JP6901790B2 - Parts feeder - Google Patents

Description

The present invention relates to a parts feeder capable of continuously taking out axial parts while aligning them in a standing posture with their axial centers facing in the vertical direction.
In the present specification, a member (for example, a bolt, a rivet, a pin with a collar, a nail, etc.) having a large diameter portion protruding outward in the radial direction at one end or a middle portion of the shaft is referred to as a “part”.

There is a well-known parts feeder in which, for example, bolts 100 (see FIG. 10) randomly stored in a predetermined input space are continuously taken out by aligning their male screw portions 101 in a standing posture.
In this type of parts feeder, as shown in FIG. 10, two rails 102 and 103 are arranged side by side, and the male screw portion 101 of the bolt 100 is sandwiched between the grooves 104 formed between the two rails 102 and 103. Then, the bolt 100 is conveyed along the groove 104 while giving vibration to both rails 102 and 103 (see Patent Document 1 and the like).

In FIG. 10, the two rails 102 and 103 (grooves 104) are drawn in a state of being tilted at the same angle, but on the downstream side (not shown) in the transport direction from the shown position, the two rails 102. , 103 (grooves 104) were raised vertically, whereby the bolt 100 was changed to a standing posture (that is, with the angle change of the rails 102 and 103).

Japanese Unexamined Patent Publication No. 2014-198634

As seen in the parts feeder shown in FIG. 10, when the posture of the bolt 100 is changed, if a structure is adopted in which both sides of the lower surface of the bolt head 105 are supported (scratched) by two rails 102 and 103, the contact area becomes large. As the size increases, the transport resistance of the bolt 100 becomes excessive. Therefore, it can be pointed out that when the vibration applied to the two rails 102 and 103 acts as the propulsive force of the bolt 100, it acts as a brake and the propulsion efficiency is not sufficient.

As a general rule, the mutual distance between the two rails 102 and 103 (groove width of the groove 104) is slightly wider than the male screw portion 101 (shaft diameter) of the bolt 100 to maintain the clearance 106 with respect to the male screw portion 101. It is inevitable to let them do it. Therefore, when the bolt 100 is vibrated, the direction in which the bolt 100 (male screw portion 101) vibrates with respect to the clearance 106 in the groove 104 cannot be obtained, and in the figure, it is not possible to obtain a rule. Random vibrations (dances and rampages occur), as indicated by the radial arrows.

Moreover, the bolt 100 when it jumps up from the rails 102 and 103 vibrates not only in the radial direction indicated by the arrow but also in the front-rear direction in the transport direction, and further, rotation around the male screw portion 101 is added. As described above, since the vibration state of the bolt 100 is not determined at all, a deviation occurs between the timing when the lower surface of the bolt head 105 contacts the upper end portion of the rail 102 and the timing when it contacts the upper end portion of the rail 103.

Due to these factors, the transport pitch of the bolt 100 tends to be disjointed, and in a serious case, the bolt 100 is clogged and stops, causing congestion and confusion, or falling off from the rails 102 and 103 (groove 104). There were times when it happened.
Not only that, as shown in FIG. 11, since the bolt 100 is provided with the fillet 107 due to the rounded surface at the inner corner between the lower surface of the bolt head 105 and the male screw portion 101, the fillet 107 is the rail 102. The posture of the bolt 100 may become more unstable due to interference with the edge portion 108 facing the groove 104 of the 103.

From these facts, it can be said that the efficiency of taking out parts such as the bolt 100 in a predetermined posture is not always good in the conventional parts feeder.
The present invention has been made in view of the above circumstances, and it is possible to reliably change the posture while transporting a part having a large diameter portion extending outward in the radial direction at one end or a middle portion of the shaft with high efficiency. An object of the present invention is to provide a parts feeder that enables continuous take-out.

