JP4860996B2 - Parts supply device - Google Patents

Description

  The present invention relates to a component supply device that aligns and supplies rods such as screws and stud bolts housed in a hopper to a conveying chute.

  Conventionally, various apparatuses for aligning and supplying bars such as screws, bolts, rivets, pins and the like have been developed. Above all, in order to reduce mistakes in supplying bar material, the conveying chute for aligning the bar material is arranged almost horizontally, and this is vibrated to align the bar material on the conveying chute and supply it to the tip of the conveying chute. The component supply apparatus made to do is common. As this type of apparatus, there is a screw supply apparatus that supplies an example of a bar material. As shown in FIG. 6, the screw supply device 1 includes a hopper 7 that houses a screw (not shown), a conveyance chute 5 that protrudes at one end into the hopper 7 and extends substantially horizontally, and a conveyance chute within the hopper 7. 5 includes a hopper blade 41 that moves up and down along the end of the vibrator 5, and a vibrator section 4 that vibrates the conveying chute 5. The hopper blade 41 has an arcuate surface shape, and one end of the hopper blade 41 is fixed to an arm 42 rotatably held. The arm 42 is provided with a cam groove 42a, and a cam follower 44 attached to a turning lever 43 that turns by receiving the rotation of a motor (not shown) is engaged with the cam groove 42a. When the cam follower 44 is turned together with the turning lever 43, the cam follower 44 is configured to roll along the cam groove 42a so as to raise and lower the hopper blade 41 while drawing an arc. The hopper blade 41 has a rake groove 41 a on the upper surface, and is configured to scoop up the screw in the hopper 7 and to supply it to the screw guide path of the transport chute 5 when it is raised.

JP-B-5-67540

  In this screw supply device, the arm 42 is rotated with the rotation of the motor, and the hopper blade 41 is moved up and down at the same time. However, if the surface of the screw stored in the hopper 7 is sticky due to the influence of the plating film, the screw scooped up by the hopper blade 41 adheres to the upper surface of the hopper blade 41, so There are some disadvantages such as not sliding down. In addition, when a large number of screws of this type are stored in the hopper 7, when the supply of screws proceeds to some extent, the large number of screws solidify in a bridge shape so as to surround the passage of the hopper blade 41. In other words, the screw cannot be picked up well and the screw cannot be supplied to a screw tightening tool (not shown).

For the purpose of solving the above-mentioned problems, the present invention provides a transport chute disposed in an upper part of a hopper for housing components, and provided with a hopper track that is positioned on a side surface of the transport chute and can be moved up and down in the hopper. In the component supply device that is provided with lifting means for moving up and down along the side surface of the conveyance chute, while forming the upper surface of the hopper track to be inclined to the conveyance chute side and capable of protruding upward from the conveyance chute,
Slightly disposed a guide plate so as to protrude upward from the hopper tracks between the hopper track and the conveying chute, until just before the the guide plate and the hopper track upper end of the guide plate to reach the upper surface of the conveyance chute Only the hopper track is raised until the upper end of the hopper track protrudes from the upper surface of the transport chute . Further, the hopper track and the guide plate may be arranged at a position sandwiching the conveyance chute. Further, the elevating means may be composed of an elevating plate that holds the hopper track, a lever that is rotated by the rotation of the rotation drive source, and a roller that is held by this lever and is positioned below the elevating plate.

  According to the present invention, as the hopper track rises along the side surface of the conveyance chute, the bar material in the hopper is scooped up in a posture in which it lies on the upper surface of the hopper track. When the hopper truck further rises and its upper surface protrudes above the upper surface of the conveying chute, the bar material lying on the upper surface rolls down to the conveying chute along the inclination of the upper surface of the conveying chute, and the bar with the head The bars are aligned in an upright position and the bars without heads are aligned in a horizontal position. At this time, since the conveyance chute is driven to move the bar to the forward end side, the bar aligned in the conveyance path can be supplied to the advance end of the conveyance chute. Moreover, since the bar can be supplied from both sides of the transport chute, the bar can be efficiently aligned. Furthermore, since a guide plate is provided between the side surface of the conveyance chute and the hopper track, the bar does not contact the side surface of the conveyance chute when the hopper track rises along the side surface of the conveyance chute, Wear on the surface of the bar can be suppressed. Furthermore, since the lifting / lowering means of the hopper track uses a rotational drive source, the lifting / lowering cycle of the hopper track can be arbitrarily changed.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. In FIG. 1 to FIG. 4, reference numeral 1 denotes a component supply device, which has a frame 3 fixed to a base 2. The frame 3 includes a feeder mounting base 3a and a hopper mounting portion 3b. A feeder chute 5 is provided on the feeder mounting base 3a through the vibrator portion 4 so as to extend slightly horizontally. The conveying chute 5 has a screw guide path 5a for guiding a screw 6 as an example of a bar in the extending direction, and one end of the conveying chute 5 projects into a hopper 7 described later. The retracted end of the conveying chute 5 is closed so that the screw 6 does not fall, and the advanced end is opened so that the screw can be supplied to a screw separating and supplying unit 8 described later. A bearing block 9b is fixed above the conveying chute 5 via an exclusion piece mounting plate 9 fixed to the frame 3, and an intermediate double-row pulley 30 is rotatably held on the bearing block 9b. Yes. An exclusion piece mounting block 9a is attached to the bearing block 9b, and an exclusion piece 10 is rotatably arranged on the exclusion piece mounting block 9a. The exclusion piece 10 has a blade portion 10 a that passes the screw 6 held in an upright posture on the conveyance chute 5 and kicks off the unaligned screw 6 on the conveyance chute 5. Further, the exclusion piece mounting block 9a is provided with a first pulley 11 that rotates integrally with the exclusion piece 10, and the rotation of the motor 12, which will be described later, is excluded via the intermediate double-row pulley 30 and the first belt 31. 10 is transmitted.

