JP2009035385A - Shaft feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-scaled shaft feeder simplified in operating method thereof. <P>SOLUTION: This shaft feeder comprises a push-up means, which is formed of a plate-like body supported freely to move in the vertical direction and of which upper end is formed into a movable holding surface inclined low on a shaft destination side thereof, a driving means for reciprocating the push-up means in the vertical direction, a holding means formed of a plate-like body, which is provided along the push-up means and of which upper end is formed into a fixed holding surface inclined low on a shaft destination side thereof, a storage means for storing the shafts and supplying the shafts to the movable holding surface, and a discharging means for correcting the shafts, which are fed to the fixed holding surface, aligning one ends thereof in a predetermined position so as to hold them in a discharge position. When the movable holding surface and the fixed holding surface become flush with each other near the top dead center in reciprocation of the push-up means in the vertical direction, the shaft held in the movable holding surface rolls to be fed to the fixed holding surface, and held. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to the technical field of parts feeders. In particular, one by one from a low position for storing parts having a relatively large size such as a shaft used for an ink ribbon cassette having an axial length of about 10 cm to a shaft or a bar to a high position for delivery. The present invention relates to a shaft feeder for separating and pushing up, feeding and positioning at a fixed position.

A bowl feeder type parts feeder that supplies and aligns parts such as a shaft by vibrating a cylindrical container (bowl) is known (Patent Document 1). However, when the size of the part is large, the size of the container (bowl) needs to be increased, so the parts feeder itself becomes a huge device. Therefore, there is a problem that it is difficult to secure a necessary installation space.
Also, a parts feeder is known that includes a lifting plate that pushes up parts and an alignment rail that aligns the parts (Patent Document 2). However, the function of the lifting plate focuses on parts feeding and bridge breaking. Although the parts can be reliably fed by the lifting plate, it is impossible to control the number of parts to be supplied. For the number and positioning of the parts, there is a problem that it is necessary to add other power separately after feeding by the lifting plate.

Also known are multi-stage push-up type parts feeder devices (Patent Documents 3 and 4) that supply headed parts such as screws and bolts. In these apparatuses, it is possible to supply parts one by one. However, it is the same as the device (Patent Document 2), and does not have a function of supplying the parts after being supplied so as to be positioned at a fixed position. That is, in the present situation, in order to position the parts after supply, it is necessary to separately provide an alignment rail or the like. Therefore, there are many problems in terms of the scale (size) of the apparatus, the number of power sources, the price of the apparatus, and the energy consumed by the apparatus.
In addition, most of the conventional parts feeders were developed for the purpose of supplying materials to the assembly process of the automated line, and many of the equipment operation methods are complicated, so that factory operators can operate them. It was necessary to acquire certain knowledge. For this reason, humans and machines coexist like the cell production system (highly self-contained production method in which one or a small number of workers create one product from the beginning to the end) that has become the mainstream in recent assembly processes. There is no one developed for the purpose of integration into the automated line.
Akira 60-110317 JP2002-302237 JP-A-11-59869 JP 61-166418 A

  The present invention has been made to solve the above problems. The purpose is a small-scale device that can easily secure the installation space, the number of parts to be supplied and the positioning to a fixed position can be controlled by one mechanism, and the operation method of the device is simple and suitable for the cell production system. To provide a shaft feeder.