In order to achieve the above object, the present invention has taken the following measures.
That is, the parts feeder according to the present invention has an inclined support surface for tilting and supporting the shaft and a portion having a large diameter at one end or an intermediate portion of the shaft. A feed bed having a fall prevention edge for engaging the feed bed, a vibrator that applies transport vibration to the feed bed, and a posture changing portion that extends from the downstream end of the feed bed in the transport direction to the downstream direction thereof. The posture changing portion is provided with a single rail that is arranged downstream while maintaining a height that does not exceed the fall prevention edge at a position downstream of the fall prevention edge in the feed bed, and the single. It has a support table arranged side by side so as to form a passage through which the shaft of the part passes on the side of the rail, and the support table is stretched on the feed bed at a position upstream from the entrance of the passage. The overhang portion has an overhang portion to be exposed, and the overhang portion is set higher than the shaft diameter of the part with respect to the inclined support surface of the feed bed and is gradually lowered toward the exit of the passage. At the exit of, the height is the same as that of the single rail.

The lower surface of the support table is arranged at a height position in the overhang portion to prevent the part from jumping beyond the horizontal axis with respect to the axis, and the part is single in the entrance of the passage. The arrangement is such that the upper end of the rail is used as a fulcrum and the height is lowered to encourage a change in posture when the shaft is hung down. It may be arranged at a height at which the large diameter portion is always in a non-contact state even while the posture is changed.

It is preferable that the fulcrum edge of the single rail has a tip unevenly arranged on the side far from the support table.
It is preferable that the inclined support surface of the feed bed has an inclined angle of 30 ° with respect to the horizontal plane.

In the parts feeder according to the present invention, it is possible to reliably change the posture and continuously take out a part having a large diameter portion extending outward in the radial direction at one end or a middle portion of the shaft with high efficiency. ..

It is a front view which showed one Embodiment of the parts feeder which concerns on this invention. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 1 is a cross-sectional view taken along the line BB of FIG. (A) is an enlarged view of part C of FIG. 1, and (b) is a plan view of a main part showing a part of (a). FIG. 4 is a cross-sectional view taken along the line DD of FIG. FIG. 5 is a cross-sectional view taken along the line EE of FIG. FIG. 5 is a cross-sectional view taken along the line FF of FIG. FIG. 4 is a cross-sectional view taken along the line GG of FIG. FIG. 5 is a cross-sectional view taken along the line HH of FIG. It is a side sectional view showing the main structure which was often adopted by the conventional parts feeder. It is an enlarged view of the main part of a bolt.

Hereinafter, embodiments of the present invention will be described.
1 to 9 show an embodiment of the parts feeder 1 according to the present invention. First, the overall configuration of the apparatus will be outlined based on FIGS. 1 to 3. As shown in FIGS. 5 to 9,
In the present embodiment, the part W exemplifies a bolt with a hexagonal head, and the shaft W ₁ of the part W corresponds to a male screw portion and the large diameter portion W ₂ corresponds to a bolt head.

As shown in FIG. 1, the parts feeder 1 is provided with a loading portion 4 of parts W (omitted in FIGS. 1 to 4) at the uppermost portion, and the parts W fed into the loading portion 4 are provided. Is sent to the posture changing section 6 via the alignment transport section 5 provided below the loading section 4, and after passing through the posture changing section 6, the axis is aligned in a standing posture facing in the vertical direction. , It can be continuously taken out from the outlet portion 7a of the carry-out rail 7 extending to the side of the device.

The loading portion 4 has a rectangular box-shaped hopper 10 having a bottom portion and a falling basin 11 connected to the discharge port portion 10a of the hopper 10 and penetrating vertically. A first vibrator 12 is connected to the bottom of the hopper 10, and the part W supplied into the hopper 10 is moved from the right to the left side (discharge port portion 10a) of FIG. 1 by the vibration applied by the first vibrator 12. is conveyed toward (see arrow P _1).

The aligned transport section 5 is provided with a reverse feed section 15 provided so that one end side (upstream end) faces below the drop basin 11, and the other end side (downstream end) of the reverse feed section 15 is lowered by an ascendant stroke. It has a lifter 16 arranged as a point and a feed bed 17 provided in an arrangement connected to the rising point of the lifter 16.
At the bottom of the backhaul portion 15 are connected to the second vibrator 20 (see FIG. 3), and falls within the drop chambers 11 (arrow P ₂ reference) supplied parts W and the reverse feed section 15 , the conveying direction of the hopper 10 adapted to be fed to the reverse direction (see arrow P ₃₎ it is conveyed to the (right from the left in FIG. 1), the vertical movement position of the lifter 16 in the transport downstream end.

