JP3364791B2 - Feeding device for shaft parts - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention holds a shaft-shaped component on the tip end surface of a feed rod that moves forward and backward to advance, releases the shaft-shaped component at a desired position, and transfers the shaft-shaped component. The outlet hole of the component supply pipe is opened in the vicinity of the tip of the supply rod, and the component transfer from the outlet hole to the tip surface of the supply rod is performed by the attractive force of the magnet.

[0002]

2. Description of the Related Art An outlet hole of a component supply pipe for holding a shaft-shaped component on the tip surface of a supply rod for advancing and retracting and advancing, releasing the retention of the shaft-shaped component at a target position, and transferring the shaft-shaped component. Is opened near the tip of the supply rod, and the type in which parts are transferred from the outlet hole to the tip surface of the supply rod by the attractive force of the magnet is disclosed in the application document of Japanese Patent Application No. 3-201572. .

[0003]

With the above-mentioned structure, the distance from the outlet hole to the tip surface of the supply rod is long, which makes it difficult to quickly move the shaft-shaped component.
Similarly, if this distance is long, the position of holding the parts by the supply rod may shift, and the parts may not be normally supplied to the target location.

[0004]

[Means for Solving the Problem and Its Action] The present invention was devised by paying attention to the above-mentioned problems.
In the invention, the shaft-shaped part is held and advanced on the tip surface of the supply rod that moves forward and backward, the shaft-shaped part is released from the holding position at the target position, and the outlet hole of the part supply pipe for transferring the shaft-shaped part is formed. In the type that is opened in the vicinity of the tip of the supply rod and parts are moved from the outlet hole to the tip surface of the supply rod by the attractive force of the magnet, the shaft-shaped part has a protrusion for welding.
That consists flange and the shank, installing a retaining piece having a restricting surface in a state of open and close in forward and backward movement of said outlet aperture, the outlet
Position the hole as close to the supply rod as possible and
Accordingly, the restriction surface of the holding piece is adjusted to the stroke axis of the supply rod.
The regulating surface is formed so that a part of the flange of the shaft-shaped component is located on the supply rod advancing side of the tip face when the shaft-shaped component is temporarily locked by the holding piece. It is characterized by being. Therefore, the temporarily locked shaft-shaped component is brought as close to the tip surface of the supply rod as possible by the restriction surface of the holding piece. As a result, when the holding piece is retracted, the shaft-like part can be moved over a short distance. According to the invention of claim 2, a shaft-shaped component is held and advanced on the tip end surface of the supply rod that moves forward and backward, the shaft-shaped component is released from the target position, and the shaft-shaped component is transferred. In the type in which the outlet hole is opened near the tip of the supply rod and the component transfer from the outlet hole to the tip surface of the supply rod is performed by the attractive force of the magnet, the shaft-shaped component is a flange and a shaft with welding projections.
A holding piece having a restriction surface,
Install it in the state of opening and closing by advancing and retreating motion, and make the exit hole
Placed closer to the supply rod and held accordingly
Bring the regulating surface of one side toward the stroke axis of the supply rod
However , the regulating surface is formed so that a part of the flange of the shaft-shaped component is located on the supply rod advancing side of the tip face when the shaft-shaped component is temporarily locked by the holding piece. A recess for receiving the shaft-shaped component is formed at the tip of the stopper piece formed by
Accept the product in a state where it fits perfectly with the outer peripheral surface of the shaft.
The feature is that it has an arc surface shape to fulfill the purpose . Therefore, the shaft-like component moves quickly with a short transition distance, and further, the support of the concave portion serves to hold the tip of the supply rod in a stable manner, thereby improving the operational reliability. Claim
According to a third aspect of the invention, in the first or second aspect, the component supply pipe is arranged in a state of being along the stroke direction of the supply rod. The transition from the tube to the feed rod becomes even smoother. The invention of claim 4 is the invention of claim 3
In component supply tube characterized in that arranged in the stroke direction at an acute angle orientation of the feed rod, wherein
An effect similar to that of Item 3 is obtained.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Explaining the embodiments shown in FIGS. 1 to 6, the shaft-like parts here are a long projection bolt 1 made of iron and a flange 3 having a projection 2 for welding. It consists of a shaft 4. The feed rod 5 that makes an advance / retreat stroke has a front end surface 6 (indicated by reference numeral 6 in FIG. 2) for receiving the close contact with the flange 3, and an arc-shaped stopper piece 7 as shown in FIG. Is formed. A recess 8 is formed at the center of the tip of the stopper piece 7, and the shaft 4 is received therein as described later. The supply rod 5 is inclined with respect to the vertical line. In the bolt 1, the diameter of the flange 3 is 17 mm, and the diameter and length of the shaft portion are 7 mm and 40 m, respectively.
m.

