JPH0413484A - Magnet type supply rod for shaftlike part - Google Patents

Abstract

PURPOSE:To surely position the shaftlike part by fitting guide pieces to restrict rotation of the shaftlike part on the tip of the shaftlike part supply rod whose tip is arranged with a magnet and setting the length thereof so as to perform a guide function. CONSTITUTION:A bolt 1 is made in a standby state on an end of a supply pipe 28 and when a holding piece 33 is retreated by an air cylinder 38, the bolt 1 is moved to the right side by attraction of the magnet 11 and advances between the guide pieces 9 and sticks fast to the tip face 7. The supply rod 6 then advances and the guide pieces 9 stop right before an iron plate part 5. A detention piece 26 is then brought back by an air cylinder 24 and the magnet 11 goes way, so the bolt 1 falls in a hole 14. At this time, since a flange of the bolt 1 is made in a sandwiched state from both sides by the guide pieces 9, the rotation of the bolt 1 itself is regulated and the guide function is performed till the belt 1 completely goes into the hole 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention relates to a magnetic supply rod for shaft-shaped parts, and is a method for supplying a shaft-shaped part to a mating part while keeping the rotating direction of the shaft-shaped part constant. suitable for cases.

(C1) Conventional technology The conventional technology is as shown in Fig. 10.
No. 267 (No. 11/10 in B23) ``Nut supply device for spot welding machine''. This is because the inclined supply rod consists of a hollow shaft 6 and an inner shaft 1 (1a), a magnet 2 is attached to the tip of the inch shaft, and an inner wall 3Ct- A nut holding hole 5 is provided so that the nut (N) is always kept in a horizontal position and fed to the mandrel 15a. The nut N is in close contact with the inner wall 6C within the holding hole 5 and its rotational direction is restricted, and is held by the suction force of the magnet 2, and is supplied from an inclined direction of about 45 degrees to 60 degrees as shown in the figure. It is matched with the mandrel 15a.

Problems to be Solved by the Invention In the conventional example described above, the shallow depth of the holding hole 5 is
Since the supply rod is held in a horizontal state by the ffi force and strokes are made with the supply rod tilted, when the dimension (thickness) in the upper f direction is small like a nut, the magnet 2 is moved after reaching the target location. If you move back, it will be possible to supply it successfully.

However, if the protruding length of the mandrel 15& is longer than a dog, the lower left corner of the nut will interfere with the tip of the mandrel when the nut (N) approaches from diagonally above. 10th
When the part is pol) B as shown by the two-dot chain line in the figure, it is necessary to provide a wide passage space, which is difficult to utilize in terms of space for the cylindrical part. Since the holding hole 5 has a very small depth, it has an extremely poor function of guiding the component when transferring to the other component.

2) Means for solving the problem of interlayer and its effect The present invention was provided to solve the above-mentioned problems.
In the case of a type in which a magnet for attracting components is arranged at the tip of the supply rod, a guide piece for fully restraining the rotation of the shaft-shaped component is attached to the tip of the rod along the length of the rod. The entire feature is that the component is set to perform a guide function at or just before the photon is supplied to the target location, and the shaft-like component is restrained from rotating by the guide piece while being transported to the target location, for example. It is fed into holes in the iron plate.

(E) Embodiments Hereinafter, the embodiments will be explained in detail according to the embodiments shown in the drawings. The shaft-shaped component in this embodiment is a bolt 1 as shown in FIG. 8, which consists of an oval-shaped flange 2 and a shaft portion 6, and the flange 2 is provided with a projection 4 for welding. Because the flange 2 has such a shape, the other steel plate part 5
As shown in Figure 9, the long axis direction of the oval shape is the same part 5.
Position the rotation direction so that it is parallel to the upper edge of the
It is necessary to prevent it from protruding from the upper edge.