A shaft feeder according to a first aspect of the present invention is a shaft feeder including a protrusion means, a drive means, a holding means, a storage means, and a discharge means, wherein the protrusion means is movable in the vertical direction. The upper end of the plate is a movable holding surface that holds the shaft with a low inclined surface on the shaft destination side, and the driving means reciprocates the protrusion means in the vertical direction. The holding means is a plate-like body provided along the protrusion means, and an upper end of the holding means is a fixed holding surface that holds the shaft with a low inclined surface on the supply destination side of the shaft, and the storage means Stores the shaft and supplies the shaft to the movable holding surface, and the discharging means corrects one end of the shaft fed to the fixed holding surface to a predetermined position and holds the shaft in the discharging position. The rushing hand When the movable holding surface and the fixed holding surface are in the same plane in the vicinity of the top dead center in the vertical reciprocation of the shaft, the shaft held by the movable holding surface rolls and is fed to the fixed holding surface. A shaft feeder characterized by being held.
The shaft feeder according to claim 2 of the present invention is the shaft feeder according to claim 1, wherein the discharge means is a plate-like body superimposed on the holding means, and the upper end of the plate-like body is the shaft. The destination side has a high inclined surface, and the inclined surface is paired with the inclined surface of the fixed holding surface to form a V-shaped valley, and the cross section is the same on the extension of the valley. A pulley having a trough portion is provided, and the shaft held by the trough portion of the plate-like body and the trough portion of the pulley moves along the trough portion when the pulley rotates, and the destination The shaft feeder is modified so as to be in a predetermined position when one end of the shaft comes into contact with a stopper provided on the shaft.
The shaft feeder according to a third aspect of the present invention is the shaft feeder according to the second aspect, wherein the pulley includes a transmission means for converting a reciprocating motion of the driving means into a rotation and transmitting the rotation to the rotating shaft of the pulley. A shaft feeder that is rotationally driven by the driving means.
A shaft feeder according to a fourth aspect of the present invention is the shaft feeder according to the second or third aspect, wherein a surface material that allows the shaft to slide is used for a trough portion of the plate-like body, and a trough of the pulley is used. The shaft feeder is characterized in that the shaft is made of a surface material that is difficult to slide.
A shaft feeder according to a fifth aspect of the present invention is the shaft feeder according to any one of the first to fourth aspects, wherein the protrusion means includes a first protrusion means, a second protrusion means, and a third protrusion. The holding means is composed of three holding means of a first holding means, a second holding means, and a third holding means,
The movable holding surface of the first protruding means and the fixed holding surface of the first holding means are flush with each other near the top dead center in the vertical reciprocation of the first protruding means, and the movable holding surface holds the first holding means. The shaft that is rolled and fed to the fixed holding surface is held,
The movable holding surface of the second protruding means and the fixed holding surface of the first holding means are flush with each other near the bottom dead center in the vertical reciprocation of the second protruding means, and the fixed holding surface holds The shaft that is rolled and fed to the movable holding surface is held,
The movable holding surface of the second protruding means and the fixed holding surface of the second holding means are flush with each other near the top dead center in the vertical reciprocation of the second protruding means, and the movable holding surface holds the second holding means. The shaft that is rolled and fed to the fixed holding surface is held,
The movable holding surface of the third protruding means and the fixed holding surface of the second holding means are flush with each other near the bottom dead center in the vertical reciprocation of the third protruding means, and the fixed holding surface holds the same. The shaft that is rolled and fed to the movable holding surface is held,
The movable holding surface of the third protruding means and the fixed holding surface of the third holding means are flush with each other near the top dead center in the vertical reciprocation of the third protruding means, and the movable holding surface holds the movable holding surface. The shaft that is rolled and fed to the fixed holding surface is held,
The shaft feeder is characterized in that the discharge means holds the shaft fed to the fixed holding surface of the third holding means at the discharge position.
A shaft feeder according to a sixth aspect of the present invention is the shaft feeder according to any one of the first to fifth aspects, wherein an inclination angle between the movable holding surface and the fixed holding surface which are the inclined surfaces is relative to a vertical surface. A shaft feeder having a range of 40 degrees to 50 degrees.
Moreover, the shaft feeder which concerns on Claim 7 of this invention is a shaft feeder in any one of Claims 1-6. The plate | board thickness of the protrusion means and the holding means which are the said plate-shaped bodies is larger than the diameter of a shaft. A shaft feeder which is large and smaller than 1.35 times the diameter of the shaft.
A shaft feeder according to an eighth aspect of the present invention is the shaft feeder according to any one of the first to seventh aspects, wherein the storage means includes at least a front side surface, a rear side surface, a left side surface, and a right side surface. The front side is at least part of the surface of the protruding means and the holding means that are the plate-like body, and the rear side is a low inclined surface on the front side, and the left side and the right side One of the surfaces is a vertical surface, and the other is a shaft feeder having a low inclined surface on the vertical surface side.

