JP2000225577A - Fastener separation equipment for connected fastener manufacturing equipment - Google Patents

Abstract

(57) Abstract: A screw 3 on a chute 1 is reliably separated and fed into a U-groove 20a of a rotary table 20 even when the rotation speed of the rotary table 20 increases. SOLUTION: A large number of U-grooves 20a provided along the circumferential direction of a circular table 20 are shaped so as to be inclined in the rotation direction of the circular table 20 and become wider outward in the radial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting fastener manufacturing apparatus for manufacturing a connecting fastener by inserting a fastener such as a screw or a nail into a connecting band made of plastic. And a fastener separating device for sequentially separating the fasteners into a U-shaped groove of a rotary table. Hereinafter, the fastening body will be described as a screw.

[0002]

2. Description of the Related Art A connecting screw in which a number of screws are inserted into a long plastic connecting band is widely used in, for example, a screw driving machine, a connecting screw driver and the like and is well known.

[0003] After the screws in a screw hopper provided above the screw insertion portion are aligned and sent out in a line by a feeder, a number of screws sent through a chute are transferred along the circumferential direction of the rotary table. After the screws in the U-groove after rotating the rotary table by a predetermined angle reach the screw insertion portion, the screws are sequentially discharged from the U-groove to be put into the holes of the plastic connecting band. Screw was inserted into

FIG. 2 shows an example of such a screw separating device. A large number of screws 3 sent from the chute 1 are sequentially separated and put into the U groove 2a of the rotary table 2,
The rotary table 2 rotates a predetermined angle in the counterclockwise direction to rotate the U-groove 2a.
When the screw 3 inside reaches the screw insertion part (not shown), the screw 3 is sequentially discharged from the U groove 2a and inserted into the connecting band (not shown). The screws 3 aligned on the chute 1
Is sent toward the rotary table 2 by the vibration of the chute 1 as is well known.

[0005]

In the above configuration, when the rotation speed of the rotary table 2 is increased, the separation and drop of the screw 3 from the chute 1 into the U groove 2a follows the rotation of the rotary table 2. And the screw 3 bites between the chute 1 and the U-groove 2a.
However, there was a problem that separation became impossible.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fastener separation apparatus which eliminates the above-mentioned disadvantages of the prior art and can reliably separate fasteners even when the rotation speed of the rotary table increases.

[0007]

The above object is achieved by forming the U-shaped groove in such a manner that the U-shaped groove is inclined in the rotating direction of the circular table and becomes wider toward the outside in the radial direction.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing one embodiment.

FIG. 1 shows a main part of a screw separating device according to the present invention.
Are formed in such a shape that they become inclined in the rotation direction and become wider toward the outside in the radial direction. Reference numeral 4 denotes a screw guide for preventing the leading screw 3 from entering the anti-rotation side of the U groove 20a when the leading screw 3 on the chute 1 is sequentially separated into the U groove 20a and starts to enter. It is provided so that the tip is located above and near the passage of the chute 1. That is, if the screw guide 4 is not provided, the leading screw 3 enters the counter-rotation side of the U-groove 20a, and when the screw 3 in the U-groove 20a moves counterclockwise with the rotation of the rotary table 2, the shoot There is a possibility that the rotary table 2 cannot be rotated due to the second screw 3 on 1. On the other hand, since the screw guide 4 is provided, the top screw 3 does not enter the counter-rotation side of the U groove 20a, and the U groove is substantially aligned with the second and subsequent screws 3 on the chute 1. 20a, the second screw 3 does not come into contact with the second screw 3 and the rotation of the rotary table 2 is not hindered. That is, the reliability of the screw separation can be further improved.

As a result, the U-groove 20a is
The screw 3 comes down smoothly due to the inclined surface of the U groove 20a, and the screw 3 does not bite between the chute 1 and the U groove 20a. Therefore, the rotation speed of the rotary table 20 can be increased, and the conventional separation speed has been increased from 1200 pieces per minute to 1500 pieces per minute or more.

[0011]

As described above, according to the present invention, the fastening member on the chute can be reliably separated into the U groove of the rotary table, and as a result, the rotation speed of the rotary table can be increased. As a result, it has become possible to improve the manufacturing speed of the connection fastener.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a fastener separation device of the present invention.

FIG. 2 is a plan view showing an example of a conventional fastener separation device.

[Explanation of symbols]

1 is a chute, 2 and 20 are circular tables, 2a and 20a are U grooves, and 3 is a screw.

Claims (1)

[Claims] 1. A chute and a fastener insertion portion are provided on one side and the other side of a circular table having a number of U grooves along a circumferential direction, and a number of fasteners sent from the chute are sequentially separated. Put in the U-groove and rotate the rotary table by a predetermined angle.
In the connecting fastener manufacturing apparatus for discharging the fastener when the fastener inserted into the groove reaches the fastener insertion portion and inserting the discharged fastener into the connecting band, the U-groove may be rotated in the rotation direction of the circular table. A fastener separation device for a coupling fastener manufacturing apparatus, characterized in that the fastener is inclined so as to become wider as going radially outward.