Screw supplier

Abstract

The invention provides a screw supplier, which can be used in large-scale screws with various sizes and shapes, has universality, can form a firm structure by a comparatively simple composition, and has easy maintenance. The screw supplier parallelly and horizontally arrange a pair of arrangement rollers on the upper part of the storage part for storing screws, wherein opposite spiral helical flutes are provided on the external circumstance surface of the pair of arrangement rollers, the helical flutes are in U shape with wide width, less depth and square edges, the total width of the opposite helical flutes is lower than the diameter of the bar shape screw thread part of the supplied screws. In addition, brush components are provided at the upside of the storage part upstream side of the arrangement rollers, the brush components span nearly total width of a pair of arrangement rollers in the horizontal direction, and the lower front end of the brushes configured into brush components is located at vicinity of the height of the couched screws.

Description

technical field [0001] The present invention relates to a screw supply device for arranging and discharging a predetermined number of screws such as screws, nuts, tacks, and rivets. Background technique [0002] Conventionally, as such a screw feeder, there has been provided a screw feeder that is installed on a chassis, has a storage portion for accommodating a plurality of screws, and provides a pair of rotating rollers from the inside of the storage portion to the outside. , and opposite helical grooves are provided on the rollers, the threaded portions of the screws are sandwiched between the helical grooves of a pair of rollers, and a predetermined number of screws are sent out to the outside (Patent Documents 1 to 3). [0003] For example, the technique of Japanese Patent Application Laid-Open No. 1-123622 of Patent Document 1 proposes a device in which a small portion of a conical member is sandwiched between a pair of rollers that move obliquely, and supplied to the ...

AI Technical Summary

Problems solved by technology

[0005] Most of the screw supply devices for supplying screws in the above-mentioned known technology are used for mounting small electronic component screws for mounting printed circuit boards on the frame, and if they supply thick screws with a diameter of 7 mm or more, To arrange the spiral grooves, it becomes a large-scale device, and there is a problem that parts such as screws are blocked between the spiral grooves.

In addition, since part of the supply part is sandwiched between the roller and the spiral groove provided on the shaft to support, there is a problem of lack of versatility.

[0006] There is also the following problem: when the length of the bar-shaped thread portion of the screw member becomes more than the diameter of the conveying roller, its lower part will be below the roller and cannot be conveyed.

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