JP3235023B2 - Stopper of the part supply pipe for shaft-shaped parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper for transferring a shaft-like component such as a projection bolt by a component supply pipe, and is employed at a pipe end of the component supply pipe.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 3-294121 entitled "Supplying device for shaft-like parts" is one of the most typical prior arts of this kind. The overall structure of the technology disclosed herein is as shown in FIG. 1, but a conventional structure corresponding to a main part of the present invention is shown in FIG. The shaft-like component 1 handled here is an iron projection bolt composed of a shaft portion 2 and a flange 3 integrated therewith.
In addition, the projections for welding protruding from the lower surface of the flange 3 are not shown. A stopper surface 6 is formed at the end 5 of the component supply pipe 4, and a stop position of the shaft-like component 1 having moved in the component supply pipe 4 is set when the shaft portion 2 contacts the stopper surface 6. A guide surface 8 is formed on the inner surface of the tube end 7. The guide surface 8 is a smooth curved surface delicately formed as shown in FIG. 9 in a longitudinal section, and an arc-shaped groove as shown in FIG. It is continuously changed so that it becomes narrower to a narrow groove-shaped portion. An outlet hole 9 for transferring the shaft-like component 1 substantially in the diameter direction of the component supply pipe 4 is provided at a pipe end 7 of the component supply pipe 4. The holding piece 10 is installed in order to maintain the stopping posture of the shaft-shaped component 1, and a member having a cross section as shown moves forward and backward in a direction perpendicular to the paper surface of FIG. The dimensions of the projection bolt 1 are
Has a length of 20 mm, a diameter of 5 mm, and a diameter of the flange 3 of 10 mm.

[0003]

With the above-described stopper, if the length of the shaft-like component is increased or decreased from that of FIG. 9, it is necessary to recreate the component supply pipe accordingly. In the case of the unit shown in FIG. 1, it is necessary to re-install the entire unit only by changing the length. This is not preferable because it causes an increase in equipment cost and a time loss in equipment change. Further, in the structure of FIG. 9, a portion where the production is unexpectedly troublesome is the guide surface. This surface must be curved with great care so that the tip of the shank does not get caught and guide the shaft part in the proper direction. Therefore, in solving the above-mentioned problems, it is necessary to take care not to recreate the guide surface one by one.

[0004]

[Means for Solving the Problems and Their Functions] The present invention has been provided to solve the problems described above.
An outlet hole provided with a stopper surface at an end of the component supply pipe for a shaft-like component and for transferring a shaft-like component to a pipe end of the component supply pipe substantially in a diameter direction of the component supply pipe. Wherein a stopper member having a stopper surface corresponding to the length of the shaft-like component is detachably attached to a pipe end of the component supply pipe. When the length of the shaft-like component changes, a stopper member corresponding to the length is attached to the end of the tube, and the position of the stopper surface is made to match the length.
A second aspect of the present invention is characterized in that, in the first aspect, the inner wall of the end portion of the component supply pipe is a guide surface according to the shape of the shaft-like component, and the stopper member is attached at a portion that does not affect the shape of the guide surface. Therefore, even when the stopper member is replaced, the guide surface having a delicate shape is used without being changed. Claim 3 is claim 2,
The tip of the supply rod for holding the shaft-like component and reaching the target position is positioned near the outlet hole of the shaft-like component, and the shaft-like component positioned by the stopper member is provided at the outlet. Immediately after passing through the hole, the component is held at the tip of the supply rod. Claim 4 relates to claim 3,
The longitudinal direction of the component supply pipe and the supply rod are in an acute positional relationship, the magnet for attracting the axial component toward the supply rod is arranged in a stationary state, and the component is temporarily locked on the supply rod. It is characterized in that means are provided, and by being at an acute relative position as described above, the moving distance of the shaft-shaped part is as short as possible,
The short distance is attracted by a stationary magnet, after which the tip of the supply rod is temporarily locked.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 5, and those having the same functions as the members and portions described in FIG. Detailed description is omitted. The end of the component supply pipe 4 is open, and the part corresponding to the end 5 shown in FIG. 9 is not provided. Instead, a stopper member 12 having a stopper surface 11 is detachably attached to the pipe end 7. The stopper member 12 in FIG. 1 is made to correspond to the length of the projection bolt 1 in FIG. 1, and if the shaft-like component 1 is longer than this,
4 and 5, which will be described later. The cross section of the stopper member 12 in FIG. 1 is L-shaped, and the upper surface inside the stopper member 11 is the stopper surface 11. Flat part 1 outside pipe end 7
3, the stopper member 12 is fixed to the tube end 7 by bolts 14 with the inner surface of the stopper member 12 brought into close contact therewith. In order to make the stopper member 12 detachable, a bolt 14 is employed as fixing means. By forming the flat portion 13 outside the tube end 7 and fixing the stopper member 12 as described above, the guide surface 8 is not affected.

