JPH0796409B2 - Parts supply device with inclined supply rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a supply device for a shaft-shaped component with a head member such as a bolt and a component such as a nut, and particularly to a supply rod means from a supply pipe. And the state of holding the parts at the tip of the supply rod is improved.

(B) Conventional technology As a method of holding a shaft-shaped part such as a bolt or other parts such as a nut at the tip of the supply rod and supplying it to a desired place, there is a system in which a check mechanism is installed in the supply rod. is there. Further, as a method of guiding a shaft-shaped component or the like to the tip of the supply rod, there is known a method of providing a guide shutter in a direction orthogonal to the supply rod and moving the shaft-shaped component or the like along the shutter. In addition, real public Sho 52-
Japanese Patent No. 44267 discloses that a part is held at the tip of an inclined feed rod so that its axis is in a vertical state, and a nut is placed on a pusher and moved to the tip of the feed rod.

(C) Problems to be solved by the invention With the check mechanism as described above, if the check mechanism itself is a little misaligned, the supply rod has advanced because the shaft-like parts are not held in the correct posture. At this time, the tip of the shaft-shaped component may interfere with other members, and the component may inadvertently fall off. This occurs when the chuck's own nails do not pair with the correct accuracy.

In addition, if the above-mentioned guide computer is installed, it is necessary to provide a large space for arranging the computer, and it may not be possible to use it in a narrow space.

And, the most important issue is to minimize the swing displacement of the axis of the component when the shaft-shaped component leaves the supply rod and enters the hole of the counterpart member. In the transitional period of such intrusion, it is ideal that the shaft-shaped parts shift vertically, and even if this is not the case, hold the parts in the supply rod so that the axis of the parts is as close to the vertical state as possible. Is advantageous.

Finally, in the case of the above-mentioned Japanese Utility Model Publication No. 52-44267, the nut is placed on the pusher and moved to the tip of the supply rod. Therefore, if some external force acts on the nut, the nut May fall from the pusher, and reliable operation may not be obtained.

(D) Means for Solving the Problem and Its Action The present invention is provided to solve the above-described problems, and supplies the components by closely contacting them with the tip end surface of the inclined advancing and retracting type supply rod. In which the tip end surface is formed to be inclined with respect to an imaginary plane orthogonal to the axis of the supply rod, and the axis of the component that is in close contact with the tip end surface is perpendicular to the inclination angle of the supply rod. It is in a nearly inclined state or a vertical state, and the supply pipe of the component is installed in a direction that intersects the stroke direction of the supply rod at an acute angle,
The end of the supply pipe is provided with a release portion that opens toward the axis of the supply rod, close to the axis of the supply rod, and the vertical position of the release portion moves from the release portion toward the axis of the supply rod. It is characterized in that the parts that have been made to come into close contact with the tip end surface of the supply rod are set at a position where the parts that have descended at an acute angle with respect to the axis of the supply rod are delivered from the release portion immediately. When the component comes into close contact with the tip surface of the and the component moves from the supply rod to the opposite member, the component behaves as if it were in the vertical direction.

(E) Example First, the example of FIGS. 1 to 4 will be described. As the parts to which the present invention is applied, there are various shapes. A shaft-shaped component (hereinafter, simply referred to as a shaft-shaped component). The bolt 1 as shown comprises a flange-shaped head portion 2 and a shaft portion 3, and a normal supply rod 4 is exemplified as the supply rod means.