According to the shaft feeder of the first aspect of the present invention, the upper end of the protruding means that is a plate-like body that is movably supported in the vertical direction is a movable holding surface that holds the shaft, and along the protruding means. The upper end of the holding means, which is a plate-like body, is a fixed holding surface that holds the shaft. The movable holding surface and the fixed holding surface are inclined surfaces having a low supply destination side of the shaft. The storage means stores the shaft, and the shaft is supplied to the movable holding surface by rolling the shaft by the action of gravity. Further, the discharging means corrects the one end of the shaft fed to the fixed holding surface to a predetermined position and holds the shaft at the discharging position. In this configuration, the movable holding surface and the fixed holding surface are flush with each other in the vicinity of the top dead center in the vertical reciprocation of the protrusion means when the protrusion means reciprocates in the vertical direction by the driving means. In addition, the shaft held by the movable holding surface is rolled and fed to the fixed holding surface, and the shaft is corrected by the discharging means so that one end thereof is at a predetermined position and held at the discharging position. In other words, the shaft is supplied with the protruding means as a reciprocating plate-like body as a basic mechanism, and the shaft is positioned at the discharge position by the discharge means. The number of shafts to be held can be determined by the dimensions of the movable holding surface and the fixed holding surface (thickness of the plate-like body). Therefore, it is a small-scale device, the installation space can be easily secured, the number of parts to be supplied and the positioning to a fixed position can be controlled by one mechanism, the operation method of the device is simple, and the shaft feeder is suitable for the cell production system Is provided.
In the shaft feeder according to claim 2 of the present invention, in the shaft feeder according to claim 1, the discharge means is a plate-like body superimposed on the holding means, and the upper end of the plate-like body is the shaft feeder. The destination side is a high inclined surface, and the inclined surface is paired with the inclined surface of the fixed holding surface to form a valley having a V-shaped cross section. A pulley having a trough having the same cross section is provided on the extension of the trough. A shaft is hold | maintained by the trough part of a plate-shaped body, and the trough part of a pulley, and when the pulley rotates, it moves along a trough part. A stopper is provided at the destination. When one end of the shaft that moves to the stopper comes into contact with the stopper, the correction is made so as to be in a predetermined position, and the shaft stops. That is, the axial direction of the shaft is defined by the valley portion, and the position in the axial direction is defined by the stopper. Therefore, the discharge position of the shaft can be set to a predetermined position in which both the direction and the position are defined.
According to a third aspect of the shaft feeder of the present invention, in the shaft feeder according to the second aspect, the pulley is connected via a transmission means for converting the reciprocating motion of the driving means into rotation and transmitting the rotation to the rotating shaft of the pulley. It is rotationally driven by the drive means. Therefore, driving means for only the pulley is not required, and a positioning operation synchronized with the discharge of the shaft feeder is obtained, so that the configuration can be simplified and the energy can be saved.
Further, according to the shaft feeder according to claim 4 of the present invention, in the shaft feeder according to claim 2 or 3, a surface material in which the shaft easily slips is used for the valley portion of the plate-like body, and the valley portion of the pulley is used. For this, a surface material that does not slide easily is used. Therefore, highly accurate and reliable positioning operation can be obtained.
Moreover, according to the shaft feeder which concerns on Claim 5 of this invention In the shaft feeder which concerns on any one of Claims 1-4, a protrusion means is a 1st protrusion means, a 2nd protrusion means, and a 3rd protrusion. The holding means is constituted by three holding means of a first holding means, a second holding means and a third holding means. The first to third thrusting means plates, which are three plate-like bodies, are connected, for example, on the lower side and reciprocate in the vertical direction, so that the shaft is stepped in three stages. First, due to the reciprocating motion, the movable holding surface of the first protrusion means at the lowest position closest to the storage means plays the role of breaking the bridge, thereby ensuring the supply of the shaft. For example, only one shaft is supplied to the next second stage depending on the dimensions (thickness of the plate-like body) of the movable holding surface and the fixed holding surface. As an extremely rare case, even if two shafts are fed to the second stage, the supply to the plurality of discharge positions can be reliably avoided by the shaft feeding to the next third stage. it can.
Moreover, according to the shaft feeder which concerns on Claim 6 of this invention In the shaft feeder which concerns on any one of Claims 1-5, the inclination angle in the movable holding surface which is the said inclined surface, and a fixed holding surface is with respect to a perpendicular surface. The range is 40 to 50 degrees. In this angle range, the role of bridge breakage is effective, and the shaft can be securely held.
A shaft feeder according to a fourth aspect of the present invention is the shaft feeder according to any one of the first to third aspects, wherein the plate-like body and the holding means are thicker than the shaft diameter. Smaller than 1.35 times the diameter of the shaft. When the thickness is within this range, the role of bridge breakage is effective, and only one shaft can be reliably held.
Moreover, according to the shaft feeder which concerns on Claim 7 of this invention, in the shaft feeder which concerns on any one of Claims 1-6, the said storage means at least has a front side surface, a rear side surface, a left side surface, and a right side surface. At least a part of the front side is a surface of the protruding means and the holding means, and the rear side is a low inclined surface on the side of the front side, and the left side and the side One of the right side surfaces is a vertical surface, and the other side is a low inclined surface on the side of the vertical surface. That is, the shaft that is inserted so as to be parallel to the front side receives a force from the inclined surface due to the action of gravity, but the direction is directed to the front side and the vertical side. Therefore, the shaft can be naturally supplied in a predetermined posture with respect to the movable holding surface of the protrusion means.