As shown in FIGS. 2 and 3, in the lifter 16, an elevating table 24 having an inclined upper surface is held in an elevating hole 23 penetrating in the vertical direction so as to be able to elevate, and an appropriate elevating drive unit 25 is held with respect to the elevating table 24. It is configured so that the elevating motion is given by.
The elevating drive unit 25 in the illustrated example is provided with a cam follower 28 at the tip of a crank lever 27 rotated by a motor 26, and a horizontal transmission bar 30 that elevates and elevates by an upright linear motion guide 29 is placed on the cam follower 28. It is a structure. That is, the cam follower 28 moves around the circumference by the drive of the motor 26, and the transmission bar 30 repeats the vertical movement while being guided by the linear motion guide 29.

However, the detailed structure of the elevating drive unit 25 is not particularly limited. For example, the linear motion guide 29 may be changed to a fixed motion cam, or the elevating drive unit 25 may be changed to a crank mechanism, a link mechanism, or a winding transmission mechanism. , Cylinder mechanism and the like can also be configured by a single or a complex combination.
Since the lifter 16 has a structure in which the elevating table 24 moves up and down while being surrounded on all sides inside the elevating hole 23 as described above, the part W placed on the inclined upper surface of the elevating table 24 is the elevating hole. is reliably discharged to the upper feed bed 17 from 23 top opening (see arrow P ₄ in FIG. 1 and in FIG. 2).

The feed bed 17 faces one end side (upstream end) toward the front position of the lifter 16 (lower side of the inclination of the lift 24 that has reached the ascendant point), and goes in the downstream direction (from right to left in FIGS. 1 and 2). It is provided so as to face it, and has an inclined support surface 33 whose upper surface is inclined over its entire length.
A third vibrator 34 is connected to the bottom of the feed bed 17, and the part W sent from the lifter 16 onto the feed bed 17 is moved in the downstream direction (posture change portion) by the vibration applied by the third vibrator 34. is conveyed toward 6) (see arrow P _5).

When the inclination angle (θ in FIG. 5) of the inclined support surface 33 is 45 ° with respect to the horizontal plane, the transport of the part W is clogged, dropped, and the attitude of the part W in the feed bed 17 and the attitude changing portion 6 on the downstream side thereof. It has been clarified by the inventor's abundant experience that changes and defects occur frequently. Then, it has been found that it is preferable to set the angle to be smaller than 45 °, particularly to 30 °, in order to eliminate them.

The upper surface of the lifter 16 also has the same inclination direction and the same inclination angle as the inclined support surface 33, and the upper surface of the lifter 24 has the same inclined support surface 3 at the ascendant point of the lifter 16.
It is continuous with 3 or the upper surface of the lift 24 is set to rise slightly higher.
As shown in FIG. 2, the feed bed 17 is further provided with an alignment portion 37 at the front position of the lifter 16 at the upstream end, and is oversized with the under-sorting portion 38 at a position closer to the downstream before reaching the posture change portion 6. A sorting unit 39 is provided. A fall prevention edge 40 is provided on the inclined upper portion of the inclined support surface 33 except for the orientation alignment portion 37 (the front position of the lifter 16).

As shown in FIG. 3, the orientation alignment portion 37 is provided with an organizing wall 42 that stands up in the middle of the inclination of the inclined support surface 33, and the organizing wall 42 receives the part W that slides down from the upper surface of the elevating table 24. You can do it.
Although not shown, the rearranging wall 42 is formed with a gap above the inclined support surface 33 so that the axis W ₁ of the part W can pass through but the large diameter portion W _{2 cannot pass through.} This gap is formed by forming a rectangular notch opened on the downstream side along the transport direction by the feed bed 17.

Therefore, the part W discharged to the inclined support surface 33 by the lifter 16 _{has a diameter as shown in FIG. 5 by dropping the shaft W 1} into the gap formed between the rearranging wall 42 and the inclined support surface 33. Most of W ₂ will be in the upper position, and the axis W ₁ will be aligned so that it faces downward on the slope.
As shown in FIG. 5, the fall prevention edge 40 is of the flat surface (seat surface of the bolt head) of the _{large diameter portion W 2} with respect to the part W in _{which the shaft W 1 is laid on the inclined support surface 33.} The purpose is to prevent the part W from slipping down the inclined support surface 33 by engaging with one point facing downward.

