DE1118373B - Assembly machine for the production of contact spring sets for telephone relays - Google Patents

Description

GERMAN

PATENT OFFICE

kl. 21g 35

INTERNATIONAL KL.

HOIh; H 04 m

T11649 Vmc / 21g

REGISTRATION DATE: DECEMBER 12, 1955 NOTICE THE REGISTRATION. ANDOUTPUTE EDITORIAL: NOVEMBER 30, 1961

The invention relates to an automatic assembly machine with an endless chain with assembly devices for the production of contact spring sets for telephone relays or other electromagnetic Switching devices that have a number of parts or units, e.g. B. Contact springs of various types, control and Actuators and holding parts made of insulating materials, the construction devices being intermittent walk past a number of feed points where these parts are stored.

The invention intends to enable the manufacture of complete sets of contact springs, to which various contact springs, such as closing, separating and switching springs, as well as a changing number Feathers of every kind belong.

According to the invention this is achieved in that the assembly devices have a number of slots contained between tongues for contact springs, this number being the maximum number of springs in the manufactured contact spring sets corresponds, and that a rotatable control roller along all feed points extends for contact springs and parallel grooves in the longitudinal direction for arcuate protruding Has parts that can be moved between the points, the number of which in a contact spring set corresponding springs entering, the number and position of the arcuate projections being the number of Determine contact springs, which is fed to the jigs and fixtures at this point, and also in which Slots they are supposed to be housed.

The invention is described with reference to the drawing, which shows an example of an automatic assembly machine represents for the production of contact spring sets. It shows

Assembly machine for the production of contact spring sets for telephone relays

Applicant:

Telefonaktiebolaget LM Ericsson, Stockholm

Representative: Dr.-Ing. H. Ruschke, Berlin-Friedenau, Lauterstr. 37, and Dipl.-Ing. K. Grentzenberg, Munich 27, patent attorneys

Claimed priority: Sweden of December 15, 1954 (No. 11 516/54)

Anders Ossian Jörgensen, Bromma,

Rune Nils Anders Thysk, Älvsje,

and Per Olof Sköldberg, Saltsjö-Duvnäs (Sweden),

have been named as inventors

Menbauautomat shown, whereupon the arrangements shown in the other figures are described in more detail.

In the automatic assembly machine shown schematically in FIG. 1, thirty-two assembly devices 101 (see also FIG. 2) are attached to an endless chain 102 which is moved intermittently so that the construction devices 101 pass from one feed point to the next. To the

Fig. 1 is a schematic plan view of the 35 feeding points, all parts of which a construction machines, finished spring set (Fig. 4), in the Bauvorrich

lines advanced, ie a certain number of contact springs 400, a return spring 401, an angle bracket 402, a lifting rail 403 and two

Fed to a detail of Fig. 2 in the form of a 40 insulating side parts 404. In the rotating jig, the contact springs are turned in the assembling device at first passing for this purpose control comb certain Zuführungssiellen 103 Fig. 3, the

Number for certain spring sets can be twelve. The return spring is fed to point 104.

5 and 6 a feed point for contact 45 The angle support and the lifting rod, which bring about the springs and the control roller running in front of it and stability or stiffening of the active organ closing parts, borrowed the side pieces at the two feed points. In the drawing, only the arrangements 106 and 107 are fed. Finally, the springs are provided which are required to illustrate the invention 50 and the angle bracket with the side parts on the. In Fig. 1, first of all, all riveting points 108 are combined, after which the finished joint, the structure and the mode of operation of the spring set, the construction device and the assembly

109 747/465

Fig. 2 is a perspective view of an assembly device surrounded by the parts; which are fed to her,

4 shows a perspective view of a finished contact spring set,

3 4

construction machines at the ejection point 109 leaves. Which is locked by means of the fixing cam 508. Before everyone

Contact spring set then has the assembly device shown in FIG. 4 is a coupling member 502

