JPH05123928A - Bolt or nut etc. supply and tightening device - Google Patents

Abstract

PURPOSE:To give each parts rotation directional braking force and smoothly insert the parts into an engaging hole by making a rodlike pressing member and the attracting force of a magnet work on the bolt contained in the groove of a holding member and the nut or the like placed on the holding member. CONSTITUTION:A holding member 24 is located at a position retracted toward the left, and clogging member 31 is located at an advanced position. In such a state, when a bolt 1 is supplied from a parts supply tube 18, a shaft section 3 forcefully goes into the narrow groove 27 of the holding member 24. This shaft section 3 is certainly positioned by the clogging member 31 and a magnet 32. In the next step, when the holding member 24 is advanced toward the right by means of an air cylinder 22 until the head section 2 comes directly below a engaging hole 6, the holding member 24 stops. In the next step, after a piston rod 35 is pressed to the shaft section 3 and the bolt 1 is given braking force, the bolt 1 is fitted into the engaging hole 6 without being rotated due to the advance of a supply rod 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to supplying and tightening parts such as bolts and nuts, and is intended to put a commonly used bolt runner or nut runner into practical use as an automatic machine. is there.

[0002]

2. Description of the Related Art The conventional technique corresponding to the present invention is not known to the extent that I am aware of it, but I have invented "Bolt or Nut" filed on September 21, 1991. And tightening method for supplying the same, and the device therefor ”can be targeted for improvement. In this article, the parts held by the holding member that moves back and forth do not receive any braking force in the rotational direction.

[0003]

Since the braking force is not applied as described above, when the parts are fitted into the engagement holes of the rotary supply rod, the parts rotate together, so that a smooth engagement is achieved. There is a problem that they are not matched.

[0004]

SUMMARY OF THE INVENTION The present invention is provided to solve the above-mentioned problems, in which a holding member for a component that moves back and forth is a bolt or nut at the end of the component supply passage. Etc., then move the holding member to a position where the parts are coaxial with the rotary feed rod,
Next, in a type in which the parts are engaged with the engaging holes of the supply rod and the supply rod advances, a means for applying a braking force against rotation to the parts held by the holding member is provided. Since the braking force acts on the component, the component fits into the engaging hole of the supply rod without rotating together.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the embodiment of FIGS. 1 to 4 will be described. The component in this embodiment is a bolt 1, reference numeral 2 is a hexagonal head, and 3 is a shaft portion. Is shown. The rotation advancing / retracting type supply rod 5 has an engagement hole 6 for receiving the head portion 2 opened downward at a tip end thereof,
It is preferable that the engagement hole is a dodecagonal shape or a 24-sided shape rather than a hexagonal shape in terms of smooth engagement. A magnet (permanent magnet) 7 is embedded in the inner portion of the engagement hole 6 to prevent the head 2 from falling out of the engagement hole 6 due to the attracting magnetic force.

The supply rod 5 is connected to a rotary motor 8 driven by compressed air, electric current (air hoses, electric wires, etc. are not shown), and a slide piece 9 fixed to the motor 8. Moves back and forth along the guide rail 10.
As is apparent from FIG. 4, the dovetail groove 11 is formed on the guide rail 10.
Is formed, and the slide piece 9 is fitted thereto. The guide rail 10 is welded to a fixed piece 13 attached to the stationary member 12, and is arranged along the advancing / retreating direction of the supply rod 5. An air cylinder 14 is attached to the fixed piece 13, and its piston rod 15 is connected to the rotary motor 8.

The supply rod 5 penetrates the inside of the guide cylinder 16 in a snug state, and a component supply pipe 18 having a component supply passage 17 is integrated with the guide cylinder 16. Here, welding is performed with the joining plate 19 interposed. The component supply pipe 18 is installed in an orientation that forms an acute angle with respect to the axis of the supply rod 5 as shown in the drawing (it may be parallel instead of acute angle), and the component supply pipe 18 is welded to the joint plate 19. The lower surface of this connecting plate forms an imaginary plane with the lower end surface of the guide cylinder 16 as shown. The connecting plate 19 has a through hole 20 communicating with the component supply passage 17.

A fixing plate 21 is welded to the connecting plate 19,
An air cylinder 22 is attached to it, and a holding member 24 is connected to its piston rod 23. Holding member 24
As can be understood from the respective drawings, is made of a substantially rectangular parallelepiped member, and is adapted to move forward and backward while sliding on the lower end surfaces of the coupling plate 19 and the guide cylinder 16. A groove 25 for receiving the bolt 1 is formed on a side surface of the holding member 24, that is, a surface on the side advanced by the air cylinder 22. This groove 2
5 is composed of a wide width portion 26 that receives the head portion 2 and a narrow width portion 27 that receives the shaft portion 3, and is in a positional relationship communicating with the through hole 20. An L-shaped bracket 28 is welded to the holding member 24, and a closing member 31 is attached to a piston rod 30 of an air cylinder 29 fixed to the bracket 28, and the narrow portion 27 of the groove 25 is moved by the forward / backward movement of the air cylinder 29. It occludes and releases. A magnet (permanent magnet) 32 is embedded in the closing member 31 to position the bolt 1 that has entered.

Various methods are conceivable as means for applying a braking force to the bolt 1, but here, an example in which a pressing force is applied to the shaft portion 3 is illustrated. That is, the fixing piece 33 is welded to the bracket 28 in an oblique direction, the air cylinder 34 is attached thereto, and the piston rod 35 thereof is pressed against the shaft portion 3. The holding member 24 is passed through the through hole 36 formed in the oblique direction. It has reached the shaft 3. Note that, in FIG. 2, the air cylinder 34 and the piston rod 35 are illustrated by chain double-dashed lines for easy understanding. The component supply pipe 18 has a flexible supply hose 3 made of synthetic resin.
7 is connected.

