JP4464094B2 - Parts supply device - Google Patents

Description

  The present invention relates to a component supply apparatus that aligns and conveys components such as screws and rivets to a chute rail that extends horizontally.

Hereinafter, with reference to Patent Document 1 and Patent Document 2, the configuration and operational effects of a known component supply device 1 will be described with reference to FIGS.
As shown in FIGS. 5 to 7, the conventional component supply apparatus 1 has a frame 3 that is fixed upright on a base plate 2, and a rotational drive source 4 such as a motor is attached to the frame 3. The drive of the rotational drive source 4 is transmitted to the pulley 6 through the endless belt 5. The pulley 6 is fixed to one end of a main shaft 7 that is rotatably attached to the frame 3, and a guide roller 9 that rotates around the main shaft 7 as the main shaft 7 rotates is connected to the main shaft 7. . The guide roller 9 is engaged with the guide groove 10 a of the arm 10. The arm 10 is connected to a support plate 11 fixed to the frame 3 via a support shaft 12, and can swing about the support shaft 12 as a fulcrum. Further, a rake plate 14 is connected to the other end of the arm 10, and the rake plate 14 is configured to be always interposed in a basket 13 that stores a large number of screws S as an example of a component to be supplied. ing.

  The rake plate 14 has a fan shape, its small-diameter arc portion 14 a slides on the arc-shaped surface 11 a of the support plate 11, and the large-diameter arc portion 14 b slides on the arc-shaped surface 15 a of the partition plate 15 fixed to the basket 13. Move. A groove 14c is formed on the upper surface of the rake plate 14, and the upper surface of the head of the screw S is supported on the upper surface, and the leg portion of the screw S is loosely fitted in the groove 14c.

  On the other hand, a vibrator 16 is installed at the front portion of the frame 3, and a chute rail 17 that extends substantially horizontally is connected to the vibrator 16. This chute rail 17 is obtained by processing a groove 17a on a plate material with a cutter, and using the upper surface as a component support surface, the head of the screw S is supported here, and the leg portion of the screw S is loosely fitted in the groove 17a. The screw S is configured to be supported in such a posture. This posture is the correct posture of the screw S supported by the chute rail 17. The chute rail 17 is provided so as to extend forward on the swing path of the rake plate 14 and is configured such that the groove 14c of the raised rake plate 14 communicates with the groove 17a.

  A guide block 18 is attached to the support plate 11, and a slide shaft 19 that can reciprocate in parallel with the chute rail 17 is guided to the guide block 18. The slide shaft 19 is always urged toward the basket by a spring 19a, and an exclusion member 20 is attached to the tip thereof. A concave notch 20a that allows passage of the screw S supported in a correct posture by the chute rail 17 is formed in a lower portion of the exclusion member 20 that faces the chute rail 17. Further, a pin 21 is planted orthogonally on the slide shaft 19, and this pin 21 is engaged with a U groove 23 a of a lever 23 that is pivotally supported on the support plate 11 by a support shaft 22. Combined. The lower end portion of the lever 23 is formed on an arcuate surface 23b along the outer edge of the turning locus of the guide roller 9, and while this is in contact with the guide roller 9, the slide shaft 19 and the exclusion member 20 are connected to the spring 19a. Against the urging force, the chute rail is retracted in the component feed direction.

  Further, as shown in Patent Document 1, a pressing member 24 is disposed above the part alignment conveyance path in the chute rail 17 with a predetermined distance from the chute rail 17. The pressing member 24 is provided to prevent the screw S from being lifted by vibration of the chute rail 17.

  When the rotational drive source 4 is driven, the pulley 6 or the guide roller 9 rotates in response to the drive. At this time, since the guide roller 9 rolls along the guide groove 10a of the arm 10, the arm 10 or the rake plate 14 swings as shown in FIGS. When the rake plate 14 is raised, the screw S stored in the basket 13 is supported in a predetermined posture in the groove 14c of the rake plate 14 and is raked up. Then, the rake plate 14 stops at a top dead center for a predetermined time by the action of the shape of the guide groove 10a. For this reason, when the scooping plate 14 moves to the top dead center, the scooped screw S can slide down along the top surface of the scooping plate 14 and shift to the chute rail 17.

