Background technology:
In electric elements, the contact is common structural member, its design feature is that silver point is assemblied in the pre-manufactured hole of electrical equipment contact chip (as copper conducting strip), with riveted way silver point is fixed on the contact chip again, and the characteristics of this class product are that the scope of application is extremely wide, the quantity of product is very big, and silver point is small-sized, for a long time, and the assembling work between silver point and the electrical equipment contact chip, all be to finish in conjunction with a large amount of hand labours with operating mechanism, that generally adopts has following two kinds of fit:
Adopt existing press and be aided with the mould feeding, material loading and blanking are finished by manual operation, wherein in the operating process on silver point and the contact chip location centering of aperture be a big difficult point, though there is mould to lead, but still rely on manual just assisting, and silver point is small-sized, brings very big difficulty to the operator, and required operating time of obviously each riveted process is longer, not only production efficiency is extremely low, and labour intensity is also bigger, and the running cost of product also rises thereupon, simultaneously, in the press operation process, staff very easily causes personal injury at any time with corresponding action, and is very dangerous;
Adopt the fit of precision index plate press, because the use of precision index plate, centering location condition between silver point and the contact chip aperture improves, but the material loading of precision index plate operation and the riveted stroke of press be respectively by the cooperation of artificial its operation of realization be connected, obviously, the coordination of precision index plate and press is to rely on operator's technical ability to guarantee synchronously, as obtaining than the operation of fast pace and the goods of better quality, must finish by operator than high-tech, its corresponding processing cost rises thereupon, as finishing by general operation person, it is out of control easily that human factor cooperates work, and simultaneously, corresponding labour intensity is still bigger, therefore the production efficiency raising is not obvious, and production cost is still higher.
Embodiment:
With reference to Fig. 1,2, silver-point riveting machine includes framework 1, cam rocker arm mechanism 2, indexing mechanism 3, silver point lowering mechanism 4, vibrating bunker 5, stable drive ratio mechanism 6, and framework 1 is provided with the each several part assembly of riveting machine.
Cam rocker arm mechanism 2 includes camshaft 21, cam 22, roller 23, rocking arm 24, motor 25, pressure head component 26, shown in Fig. 3,4, wherein:
Camshaft 21 is riveting machine major impetus driving members, camshaft 21 is bearing on the bearing pedestal of framework 1 by one group of rolling bearing, be provided with cam 22 between two bearings, camshaft 21 1 ends drive and are connected with motor 25, and its other end is to drive the driving wheel 61 that is connected with stable drive ratio mechanism 6;
Cam 22, its structure can be made one with camshaft 21, also can be composite type, and the moulding curved surface of cam 22 should be made and guarantee that the riveting stable action is effective, and this curved surface is to roll to contact with roller 23 and should has anti abrasive feature;
Roller 23 is cylindrical rollers, is made by wear-resisting material and technology, and the lower end axle 241 that roller 23 is set in rocking arm 24 is movingly, can be provided with anti-wear sleeve between the two;
Rocking arm 24 includes lower end axle 241, arm body 242, bolster 243 and upper shaft 244, lower end axle 241 is extended through the axle sleeve that sets firmly on the arm body 242, also can be the through hole that is fixed on arm body 242, this moment sheathed anti-wear sleeve on lower end axle 241, this axle sleeve and roller 23 cooperates; Arm body 242 is the curved bar shape, is made of a fixed pivot and two activity supporting points of two ends, for the power that transmits riveting should be made the structure with enough rigidity; Bolster 243 is bolsters of the middle part fixed pivot of rocking arm 24, and structure can be similar with lower end axle 241; Upper shaft 244 is that rocking arm 24 is the activity supporting point that driving is connected with pressure head component 26, its structure can be upper shaft 244 and is installed in rocking arm, upper shaft 244 is stretched to be in axle 261 the mounting hole that is located at pressure head component 26 and is slidingly matched, convert 261 moves back and forth of pressure head component 26 to the swing of rocking arm 24, the upper end that also can adopt rocking arm 24 is a mounting hole, and the structure of establishing trundle on the axle 261;
Motor 25 is major impetus of riveting machine, and motor 25 is installed on the framework, and its shaft extension is to drive with camshaft 21 and is connected;
Pressure head component 26 shown in Fig. 2,3, includes axle 261, pressure head regulating part 262 and pressure head 263, and its structure and existing structure are same or similar.
Indexing mechanism 3 includes primary shaft 31, indexing mechanism 32 and index dial 33, wherein:
Primary shaft 31, this axle is bearing on the framework 1 by bearing, and primary shaft 31 1 ends drive and are connected with stable drive ratio mechanism 6 driven pulleys 63, and the other end of primary shaft 31 drives the driving cam 321 that is connected with indexing mechanism 32;
Indexing mechanism 32, as shown in Figure 5, its structure is identical with prior art, mechanism converts the level of primary shaft 31 to the vertical axis of its rotating disk 323 to axis, and rotation at the intermittence that converts rotatablely moving continuously of primary shaft to its rotating disk 323 simultaneously, the realization of its function is the cooperation that is provided with awl roller 322 with the forming tank of driving cam 321 and rotating disk 323, and rotating disk 323 is provided with through hole and index dial 33 can be fixed on the rotating disk 323 with bolt; The combination of also available bevel gear of the realization of above-mentioned transmission agency and dial mechanism, or other similar kinds of drive;
Index dial 33, as shown in Figure 3, to be bolted on the rotating disk 323, periphery along dish is provided with one group of anchor point 330, the circumference that the center line of these anchor points 330 forms and the pivot of index dial 33 are concentric, can a ccontaining electrical equipment contact chip on each anchor point 330, the aperture and the anchor point 330 of silver point 8 of stretching through on this contact chip is concentric, and this anchor point 330 is just on the center line of the pressure head 263 of pressure head component 26, each anchor point 330 has been made accurate calibration, and structure and existing precision index plate are same or similar.
