JP4582479B2 - Parts feeder - Google Patents

Description

  This invention is in the field of supplying parts having a head and a shaft part integrally formed with the head, and parts in an abnormal state are prohibited from being sent out, and the abnormal parts are The parts feeder is forcibly removed.

  The bowl of a parts feeder that accommodates parts and is subjected to delivery vibration is usually composed of a circular bottom plate and an outer wall plate standing up from the outer periphery of the bottom plate, and is formed in a step shape along the inner wall of the outer wall plate. And a delivery pipe is connected to the component conveyance path.

And in the parts feeder of the above type, for example, in order to set whether the welding projection of the projection nut is upward or downward and to send it out in any direction, A passage restricting means for prohibiting passage is provided.
Japanese Patent No. 3416770 Japanese Utility Model Publication No. 53-126272

  In the passage restricting means as described above, when an abnormal part is restrained by the passage restricting means, a traffic jam occurs in a state where subsequent parts are connected on the part conveyance path. The worker who finds this traffic jam manually removes the congested parts each time. Therefore, if the discovery of the traffic jam is delayed, the parts supply to the subsequent process is delayed, which hinders the smooth parts supply, and there is a problem that the productivity is lowered.

  In addition, in the case of a part having a head part and a shaft part formed integrally with the head part, for example, a bolt with a head part, it is possible to send it out from the parts feeder in a state where a washer is assembled to the bolt shaft part. It has been broken. In this case, it is sent out in a component posture in which the bolt shaft is raised with the head side down. There are various reasons for such a component posture. For example, there is a structure of a component supply control device arranged on the downstream side of the parts feeder. This parts supply control device divides and feeds continuously connected bolts one by one, but when the structure of the device accepts the bolts in an upright state, the standing posture as described above is used. It is necessary to send it out from the parts feeder.

  However, when the washer is away from the head, the washer falls over just by slightly contacting a nearby member. In addition, since the center of gravity of the standing bolt is at a high position, if a slight external force is applied to the bolt for some reason, it will fall down immediately.

  Therefore, the above-described problem of overturning can be solved by sending out from the parts feeder only the bolt whose washer is in close contact with the head.

  The above points will be described with reference to FIG.

  Reference numeral 1 denotes an entire bolt, which is made of iron, and a bolt shaft 3 is integrally provided on a hexagonal head 2, and a washer 4 is assembled to the bolt shaft 3. When the washer 4 is in close contact with the head 2 as described above, the above-described problem of falling does not occur.

  On the other hand, as shown in FIG. 5B, when the washer 4 is away from the head 2, as described above, the washer 4 is likely to come into contact with a nearby member, and the center of gravity of the bolt 1 in an upright state. Because it becomes high, it becomes easy to fall.

  Accordingly, the bolt 1 as shown in FIG. 5A is sent out from the parts feeder, but the bolt 1 as shown in FIG.

  Further, the component 5 shown in FIG. 9C is obtained by integrally providing a columnar shaft portion 3 on a head portion 2 that is circular when viewed in plan. And the component 5 shown to the same figure (D) has the height of the head 2 significantly higher than the thing of (C). In the case of such a part, a part having a head height of (C) may be sent out as a normal part.

  The present invention provides a parts feeder that can send out only parts having a normal head height and remove abnormal parts in a part having a head and a shaft part formed integrally with the head. The purpose is to do.

  In selecting the above-mentioned parts having the normal head height, the substantial height of the head is used as a reference for selection.

  This point will be described with reference to FIG. 9. In the case shown in FIG. 9A, since the washer 4 is in close contact with the head 2, the substantial height of the head is equal to the height of the head 2 and the washer 4. The total thickness is H1. In the case shown in (B), since the washer 4 is separated from the head 2, the substantial height of the head 2 including the separated space is H2.

  On the other hand, the substantial heights of the heads 2 in FIGS. 3C and 3D are H3 and H4, respectively.

  The expression "substantial height" as described above is a normal part due to the height space occupied by the washer 4 and the head 2, that is, the size of H1 and H2, as in (A) and (B). And the abnormal parts are classified, so they are expressed as such. In the examples of (C) and (D), the heights H3 and H4 of the head 2 itself are expressed as “substantial height”.

Means to solve the problem

The present invention has been provided to meet the above-mentioned demands. The invention according to claim 1 is characterized in that the parts to be delivered include a head and a shaft formed integrally with the head. And a bowl of a parts feeder that accommodates the parts is composed of a circular bottom plate and an outer wall plate that stands up from the outer periphery of the bottom plate, and is formed in a step shape along the inner wall of the outer wall plate. A delivery pipe is connected to the parts delivery path, and the parts are delivered from the delivery pipe in a normal posture with the head portion on the lower side and the shaft portion standing up. In the form of
Passage restricting means for prohibiting passage of a part having an abnormal substantial height or part posture of the head is provided in a part of the parts conveying path and / or the delivery pipe, and is restricted by the passage restricting means. restraining component removing means for removing by which part is provided,
Preliminary sorting means is disposed upstream of the passage restriction means,
The preliminary sorting means includes a narrow portion formed by narrowing the width of the component conveying path, a gauge member arranged along the narrow portion, and a parallel arrangement with the narrow portion formed on the gauge member. A receiving surface and a passing space that is open to one side below the receiving surface,
The height dimension of the passage space is set to be slightly larger than the substantial height of the head of a component in a normal posture, and the dimension in plan view between the receiving surface and the edge of the narrow portion is When a part with a normal posture passes, the head enters the passage space and supports the narrow part so that the head does not fall. part is in contact with the receiving surface is set up to fall from the narrow portion,
An exclusion guide surface that is formed in an inclined state at the upstream end of the passage restricting means and promotes pushing out abnormal parts that are restrained by the passage restricting means by moving the parts in a normal posture is provided. The parts feeder is characterized in that a receiving plate continuing to the narrow portion is provided on the upstream side of the exclusion guide surface .

Parts to be fed and out of the target is configured to include a shaft portion which is a head and the head integrally formed, bowl parts feeder for accommodating the component, a circular bottom plate and the bottom plate It is constituted by an outer wall plate standing up from the outer peripheral portion, and has a spiral component conveyance path formed in a step shape along the inner wall of the outer wall plate, and a delivery pipe is connected to the component conveyance path, and the component Is a type that is sent out from the delivery pipe in a normal posture with the head portion on the lower side and the shaft portion standing upright, and the substantial part of the head is located at the boundary between the component conveying path and the delivery pipe. height or part attitude provided passage restricting means for inhibiting the passage of parts is abnormal, stop component removing means for removing the part being restrained in said passage restricting means is that provided.