  A screw separation and supply unit 8 is disposed on the feeder mounting base 3 a so as to surround the forward end of the transport chute 5 via a unit mounting tool 13. The screw separating and supplying unit 8 includes a unit main body 14 provided with a block guide groove 14a and a screw extraction hole 14b communicating with the block guide groove 14a, a shuttle block 15 disposed in the block guide groove 14a, and an upper lid 16 covering the upper part. have. The shuttle block 15 has a screw guide groove 15a in which the screw 6 supplied to the tip of the transport chute 5 falls, and the cylinder 17 is operated to reciprocate in the direction crossing the transport chute 5 to move the most advanced screw 6. Are separated from each other and supplied to a predetermined position through a hose connection pipe 18 and a supply hose (not shown) from the screw take-out hole 14b.

  The hopper mounting portion 3b is fixed so that the two divided hoppers 7 are joined to each other so as to sandwich a partition plate 19 having an inclined bottom surface and extending in the same width as the conveyance chute 5, and on both sides of the partition plate 19 A storage space for storing the screw 6 is formed. Two guide shafts 20 fixed so as to extend in parallel to the base 2 are connected to the lower portion of the partition plate 19 via a fixture 2 a, and a first lifting and lowering described later along the guide shaft 20. The plate 21 and the second elevating plate 22 are configured to be movable up and down.

The hopper 7 has rectangular cutouts 7a located on both sides of the partition plate 19, and a hopper track 23 is slidably disposed along the partition plate in each cutout 7a. These hopper tracks 23 are fixed to a first elevating plate 21 that horizontally extends below, and when the first elevating plate 21 reaches the uppermost position, the upper end thereof reaches a position protruding above the conveying chute 5. It is configured. Also, the hopper track 23 have respective guide grooves 23a extending upward on the side in contact with the partition plate 19 and the clearance groove 23b communicating with this, each guide plate 24 is slidably and hopper into the guide groove 23a It is guided so as to protrude upward from the track 23. These guide plates 24 have a locking groove 24a on the lower side, and a protrusion 22a of a second lifting plate 22 disposed so as to extend in parallel with the first lifting plate 21 is engaged with the locking groove 24a. The guide plate 24 is configured to move up and down together with the second lifting plate 22. The second elevating plate 22 is urged by a spring 25 so as to keep the gap with the first elevating plate 21 constant at all times. Even if the second elevating plate 22 comes into contact with the bottom of the hopper 7 and stops. The 1st raising / lowering plate 21 is comprised so that it can raise independently.

  In the vicinity of the first and second elevating plates 21 and 22, elevating means 26 is provided. The elevating means 26 includes a rotating shaft 26d that is rotatably held by a bearing base 26c, a lever 26b that rotates integrally therewith, and a roller 26a that is attached to one end thereof. The roller 26a is positioned below the first elevating plate 21 and is in contact with the lower surface thereof. When the second pulley 26e attached to the tip of the rotating shaft 26d rotates, the roller 26a rotates together with the lever 26b, and the first The elevating plate 21 is configured to move up and down.

  On the other hand, a motor 12 as a rotational drive source is attached to the lower part of the frame 3 via a motor attachment plate 28, and a double-row pulley 29 is fixed to a drive shaft (not shown). The double row pulley 29 is connected to the intermediate double row pulley 30 via the second belt 32, and the rotation of the double row pulley 29 is transmitted to the reject piece 10 via the intermediate double row pulley 30. Has been. The rotation of the double row pulley 29 is transmitted to the second pulley 26e via the third belt 33, and the raising / lowering means 26 is actuated by the rotation of the second pulley 26e, and the first raising / lowering plate 21 and The second elevating plate 22 is configured to move up and down along the guide shaft 20.

  In the component supply apparatus, when a screw is supplied into the hopper 7, the motor 12 rotates at a rotation speed corresponding to the lifting cycle of the hopper track 23. This rotation is transmitted to the second pulley 26e via the double row pulley 29, and the lever 26b turns. As the lever 26b turns, the roller 26a at one end thereof turns, and the roller 26a pushes it up while rolling on the lower surface of the first elevating plate 21. Therefore, the first elevating plate 21 and the second elevating plate 22 rise integrally, and the hopper track 23 integral with the first elevating plate 21 and the guide plate 24 integral with the second elevating plate 22 begin to rise. At this time, the hopper track 23 scoops up the screw 6 lying on its upper surface while pushing away the screw 6 located at the bottom of the hopper 7.

