JPH11254880A - Notch direction aligning device for part with notch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To align securely the notch direction of a part with a notch and an inclined section on its end. SOLUTION: A device is provided with a positioning pin 12 for rotating a part together with in the state that the pin is inserted into a notch 2 of the part or in the state that the pin is brought into contact with an inclined section by the friction force stronger than the friction force of a press piece 6 with the part. In that case, the device is provided with a first rotating positioning machine setting the rotating angle of the positioning pin 12 by 360 deg. or more and a second rotating positioning machine of the same structure with the first rotating positioning machine and setting the rotation angle smaller than that of the first machine so that the positioning pin 12 is brought into contact with the smooth end face of the part 1 rotated by the positioning pin 12 of the first rotating positioning machine at the time of starting the rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component having a notch, for example, a component such as a barrel of a writing instrument provided with a notch for attaching a clip, and a component such as a clip attached to the notch. In addition, the present invention relates to an aligning device for aligning the direction of the notch.

[0002]

2. Description of the Related Art FIGS. 1 and 2 show a notch of a cylindrical part 13 as shown in FIGS. 3 and 4, that is, a cylindrical part 13 having a notch 2 at one end in the circumferential direction. 2 shows a conventional device for aligning the two directions. As shown in the figure, the cylindrical component 13 has an end opposite to the one end provided with the notch 2 and is held by the transport piece 4. The transport frame 4 is transported intermittently by a chain or the like. The transfer piece 4 includes a pressing piece 6 that comes into contact with the side surface of the cylindrical component 13 by the force of the spring 5.
The rotation of the cylindrical component 13 is braked by the friction with the holding member 6. A rotation positioning machine 7c is arranged on an extension of the end of the cylindrical part 13 on the side where the notch 2 is provided.
This rotary positioning machine 7c is composed of a drive shaft 8, a rotary piece 9, a spring 11, and a positioning pin 12. The drive shaft 8 is a cylindrical component 1 such as an air cylinder.
3 can be advanced and retracted, and can be rotated by a rack and pinion mechanism or the like. The rotary shaft 9 is integrally mounted on the drive shaft 8 so as to rotate integrally with the drive shaft 8 and to be slidable by a required distance in the front-rear direction. The rotating piece 9 is constantly pushed forward by the spring 11. The rotating piece 9 has a cylindrical part 13 at the front end.
Has an insertable cylindrical portion 10, and a positioning pin 12 that can be fitted into the cutout 2 of the cylindrical component 13 is protruded at one circumferential position on the inner surface of the cylindrical portion 10.

When the drive shaft 8 moves forward, the end of the cylindrical part 13 is inserted into the cylindrical part 10 of the rotary piece 9. Then, the position of the notch 2 of the cylindrical part 13 and the positioning pin 1
When the position coincides with the position 2, the positioning pin 12 fits into the notch 2 as it is, but when the position does not match, the positioning pin 12 comes into contact with the smooth end face 14 that has come off from the notch 2 of the tubular part 13, It is pressed by the force of the compressed spring 11. The frictional force between the smooth end surface 14 of the cylindrical part 13 and the positioning pin 12 is set smaller than the frictional force between the pressing piece 6 and the cylindrical part 13. Therefore, when the rotating piece 9 rotates together with the drive shaft 8, the rotation of the cylindrical part 13 is suppressed by the pressing piece 6, and only the positioning pin 12 slides on the smooth end face 14 of the cylindrical part 13 and rotates. Become. The rotation angle of the drive shaft 8 is 400 °
The positioning pin 12 surely fits into the notch 2 of the tubular part 13 during the 360 ° rotation. When the positioning pin 12 is fitted in the notch 2, the rotation of the cylindrical component 13 cannot be suppressed by the holding piece 6, and the cylindrical component 13 is rotated by the positioning pin 12 until the notch 2 is oriented in a predetermined direction. Let me
The directions of the notches 2 are aligned. Thereafter, when the drive shaft 8 moves backward and the tubular part 13 comes out of the rotary top 9, the tubular part 13 is transferred to the next assembling step by the transfer top 4.

[0005] As shown in FIGS. 5 and 6, when the inclined part 3 is present together with the notch 2 at one end of the tubular part 1, the orientation of the notch 2 may not be aligned with the above-described device. . That is, when the drive shaft 8 moves forward and the end of the cylindrical part 1 is inserted into the cylindrical part 10 of the rotary piece 9, as shown in FIG. 3. When the positioning pin 12 comes into contact with the inclined portion 3 as described above, when the rotary piece 9 rotates, the pressing piece 6 and the cylindrical part 1 are rotated.
The frictional force between the positioning pin 12 and the inclined portion 3 is larger than the frictional force between the positioning pin 12 and the notch 2.
Even if the cylindrical part 1 is not fitted in the
2, the stop position of the positioning pin 12 (the same as the alignment direction of the notch 2) and the position of the notch 2 do not match.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a device which can reliably align the direction of the notch even if the component has a notch and an inclined portion.