In the illustrated example, the incidental piece 41 is provided so as to project upward in the inclination of the inclined support surface 33 while preventing the _{part W from coming into contact with the large diameter portion W 2.} 41 can be omitted.
The under-sorting unit 38 is for eliminating the short product that is insufficient for the specified shaft length in the part W, and as shown in FIG. 2, the fall prevention unit 38 is used. _{With respect to the shaft W 1 of the} part W transported along the edge 40, an exclusion port 43 is formed so that the opening edge is slightly caught on the shaft end when the length conforms to the specified length. ing.

That is, a short product that does not get caught in the opening edge of the exclusion port 43 falls into the exclusion port 43 and is excluded from the inclined support surface 33.
The over-sorting unit 39 is for eliminating long products longer than the specified shaft length in the parts W, and is conveyed along the fall prevention edge 40. _{With respect to the shaft W 1 of the} part W to be formed, an exclusion port 45 provided with an obstacle 44 that causes contact interference with the shaft end when the length exceeds the specified length is formed.

That is, the long product in contact with the obstacle 44 turns diagonally on the inclined support surface 33 with the engagement position with the fall prevention edge 40 as a fulcrum and falls into the exclusion port 45, and falls into the inclined support surface 33. Excluded from above.
For this reason, the part W that safely passes through the exclusion port 43 of the under-sorting unit 38 and the exclusion port 45 of the over-sorting unit 39 and reaches the downstream end of the feed bed 17 has a regular shaft length that meets the regulation. Limited to goods.

It should be noted that the under-sorting unit 38 and the over-sorting unit 39 are arranged in series along the transport direction of the parts W by the feed bed 17, and the transport distance of the parts W in such a feed bed 17 is gained. Therefore, in the process from the hopper 10 to the feed bed 17, the reverse feed portion 15 that temporarily reverses the transport direction is arranged, and the depth of the entire device (vertical direction in FIG. 2) is achieved. And the length (horizontal direction of FIGS. 1 and 2) can be compactly accommodated.

Next, the posture changing unit 6 that plays an important role in the parts feeder 1 according to the present invention will be described.
As shown in FIGS. 1, 2, and 4, the posture changing unit 6 is arranged so as to extend from the downstream end of the feed bed 17 in the transport direction to the further downstream direction, and is shown in FIGS. 6 to 9. As shown, it has a single rail 50 and a support table 51 provided in parallel on the side of the single rail 50.

Regarding the positional relationship between the single rail 50 and the support table 51, in terms of the inclination direction of the inclined support surface 33 in the feed bed 17, the single rail 50 is on the upper side of the inclination (left side of FIGS. 6 to 9), and the support table 51 Is the lower side of the slope (right side of FIGS. 6 to 9).
A passage 52 extending in the same direction (extension direction) as the transport direction of the feed bed 17 is formed between the single rail 50 and the support table 51.

In addition, since the single rail 50 is arranged at the downstream end (or downstream side thereof) of the feed bed 17, the position where the single rail 50 and the support table 51 start to be in parallel state (that is, the upstream end of the passage 52) The entrance) formed in the feed bed 17 is also naturally arranged at the downstream end (or downstream side thereof) of the feed bed 17.
The passage width of the passage 52 is set to be wider than the shaft diameter _{of the shaft W 1 in the part W and narrower than the large diameter portion W 2.} Further, the bottom of the passage 52 penetrates downward.

Therefore, when the part W is sent to the posture changing portion 6, the shaft W ₁ always fits in the passage 52 and hangs down regardless of the length of the shaft W _1. However, at this time, the shaft W _{1 of the} part W can maintain a non-contact state with respect to one or both of the single rail 50 and the support table 51 in the passage 52.
Since the posture changing portion 6 (single rail 50 and the support table 51) is subjected to the vibration from the third vibrator 34 (see FIG. 1) described above, the part W from the feed bed 17 to the posture changing portion 6 Noriutsuri and, conveying part W in on position change unit 6 are also continues as upper feed bed 17 (see arrow P ₅ in FIG. 1).