Further, according to a fifth aspect of the present invention, the parts to be delivered include a head and a shaft formed integrally with the head, and a bowl of a parts feeder that accommodates the parts. Is composed of a circular bottom plate and an outer wall plate standing up from the outer periphery of the bottom plate, and has a spiral component conveyance path formed stepwise along the inner wall of the outer wall plate. The delivery pipe is connected, and the parts are delivered from the delivery pipe in a normal posture with the head portion on the bottom and the shaft portion standing upright,
Standing means for standing the part in the normal posture in the parts conveying path, and a part in the standing state in which the shaft portion is longer than a predetermined length while being disposed on the downstream side of the standing means in the part transporting direction are removed. First removing means that is disposed on the downstream side of the first removing means in the parts conveying direction, and second removing means that removes the fallen parts whose shaft portion is longer than a predetermined length, A passage restricting means disposed on the downstream side of the removing means in the parts conveying direction and prohibiting passage of a part having an abnormal substantial height or part posture of the head; A restraining part removing means for removing the parts restrained by the means is provided ,
Preliminary sorting means is disposed upstream of the passage restriction means,
The preliminary sorting means includes a narrow portion formed by narrowing the width of the component conveying path, a gauge member arranged along the narrow portion, and a parallel arrangement with the narrow portion formed on the gauge member. A receiving surface and a passing space that is open to one side below the receiving surface,
The height dimension of the passage space is set to be slightly larger than the substantial height of the head of a component in a normal posture, and the dimension in plan view between the receiving surface and the edge of the narrow portion is When a part with a normal posture passes, the head enters the passage space and supports the narrow part so that the head does not fall. The part is set to come into contact with the receiving surface and fall from the narrow part,
An exclusion guide surface that is formed in an inclined state at the upstream end of the passage restricting means and promotes pushing out abnormal parts that are restrained by the passage restricting means by moving the parts in a normal posture is provided. The parts feeder is characterized in that a receiving plate continuing to the narrow portion is provided on the upstream side of the exclusion guide surface .

Bowl parts feeder for accommodating the part products, circular bottom plate and is formed by wall panels are erected from an outer peripheral portion of the bottom plate, the formed spiral component conveying stepwise along the inner wall of the outer wall plate In a type having a path and a delivery pipe connected to the parts conveyance path, a part of the parts conveyance path and / or the delivery pipe has an abnormal shape, size, part orientation, etc. provided passage restricting means for inhibiting passage, restraining component removing means for removing the part being restrained in said passage restricting means is that provided.

The invention's effect

  In the first aspect of the present invention, passage restriction means for prohibiting passage of a component having an abnormal substantial height or component posture of the head is provided in a part of the component conveyance path and / or the delivery pipe. Since the restraining part removing means for removing the parts restrained by the passage restricting means is provided, the abnormal parts restrained by the passage restricting means are removed by the restraining part removing means.

  If it is restricted by the passage restricting means, the subsequent parts will not be sent out from the parts feeder, and unless the restricted parts are removed, the supply of the parts to the target location will be stopped and productivity will be reduced. It is. However, according to the present invention, since the parts restrained by the passage restricting means are removed by the restraining part removing means, the restart of the parts supply is surely performed, and the decrease in productivity can be minimized. it can.

  For example, when a bolt with a washer assembled is sent upright with the head of the bolt facing down, if the washer is away from the head of the bolt, the washer slightly contacts a nearby member. Because the center of gravity of a standing bolt becomes a high position, it is possible to fall over just by applying a slight external force to the bolt for some reason. Therefore, by preventing the bolt having such an abnormal position of the washer from being sent out, the standing bolt sent from the parts feeder can be accurately supplied to the target location without falling down.

  When the washer as described above is separated from the bolt head, the substantial height of the bolt head is taken as the dimension from the end of the bolt head to the washer. Since excessive parts are stopped by the passage restricting means, it is possible to surely remove parts having an abnormal washer position.

  Also, if a part that should stand up with its head down is touched by the passage restricting means while falling down for any reason, such a part is restrained by the passage restricting means and removed by the restraining part removing means. Is done. In this type of parts feeder, since the feed vibration is applied to the bowl, the parts moving in the parts conveyance path may fall over even if they are slightly caught by foreign matters on the parts conveyance path. Since the parts that have fallen in this way are reliably removed by the restraining parts removing means, the delay in sending out the subsequent parts can be minimized and the decrease in productivity can be reduced.

  According to a second aspect of the present invention, when the restraint component removing means detects that the component passage detection sensor disposed on the downstream side in the component transport direction of the restraint component removing means does not detect the passage of the component for a predetermined time. The parts feeder according to claim 1, wherein the parts feeder is configured to perform a removal operation of the parts restrained by the passage restriction means.

  When an abnormal part is not restrained by the passage restricting means and the passage signal is generated from the part passage detecting sensor without interruption, the restraining part removing means does not perform the removal operation. However, when an abnormal part is restrained by the passage restricting means, the passage signal emitted from the part passage detection sensor is interrupted. When the time when this signal is interrupted reaches a predetermined time, the restraining part removing means is operated. A signal is issued to forcibly remove the stopped abnormal part and normal part delivery is resumed.

  Therefore, when the predetermined time is reached, the abnormal parts are surely removed by the stopping parts removing means, and the operator does not have to perform troublesome removal work. Furthermore, by setting the predetermined time as short as possible, it is possible to shorten the stop time for parts delivery, and minimize the decrease in productivity.

  Further, as described above, the control means for operating the stop component removing means when the predetermined time is reached, receives the signal from the above component passage detection sensor and the sensor, performs a time measurement operation, and sends an operation signal to the stop component removing means. Since it can be formed by the control device to be supplied, it is possible to simplify the formation of the control system and to make it advantageous in terms of cost.

  A third aspect of the present invention is the parts feeder according to the first or second aspect, wherein the restraining part removing means is constituted by an advancing / retracting member that pushes out a part restrained by the passage restricting means.

