JP7350234B2 - Parts conveyance path structure - Google Patents

Description

The present invention relates to a component conveyance passage structure for conveying a shaft-shaped component such as a projection bolt having a flange and a shaft portion by air injection.

The passage structure described in Japanese Unexamined Patent Publication No. 2-56305 is for transporting a flanged shaft-shaped component in a suspended state. A shaft passage portion is formed in communication with the shaft passage portion. This passage member opens near the tip of the supply rod, which is the supply point of the shaft-shaped component.

Japanese Patent Application Publication No. 2-56305

In a device that conveys a shaft-like component by injecting conveyance air into a passage member, the flange passage part of the passage member that opens toward the tip of the supply rod communicates with the outside via the shaft passage part. There is a problem in that the conveying air leaks from the shaft passage part and the air conveying force for the shaft-shaped component cannot be ensured. Further, since the passage member facing the supply rod is usually made of metal, there is a problem in that it is difficult to curve or twist the passage member into a desired shape.

The present invention was provided in order to solve the above-mentioned problems, and makes it easier to process and mold a metal passage member that opens toward a target location, and also to apply conveying air pressure to a shaft-shaped component. The purpose is to ensure that it works.

The invention according to claim 1 is
A shaft-shaped component with an integrated circular flange and shaft is conveyed by air jet.
A first flange passage portion through which the flange passes and a first shaft passage portion through which the shaft portion passes are formed in a synthetic resin supply hose extending from a parts supply source,
A metal introduction pipe that is connected to the supply hose and supplies the shaft-shaped component to a target location such as a supply rod has a second flange passage part on the introduction pipe side that communicates with the first flange passage part, and a second flange passage part on the introduction pipe side that communicates with the first flange passage part. A second axis passage section on the introduction pipe side communicating with the first axis passage section is formed,
The second shaft passage part is formed in a manner that communicates the second flange passage part with the outside of the introduction pipe,
The length of the second shaft passing portion seen in the longitudinal direction of the shaft portion is shorter than the length of the shaft portion, so that the shaft portion protrudes from the second shaft passing portion,
The shaft part protruding from the second shaft passage part is surrounded by a cover member having a U-shaped cross section or an arc-shaped cross section attached to the introduction pipe, and the second flange passage part, the second shaft passage part, and the inside of the cover member are enclosed. The passage space formed by each space has a closed cross-sectional structure, and the cover member has a U-shaped cross section or an arc-shaped cross section. This is a component conveyance passage structure characterized in that the cross -sectional area of the shaft-shaped component passage formed by the first shaft passage portion and the first shaft passage portion is larger than that of the passage.
that's all

The metal introduction pipe is connected to a synthetic resin supply hose, and supplies the shaft-shaped component to a target location such as a supply rod. The first flange passage part on the supply hose side communicates with the second flange passage part on the introduction pipe side, and the first shaft passage part on the supply hose side communicates with the second shaft passage part on the introduction pipe side. are communicating. Therefore, the shaft-shaped component that has moved within the supply hose is continuously and smoothly transferred to the introduction pipe, and smooth transfer of the shaft-shaped component from the supply hose to the introduction pipe is ensured, resulting in good transfer.

Since the introduction pipe has a simple cross-sectional shape consisting of the second flange passage part and the second shaft passage part, it is easy to process and form a curved shape or twisted shape to the target part for supplying shaft-like parts, which is advantageous in terms of manufacturing. It is.

By attaching the cover member to the introduction tube, the conveyed air is prevented from escaping from the second shaft passage portion to the outside, and the component passage at the introduction tube has a closed cross-sectional structure. Since the second shaft passage part is formed in a manner that communicates the second flange passage part with the outside of the introduction pipe, the conveyed air that has entered the second flange passage part leaks from the second shaft passage part, but the cover member The closed cross-sectional structure created by the installation prevents leakage and dispersion of conveying air outside the component passage. Therefore, the pressure of the conveying air can be applied to the flange or shaft portion of the shaft-like component, and the shaft-like component can be reliably transported.