A magnet (permanent magnet) 9 is embedded near the tip surface 6 of the supply rod 5, and the flange 3 of the bolt is adsorbed and held on the tip surface 6. The flange 3 is received by the stopper piece 7 in the state where it is held as shown by the chain double-dashed line in FIGS. 1 and 2. Furthermore, the tip end surface 6 is inclined so that the bolt 1 faces downward with respect to an imaginary plane that is perpendicular to the axis of the supply rod 5. The supply rod 5 is housed in the outer cylinder 10, and the piston rod 12 of the air cylinder 11 coupled to the end of the outer cylinder 10 is connected to the supply rod 5.

Another magnet (permanent magnet) 13 is provided to assist the entry of the bolt 1. The magnet 13 is housed in a holding container 14 and covered with a cover plate 15, and the holding container 14 is fixed to the lower end of the outer cylinder 10. It is fixed by welding here. The magnet 13 may be replaced with an electromagnet.

In this embodiment, the bolt 1 is attached to the steel plate 16
1 is inserted into the hole 17 of the hollow guide pin, and therefore, when the supply rod 5 advances to the position shown by the chain double-dashed line in FIG. 1 and stops, the whole device will be described later. Then, the attraction force of the magnet 9 must be eliminated and the bolt 1 must be dropped and inserted. Therefore, the supply rod 5 has a hollow shaft 18
And an inner shaft 19 slidably inserted inside thereof, and a regulation pin 20 fixed near the upper end of the inner shaft 19.
Passes through an elongated hole 21 formed in the hollow shaft 18 in the stroke direction and projects as shown in the drawing. An air cylinder 22 is fixed to the outer surface of the outer cylinder 10, and an engagement piece 24 is connected to a piston rod 23 of the air cylinder 22. The engagement piece 24 is extended from a long hole 25 formed in the outer cylinder 10 in the stroke direction. Outer cylinder 1
It projects into 0. The tension of the compression coil spring 26 inserted in the hollow shaft 18 acts on the inner shaft 19, whereby the restriction pin 20 abuts the lower side of the elongated hole 21, and in this state, the end faces of the hollow shaft 18 and the inner shaft 19 are aligned. The front surface 6 is formed by forming a flat surface (see FIG. 2).

The hollow shaft 18 and the inner shaft 19 are made of stainless steel which is a non-magnetic material so that sliding of both shafts does not become heavy due to magnetic attraction. Although an example in which the magnet 9 is made a permanent magnet is shown, the supply rod 5 is stopped and a single shaft made of iron is made to penetrate into the exciting coil to impart an attractive magnetic force to the tip of the single shaft. It is also possible to do so, and the bolt 1 can be released at a required position by cutting off the power supply to the exciting coil. The exciting coil 27 is shown in FIG.

Component supply pipe 28 guiding the bolt 1
The supply pipe (hereinafter referred to simply as “supply pipe”) is installed in a direction intersecting with the stroke direction of the supply rod 5 at an acute angle as shown in the drawing, and its end 29 is arranged near the tip of the supply rod 5. There is. A stopper member 30 is formed at the tip of the supply pipe 28 so as to close the pipe end. An outlet hole 31 is formed on the lower side of the end portion 29, that is, the front end portion side of the supply rod 5, and a holding piece 32 is installed in the portion so that the holding piece 32 can move forward and backward.
The shaft 1 of the bolt 1 that has descended 8 is locked between the inner surface 33 of the end 29 and the holding piece 32 as shown in the figure, and is in a so-called temporary locking positioning state. The inner surface 33 is curved as shown to allow the bolt 1 to fit into the outlet hole 3
It is designed to move toward 1.

The holding piece 32 has a regulating surface 3 which comes into contact with the shaft portion 4.
4 is formed, and the position at which the axial component 1 is temporarily locked is set by the installation position of the regulation surface 34. In order to shorten the transition distance of the projection bolt 1, the exit hole 31
Are arranged as close to the supply rod 5 as possible, and accordingly, the restricting surface 34 of the holding piece 32 is also arranged close to the stroke axis of the supply rod 5. By doing so, a part of the component, that is, a part of the flange 3 is positioned on the feed rod advancing side of the tip end surface 6.