Appearance. attached to the chain. These coupling links are

The assembly jigs that put the collecting device in front of the counting device 110 (FIG. 1) and represent the organ for the spring spare parts, have all disengaged the 5. The drive impulse for the operation Fig. 2 construction shown. The main part of the operation at the feed point is carried out by the dome-building jig 210 has two cantilevered legs 502 in connection with the arcuate ones 205. Between these legs there is a number of projections 509 on the control roller 510, arranged parallel tongues 200, which at their This control roller, which is shown in Fig. 1, erinteren End are attached. At the front ends io extends along all twelve places 103. Twelve The tongues have a circumferential ridge 201, and arcuate projections 509 can be in grooves lengthways which slide axially on pins 208 of the control roller fastened in the legs 205. For everyone in front of an approachable is and can be moved in two positions guide point arranged arcuate pre-can. In one position the front tongues are jumping a contact spring into the construction device end completely free, while however advanced in the other 15.

Position (Fig. 2) the comb teeth the front The coupling member 502 at each feed point Lead tongue ends. For this purpose each acts by means of a different one in the direction of the chain 102 Tongue, which is slightly shorter than the others, pressed spring 550 onto a rod 511. if formed with a protruding tip 206, which rests firmly in the coupling member 502, this rod a recess 207 in a tooth of the comb 20 is moved so that it is in the position shown in FIG fits. The other intermediate tongues run into which is brought. It thereby rotates the one on the axis Spaces between the comb teeth. This structure 551 movable arm 512 in a working position, allows the slightly resilient tongues with the upper end immediately below one with a certain mutual play arranged drive unit 513 is located. The axis 551 is in one are so that the advance of the spring spare parts 25 attached to the end of a drive arm 514, which is of a is facilitated. As a result, the tongues are carried by axle 552 attached to the frame, as shown in Fig. 2, during the feeding The other end of this arm carries a roller 553, the springs 400, 401, the angle bracket 402 and the pressed against the circumference of the control roller 510 upper side plate 404 becomes sideways from comb 201. When the control roller automatically adjusts to the while the lower 30 rotates part of a revolution during fastening, the six movement side plate 404, riveting and ejecting the assembly jig at each point of the finished spring set corresponds to comb 201 (FIG. 3), drive arm 514 is lowered by the arches and the front ends of the tongues are freely shaped projections 509 that are moveable at the point are. are brought about in such a way that he

The contact springs are lifted up to the assembly 35 and the drive unit 513 is moved according to automatic machines in the form of metal bands with the ° ben. The disk 515 is fed to the upper part of the cross-shaped cut-out springs, the drive unit then comes into contact with the control cams 516, which are connected ^{in the direction of the belt by two or more bridges on the shaft 518.} After the contact springs from the ⁵ I ⁷ - Thus, the shaft 518 is punched out to the right in the tape and fixed contacts, and 40 in the direction facing away from the chain 102 moves, the springs have been bent to shape, of the shaft 518 is by means of a Link strips on drums for easy feeding into the 554 movably connected to a shaft 525, the jig rolled up. Is not axially movable during operation, and the strips are united by welding from the cone, so drives 503, 504 are driven, so that in this way an uninterrupted supply of strips is available for the coupling and feed movements of the addition. The tapes will be allowed to guide the drums onto the drums. When the shaft 518 is moved axially to the right with the interposition of a plastic band, it grips the individual windings in a rolled manner so that the journals 519 attached to the wheel do not touch each other while the springs and the contacts do not touch each other. of the rotation of the shaft in a Maltese cross 520, which is attached to the feed of the springs to the building devices 5 ° on a shaft 555, the bearing of which is now located in the frame with reference to FIGS. 5 and 6 in detail. On this shaft a is also described which attaches one of the twelve feed wheels 521 shown in FIG. 1. This will show the feather-spots 103. At all points the construction tape 400 devices, pushed forward one step downwards, are fixed in their position. About this (see in particular Fig. 6). In the case of a right-hand purpose, each construction device 101 is on a metal 55-directed movement causes the shaft 518, that the rail 501 is movably attached, which is screwed on the end of the lower part of a loose chain 102 mounted in the frame. At each point 103 523 moved to the left in the direction of the chain 502, the jigs and fixtures are moved six steps along Position is coupled. This springs that can be fed at any point. is then automatically actuated by means of the continuously oscillating this step-by-step feed in the forward direction push rods 506, 507, and the bottom takes place automatically by means of a revolving fixing spring is cut off. This spring is then or control cam 508, which by means of the arrangement downwards in the recess between two tongues 202 (see also FIG. 2) on the construction device cooperates with 65 in the construction device by means of a fork 524 of the latter. As soon as a step takes place, the upper part of which is eccentrically opened by bearings, during which time a spring is carried into the shaft 525 and the lower part of which construction device 101 is advanced, this is guided by the joint 556.