FIG. 2 is a cross-sectional view of the entire device and a cross-sectional view of each part. FIG. 3 is a side view showing an interference state between a supply passage member and a movable electrode. FIG. 7 is a side view in which interference between the supply passage member and the movable electrode is avoided.

Next, a form for implementing the component conveyance passage structure of the present invention will be described.

1 to 3 show embodiments of the invention.

This embodiment is a case where the component conveyance passage structure according to the present invention is applied to a shaft-shaped component supply device.

First, the shaft-shaped component will be explained.

There are various types of shaft-shaped parts, such as a general bolt with a hexagonal head and a projection bolt with a circular flange. Here, we are supplying the latter projection bolt. In the following description, a projection bolt may be simply expressed as a bolt.

As clearly shown in each figure, especially in FIGS. 1(C) and (F), the shaft-shaped component 1 is a projection bolt, and a shaft portion 3 with a male thread is integrally formed in the center of a circular flange 2. It is provided. The flange surface on the opposite side to the shaft portion 3 is a flat circular surface 4, and three welding protrusions 5 are provided at 120 degree intervals on the back surface.

The bolt 1 is made of iron, which is a magnetic material. The outer periphery of the flange 2 is indicated by the reference numeral 12, and in the illustrated case has a rounded shape over the entire periphery. Regarding the dimensions of each part of the projection bolt 1, the diameter and thickness of the flange 2 are 12 mm and 2.5 mm, respectively, and the length and diameter of the shaft part are 13 mm and 5 mm, respectively. Incidentally, the bolt is also designated with the reference numeral 1.

Next, the entire shaft-shaped component supply device will be explained.

The device here is a bolt feeder and is designated by the numeral 100. In the illustrated case, a steel plate component 9 is placed on a fixed electrode 8, and the shaft portion 3 is inserted into a pilot hole 10 of the steel plate component 9 and a receiving hole 11 of the fixed electrode 8. Further, although not shown, the shaft portion 3 may be inserted into an opening formed in the counterpart component. Therefore, the pilot hole 10, the receiving hole 11, the opening of the other component, etc. serve as insertion holes. This insertion hole is designated by the reference numeral 6, which collectively refers to the lower hole 10, the receiving hole 11, the opening of the other component, and the like. The insertion hole 6 is arranged in the vertical direction, and its axis is indicated as an insertion axis O1-O1.

Note that the reciprocating movable electrode 7 coaxially paired with the fixed electrode 8 will be described in the interference problem section described later.

The supply rod 13 that moves diagonally downward and back is housed in an outer cylinder 14 having a circular cross section, and the outer cylinder 14 is fixed to a stationary member 15 such as a machine frame of the apparatus 100. The supply rod 13 moves forward and backward by the forward and backward movement output of the air cylinder 16 coupled to the outer cylinder 14. This advance/retreat direction is such that the supply rod 13 advances obliquely downward and returns. Therefore, the central axis of the supply rod 13 is indicated as the forward and backward axis O2-O2. The advance/retreat axis O2-O2 intersects the vertical insertion axis O1-O1 in an inclined state. This crossing angle is a constant angle and does not change even if the supply rod 13 is rotated.

The cross-sectional shape of the supply rod 13 may be circular, but here it is an oval shape with flat surfaces 31 and 32 formed on the left and right sides, as shown in FIG. 1(E). In order to prevent the supply rod 13 from rotating within the outer cylinder 14, regulating pieces 33 and 34 welded to the inside of the outer cylinder 14 are in close contact with the flat surfaces 31 and 32.

The bolt 1 is transferred to the vicinity of the insertion hole 6 while being held at the tip of the supply rod 13. A mechanism for holding the bolt 1 on the supply rod 13 will be described later.

Next, the bolt conveyance structure will be explained.