Silver point lowering mechanism 4, it is the facility that silver point 8 is infeeded index dial 33 from traditional vibrating bunker 5, include rotational pin 41, swing plate 42, workpiece spacer pin 43, banking pin 44, guide rail 45, cylinder 46, fixed mount 47, guide rod 48 and adjustable shelf 49, shown in Fig. 6,7, wherein:
Rotational pin 41 is the bearing pins that are fixed on cylinder Rocker arm 4 62, and the two supports of rotational pin 41 is on axle sleeve movingly, and axle sleeve is fixed on fixed mount 461, and fixed mount 461 is installed on the framework 1;
Swing plate 42, its middle part is provided with through hole, can install rotational pin 41 in the through hole, and fix with hold-down screw, when rotational pin 41 rotated with cylinder Rocker arm 46, swing plate 42 is swing thereupon also, the two ends of swing plate 42 are installed with the pushing screw respectively, one screw contact workpiece spacer pin 43, another screw contact banking pin 44 is regulated the extreme position that two screws can suitably be adjusted its upper and lower stroke;
Workpiece spacer pin 43, its top is provided with convex shoulder and corresponding packing ring, to hold its sheathed front spring 431, the other end of this front spring 431 holds the end face at fixed mount 47, the cylindrical section of workpiece spacer pin 43 stretches through on fixed mount 47 in the antifriction axle sleeve, and less spacing section 432 of diameter made in the bottom of workpiece spacer pin 43, when swing plate 42 is pushed into lowest order with workpiece spacer pin 43, spacing section 432 external cylindrical surface be able to stop that silver point 8 falls, and its bottom face and guide rail 45 still leave the gap;
Banking pin 44 is the sides that are fixed on adjustable shelf 49, and bottom face 442 diameters of banking pin 44 are identical with silver point 8 blank diameters, and when banking pin 44 came downwards to the limit, bottom face 442 be able to be contacted with silver point 8 with suitable pressure; Distance between banking pin 44 and the workpiece spacer pin 43 is less, thereby the structure of employing adjustable shelf 49 and guide rod 48, guide rod 48 is fixed on the opposite side of adjustable shelf 49, and stretch through in the antifriction axle sleeve of fixed mount 47, the pushing screw of guide rod 48 tops and swing plate 42 contacts, and make convex shoulder to hold sheathed rear spring 441, the other end of this rear spring 441 also holds the end face at fixed mount 47;
Guide rail 45, its structure and prior art are same or similar, guide rail 45 is skewed so that silver point 8 can glide along guide rail 45 in the mat deadweight, the feed outlet of the upper port butt joint vibrating bunker 5 of guide rail 45, the anchor point 330 of the lower port subtend index dial 31 of guide rail 45, and the silver point 8 that can cause to fall and break be able to enter the aperture of electrical equipment contact chip;
Cylinder 46, its structure is a universal component, and the top of its piston rod is hinged with cylinder Rocker arm 4 62, and its cylinder body is installed on the framework 1;
The action of silver point lowering mechanism 4 is shown in Fig. 8,9, Fig. 8 is the agretope of mechanism, cylinder 46 actions, drive swing plate 42 and swing in a direction indicated by the arrow through cylinder Rocker arm 4 62, rotational pin 41, swing plate 42 compression front spring 431, workpiece spacer pin 43 is descending, and its spacing section 432 be able to be limited silver point 8 and fall, mechanism is when agretope, and index dial 33 is being done corresponding rotation; Anchor point 330 and 45 pairs of timings of guide rail when index dial 33, mechanism enters retarder location shown in Figure 9, at this moment, cylinder 46 is made counteragent, swing plate 42 is swung in a direction indicated by the arrow, swing plate 42 compression rear spring 441, through guide rod 48, it is descending that adjustable shelf 49 drives banking pin 44, and its bottom face 442 is pushed down silver point 8, limit its downslide activity, at the same time, under front spring 431 restitutions, workpiece spacer pin 43 is up, its spacing section 432 is left silver point 8, and silver point 8 slides to the anchor point 330 of index dial 33 down to conduct oneself with dignity.
Decide transmission mechanism 6, it is one of important component of pressure head 263 and 33 mechanical linkages of feeding index dial, because the two transmission distance is bigger, usually can adopt belt and linked transmission, stable drive ratio shown in Figure 4 mechanism 6 includes driving wheel 61, driving member 62 and driven pulley 63, this driving wheel 61 is the profile of tooth belt wheel, and driving member 62 is a cog belt, and driven pulley 63 is the profile of tooth belt wheel; Also can be driven pulley the 61, the 63rd, sprocket wheel, driving member are the chain-drive mechanisms that chain is formed; Riveting machine is selected from motor 25 to the gearratio between the index dial 33, can suitably be distributed by parts such as motor speed, stable drive ratio mechanism and indexing mechanisms and determine.
The running status of silver-point riveting machine is, vibrating bunker 5 is sent into silver point 8 and is made a detour 45, the silver point 8 that silver point lowering mechanism 4 will glide on track 45 is inserted the contact chip aperture that has been laid in index dial 33 each anchor point in regular turn, index dial 33 and pressure head 263 are riveted on silver point 8 on the contact chip exactly in the mode of mechanical linkage.