The tip of the supply rod 6 is provided with four surfaces 7 that receive the flange 2 in close contact with each other, and a projection 8 for giving the bolt 1 an arc-like #movement trajectory as described later. Two guide pieces 9 are welded in parallel in a pair. This weld is designated by the reference numeral 10 (only shown in FIG. 4). A magnet (permanent magnet) 11 is embedded in the supply rod 6, and a cover plate 12 is attached. The supply rod 6 (including the hollow shaft machining inner shaft described later), the guide piece 9, the cover plate 12, etc. are made of stainless steel, which is a non-magnetic material. It has a strong magnetic attraction.

The bolt 1 is inserted into a hole 14 of a steel plate part 5 placed on a fixed electrode 16 for projection welding, and when the guide piece 9 stops just before the steel plate part 5, an attractive magnetic force is applied to the bolt 1W. is eliminated, the bolt 1 falls, and at this time, the flange 2 is formed on the inner surface of the protrusion 8.
The shaft 6 slides against the inner corner of the protrusion 8 and enters the hole 14 as shown by the two-dot chain line while moving in an arc as shown by the arrow 15. It sinks in.

In order to eliminate the attractive magnetic force of the magnet 11, the structure is such that the magnet 11 can move away from the seven lunges 2. That is, the supply rod 6 is composed of a middle shaft 16 and an inner shaft 17 inserted into the inner shaft in a sliding groove, and the tip of the inner shaft 17 is embedded in a magnet N1, and the cover plate 12 is attached. . Further, a projection 8 is provided at the tip of the middle y-axis 16, and a guide piece 9 is welded as shown in FIG. Such a supply rod 6 is outside *18
Air cylinder 19C housed in a circle and connected to its upper side
) A piston rod 20 is connected to the hollow shaft 16.

The middle shaft 16 has a long hole 21 in the stroke direction)
A regulating pin 22 fixed to the inch shaft 17 projects through the elongated hole 21. A coil spring 2 is installed inside the hollow shaft 16.
6 is inserted, and its tension acts on the inch shaft 17, causing the regulation bottle 22 to hit the lower end of the elongated hole 21, and in this state, the cover plate 12 and the lower 4d of the hollow shaft 16
ji are located on the same plane to form a tip surface 7. An air cylinder 24 is fixed to the outer surface of the outer l118,
A locking piece 26 is coupled to the piston rod 25, and a long hole 27 in the stroke direction is formed in the n1 outer cylinder 18.
The long hole 27td protrudes into the outside*18. The relative positions of the two are set so that the regulating bottle 22 stops just in front of the retaining piece 26 when the supply roller moves forward by a predetermined length.

The component supply pipe 28, which is arranged at an acute angle with the stroke direction of the supply rod 6, is connected to the outer periphery 1 at the welded part 29.
8, the flange 2 is rounded to prevent rotation, and its cross section is rectangular as shown in FIG. The end portion 60 of the component supply pipe 28 is disposed near the tip of the supply rod 6, and the stopper portion 61 is placed in a state where the pipe is closed.
is formed. The end s60 has an outlet hole 52 facing the guide piece 9, and the holding piece 35 is installed in that part so that it can move forward and backward). Axis s6 is skin! +60 inner surface 34 and holding piece 3
As shown in the figure, it is locked at a narrow place between the two positions, and is in a so-called - time locked positioning state. The inner surface 64 of the end portion 50 is provided with a thick portion 65 and an inclined surface 66.
It has a cross-sectional shape suitable for smoothly guiding the shaft portion 6 and accommodating the portion 5 as shown in FIG.

Holding piece 55? The method for moving the air cylinder 31u forward and backward is shown in FIG.
! [The piston/rod 69 is connected to the holding piece 66.] Note that a rectangular cross-section O hose 40 extending from a parts feeder (not shown) is connected to the supply pipe 28.

