KR100521233B1 - Device for producing electrical subassemblies - Google Patents

Abstract

The present invention relates to an apparatus having two parallel linear termination guides 7 adjacent to each other in the center, the carriage 8 being movable along the guides. The carriage has a crossbar for the treatment head 10, which crossbar extends outwards in the opposite direction as a cantilever. The present invention provides two separate processing units 12 operable independently of each other, thereby increasing the processing capacity of the apparatus.

Description

Electrical Subparts Manufacturing Equipment {DEVICE FOR PRODUCING ELECTRICAL SUBASSEMBLIES}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to apparatus for manufacturing electrical subassemblies, and more particularly, to an apparatus for mounting electrical components on a circuit board. The apparatus has a chassis provided with two parallel linear termination guides, for example for two or more carriages of beam shape. The carriage can move on the linear longitudinal guide, each carriage being provided with a crossbar, the crossbar orthogonal to the longitudinal guide and having one or more transverse guides for the processing head for the subassembly.

Devices of this type are disclosed, for example, in US Pat. No. 5,002,448. According to this, two beamed carriages are guided on two parallel guide rails of the chassis, each carriage having a double bearing at one end thereof, the double bearing having an angular position of the carriage relative to the guide rail. Maintains and ensures accurate termination guidance. In each case, the other single bearing is used to support the crossbar on the guide rail.

In this case, the single bearings also have guiding properties, but they lead to overdefinition of the bearing system and are not essential in nature. Here, the bearings are associated with each other in such a way that in each case a double bearing of the first carriage is arranged on one side and a single bearing of the other carriage is arranged on the other side. Each double bearing is assigned to a drive unit which drives the carriage in the longitudinal guide direction. Two crossbars are provided with a cross guide, on each cross guide a triple mounting head that is movable between the device feeder and the sub-component processing portion on the chassis for transporting the elements collected from the device feeder to the position to be mounted on the circuit board. Is provided.

Assuming that a single bearing does not have a guiding function (for example, US Pat. No. 4,836,111) and merely has a supporting function, it can be said that each carriage must be guided on one side on the end guide. Thus, the two carriages protrude from their end guide towards the opposite end guide, ie in the opposite direction.

There is a subpart mounting position between the two end guides, and the subpart is fixed so as not to move during mounting. The two carriages are adjusted so that each carriage alternately mounts the device on a circuit board and collects the device from the device supply.

For example, European Patent No. 0 315 799 discloses an automatic mounting device for a circuit board, the mounting head of which is designed as a turret head that can pick up twelve elements simultaneously, for example. . As disclosed in US Pat. No. 5,002,448, it is common to provide two end guides for two oppositely oriented carriages, each with a turret head. However, the collection cycle is usually shorter than the mounting cycle. The mounting head from which the new device was collected must be in the standby position until another head completes mounting the device, which slows down the mounting speed. In addition, British Patent Publication No. 2 173 426 describes each mounting head. A mounting apparatus with two parallel fixed transverse guides is disclosed. Two circuit boards to be mounted at the same time are fixed at a predetermined distance from the mounting head on the X-Y table which can be displaced in two coordinate directions. The element is stored in a supply module mounted to be displaceable longitudinally at both sides of the table. The mounting head has two grips for the device, and can move linearly on the cross guide between the two stations in such a way that the device can be carried from the supply module to the centerline of the XY table, the device having It can be mounted on the circuit board at the position set by the XY displacement. Since the spacing between the two gripping portions is the same as the spacing between the center line and the element collection point, one element may be collected and another element may be mounted at the same time. This type of mounting system is particularly suitable for wiring elements in which the connection legs are inserted into the corresponding holes of the circuit board so that slippage is prevented when the table is accelerated. Because they are mounted at the same time, two mounting heads are assigned to the same type of device. Most of the devices used in modern electronics are SMD devices, and the connection legs are located flat on the corresponding soldering of the circuit board, which is very simple. Can be handled. Using the turret head described above, for example, 10 elements per second can be mounted. In order to prevent the device from slipping on the circuit board, it is common for the circuit board to be fixed and the mounting head to move during mounting. Displaceable tables according to British Patent Publication No. 2 173 426 are not suitable for this condition. In this patent, the mobility of the mounting head is not used for positioning in one of the coordinate directions but is simply used to carry the element from the collection station to the mounting station, similar to the case of a mounting device with a fixed turret head. Do. Thus, with respect to their operation, the mounting head and the transverse guide cannot be compared with the mounting head and the termination guide disclosed in the cited US Pat. No. 5,002,448.

1 is a side view of an apparatus for mounting a circuit board.

2 is a plan view of the apparatus shown in FIG. 1.

It is an object of the present invention to increase the mounting capacity of a device, to reduce the costs required for manufacturing the device, and to facilitate access to the device.

This object is achieved by the invention according to claim 1.

The processing head may be of other constructions and, therefore, may be used for soldering, measuring, inspecting, and testing a circuit board or subcomponent as well as fitting. For example, other processing heads may be provided for applying flux, adhesive or solder paste.