  Since the abnormal part stopped by the passage restricting means is pushed out by the advancing and retracting member, the part is forcibly removed. Therefore, the restrained parts are surely removed in a very short time, which is effective in minimizing the decrease in productivity. In addition, because the parts are pushed out by the advancing and retracting members, even if the succeeding parts are entangled with the restrained parts, they are entangled by stroking the advancing and retracting members twice and 3 degrees. The existing parts can be dispersed and eliminated.

  According to a fourth aspect of the present invention, the passage restricting means includes a main passage space through which a head of a component having a predetermined height and a substantial height of the head passes, and a shaft in a standing state. It is a parts feeder in any one of Claims 1-3 provided with the sub passage space through which a part passes.

  By installing the main passage space and the sub passage space as described above, when the upright component with the head on the lower side has a normal head height, the head is the main passage space and the shaft portion is Pass through the secondary passage space. When the substantial height of the head is excessive, it is impossible to pass through the main passage space, so that reliable passage prevention can be obtained.

Since the upper Symbol passage adjustment means are arranged in the boundary portion of the workpiece transport path and delivery tube, it is possible to perform the passage regulation final abnormal parts in the vicinity of the delivery point of the parts feeder, preventing thereby sending the faulty part Is reliably achieved. Furthermore, since the passage restricting means is disposed in the vicinity of the end portion on the downstream side of the parts conveying path, various removing means for removing abnormal parts can be arranged in the parts conveying path on the upstream side, and abnormalities in the parts feeder can be arranged. The part removing means is realized by a double or triple system configuration, and abnormal parts can be reliably prevented from being sent out.

  Other functions and effects are the same as those of the first aspect.

In the fifth aspect of the invention, in order to make the component that has moved on the component conveyance path into a normal posture in which the head is on the lower side, the standing means functions and sends out in a predetermined standing posture. Yes. In particular, about 95% of the parts transferred to the parts conveyance path are in a fallen state. The remaining 5% of such parts stand up, and if this 5% is sent out, only about 5% of the parts on the parts conveying path will be sent out, so that the so-called sending efficiency is remarkably lowered. .

  In order to improve such delivery efficiency, it is possible to raise many parts in a standing posture by the standing means and improve delivery efficiency as a parts feeder. Usually, since the bowl is given vibration, it is difficult to improve the ratio of the standing parts because the parts in the falling position may fall again after being converted into the standing position. Specifically, it is desirable that about 50% of the parts be in a standing posture.

  Since parts that are unusually long only in the shaft portion may be mixed in the bowl of the parts feeder, it is necessary to eliminate such abnormally long parts. In order to fulfill such an exclusion function, a removing means for setting the height of the passage space of the parts to a predetermined value is prepared. An abnormally long part in the standing state cannot pass through the first removal means and is removed here. In addition, the part having an abnormal length in the fall state passes through the first removing means and is transferred to the downstream side in the transport direction.

  On the other hand, the standing component having a normal length passes through the first removing means and is transferred to the downstream side in the conveying direction while standing. Then, the normal-length component that has fallen down for some reason passes through the first removing means and is transferred to the downstream side in the transport direction.

  The parts of the abnormal length and the normal length that have fallen are removed from the parts conveyance path through the second removal means. Then, only the standing normal-length component is transferred to the downstream side in the component conveying direction without passing through the second removing means.

  In this way, the part having the normal length standing posture remaining on the part conveyance path reaches the passage restricting means. The behavior of the part that has reached the passage restricting means is the same as that of the first aspect.

Shape, a size and component orientation such abnormal components, is passed by the passage restricting means is restrained, it is removed by the restraining component removing means.

  If it is restricted by the passage restricting means, the subsequent parts will not be sent out from the parts feeder, and unless the restricted parts are removed, the supply of the parts to the target location will be stopped and productivity will be reduced. It is. However, according to the present invention, since the parts restrained by the passage restricting means are removed by the restraining part removing means, the restart of the parts supply is surely performed, and the decrease in productivity can be minimized. it can.

  Next, the best mode for carrying out the parts feeder of the present invention will be described.

  First, parts to be sent will be described.

  The parts to be delivered have a head portion formed integrally with the head portion. In this embodiment, the parts shown in FIG. That is, the bolt 1 shown in FIG. 2A is the bolt 1 in a normal state in which the washer 4 is in close contact with the head 2, and the substantial height of the head 2 is the thickness of the washer 4. It is H1 which added the length. FIG. 4B shows an abnormal bolt 1 in which the washer 4 is separated from the head 2, and the substantial height of the head 2 is from the end of the head 2 to the top surface of the washer 4. Distance H2.

  Moreover, as the component 5 comprised from the head and axial part similar to the above-mentioned volt | bolt 1, there exists what is shown to FIG.9 (C) and (D). In FIG. 5C, the substantial height of the head 2 is H3, and in FIG. 4D, the substantial height of the head 2 is H4.

  Among the components shown in FIGS. 9A to 9D, (A) and (C) are normal head heights, and (B) and (D) are abnormal head heights. It is. In the present embodiment, the parts (A) and (C) are sent out in a normal posture in which the shaft portion stands with its head side down. In the embodiment, specifically, the bolt 1 is a target to be delivered.

  Next, the overall configuration of the parts feeder will be described.

  FIG. 1 is a plan view and a side view of a parts feeder according to the present invention.

  The entire parts feeder is indicated by reference numeral 11. And the component of each part of the parts feeder 11 is made from iron. The bowl 12 of the parts feeder 11 is formed by welding an outer wall plate 14 while standing on the outer peripheral portion of a circular bottom plate 13, and a stepped component conveying path 15 is formed spirally along the inner wall of the outer wall plate 14. Has been. The component conveyance path 15 gradually increases in height in the conveyance direction. As shown in FIG. 1, the bolt 1 moving on the component conveyance path 15 is conveyed while turning counterclockwise, and is delivered from a delivery pipe 16 connected to an end of the component conveyance path 15. ing. And the air pipe 21 which injects the compressed air for nut conveyance to the delivery pipe 16 is joined.

  At the boundary between the component conveying path 15 and the delivery pipe 16, a bolt 1 in which the washer 4 is separated from the head 2, a fallen bolt 1, and the like (hereinafter referred to as an abnormal bolt 1 or an abnormal bolt 1). Passing restricting means 17 that prohibits the passage of is disposed. The detailed structure of the passage restricting means 17 will be described later.