When the projection bolt 1 shown in FIG. 1 becomes long due to the shape of the steel plate part of the other party, the stopper member 12 is replaced with one shown in FIG. The stopper member 12 forms a dent 15 which is opened on one side, and the bottom is a stopper surface 16. Therefore, the depth L1 of the depression 15 corresponds to the length of the shaft portion 2 extended. The mounting of the stopper member 12 is the same as that described above as shown in FIG. In other words, the position of the stopper surface 16 is displaced by providing the recess 15 corresponding to the extension of the shaft portion 2 in the stopper member 12 of FIG. The reason why the recess 15 is opened in the same direction as the outlet hole 9 is to make it possible for the shaft-shaped component 1 to exit substantially in the diameter direction of the component supply pipe 4.

In the embodiment shown in FIG. 6, the length of the L-shaped member is increased by stopping the above-mentioned depression of the stopper member 12, thereby securing the extension L2. This is the simplest form.

FIGS. 7 and 8 show the embodiment in which the length of the shaft-like part 1 is shorter than that of FIG. Since the length of the stopper member becomes shorter, the stopper surface 16 is
A projection 17 is formed on the base 2, and a top surface thereof is a stopper surface 16. In both figures, the symbol L3 indicates a shortened length.

While the stopper member has mainly been described above, the component supply mechanism installed in a pair with the stopper member will be described. The supply rod 18 that makes an advancing / retracting stroke is provided with a distal end surface 19 that receives the flange 3 of the projection bolt 1 in close contact, and the shaft-like component 1 is temporarily attached to the distal end surface 19 of the supply rod 18 as shown by a two-dot chain line in FIG. Means for locking are provided. Various means may be considered as means for holding the flange 3 lightly from both sides with a leaf spring, and means for holding by suction with air vacuum. In this case, a magnet 20 (permanent magnet) is used. The longitudinal direction of the component supply pipe 4 and the supply rod 1
8, the tip of the supply rod 18 can be positioned near the outlet hole 9 by an acute angle.

The supply rod 18 is housed in an outer cylinder 21,
The component supply pipe 4 is welded to the outer cylinder 21 at a welding location indicated by reference numeral 22. An air cylinder 23 is connected to an end of the outer cylinder 21, and a piston rod 24 is connected to the supply rod 18. When the supply rod 18 reaches the target location while holding the shaft-shaped component 1, the attractive force of the magnet 20 must be reduced to release the shaft-shaped component 1. For this purpose, the supply rod 18 comprises a hollow shaft 25 and an inner shaft 26 slidably inserted inside the hollow shaft 25, and a regulating pin 27 fixed near the upper end of the inner shaft 26 has a length extending in the stroke direction of the hollow shaft 25. It projects through the hole 28 as shown. An air cylinder 29 is fixed to the outer surface of the outer cylinder 21, and an engagement piece 31 is connected to the piston rod 30 of the air cylinder 29. The engagement piece 31 is formed by a long hole 32 formed in the outer cylinder 21 in the stroke direction. It protrudes into the outer cylinder 21. The elastic force of the compression coil spring 33 inserted into the hollow shaft 25 acts on the inner shaft 26, whereby the regulating pin 27 contacts the lower end of the elongated hole 28. In this state, the hollow shaft 25
And the end face of the inner shaft 26 form one plane to form the end face 19. The magnet 20 is attached to the tip of the inner shaft 26.

An elongated holding member 34 is welded to the lower end of the outer cylinder 21 and a magnet (permanent magnet) 35 is provided inside the elongated holding member 34.
It is arranged toward the side of No. 9. The magnet 35 is used to move the shaft-like component 1 at the pipe end 7 of the component supply pipe to the distal end face 1 of the supply rod.
9 to be moved by suction. In order to more strongly apply the attractive force of the magnets 20 and 35 to the shaft-like component 1, the hollow shaft 25, the inner shaft 26, the holding member 34, and the like are made of a nonmagnetic material such as stainless steel or aemiumium, and in some cases, a synthetic resin. Has been produced. With the above structure, the magnet 35 is arranged in a stationary state. Reference numeral 36 denotes a support piece protruding from the distal end of the hollow shaft 25, which prevents the transferred projection bolt 1 from swinging counterclockwise due to inertia.