The single rail 50 is provided with a fulcrum edge 55 having a tip directed upward only at the entrance of the passage 52, and the fulcrum edge 55 has a tip that causes the feed bed 17 to fall in the transport direction as shown in FIG. It is arranged so as to match the prevention edge 40. Further, the tip is provided so as to maintain a height substantially equal to or slightly lower than the fall prevention edge 40 (at least a height not exceeding the fall prevention edge 40).

Here, "only the entrance" means that the fulcrum edge 55 does not extend over the entire length of the passage 52, but is provided at the minimum necessary distance. That is, the fulcrum edge 55 has a main function of promptly changing the posture of the part W transferred from the feed bed 17 onto the single rail 50, and the part W changes the posture. This is because it will become an unnecessary long item later.

The tip of the fulcrum edge 55 is arranged so as to be biased toward the side far from the support table 51 (left side in FIG. 6). That is, the outer shape of the fulcrum edge 55 is a horizontally long rectangle whose shape when viewed from the front is clear from FIG. 4, and a right-angled triangular shape whose shape when viewed from the side is clear from FIG. It is presented.
Since the tip of the fulcrum edge 55 is biased toward the distance from the support table 51 in this way, in the part W, the fillet with a rounded surface is formed at the inner corner of the _{shaft W 1} and the large diameter portion W _{2 (FIG. 11).} (Refer to reference numeral 107), the part W can be stably supported on the lower surface of _{the large-diameter portion W 2 that avoids this fillet.}

As shown in FIG. 4, such a single rail 50 is formed so as to gradually descend from the downstream side past the fulcrum edge 55. The descent is provided by a gentle curve (see dashed line) that is convex upwards.
On the other hand, as shown in FIGS. 4 and 5, the support table 51 extends not only from the portion parallel to the single rail 50 but also beyond the entrance of the passage 52 to a further upstream position on the feed bed 17. It has an overhang portion 58 that covers the area.

In the support table 51, the lower surface of the table of the overhang portion 58 is set to a height (H in FIG. 5) that exceeds the shaft diameter _{of the shaft W 1 in the part W than the inclined support surface 33 of the feed bed 17.} , The axis W _{1 of the} part W is arranged at a height position that can prevent the axis W 1 from jumping up at least beyond the horizontal posture.
Further, in the entrance of the passage 52, that is, in the portion starting to be parallel to the single rail 50, the lower surface of the support table 51 has already started to descend. The degree of descent required depends on the descent gradient of the single rail 50 and the relationship with the descent position, but the height that encourages the part W to change its posture smoothly (FIGS. 6 to 8) is set. It is important.

To explain concretely by giving an example, the upper end of the single rail 50 (the tip of the fulcrum edge 55) comes into contact with the lower surface _{of the large diameter portion W 2 of the part W in a single linear shape, so that the part W is brought into contact with the lower surface.} The fulcrum edge 55 is used as a fulcrum to swing freely, and the _{posture is changed so that the axis W 1} takes a hanging posture according to gravity. At this time, as shown in FIGS. 6 to 8, it can be said that the higher the part W moves to the downstream side, the higher the height is expected to lightly suppress the upward surface with respect to the axis W1.

In the present embodiment, the lower edge of the support table 51 facing into the passage 52 is chamfered diagonally upward so that the part W _{comes into contact with the axis W 1 on} a "plane" parallel to the axis direction. This is done so that excessive transport resistance is not transmitted to the part W.
That is, if such chamfering is not performed, there is a possibility that the lower edge of the support table 51 facing into the passage 52 and the axis W _{1 of the} part W make high surface pressure contact, and the transfer resistance. It becomes impossible to completely wipe out the excessive size of the parts and the clogging of the transportation of the parts W.