The holding piece 32 is constructed so as to advance and retreat in the direction perpendicular to the paper surface of FIGS. A method of advancing and retracting the holding piece 32 is shown in FIG. 3, in which an air cylinder 36 is fixed to a bracket 35 connected to the outer cylinder 10 and a piston rod 37 of the air cylinder 36 is connected to the holding piece 32. In the illustrated embodiment, the inclination angle of the supply rod 5 with respect to the vertical line is about 30 degrees, and the supply pipe 28
Is welded (see reference numeral 38) so as to be located above the outer cylinder 10.

The concave portion 8 formed in the stopper piece 7 has an arcuate surface shape as indicated by reference numeral 39 in order to receive the concave portion 8 in a state in which the outer peripheral surface of the shaft portion 4 of the bolt is closely matched. Therefore, since the flange 3 is firmly attracted to the tip end surface 6, and the shaft portion 4 is closely received by the arcuate surface 39 of the recessed portion 8, the holding stability of parts at the tip end portion of the supply rod is improved. is there.

A drive means 40 is provided for moving the entire apparatus, that is, the outer cylinder 10, the supply rod 5, the air cylinder 11, the supply pipe 28 and the like therein, toward the hole 17 of the mating member. There is. As this means, there are methods such as rack and pinion and screw shaft,
Here, the air cylinder 41 is adopted. The air cylinder 41 is firmly fixed to a stationary member 42, and its piston rod 43 is connected to a bracket 44 welded to the outer cylinder 10. The output of the air cylinder 41 causes the entire device to move up and down. The synthetic resin supply hose 45 connected to the supply pipe 28 extends from a parts feeder (not shown). Also, the outer cylinder 1
0 and the supply pipe 28 are also preferably made of a non-magnetic material such as stainless steel in order to exert a strong magnetic force on the bolt 1.

The operation of the bolt 1 will be described below.
Before being transferred, the holding piece 32 is advanced to close the outlet hole 31 with the restriction surface 34 thereof. The bolt 1 that has entered the supply pipe 28 from the supply hose changes its direction while the tip portion of the shaft portion 4 contacts the inner surface 33, and hits the stopper member 30. At that time, the attraction force of the magnets 9 and 13 acts on the bolt 1, particularly on the flange 3 and the shaft portion 4 in the vicinity thereof, so that the entire bolt 1 is received by the restricting surface 34 and temporarily shown in FIGS. The locking position is set. Next, the holding piece 3
When 2 is retracted by the air cylinder 36, the bolt 1 is rapidly moved to the side and is attracted to the tip surface 6, and at the same time, the shaft portion 4 is received in the recess 8.

Next, when the supply rod 5 advances and the bolt 1 held at its tip comes close to the hole 17, the supply rod 5 stops at the position shown by the chain double-dashed line, which is apparent from FIG. As described above, the shaft portion 4 and the hole 17 are concentric with each other, and then the air cylinder 41 is actuated to lower the entire apparatus, whereby the shaft portion 4 is inserted into the hole 17. Along with that, the locking piece 24 is pulled back by the air cylinder 22, so that the regulating pin 20 is also pulled back at the same time, and its displacement is transmitted to the magnet 9 via the inner shaft 19, and finally the magnet 9 is flanged. 3, so that the suction force on the flange 3 is substantially eliminated, and the bolt 1 has a hole 17
It falls inward. The concentric state and the insertion of the shaft portion 4 into the hole 17 are realized by the inclination of the tip end surface 6 described above. Since the method for realizing the above-described operation sequence can be easily implemented by the conventionally known sequence control, the description of the operation air control of the air cylinder or the like is omitted.

The embodiment of FIG. 7 is a case where the supply pipe 28 is parallel to the stroke direction of the supply rod 5.
In this case also, the operation is the same as in the previous embodiment. In the claims, the expression "the supply pipe is arranged along the stroke direction of the supply rod" collectively refers to both the parallel case and the acute angle case. Further, there is also a system in which the component supply pipe 28 is installed in a direction orthogonal to the stroke direction of the supply rod as shown by the two-dot chain line in FIG. 7, and the bolt 1 is transferred in a so-called hanging type inside the supply pipe. .

