JPH0452184Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a headed bar supply device that automatically aligns and supplies headed bars (for example, screws, rivets, etc.).

2. Description of the Related Art A conventional seed-headed bar supplying apparatus of this type has a structure as shown in FIG. 3, as shown in, for example, Japanese Patent Publication No. 54-14392.

That is, when the rotating drum 4, which is rotatably supported by the main body 1 and rotated by the motor 2 via the driving roller 3, rotates in the forward direction 5, the roller that is in contact with the inner ring surface in the circumferential direction of the rotating drum 4 rotates in the forward direction 5. 6
rotates. Moreover, since the roller 6 is fixed to the impeller shaft 7, the impeller shaft 7 also rotates.

A pair of gears are rotatably supported on the impeller shaft 7 above the chute 8 and have serrated teeth projecting in the radial direction formed at an interval larger than the head diameter of the headed bar to be aligned. An impeller 10 having portions 9 provided at both ends of the circumference rotates, and the headed bar material 11 flowing in an irregular manner over the chute 8 is thrown away and removed. On the other hand, headed bars 12 were flowing in a regular alignment.
passes through the lower part of the impeller 10 and the chute 8
is supplied below.

Problems to be Solved by the Invention However, with such a structure, when the rotating drum 4 stops, the rotating drum 4 moves in the opposite direction due to the dead weight of the headed bar 14 accumulated in the rotating drum claw 13. Rotate to 15. In addition, the impeller shaft 7 driven by the rotating drum 4 and the gear section 9 attached to the impeller shaft 7 are also rotated in reverse, causing the problem that the misaligned headed bar 11 gets stuck in the gear section 9.

Therefore, the present invention prevents the impeller shaft from following when the rotating drum is reversed, prevents jamming in the gear portion, and enables smooth startup of the headed bar supply device.

Means for Solving the Problems In order to achieve the above object, the present invention provides a through hole through which the impeller shaft passes through a one-way clutch for regulating the direction of rotation of the impeller shaft.

Effect The effect of this technical means is as follows.
That is, when the rotary drum is rotating in the forward direction, both the impeller shaft and the gear rotate normally, the bars with misaligned heads are removed, and the bars with normally aligned heads pass through and are supplied. Further, when the rotating drum rotates in the opposite direction, the one-way clutch is activated, and the impeller shaft and gear portion do not rotate, thereby preventing the gear portion from getting wedged in the misaligned headed bar.

As a result, the headed bars can be smoothly aligned and fed.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. Note that the same parts as those in the conventional example shown in FIG. 3 are given the same numbers, and the description thereof will be omitted.

FIG. 1 shows an impeller section in an embodiment of the present invention. In FIG. 1, reference numeral 16 denotes an impeller bracket, which is fixed to the main body 1. Reference numeral 17 denotes an arm which is rotatably supported by the impeller bracket, and the impeller shaft 7 is attached to the tip of the arm via a bearing 18 and a one-way clutch 19 so as to be rotatable in only one direction. 7
The tip of the impeller 10 is pressed against the rotating drum 4 via the roller 6 by a spring 20, and is fixed to the impeller shaft 7, the impeller 10 fixed to the impeller shaft 7, and the impeller 10 by the rotation of the rotating drum 4. Gear part 9
is rotated, and the misaligned headed bar 11 is removed by the gear section 9.

FIG. 2 shows a sectional view of the one-way clutch, and the outer ring 21 of the one-way clutch is connected to the arm 1.
7 by press fitting. The impeller shaft 7 is A
When rotated in the direction, the rollers 22 move away from the outer ring cam surface 23 and the impeller shaft 7 rotates relative to the arm 17. When the impeller shaft 7 attempts to rotate in the direction B, the spring 25 supported by the retainer 24 causes the rollers 22 to advance to the engagement position with the outer ring cam surface 23.
Due to the wedge action between the outer ring cam surface 23 and the impeller shaft 7,
The rotation of the impeller shaft 7 is stopped.

As described above, according to this embodiment, by using a one-way clutch in the bearing part of the impeller shaft, even if the rotating drum is reversed due to the weight of the headed bar, the impeller shaft and gear part will not be reversed. This prevents the headed bar from getting caught in the gear part, and enables smooth feeding of the headed bar.

Effects of the Invention As is clear from the above embodiments, the impeller reversal prevention device for the headed bar supply device of the present invention has a one-way clutch provided in the through hole through which the impeller shaft passes through to regulate the direction of rotation of the impeller shaft. With this configuration, it is possible to prevent the headed bar from being caught in the impeller portion and to smoothly supply the headed bar.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view of an impeller section in an embodiment of the present invention, Fig. 2 is an enlarged sectional view of a one-way clutch section, and Fig. 3 is a perspective view of a conventional headed bar supply device. It is. 4... Rotating drum, 7... Impeller shaft, 8... Shute, 9... Gear section, 10... Impeller, 17...
...Arm, 19...One-way clutch, 22...Roller, 23...Inner ring cam surface, 25...Spring.

Claims (1)

[Scope of utility model registration request] a main body part, a rotating drum part rotatably supported by the main body part to store and supply the headed bar material, a chute that receives the headed bar material supplied from the rotating drum part and sends it downward; An impeller provided on both sides of the circumference with a pair of gear parts formed at a distance larger than the head of the headed bar whose serrated teeth are to be arranged so as to protrude upwardly and in the radial direction. an impeller shaft that is supported in an axial center hole of the impeller and has one end pressed against the rotating drum to transmit the rotational force of the rotating drum; and a through hole through which the impeller shaft passes through the main body. An impeller reversal prevention device for a headed bar supply device, comprising: an arm pivotally supported at a portion thereof, and a one-way clutch provided in the through hole for regulating the rotational direction of the impeller shaft.