  When the roller 26a reaches near the uppermost position, the second elevating plate 22 comes into contact with the bottom of the hopper 7 and stops at that position. As the second elevating plate 22 stops, the guide plate 24 also stops at that position, and its upper end stops immediately before reaching the upper surface of the transport chute 5. Thereafter, as shown in FIG. 5, when the roller 26a rises to the uppermost position, the first elevating plate 21 rises alone to the uppermost position, so that the hopper track 23 rises with respect to the guide plate 24, and the upper end thereof is the conveying chute. It protrudes from the upper surface of 5. Therefore, the screw 6 lying on the upper surface of the hopper track 23 only makes the outer periphery of the head and the outer periphery of the leg abut on the upper surface of the conveying chute 5, so that even if the surface of the screw 6 has a little stickiness, the conveying chute 5 smoothly rolls along the inclination of the upper surface of 5 and reaches the conveyance chute 5, and its leg is positioned on the screw guide path 5a and aligned in an upright posture. At this time, the conveyance chute 5 is vibrated by the drive of the vibrator unit 4, and the screw 6 aligned with the conveyance chute 5 is supplied to its forward end. Further, a screw 6 that is not aligned on the conveying chute 5 is also supplied to the forward end side. However, when the screw 6 reaches below the removal piece 10, the removal piece 10 is rotated by the rotation of a motor (not shown). Therefore, except for the screw which is not in an upright posture, the removal piece 10 kicks it into the hopper 7. Therefore, only the screw 6 in the upright posture reaches the screw separation supply unit 8 and is separated from the most advanced one, and is predetermined from the screw extraction hole 14b via the hose connection pipe 18 and the supply hose (not shown). Air is fed to the position.

Further, when the screw 6 in the hopper 7 is scooped up by the hopper track 23, there is no horizontal portion at the bottom of the hopper 7, so that the screw 6 can be scooped up without leaving the screw 6. Furthermore, since the hopper track 23 always protrudes upward from the conveying chute 5 when it rises, even if a large number of screws 6 are stored, it can be pushed away, so that many screws 6 may be hardened in a bridge shape. None.

It is a principal part expanded sectional view along the AA line of FIG. It is a principal part notched front view which shows the state which removed the case of this invention. It is a top view of the present invention. It is a principal part expanded sectional view along the BB line of FIG. It is explanatory drawing explaining the operation state of this invention. It is a principal part notch front view which shows the state which removed the case of the conventional component supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parts supply apparatus 2 Base 2a Fixing tool 3 Frame 3a Feeder mounting base 3b Hopper mounting part 4 Vibrator part 5 Conveying chute 5a Screw guideway 6 Screw 7 Hopper
7a Notch 8 Screw separation supply unit 9 Exclusion piece mounting plate 9a Exclusion piece mounting block 9b Bearing block 10 Exclusion piece
10a Feather
11 First pulley
DESCRIPTION OF SYMBOLS 12 Motor 13 Unit mounting tool 14 Unit main body 14a Block guide groove 14b Screw extraction hole 15 Shuttle block 15a Screw guide groove 16 Upper lid 17 Cylinder 18 Hose connection pipe 19 Partition plate 20 Guide shaft 21 First lift plate 22 Second lift plate 22a Projection Part 23 Hopper track 23a Guide groove 23b Escape groove 24 Guide plate 24a Locking groove 25 Spring 26 Lifting means 26a Roller 26b Lever 26c Bearing base 26d Rotating shaft 26e Second pulley 28 Motor mounting plate 29 Double row pulley 30 Middle double row pulley 31 First belt 32 Second belt 33 Third belt

41 Hopper blade 41a Rake groove 42 Arm 42a Cam groove 43 Rotating lever 44 Cam follower

Claims (3)

A lifting chute is arranged on the upper side of the hopper for storing the parts, a hopper track is provided on the side surface of the feeding chute and can be moved up and down in the hopper, and the hopper track is moved up and down along the side surface of the feeding chute. On the other hand, in the component supply device that is formed so that the upper surface of the hopper track is inclined toward the conveyance chute and can protrude upward from the conveyance chute,
Slightly disposed a guide plate so as to protrude upward from the hopper tracks between the hopper track and the conveying chute, until just before the the guide plate and the hopper track upper end of the guide plate to reach the upper surface of the conveyance chute A component supply device characterized in that the hopper track is lifted as a unit, and then only the hopper track is raised until the upper end of the hopper track protrudes from the upper surface of the conveying chute . The component supply device according to claim 1, wherein the hopper track and the guide plate are arranged at positions sandwiching the conveyance chute. The elevating means includes an elevating plate that holds a hopper track, a lever that rotates by receiving rotation of a rotation drive source, and a roller that is held by the lever and is positioned below the elevating plate. The component supply apparatus according to claim 1 or 2 .

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