JPH0637899Y2 - Nut delivery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a nut delivery device, and more particularly to a device for supplying a nut to a socket of a tightening tool.

[Conventional technology]

When tightening the bolt to the nut, the nut must be inserted into the socket of the tightening tool.
It is a difficult task to insert it into alignment with the inner peripheral surface of the prism.

Conventionally, this kind of work is performed by hand,
The following methods are adopted.

(1) An operator temporarily assembles the nut on the tip of the bolt in advance so that the tentatively assembled nut is inserted into the socket when tightening.

(2) The operator inserts the nut directly into the socket.

(3) Rotate the socket several times with respect to the nut placed in the feeder and wait for the nut to be inserted naturally into the socket.

[Problems to be solved by the device]

By the way, in the conventional manual method as described above,
The work efficiency is extremely poor, and particularly in the methods (1) and (3), when the nut is inserted into the socket, the nut that comes into contact with the tip of the socket rotates as the socket rotates without being inserted into the socket. In many cases, there is a problem that a tightening error occurs.

The present invention is intended to solve such a problem, and an object thereof is to provide a nut delivery device capable of reliably delivering and supplying a nut to a socket in automatic tightening.

[Means for Solving the Problems]

In order to achieve the above object, the nut delivery device of the present invention has a nut holder having a nut accommodating recess at one end and a cylindrical portion at the other end, and the nut holder having the cylindrical portion formed through the cylindrical portion. A bearing mechanism that rotatably supports, a nut pushing cylinder that is arranged adjacent to the bearing mechanism, and a nut that is mounted on the cylinder and coaxially fits in the cylindrical portion to push the nut in the nut accommodating concave portion. With a nut push-out rod, a socket receiving recess formed adjacent to the nut receiving recess is provided, and the socket receiving recess is disposed on the inner peripheral portion of the nut receiving recess to contact the polygon outer peripheral surface of the nut. Plural nut holding plungers capable of contacting with each other, and a plurality of nut retaining plungers disposed at the inner peripheral portion of the socket receiving recess and capable of respectively contacting the polygonal outer peripheral surface of the socket. A socket guide plunger is provided so that the nut holding plunger and the socket guide plunger can align the socket entering the socket receiving recess with the nut in the nut receiving recess. It is characterized in that they are relatively positioned.

[Action]

In the nut delivery device of the present invention described above, when the nut is pushed into the nut accommodating recess of the nut holder, a plurality of nut holding plungers are brought into contact with the polygonal outer peripheral surface of the nut so that the nut polygon The nut holder rotates with respect to the bearing mechanism each time in order to respond to different phases when the outer peripheral surface is pushed.

Next, when the polygonal outer peripheral surface of the socket tip is inserted into the socket receiving recess of the nut holder that accommodates the nut in this way, a plurality of socket guide plungers come into contact with the polygonal outer peripheral surface of the socket. The nut holder rotates each time with respect to the bearing mechanism in order to correspond to different phases when the polygonal outer peripheral surface of the socket is pushed.

Then, during the second rotation, the relative phases of the nut holding plunger and the socket guiding plunger make the phases of the polygonal outer peripheral surfaces of the nut and the socket in the respective recesses completely coincide.

Then, when the nut pushing cylinder is operated, the nut is pushed by the nut pushing rod and pushed into the polygonal inner peripheral surface of the socket.

In this way, in the nut delivery device of the present invention, the action of delivering the nut to the socket is smoothly performed.

〔Example〕

Next, an embodiment of the present invention will be described. FIGS. 1 and 2 show a nut delivery device as one embodiment of the present invention. FIG. 1 is a side view thereof and FIG. 2 is a view of FIG. FIG. 3 is a view taken along the arrow II-II, and FIGS. 3 and 4 show a socket used in the nut delivery device of the present invention. FIG. 3 is a side view thereof, and FIG. Is.

As shown in FIGS. 1 and 2, a nut delivery device according to an embodiment of the present invention includes a nut holder 3 having a nut accommodating recess formed at one end and a cylindrical portion 2 formed at the other end.
A bearing mechanism 4 for rotatably supporting the nut holder 3 via the cylindrical portion 2, a nut pushing cylinder 5 arranged adjacent to the bearing mechanism 4, and a nut mechanism mounted on the cylinder 5 inside the cylindrical portion 2. And a nut push-out rod 6 capable of pushing out the nut in the nut accommodating recess coaxially. The nut holder 3 is provided with a socket receiving recess 7 formed adjacent to the nut accommodating recess 1, and is arranged at a circumferential portion of the nut accommodating recess 1 so as to respectively contact a polygonal outer peripheral surface of the nut. There are provided a plurality of nut holding plungers 8 that can come into contact with each other, and a plurality of socket guide plungers 9 that are arranged at the circumferential portion of the socket receiving recess 7 and can come into contact with the polygonal outer peripheral surface of the socket. Of the nut holding plunger 8 and the socket guiding plunger 9 are relatively positioned so that the socket entering the socket receiving recess 7 can be aligned with the nut in the nut receiving recess 1. It is arranged.