Next, embodiments of the present invention will be described with reference to the drawings. An example of the structure in the shaft feeder of this invention is shown in FIGS. 1 is a side view, FIG. 2 is a partially enlarged view, FIG. 3 is a front view, and 4 is a top view. 1 to 4, reference numerals 1a, 1b and 1c are movable protrusion plates, 11a, 11b and 11c are movable holding surfaces, 2a, 2b and 2c are fixed holding plates, 21a, 21b and 21c are fixed holding surfaces, An air cylinder, 4 is a storage part, 5 is a discharge part, 51 is a rack, 52 is a pinion, 53 is a pulley, 100, 100a, 100b, 100c, and 100d are shafts.
The movable upper plates 1a, 1b, and 1c are plate-like bodies that are movably supported in the vertical direction, and the upper ends of the movable upper plates 1a, 1b, and 1c have a low inclined surface on the shaft destination side, and the movable holding surfaces 11a, 11b and 11c. That is, the movable protruding plates 1a, 1b, 1c are specific examples of the protruding means.
Here, the vertical direction is a direction that coincides with the direction in which gravity acts (of course, it is not an exact coincidence but has a width that is allowed in the operation of the shaft feeder). An inclined surface is a surface inclined with respect to a horizontal plane.
In the example shown in FIGS. 1 to 4, the movable protrusion plate is three plate bodies, that is, three plate bodies composed of the movable protrusion plate 1 a, the movable protrusion plate 1 b, and the movable protrusion plate 1 c. The three movable protrusion plates 1a, 1b, 1c are integrally coupled and fixed near the opposite side of the movable holding surfaces 11a, 11b, 11c. Accordingly, the three movable protrusion plates 1a, 1b, and 1c reciprocate in the vertical direction as a unit. The position of the movable holding surface 11b of the movable protruding plate 1b is higher than the position of the movable holding surface 11a of the movable protruding plate 1a. Further, the position of the movable holding surface 11c of the movable protruding upper plate 1c is higher than the position of the movable holding surface 11b of the movable protruding upper plate 1b. The difference in position between the three movable holding surfaces 11a, 11b, and 11c is equal to or less than the amplitude (stroke) when the three movable protruding plates 1a, 1b, and 1c reciprocate in the vertical direction. See “Up and Down by Air Cylinder Stroke” in FIG. The movable holding surface 11a is substantially at the same position as the bottom of the reservoir at the bottom dead center in the reciprocating motion.

The fixed holding plates 2a, 2b, and 2c are plate-like bodies provided along the movable protruding plates 1a, 1b, and 1c, and the upper ends of the fixed holding plates 2a, 2b, and 2c are inclined surfaces on the lower side of the shaft to hold the shaft. Fixed holding surfaces 21a, 21b, and 21c are formed. That is, the fixed holding plates 2a, 2b, 2c are specific examples of holding means.
In the example shown in FIGS. 1 to 4, the fixed holding plate is three plate-like bodies, that is, three plate-like bodies including a fixed holding plate 2 a, a movable protrusion plate 2 b, and a movable protrusion plate 2 c. Each of the three fixed holding plates 2a, 2b, 2c is fixed to a frame or the like of the shaft feeder. The position of the fixed holding surface 21b of the fixed holding plate 2b is higher than the position of the fixed holding surface 21a of the fixed holding plate 2a. Further, the position of the fixed holding surface 21c of the fixed holding plate 2c is higher than the position of the fixed holding surface 21b of the fixed holding plate 2b. The difference between the positions of the three fixed holding surfaces 21a, 21b, and 21c is less than the amplitude when the three movable protruding plates 1a, 1b, and 1c reciprocate in the vertical direction.