  The cross-sectional shape of the delivery tube 16 is expressed as a posture in which the washer 4 is in close contact with the head 2 and the head portion 3 is on the lower side and the shaft portion 3 is standing (hereinafter referred to as a normal posture or a normal posture). ) Bolt 1 is allowed to pass. That is, it is constituted by a head passage 18 having a size slightly higher than the substantial height H1 of the head 1 and a shaft passage 19 constituted by an elongated space through which the shaft portion 3 can pass while standing. .

  And the component supply pipe | tube 20 joined to the delivery pipe | tube 16 is extended to the supply location of the nut 1, for example, the component supply control apparatus which divides | segments the continuous volt | bolt 1 one by one. The cross-sectional shape of the component supply pipe 20 is the same as that of the delivery pipe 16.

  As shown in FIG. 1B, a vibration generating unit 22 is disposed on the lower side of the bowl 12, and the transmission vibration is transmitted from the vibration generating unit 22 to the bowl 12.

  As described above, about 95% of the bolts 1 transferred to the component conveyance path 15 are overturned. Therefore, the standing means 25 is provided for raising the bolt 1 that has fallen first in a normal posture. In FIG. 1A, the arrangement position of the standing means 25 is shown, and the detailed structure thereof is shown in FIGS.

  The details of the standing means 25 will be described here.

  2 is a plan view showing a part of the bowl 12, FIG. 3 is a cross-sectional view of each part of FIG. 2, (A) FIG. 2 shows a cross-section AA of FIG. 2, and (B) FIG. The alphabet corresponds so as to show the BB cross section.

  The standing means 25 is arranged in the middle of the component conveyance path 15 so that the conveyed bolt 1 passes first, and the component conveyance path 15 is subjected to the following deformation or addition of other members. . As shown in FIG. 3A, the component conveying path 15 is usually inclined so that the center side, that is, the inner side of the bowl 12 becomes higher. This inclination angle θ1 is shown in FIG. Reference numeral 26 denotes a conveyance path forming plate, which is formed inside the outer wall plate 14.

  About 95% of the bolts 1 transferred on the component conveyance path 15 are in a fallen state, and the bolts 1 are carried in a fallen state as indicated by a two-dot chain line in FIG.

  As shown in FIG. 3E, a stepped portion 27 having a drop h1 is provided in the middle of the component conveying path 15, and the bolt 1 conveyed along the outer wall plate 14 falls from the stepped portion 27. (E) As shown in FIG. The head h1 is set to be slightly larger than the substantial height H1 of the head 2 in order to change to a normal posture during the transition period when the head falls. Note that when the stepped portion 27 falls, the bolt 1 that has fallen from the head 2 is in a normal posture, but the bolt 1 that has fallen from the shaft 3 remains falling without being raised. Further, the outer wall plate 14 is inclined toward the outer peripheral side of the bowl 12 as it approaches the stepped portion 27, so that the width space of the component conveying path 15 is increased and the movement of the bolt 1 is facilitated.

  Since the bolt 1 that has fallen down the stepped portion 27 may jump up and fall from the component conveying path 15, in order to prevent this, a saddle-like regulation plate 30 is provided at the place of the fall.

  The inclination direction of the component conveyance path 15 that conveys the dropped bolt 1 is reversed and is inclined so that the outer peripheral side, that is, the outer side of the bowl 12 becomes higher as shown in FIG. This inclination angle θ2 is shown in FIG.

  As shown in FIGS. (C) and (D), an elongated arc-shaped guide member 28 is fixed by welding or the like inside the component conveyance path 15, that is, on the center side of the bowl 12. The bolt 1 converted into a normal posture by the stepped portion 27 is conveyed to the downstream side in the conveying direction along the guide surface 29 of the guide member 28. During this conveyance, the bolt 1 is continuously subjected to the transmission vibration. The bolts 1 to be interfered with each other and some of them may fall down. In anticipation of such a fall, the ratio of the normal posture is set to about 50%. Therefore, the sending capacity (efficiency) of the parts feeder 11 is about 50%.

  In this example, as a result of measuring the ratio of the bolts 1 in the normal posture, it was confirmed that those of 50% to 55% were normal. The length of the bolt 1 is 10 mm, and the diameter of the bolt shaft 3 is 4.5 mm.

  The guide surface 29 of the guide member 28 is provided with an inclined posture in which an upper portion thereof is inclined toward the center side of the bowl 12, and the inclination angle gradually increases toward the downstream side of the guide member 28. The component conveying path 15 in the vicinity of the downstream end of the guide member 28 is gradually reversed so that the inclination direction becomes lower on the outside, whereby the bolt 1 is displaced toward the outer peripheral side, and the first removing means. 31.

  Next, the first removing means 31 will be described.

  The first removing means 31 is arranged on the downstream side in the component conveying direction of the standing means 25, and an abnormally long bolt 32 is mixed in the normal length bolt 1 for some reason. In order to deal with this, the bolt 32 in the standing state is removed, and the bolt 1 in a normal posture is allowed to pass through as it is. For this purpose, the first removing means 31 is provided with a gauge 33 for regulating the passing height, as shown in FIG. A support plate 35 having a passage opening 34 is fixed in a state of being erected on the component conveyance path 15 by welding or the like, and the gauge 33 is fixed to the upper portion of the passage opening 34.

  The passing height h2 set by the gauge 33 is set to be lower than the height of the bolt 32 having an abnormal length and higher than the height of the bolt 1 having a normal posture. The falling bolts 1 and 32 are high enough to pass. Although not shown, the gauge 33 employs, for example, a structure in which an adjustment bolt is passed through a long hole in the height direction so that the height h2 can be finely adjusted.

  As shown in FIG. 3 (F), when the standing bolt 32 comes into contact with the gauge 33 and is transferred to the downstream side in the conveying direction, the bolt 32 falls into the storage box 36 and is contained so that it cannot move to the other. The storage box 36 is formed by recessing the component conveyance path 15 and providing a surrounding wall 37 around it, and is disposed in the vicinity of the first removal means 31.

  The bolt 1 in a normal posture that has passed through the first removing means 31, the overturned bolt 1, and the overturned bolt 32 are conveyed to the second removing means 39.

  Here, the second removal means 39 will be described.