More specifically, the nut holding plungers 8 are configured such that balls are rotatably fitted to the tips of the screw members, and six nuts are uniformly arranged in the radial direction in the circumferential portion of the nut receiving recess 1. Similarly, six socket guide plungers 9 are evenly arranged in the radial direction in the inner peripheral portion of the socket receiving recess 7.

Next, as shown in FIGS. 3 and 4, the socket to which the nut is delivered from the nut delivery device is a hexagonal outer peripheral surface 11 and
It is provided with a nut insertion recess 12 which has a hexagonal inner peripheral surface 12 in phase with the hexagonal outer peripheral surface 11. A hole extending from the inner peripheral surface to the outer peripheral surface is provided on each side of these hexagons, and the cobalt magnet 13 is press-fitted and adhered to this hole.

In the nut delivery device of the above-mentioned embodiment, when the nut is pushed into the nut accommodating recess 1 of the nut holder 3 by an appropriate means, the nut holding plunger is arranged so as to avoid the apex of the hexagonal outer peripheral surface of the nut. 8 acts on the nut holder 3 with respect to the bearing mechanism 4, so that each ball of the nut holding plunger 8 is located on each outer peripheral portion of the nut. .

Next, when the polygonal outer peripheral surface 11 at the tip of the socket is inserted into the socket receiving recess 7 of the nut holder 3 containing the nut in this way, the ball of the socket guide plunger engages with the polygonal outer peripheral surface of the socket. Then, again, similarly to the case of pushing the nut, the nut holder 3 rotates with respect to the bearing mechanism 4, so that the balls of the socket guiding plunger 9 are located at the outer peripheral portions of the socket.

Then, by this second rotation, each recess 1,7
The hexagonal outer peripheral surfaces of the inner nut and the socket are completely in phase.

Then, when the nut pushing cylinder is operated to push the pushing rod, the nut is pushed by the nut pushing cylinder and smoothly pushed into the hexagonal inner peripheral surface of the socket.

The nut pushed into the socket is attracted to the magnet 13 provided in the socket and held without falling.

As described above, according to the nut delivery device according to the embodiment of the present invention, it is possible to reliably deliver and deliver the nut to the socket in the automatic tightening.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and in particular, the nut holding plunger and the socket guiding plunger have various shapes. It may be used, and for example, a ball or a member having a spherical tip may be configured to be pressed by a spring, and the number of them is not limited to 6 for a hexagon, and 3 may be used. However, it is not necessary that the arrangement positions of them also coincide with each other.
They may be arranged with their phases shifted from each other by 60 ° with respect to the polygon, and various modifications are possible within the scope of the matters described in the scope of claims for utility model registration.

[Effect of device]

As described in detail above, according to the nut delivery device of the present invention, the delivery and delivery of the nut to the socket in the automatic tightening of the nut to the bolt is performed automatically and reliably, which improves the efficiency of the tightening work. The effect is obtained.

[Brief description of drawings]

1 and 2 show a nut delivery device as an embodiment of the present invention. FIG. 1 is a side view thereof and FIG. 2 is a view of FIG.
FIG. 3 is a view taken along the arrow II-II, and FIGS. 3 and 4 show a socket used in the nut delivery device of the present invention. FIG. 3 is a side view thereof, and FIG. Is. 1 ... Nut receiving recess, 2 ... Cylindrical part, 3 ... Nut holder, 4 ... Bearing mechanism, 5 ... Nut pushing cylinder, 6 ... Nut pushing rod, 7 ... Socket receiving recess, 8 ... ... Plunger for holding nut, 9 ... Plunger for socket guide.

Claims (1)

[Scope of utility model registration request] 1. A nut holder having a nut accommodating recess formed at one end and a cylindrical portion at the other end, a bearing mechanism for rotatably supporting the nut holder through the cylindrical portion, and the bearing. A nut push-out cylinder disposed adjacent to the mechanism, and a nut push-out rod that is mounted on the cylinder and coaxially fits in the cylindrical portion and can push out the nut in the nut-holding concave portion. A plurality of nut holding plungers that are provided adjacent to the recesses and that are provided in the socket receiving recesses and that are arranged on the inner peripheral portion of the nut receiving recesses and that can respectively contact the polygonal outer peripheral surface of the nut, A plurality of socket guide plungers are provided which are arranged on the inner peripheral portion of the socket receiving recess and can respectively contact the polygonal outer peripheral surface of the socket. The nut holding plunger and the socket guiding plunger are relatively positioned and arranged so that the socket entering the socket receiving recess can be aligned with the nut in the nut receiving recess. A nut delivery device characterized in that