Although various sources can be used as the parts supply source , the parts feeder 18 is used here. A "component conveyance passage structure" is adopted in which the bolts 1 stored in the parts feeder 18 are conveyed in a predetermined posture to the vicinity of the tip of the supply rod 13. Sending vibration is applied to the circular bowl 19 and the air is sent to the accelerating structure 20, where high-speed jet air is blown onto the bolt 1 from the jet pipe 21 and conveyed. A synthetic resin supply hose 22 made of urethane resin or the like is connected to the acceleration structure 20. As shown in FIG. 1(D), the supply hose 22 has a passage space with a T-shaped cross section formed by the first flange passage part 23 through which the flange 2 passes and the first shaft passage part 24, that is, a parts passage. It is formed. The conveying air blown into the passage space having a T-shaped cross section does not leak to the outside because the passage space has a closed cross-sectional structure.

The supply hose 22 has a length of 3 to 4 meters and is curved or twisted. An introduction pipe 25 made of stainless steel is welded to the outer cylinder 14 via a connecting piece 26, and a curved part 27 is formed. A second flange passage portion 28 formed in the introduction pipe 25 communicates with the first flange passage portion 23 . The second shaft passage portion 29 through which the shaft portion 3 passes is shaped like an open groove that communicates with the outside, and communicates with the first shaft passage portion 24 . In this way, the introduction pipe 25 has a shape in which a gap through which the shaft portion 3 passes, that is, a second shaft passage portion 29 is provided below the second flange passage portion 28 . This introduction pipe 25 is a supply passage member for the bolt 1. Note that instead of the coupling piece 26, the tip of the introduction tube 25 may be directly welded to the end of the outer cylinder 14.

This supply passage member is also designated by the reference numeral 25. When the bolt 1 passes through the curved portion 27 of the supply passage member 25, it is sent out into the advancing space 30 of the supply rod 13 from a direction substantially perpendicular to the advancing and retreating axis O2-O2.

A square frame-shaped joint member 34A is welded to the end of the introduction pipe 25, and when the end of the supply hose 22 is press-fitted into the joint member 34A , the first flange passing portion 23 on the supply hose 22 side is connected to the introduction pipe 25 side. The first shaft passage section 24 on the supply hose side 22 communicates with the second shaft passage section 29 on the introduction pipe 25 side. Since the curved portion 27 is provided, the outer tube 14 and the introduction tube 25 form a U-shape or a V-shape, as shown in FIG. 1(A).

The bolt 1 is conveyed at high speed by a powerful air jet. At such a high speed, it may be difficult to hold the tip of the supply rod 13, or the tip of the supply rod 13 may be damaged. In order to solve this problem, a stopping means for temporarily stopping the bolt 1 is employed. Various types of stopping means can be used, such as one that stops by attracting with a magnet, and one that stops by protruding a stopper member. Here, the latter method of the stopper member is used.

An air cylinder 35 is fixed to the upper surface of the introduction pipe 25, and its piston rod 36 projects into and retreats from the second flange passage section 28. If the bolt 1 is conveyed at high speed while protruding, it is caught by the piston rod 36 and temporarily stopped.

Once the bolt 1 has stopped, it is transported by the conveying air from the injection pipe 21. Here, since the conveying air diverges to the outside from the second shaft passage section 29 through which the shaft section 3 passes, the flange 2 This means that air pressure for the shaft portion 3 cannot be obtained. Therefore, the cover member 37 is attached to the introduction pipe 25, and the parts passage in the part of the introduction pipe 25 has a closed cross-section structure, so that the conveying air does not diverge from the second shaft passage part 29 to the outside of the parts passage. The component passage in the introduction tube 25 has a closed cross-sectional structure because the shaft portion 3 protrudes from the second shaft passage portion 29, and this protruding space is surrounded by the cover member 37. This means that the passage space formed by the second flange passage part 28, the second shaft passage part 29, and the space inside the cover member 37 has a closed cross-sectional structure. Then, the cover member 37 is inserted into the joint member 34A in a state where it is integrated with the introduction pipe 25 without a gap, and by doing so, the parts passage of the supply hose 22 and the parts passage formed in the metal part are connected. communicate with each other to form a component conveyance passage structure.

