected to a parts feeder (not shown), and the lower end is connected to a stamping machine (not shown). In some cases, the parts feeder and the stamping machine are provided integrally with the parts shooter (21) as a transport path.

[0010] A mounting hole (31b) having an internal thread is drilled above the side hole (31a) at substantially the same height as the side hole (32a), and an external screw is mounted in the mounting hole (31b). The formed support member (27) is screwed. The support member (27) is made of metal or hard resin. As shown in FIGS. 2 and 3, one frame piece (31) is attached to a side wall (41), a front wall (42) connected to the side wall (41) and arranged at the front, and a side wall (41). It is formed in a channel-shaped cross-section with a rear wall (43) connected and arranged at the rear, and an elongated channel (47) is formed inside. Similarly, the other frame piece (32) is connected to the side wall (44), the front wall (45) connected to the side wall (44) and arranged at the front part, and connected to the side wall (44) and arranged at the rear part. And an elongated groove (48) is formed on the inside. Front wall (42) of one frame piece (31) and front wall (45) of the other frame piece (32)
A gap (49) for forming the external lead (8) of the supply article (electronic component) (7) is formed between
The rear wall (43) of the (31) and the rear wall (46) of the other frame piece (32) are in close contact with each other, and the transport path (22) is formed by the elongated grooves (47) and (48). Since the support member (27) is detachably screw-connected to the mounting hole (31b), the protrusion amount with respect to the transport path (22) can be adjusted, and the support member (27) can be replaced by removing the screw. Although not shown, a pin drive control circuit for operating the pressing pin driving device (26) and the stop pin driving device (25) at a predetermined timing is provided. The difference between the article supply device (20) according to the present invention and the conventional parts shooter is that the guide frame (2
The point of 1) is that the support member (27) for preventing the inner wall from being worn is exchangeably mounted on the guide frame (21).

In the above configuration, when a plurality of supplies (7) are filled in the transport path (22) with the stop pin (23) arranged at the projecting position that first projects into the transport path (22), the supply Goods
(7) falls by its own weight along the transport path (22), the lowermost supply (7) is stopped by the stop pin (23) at the projecting position,
The filling state shown in FIG. 5 is obtained. In this state, the pressing pin driving device (26) is operated to move the pressing pin (24) from the retracted position to the pressing position, and to protrude into the transport path (22), and as shown in FIG. Supplies immediately above the supplies (7)
(7) is pressed against one frame piece (31). In this case, the supply article (7) directly contacts the support member (27),
Contact with one frame piece (31) is avoided, wear of the one frame piece (31) is prevented, and the corner of the supply article (7) abuts against the inner wall of the transport path (22) as in the related art. No wear occurs. Further, since the supply article (7) is separated from the inner wall by the pressing pin (24) and held in a vertical state and does not become inclined, when the pressing pin (24) is moved to the retracted position, the supply article (7) Can be smoothly dropped downward.

In this state, as shown in FIG. 7, when the stop pin driving device (25) is operated to move the stop pin (23) from the projecting position to the retracted position and separate from the transport path (22), The lowermost supply article (7) is disengaged from the stop pin (23) and falls downward through the transport path (22). In this case, the supply article (7) disposed immediately above the lowermost part is held in a state of being pressed against the support member (27) by the pressing pin (24) and does not drop. Thereafter, as shown in FIG. 5, the stop pin driving device (25)
To move the stop pin (23) from the retracted position to the protruding position, to protrude into the transport path (22), and to operate the pressing pin driving device (26) to move the pressing pin (24) to the pressing position. From the transport path (22). For this reason,
The supply (7) in the transport path (22) moves downward and stops
(23) is held on. Subsequently, as shown in FIG. 6, the pressing pin driving device (26) is operated, and the pressing article (24) is used to move the feeding article (7) immediately above the lowermost feeding article (7) into one frame piece ( 31) and the stop pin drive (2
5) is operated to move the stop pin (23) from the retracted position to the protruding position, and to protrude into the transport path (22). By repeating the above operation, the supply article (7) can be conveyed continuously and smoothly downward.

Various modifications can be made to the embodiment of the present invention. For example, as shown in FIG.
The head portion (27b) having a large diameter provided at the end of (27a) may be arranged on the side of the transport path (22), and the support member (27) may be fixed to one frame piece (31). Head (27b) and transport path (2
Apply adhesive paint to the wall of 2) or use a nut (27
The support member (27) can be fixed to one of the frame pieces (31) by attaching the c) to the end of the shaft (27a). Also, an annular inclined surface (27d) is formed on the head portion (27b) to supply articles (7).
Can smoothly fall in the transport path (22). FIG.
Is to deform the support member (27) of FIG. 8 to form an inclined surface (27d) only on the upper side inside the support member (27) fixed to one frame piece (31) by the mounting screw (39). Can be.