  As shown in FIGS. 1-4, the movable protrusion board 1a, 1b, 1c and the fixed holding | maintenance board 2a, 2b, 2c are piled up alternately. The surfaces of the plate-like movable protruding plates 1a, 1b, and 1c come into contact with the surfaces of the plate-like fixed holding plates 2a, 2b, and 2c that are vertically set and fixed to the frame or the like of the shaft feeder. Yes. Due to the contact, the movable protrusion plates 1a, 1b, 1c are supported so as to be movable in the vertical direction.

As the movable protrusion plates 1a, 1b, 1c reciprocate, the movable holding surfaces 11a, 11b, 11c and the fixed holding surfaces 21a, 21b, 21c may be included in the same plane. In the example shown in FIGS. 1 to 4, the movable holding surface 11 a and the fixed holding surface 21 a, and the movable holding surface 11 b and the fixed holding near the top dead center in the reciprocating movement of the movable protruding plates 1 a, 1 b and 1 c. The surface 21b and the movable holding surface 11c and the fixed holding surface 21c are on the same plane. By being in the same plane in this way, the shaft held by the movable holding surface near the top dead center in the vertical reciprocation of the movable upper plate rolls and is fed to the fixed holding surface.
Similarly, in the example shown in FIGS. 1 to 4, the movable holding surface 11 b and the fixed holding surface 21 a are also moved in the vicinity of the bottom dead center in the reciprocating movement of the movable upper plates 1 a, 1 b, 1 c, and the movable holding surface 11 c. And the fixed holding surface 21b are on the same plane. By being in the same plane as described above, the shaft held by the fixed holding surface is fed around the movable holding surface in the vicinity of the bottom dead center in the vertical reciprocation of the movable upper plate.

  In the above description, it is clear that the shaft having a circular cross section rolls due to the action of gravity even if the movable holding surfaces 11a, 11b, 11c and the fixed holding surfaces 21a, 21b, 21c are not exactly the same plane. However, when the position of the inclined surface to be rolled is higher than the position of the original inclined surface to roll, the shaft is difficult to roll and may not roll. On the other hand, when the position of the inclined surface to which the roller rolls coincides with or lower than the position of the original inclined surface to roll, the shaft easily rolls and can reliably roll. Therefore, the amplitude when the three movable protrusion plates 1a, 1b, 1c reciprocate in the vertical direction is the position of each of the three movable holding surfaces 21a, 21b, 21c and the three fixed holding surfaces 21a, 21b, 21c. It is preferable to increase the difference. As a result, the shaft can be smoothly and reliably transferred between the movable protrusion plate and the fixed holding plate.

It is preferable that the inclination angles of the movable holding surfaces 11a, 11b, and 11c and the fixed holding surfaces 21a, 21b, and 21c that are inclined surfaces for rolling the shaft are in the range of 40 to 50 degrees with respect to the vertical surface. In this angle range, the role of bridge breakage is effective, and the shaft can be securely held. “Bridge break” means that the combined state in which the shafts are stacked is broken into a discrete state.
The plate thickness of the movable protruding plates 1a, 1b, 1c and the fixed holding members 2a, 2b, 2c is preferably larger than the shaft diameter and smaller than 1.35 times the shaft diameter. When the thickness is within this range, the role of bridge breakage is effective, and only one shaft can be reliably held.

The air cylinder 3 is an actuator for reciprocating the movable protrusion plates 1a, 1b, 1c in the vertical direction. That is, it is a specific example of the driving means.
As shown in FIGS. 1 to 4, the three movable protruding plates 1a, 1b, and 1c are integrally coupled and fixed near the opposite side of the movable holding surfaces 11a, 11b, and 11c. The output shaft of the air cylinder 3 is coupled to the movable protrusion plates 1a, 1b, 1c near the portion where the coupling is fixed. Needless to say, the air cylinder 3 has a vertical direction in which the moving direction of the output shaft coincides with the reciprocating direction of the movable protruding plates 1a, 1b, 1c. Further, the amplitude when the movable upper plate 1a, 1b, 1c reciprocates in the vertical direction and the stroke of the output shaft of the air cylinder 3 are located. The air cylinder 3 is attached with high-pressure air supply means (not shown), which is a power source, and control means (not shown) for controlling the reciprocation.
The air cylinder 3 is also an actuator for reciprocating the rack 51 in the vertical direction in the example shown in FIGS. The rack 51 is coupled to the output shaft of the air cylinder 3 and reciprocates integrally with the output shaft of the air cylinder 3. The rack 51 is paired with the pinion 52 to form a rack and pinion mechanism. Therefore, the pinion 52 rotates left and right as the air cylinder 3 reciprocates.