On the other hand, as shown in FIGS. 5 to 9, the upper surface of the support table 51 has a large diameter W _{2 while the part W changes its posture from the overhang portion 58 to the exit of the passage 52.} always it has been positioned at a height to continue the non-contact state (see the gap S ₁ to S _4), at the outlet of the passage 52, and finally become flush with the height equivalent to a single rail 50.
_{That is, the passage 52 is wider than the shaft diameter of the shaft W 1} in the part W, and in the overhang portion 58 of the support table 51, the shaft diameter of the part W is larger than the inclined support surface 33 of the feed bed 17. The fact that the support table 51 starts descending from a higher position (H) that exceeds it is convenient for maintaining the non-contact state _{of the part W with the large diameter portion W 2 during transportation.}

In the present embodiment, as shown in FIG. 4, the support table 51 has a steeply inclined portion 51a having a relative downward slope between the upstream end and the intermediate portion in the transport direction, and is between the intermediate portion and the downstream end. In, the downward slope is a relative gentle slope portion 51b. Specifically, the steeply inclined portion 51a is set to 23 ° from the horizontal, and the gently inclined portion 51b is set to 15 ° from the horizontal.
Of these, the steeply inclined portion 51a is matched with the position where the single rail 50 is inclined downward with a gentle convex curve (see FIG. 4). That is, the steeply inclined portion 51a is provided so as to correspond to the region where the transport speed is accelerated with respect to the part W and at the same time, the region where the support table 51 lightly suppresses the shaft W1 of the part W. You can also say.

As a result, the posture of the part W is changed at once by the steeply inclined portion 51a, and after the posture is changed, the gently inclined portion 51b gently discharges the part W so that a smooth flow of the part W occurs. As a result, the transport pitch of the parts W is uniformly and orderly packed, and the parts can be stably supplied.
As shown in FIGS. 4 and 9, the support table 51 has a width bracket 60 that enables position adjustment in the proximity and separation directions with respect to the single rail 50, and a height that enables the position adjustment of the support table 51 in the vertical direction. A feeding bracket 61 is provided.

Therefore, by loosening the fixing bolt 62 that fixes the width-out bracket 60, the mutual distance between the single rail 50 and the support table 51 (that is, the groove width of the passage 52) can be finely adjusted according to the shaft diameter of the part W. , It is possible to change to an appropriate interval for different types of parts W having different shaft diameters.
Further, if the fixing bolt 63 for fixing the height setting bracket 61 is loosened, the height of the support table 51 can be finely adjusted according to _{the shaft diameter of the part W and the overhang amount of the large diameter portion W 2.} it can.

As shown in FIG. 1, a fourth vibrator 65 is connected to the bottom of the carry-out rail 7 connected to the downstream side of the posture changing portion 6 (single rail 50 and support table 51). the vibration imparted by 4 vibrator 65, parts W which possessed from the feed bed 17 to the posture changing section 6 is conveyed toward the right Fig. 1 to the left (outlet 7a) (see arrow P _6).

Next, the operation of the parts feeder 1 according to the present invention will be described.
As shown in FIGS. 1 to 3, by loading the part W into the loading section 4, the part W is sequentially conveyed to the hopper 10, the drop basin 11, the reverse feed section 15, the lifter 16, and the feed bed 17, and is fed. On the bed 17, the individual parts W are aligned by the orientation alignment portion 37, and after passing through the under-sorting section 38 and the over-sorting section 39, the parts W are carefully selected only for genuine products that meet the regulation regarding the shaft length. That is as described above.

As shown in FIG. 6, the part W fed from the feed bed 17 to the posture changing portion 6 in this way first has only one side of the _{large diameter portion W 2 by only the upper end of the single rail 50 (the tip of the fulcrum edge 55).} Only one place will be supported. Therefore, the part W can swing around the fulcrum edge 55 as a fulcrum.
At this time part W, the although the posture change action such that the axis W ₁ is hanging posture by gravity occurs, in addition, the shaft W1 of the part W prevents jumping clutter by the lower surface of the support table 51 at the same time _{Since the action of lightly restraining the shaft W 1} is generated downward, the part W reliably and quickly changes its posture so that the shaft W 1 hangs down into the passage 52.

The position where the part W achieves the posture change is the downstream end of the posture change portion 6 as shown in FIG. 9, and at this time, the part W is supported at two opposite points of the _{large diameter portion W 2 for the first time.} Therefore, it is no exaggeration to say that the parts W are rarely subjected to transfer resistance that significantly reduces the transfer efficiency up to this stage.
Thus, the part W is taken out from the outlet portion 7a of the carry-out rail 7 with high efficiency and in an orderly manner.