The leading end portion of the supply rod 4 that makes an advancing / retreating stroke is shaped as shown in FIG. 4, and at least a stopper piece 5 for receiving the head portion 2 that has moved is provided. In the case shown, wall members 6, 6 are provided on both sides in order to hold the head 2 more stably, and the head member 2 has a U-shaped frame shape having an opening 7. The supply pipe 8 which guides the shaft-shaped component 1 is installed in a direction intersecting with the stroke direction of the supply rod 4 at an acute angle as shown in the drawing, and the end portion 9 thereof is a tip portion of the supply rod.
It is arranged in the vicinity of 10. A stopper member 11 is formed at the tip of the supply pipe 8. The right side of the end portion 9, that is, the end portion 10 side of the supply rod 4 is formed as an open portion 12 as shown, and this release portion 12 is directed toward the axis 39 of the supply rod 4 and close to the axis 39. The bolt 1 that has been opened from the release portion 12 toward the axis 39
The head portion 2 is set at a position just in close contact with the tip surface 37 of the supply rod 4. The holding piece 13 is installed in such a manner that it can move back and forth across the release portion 12, and the head 1 of the bolt 1 descending the supply pipe 8 has a narrower space between the inner surface of the end 9 and the holding piece 13. It is locked at a position as shown in the drawing and is in a so-called temporary locking positioning state.

A method of advancing and retracting the holding piece 13 is shown in FIG. 2, and an air cylinder 17 is fixed to a bracket 16 connected to an outer cylinder 15 described later, and its piston rod 18 is connected to the holding piece 13.

The supply rod 4 is housed in the outer cylinder 15 and is moved forward and backward by the air cylinder 1 connected to the upper end of the outer cylinder 15. The piston rod 20 of the cylinder 19 is connected to the supply rod 4. is there. A magnet (permanent magnet) 21 is arranged outside the stopper piece 5 in order to shift the bolt 1 in the position shown in FIG. 1 to the supply rod 4 side.
The supply rod 4 advances and the bolt 1 moves into the hole 23 of the mating member 22.
When approaching, the attraction force for the bolt 1 must be extinguished. For that reason, the magnet 21 has a mechanism capable of retracting.

That is, the magnet 21 is mounted in a state of being embedded in the sliding piece 24, and the sliding piece 24 moves upward with respect to the supply rod 4, whereby the magnet 21 is separated from the stopper piece 5. The suction holding force on the head 2 is substantially eliminated. In order to give such a behavior, the supply rod 4 comprises a hollow shaft 25 and an inner shaft 26 slidably inserted in the hollow shaft 25, and the sliding piece 24 has a fixing bolt 27.
It is fixed to the inner shaft 26 via. The fixing bolt 27 penetrates the hollow shaft 25 through a long hole 28 opened in the stroke direction.

A long hole 29 is formed in the hollow shaft 25 in the stroke direction, and a restriction pin 30 fixed to the inner shaft 26 projects as shown in the figure. A coil spring 31 is housed in the hollow shaft 25, and the restriction pin 30 abuts the lower end of the elongated hole 29 by its tension. An air cylinder 32 is fixed to a lower side surface of the outer cylinder 15, and a locking piece 34 is attached to a piston rod 33 thereof.
A locking piece 34 penetrates an elongated hole 35 formed in the outer cylinder 15 in the stroke direction and projects into the outer cylinder 15. The relative position of the supply rod 4 is set so that when the supply rod 4 advances a predetermined stroke, the regulating pin 30 comes to the position immediately before the locking piece 34.

The supply pipe 8 and the outer cylinder 15 are welded (reference numeral 36 is a welded portion) in an acute positional relationship as shown in FIG. Although not shown, another magnet (permanent magnet) may be installed at the tip of the inner shaft 26 to further enhance the bolt attraction to the tip portion 10 of the supply rod. It is also possible to assemble an electromagnet instead of the magnet. A supply hose 38 is connected to the supply pipe 8.

The upper surface of the head 2 is in close contact with the tip surface 37 of the supply rod 4, and the tip surface 37 is inclined with respect to an imaginary plane 40 (see FIG. 5) orthogonal to the axis 39 of the supply rod 4. ,
The tilt angle is represented by the symbol a. By imparting such an inclination angle to the front end surface 37, the axis 41 of the component that is in close contact with the front end surface 37 is in a nearly vertical inclination state. The axis 41 can be made vertical depending on the selection of the inclination angle a. The component 42 in FIG. 5 is a projection nut with a welding projection. In addition, in FIG. 1, since the shaft portion 3 is in a vertical relationship with the flange-shaped head portion 2, the inclination angle a is shown in the portion of the drawing. Further, FIG. 5 shows that a steel plate component 44 is placed on the fixed electrode 43 for spot welding, and the guide pin of the electrode 43 is mounted.
It matches the projection nut 42 to 45. Further, in order to prevent the inertial rocking of the bolt 1, the restricting projection 46 as shown in FIG. 1 may be bent as necessary. The projection 46 is not shown in FIG.

