WO2001078481A1

WO2001078481A1 - Functional unit consisting of a base device and at least one additional device that can be connected thereto

Info

Publication number: WO2001078481A1
Application number: PCT/DE2001/001212
Authority: WO
Inventors: Friedrich Eschenweck; Klaus Hoffmann
Original assignee: Siemens Production And Logistics Systems Ag
Priority date: 2000-04-05
Filing date: 2001-03-30
Publication date: 2001-10-18
Also published as: DE10017000C2; DE10017000A1

Abstract

The aim of the invention is to automatically produce plug-in connections between a base device (1) and an additional device (2). The additional device (2) is pushed in an allocated corridor (3) towards a base device in a coarsely centred manner in two directions of co-ordinates until a feeding unit is released in the end position. Said feeding unit displaces a first positioning and coupling member (8) on the base device (1) and a second positioning and coupling member (9) in relation to one another. Said second positioning and coupling member (9) is mounted on the additional device (2) in a cardanical manner. The feeding unit guarantees exact opposite orientation by means of elements (12, 19; 13, 20) which engage with one another in a positive fit. The plug components engage with one another by means of said feeding unit once the movement has been carried out.

Description

description

Functional unit consisting of a base device and at least one additional device that can be connected to it.

The invention relates to a functional unit according to the preamble of claim 1.

Such a functional unit can consist, for example, in the automatic assembly of printed circuit boards with electrical components from the basic module of an automatic placement machine as the basic device and at least one component carriage, with several component carriages generally being assigned to the basic module. In order to accommodate the component carriages, the basic module has a corresponding number of component pick-up corridors into which the component carriages can be moved, roughly centering them in the X and Y directions.

The prepared printed circuit boards are guided through the basic module of the placement machine and, during their dwell time in the basic module, are equipped with components in the intended configuration, which are taken from a corresponding supply of different components on the component carriage or components and transferred to the printed circuit board in a precisely positioned manner. Before starting up the functional unit, electrical and pneumatic line connections must be made between the basic module and the component carriage. So far, this has been done by manually connecting the connecting lines.

This inexpensive construction has the disadvantage that the functional unit can be put into operation after the line connections have been made, even if a component carriage is not in its intended end position and e.g. B. with connected cables next to the basic dul stands. This is not allowed. Operation with all component carriages is prescribed in their end position within the assigned pick-up cores.

The invention has for its object to preclude the unauthorized start-up of the functional unit by a simple construction with safe operation and justifiable effort, if an additional device is not in its end position ensuring the proper operation, relative to the base device. This object is achieved by the invention according to claim 1. Advantageous developments of the invention are defined in the further subclaims.

This ensures that the plug connections are only closed when the basic device and any additional device assigned to it are in the prescribed end position with respect to one another. At the same time, each additional device is precisely aligned relative to the basic device in the X and Y directions. Since part of the connectors, d. H. the second positioning and coupling member is gimbaled, associated connector parts can always be brought exactly in parallel alignment to one another, so that the assigned connector parts of the plug connections can be brought into engagement with one another in the Z direction without problems and also held in this engagement position become. Since the manual production of the plug connections and thus the manual intervention in the area between the base device and the additional device is dispensed with, the invention - in particular in its preferred application according to claim 2 - also results in a significant improvement in personal protection.

The development according to claim 5 is suitable for, in a particularly simple manner, angular deviations between the U-shaped ones Correct the fitting and the stamp plate before the

Engage connector parts.

The invention is explained in more detail below with reference to an embodiment shown in the drawing.

FIG. 1 shows a schematic plan view of the basic module of an automatic placement machine for printed circuit boards with four component pick-up corridors, a component carriage being in its end position within the pick-up corridor assigned to it;

FIG. 2 shows the mutual assignment of the positioning and coupling elements arranged on the automatic placement machine and on the component carriage after the component carriage has been moved into its end position, but before the feed unit is activated; and

FIG. 3 shows a top view of the mounting of the positioning and coupling element arranged on the component carriage.

In FIG. 1, 1 denotes a basic module of an automatic placement machine, represented schematically by its outline, which is included in a production line for the assembly of printed circuit boards. The components required for the assembly of the printed circuit boards are held ready in a variable manner depending on the needs of the printed circuit boards to be manufactured on component carriages 2, for the positioning of which the basic module is provided with component pick-up corridors 3. In the example shown, the basic module is provided with four component pick-up corridors 3, a component carriage 2 being pushed into one of these component pick-up corridors 3 until it reaches its end position, in which, after the electrical and pneumatic line connections between the basic module 1 and the component carriage, have been made 2 is ready for use. The production line or the automatic placement machine may only be started up if if in all component pick-up corridors 3 the component trolleys 2 provided are connected ready for operation in their end position.

The component pick-up corridors 3 have lateral vertical guide surfaces 4 which interact with the component carriages 2 and by means of which the component carriages 2 which can be moved on the floor are roughly centered in two horizontal coordinate directions X and Y. When the component carriage 2 has reached its end position in the insertion direction X, it actuates a triggering device 5, which is arranged on the basic module 1 and is shown only schematically, in the form of a snap switch (depth stop), and thus opens a compressed air valve 6, whereby a cylinder (not shown) with compressed air serving as a feed unit is applied.

