JP3283416B2 - Fastener delivery equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automatic supply of bolts and nuts to a fastening machine, for example, in shield excavation work, as a part of an automatic segment assembly process for constructing a continuous wall by bolting segment pieces. The present invention relates to a fastener delivery facility.

[0002]

2. Description of the Related Art Conventionally, a structure shown in FIG. That is, the nut supply device (fastener supply device) 60 is
The nut runner (fastener) 65 is constituted by a rotatable socket 66 and the like. The nut holding portion 61 is provided with a holding groove 63 corresponding to the hexagon of the nut 68 in order to prevent the held nut 68 from rotating together.

According to this conventional configuration, the nut 68 in the holding groove 63 is pushed out toward the nut runner 65 by the operation of the supply cylinder 62 while the nut 68 is held in the holding groove 63 and the socket 66 is rotated. . At this time, as shown in FIG. 9, when the hexagonal phase between the nut 68 and the socket 66 is shifted, the nut 68 is brought into contact with the socket 66 by the supply cylinder 62 in a state where the nut 68 is in contact with the outer surface of the socket 66. Continue pressing, and when the hexagonal phase of the nut 68 and the socket 66 match due to the rotation of the socket 66,
The nut 68 will fit into the socket 66. At this time, the nut 68 until it is fitted into the socket 66 is
The co-rotation is prevented by.

[0004]

However, according to the above-mentioned conventional structure, the nut 68 is kept pressed against the socket 66 by the supply cylinder 62 until the hexagonal phase is matched. Become. In addition, because nuts with washers are difficult to use due to their structure,
Not only the nut 68 but also a device for separately transferring a washer and the like is required, and there are problems that the entire configuration becomes complicated and the number of components in the configuration increases.

[0005] Therefore, the invention according to claim 1 of the present invention is capable of transferring a nut with a washer from a fastener supplying device to a fastening machine without rotating the socket and without giving an impact. It is intended to provide a tool delivery facility.

[0006]

[0007]

Means for Solving the Problems] To achieve the above object, fastener delivery equipment according to claim 1, wherein among the present invention, the fastener supply device for supplying a nut washers, lateral rotation The disk fixed to the shaft and the outside of this disk
Locking pins arranged at a plurality of
And the holders located inside each locking pin
And each holder emits radiation from the rotation axis.
Sliding position on the line, away from the axis of rotation axis
Nut with washer locked to the locking pin
Between the outer surface of the disc and this washer.
While holding the nut with locker,
Is configured to release the pinch in the sliding position where
Furthermore, the free end surface of the holder is recessed on the side of the rotation axis.
Formed on the V-shaped positioning surface, so that it is located on the outer surface of the nut
By abut the determined surface, wax in its supply position
The phase of the nut with shear is configured to be constant, and the fastening machine is provided with a positioning mechanism for forcibly adjusting the phase of the socket facing the supply position to the phase of the fastener.

Therefore, according to the first aspect of the present invention, in the fastener supplying device, the washer of the nut with the washer is provided.
Is held by the holder,
Nut can be held and with washer held
Nuts, obtained by positioning the phase as constant supply position, the phase of the socket facing the the feed position, the washer
Can always be forced to match the phase of the nut Therefore, when the fastener and the fastener supply device are moved relatively close to each other, the socket is not rotating, but the nut with washer is not rotated .
From the fact that in accordance with the phases of the door, nuts with washers
The socket can be fitted to the socket without colliding with the socket.

Then, the holder is clamped against the washer.
After to release the, wax of by relatively spaced moving a fastener supply device and the fastening device, by shifting the nut washer fastening machine side, the fastening device from the fastener supply device
Delivery of the sheared nut can be performed without rotating the socket and without giving an impact. The fastening machine then places the socket, i.e. the nut with washer, against the fastening point and with the socket the nut with washer.
By rotating the door, allows the desired fastening.

According to a second aspect of the present invention, there is provided a fastener transfer device according to the first aspect, wherein the positioning mechanism includes a rotation stopper device provided in a rotation transmission path from the rotation driving device to the socket. And a stopper release device.

Therefore, according to the second aspect of the present invention, in the fastening machine, by stopping the rotation transmission on the rotation transmission path by the rotation stopper device, the phase of the socket can always be automatically adjusted to the phase of the fastener. In this state, after the fastener is moved to the fastening machine side, the stopper is released by operating the stopper release device, whereby the socket can be rotated by the rotary drive device to perform the intended fastening. After the intended fastening, the stopper release device is deactivated to stop the rotation transmission on the rotation transmission path again by the rotation stopper device, so that the phase of the socket can be adjusted to the phase of the fastener.