The storage unit 4 stores the shaft 100 and supplies the shaft 100 to the movable holding surface. That is, the storage unit 4 is a specific example of storage means.
The storage part 4 stores the shaft 100, and the shaft 100 is pressed against the side surface (wall) of the storage part 4 by the action of gravity. Part of the side surfaces are movable protruding plates 1a, 1b, 1c. Therefore, a part of the shaft 100 pressed against the side surface (wall) is pressed against the movable holding surfaces 11a, 11b, and 11c. This state is a state in which the shaft 100 is supplied to the movable holding surface. Of the movable holding surfaces 11a, 11b, and 11c, the shaft 100 is supplied mainly to the movable holding surface 11a. The shafts supplied and held by the movable holding surface 11a are shafts 100a and 100d (see FIG. 5). However, when the amount of the shaft 100 stored in the storage unit 4 is large, the stored shaft 100 reaches a high position, so that the shaft 100 may be supplied to the movable holding surfaces 11b and 11c.

  As shown in FIGS. 1 to 4, the storage unit 4 includes at least a front side surface, a rear side surface, a left side surface, and a right side surface, and at least a part of the front side surface is a plate-like body. 1a and the surface of the fixed holding plate 2a. Further, the rear side surface is an inclined surface having a lower front side surface. One of the left side surface and the right side surface is a vertical surface, and the other is an inclined surface having a low vertical surface side. That is, the shaft that is inserted so as to be parallel to the front side receives a force from the inclined surface due to the action of gravity, but the direction is directed to the front side and the vertical side. Therefore, the shaft can be naturally supplied in a predetermined posture with respect to the movable holding surface of the protrusion means.

The discharge part 5 is a member that holds the shaft (100a, 100b, etc.) fed to the fixed holding surfaces 21a, 21b, 21c at the discharge position. That is, the discharge unit 5 is a specific example of the discharge means.
In the example shown in FIGS. 1 to 4, the discharge unit 5 is a plate-like body superimposed on the fixed holding plate 2 c. The upper end of the plate-like body is an inclined surface with a high shaft destination. That is, the upper end of the discharge portion 5 is an inclined surface in the opposite direction with respect to the fixed holding surface 21c of the fixed holding plate 2c. A valley portion having a V-shaped cross section is formed by the inclined surface (reverse inclined surface) at the upper end of the discharge portion 5 and the inclined surface of the fixed holding surface 21c.

  A pulley 53 having a trough having the same cross section is provided on the extension of the trough, and the shaft 100 is held by the trough of the plate-like body and the trough of the pulley. The pulley 53 has a common rotating shaft with the pinion 52, and the pulley 53 and the pinion 52 are integrated. Therefore, when the pinion 52 rotates left and right by the reciprocation of the rack 51, the pulley 53 also rotates left and right. As the pulley 53 rotates, the shaft 100 held along the valley moves. A stopper (not shown) is provided at the movement destination, and one end of the shaft 100 abuts against the stopper. Thereby, correction is performed so that the position where the shaft 100 is held becomes a predetermined position. Thus, the position of the shaft 100 corrected so that the held position becomes a predetermined position is the discharge position of the shaft. The shaft held at the discharge position is transferred to another place, for example, an assembly target in an assembly line, by a robot hand or the like.

Note that the movement direction of the held shaft 100 varies depending on the forward and backward paths of the rack 51, or ascending and descending. The movable holding surfaces 11a, 11b, and 11c are raised and the shaft 100 is supplied to the trough, and the movable holding surfaces 11a, 11b, and 11c are lowered to prepare for the supply of the next shaft 100. Therefore, normally, a stopper is provided in the moving direction of the shaft 100 when the rack 51 descends.
In addition, when using a hard material such as a metal, plastic, etc., where the shaft easily slides in the valley portion of the plate-like body, and using a surface material such as a rubber-based material where the shaft does not slide easily in the valley portion of the pulley, A highly accurate and reliable positioning operation can be obtained, which is preferable.