The cover member 37 has a U-shaped cross section, as shown in FIG. 1C, and has a curved shape that can match the curved portion 27 of the introduction tube 25. Various structures can be adopted to integrate the cover member 37 with the introduction pipe 25, but here, a plate-shaped fixing piece 38 welded to the cover member 37 is brought into close contact with the side surface of the introduction pipe 25, and a fixing bolt is attached. At 17, a fixing piece 38 is coupled to the introduction tube 25. As a cover structure other than this, it is also possible to attach a cover member having an arcuate cross section. Further, instead of the coupling structure using the fixing piece 38 or the fixing bolt 17, a tightening band surrounding the introduction pipe 25 and the cover member 37 may be used. The cover member 37 is processed and molded separately from the introduction tube 25 so as to match the curved shape of the introduction tube 25, and is assembled to the introduction tube 25.

By attaching the cover member 37 in this manner, the conveying air is prevented from escaping from the component passage in the introduction pipe 25 to the outside, and since the conveying air hits the outer circumferential portion 12 of the flange 2 and the shaft portion 3, the piston rod 36 When the bolt 1 is retracted, the bolt 1 is fed to the feed rod 13 at a moderate speed.

Next, a structure for holding the bolt at the tip of the supply rod will be explained.

A receiving recess 39 for the flange 2 is formed at the tip of the supply rod 13 . FIG. 2(B) is a diagram showing a state in which the receiving recess 39 is viewed from below. The receiving recess 39 is provided with a holding surface 40 in close contact with the surface 4 of the flange 2, an arcuate portion 41 that matches the outer circumference 12 of the flange 2, and an inlet passage portion 42 through which the flange 2 passes. The depth L1 of the receiving recess 39 when viewed in the direction of entry of the flange 2 is set to be approximately the same as or greater than the diameter of the flange 2. The flange 2 that has passed through the second flange passage section 28 slides through the entrance passage section 42 and enters the receiving recess 39, and stops when the flange 2 matches the circular arc section 41. The depth H of the receiving recess 39 as viewed approximately in the direction of the component axis O3-O3 is set to be slightly larger than the thickness of the flange 2.

FIG. 2 shows a state in which the supply rod 13 is not rotated about the forward and backward axis O2-O2. In this state, the component entry line O4-O4, which is the entry direction line of the flange 2, passes through the center of the receiving recess 39, and accordingly, the bolt 1 is inserted into the insertion hole 6 while drawing an arcuate trajectory. The center point A1 at this time is located on the component approach line O4-O4. The arc portion 41 extends 90 degrees on both sides of the component approach line O4-O4.

The suction means 44 has a structure that brings the surface 4 of the flange 2 into close contact with the holding surface 40 and eliminates the contact force with the holding surface 40 when the supply rod 13 advances to a predetermined position. The attraction means 44 can be of various types, such as an air suction type or an electromagnetic type, but in this case, it is a permanent magnet type, and the permanent magnet is also indicated by the reference numeral 44.

The supply rod 13 is a hollow shaft, into which an inner shaft 45 is slidably inserted. A recess is provided near the tip of the inner shaft 45, and a permanent magnet 44 is embedded therein. In order to protect the permanent magnet 44, a cover plate 46 is fixed to the end of the inner shaft 45 by welding or the like, and the surface of this cover plate 46 serves as the aforementioned holding surface 40.

