JPH01145918A - Screw supplying device - Google Patents

Abstract

PURPOSE:To contrive stable supply by taping a band-shaped long material with screws at a prescribed spacing, forming an aggregate of screws, and provid ing a transport path with a groove for escape of a leg which protrudes at the undersurface of the aggregate. CONSTITUTION:At a taping 8 screws 11 are held at a prescribed spacing. The leg of each screw 11 is held protruding at the bottom of the taping 8. An escape groove 13 is formed on a taping transport path 10 so as to admit the legs of the screws 11 protruding at the taping 8. Accordingly screws with short legs compared to the leg dia. or ones with small leg dias. can be supplied with stable pitch feed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a screw supply device for screw tightening, and particularly to a screw component supply device.

As conventional technological products have become lighter, thinner, shorter and smaller, the screws that fasten these products have also become more precise and smaller. In order to perform automatic tightening work of screws, a screw parts supply device is generally used (1) a holer having a scraping plate for separating and aligning the screws, and an incline for aligning and stocking the screws coming out of the hopper. (2) A device consisting of a rotating or vibrating screw that separates and aligns the screws, a linear feeder that aligns and stocks the screws coming out of the hopper, and an escape. An example of a device comprising the above-mentioned conventional example (1) having a scooping plate and an inclined chute will be described below with reference to the drawings. FIG. 3 and FIG. 4 are diagrams showing an outline of the screw feeding device. Reference numeral 1 denotes a meniscus that swings around a fulcrum pin 3 using a motor 2 as a driving source. 4 is a hopper for stocking screws. Reference numeral 6 denotes a gate that allows the screws scraped up by the meniscus 1 to pass only in the correct direction, and scrapes the other screws into the hopper. Reference numeral 7 is a chute that feeds and aligns screws with correct directionality to the tip, and reference numeral 6 is an upper guide that prevents the screws from coming off upward. The operation of the screw component supply device configured as described above will be explained below. First, the meniscus 1 swings in the hopper 4 about a fulcrum pin using the motor 2 as a drive source.

The upper part of the meniscus 1 has a concave groove, and when the meniscus 1 swings, it scoops up the screw, and the leg of the screw enters the concave groove, passes through the gate 5 in a stable state, and shoots. 7
and the upper guide 6.

When scooped up by the meniscus 1, screws whose legs do not fit into the concave grooves flow on the meniscus 1, but are scraped into the hopper by the gate 5 and are not lined up in the chute 7. ing.

Problems to be Solved by the Invention However, in the screw component supply device configured as described above, when the screw leg length is shorter than the zero leg diameter, since the center of gravity is on the screw head side, the concavity of the meniscus 1 It is difficult for the leg of the screw to enter the groove, and it is not separated and aligned on the chute T. It is still difficult for screws with small leg diameters to enter the concave grooves of the meniscus 1. Another problem is that it is difficult to adjust the clearance at the transfer portion to the chute 7, making separation and alignment difficult.

In view of the above-mentioned problems, the present invention provides a stable threaded parts feeding device by using a threaded parts assembly in which long threaded parts are taped at predetermined intervals and supplies the threaded parts at a predetermined pitch. be.

Means and Description for Solving the Problems In order to solve the problems, the threaded parts supplying device of the present invention has a screw leg part protruding from the lower surface of the threaded parts assembly into a conveyance path for transporting the threaded parts assembly. It is equipped with a structure in which a concave groove is provided.

Effects of the Invention The present invention has the above-described configuration, and instead of aligning and separating screws in the past by balancing screws, it is possible to create a feeding device equipped with a conveying section that can stably pinch-feed from an assembly of screw parts made into a taping structure. By doing so, we can ensure a stable supply of all kinds of threaded parts, including those with unbalanced threads and precision machine screws.

EXAMPLE Hereinafter, a screw component supply device according to an example of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a threaded component supply device according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a concave groove portion of a taping conveyance path in the same embodiment. In FIG. 1, an assembly of eight spring screw parts, that is, taping, extends from a reel state to an escape portion 9 at the tip. 1o is a taping conveyance path, and as shown in FIG. 2, a concave groove is provided for allowing the screw leg protruding from the bottom of the taping to escape. The operation of the screw component supply device configured as described above will be described below with reference to FIGS. 1 and 2.

A threaded parts assembly 8 in which long threaded parts are taped at predetermined intervals is wound into a reel and attached to the present supply device. The leading end of the taping passes through the taping conveyance path 1o of this device and reaches the escape section 9, where it is separated into pieces and the threaded parts 11 are supplied. Screw parts 11
is supplied at a predetermined pitch through feeding holes 12 provided at predetermined intervals in the taping 8, and the screw leg protruding from the bottom of the taping 8 is released into the taping conveyance path 1Q through the concave groove 1.
3, the feed is not obstructed and is stably supplied.

6 Heh.

As described above, according to this embodiment, it is possible to stably supply pitch feed 9 to all types of screw parts, such as screws with shorter leg lengths than the zero leg diameter and screws with small expansion diameters. .

As described above, according to the present invention, screws can be stably supplied to predetermined positions. In particular, a screw parts assembly with a taping structure is effective for supplying screws with short leg lengths and screws with small expansion diameters compared to the diameter of the screw legs, and at the same time, it is easy to replenish and replace screw parts. What you can do is also effective.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a threaded component supply device according to an embodiment of the present invention, FIG. 2(A) is a perspective view of the same essential part, FIG. FIG. 4 is a side view of a conventional screw component supply device. 1... Meniscus, 2... Motor, 3...
...Fulcrum pin, 4...Hopper, 5...
Gate, 6... Upper guide, 7... Nut, 8... Taping, 9... Escape part, 10... Taping conveyance path , 13・
...7 heh/concave groove.

Claims (1)

[Claims] (1) A threaded parts assembly in which a plurality of recesses, protrusions, or notches for threaded parts are provided in a long strip material, and threaded parts or screw heads are arranged in these recesses, protrusions, or notches. , a screw parts feeding device that supplies screw parts at a predetermined pitch, characterized in that a concave groove is provided in a conveyance path capable of transporting the screw parts assembly to allow the screw legs protruding from the lower surface of the screw parts assembly to escape. Screw parts feeding device.