The configuration has been described above. Next, the operation of the shaft feeder according to the present invention will be described. FIG. 5 is an explanatory view of the operation of feeding the shaft in the shaft feeder of the present invention. The order of operation will be described later with reference to FIG.
First, in FIG. 5A, the movable upper plates 1a, 1b, 1c driven by the air cylinder 3 are raised in the vertical direction. At this time, the movable holding surface 11a rises while holding the shaft 100a supplied from the storage unit 4.
Next, in FIG. 5 (B), when it reaches the top dead center near the reciprocating motion due to its rise, the movable holding surface 11a becomes flush with the fixed holding surface 21a. At this time, the shaft 100a rolls and is fed from the movable holding surface 11a to the fixed holding surface 21a and is held by the fixed holding surface 21a.
Next, in FIG. 5C, the movable upper plates 1a, 1b, 1c driven by the air cylinder 3 are lowered in the vertical direction. At this time, the fixed holding surface 21a remains while holding the shaft 100a fed from the movable holding surface 11a.
Next, in FIG. 5D, when it reaches the bottom dead center near the reciprocating motion due to its lowering, the movable holding surface 11b becomes flush with the fixed holding surface 21a. At this time, the shaft 100a rolls and is fed from the fixed holding surface 21a to the movable holding surface 11b and is held by the movable holding surface 11b. Further, the shaft 100d is supplied from the storage unit 4 to the movable holding surface 11a.

Next, in FIG. 5A, the movable upper plates 1a, 1b, 1c driven by the air cylinder 3 are raised in the vertical direction. At this time, the movable holding surface 11b moves up while holding the shaft 100b (corresponding to the shaft 100a in FIG. 5D) fed from the fixed holding surface 21a.
Next, in FIG. 5 (B), when it reaches the top dead center near the reciprocating motion due to its rise, the movable holding surface 11b becomes flush with the fixed holding surface 21b. At this time, the shaft 100b rolls and is fed from the movable holding surface 11b to the fixed holding surface 21b and is held by the fixed holding surface 21b.
Next, in FIG. 5C, the movable upper plates 1a, 1b, 1c driven by the air cylinder 3 are lowered in the vertical direction. At this time, the fixed holding surface 21b remains while holding the shaft 100b fed from the movable holding surface 11b.
Next, in FIG. 5D, when it reaches the bottom dead center near the reciprocating motion due to the lowering, the movable holding surface 11c is flush with the fixed holding surface 21b. At this time, the shaft 100b rolls and is fed from the fixed holding surface 21b to the movable holding surface 11c and is held by the movable holding surface 11c.

Next, in FIG. 5A, the movable upper plates 1a, 1b, 1c driven by the air cylinder 3 are raised in the vertical direction. At this time, the movable holding surface 11c moves up while holding the shaft 100c (corresponding to the shaft 100b in FIG. 5D) fed from the fixed holding surface 21b.
Next, in FIG. 5B, when the lift reaches the top dead center near the reciprocating motion, the movable holding surface 11c becomes flush with the fixed holding surface 21c. At this time, the shaft 100c rolls and is fed from the movable holding surface 11c to the valley portion, that is, the discharge position by the fixed holding surface 21c and the discharge portion 5, and is held at the discharge position. From immediately after the time shown in FIG. 5B to immediately before the next time shown in FIG. 5B, the shaft 100c is transferred to another place by a robot hand or the like.

It is a figure (side view) which shows an example of the structure in the shaft feeder of this invention. It is a figure (partial enlarged view) which shows an example of the structure in the shaft feeder of this invention. It is a figure (front view) which shows an example of a structure in the shaft feeder of this invention. It is a figure (top view) which shows an example of the structure in the shaft feeder of this invention. It is explanatory drawing about the operation | movement which feeds the shaft in the shaft feeder of this invention.