1A and 1F show a state in which the inner shaft 45 is stopped at the most advanced position, and at this time, the receiving recess 39 is waiting for the flange 2 to enter, and the flange 2 enters into the receiving recess 39 from the second flange passage part 28 through the inlet passage part 42, matches the circular arc part 41, and stops. In this stopped state, the surface 4 of the flange 2 is in close contact with the holding surface 40 due to the attractive force of the permanent magnet 44. When the supply rod 13 advances to the vicinity of the insertion hole 6 by the operation of the air cylinder 16, the attractive force of the permanent magnet 44 is eliminated, and the lower end of the shaft portion 3 enters the insertion hole 6 while drawing an arcuate trajectory. go. Note that a permanent magnet 43 is installed to assist in attracting the flange 2 when it enters the receiving recess 39. This is housed in a container welded to the end of the outer cylinder 14 and is designed to strongly suck the flange 2 that is entering, thereby ensuring that the flange 2 reaches the arcuate portion 41.

In order to introduce and hold the bolt 1 at the tip of the supply rod 13, the above-mentioned receiving recess 39 is formed, but instead of the receiving recess 39, a simple flat surface is provided at the tip of the supply rod 13, A stopper member can also be formed to catch the flange 2 that has entered here.

Next, the structure of the magnet moving back and forth will be explained.

The suction force control of the suction means means the control of whether the bolt 1 is held at the tip of the supply rod or whether this holding is released. Therefore, as mentioned above, an air suction type, an electromagnetic type, etc. can be adopted. The permanent magnet system here is a mechanical system in which the permanent magnet 44 is brought closest to the bolt 1 to attract it, or is moved away from it to substantially eliminate the attraction force.

The permanent magnet 44 is spaced apart from the flange 2 to substantially eliminate the attraction force on the bolt 1. As a structure for this purpose, a thin bar is coupled to the permanent magnet 44 and the bar is moved back and forth to move the permanent magnet 44 away from the flange 2, or an air cylinder is coupled to the end of the inner shaft 45 to move the inner shaft 45 away from the flange 2. It is possible to adopt a device that advances or retreats. Here, the latter inner shaft advance/retract type is adopted.

As described above, the supply rod 13 has the inner shaft 45 inserted into the hollow tubular hollow shaft 13A in such a manner that it can move forward and backward, and the regulating pin 47 fitted into the inner shaft 45 extends over the length opened in the hollow shaft 13A. It projects into the outer cylinder 14 through the hole 48. A compression coil spring 49 is interposed between the upper end of the inner shaft 45 and the inner end surface of the hollow shaft 13A, and its tension acts in a direction to push out the inner shaft 45. This tension causes the regulating pin 47 to move into the elongated hole 48. It's on the bottom edge. In this state, the inner shaft 45 is placed at the foremost position, the above-mentioned receiving recess 39 is formed, and the flange 2 can be received.

An air cylinder 50, which is a driving means, is fixed to the outer surface of the outer cylinder 14, and an engagement piece 52 is connected to the piston rod 51 of the air cylinder 50. protrudes inside. The relative positions of the engaging piece 52 and the regulating pin 47 are set so that the regulating pin 47 can face the engaging piece 52 when the supply rod 13 moves a predetermined length of stroke.

Next, holding of the bolt shaft portion will be explained.

When the bolt 1 slides into the receiving recess 39 while the flange 2 moves inside the second flange passage part 28, the holding stability of the bolt 1 is ensured and the bolt 1 is securely held at the tip of the supply rod 13. There is a need to. The bolt 1 is transferred by the jet air or attracted by the permanent magnet 43, smoothly enters the receiving recess 39, and stops when the outer peripheral part 12 of the flange 2 matches the circular arc part 41. At this time, there is a possibility that the lower end portion of the shaft portion 3 may swing clockwise in FIG. 1(A) due to inertia force. If the speed at which the bolt 1 enters the receiving recess 39 is too fast, there is a problem in that the bolt 1 falls from the receiving recess 39.