[0018]

According to the present invention, the position where the shaft-shaped part is temporarily locked in the supply pipe outlet hole, that is, a part of the shaft-shaped part is the part of the supply rod by the restriction surface of the holding piece and the attraction force of the magnet. Since it is located on the feed rod advancing side of the tip end surface, the transition distance from the temporary locking position to the feed rod tip end surface is shortened. Therefore, as described above, the component has a relatively large size and a large mass. Even if it is a magnet, the magnet attracting force is strong and acts on the parts, and the magnet rapidly moves to the tip surface of the supply rod. If such speed is not sufficient, the shaft-shaped component is moved to a position displaced by its gravity, which is inconvenient for accurate component supply.

At the tip of the supply rod, one end of the shaft-shaped component is held by the tip end surface and the other part is received by the recess of the stopper piece, so that the shaft-shaped component is held at two positions. Improves holding stability and prevents parts from slipping or dropping during operation. Further, since the stroke direction of the component supply pipe and the supply rod are in the above-mentioned "positioned" relative positional relationship, the component transition distance from the outlet hole of the component supply pipe to the tip surface of the supply rod is shortened. It is possible and very advantageous for a quick transition.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view in which a main part of FIG. 1 is enlarged.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG.

FIG. 4 is a sectional view taken along line (4)-(4) of FIG.

FIG. 5 is a front view showing a tip portion of a supply rod.

FIG. 6 is a view (6) of FIG.

FIG. 7 is a vertical cross-sectional side view showing another embodiment.

[Explanation of symbols]

5 Supply rod 6 Tip surface 1 Shaft-shaped parts 28 Parts supply pipe 31 exit hole 13, 9 magnet 34 Regulatory aspects 32 holding piece 7 Stopper piece 8 recess

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B23P 19/00-21/00 B25B 23/04

Claims (4)

(57) [Claims] 1. An outlet hole of a component supply pipe for holding and advancing a shaft-shaped component on the tip end surface of a supply rod that moves forward and backward, releasing the retention of the shaft-shaped component at a target location, and transferring the shaft-shaped component. There Yes it is opened in the vicinity of the tip of the feed rod, in component migration from the outlet holes to the feed rod end face of the type carried out by the suction force of the magnet, the shaft-like component is a projection for welding
A holding piece that is composed of a flange and a shaft portion that has, and has a restricting surface is installed in a state of opening and closing the outlet hole by advancing and retracting operation ,
Place the outlet hole as close to the supply rod as possible
Then, the control surface of the holding piece is
Repel toward the over click axis, furans shaft-like part when the regulating surface is the shaft-like parts are sealed one o'clock engaged by the holding pieces
A device for supplying a shaft-shaped component, wherein a part of the groove is formed so as to be located on the supply rod advancing side of the tip surface. 2. An outlet hole of a component supply pipe for holding and advancing a shaft-shaped component at a tip end surface of a supply rod for advancing and retracting, releasing the retention of the shaft-shaped component at a target location, and transferring the shaft-shaped component. There Yes it is opened in the vicinity of the tip of the feed rod, in component migration from the outlet holes to the feed rod end face of the type carried out by the suction force of the magnet, the shaft-like component is a projection for welding
A holding piece that is composed of a flange and a shaft portion that has, and has a restricting surface is installed in a state of opening and closing the outlet hole by advancing and retracting operation ,
Place the outlet hole as close to the supply rod as possible
Then, the control surface of the holding piece is
Repel toward the over click axis, furans shaft-like part when the regulating surface is the shaft-like parts are sealed one o'clock engaged by the holding pieces
It is formed such that a portion of the di is located on the supply rod advancing side of the distal end surface, moreover, form Then co recesses for receiving the shaft-like component to the distal end portion of the formed stopper to the feed rod
In addition, this recess fits snugly on the outer peripheral surface of the shaft of the shaft-shaped component.
In order to fulfill the acceptance in the finished state, it has an arc surface shape
A device for supplying a shaft-shaped component, characterized in that 3. A shaft-shaped component supply device according to claim 1 or 2, wherein the component supply pipe is arranged along the stroke direction of the supply rod. 4. A shaft-shaped component supply device according to claim 3, wherein the component supply pipe is arranged at an acute angle to the stroke direction of the supply rod.