Further, as shown in FIG. 10, a conveying path (22) is driven by a support member driving device (50) composed of a solenoid.
The support member (27) may be disposed so as to be movable between an extended position protruding inward and a retracted position separated from the transport path (22). The support member (27) has an opening (5) formed in the frame (53).
3a), the flange (52) of the support member (27) and the frame
A spring (51) wound around the support member (27) between the spring (51) and (53).
Is constantly biased toward the transport path (22).
When the supply article (7) passes near the end of the support member (27), the end of the support member (27) does not protrude into the transport path (22) so as not to hinder the passage of the supply article (7). , Support member drive (50)
Can be electrically operated to move the support member (27) to the retracted position against the elasticity of the spring (51). In this case, the supporting member driving device (50) may be shared with the pressing pin driving device (26), or the supporting member driving device (50) may be operated by the pressing pin driving device (26). Although the present invention has been described with respect to the article supply apparatus for electronic components, the present invention can also be applied to a case where another component using its own weight is supplied downward. In the above-described embodiment, an example in which the supply articles (7) are supplied one by one downward has been described. However, by changing the position where the pressing pin (24) is installed, two or more supply articles (7) are provided. 7) may be configured to be supplied downward.

[0015]

According to the present invention, the guide frame forming the transfer path is not worn and the feed article can be transferred smoothly, and the feed article such as electronic parts can be guided stably for a long period of time. Can be. In addition, since the support member can be easily replaced, an article supply device excellent in productivity and cost can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an article supply device according to the present invention.

FIG. 2 is a lateral sectional view of the article supply device according to the present invention.

FIG. 3 is an exploded perspective view of a guide frame used in the article supply device according to the present invention.

FIG. 4 is a front view of the article supply device according to the present invention.

FIG. 5 is a cross-sectional view showing a state where a supply article is held by a stop pin.

FIG. 6 is a cross-sectional view showing a state in which a supply pin is provided above the lowermost part by a pressing pin;

FIG. 7 is a sectional view showing a state in which a stop pin is released.

FIG. 8 is a longitudinal sectional view showing a second embodiment of the article supply device according to the present invention.

FIG. 9 is a longitudinal sectional view showing a third embodiment of the article supply device according to the present invention.

FIG. 10 is a longitudinal sectional view showing a fourth embodiment of the article supply device according to the present invention.

FIG. 11 is a longitudinal sectional view of a conventional parts shooter.

FIG. 12 is a cross-sectional view of a conventional parts shooter in a lateral direction.

FIG. 13 is a cross-sectional view showing a state in which a supply article is held by a stop pin of a conventional parts shooter.

FIG. 14 is a sectional view showing a state in which a supply pin above a lowermost part is held by a pressing pin of a conventional parts shooter.

FIG. 15 is a sectional view showing a state in which a stop pin of a conventional parts shooter is released.

[Explanation of symbols]

(7) ・ ・ Supplies, (21) ・ Guide frame, (22)
・ ・ Conveyance path, (23) ・ ・ Stop pin, (24) ・ ・ Press pin, (25) ・ ・ Stop pin drive, (26) ・ ・ Press pin drive, (27) ・ ・ Support member, ( 27d)
(31b) ・ ・ Mounting hole, (50) ・ ・ Support member drive device,

Claims (5)

[Claims] A guide frame for forming a transport path for continuously transporting a plurality of supply articles downward, a projecting position along the transport path for preventing the supply articles from dropping under their own weight, and being separated from the transport path. A stop pin movable between a retracted position that allows the supply article to drop under its own weight, and the supply article disposed in the transport path above the lowermost supply article held by the stop pin. A pressing pin movable between a pressing position for pressing the frame to prevent the supply article from dropping and a retraction position for releasing the pressing; and a stop pin driving for driving the stop pin between a protruding position and a retraction position. A device, a pressing pin driving device for driving the pressing pin between a pressing position and a retracting position, and a pin driving control for operating the pressing pin driving device and the stop pin driving device at a predetermined timing. An article supply device comprising a circuit, a supporting member detachably mounted in a mounting hole formed in the guide frame in opposition to the pressing pin, wherein the pressing pin driving device projects the pressing pin. The article supply device, wherein the support member projects to the inside of the transport path to hold the supply article when moving to a position. 2. The article supply device according to claim 1, wherein said support member is screwed into said mounting hole. 3. The article supply device according to claim 1, wherein the support member protruding into the transport path has an inclined surface. 4. The apparatus according to claim 1, wherein the support member is movably disposed between an extended position protruding into the transport path by a support member driving device and a retracted position separated from the transport path. Article supply device. 5. The article supply device according to claim 4, wherein the support member driving device is operated by the pressing pin driving device.