The bolt 1 descends in the supply pipe 8 as shown by the chain double-dashed line, the shaft portion 3 hits the stopper member 11, and the head portion 2 thereof catches between the inner surface of the end portion 9 and the holding piece 13. Then, the bolt 1 is temporarily locked as shown by the solid line. This temporary locking causes the predetermined positioning, and the holding piece 13
When the bolt retreats, the bolt 1
Moves to the right, the head 2 is received by the stopper piece 5, and the head 2 comes into close contact with the tip surface 37.
The transition to the side ends. Next, when the supply rod 4 moves forward and the bolt 1 held at the tip thereof comes close to the hole 23, the supply rod 4 stops, and in tandem with it, the locking piece.
Since 34 is pulled up by the air cylinder 32, the regulation pin 30 is also pulled up at the same time, and its displacement is the inner shaft 26 and the fixing bolt.
27, it is transmitted to the magnet 21 via the sliding piece 24, and finally the magnet 21 moves away from the head 2, so that the suction force on the head 2 practically disappears, and the bolt becomes a hole from its tip.
It drops into 23.

(F) Effect According to the present invention, since the parts are brought into close contact with the tip surface of the supply rod, the relative positions of the supply rod and the parts are always made uniform, and the check mechanism as described in the prior art is provided. The problem in is surely avoided.

The most important effect is that since the inclination angle a is given, when the component is stopped in the immediate vicinity of the mating member, the axis of the component can be in an inclined state close to vertical or in a vertical state. In this case, it is possible to reduce the turning angle when the component makes a drop transition, and in the latter case, this turning angle can be set to zero. Therefore, when the component is dropped and transferred, the component can be accurately supplied to the counterpart hole, the guide pin, etc., and the reliability in mass production is significantly improved. Further, the supply pipe of the component is installed in a direction intersecting with the stroke direction of the supply rod at an acute angle, and the release portion opening toward the axis of the supply rod is provided at the end of the supply pipe. It is installed close to the axis,
The vertical position is set to the position where the parts moved from the released part toward the axis of the supply rod are in close contact with the tip surface of the supply rod, so the parts stopped at the end of the supply pipe remain as they are. If it moves to the side of the axis, the tip of the supply rod is brought into close contact with the supply rod, the transfer of the component to the supply rod is ensured, and the problem of falling as in the prior art can be solved.

[Brief description of drawings]

1 is a vertical sectional side view, FIG. 2 is a sectional view taken along line (2)-(2) of FIG. 1, and FIG. 3 is taken along line (3)-(3) of FIG. ) A sectional view, FIG. 4 is a three-dimensional view, and FIG. 5 is a side view. 4 ... Supply rod, 37 ... Tip surface, 1, 42 ... Parts, 39 ...
... axis of supply rod, 40 ... virtual plane, a ... tilt angle,
41 …… part axis, 8 …… part supply pipe, 9 …… end, 12
…… The release part.

Claims (1)

[Claims] 1. A supply rod in which parts are closely attached to the tip end surface of an inclined forward / backward feed rod, wherein the tip end surface is formed to be inclined with respect to an imaginary plane orthogonal to the axis of the feed rod. , The axis of the component that is in close contact with the tip surface is in a tilted state that is closer to the vertical than the tilt angle of the supply rod, or is in a vertical state, and the supply pipe of the component is at an acute angle with respect to the stroke direction of the supply rod. A release part is installed at the end of the supply pipe, which opens in the direction of the axis of the supply rod, and is installed close to the axis of the supply rod.The upper and lower positions of the release part are supplied from the release part. A component supply device using a tilted supply rod, wherein the component transferred to the axial line of the rod is set at a position where it is in close contact with the tip surface of the supply rod.