After this operation, the assembly device is automatically moved by one step along the metal rail 501 by means of the fixing or control cam. In the meantime, during the continued rotation of the control roller 510, the drive elements 515, 512 and 513 return to the positions shown as the drive arm 514 moves the arm 512 downwards. If a new arcuate protrusion in the immediately following position of the

As already mentioned, the control roller 510 (FIGS. 1 and 5) regulates the feeding of the contact springs by means of the arcuate projections 509, which can slide in slots 5 running parallel to the roller axis. In the example described, it is assumed that a maximum of six contact springs are pushed forward at one and the same point in a construction device. The control roller is equipped with six parallel slots for this purpose, such as

Control roller 510 is encountered, moves the io can be seen in FIGS. 6 and 1. In each slot drive unit 513 is up again, and a new one is joined by two arched projections. A total of the contact spring is pushed into the following recess between twelve arched projections from the tongues in the construction device in advance of the maximum number of springs in one, where this particular type of spring is present. The six arched ones. If there is no arched projection on the left side of the control roller in FIG steer back the layers. After the jig has been moved forward by six steps by the feeding of contact springs into the jigs, odd slots become. The six the chain with the building devices around a chain 20 other projections can be carried forward before the following division, whereby a six feed points are located and control the assembly device to the shown through the advance of the contact springs in the straight feed point and partially jigs filled numerous slots. Construction device to the next feed point. Moved by the position of the projections 509 on the. At this point the six 25 different feed points can be canceled in this manner by means of the chain 102 so that the following are determined: Builder at each feed point capable
that of the first recess or slot remains
corresponds between the tongues into which the
Contact springs are delivered downwards. Every- 3 °
times when the jigs are moved forward one pitch, the
Control roller moved back to its original position.
With the now described mode of operation of the
Automatic assembly machines are assumed to be 35
a maximum of twelve contact springs to produce one
Contact spring set can be assembled. The construction device is therefore with twelve slots for
Contact springs formed. In the drawing are for

Simplification arranged only ten contactors and contact springs 40 used in this case. the been drawn. Since only similar springs on another projections remain in the non-actuated position, and the same place can be fed, it is As already described, only one spring is used in view of the necessary use in the assembly jig at each step, Different springs and sets of springs required to move it forward when at Automatic machines with several feed points to activate the corresponding movement of the control roller equip that in the case described twelve be projection is present in the position that the wear. If, for example, the control drum only takes six closing springs.

to be inserted into a finished set, the slots and the arch-shaped

only two feed points required. In the first gene projections of various kinds on the control roller the six contact springs are fed in, which are arranged in the 5 °. In the example described in the same direction, and in the other, the number of slots can be twelve at a pre-feed point will amount to six together with a jump in each slot. When manufacturing working springs inserted. In the first place of sets of springs with such a changing appearance Contact springs in the even-numbered slots order that, for example, in the one case six and in the second place in the odd-numbered 55 contact springs of the same type in odd-numbered ones Slots used in the jig. The steps that are inserted into slots, but that in a different one Around which the construction device is located two springs of this type in even-numbered slots Haltes moved in one place, corresponding to be used as a result, one can use eight parallel slots its the distance between the even and along the control roller for a maximum of twelve contacts odd-numbered slots. Since contact spring sets 60 produce springs.