The chute rail 17 is vibrated by the drive of the vibrator 16, and the screw S transferred from the rake plate 14 is conveyed forward of the chute rail 17 by this vibration. When the rake plate 14 is lowered, the guide roller 9 is disengaged from the lever 23, and the urging force of the spring 19a causes the exclusion member 20 to move on the chute rail 17 parallel to the chute rail 17 toward the basket 13 side. To do. Due to the returning operation of the exclusion member 20, for example, a screw S that is not supported by the chute rail 17 in a correct posture (hereinafter, referred to as an unaligned screw) such as a screw S lying on the chute rail 17 is excluded. Is pushed back into the basket 13. In this way, only the screws S supported in the correct posture on the chute rail 17 are transported in alignment with the chute rail 17 and separated and supplied from the escapement 30 connected in front of the chute rail 17 to a screw fastening device (not shown) or the like. .
JP-A 62-79126 Microfilm of Japanese Utility Model No. 54-133541 (Japanese Utility Model Application No. 56-51714)

  The exclusion member 20 of the conventional component supply apparatus is a thin plate. For this reason, the unaligned screw may be sent to the front of the chute rail 17 by going around or over the exclusion member, and the unaligned screw could not be reliably removed from the chute rail. Further, since the screw may be lifted from the chute rail due to the vibration of the chute rail, the pressing member 24 is provided to prevent this. However, since the pressing member 24 does not exist for the stroke of the exclusion member 20, there is a problem that the screw is popped out and is clogged between the pressing member 24 and the chute rail 17.

In order to solve the above problems, the present invention provides a basket capable of storing a plurality of parts, a rake plate provided so as to be swingable in the basket under the drive of a driving source so as to scoop up the parts in the basket, A chute rail that extends in front of the swing path of the rake plate and supports the parts scooped up by the rake plate in a predetermined posture and conveys the parts, and is provided above the chute rail and is supported by the chute rails. A pressing member that suppresses lifting from the chute rail, and an exclusion member that is movably provided above the chute rail between the basket and the pressing member, and when the exclusion member moves to the basket side most The holding member has a length continuous to the chute rail in a predetermined posture on the chute rail facing surface in the longitudinal direction. A groove to permit passage of the lifting has been part formed, also on the extension of the pressing member narrower than the groove, and characterized in that the pressing member impenetrable, and upward to form a notch that is open To do. The exclusion member is preferably configured to reciprocate in parallel with the chute rail above the chute rail in conjunction with the swing of the rake plate.

  The exclusion member in the component supply device of the present invention has a length that is continuous with the pressing member when moved to the most basket side, and is supported on the chute rail in a predetermined posture on the chute rail facing surface in the longitudinal direction. A groove having a shape allowing passage of parts is formed, and a notch having a length that allows the pressing member to enter is formed on the extension of the pressing member, and the width of the notch and the width of the pressing member are made larger than the width of the groove. It is structured narrowly. Therefore, it is possible to eliminate the gap between the exclusion member and the pressing member, to reliably prevent the screw from lifting on the chute rail from the exclusion member to the pressing member, and to eliminate the occurrence of problems such as screw clogging, etc. There are advantages.

Hereinafter, the best embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a main part of a component supply apparatus according to the present invention. The component supply device according to the present invention has the same configuration as each component of the component supply device 1 described above. Therefore, only different components will be described in detail here, and the same components as those described above will be denoted by the same reference numerals and description thereof will be omitted.

  In the component supply apparatus of the present invention, a subrail 25 is provided between the chute rail 17 and the rake plate 14. The sub rail 25 has a substantially fan shape and is attached to the support plate 11. The sub rail 25 has a gap with the chute rail 17 to such an extent that it does not interfere with the vibration of the chute rail 17 driven by the vibrator 16. The small-diameter arc portion 14a is configured to slide in contact therewith.

  A groove 25b that can communicate with the groove 14c of the rake plate 14 and the groove 17a of the chute rail 17 is formed on the upper portion of the sub rail 25, and the leg portion of the screw S that moves from the rake plate 14 to the chute rail 17 is formed. It is configured to pass. Further, the rake plate 14 is configured to swing with the end portion on the small-diameter circular arc portion 14a side of the upper surface serving as a component support surface moving upward from the upper portion of the subrail 25 as a top dead center. That is, the shape of the guide groove 10a of the arm 10 is formed in a corresponding cam shape.

  Further, the lever 23 and the guide roller 9 are arranged such that the guide roller 9 is moved to the position where the component support surface of the rake plate 14 is completely lowered below the extension line of the chute rail 17 when the rake plate 14 is lowered. It is comprised so that it may remove | deviate from the arc-shaped surface 23b. That is, when the rake plate 14 is sufficiently lowered into the basket 13, the exclusion member 20 moves to the basket 13 side. This prevents the rake plate 14 from interfering when returning the misaligned screws into the basket 13.