[0012]

[0013]

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
The state adopted for delivery of the nut with washer will be described with reference to FIGS. Here, the nut 1 with a washer is formed by a hexagonal nut 2 and a large-diameter washer 3 integrated with the nut 2.

4 to 7, a fastener supply device 10 for supplying a nut with a washer (an example of a fastener) 1 is a rotating magazine type, and is rotatably mounted on a machine frame 11 via a bearing 12. The supported lateral rotation shaft 13 and this rotation shaft 13
, A plurality of locking pins 15 arranged at a plurality of locations (ten locations at 36-degree intervals in the embodiment) at predetermined angles on the outer surface of the disk 14, and each locking pin 15 , A first proximity switch 17 for checking the presence of the nut 1 with a washer at a predetermined angle to the supply position 55, and a nut with a washer at a predetermined angle to the supply position 55 It is composed of a second proximity switch 18 for confirming [No] of 1 and the like.

The holder 16 is configured to be slidable on radiation from the axis of the rotating shaft, and the nut 16 with the washer locked by the locking pin 15 at a sliding position away from the axis of the rotating shaft. The washer 3 is sandwiched between the outer surface of the disk 14 to hold the nut 1 with the washer, and is released at a sliding position close to the rotation axis. . Further, the free end surface of the holder 16 has a V-shaped positioning surface that is recessed on the rotation axis side.
The phase of the nut 1 with washer is always kept constant by bringing the positioning surface 19 into contact with the outer surface of the nut 2 of the nut 1 with washer which is formed on the locking pin 15 and is locked by the locking pin 15.

A rotary driving device (not shown) interlocked with the rotary shaft 13 intermittently rotates the disk 14 at a predetermined angle, and always rotates the nut 1 with the washer positioned and held by the holder 16 in phase. Is set to be at the supply position 55 with the constant.

In FIG. 1 to FIG. 3, a main body 21 of the fastening machine 20 is shaped like a case, and a hydraulic motor (rotary driving device) 22 which can be driven forward and reverse is provided at an upper portion thereof.
The drive gear 24 is fixed to the output shaft 23 from the side. A cylindrical operating shaft 25 is provided at the lower portion of the main body 21 via a bearing metal 26 so as to freely rotate, and a passive gear 27 is integrally provided on the operating shaft 25. The drive gear 24 and the passive gear 27
Are interlocked via three (plural) intermediate gears 28, 30, 32, where the intermediate gears 28, 30, 32 are respectively
It is rotatably supported on the main body 21 side via 29, 31, and 33.

With the above configuration, the operating shaft 25 is connected to the output shaft 23
At the same speed. A cylindrical socket 34 is fixed to the operation shaft 25, and an inner surface on an outer end side of the socket 34 is
An oval-shaped fitting portion 35 is formed to fit the nut 2 of the nut 1 with a washer. A large number of holding magnets 36 are buried in the back of the fitting portion 35.

The fastening machine 20 is provided with a positioning mechanism 40 for forcibly adjusting the phase of the socket 34 to the phase of the nut 1 with washer. The positioning mechanism 40 includes a rotation stopper device 42 provided in a rotation transmission path 41 from the hydraulic motor (rotation drive device) 22 to the socket 34, a stopper release device 48, and the like.

That is, a claw gear 43 is fixed to the output shaft 23. On the outer periphery of the claw gear 43, approximately several hexagonal hexagons (in the embodiment, six at every 60 degrees) have a sawtooth shape. A locked portion (teeth) 44 is formed. A stopper body 46 is provided on the main body 21 side via a pin 45 along the output shaft 23 so as to be swingable up and down.
The free end locking portion 46A is configured to be freely engageable with the locked portion 44. A winding spring 47 that swings the stopper body 46 upward in the engagement direction is provided on the main body 21 side.

Accordingly, the locking portion 46A of the stopper body 46, which is urged to swing upward by the elastic force of the winding spring 47, is engaged with one of the locked portions 44, and is engaged by the hydraulic motor 22 in reverse. By performing close coupling, the rotation of the output shaft 23, that is, the rotation transmission in the rotation transmission path 41 is stopped, and at this time, the operation shaft 25,
That is, the phase of the socket 34 is
Is set to match the phase of By the above 43 to 47, the rotation stopper device provided in the rotation transmission path 41
42 examples are configured.