[0006]

SUMMARY OF THE INVENTION A notch direction aligning device for a notched component according to the present invention solves the above-mentioned problem, and has a notch 2 and an inclined portion 3 provided at one end. A pressing piece 6 that contacts the side surface of the component 1 to brake the rotation of the part 1 and a smooth end face 14 other than the notch 2 or the inclined portion 3 at one end of the component 1 rubs the pressing piece 6 with the component 1. The part 1 slides on the smooth end face 14 without rotating due to contact with the frictional force lower than the force, but the part 1 is fitted into the notch 2 at one end of the part 1 or the inclined part 3
In a state where the pressing piece 6 and the component 1 are in contact with each other with a frictional force higher than that of the component 1, the positioning pin 12 for rotating the component 1 together is provided, and the rotation angle of the positioning pin 12 is set to 360 ° or more. First set rotary positioning machine 7a
And the structure is the same as that of the first rotary positioning machine 7a.
The rotation angle is set to 1 so that the positioning pin 12 comes into contact with the smooth end surface 14 of the component 1 rotated by the positioning pin 12 of the first rotary positioning machine 7a at the start of rotation.
Second rotary positioning machine 7b set smaller than the first rotary positioning machine
And a configuration characterized by having the following.

[0007]

FIG. 8 to FIG. 13 show an embodiment of the present invention. As shown in FIG. 8, the cylindrical component 1 provided with the notch 2 and the inclined portion 3 at one end is held at the other end by the transport piece 4. The transport frame 4 has the same structure as that described in the above-described conventional example.
The presser piece 6 for braking the rotation of the cylindrical part 1 with the force of (2) is attached (see FIG. 4). On the extension of the other end of the cylindrical part 1 on the side where the notch 2 and the inclined part 3 are provided, a first rotary positioning machine 7a having the same structure as that described in the above conventional example is arranged. That is, the rotary positioning machine 7a is provided with a drive shaft 8 that can move forward and retreat toward the tubular part 1 and can also rotate, and rotates integrally with the drive shaft 8 and slides a required distance in the front-rear direction. A rotating top 9 having a cylindrical portion 10 which can be freely assembled and into which the end of the cylindrical part 1 can be inserted at its front end, a spring 11 for constantly pushing the rotating top 9 forward, and a cylindrical portion 10 of the rotating top 9 Positioning pin 12 projecting from the inner surface of the
And is constituted by. The rotation angle of the positioning pin 12 of the first rotary positioning machine 7a is set to 400 °. In addition, unlike the conventional example, the alignment device of the present invention includes a second rotary positioning machine 7b in addition to the first rotary positioning machine 7a. This second rotary positioning machine 7b has the same structure as the first rotary positioning machine 7a, but the rotation angle of the positioning pin 12 is set to 270 °. The positioning pins 12 of the second rotary positioning machine 7b and the first rotary positioning machine 7a
Although the position at the time of rotation stop is the same, the position at the start of rotation is naturally different because the respective rotation angles are different as described above. That is, since the rotation angle of the first rotary positioning machine 7a is 400 ° as described above, the position when the rotation of the positioning pin 12 is stopped is 40 ° ahead of the position when the rotation is started, and Since the rotation angle of the rotary positioning machine 7b is 270 ° as described above, the position of the positioning pin 12 at the start of rotation is 90 ° ahead of the position at the stop of rotation in the rotation direction. The rotation angle of the positioning pin 12 in the second rotary positioning machine 7b and the position at the start of rotation determined by the rotation angle differ depending on the size of the range of the inclined portion 3 of the tubular part 1. That is, the reason why the rotation angle of the positioning pin 12 of the second rotary positioning machine 7b is set to 270 ° in this embodiment is that the inclined portion 3 of the tubular part 1 extends from the position of the notch 2 to a range of 90 °. The rotation angle is reduced if the range is widened, and conversely, if the range of the inclined portion 3 is narrowed, the rotation angle is increased. That is, the rotation angle of the positioning pin 12 of the second rotary positioning machine 7b is different from that of the cylindrical part 1 rotated by the first rotary positioning machine 7a. 12 is set so as not to contact the inclined portion 3 at the start of rotation but to contact the smooth end face 14.