  Further, as shown in FIGS. 1 to 4, the exclusion member 26 has a length that continues to the pressing member 24 even when it moves to the most side of the basket 13. Further, a groove 26a having a shape that allows passage of the head of a screw supported on the chute rail 17 in a predetermined posture is formed on the surface facing the chute rail 17 in the longitudinal direction of the exclusion member 26 over its entire length. ing. Further, a notch 26b of a length that allows the pressing member 24 to enter when the removing member 26 moves toward the pressing member 24 is formed on the extension line of the pressing member 24 of the exclusion member 26. The width of the notch 26b and the width of the pressing member 24 are configured to be narrower than the width of the groove 26a. Therefore, the screw can be prevented from jumping up from the chute rail 17 on the upper surface (ceiling surface) of the groove 26a.

  When the rake plate 14 swings to the above-described top dead center in response to the drive of the rotational drive source 4, the rake plate 14, the sub rail 25, and the grooves 14c, 25b, 17a of the chute rail 17 communicate with each other. The screw S scooped up by being supported by the groove 14a can slide down. At this stage, as shown in FIG. 3, the upper surface of the chute rail 17 is located on the extension of the upper surface of the rake plate 14. Accordingly, the screw S is directly transferred from the rake plate 14 to the chute rail 17 and is aligned and conveyed on the chute rail 17 that is vibrated by driving the vibrator 16. In this way, the structure in which the component support surface of the chute rail 17 is positioned on the extension of the component support surface of the rake plate 14 at the stage where the screw S slides down from the rake plate 14, so that the subrail 25 and the chute rail 17 The occurrence of problems such as clogging of the screw S in the gap portion is prevented.

  The rake plate 14 starts to descend after stopping at a top dead center for a certain time. At this time, since the guide roller 9 rolls in contact with the arcuate surface 23b of the lever 23, the exclusion member 20 is kept retracted to the pressing member 24 side against the bias of the spring 19a (FIG. 3). reference). In this state, the pressing member 24 enters the notch 26b. Thereafter, when the rake plate 14 is lowered to a position where the component support surface of the rake plate 14 is completely below the extension line of the chute rail 17, the guide roller 9 is detached from the arcuate surface 23b at this stage. In response to this, the exclusion member 26 returns to the basket 13 side by the bias of the spring 19a, and pushes the unaligned screws on the chute rail 17 back to the basket 13 (see FIG. 4). At this time, the screw supported in the correct posture by the chute rail 17 is not pushed by the exclusion member 26 because its head enters the groove 26 a of the exclusion member 26. Even when the exclusion member 26 is moved to the most side of the basket 13, the end portion of the pressing member 24 exists in the notch 26b. In other words, the exclusion member 26 and the pressing member 24 are always connected. Therefore, the screw S on the chute rail 17 is lifted by the vibration of the chute rail 17 until it reaches the lower side of the pressing member 24 and loses its posture. It is possible to prevent the occurrence of problems such as

  When the rake plate 14 starts to rise after reaching the bottom dead center, the guide roller 9 comes into contact with the tip of the lever 23 and swings the lever 23. Thereby, the exclusion member 20 compresses the spring 19a and retracts to the holding member 24 side.

It is a principal part expansion notched sectional view of the components supply apparatus which concerns on this invention. It is a principal part expansion schematic perspective view of the components supply apparatus which concerns on this invention. It is a principal part expansion notched sectional view of the components supply apparatus which concerns on this invention. It is a principal part expansion notched sectional view of the components supply apparatus which concerns on this invention. It is a front view of the conventional component supply apparatus. It is a principal part expanded partial notch sectional view of the conventional component supply apparatus. It is a principal part expanded partial notch sectional view of the conventional component supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 4 Rotation drive source 5 Endless belt 6 Pulley 7 Main shaft 9 Guide roller 10 Arm 11 Support plate 12 Support shaft 13 Basket 14 Rake plate 14c Groove 15 Partition plate 16 Vibrator 17 Shoot rail 17a Groove 18 Guide block 19 Slide shaft 19a Spring 21 Pin 22 Support shaft 23 Lever 25 Sub rail 26 Exclusion member 26a Groove 26b Notch 30 Escapement

Claims (2)

A basket capable of storing a plurality of parts;
A scooping plate that swings in the basket in response to driving of a driving source so as to scoop up the components in the basket;
A chute rail that is arranged extending in front of the oscillating path of the rake plate, and that supports and conveys the components raked up by the rake plate in a predetermined posture;
A holding member that is provided above the chute rail and suppresses the lifting of the parts supported by the chute rail from the chute rail;
An exclusion member provided movably above the chute rail between the basket and the pressing member;
The exclusion member has a length that is continuous with the pressing member when moved to the most basket side, and allows passage of parts supported by the chute rail in a predetermined posture on the chute rail facing surface in the longitudinal direction. And a notch having a width narrower than that of the groove, the pressing member being inserted therein, and an upper opening being formed on the extension of the pressing member.   The component supply device according to claim 1, wherein the exclusion member is configured to reciprocate in parallel with the chute rail above the chute rail in conjunction with the swing of the rake plate.

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