Due to the central arrangement of the guide rails and the fact that the crossbars of the carriage with a beam form, for example, are facing in opposite directions, the device is symmetrical, thus operating the two sub-parts independently of the processing head Can exclude the possibility of interference with each other. The two mounting positions can almost double the placement surface of the supply module. Due to the fact that the processing heads operate independently, different kinds of elements can be mounted in the two mounting positions, and thus the kind of elements can be increased. Another advantage is that only a single common control device is needed for the two processing sites.

This can significantly increase the processing capacity of the device. The central placement of the termination guides significantly improves access to the device from the outside, and allows element feeders extending parallel to the termination guides to be placed outside of the device. In addition, the central placement of the termination guides ensures that the supply lines leading to the drive are all centralized. The two end guide members may be structurally connected to each other in a manner to reinforce each other.

Another advantageous embodiment of the invention is described in claims 2 to 12.

The common termination member as disclosed in claim 2 results in a compact, rigid support structure, and the chassis can be manufactured economically. In addition, the proper center of gravity is located in the center, thereby improving vibration behavior and increasing chassis stability.

Due to the driving unit disclosed in claim 3, the carriage guide means and the driving unit can be combined in a small size, and can reduce the weight and have a rigid structure.

For example, due to the linear element conveying device as disclosed in claim 4, the circuit board can be guided to both processing sections along one conveying line.

The structure disclosed in claim 5 can further increase the processing capacity of the device. For example, the two end guides may have different numbers of carriages. The processing head may also perform other functions. In this way, an optimum processing head suitable for various processing operations can be constructed.

The device disclosed in claims 6 and 7 can be designed as a cantilever at the free end of the crossbar, thereby eliminating the need for guideways or support passages. This improves the access to the working area of the device. It is also possible to place peripherals such as additional element magazines or other auxiliary devices outside of the device associated with the free end.

The support passages and guideways disclosed in claim 8 are arranged vertically up and down and require smaller installation widths than horizontal arrangements. Correspondingly, the overall width of the device can be reduced. In addition, all the support passages and guideways of both end guides may be more preferably grouped into a compact support structure.

The linear motor disclosed in claim 9 makes it possible to easily use multiple carriages in one end guide since no additional drive means such as spindles or toothed belts are needed. Linear motors of this type include fixings such as, for example, magnetic rails extending the full length of the termination guide. The carriage corresponds, in effect, to an electromagnetic active part closely associated with the magnet rail, and can be driven in such a way that the carriage can be accurately moved to a predetermined position.

Due to the structure of the linear motor disclosed in claim 10, the carriage guide and drive means are grouped into a compact space saving structure.

As disclosed in claim 11, the guide member of the termination guide and the components of the linear motor interact in a particularly preferred manner. The magnetic force of the linear motor is used to pull the guide and the support member of the carriage in a defined manner with no play with respect to the support and the guideway of the end guide. Thus, the cross guiding of the carriage can be maintained at the correct angle and vertical position and may not require the guide means to reach the back side. Thus, only the end guides, for example, require rail guides and support passages extending parallel to them for accurate end guides and for maintaining the angular position of the crossbars relative to the chassis. The permanent attraction of the magnet rail is sufficient to keep the carriage stable on the termination guide even after the linear motor is switched off.

Due to the device disclosed in claim 12, only a single fixing part is required for the moving part of the linear motor. It is designed, for example, as a simple magnet rail and can be built in the termination member, thereby saving space.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

According to FIGS. 1 and 2, the device for mounting the electrical element 2 to the circuit board 1 has a chassis with a termination member 4, the circuit board 1 and the electrical element 2 having It is assembled to form the lower parts (1, 2). In the end member 4, the guide path 5 and the support path 6 of the horizontally extending end guide 7 are vertically disposed up and down, and the guide path 5 and the support of the end guide 7 are supported. The furnace 6 corresponds to the guide and the support member disposed at one end of the carriage 8. Thus, these guideways 5 and supportways 6 together form a vertical guide plane of the linear termination guide 7 for one or more carriages 8, so that the carriage 8 is in this direction. It is movable horizontally and has a crossbar 9 which extends horizontally perpendicularly to the guideway 5.

The crossbar is provided with a transverse guide (not shown in detail) for the treatment head 10, which is designed as a mounting head such as, for example, a turret head and distributed in a star shape to hold the element 2. Has a suction pipette 11. The processing unit 12 of the chassis 3 is disposed in the central work area of the processing head 10, and the processing unit 12 of the chassis is designed as a lifting table and the circuit board 1 to be processed at a processing height. Raise.

A linear subassembly carrier 13 extends perpendicular to the termination guide 7 over the full width of the chassis 3. Element feeders 14 are disposed at both sides of the lower part carrier 13, and the processing head 10 collects necessary elements 2 from the device feeder 14 and includes a circuit board mounted on the processor 12 ( Position it on 1).

