DE3124846A1 - Retaining apparatus for the magazines to be arranged on a shaking screen of a longitudinal conveyor - Google Patents

Abstract

The magazines for the feeding of electronic components have hitherto been retained on the shaking screen of a longitudinal conveyor by mechanical clamping. According to the invention, rapid, effortless and wear-free exchange of the magazines (11) is achieved by a method whereby the magazines are retained on the shaking screen (1) by magnetism. Preferably, the shaking screen (1) is coated with magnetized rubber (12) onto which the magazines can be placed with a soft iron plate (14) underneath them. <IMAGE>

Description

Holding device for one on a vibrating table

Longitudinal conveyor arranged magazines The invention relates to a holding device! for those arranged on a vibrating table of a longitudinal conveyor Magazines for feeding electronic components, in particular semiconductor chips Such holding devices are required to have the magazines quickly and easily are interchangeable, i.e. that an empty magazine can be removed as quickly and easily as possible a filled one can be replaced. 'Previously, the magazines were on the vibrating table held by mechanical clamping. These clamping devices must be attached to the magazines be adapted accordingly, so that when using other magazine sizes, the Clamping devices must be adapted according to these magazines.

This conversion of the clamping devices is relatively time-consuming. In the known mechanical clamping devices there is also the risk that the magazines' do not lie exactly on the vibrating table, which leads to disruptions in the feed which can cause parts.

The invention is based on the object of providing a holding device of To make the type described in such a way that a fast, effortless and Wear-free replacement of the magazines is made possible. This is done according to the invention achieved in that the magazine is held on the vibrating table by magnetic force are. This enables magazines of any width to be placed without any Conversion work.

The vibrating table is preferably covered with a magnetic rubber the magazines made of non-magnetic material and lined with a soft iron sheet can be placed. In this way it is ensured that the magazine covers the entire surface rest on the conveyor table, which results in improved conveying properties. It is advantageous that, according to a further proposal, the position of the magazine on the The vibrating table is secured by attaching locating pins. Here the Fixing pins can be designed and arranged in such a way that the magazines are fixed in place takes place on the vibrating table both in the conveying direction and perpendicular to it.

Based on the drawing, in which an exemplary embodiment is shown is, the invention is explained in more detail.

They show: FIG. 1 a side view of a longitudinal conveyor and FIG 2 is a perspective view of the vibrating table according to the invention.

The longitudinal conveyor shown in Figure 1 has a vibrating table 1, which is fixed on a box-shaped part 2 with the aid of the screws 3. The box-shaped part 2 contains an electromechanical one in a manner known per se Vibrating device, which via an electrical lead 3 with a corresponding Control device is connected, with which the amplitude and frequency of the vibrations and thus the conveying speed can be specified. The box-shaped part 2 is about, vibrating elements 5 mounted on a plate 6, which with the help of Threaded pins 7 on a bracket 8 is adjustable. About the threaded pins 7 a height and inclination adjustment of the vibrating table 1 can be made. The console 8 is with the help of screws 9 on a frame or Machine part can be fastened. The conveying direction of the longitudinal conveyor is indicated by an arrow 10 indicated. For feeding electronic or other components are on the Vibrating table 1 arranged one or more magazines in which the electronic to be fed Components are guided.

FIG. 2 shows only the vibrating table in a diagrammatic representation 1 according to Figure 1- on which a magazine 11 is placed. The magazine 11 is preferably from an extruded profile made of aluminum, which in cross section has the shape of the to be conveyed electrical components is adapted. On the vibrating table 1 are preferably a plurality of magazines 11 arranged, but only one of which is shown. According to the invention is the attachment of the magazine or magazines 11 on the vibrating table 1 by magnetic force. For this purpose, the vibrating table 1 is covered with a magnetic rubber 12 provided, which is glued to the vibrating table 1 @. The magazines 11 exist made of non-magnetic material, preferably aluminum, attached to the bottom with a soft iron sheet 14, verse'hen? ' are. To fix the position of the magazines 11, the vibrating table is provided with locating pins 13, either with corresponding Recesses 15 or lateral stops 16 on the magazines 11 interact. The fixing pins 13 are preferably in corresponding holes in the vibrating table 1 can be inserted to @ be able to use magazines of different shapes and sizes.

4 claims 2 figures

Claims (4)

P a t e n t a n s p r ü c h e 1. old device for the on one Vibrating table of a longitudinal conveyor arranged magazines for feeding electronic Components, in particular semiconductor chips, as a result, that the magazines (11) are held on the vibrating table (1) by magnetic force. 2. Holding device according to claim 1, characterized in that g e -ke n n z e i c h n e t that the vibrating table (1) is covered with geiem magnetic rubber (12) on the the magazines (11) made of non-magnetic material underneath a soft iron plate (14) Material can be placed. 3. Holding device according to claim 1 or 2, d a d u r c h g e k e nn z e i h n e t that the position of the magazine (11) on the vibrating table (1) through Attachment of fixing pins 913) is secured. 4. Halt evorrichtung according to claim 3, d a d u r c h g e -k e n n z e i c h n e t that the fixing pins (13) are designed and arranged in such a way that the fixation of the magazines on the vibrating table (1) both in the conveying direction (10) as well as perpendicular to it.