By the way, the present invention is not limited to the above-described embodiment, and can be appropriately modified depending on the embodiment.
For example, the first vibrator 12, the second vibrator 20, the third vibrator 34, and the fourth vibrator 65 may adopt different frequencies to cause a difference in the transport speed of the parts W. Further, these four units may be integrated into one vibrator to give vibration to the entire device.

The feed bed 17 is not limited to being linear, and can be formed so as to draw an arc shape or a circular ring shape in a plan view. The same applies to the back feed portion 15 and the hopper 10, and in particular, the hopper 10 can be formed in a circular shape or a box shape.
In the part W, _{there may be no fillet between the shaft W 1} and the large diameter portion W _2. Therefore, when the fulcrum edge 55 is provided at the upper end of the single rail 50, the bias may be reversed or the fulcrum may be provided. It is possible to set it at the center position of the edge 55, and it is also possible to make the cross-sectional shape of the fulcrum edge 55 semicircular.

Further, it is also possible to omit the fulcrum edge 55 in the first place.

1 Parts feeder 4 Input section 5 Aligned transfer section 6 Attitude change section 7 Carry-out rail 7a Exit section 10 Hopper 10a Discharge port section 11 Drop bracket 12 1st vibrator 15 Back feed section 16 Lifter 17 Feed bed 20 2nd vibrator 23 Lifting hole 24 Lifting platform 25 Lifting drive unit 26 Motor 27 Crank lever 28 Cam follower 29 Linear guide 30 Transmission bar 33 Inclined support surface 34 Third vibrator 37 Orientation alignment part 38 Under-sorting part 39 Over-sorting part 40 Fall prevention edge 41 Attached piece 42 Arrangement Wall 43 Exclusion port 44 Obstacle 45 Exclusion port 50 Single rail 51 Support table 51a Steep slope 51b Slow slope 52 Passage 55 Abutment edge 58 Overhang part 60 Width bracket 61 Height bracket 62 Fixing bolt 63 Fixing bolt 65th 4 Vibrator 100 Bolt 101 Male threaded part 102, 103 Rail 104 Groove 104 Male threaded part 105 Bolt head 106 Clearance 107 Fillet 108 Edge part W parts W ₁ axis W ₂ diameter Large part

Claims (4)

A part having a large diameter portion at one end or a middle portion of the shaft has an inclined support surface that tilts and supports the shaft and a fall prevention edge that engages the large diameter portion at the inclined upper portion of the inclined support surface. With the feeding bed
A vibrator that applies vibration for transportation to the feed bed, and
It is provided with a posture changing portion that is arranged so as to extend from the downstream end in the transport direction of the feed bed in the downstream direction.
The posture changing portion includes a single rail arranged downstream of the fall prevention edge in the feed bed while maintaining a height not exceeding the fall prevention edge.
A support table arranged side by side with a passage through which the shaft of the part passes on the side of the single rail.
Have and
The support table
It has an overhang portion that overhangs the feed bed at a position upstream of the entrance of the passage, and the overhang portion is set higher than the shaft diameter of the part with respect to the inclined support surface of the feed bed. A parts feeder characterized in that the slope is gradually lowered toward the exit of the passage, and the exit of the passage is aligned at the same height as the single rail. The lower surface of the support table is
The overhang portion is arranged at a height position that suppresses jumping beyond the horizontal with respect to the axis of the part, and is also arranged.
Inside the entrance of the passage, the parts are arranged so as to be lowered to a height that encourages a change in posture when the shaft is hung down with the upper end of the single rail as a fulcrum.
The upper surface of the support table is
Claim 1 is characterized in that the parts are arranged at a height that always keeps in contact with the large diameter portion from the overhang portion to the exit of the passage while the parts are changing their postures. Parts feeder described in. The single rail is provided with a fulcrum edge with a tip pointing upward only at the entrance of the passage.
The parts feeder according to claim 2, wherein the fulcrum edge is arranged so that the tip is biased toward a side far from the support table. The parts feeder according to any one of claims 1 to 3, wherein the inclined support surface of the feed bed has an inclined angle of 30 ° with respect to a horizontal plane.

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