In order to solve this problem, a holding member 55 that moves forward and backward is provided. The holding member 55 is formed of an elongated member having a substantially rectangular parallelepiped shape, and has a holding groove 56 into which the shaft portion 3 enters. The holding member 55 is made of stainless steel, for example. The holding groove 56 is open to the introduction tube 25 side so as to communicate with the second shaft passage part 29, and a receiving surface 57 for receiving the shaft part 3 is formed on the opposite side. It is desirable that the receiving surface 57 has an arcuate cross-section to which the shaft portion 3 fits snugly. Further, the width of the holding groove 56 is set to be slightly larger than the diameter of the shaft portion 3. The holding member 55 is arranged in the advancing space 30 of the supply rod 13. When the holding member 55 is present in the advancing space 30, the holding member 55 functions to receive the bolt 1, and the supply rod 13 cannot advance at this time.

Since it is necessary to retract the holding member 55 when the supply rod 13 advances, the holding member 55 is moved to the position indicated by the two-dot chain line, as shown in FIG. 1(B). This is operated by a forward/backward driving means 58 fixed to the introduction tube 25 or the stationary member 15. Here, an air cylinder is employed as the forward/backward driving means, and its piston rod 59 is connected to the holding member 55. FIG. 1(B) is a plan view seen from the direction (B) of FIG. 1(A).

The holding member 55 has two stopping positions: a standby position where the holding member 55 is stopped in the advancing space 30 of the supply rod 13, and a retracted position where the advancing space 30 of the supply rod 13 is secured by retracting the holding member 55. It is said that That is, the standby position is indicated by a solid line in FIG. 1A, and the retracted position is indicated by a two-dot chain line.

When the bolt 1 is conveyed and the flange 2 is received by the circular arc portion 41 of the receiving recess 39, the shaft portion 3, which has entered the holding groove 56, is received by the receiving surface 57 almost at the same time. Therefore, the bolt 1 is reliably held at the tip of the supply rod 1 without causing abnormal inertial displacement as described above. Thereafter, by the operation of the air cylinder 58, the holding member 55 is retracted to the position shown by the two-dot chain line, and the supply rod 13 can move forward.

Next, the rotation of the supply rod and the outer cylinder will be explained.

FIG. 2 is a side view of the bolt supply device 100 viewed from the side, and in this state, the introduction pipe 25, cover member 37, etc. interfere with the movable electrode 7, making the device unusable. Therefore, the outer cylinder 14 is rotated about the advance/retreat axis O2-O2 to avoid the above-mentioned interference. For this purpose, a straight outer cylinder 14 is attached to the stationary member 15 in a state where the position in the rotational direction can be adjusted. As a structure for adjusting the position of the outer cylinder 14 in the rotational direction, the outer cylinder 14 can be sandwiched between V-shaped blocks, or a tightening member that can be elastically displaced can be used. Here, it is the latter type of tightening member.

A stainless steel fastening member 60 is fixed to the stationary member 15. A tightening hole 61 through which the outer cylinder 14 passes is formed in the tightening member 60, and the tightening hole 61 communicates with the outside through a split groove 62. A tightening bolt 63 that acts to narrow the gap between the split grooves 62 is screwed into the tightening member 60.

When the tightening bolt 63 is loosened and the outer cylinder 14 is rotated to adjust the position, and then the tightening bolt 63 is tightened, the outer cylinder 14 is firmly tightened within the tightening hole 61, and the adjustment of the rotational position is completed. By such position adjustment, the interference state shown in FIG. 2 is avoided, and the non-interference state shown in FIG. 3 is established.

Next, the depth dimension of the receiving recess will be explained.

When the outer cylinder 14 is rotated, the receiving recess 39 is also rotated together. In order to avoid the introduction tube 25, cover member 37, etc. from interfering with neighboring members such as the movable electrode 7, the outer cylinder 14 is rotated and the introduction tube 25, cover member 37, etc. are also rotated together. When this rotation angle θ is 30 degrees, the center point A1 of the circular arc trajectory of the bolt 1 is located at a location displaced by 30 degrees from the component approach line O4-O4, as shown in FIG. 3(B). ing. Since there are sufficient arc-shaped portions on both sides of the center point A1, which is the lowest point, the depth L1 of the receiving recess 39 as seen in the direction of the component approach line O4-O4 is set to be sufficiently long. Therefore, the bolt 1 can be inserted into the insertion hole 6 by making the bolt 1 draw an accurate circular arc trajectory based on the center point A1.