Explanation of symbols

1a, 1b, 1c Movable protrusion plate 11a, 11b, 11c Movable holding surface 2a, 2b, 2c Fixed holding plate 21a, 21b, 21c Fixed holding surface 3 Air cylinder 4 Storage part 5 Discharge part 51 Rack 52 Pinion 53 Pulley,
100, 100a, 100b, 100c, 100d shaft

Claims (8)

A shaft feeder comprising a thrusting means, a driving means, a holding means, a storing means, and a discharging means,
The protrusion means is a plate-like body that is movably supported in the vertical direction, and the upper end of the protrusion means is a movable holding surface that holds the shaft with a low inclined surface on the supply destination side of the shaft,
The drive means reciprocates the protrusion means in the vertical direction,
The holding means is a plate-like body provided along the protrusion means, and the upper end of the holding means is a fixed holding surface that holds the shaft with a low inclined surface on the supply destination side of the shaft,
The storage means stores the shaft and supplies the shaft to the movable holding surface;
The discharge means corrects one end of the shaft fed to the fixed holding surface to be in a predetermined position and holds the shaft in the discharge position,
When the movable holding surface and the fixed holding surface are flush with each other in the vicinity of the top dead center in the vertical reciprocation of the protrusion means, the shaft held by the movable holding surface rolls to the fixed holding surface. A shaft feeder characterized by being fed and held in place. 2. The shaft feeder according to claim 1, wherein the discharge unit is a plate-like body superposed on the holding unit, and an upper end of the plate-like body has a high inclined surface on a shaft destination side. The surface is paired with the inclined surface of the fixed holding surface to form a trough having a V-shaped cross section, and a pulley having a trough having the same cross section is provided on the extension of the trough. The shaft held by the trough of the body and the trough of the pulley moves along the trough as the pulley rotates, and one end of the shaft abuts against a stopper provided at the destination The shaft feeder is corrected so as to be in a predetermined position by the above. 3. The shaft feeder according to claim 2, wherein the pulley is rotationally driven by the driving unit via a transmission unit that converts the reciprocating motion of the driving unit into rotation and transmits the rotation to the rotation shaft of the pulley. Shaft feeder. 4. The shaft feeder according to claim 2, wherein a surface material that allows the shaft to slide is used for the valley portion of the plate-like body, and a surface material that prevents the shaft from slipping is used for the valley portion of the pulley. A shaft feeder characterized by that. The shaft feeder according to any one of claims 1 to 4, wherein the protrusion means includes three protrusion means of a first protrusion means, a second protrusion means, and a third protrusion means, and the holding means. The means comprises three holding means, a first holding means, a second holding means and a third holding means,
The movable holding surface of the first protruding means and the fixed holding surface of the first holding means are flush with each other near the top dead center in the vertical reciprocation of the first protruding means, and the movable holding surface holds the first holding means. The shaft that is rolled and fed to the fixed holding surface is held,
The movable holding surface of the second protruding means and the fixed holding surface of the first holding means are flush with each other near the bottom dead center in the vertical reciprocation of the second protruding means, and the fixed holding surface holds The shaft that is rolled and fed to the movable holding surface is held,
The movable holding surface of the second protruding means and the fixed holding surface of the second holding means are flush with each other near the top dead center in the vertical reciprocation of the second protruding means, and the movable holding surface holds the second holding means. The shaft that is rolled and fed to the fixed holding surface is held,
The movable holding surface of the third protruding means and the fixed holding surface of the second holding means are flush with each other near the bottom dead center in the vertical reciprocation of the third protruding means, and the fixed holding surface holds the same. The shaft that is rolled and fed to the movable holding surface is held,
The movable holding surface of the third protruding means and the fixed holding surface of the third holding means are flush with each other near the top dead center in the vertical reciprocation of the third protruding means, and the movable holding surface holds the movable holding surface. The shaft that is rolled and fed to the fixed holding surface is held,
The shaft feeder is characterized in that the discharge means holds the shaft fed to the fixed holding surface of the third holding means at the discharge position. 6. The shaft feeder according to claim 1, wherein an inclination angle between the movable holding surface and the fixed holding surface which are the inclined surfaces is in a range of 40 degrees to 50 degrees with respect to a vertical plane. Shaft feeder. The shaft feeder according to any one of claims 1 to 6, wherein a plate thickness of the protruding means and the holding means, which are the plate-like bodies, is larger than the diameter of the shaft and smaller than 1.35 times the diameter of the shaft. A shaft feeder characterized by 8. The shaft feeder according to claim 1, wherein the storage means includes at least a front side surface, a rear side surface, a left side surface, and a right side surface, and at least a part of the front side surface is the plate-like body. And the rear side surface is an inclined surface having a low front side, and either the left side surface or the right side surface is a vertical surface and the other is the vertical surface. A shaft feeder characterized in that the surface side is a low inclined surface.

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