JPS597549B2 - Natsutorinorenzokukiyoukiyusouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous nut feeding device for continuously feeding nuts such as nuts and nuts with washers to a working position in a certain direction. be.

This type of conventional continuous nut feeding device is equipped with a holding device that temporarily holds the nuts in front of the outlet at the end of the nut feeding chute, and the nuts fed from the chute are held in this holding device. The nuts are held stopped and then fed to the working position as a skewer to the operating rod that is inserted into the guide cylinder so that they can move up and down, so the nuts can be fed to the working position with a certain directionality. There are various drawbacks, such as the fact that the actuating rod must have a complicated shape and the descending speed of the actuating rod must be faster than the falling speed of the nuts.

The present invention was completed with the aim of providing a continuous supply device for nuts without the above-mentioned drawbacks, and the embodiments shown in the drawings will be described in detail below.

Reference numeral 1 denotes a cylindrical body with a canopy that is fitted into a guide cylinder 2 so as to be movable up and down, and an operating rod 4 having a permanent magnet 3 attached to the tip thereof is fitted into the cylindrical body 1 so as to be movable up and down. The actuating rod 4 is constantly pushed downward by a spring 5 inserted between its upper end and the canopy of the cylinder 1, and a through hole is provided in the middle of the actuating rod 4 in the radial direction. Both ends of the pin 1, which is inserted through the hole 6 and has both ends protruding, are loosely engaged with a long hole 8 formed through the cylindrical wall of the cylindrical body 1 in the axial direction, and are operated against the cylindrical body 1. The rod 4 is movable up and down over the length of the elongated hole 8, and one end of the pin 7 is further projected outside through the elongated hole 8 and is fitted into the guide tube 2 from the upper end to the lower part. The lower end of the vertical groove 10 is formed into a stepped portion 11 for stopping the lowering operation of the operating rod 4. The cylindrical body 1 can move up and down within the length of the vertical groove 10.

Reference numeral 12 is a nut supplying chute with a tip outlet 13 connected to the lower end opening of the guide tube 2, which temporarily holds nuts one by one facing the lower end opening of the guide tube 2. Nuts are aligned in a certain direction and continuously supplied to the holding member 14.

In the illustrated holding member 14, a receiving plate 19 is fitted to a guide rod 17 embedded in the outer case 16 via a spring 18 so as to be movable up and down. A support plate 15 whose proximal portion is loosely inserted into the outer case (-16) through the opening 20 on one side,
15, and the base portions 15'', 15'' of the support plates 15, 15 are pivotally supported on the opposing inner walls of the outer case 16, and the front portions 15', 15' of the support plates 15, 15 are supported. The chute 12 is placed facing the lower end opening of the guide tube 2 as described above.
The nuts (a) supplied from the front part 15', 15'
However, the holding member 14 is not limited to such a structure.

21 is a piston rod for raising and lowering the cylinder 1 operated by a cylinder 22 provided at the upper end of the cylinder 1, and 23 is a short cylinder having the same inner diameter as the guide cylinder 2 used for fixing the inner cylinder 9. Then, by loosening the nut 24, the cylinder body 1,
The operating rod 4 and the short cylinder body 23 can now be aligned, and 25 is a cap nut that is screwed onto the short cylinder body 23, and 26 is a cap nut that is fitted to the outer peripheral wall of the permanent magnet 3. It is a cylinder made of a magnetic material and is used to prevent the magnetic force of the permanent magnet 3 from being applied in the direction of the wall surface, and an actuating rod is provided on the outer peripheral wall of the cylinder 26 to protect the cylinder 26. A protective cylinder 27 having the same outer diameter as 4 is fitted.