As shown in FIG. 3(C), when the rotation angle θ is set to 60 degrees, for example, and the introduction tube 25, the cover member 37, etc. are to be shifted significantly, and the depth dimension of the receiving recess 39 is short L2. In some cases, the arc-shaped portions formed on both sides of the center point A1 will have a sufficient angular range on one side, but will have a reduced angular range on the other side. For this reason, the arcuate locus of the bolt 1 with the center point A1 as the lowest point may not be accurately drawn. In other words, the flange outer circumferential portion 12 on one side of the center point A1 matches the circular arc portion 41 with a sufficient angular range, but the flange outer circumferential portion 12 on the other side of the center point A1 matches the circular arc portion 41 with a small angular range. It will be in a state that only matches. Therefore, the retention of the flange 2 in the circular arc portion 41 within a small angular range becomes unstable, and the distal end of the shaft portion 3 causes deflection in the circular arc trajectory, which prevents the flange 2 from smoothly entering the insertion hole 6. arise.

Such an abnormal phenomenon is caused by the depth L2 of the receiving recess 39 being too small. However, it is necessary to set the diameter to be approximately the same as or larger than the diameter of the flange 2. With this setting, the bolt can be inserted in a stable arc trajectory even if the rotation angle θ becomes large.

When the supply rod 13 rotates, if an angle is given to the advance/retreat axis O2-O2 and the component axis O3-O3 of the bolt 1, a slight circular arc displacement of the bolt tip will occur as the supply rod rotates. However, since the inner diameter of the insertion hole 6 is set to be somewhat large, this arcuate displacement is absorbed. If there is no such absorption margin, the relative position of the bolt tip and the insertion hole 6 is finely adjusted by finely adjusting the position of the advance/retreat axis O2-O2. Note that, in general, the intersection angle between the advance/retreat axis O2-O2 of the supply rod 13 and the component axis O3-O3 of the bolt 1 is extremely small, and the intersecting relationship is almost a straight line, so there are few cases where the above-mentioned fine adjustment is performed.

Incidentally, instead of the various air cylinders described above, it is also possible to employ an electric motor that outputs forward and backward movement. It is also possible to replace the various permanent magnets mentioned above with electromagnets.

The parts feeder is of a type that vibrates a bowl, but it may also be of a type in which parts are attracted to a rotary plate using a magnet and sent out from a delivery pipe. The above-mentioned parts feeder 18 is of the type that vibrates the bowl 19, but instead of this, a type of the parts feeder 18 is of a type in which a magnet is attached to an upright rotary disk, and the parts that are attracted by the rotation of this disk are guided to the delivery path. can be taken as a thing.

The illustration of air supply and exhaust pipes to each air cylinder is omitted.

Operations such as the above-mentioned movement of the supply rod back and forth and air injection can be easily performed using commonly used control methods. A predetermined operation can be ensured by combining an air switching valve that operates with a signal from a control device or a sequence circuit, a sensor that emits a signal at a predetermined position of the air cylinder, and transmits it to the control device.

The effects of the embodiment described above are as follows.

The introduction pipe 25 made of metal is connected to the supply hose 22 made of synthetic resin, and supplies the bolt 1 to a target location such as the supply rod 13. The first flange passage part 23 on the supply hose 22 side communicates with the second flange passage part 28 on the introduction pipe 25 side, and the introduction pipe 25 communicates with the first shaft passage part 24 on the supply hose 22 side. The second shaft passage section 29 on the side is in communication. Therefore, the bolts 1 that have moved inside the supply hose 22 are smoothly and continuously transferred to the introduction pipe 25, ensuring smooth transfer of the bolts 1 from the supply hose 22 to the introduction pipe 25, and ensuring good transfer. It will be done.