The operation will be explained below. In FIG. 1, the bolt 1 is in a standby state at the end of the supply pipe 280, and when the holding piece 66 is retracted by the air cylinder 68,
The bolt 1 is moved to the right in FIG. 1 by the attraction force of the magnet 11, and at the same time, the 7 langes 2 enter between the guide pieces 9 and the flanges come into close contact with the front surface 7. In this state, the inner corner of the protrusion 8 just contacts the shaft 3, or a very small gap remains. When the supply rod 6 moves forward with the pawl and the guide piece 9 stops just in front of the steel plate part 5 as shown by the two-dot chain line in FIG. 1, the stop piece 26 is pulled back by the air cylinder 24 at the same time. Therefore, the regulating pin 22 is also pulled back at the same time, and its displacement is transmitted to the magnet 11 via the inch shaft 17, and eventually the magnet 11 moves away from the flange 2, so that the attractive force against the flange 2 is substantially eliminated. Bolt 1 is hole 1
It drops to within 4.

At this time, the oval-shaped flange 2 is sandwiched from both sides by the guide piece 9, so the bolt 1
Its rotation is restricted and the guide function continues until the bolt 1 is completely inserted into the hole 14. In the illustrated example, the guide piece 9 has extended to just before the steel plate part 5, but even if it is stopped a little earlier and the guide piece 9 does not perform the guide function at the end of the bolt 1's advance, the direction of rotation will change. There is no particular effect on the settings.

In addition, in order to make the bolt transition from the supply pipe 28 to the supply rod 6 side stronger, the magnet (permanent magnet) 41 may be provided separately as shown in the double-point chain diagram in FIG. . Furthermore, the magnet 11, which is made of a permanent magnet, can be converted to an electromagnetic system by using a single solid shaft made of iron as the supply iron having a dual structure inside and outside, and passing this shaft through the excitation coil. Similarly, it is possible to convert the magnet 41 into an electromagnet.

In the above embodiments, the bolt 1 moves from the supply pipe 28 to the supply rod 6 side, but in the embodiments shown in FIGS. 6 and 7, the bolt 1 moves from the inclined guide rail 42. 1 is supplied. The guide rail 42 has two rails arranged parallel to each other as shown in Figure 7, and the bolt 1 is locked in a σ-like manner to the rails so that the guide rail 42 slides down. A protrusion 46 is provided on at least one side of the rail in order to contact the flange 2 and prevent rotation. Note that the supply rod 6 is exactly the same as that described above.

(F) Effect According to the present invention, the guide piece for restraining the rotation of the component is attached in the longitudinal direction of the supply rod, and its length is also set to a sufficient value. Typically, when supplied to a hole in a steel plate part, the guide piece provides a guide function to prevent rotation over a distance corresponding to the length of the shaft-like part or a distance 4 near 7"LVC. will be fulfilled.

Therefore, the shaft-like component does not rotate during the transition period from the supply rod to the destination location, and positioning as shown in FIG. 9 can be performed in one go.

[Brief explanation of the drawing]

Figures 1 to 9 show examples of the present invention; Figure 1 is a vertical side view, Figure 2 is a sectional view taken along line (2)-(2) of Figure 1, and Figure 3 is a cross-sectional view of Figure 1. (3) - (3) Cross-sectional view, Figure 4 is a three-dimensional view, Figure 5 is a front view, Figure 6 is a side view, Figure 7 is a longitudinal front view, Figure 8 is a three-dimensional view, and Figure 9 is a three-dimensional view. FIG. FIG. 10 is a longitudinal sectional side view of a conventional example. 6... Supply rod, 11... Magnet, 1...
Shaft-shaped component, 9... guide piece.

Claims (1)

[Claims] In a type in which a magnet for attracting components is placed at the tip of the supply rod, a guide piece is attached to the tip of the rod in the longitudinal direction of the rod to restrain the rotation of the shaft-shaped component, and the length of the guide piece is A magnetic supply rod for shaft-shaped parts, characterized in that it is set to perform a guiding function until the supply of parts to a target location is completed or just before that.