An air cylinder 39 is firmly fixed to the rotary motor 8 via a bracket 38, and a piston rod 40 of the air cylinder 39 is welded to the guide cylinder 16 of the arm member 4.
It is connected to 1, and when the piston rod 40 retracts,
Since only the guide cylinder 16 is slid upward while the supply rod 5 is left as it is, the component supply pipe 18, the holding member 24, the air cylinder 34, etc. are also moved upward together, so that only the supply rod 5 is relatively moved. It becomes the form that sticks out.

To explain the operation of this embodiment, the holding member 24 is in the leftward retracted position as shown in the drawing, and the closing member 31 is in the advanced position. When the bolt 1 is fed in from the shaft portion 3, the shaft portion 3 vigorously enters the narrow groove 27 and is positioned as shown by the solid line in FIG. Shaft 3 is narrow groove 2
When it enters 7, the closing member 31 and its magnet 32
By this, the positioning is surely performed. next,
When the holding member 24 is advanced to the right by the air cylinder 22 and the head portion 2 reaches directly below the engagement hole 6, that is, the position where the bolt 1 is coaxial with the supply rod 5, the holding member 24 is there.
Will stop. When the bolt 1 enters the holding member 24 or advances to the position indicated by the chain double-dashed line in FIG. 1, the piston rod 35 is pressed against the shaft portion 3 to apply a braking force to the bolt 1. Then, when the supply rod 5 rotates and advances slightly, the bolt 1 receiving the braking force
Is still stopped, the bolt 1 fits into the engagement hole 6 without rotating together. After that, the closing member 31
When the holding member 24 retracts, the bolt 1
Is held by the supply rod 5, the holding member 24 is
After returning to the position shown by the solid line, the closing member 31 advances again and prepares for receiving the next bolt. After that, when the air cylinder 39 makes a reduction stroke, only the supply rod 5 relatively projects as described above. Then, when the air cylinder 14 makes an advancing stroke, the bolt 1 reaches the tip of the screw hole at the tip,
It is screwed in there.

FIG. 5 shows a case in which the entire holding member 24 is realized as a chuck structure. A substrate 42 is fixed to the tip of the piston rod 23, and a pair of jaws 43,
44 is attached by pivots 45, 46 and jaws 4
The shaft portion 3 of the bolt is grasped between 3 and 44. A coil spring 47 is arranged between the rear portions of the jaws 43, 44 so as to apply a braking force to the shaft portion 3 and sandwich it.

Next, referring to FIGS. 6 and 7, the flange 4 is
In the case of the nut 49 having eight, the component supply pipe 18 is installed in a substantially horizontal direction, and the nut 49 that has moved to the holding member 24 standing by in the immediate vicinity of the pipe 18 is transferred. A step portion 50 for receiving the flange 48 is formed at the tip of the holding member 24, and an arc portion 51 (FIG. 7) for positioning the circular flange 48 is formed.
(See) is provided. A magnet (permanent magnet) 52 is embedded in the step portion 50. The nut 49 is attracted by the magnet 52, so that the sliding resistance in the rotational direction, that is, the braking force is applied. The component supply pipe 18 is welded to the guide cylinder 16 via the bracket 53, and the holding member 24 is connected to the guide pipe 54.
The guide pipe 54 is held in a slidable state inside and is welded to the guide tube 16 via a bracket 55. Other configurations and operations are similar to those in the case of FIG. 1 and can be easily understood, so detailed description is omitted.

In the embodiment described above,
An air hose connected to each air cylinder is not shown in the drawing, and the operation sequence can be easily implemented by a normal air control valve or the like. Further, when the head portion 2 of the bolt is fitted into the engagement hole 6, the operation is such that the supply rod 5 slightly advances in FIG. 1, but this is not the case, but the stroke of the air cylinder 39 is made a two-stage type. Then, the head 2 may be fitted into the engagement hole 6 in the first step, and the supply rod 5 may relatively project in the second step.

[0015]

According to the present invention, since the rod-shaped pressing member and the attraction force of the magnet are applied to the bolt accommodated in the groove of the holding member, the nut mounted on the holding member, and the like, A braking force in the rotational direction is applied to the parts,
Therefore, it is possible to smoothly fit the engaging hole in a short time without rotating together with the rotation of the supply rod.

[Brief description of drawings]

FIG. 1 is a side view in which a part of the embodiment of the present invention is longitudinally cut.

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

FIG. 3 is a view taken in the direction of arrow (3) in FIG.

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

FIG. 5 is a plan view when the holding member is in a chuck type.

FIG. 6 is a vertical sectional side view showing another embodiment.

FIG. 7 is a plan view of a holding member in FIG.

[Explanation of symbols]

 24 holding member 17 parts supply passage 1 bolt 49 nut 5 supply rod 6 engagement hole 35, 52 means for applying a braking force

Claims (1)

[Claims] 1. A holding member for a component that moves forward and backward holds a component such as a bolt or a nut at the end of the component supply passage,
After that, the holding member was moved to a position where the part was coaxial with the rotary supply rod, and then the part was engaged with the engaging hole of the supply rod to allow the supply rod to advance. A supply tightening device for bolts, nuts, etc., characterized in that means for applying braking force to rotation is installed on the parts.