The cylinder presses a first positioning and coupling member, shown in the upper part of FIG. 2 and denoted overall by 8 and arranged on the basic module 1, vertically downward in a third coordinate direction Z via a piston. The arrangement is such that this first positioning and coupling member 8 is located in the area of the component pick-up corridor 3 and there at such a level that it is on the one hand below that for storing and transferring the components from the component carriage 2 into the Area of the basic module 1 serving functional area of the component carriage 2 and on the other hand above a second positioning and coupling element 9 arranged on the component carriage 2, which in turn is located on the component carriage 2 near the ground (approx. 10 to 20 cm above the ground) by means of a gimbal 18 (Fig. 3) is mounted.

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adjusts play-free width, the length of this end section corresponds at least to the insertion length required for the effective connection of the two plug parts of each plug connection for the electrical and pneumatic line connections to be produced between the basic module 1 and the component carriage 2.

These plug parts, not shown, are distributed identically on the underside of the stamp plate 11 and the opposite top of the base 15.

When the component carriage 2 is pushed into the component pick-up corridor 3 assigned to it up to the end position, it is roughly centered in the first coordinate direction X and the second coordinate direction Y.

When the first positioning and coupling element 8 is approached to the second positioning and coupling element 9, the guide pin 12 first runs into the receptacle 19 and forces the gimbal-suspended, U-shaped sheet metal part 14 into the position parallel to the stamp plate 11. Before the stamp plate 11 runs in between the two side walls 16, the guide bolts 13 first come into the region of the inlet sections 21 because of the above-mentioned distance, so that the sheet metal part 14 is pressed or rotated into a position in which the stamp plate 11 and the Bottom 15 are exactly congruent. This position is secured in that the guide bolts 13 are then free of play in the end sections 22 of the incisions 20. Then the stamp plate 11 can then be easily immersed between the side cheeks 16, the connector parts being exactly aligned with one another, so that the movement can be continued until the plug connections have been made effectively. The plug-in connection is securely maintained by the lowered first positioning and coupling member 8 until the component is removed. mentwagens 2 from its component pick-up corridor 3, the first positioning and coupling element 8 is raised again and the plug connection is released again.

Claims

claims

1. functional unit comprising a base device (1) and at least one additional device (2) which can be temporarily detachably connected to the base device (1), the base device (1) and the additional device (2) having associated electrical and / or pneumatic plug connections, and the additional device (2) on the base device (1) is assigned a guide corridor (3) into which the additional device (2) can be inserted in a first coordinate direction (X) to an end position while at the same time being roughly centered in a second coordinate direction (Y) is characterized in that a first positioning and coupling member (8) movable in a third coordinate direction (Z) is provided on the base device (1), that on the additional device (2) via a gimbal (18) a the first positioning and coupling member (8) for engagement in the third coordinate direction (Z) associated with second positioning and Coupling member (9) is attached so that the end of the first positioning and coupling member (8) facing the additional device (2) is designed as a guide pin (12) in the form of a rotating body, that the second positioning and coupling member (9) is one of the guide pin (12) has a complementarily assigned receptacle (19) that extends in the third coordinate direction (Z), that the first (8) and the second (9) positioning and coupling element are at a radial distance from the central axis (A) of the guide pin (12 ) or the receptacle (19) assigned to each other for rotating engagement elements (13, 20) associated with the engagement, and that the first positioning and coupling member (8) with first plug parts of the plug connections and the second pin sitioning and coupling member (9) is provided with second plug parts of the plug connections in such a way that the plug parts are aligned in the third coordinate direction (Z) and meet when the rotary guide elements (13, 20) have come into engagement.

2. Functional unit according to claim 1, so that the base device is the basic module (1) of an automatic placement machine for printed circuit boards and the additional device is a component carriage (2).

3. Functional unit according to one of claims 1 or 2, characterized in that the first positioning and coupling member (8) carries a stamp plate (11) aligned at right angles to the third coordinate direction (Z), from which the guide pin (12) against the second Positioning and coupling member (9) extends that the second positioning and coupling member (9) is suitable for receiving the stamp plate (11) and opens towards the first positioning and coupling member (8) U-shaped fitting (14) has, in the middle of its stamp plate (11) substantially parallel bottom (15) has a passage opening (17) for the guide pin (12) that below this passage opening (17) the receptacle (19) is provided, and that the Floor (15) via the gimbal (18) is attached to the additional device (2).

4. Functional unit according to one of claims 1 to 3, characterized in that one of the rotary guide elements (20) on one (9) of the two positioning and coupling members one in the direction of the other positioning and coupling member (8) open 0 co ro f P ¹

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That means that the length of the end section (22) in the third coordinate direction (Z) corresponds at least to the insertion path of the plug connections.

8. Functional unit according to one of the preceding claims, characterized in that a triggering device (5, 6) which can be activated by the additional device (2) in its end position is provided for a feed unit which is suitable for the first positioning and coupling member (8) move the third coordinate direction (Z) against the additional device (2).

9. Functional unit according to claim 8, d a d u r c h g e k e n n z e i c h n e t that the feed unit is a pressurized with compressed air

Cylinder is.