Since the introduction pipe 25 has a simple cross-sectional shape consisting of the second flange passage part 28 and the second shaft passage part 29, it is easy to process and form a curved shape or a twisted shape to the target location for bolt supply, and it is easy to manufacture. It's advantageous.

By attaching the cover member 37 to the introduction tube 25, the conveyed air is prevented from escaping to the outside from the second shaft passage section 29, and the component passage at the introduction tube 25 has a closed cross-sectional structure. The second shaft passage section 29 is formed in such a manner that the second flange passage section 28 is communicated with the outside of the introduction pipe 25, so that the conveyed air that has entered the second flange passage section 28 leaks from the second shaft passage section 29. However, the closed cross-sectional structure formed by attaching the cover member 37 can prevent leakage and dispersion of the conveyed air. Therefore, the pressure of the conveying air can be applied to the flange 2 and shaft portion 3 of the bolt 1, and the bolt 1 can be reliably transferred.

Since the introduction tube 25 and the cover member 37 are processed and molded separately and then integrated, the shape required for the introduction tube 25 and the cover member 37 can be easily formed, which is advantageous in terms of manufacturing. be. It is extremely difficult to perform processing such as bending or twisting the introduction tube 25 and the cover member 37 after integrating them in advance, and this problem can be solved.

As described above, according to the component conveyance passage structure of the present invention, it is possible to easily process and mold the metal passage member that opens toward the target location, and to ensure that conveyance air pressure acts on the shaft-shaped component. , stable transportation of shaft-shaped parts is realized. Therefore, it can be used in a wide range of industrial fields, such as automobile body welding processes and sheet metal welding processes for home appliances.

1 Projection bolt, shaft-shaped part 2 Flange 3 Shaft part 4 Surface 6 Insertion hole 7 Movable electrode 8 Fixed electrode 10 Lower hole 11 Receiving hole 12 Outer circumferential part 13 Supply rod 13A Hollow shaft 14 Outer cylinder 22 Supply hose 23 First flange passage part 24 First shaft passage section 25 Introductory tube 28 Second flange passage section 29 Second shaft passage section 30 Advancement space 37 Cover member 39 Receiving recess 40 Holding surface 41 Arc section 42 Inlet passage section 44 Attraction means, permanent magnet 45 Inner shaft 55 Holding member 56 Holding groove 57 Reception surface 58 Advance/retract drive means, air cylinder 60 Tightening member 100 Bolt supply device O1-O1 Insertion axis O2-O2 Advance/retract axis O3-O3 Component axis O4-O4 Component approach line A1 Center point, lowest point L1 depth dimension

Claims (1)

A shaft-shaped component with an integrated circular flange and shaft is conveyed by air jet.
A first flange passage portion through which the flange passes and a first shaft passage portion through which the shaft portion passes are formed in a synthetic resin supply hose extending from a parts supply source,
A metal introduction pipe that is connected to the supply hose and supplies the shaft-shaped component to a target location such as a supply rod has a second flange passage part on the introduction pipe side that communicates with the first flange passage part, and a second flange passage part on the introduction pipe side that communicates with the first flange passage part. A second axis passage section on the introduction pipe side communicating with the first axis passage section is formed,
The second shaft passage part is formed in a manner that communicates the second flange passage part with the outside of the introduction pipe,
The length of the second shaft passing portion seen in the longitudinal direction of the shaft portion is shorter than the length of the shaft portion, so that the shaft portion protrudes from the second shaft passing portion,
The shaft part protruding from the second shaft passage part is surrounded by a cover member having a U-shaped cross section or an arc-shaped cross section attached to the introduction pipe, and the second flange passage part, the second shaft passage part, and the inside of the cover member are enclosed. The passage space formed by each space has a closed cross-sectional structure, and the cover member has a U-shaped cross section or an arc-shaped cross section. 1. A component conveyance passage structure, characterized in that the cross-sectional area is larger than the cross-sectional area of the shaft-shaped component passage formed by the first shaft passage portion and the first shaft passage portion .

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