Device for fitting substrates with electric components

#The invention relates to a device for fitting substrates with electric components, the device having at least one positioning device for a fitting head which can be moved in two coordinate directions for handling the components.

#A device of this type has been disclosed, for example, by WO 9837744 A1. According to that document, the device has a linear transport having two fitting stations for the substrates. Between the two fitting stations, a beam-like carrier extends transversely to the transport direction of the substrates. Attached to the carrier on both sides are X-Y positioning devices which cover the fitting stations and the collecting points for the components. The positioning device comprises a longitudinal guide fixed to the carrier and provided with magnetic parts, along which an upright positioning arm provided with a coil part can be moved, on which a fitting head for handling the components can be moved. The positioning arm, anchored on one side, has a relatively great free length. Rapid acceleration processes and in particular braking processes lead to oscillations in the positioning arm, which are disruptive in particular when the fitting head is in its end region. During each collecting or fitting operation, these oscillations must first have decayed before these operations can be carried out.

#Feed modules for the components are lined up on both sides of the transport path in the direction of the positioning arms. Since the positioning arms must not become too long, the number of feed modules and therefore the multiplicity of components which can be provided are also limited.

#The invention will be explained in more detail in the following text using exemplary embodiments illustrated in the drawing, in which:

#FIG. 1 shows a schematic perspective view of a device for fitting substrates with electric components,

#FIG. 2 shows a partial section through the device according to FIG. 1,

#According to FIGS. 1 and 2, a chassis 1 of a device for fitting substrates 6 with electric components 15 comprises a cast basic body 2 and a plate-like carrier 3 which is fixed thereto and on which an X-Y positioning device 4 is mounted. Above the basic body 2, a conveying path 5 for the substrates 6 is led through the device, it being possible for said substrates 6 to be fitted with the components in fitting stations 7 of the conveying path 5.

#In plan view, the basic body 2 has a cross-like structure, in which a main leg extends parallel to the conveying path 5 and underneath the latter. A central leg extends transversely with respect to the transport direction in the central area of the main leg. At its ends, wall-like central supports 8 projecting upward and obliquely with respect to each other are cast on for the carrier 3. Provided at the ends of the main legs are end walls 9 which are attached in one piece and which, above the basic body 2, are widened to form end supports 10 for the carrier 3. Arranged in the corner regions between the legs of the basic body 2 are spaces for feed devices 11 for the components to be fitted. The upper sides of the feed devices 11 are at the same vertical level as the substrate 6.

#The plate-like carrier 3 is arranged at a distance above the conveying path 5. Mounted on its underside is the positioning device 4, which comprises a longitudinal guide 12 which is fixed to the underside of the carrier 3 and extends in the conveying direction, and a positioning arm 13 which is transverse thereto and which is displaceably mounted in the longitudinal guide 12. The latter is, for example, provided with magnetic parts which, together with a coil part belonging to the positioning arm 13, form a linear motor which drives the positioning arm.