SU996042A2 - Feeder - Google Patents

Description

(54) FEEDER

one

The invention relates to assembly work and is intended for use in various types of devices serving to feed fasteners to the assembly zone, and can be widely used in drilling and riveting machines for feeding and installing rivets into the holes, as well as providing a stop when a hole is formed. rivet in non-rigid parts such as panels.

A feeding device is known, which contains in the gun-hole a feeder mounted in the housing and a tubular tray inclined towards it with a cut-off device, as well as; centering jaws 1.

The disadvantage of this device is that when fasteners with a total length equal to or less than the diameter of the head are supplied, the phenomenon of part turning occurs, i.e. it turns over in the receiver channel and comes head forward, which makes it impossible to place the fastener in the assembled product.

According to the main author. St. No. 590067, a known feeder, comprising a housing within which a feeder is moved, having a groove, by means of which the operation of the shutter is controlled. Spring-loaded cams move in coaxially formed holes in the housing.

5 serving to precisely position the fastener relative to the axis of the hole in the bag. To feed the rivets from the hopper to the feeder, there is a tubular tray, under the output of which a spring-loaded slider is installed parallel to the tray in the body, which serves to prevent the rivet from turning over at the moment of its transition from the tubular tray to the channel of the feeder body 2.

Claims (2)

The disadvantage is that it often becomes necessary to process the hole, for example, from the side of the common thread, and insert the rivet from the side of the frame (the USG method — a secret closing head). In this case, it is impossible to use this device 6 of the drilling-20 riveting machine when machining the hole as a stop element, since the centering cams prevent the exit of the cutting tool, since the size of the sieve of the centering cams for normal operation must be less than the diameter of the rivet, and therefore less than the cutting diameter. his tool, forming a hole for the rivet. The purpose of the invention is the expansion of technological capabilities and increased reliability. The goal is achieved by the fact that the feeder containing a tubular tray mounted with a feeder and a tubular tray with a cutter inclined towards it, as well as centering cams in the form of cylindrical sliders and an additional spring-loaded slide, interacting with the feeder and installed in the housing under the outlet of the tubular tray parallel to the latter, is provided coaxially mounted on the feeder cylindrical pusher connected at one end to the drive of the feeder and interacting the other end with centering by their fists. On the pusher along the generatrix a groove is made, interacting with its surface with a cutter. FIG. 1 shows the feeder, the position when machining the hole; in fig. 2 - the same position when centering the rivet; in fig. 3 - the same position when inserting the rivet. The feeder includes a housing 1, inclined to which a tubular tray 2 is installed with a shut-off device 3. Inside the case I, a cylindrical pusher 4 is installed, interacting with centering cams 5. Coaxially and, inside the pusher 4, a feeder 6 is installed interacting with a spring-loaded spring 7 with a slide 8. The feeder 6 is driven In motion driven 9. Screws 10 and 11 restrict the movement of the pusher and the feeder 6, respectively. A groove 12 is formed on the pusher along the generatrix. The feeder operates as follows. When air is supplied to cavity B of drive 9, feeder 6 is kept from moving by screw II, and pusher 4 moves, spreads centering cams 5 and holds u) (in this position, making room for the output of the cutting tool (not shown).) sinks into the longitudinal groove 12 of the pusher 4, releasing the rivets located in the tubular tray 2. The rivets move against the stop into the pusher 4. After the hole has been machined, the rivet is supplied with air into the cavity A. As the feeder 6 rests against the spring-loaded slider 8, for displacing But a certain force is needed, the pusher 4 moves first, which releases the centering cams 5. The pusher 3 is pushed out of the groove 12 of the pusher 4 and again prevents the rivets from moving along the tubular tray 2, except for one, which falls into the feed channel and is centered by the cams 5. After the stop of the pusher 4 in the screw 10 is moved by the pressurized feeder 6 while the spring-loaded slider 8. At the end of the stroke of the feeder b, the rivet is inserted into the prepared hole. Air is fed into cavity B and the cycle repeats. The proposed feeder provides an emphasis and unimpeded exit of the cutting tool when machining the aperture, and can be used as a stop head when machining the aperture, which allows it to be widely used in drilling and riveting machines, while ensuring the reliability of setting the rivet using the PZG method setting that allows you to increase the performance of the machine 1.5-2 times. Claim 1. Inventor auth. St. No. 590067, characterized in that in order to expand technological capabilities and increase reliability, it is provided with a coaxially mounted pusher on a feeder connected to one end of the drive of the feeder and the other end interacting with the centering jaws. 2. A feeder according to claim 1, characterized in that a groove is formed on the pusher along the generatrix and interacting with its cutter on its surface. Sources of information taken into account in the examination 1. Exercise of assembly processes in instrument-making, part 11, Department of scientific and technological information on instrument-making, automation and control systems. M., 1967, p. 7, fig. 6 2. USSR author's certificate number 590067, cl. B 21 J 15/32, 1976 (prototype). .