  The second removal means 39 is disposed on the downstream side of the first removal means 31 in the component conveying direction, and its structure is the same as that of the first removal means 31 as shown in FIG. Of the bolt 1 in a normal posture that has passed through the removing means 31 and the bolt 1 that has fallen down and the bolt 32 that has fallen down, only the bolt 1 in a normal posture is transferred to the downstream side in the conveying direction of the component conveying path 15, and the others Functions to be removed from the parts conveyance path 15. Accordingly, the passing height h3 of the gauge 40 of the second removing means 39 is set so that the bolts 1 and 32 that have fallen are allowed to pass without passing the bolt 1 in a normal posture. Reference numeral 41 denotes a passage opening provided in the outer wall plate 14.

  As shown in FIG. 3 (G), the abnormal bolts 1 and 32 that have passed through the gauge 40 fall from the component conveyance path 15, are accommodated in the receiving box 42, and pass through a passage opening 44 that is opened in the inner wall plate 43. Returned in. As shown in FIGS. 1 and 2, the receiving box 42 is attached to the outer peripheral side of the bowl 12.

  The bolt 1 having a normal length is standing upright on the downstream side of the second removal means 39 in the component conveying direction, but the bolt 1 whose washer 4 is separated from the head 2 is mixed. Or may fall over while interfering with the other bolts 1 in the course of being transported in the parts transport path 15, so that they are removed by the preliminary sorting means 52 and then transported to the passage restricting means 17 described above. It has become.

  Next, the preliminary sorting means 52 will be described.

  FIG. 4 (A) is a plan view of a portion where the preliminary sorting means 52 and the passage restricting means 17 are arranged. The I arrow view, the JJ cross section, the KK cross section, the LL cross section, and the like are respectively shown in FIG. It is shown in (I), (J), (K) and (L).

  As shown in FIG. 4 (J), the bolt 1 in a normal posture that did not fall down in the second removing means 39 has a lower part conveyance path 15 at the center side of the bowl 12 (inclination angle θ2). It is transferred along the inner wall plate 43 and reaches the preliminary sorting means 52.

  The preliminary sorting means 52 is installed to eliminate the bolt 1 in which the washer 4 is separated from the head 2. A gauge member 54 is disposed along a narrow portion 53 where the width of the component conveying path 15 is narrowed. As shown in FIG. 4 (K), the gauge member 54 is an L-shaped member reversed and fixed to the narrow width portion 53 by welding or the like, and is arranged parallel to the narrow width portion 53. A surface 55 and a passage space 56 open to one side are provided.

The height dimension h4 of the passage space 56 is set to be slightly larger than the substantial height H1 of the bolt 1 in a normal posture. Further, the dimension W viewed in a plane between the receiving surface 55 and the edge of the narrow portion 53 is, as shown in FIG. 4 (K), when the bolt 1 in a normal posture passes, the head 2 Enters the passage space 56 together with the washer 4, and the narrow portion 53 is set to support the head 2 in a range where it does not fall down. On the other hand, as shown in FIG. If you are away from the 2, the support width of the narrow portion 53 which supports the head portion 2 because the washer 4 contacts the receiving surface 55 becomes too small, so that the bolt 1 is falling from the narrow portion 53 Is set.

  As shown in FIG. 4A, the two gauge members 54 and the narrow width portion 53 as described above are arranged side by side, and the bolt 1 of the abnormal position washer should be the first gauge by any reason. When the member 54 does not fall, it is dropped by the next gauge member 54 and the narrow portion 53.

  An exclusion member 57 is provided in case the abnormally long bolt 32 reaches the position of the preliminary sorting means 52 for some reason. This exclusion member 57 is shown by a two-dot chain line in FIG. 4A, and, as shown in FIG. 4I, an elongated rod-like member is welded to the inner wall plate 43, and an abnormally long bolt 32 is provided. Is conveyed, it comes into contact with the exclusion member 57 and falls.

  It should be noted that such an abnormally long bolt 32 is mixed when the operator picks up the bolt that is rolling on the floor surface and returns it to the bowl 12, which is the component conveying path on the downstream side of the second removing means 39. Occurs when it is thrown into No.15. In addition, although it is similar to the bolt 1 in the normal posture, a bolt having a different shape is also excluded by the preliminary sorting means 52, and even if it reaches the passage restricting means 17, it will be eliminated by a stop function described later. Is done.

  As described above, the passage restricting means 17 is provided in case the abnormal bolt 1 is conveyed to the downstream side of the preliminary sorting means 52. Such a passage restricting means 17 fulfills a function to be called a last fort so that the bolt 1 is not sent out from the parts feeder 11 in an abnormal state, and the sending reliability of the parts feeder 11 is perfect. It is supposed to be.

  Next, the passage restriction means 17 will be described.

  FIG. 4 (A) is a plan view of a place where the passage restricting means 17 and the preliminary sorting means 52 are arranged. The I arrow view, the JJ cross section, the KK cross section, the LL cross section, and the like are respectively shown in FIG. It is shown in (I), (J), (K) and (L).

  In the passage restricting means 17, the passage space forming member 45 constituting the passage restricting means 17 is disposed at the boundary between the component conveying path 15 and the delivery pipe 16 as shown in FIG. The preliminary sorting means 52 is disposed upstream of the passage restriction means 17 (passage space forming member 45).

  The passage restricting means 17 has a function of allowing passage of the bolt 1 in a normal posture and prohibiting passage of an abnormal bolt 1 such as the bolt 1 in which the washer 4 is separated from the head 2 or the overturned bolt 1. For this purpose, the passage space forming member 45 of the passage restricting means 17 passes through the main passage space 47 through which the substantial height of the head of the bolt 1 is a predetermined height and the shaft portion 3 in the standing state. A sub-passage space 48 is provided.

  As shown in FIG. 4 (L), the bolt 1 in a so-called normal posture, in which the washer 4 is in close contact with the head 2 and the head portion 2 is on the lower side and the shaft portion 3 is erected. Has a substantial height H1. Such a head 2 passes through the main passage space 47, and the standing shaft portion 3 passes through the sub passage space 48. The height of the main passage space 47 is set to be slightly higher than the substantial height H1, so that it cannot pass if the washer 4 is separated from the head 2 even a little. The height of the main passage space 47 is smaller than the diameter of the head 2 of the bolt 1. Therefore, the bolt 1 that has fallen immediately before the passage restricting means 17 is also prevented from passing.

  As shown in FIG. 1 (A) and FIG. 4 (A), the upstream end of the passage space forming member 45 is provided with an exclusion guide surface 49 formed by slanting the receiving box 42 side, and the upstream side thereof. A receiving plate 50 is provided.