In the aligning apparatus of the present invention, first, the notch 2 is aligned with the first rotary positioning machine 7a in the same manner as in the above-described conventional example. A similar alignment operation is performed by the second rotary positioning machine 7b. As shown in FIG. 9, when the positioning pin 12 of the first rotary positioning machine 7a starts rotating, the inclined portion 3 is rotated.
As shown in FIG. 10, when the rotation of the positioning pin 12 is stopped, the orientation of the notch 2 fails to be aligned as described above. 9 to 13, the direction of arrow A is the direction in which the notches 2 are to be aligned. However, as shown in FIG. 11, the positioning pin 12 of the second rotary positioning machine 7b always comes into contact with the smooth end face 14 of the tubular part 1 at the start of rotation, and the rotating part does not rotate the tubular part 1 itself. After sliding only on the smooth end face 14, the cylindrical part 1 is fitted into the notch 2 and rotated to a predetermined position. As shown in FIG. 12, when the rotation is stopped, the direction of the notch 2 is changed. Alignment in a predetermined direction can be ensured. When the alignment work by the first rotary positioning machine 7a is successful, as shown in FIG. 13, the positioning pins 12 of the second rotary positioning machine 7a
At the start of rotation, it comes into contact with the smooth end surface 14 of the tubular part 1, so that the tubular part 1 is rotated by itself without rotating at all and returns to the position of the notch 2 positioned.

[0009]

The present invention is as described above. By providing two rotary positioning machines 7a and 7b, the notch 2
In addition to this, there is an effect that even the parts provided with the inclined portions 3 can surely align the directions of the notches 2. Further, the second rotary positioning machine 7b can perform the alignment work regardless of the success or failure of the alignment by the first rotary positioning machine 7a, that is, detects the success or failure of the alignment by the first rotary positioning machine 7a. Since there is no need to control the rotation angle and operation, expensive detection and control devices are not required, and a drive source can be shared with the first rotary positioning machine 7a by using a transmission element such as a gear. Therefore, there is an advantage that the cost of the apparatus can be kept low.

[Brief description of the drawings]

FIG. 1 is a plan view of a conventional device.

FIG. 2 is a cross-sectional view taken along line II of FIG.

FIG. 3 is a side view of a component having a notch.

FIG. 4 is an end view of a component having a notch.

FIG. 5 is a side view of a component having a notch and a slope.

FIG. 6 is an end view of a component having a notch and a slope.

FIG. 7 is a side view showing a state in which a positioning pin is in contact with an inclined portion of the tubular component.

FIG. 8 is a plan view of the apparatus according to the embodiment of the present invention.

FIG. 9 is an end view showing a state in which a positioning pin of a first rotary positioning machine is in contact with an inclined portion of a tubular part at the start of rotation.

FIG. 10 is an end view showing a state in which the positioning pins of the first rotary positioning machine fail to align notches when rotation stops.

FIG. 11 is an end view showing a state in which a positioning pin of a second rotary positioning machine is in contact with a smooth end surface of a cylindrical part at the start of rotation.

FIG. 12 is an end view showing a state in which a notch has been successfully aligned when a positioning pin of a second rotary positioning machine stops rotating.

FIG. 13 is an end view showing a state in which the positioning pin of the second rotary positioning machine contacts the inclined portion of the cylindrical component at the start of rotation after the notch has been successfully aligned by the first rotary positioning machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical part 2 Notch 3 Inclined part 4 Transfer piece 5 Spring 6 Holding piece 7a Rotary positioning machine 7b Rotary positioning machine 7c Rotary positioning machine 8 Drive shaft 9 Rotating piece 10 Tubular part 11 Spring 12 Positioning pin 13 Cylindrical part 14 Smooth End face

Claims (1)

[Claims] 1. A pressing piece (6) that contacts a side surface of a component (1) provided with a notch (2) and an inclined portion (3) at one end to brake the rotation of the component (1), and a notch (2) or an inclined portion at one end of the component (1). In this case, the pressing member 6 contacts the smooth end face 14 other than the part 3 with a frictional force smaller than the frictional force of the part 1 to rotate the part 1 without rotating the part 1.
In the state fitted in the notch 2 at one end or the state where the inclined piece 3 is in contact with the pressing piece 6 with a frictional force stronger than the frictional force of the part 1, there is a positioning pin 12 for rotating the part 1 together. Then, the rotation angle of the positioning pin 12 is set to 3
A first rotary positioning machine 7a set at 60 ° or more;
The structure of the first rotary positioning machine 7a is the same as that of the first rotary positioning machine 7a, and the positioning pin 12 comes into contact with the smooth end face 14 of the component 1 rotated by the positioning pin 12 of the first rotary positioning machine 7a at the start of rotation. And a second rotation positioning machine 7b having a rotation angle set smaller than the first rotation position as described above.