Further, 28 is a mating member that is positioned and mounted on the positioning pin 30 of the lower fixed electrode 29 when used in a nut supply device of a spot welding device, and 31 is a mating member that is positioned on the positioning pin 30 of the lower fixed electrode 29.
This is the front end opening surface of the cylindrical body 1 having an angle according to the inclination of the guide tube 2 so that the front end opening is always parallel to the fixed electrode 29. As shown in FIG. 1, in this structure, nuts (
A) is fed onto the front part 15' of the support plate 15 of the holding member 14 for one nut, and when the cylinder 22 is operated in a state where it is temporarily held, the cylindrical body 1 is lowered and activated. The rod 4 is also lowered via the spring 5, but since the permanent magnet 3 is attached to the tip of the actuating rod 4, the nuts (A) are attracted to the permanent magnet 3 when the cylinder body is moved. 1 and the actuating rod 4 are lowered, the temporary holding of the nuts (A) by the holding member 14 is released, and the nuts (A) are inserted into the through hole 6 of the actuating rod 4, and one end is formed in the inner wall of the guide tube 2. Groove 1
The pin 7 that engages with the vertical groove 1
When it reaches the end of 0, the pin 7 hits the stepped part 11 and the actuating rod 4 does not descend any further, but at that time, the nuts (A) attracted by the permanent magnet 3 at the tip of the actuating rod 4 By positioning the lower fixed electrode 29 directly above the positioning pin 30, when the cylinder 1 is pressed with the cylinder 22, only the cylinder 1 is affected by the elastic force of the spring 5. The nuts (A), which are attracted to the permanent magnet 3 by the open end of the cylinder 1, are continuously lowered to the position shown by the dashed line in FIG. Dissociate from the magnet 3 and attach the screw hole of the nuts (a) to the lower fixed electrode 29.
The nuts (A) can be inserted into the positioning pin 30 of the nuts (A) without changing the initial direction of the nuts (A).
is supplied onto the mating member 28.

After the nuts (a) are supplied onto the mating member 28, if the cylinder 22 is operated in reverse to raise the rod 21, the cylinder 1 will be extended by the elastic force of the spring 5, contrary to the above. After the lower end of the hole 8 rises to the position where it comes into contact with the pin 7, both the cylinder body 1 and the actuating rod 4 rise to the initial position. One nut is placed on the holding member 14, and the same operation is repeated thereafter. As is clear from the description of the illustrated embodiment, the present invention has a lower end opening followed by a tip outlet 13 of a chute 12 for supplying nuts, and nuts fed from the tip outlet 13. A vertical groove 10 is formed in the inner wall of the guide cylinder 2 facing the holding member 14 for temporarily holding one piece from the upper end to the lower part, and a long hole 8 is formed in the middle part of the guide cylinder 2 in the axial direction. A transparent cylindrical body 1 is slidably inserted into the cylindrical body 1, and a cylinder 22 for lifting and lowering is provided at the upper end of the cylindrical body 1, and a pin 7 is provided in the cylindrical body 1 with one end reaching the vertical groove 10 through the elongated hole 8. is stretched across the middle part, and an operating rod 4 having a permanent magnet 3 attached to its lower end is slidably inserted into the operating rod 4, and a spring 5 is provided at the upper end of the operating rod 4 to press the operating rod 4 downward. Because it is,
It is a device that can easily and accurately feed nuts and the like supplied from a chute in a certain direction to the working position, has a simple structure, has few failures, and can be manufactured at low cost.It is an extremely important thing that it brings to the industry. It is.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is a partially cutaway front view shown in an operating state, and FIG. 3 is a view taken along the line A-A in FIG. 1. Figure 4 is also B-B
5 is a view taken along the line C--C, and FIG. 6 is a partially cutaway perspective view showing an example of the holding member. 1: Cylindrical body, 2: Guide tube, 3: Permanent magnet, 4: Operating rod, 5
: Spring, 7 Ripin, 8: Long hole, 10: Vertical groove, 12: Chute, 13: Tip outlet, 14: Holding member, 22: Cylinder.

Claims (1)

[Claims] 1 A holding member 1 that has a lower end opening connected with a tip outlet 13 of a chute 12 for supplying nuts and temporarily holds one nut supplied from the tip outlet 13.
A vertical groove 10 is formed in the inner wall of the guide cylinder 2 facing the guide cylinder 2 from the upper end to the lower part, and the guide cylinder 2 has a cylinder body 1 having a long hole 8 transparent therethrough in the axial direction in the middle part thereof, so that the cylinder body 1 can freely slide. A cylinder 22 for lifting and lowering is provided at the upper end of the cylindrical body 1, and within the cylindrical body 1, a pin 7 whose one end reaches the vertical groove 10 through the elongated hole 8 is stretched in the middle part, and a pin 7 is provided at the lower end of the cylinder 1. A continuous supply device for nuts, characterized in that an actuating rod 4 having a permanent magnet 3 attached thereto is slidably inserted therein, and a spring 5 is provided at the upper end of the actuating rod 4 to press the actuating rod 4 downward.