  Since the passage space forming member 45 has the above-described structure, the bolt 1 having an excessively large height (H2 in FIG. 9B) where the washer 4 is separated from the head 2 is shown in FIG. As shown by a two-dot chain line, the washer 4 is caught at the end portion on the inlet side of the passage space forming member 45 and the passage is stopped. When the succeeding bolt 1 is pressed against the bolt 1 thus restrained, the succeeding bolt comes into contact with the restrained bolt 1 and falls into the receiving box 42. Therefore, since the number of stop bolts 1 to be removed by the stop component removing means 60 described later is as small as one or two, the removal can be performed easily and reliably.

  Next, the restraining part removing means 60 will be described.

  The role of the restraining part removing means 60 is to remove the abnormal bolt 1 restrained by the passage restricting means 17. Therefore, the bolt 1 is pushed out by any member or compressed air is blown onto the bolt 1. For example, various methods can be adopted.

  Although what is shown in FIG. 7 is a form which sprays compressed air, the bolt 1 is pushed out by an advancing / retracting type member other than that.

  A case where an advancing / retracting member is used will be described. As shown in FIG. 1, an air cylinder 61 is attached to a fixed plate 63 via a bracket 62. The fixed plate 63 is a plate member joined to the outer peripheral portion of the bowl 12 by welding or the like. The piston rod of the air cylinder 61 is a push rod 64, which pushes out the bolt 1 that is restrained at its tip.

  As shown in FIG. 5, the push rod 64 is disposed in a state where the push rod 64 is inclined in the width direction and the vertical direction with respect to the passage space forming member 45. It is supposed to be eliminated inward. That is, as shown in FIGS. 4 (A) and 5 (B), it is excluded in a direction that does not oppose the conveyance direction of the subsequent bolt 1.

  By selecting such an exclusion direction, the excluded bolt 1 does not interfere with the ingress movement of the subsequent bolt 1, so that the bolt 1 in the normal posture is immediately after the bolt 1 in the abnormal posture is removed. Has the effect of smooth transition. Furthermore, when the push rod 64 is stroked a plurality of times such as twice and three times, it is possible to surely disperse and eliminate when the bolt 1 being restrained is intertwined with the succeeding bolt 1.

  Since the push rod 64 is inclined as described above, the passage groove 65 is formed in the upper surface portion of the passage space forming member 45 in order to prevent the push rod 64 from interfering with other members.

  Further, the exclusion guide surface 49 has a phenomenon in which the bolt 1 in a normal posture moves to a place where the abnormal bolt 1 is stopped and pushes out the abnormal bolt 1, so that such a phenomenon is promoted. It is easy to exclude by the exclusion guide surface 49 made into an inclined surface. When such exclusion is performed, the bolt 1 in the subsequent normal posture moves on the receiving plate 50, and the exclusion is promoted.

  The example shown in FIG. 6 is a case where the exclusion guide surface 49 as described above is not provided at the end of the passage space forming member 45. In this case, the widened portion 66 is provided at the inlet side end of the sub passage space 48. Other than that, it is the same structure and effect | action as the example demonstrated previously.

  The example shown in FIG. 7 is a restraining part removing means 60 that injects and removes compressed air onto the bolt 1 that is restrained. An air hose 68 is connected to a nozzle hole 67 extending from the side of the passage space forming member 45. The other configuration is the same as each example described above.

  The compressed air jetted from the nozzle hole 67 is blown to the bolt 1 in a restrained state, and the bolt 1 is discharged in the same manner as in the case of the push rod 64.

  Next, an operation system of the restraining part removing unit 60 will be described.

  The operating system is shown in FIG. In other words, a component passage detection sensor (hereinafter simply referred to as a sensor) 70 is attached to the component supply pipe 20. The sensor 70 can be of various types, but in this embodiment, a general proximity switch that detects when the magnetic bolt 1 passes through the magnetic field is employed.

  The detection signal from the sensor 70 is input to the control device 71, and the air switching valve 72 is operated by the output signal from the control device 71. The air from the air switching valve 72 is supplied to or discharged from the air cylinder 61, so that the push rod 64 moves forward and backward. Further, an output signal from the control device 71 is supplied to the exciter 22.

  The control device 71 includes a timer device (timer).

  When the bolt 1 in a normal posture is passing without being restrained by the passage restricting means 17, detection signals are input from the sensor 70 to the control device 71 at regular intervals. The vibration continuation signal is supplied to the vibration generator 22. At the same time, a signal for maintaining the position where the push rod 64 is retracted is also input to the air switching valve 72.

  When the abnormal bolt 1 is restrained by the passage restricting means 17, the detection signal from the sensor 70 as described above is interrupted, so that the time measuring device starts measuring the time from the time when the sensor is stopped, and the predetermined time is counted. Then, an output signal from the control device 71 is input to the air switching valve 72, and operating air is supplied to and discharged from the air cylinder 61. By such air control, the push rod 64 repeatedly advances and retreats, and the bolt 1 that is stopped is pushed out into the receiving box 42.

  In the present invention, a part having a shape different from that shown in FIG. 9 can be restrained by the passage restricting means 17 and removed by the restraining part removing means 60.

  In the above-described embodiment, the passage restricting means 17 is disposed at the boundary between the component conveying path 15 and the delivery pipe 16, but in the second embodiment shown in FIG. The restraint part removing means 60 is assembled to the passage space forming member 45 in the middle of the part conveyance path 15. Other than that, the configuration is the same as the previous examples. The operations of the passage restricting means 17 and the restraining part removing means 60 are the same as in the previous examples.

  Therefore, the location of the passage restricting means 17 is expressed as “part conveyance path and / or part of delivery pipe”.

  The functions and effects of the embodiment described above are listed as follows.

  An abnormal part restrained by the passage restricting means 17 is removed by the restraining part removing means 60.

  If the passage restricting means 17 remains restrained, the subsequent bolt 1 is not sent out from the parts feeder 11, and unless the restrained bolt 1 is removed, the bolt supply to the target location is stopped, and productivity is increased. It will be reduced. However, according to the present invention, the bolt 1 that is restrained by the passage restricting means 17 (passage space forming member 45) is removed by the restraining part removing means 60, so that the resumption of the bolt supply is reliably achieved, A decrease in productivity can be minimized.