Termination guides 7 are provided on both sides of the termination member 4, in which one or more further carriages 8 are guided on opposite sides of the first carriage 8. These two carriages 8 protrude outwardly in the opposite direction from the central end guide 7. Correspondingly, there is another processing part 12 for mounting the element 2 on the circuit board 1 on its side, and the sub-component carrier 13 is guided on both processing parts. This allows, for example, the two processing heads 10 to be operated simultaneously in the two processing units, and correspondingly, the mounting speed can be increased.

In addition, the device can double the number of device supplies, and a wide variety of devices can supply the device. The two carriages 8 of each end guide 7 are provided with a processing head 10, thus further increasing the mounting capacity of the device. The two mounting heads are controlled to alternately collect and mount the device 1 from the device supply 14.

The drive unit for moving the carriage 8 is designed as a linear motor 15, 16, which extends over the entire length of the electromagnetically active moving part 15 and the termination guide 7. It consists of a stationary magnet rail 16 housed in the central termination member 4. The guide passage 5 and the support passage 6 of the termination guide 7 are arranged up and down to save space. The linear motors 15 and 16 have a vertical magnetic gap matched between the moving part 15 and the magnet rail 16. The clearance between the linear motor and the contact surface of the termination guide forms a continuous common interruption. This allows the guide and support member of the carriage to be pulled freely with respect to the guide path 5 and the support path 6 of the end guide 7 by magnetic attraction between the linear motor parts 15, 16.

Since this force is very strong, the other end of the carriage, i.e. the free end of the crossbar 9, does not need to be supported and can therefore be designed as a cantilever. Thus, no support path is needed on this side, which improves access to the working area of the device. The permanent magnetic force of the linear motor keeps the carriage horizontal even when the power is switched off.

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Here, all the carriages are the same structure and are arranged rotationally symmetrically on both sides. The linear motor provided in each carriage 8 is designed to jointly use the magnet rail 16.

Claims (12)

An apparatus for manufacturing electrical sub-components (1, 2) for mounting electrical components (2) on a circuit board (1), With a chassis 3 provided with two parallel linear termination guides 7 for two or more carriages 8 in the form of a beam, the carriage 8 being movable on the linear termination guides 7, Each carriage is provided with a crossbar 9, which crossbar 9 is orthogonal to the termination guide 7 and has a cross guide for at least one processing head 10 for the circuit board 1, the processing head 10 is movable on the transverse guide, the carriage 8 having an end region guided in the termination guide, the two crossbars 9 protruding in opposite directions from each termination guide 7 In the electrical component manufacturing apparatus, wherein the chassis 3 has two or more processing units 12 for the fixed processing of one or more of the lower components (1, 2), The two end guides 7 are arranged adjacent to each other, and the two crossbars 9 protrude from their end guides 7 in opposite directions of the adjacent end guides 7, and the two or more processing units. Electrical subassembly manufacturing apparatus, characterized in that (12) is provided on both sides of the termination guide (7). 2. The apparatus of claim 1, wherein the two termination guides (7) are formed on a common termination member (4) of the chassis (3). 3. An apparatus as claimed in claim 1 or 2, characterized in that a drive unit is provided for moving said carriage (8), said drive unit being provided in the termination guide (7). 3. A lower part conveyer (13) according to any one of the preceding claims, characterized in that it comprises a lower part conveyer (13) having a conveying direction aligned perpendicularly to the termination guide (7) and for supplying lower parts to the two processing units (12). Electrical sub-component manufacturing apparatus. Apparatus according to claim 1 or 2, characterized in that the two or more carriages (8) are movable independently of one another and are guided on the termination guide (7). 3. One or more guideways (5) and one or more support passages (6) according to claim 1 or 2, wherein the termination guide (7) corresponds to a guide and a support member disposed at one end of the carriage (8). Apparatus for producing an electrical subcomponent, characterized in that it has a. 7. The apparatus of claim 6, wherein the other end of the carriage (8) is designed as a cantilever. The guide path 5 and the support path 6 of the end guide 7 are arranged vertically up and down when viewed in cross section, forming a vertically aligned guide plane according to claim 6. Electrical sub-component manufacturing apparatus, characterized in that. 7. Apparatus according to claim 6, characterized in that the drive unit of the carriage (8) is designed as a linear motor (15, 16) and is provided in the termination guide (7). 10. Apparatus according to claim 9, characterized in that the linear motor (15, 16) is arranged between the guideway (5) and the support way (6). 11. The method of claim 10, wherein a gap exists between the moving part 15 and the fixed part 16 of the linear motor disposed in the region of the guide path 5 and the support path 6, wherein the gap and the termination And wherein the mutual contact surfaces between the guide members of the guide form a continuous common interruption. 10. The continuous fastening (16) according to claim 9, wherein the continuous fastening (16) is provided as a common fastening member for a plurality of independently operable linear motors of the carriage (8), the fastening (16) of the chassis (3). Electrical subcomponent manufacturing apparatus, characterized in that it is firmly connected to the termination member (4).