The main body 21 is provided with a cylinder 49,
The extension / retraction rod 50 of the cylinder 49 is opposed to the upper swing side surface of the stopper body 46. Therefore, by projecting the retractable rod 50 of the cylinder 49, the stopper body 46
Is pivoted downward against the elastic force of the winding spring 47, whereby the locking portion 46A is separated from the locked portion 44. A release confirmation proximity switch 51 for confirming separation of the stopper body 46 and a rotation confirmation proximity switch 52 for confirming rotation of the claw gear 43 by a predetermined angle are provided on the main body 21 side. By the above 49-52,
An example of the stopper release device 48 is configured.

In FIG. 2, a bolt hole 6, which can be freely communicated with a pair of workpieces 5,
8 are formed. Reference numeral 9 denotes a bolt. The operation of the above embodiment will be described below.

In the fastener supply device 10, the second proximity switch 18 supplies the nut 1 with the washer to the locking pin 15 for which the absence of the nut 1 with the washer is confirmed.
It is externally fitted to the locking pin 15 through the screw hole. Then, the holder 16 is slid to the side away from the axis of the rotating shaft, and the
6 by holding the washer 3 between the outer surface of the disc 14 and the
By holding the positioning surface 19 against the outer surface of the nut 2 and rotating the nut 1 with the washer around the locking pin 15, the phase of the nut 1 with the washer is made constant.

As described above, the nut 1 with the washer held in a fixed phase is moved at a predetermined angle by the intermittent rotation of the disk 14, and the nut 1 with the washer is operated by the first proximity switch 17 before the supply position 55. After confirming [Yes] of 1, it is positioned at this supply position 55 with a constant phase.

As shown in FIG. 7A, the socket 34 of the fastening machine 20 is opposed to the supply position 55. That is, in the fastening machine 20, as shown by the solid line in FIG. 1, the locking portion 46A of the stopper body 46 urged upward by the elastic force of the winding spring 47 is engaged with one locked portion 44. At the same time, the engagement is performed densely by the reverse drive of the hydraulic motor 22.
Thereby, the rotation of the output shaft 23, that is, the rotation transmission in the rotation transmission path 41 is stopped, and the phase of the socket 34 can always be automatically adjusted to the phase of the nut 1 with the washer.

In this state, first, the fastening machine 20 is moved (advanced) to the fastener supplying device 10 side. At this time, although the socket 34 is not rotating, since the phases of the socket 34 and the nut 1 with the washer are matched as described above, FIG.
As shown in (B), the socket 34 can be fitted to the nut 2 of the nut 1 with a washer via the fitting portion 35 without collision or the like. And put the nut 2 in the socket
It is attracted and held by the holding magnet 36 on the 34 side.

Next, the holder 16 is slid in the direction approaching the axis of the rotating shaft, and the imaginary lines in FIGS.
As shown in (C), the pinching of the washer 3 is released. Thereafter, as shown in FIG. 7 (D), the fastening machine 20 is moved away from the fastener supply device 10 (retreat). At this time, the nut with washer 1 can be shifted to the fastening machine 20 side without dropping by the attraction and holding by the holding magnet 36 described above. Thereby, the delivery of the nut 1 with the washer from the fastener supply device 10 to the fastening machine 20 can be performed without rotating the socket 34 and without giving an impact.

Thereafter, as shown in FIG.
The socket 34, that is, the nut 1 with a washer is opposed to the bolt hole 6 and screwed into the bolt 9 inserted between the bolt holes 8, 6. At that time, in the fastening machine 20, the stopper release device 48 is operated. Ie cylinder
The extension and retraction of the lever 49 causes the extension and retraction rod 50 to project, and the extension and retraction rod 50 is brought into contact with the upper swinging side surface of the stopper body 46,
The stopper body 46 can be swung downward against the elastic force of the helical spring 47, so that the locking portion 46A is disengaged from the locked portion 44 as shown by the phantom line in FIG.

The detachment of the stopper body 46 can be confirmed by the release confirmation proximity switch 51, and by operating the hydraulic motor 22 based thereon, the rotation of the output shaft 23 is controlled by the drive gear 24, the intermediate gears 28, The transmission can be transmitted to the operating shaft 25 through the passive gears 30 and 32 and the socket 34 is rotated, so that the desired fastening to the workpieces 5 and 7 can be performed.