  When the bolt 1 to which the washer 4 is assembled is sent upright with the head 2 of the bolt 1 facing down, if the washer 4 is away from the head 2 of the bolt 1, the washer 4 A slight fall in contact with the member causes a short fall, or the center of gravity of the standing bolt 1 becomes a high position. . Therefore, when the bolt 1 whose position of the washer 4 is abnormal is prevented from being sent out, the standing bolt 1 sent from the parts feeder 11 can be accurately supplied to the target location without falling down. It becomes possible.

  When the washer 4 as described above is separated from the bolt head, the substantial height of the bolt head 2 is set to a dimension H2 from the end of the bolt head 2 to the washer 4, and such substantial Since the excessively high height (H2) is stopped by the passage restricting means 17, the bolt 1 having an abnormal washer position can be reliably removed.

  Further, when the bolt 1 that should be standing with the head 2 facing down is brought to the passage restricting means 17 while falling down for some reason, the bolt 1 is restrained by the passage restricting means 17 and stopped. It is removed by the push rod 64 of the component removing means 60. In this type of parts feeder 11, since the feeding vibration is applied to the bowl 12, the bolt 1 moving in the component conveyance path 15 may fall over even if it slightly catches foreign matter on the component conveyance path 15. . Since the bolt 1 that has fallen in this way is reliably removed by the push rod 64 of the restraining part removing means 60, the delay in feeding the subsequent bolt can be minimized and the decrease in productivity can be reduced.

  When an abnormal bolt 1 is not restrained by the passage restricting means 17 and the passage signal is generated from the parts passage detecting sensor 70 without interruption, the push rod 64 of the restraining part removing means 60 does not perform the removing operation. However, when the abnormal bolt 1 is restrained by the passage restricting means 17, the passage signal generated from the part passage detecting sensor 70 is interrupted. Therefore, when the time when the signal is interrupted reaches a predetermined time, the restraining part removing means is stopped. A signal for operating 60 is issued to forcibly remove the stopped abnormal bolt 1 and normal bolt delivery is resumed.

  Therefore, when the predetermined time is reached, the abnormal bolt 1 is surely removed by the stopping part removing means 60, and the operator does not have to perform troublesome removal work. Furthermore, by setting the predetermined time as short as possible, it is possible to shorten the stop time for sending out the bolts, thereby minimizing the decrease in productivity.

  Further, as described above, the control means for operating the stop component removing means 60 when the predetermined time is reached receives the above component passage detection sensor 70 and receives a signal from the sensor 70 to perform a time measuring operation, thereby stopping the stop component removing means 60. It is possible to form the control system with a simple control system 71 that supplies an operation signal to the control system 71 and to make the control system simple.

  Since the abnormal bolt 1 restrained by the passage restricting means 17, that is, the passage space forming member 45 is pushed out by the forward / backward push rod 64, the abnormal bolt 1 is forcibly removed. Therefore, the restrained bolt 1 can be reliably removed in a very short time, which is effective in minimizing the decrease in productivity. Further, since the bolt 1 is pushed out by the advancing / retracting push rod 64, the advancing / retracting push rod 64 can be moved 2 or 3 degrees even if the succeeding bolt 1 is entangled with the stopped bolt 1. The tangled bolts 1 can be dispersed and eliminated by applying an impact to the bolts 1 by stroke.

  By installing the main passage space 47 and the sub passage space 48 as described above, the head 2 passes through the main passage when the standing bolt 1 with the head portion 2 on the lower side has a normal head height. The shaft portion 3 passes through the space 47 and the sub-passage space 48. And when the substantial height of the head 2 is excessive, the passage through the main passage space 47 is impossible, so that reliable passage prevention can be obtained.

  Since the passage restricting means 17 is disposed at the boundary between the parts conveying path 15 and the delivery pipe 16, the passage of the abnormal bolt 1 is finally restricted in the vicinity of the delivery location of the parts feeder 11, thereby causing abnormalities. Prevention of delivery of the bolt 1 is reliably achieved. Further, since the passage restricting means 17 is disposed in the vicinity of the downstream side end of the component conveying path 15, the first removing means 31 and the second removing means 39 for removing the abnormal bolt 1 in the upstream component conveying path 15. The removal means of the abnormal bolt 1 in the parts feeder 11 can be realized by a double or triple system configuration, and the abnormal bolt 1 can be reliably prevented from being sent out.

  In order to set the bolt 1 that has moved along the component conveying path 15 to a normal posture in which the head 2 is on the lower side, the standing means 25 functions and is sent out in a predetermined standing posture. In particular, about 95% of the bolts 1 transferred to the component conveyance path 15 are in a state of being overturned. The remaining 5% of the bolt 1 stands up, and if about 5% of the bolt 1 is sent out, about 5% of the part conveyance path 15 is sent out. Remarkably low.

  In order to improve such delivery efficiency, the standing means 25 can raise many bolts 1 to raise the delivery efficiency as the parts feeder 11. Normally, the bowl 12 is provided with a feed vibration, so that it is difficult to improve the ratio of the standing parts because the bolt 1 in the falling position falls down again after being converted into the standing position. Finally, about 50% to 55% of the parts were able to achieve the standing posture.

  Since the bolt 12 having an abnormally long length only in the shaft portion 3 may be mixed in the bowl 12 of the parts feeder 11, it is necessary to eliminate the bolt 1 having such an abnormal length. In order to fulfill such an exclusion function, a first removal means 31 is prepared for setting the height h2 of the passage opening 34 of the bolt 1 to a predetermined value. The bolt 1 having an abnormal length in the standing state cannot pass through the first removing means 31 and is removed here. In addition, the abnormally long bolt 1 in the overturned state passes through the first removing means 31 and is transferred to the downstream side in the conveying direction.

  On the other hand, the upright bolt 1 of normal length passes through the first removing means 31 (gauge 33) and is transferred to the downstream side in the conveying direction while standing. Then, the bolt 1 having a normal length that has fallen for some reason passes through the first removal means 31 and is transferred to the downstream side in the transport direction.

  The bolts 32 and 1 having the abnormal length and the normal length that have fallen are removed from the component conveying path 15 through the second removing means 39. Only the standing bolt 1 having a normal length does not pass through the second removing means 39 (gauge 40) and is transferred to the downstream side in the component conveying direction.