for several different contact functions, e.g. B. The feed point 104 (Fig. 1) for the withdrawal

Separating, closing, delayed separating and closing spring is basically formed in the same way as the, and two types of switching, point 103 are provided. It is, however, a bit simpler to have and considering that two different contact springs are required for each of these, since only one spring is supplied at this point. The assembly device will therefore only be that if twelve different feeders are stopped in the position at which the positions for the enumerated six different return springs 401 (FIG. 2) after they are required by their contact functions. Tape is cut straight into its slot on the

1. the spring type through the choice of the feed point,

2. the arrangement of the springs in the construction devices by the position of the slot on the Control roller and

3. the number of springs of the same type to be fed to the jigs the number of protrusions in one place.

If at any point in time the spring sets produced have a smaller number of springs than the the maximum number should contain twelve, only the corresponding smaller number of protrusions before the

rightmost side can be advanced in the assembly jig. Of course, the control roller 510 only has a protrusion or a curve in front of the feed point.

At the following feed point 105 , a unit consisting of an angle bracket 402 with a lifting rail 403 (Fig. 2) is inserted into its place in the spring set from the front part of the assembly device. This angle bracket creates a guide for the lifting rail and a holder for the insulating side parts, which are fed to the following feed points. When driven by the armature of the electromagnet, the lifting rail actuates the movable contact springs in the spring set in the usual way.

The angle brackets are supplied to the automatic assembly machine in the form of flat metal strips with cross-cut angle support elements, which are separated from the belt by means of the tool 111 (FIG. 1), bent into finished angle brackets and fed one after the other to the construction device. When the angle support passes the feed point for lifting rails, a rail is pushed into the angle support from a stack 112 by means of a feed rail, whereupon the angle support with the lifting rail, which is the control and actuation element of the set, as previously explained, into the construction device which is then moved to the next location 106 .

During this onward movement of the construction device 101 in the direction of the feed point 106 for upper side parts, fixed guide rods in front of the feed point correct the positions of the parts that have already been fed. In this way it is made possible to press the side part 404 (FIG. 7) downwards by the pressure device 702, 703 when it is pushed from a stack 700 at the point by means of a coupling rod 701 to its intended place just above the springs, so that the rivet lugs 705 attached to the angle bracket and springs are inserted into their corresponding holes in the side panel.

During the transition of the construction device to the next point 107 , the cam of the construction device 201 is moved from its guide position for the tongues into the position shown in FIG. 3. This releases the underside of the jig and the lower side panel 404 (Figures 2 and 3) can be attached in the same manner as the upper side panel.

The rivet attachments running through the side parts 804 of the springs and the angle bracket are subjected to successive riveting operations at the next point by riveting tools, whereby the supplied parts are firmly connected to one another. Finally, the finished spring set is ejected at the next point with the ejector rod 109.

The work sequences described at points 104, 105, 106 and 107 are automatically initiated at these points for all assembly devices whose coupling member 502 is coupled by means of the counting device of the machine 110. This is done in the same way as was described for the feed point 103 . The necessary driving force for the implementation of the working process is automatically obtained from rotating shafts at the feed points.

When the building device has left the ejection point 109 (FIG. 1), the comb is pivoted upwards on the building device 201 (FIG. 3) until it engages the tongues, as shown in FIG. The assembly device is then ready again to receive spare spring parts. Whether this happens is decided by the counting device 110 (FIG. 1). This is designed so that after its scales have been set to a certain number, the same number of coupling members 502 (FIG. 5) are coupled to the building devices passing by by means of a coupling arm. The arm is then brought into the position for disengaging the coupling members. The chain 102 advances one more rotation, thereby emptying all of the devices 101 of their spring sets and disengaging all coupling links. The chain is then automatically stopped by the counting device. The predetermined number of spring sets has now been produced. The machine can then be used to make the next type of spring kit. The arcuate protrusions 509 on the control drum are then rearranged as required for the new sets of springs. The counting device is set to the desired number of sets of springs and the machine is started.