Referring to FIG. 2, the holding piece 10 has an air cylinder 38 fixed to a bracket 37 connected to the outer cylinder 21, and a piston rod 39 thereof is connected to the holding piece 10. Therefore, the shaft portion 2 that has entered the groove-shaped guide surface 8 cannot be moved by the holding piece 10, and then when the holding piece 10 is retreated by the operation of the air cylinder 38, the projection bolt 1 is attracted by the magnets 35 and 20. It is held at the tip of the supply rod 18.

Thereafter, when the supply rod 18 advances by the operation of the air cylinder 23 and the tip of the shaft 2 reaches the target position, the regulating pin 27 stops immediately near the engagement piece 31. Next, when the engagement piece 31 is retracted by the operation of the air cylinder 29, the displacement extends to the magnet 20 via the regulating pin 27 and the inner shaft 26 while compressing the coil spring 33, and thus the magnet 20 is displaced from the shaft-like component 1. As the distance increases, the suction force also substantially disappears, and the shaft-like component 1 is released from holding the distal end of the supply rod 18.

[0014]

According to the present invention, since the detachable stopper member corresponding to the length of the shaft component is attached to the end of the component supply pipe, the length of the shaft component is changed. Thus, it is possible to avoid re-installing the entire component supply pipe and the entire unit as in the related art. Since the stopper member can be replaced without affecting the guide surface provided at the end of the component supply pipe, that is, without changing the guide surface, it is necessary to recreate the guide surface which is troublesome in manufacturing. There is no. Since the position of the stopper surface is changed in accordance with the length of the shaft-like component, the relative position between the shaft-like component and the guide surface, for example, the relative position between the flange of the projection bolt and the guide surface, does not change. The holding of the part at the tube end of the tube is always uniform, regardless of the length of the part.
In addition to such uniform holding, the tip of the supply rod is arranged near the outlet hole, so that the component can be reliably reached at the tip of the supply rod. Since the longitudinal direction of the component supply pipe and the supply rod are set to have an acute positional relationship, it is possible to arrange the supply rod tip near the above-described outlet hole. In such a situation, since the shaft part is attracted by the magnet, the transfer of the shaft part to the supply rod is reliably achieved. Since the supply rod is provided with a means for temporarily locking the shaft-shaped component, the component holding property when the supply rod advances is improved.

The effects that can be mentioned from the specific configuration of the embodiment are listed as follows. Although the stopper member 12 is basically a member having an L-shaped cross section, the stopper member 12 includes a thick, block-shaped base portion 40 and a thin, flat plate-shaped mounting portion 41. Therefore, it is easy to form the depression 15 by engraving the base portion 40, and furthermore, the flat cylindrical portion of the mounting portion 41 is brought into close contact with the flat portion 13 so that the stopper member 12 is firmly attached to the pipe end 7. Can be fixed. Also,
Since the projections 17 are formed on the block-shaped base 40, the projections 17 are installed with high stability.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line (2)-(2) of FIG.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 1;

FIG. 4 is a three-dimensional view of a stopper member.

FIG. 5 is a vertical sectional side view showing the vicinity of a pipe end;

FIG. 6 is a longitudinal sectional side view near a pipe end showing another embodiment.

FIG. 7 is a perspective view of a stopper member according to another embodiment.

FIG. 8 is a vertical sectional side view showing the vicinity of a pipe end;

FIG. 9 is a longitudinal sectional side view near a pipe end showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft-shaped component 4 Component supply pipe 11, 16 Stopper surface 7 Tube end 9 Exit hole 12 Stopper member 8 Guide surface 18 Supply rod 35 Magnet 20 Temporary locking means

Claims (4)

(57) [Claims] 1. An outlet hole provided with a stopper surface at an end of a component supply pipe for a shaft-like component and for transferring a shaft-like component to a pipe end of the component supply pipe substantially in a diameter direction of the component supply pipe. Wherein a stopper member having a stopper surface corresponding to the length of the shaft-like component is detachably attached to a pipe end of the component supply pipe. Stopper for parts supply pipe for parts. 2. The component supply pipe according to claim 1, wherein the inner wall of the end of the component supply pipe has a guide surface corresponding to the shape of the shaft-shaped component, and the stopper member is attached at a portion that does not affect the shape of the guide surface. Stopper for the component supply pipe for the shaft-shaped component. 3. A shaft component according to claim 2, wherein a tip end of a supply rod for holding the shaft component and reaching a target position is located near an outlet hole of the shaft component. Parts supply pipe stopper. 4. The apparatus according to claim 3, wherein the longitudinal direction of the component supply pipe and the supply rod have an acute positional relationship, and the magnet for attracting the axial component toward the supply rod is arranged in a stationary state. A stopper for a component supply pipe for a shaft-shaped component, wherein a means for temporarily locking the component is provided on the supply rod.