  In this way, the bolt 1 having the normal length standing posture remaining on the component conveying path 15 reaches the passage restricting means 17. The behavior of the bolt 1 that has reached the passage restricting means 17 is the same as that of the above-described embodiment.

Shape, size and orientation etc. bolt 1 is abnormal, the passage by passage restricting means 17 is restrained, is removed by the restraining component removal means 60.

  If the passage restricting means 17 remains restrained, the subsequent bolt 1 is not sent out from the parts feeder 11, and unless the restrained bolt 1 is removed, the bolt supply to the target location is stopped, and productivity is increased. It will be reduced. However, according to the present invention, since the bolt 1 that is restrained by the passage restricting means 17 is removed by the push rod 64 of the restraining part removing means 60, the resumption of the bolt supply is surely achieved and the productivity is improved. Degradation can be minimized.

  According to the present invention, since the abnormal bolt restrained by the passage restricting means is forcibly removed by the restraining part removing means, the normal parts are surely sent from the parts feeder and restrained. The abnormal bolt that is present is removed in a short time, and normal bolt delivery is resumed. Therefore, it can be used in a wide range of industrial fields, such as bolts used in automobile bodies and bolts used in household appliances.

It is the top view and side view which show the Example of this invention. It is a top view which shows a part of bowl. It is sectional drawing corresponding to each sectional line part of FIG. It is a top view of a passage control means and a preliminary selection means, and a sectional view of each part. It is the side view and top view of a stop component removal means. It is the side view and top view which show the other example of a passage control means. It is a top view which shows the other example of a stop component removal means. It is a top view at the time of changing the arrangement place of a passage control means. It is a side view of the component used as the object of delivery by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bolt 2 Head 3 Shaft part, Bolt shaft 4 Washer 5 Parts 11 Parts feeder 12 Bowl 13 Bottom plate 14 Outer wall board 15 Parts conveyance path 16 Delivery pipe 17 Passing restriction means 25 Standing means 31 First removal means 32 Abnormally long bolt 33 Gauge 39 Second removal means 40 Gauge 45 Passing space forming member 47 Main passage space 48 Sub passage space 52 Preliminary sorting means 60 Stopping part removal means 64 Push rod 70 Part passage detection sensor 71 Controller

Claims (5)

The parts to be delivered include a head part and a shaft part formed integrally with the head part, and a bowl of a parts feeder that accommodates the parts has a circular bottom plate and an outer periphery of the bottom plate. A spiral part conveyance path formed in a step shape along the inner wall of the outer wall plate, and a delivery pipe is connected to the component conveyance path, In a type that is sent out from the delivery pipe in a normal posture state in which the head part is on the lower side and the shaft part is upright,
Passage restricting means for prohibiting passage of a part having an abnormal substantial height or part posture of the head is provided in a part of the parts conveying path and / or the delivery pipe, and is restricted by the passage restricting means. restraining component removing means for removing by which part is provided,
Preliminary sorting means is disposed upstream of the passage restriction means,
The preliminary sorting means includes a narrow portion formed by narrowing the width of the component conveying path, a gauge member arranged along the narrow portion, and a parallel arrangement with the narrow portion formed on the gauge member. A receiving surface and a passing space that is open to one side below the receiving surface,
The height dimension of the passage space is set to be slightly larger than the substantial height of the head of a component in a normal posture, and the dimension in plan view between the receiving surface and the edge of the narrow portion is When a part with a normal posture passes, the head enters the passage space and supports the narrow part so that the head does not fall. The part is set to come into contact with the receiving surface and fall from the narrow part,
An exclusion guide surface that is formed in an inclined state at the upstream end of the passage restricting means and promotes pushing out abnormal parts that are restrained by the passage restricting means by moving the parts in a normal posture is provided. A parts feeder characterized in that a receiving plate continuing to the narrow portion is provided on the upstream side of the exclusion guide surface .   The restraining part removing means restrains the passage restricting means when the part passage detecting sensor arranged on the downstream side in the parts conveying direction of the restraining part removing means does not detect the passage of the parts for a predetermined time. The parts feeder according to claim 1, wherein the parts feeder is configured to perform an operation of removing the parts that have been used.   The parts feeder according to claim 1, wherein the restraining part removing means is constituted by an advancing and retracting member that pushes out a part restrained by the passage restricting means.   The passage restricting means includes a main passage space through which a head of a component having a normal posture and a substantial height of the head passes, and a sub passage space through which a shaft portion in an upright state passes. The parts feeder in any one of Claims 1-3 provided with. The parts to be delivered include a head part and a shaft part formed integrally with the head part, and a bowl of a parts feeder that accommodates the parts has a circular bottom plate and an outer periphery of the bottom plate. A spiral part conveyance path formed in a step shape along the inner wall of the outer wall plate, and a delivery pipe is connected to the component conveyance path, In a type that is sent out from the delivery pipe in a normal posture state in which the head part is on the lower side and the shaft part is upright,
Standing means for standing the part in the normal posture in the parts conveying path, and a part in the standing state in which the shaft portion is longer than a predetermined length while being disposed on the downstream side of the standing means in the part transporting direction are removed. First removing means that is disposed on the downstream side of the first removing means in the parts conveying direction, and second removing means that removes the fallen parts whose shaft portion is longer than a predetermined length, A passage restricting means disposed on the downstream side of the removing means in the parts conveying direction and prohibiting passage of a part having an abnormal substantial height or part posture of the head; A restraining part removing means for removing the parts restrained by the means is provided ,
Preliminary sorting means is disposed upstream of the passage restriction means,
The preliminary sorting means includes a narrow portion formed by narrowing the width of the component conveying path, a gauge member arranged along the narrow portion, and a parallel arrangement with the narrow portion formed on the gauge member. A receiving surface and a passing space that is open to one side below the receiving surface,
The height dimension of the passage space is set to be slightly larger than the substantial height of the head of a component in a normal posture, and the dimension in plan view between the receiving surface and the edge of the narrow portion is When a part with a normal posture passes, the head enters the passage space and supports the narrow part so that the head does not fall. The part is set to come into contact with the receiving surface and fall from the narrow part,
An exclusion guide surface that is formed in an inclined state at the upstream end of the passage restricting means and promotes pushing out abnormal parts that are restrained by the passage restricting means by moving the parts in a normal posture is provided. A parts feeder characterized in that a receiving plate continuing to the narrow portion is provided on the upstream side of the exclusion guide surface .

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