The contact spring sets produced in the automatic assembly machine are complete and can be mounted directly on the electromagnetic coupling device for which they are intended. This can be done, for example, in such a way that the contact spring sets according to FIG. 4 are pushed into slots of the coupling device intended for them, the angle support 402 being guided against the guides in the coupling device and being pressed against the guides by the action of spring force on the angle support . Steps or display elements in the guide are arranged so that the lifting rail 403 is located exactly above the armature of the electromagnet.

Claims (9)

PATENT CLAIMS: 1. Automatic assembly machine with an endless chain with assembly devices for the production of contact spring sets for telephone relays or other electromagnetic switching devices which have a number of parts or units, e.g. B. contact springs of various types, control and actuating members and holding parts made of insulating materials, the construction devices pass intermittently past a number of feed points at which these parts are stored, characterized in that the assembly devices (210) have a number of slots between tongues (200 ) for contact springs (400), this number corresponding to the maximum number of springs in the contact spring sets produced, and that a rotatable control roller (510) extends along all feed points (103) for contact springs and parallel grooves in the longitudinal direction for arcuate protruding parts (509) which can be moved between the points, the number of which corresponds to the springs entering a contact spring set, the number and position of the arcuate projections determining the number of contact springs which the building devices is fed at this point, and also in which slots they are to be accommodated. 2. Assembly machine according to claim 1, characterized in that the number of parallel Grooves in the control roller correspond to the number of slots in the construction devices in which contact springs can be fed from one and the same feed point. 3. Automatic assembly machine according to claim 1 or 2, characterized in that the number of feed points (103) for contact springs (400) is equal to the number of different types of contact springs entering the contact spring sets. 4. Automatic assembly machine according to claim 1 or 3, characterized in that the feed points (103) for contact springs are arranged so that the construction devices first intermittently pass these points when all contact springs (400) entering a set are in their places in the construction devices are fed, and that after these operations, the building devices run past the feed points for the other parts, which are then fed to their respective places. 5. Automatic assembly machine according to claim 4, characterized in that behind the above-mentioned feed points a point (108) for combining the supplied parts, for example by a riveting process, and also a point (109) is provided at which the finished set of springs is pulled out of the construction devices will. 6. Automatic assembly machine according to claim 1 or 4, characterized in that the assembly devices contain flexible tongues (200) at one end, between which the above-mentioned slots are located. 7. Automatic assembly machine according to claim 6, characterized in that a circumferential guide comb (201) is arranged at the free end of the tongues (200 ) so that the tongues with a certain play during feeding the contact springs are guided, but that the tongues when pulling out the finished spring sets can be left completely free to move. 8. Automatic assembly machine according to claim 1 or 4, characterized in that the feed points (103) for contact springs to which the contact springs are supplied in the form of strips with transversely stamped, partially connected, ready-to-use contact springs, with means for successive fastening of the construction devices in are equipped with a number of positions that correspond to the maximum number of contact springs that are fed to the point. 9. Automatic assembly machine according to claim 8, characterized in that there is an automatically rotating fixing or control cam (508) in the means for successively fixing the construction devices, which is arranged so that a construction device is stopped during its stay at one point in one position, which corresponds to the first slot in the building device in which a contact spring can be fed from the location, and that it moves the building device a number of steps so that slots in the building device hold in sequence below the last contact spring in the spring band, so that in every position of the construction device the spring band is pushed forward and a spring is cut from the band and guided in the slot, but only if an arcuate protruding part (509) on the control roller (510), which revolves according to the control cam, at a corresponding position of the roller (510) actuated feed arrangements for contact springs. Considered publications:
German patent specifications No. 419 160, 472 069,
008; H. Mey, "Flow work and conveyance of bulk goods", Hall a. d. Saale, 1951, pp. 34 and 35. For this purpose 2 sheets of drawings