After the desired fastening, the cylinder 49 of the stopper releasing device 48 is contracted and the retractable rod 50 is retracted, whereby the stopper body 46 is swung upward by the elastic force of the winding spring 47. As described above, the claw gear 43 is rotated forward by the hydraulic motor 22, the predetermined rotation is confirmed by the rotation confirmation proximity switch 52, and the claw gear 43 is rotated reversely by the hydraulic motor 22. The locking portion 46A of the stopper body 46 which is urged upward by the elastic force of the winding spring 47 can be closely engaged with one locked portion 44.

[0033]

In the above embodiment, the positioning mechanism 40
Although a ratchet mechanism that can rotate only in one direction is adopted, other types such as a pin insertion type may be adopted.

In the above embodiment, the positioning mechanism 40
Is disposed in the portion of the output shaft 23, which is the intermediate shaft 29,
It may be of a type that is disposed on the portions 31 and 33 and the operation shaft 25.

[0036]

According to the first aspect of the present invention, in the supply position, the washer held by the fastener supply device is provided.
When the fastening machine and the fastener supply device are moved relatively close to each other, the socket collides against the nut with a washer because the nut with a fastener and the socket of the fastening machine oppose each other in phase. It can fit outside without doing anything. That is, the transfer of the nut with the washer from the fastener supplying device to the fastening machine can be performed quickly without rotating the socket, and without the need for the time for phase matching. eliminates rotation pressing of, together with the impact load is not generated, the delivery equipment
The structure can be simplified .

According to the second aspect of the present invention,
By appropriately operating the rotation stopper device and the stopper release device to stop or interlock the rotation transmission in the rotation transmission path, it is possible to easily and reliably perform the phase adjustment and the intended fastening. .

[0038]

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention and is a partially cutaway front view of a fastening machine in a fastener delivery facility.

FIG. 2 is a partially cutaway side view of a fastening machine in the fastener delivery facility.

FIG. 3 is a rear view of the fastening machine in the fastener delivery facility.

FIG. 4 is a front view of a fastener supply device in the fastener delivery facility.

FIG. 5 is a vertical sectional side view of a main part of a fastener supply device in the fastener delivery facility.

FIG. 6 is a front view of a main part of a fastener supply device in the fastener delivery facility.

FIG. 7 is a schematic side view illustrating a fastening operation process in the fastener delivery facility.

FIG. 8 shows a conventional example, and is a partially cut-away side view of a main part in a fastener delivery facility.

FIG. 9 is a front view of a main part showing the same phase shift.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nut with washer (fastener) 2 Nut 3 Washer 5 Workpiece 7 Workpiece 9 Bolt 10 Fastener supply device 13 Rotating shaft 14 Disk 15 Locking pin 16 Holder 19 Positioning surface 20 Fastener 22 Hydraulic motor (rotating) 23) Output shaft 24 Drive gear 25 Operating shaft 27 Passive gear 34 Socket 35 Fitting part 36 Magnet for holding 40 Positioning mechanism 41 Rotation transmission path 42 Rotation stopper device 43 Claw gear 44 Locked part 46 Stopper body 46A Lock Part 47 Winding spring 48 Stopper release device 49 Cylinder 55 Supply position

Continuation of the front page (56) References JP-A-6-262450 (JP, A) JP-A-4-25328 (JP, A) JP-A-7-82995 (JP, A) Jpn. , U) Japanese Utility Model Application Hei 6-619 (JP, U) Japanese Utility Model Application Hei 2-63976 (JP, U) Japanese Utility Model Application Hei 2-97532 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB Name) B23P 19/00-21/00 B25B 23/04 E21D 11/40

Claims (2)

(57) [Claims] A fastener supply device for supplying a nut with a washer includes a disk fixed to a lateral rotation shaft, and a circular plate.
Arranged at multiple places at predetermined angles on the outer surface of the board
A locking pin and a hook provided inside each locking pin.
And each holder is separated from the axis of rotation axis.
Is slidable on the radiation of
With a washer locked to the locking pin in the sliding position
Hold the nut washer between the outer surface of the disc and this
While holding the nut with washer, the rotation axis
Configuration to release pinching at sliding position close to
And the free end surface of the holder is recessed toward the rotation axis.
Formed on the V-shaped positioning surface, and the outer surface of the nut
Is configured to make the phase of the nut with washer constant at its supply position by contacting the positioning surface with
The fastener transferring apparatus further comprises a positioning mechanism for forcibly adjusting the phase of the socket facing the supply position to the phase of the fastener. 2. The fastener transfer equipment according to claim 1, wherein the positioning mechanism comprises a rotation stopper device provided in a rotation transmission path from the rotation drive device to the socket, and a stopper release device.