DE2125172A1 - Crank mechanism with straight guide device for a tool - Google Patents

Description

Coors Porcelain Company

σ 22

28 Bremen, _{May 2} , 1971

COOHS PORCELAIN COMPANY, 600 Ninth Street, Golden, State of Colorado (V.St.A.)

Crank mechanism from old straight line device for a tool

3) 1 · Invention relates to improvements to a for Metalworking crank mechanism and. is described below with reference to a mechanism which has two reciprocating working devices arranged in parallel, for example a staple or stack arranged on a trolley and a sleeve that can slide on this for the production of aluminum cans from prefabricated cup-shaped blanks. During this process, the Bring the blank into a position in front of the ram, pressed from the sleeve to a housing provided with drawing and smoothing tools and then from it The plunger is pressed through this housing. In one the reciprocating movement of the plunger a means of a crank and connecting rod effecting device aufi the connecting rod in relation to Curve length should be short if there is enough time for one

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aissreie & eni. sehaoll ©% ufüiinaag the blank before the plunger ζνω availability steaan should ». Accordingly, the connecting rod must assume extremely large crooked positions relative to the pushing oil mounted on a wagon, so that the push rod no longer moves in a straight line.

the task underlying the invention nua therein _? To provide means by which lateral pressures exerted by the connecting rod on the ram are absorbed, whereby a rectilinear movement of the ram and thereby the production of perfectly machined products is ensured.

Erf In & uagsgesääß this is done by using the tool load-bearing and on a power-driven crank with » t © ls a crank rod articulated © straight guide » Einrichtui2g reached, which is provided with a pivotably arranged cross head, to dea per se in equidistant from its central pivot point diametrically opposite points one end of two in opposite directions extending, laterally pressure-absorbing levers are hinged, the other ends of which aa fixed tracks of the mechanism are rotatably mounted, for connection between the tool and the device a link pivotally connected to the crosshead and the tool is provided.

The achievement of a precisely rectilinear movement of the tool is also promoted by the fact that a the tool-carrying trolley connected to the straight-line guide device by sets of bolts

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Rags supported on lower and upper Treads of hardened guide rails run, with the knuckles mounted on eccentric axes and can be adjusted so that they rest against the treads with a predetermined bridge.

The rectilinear guidance of the carriage also contributes to the fact that at least one set of the running surfaces is in alignment is inclined to one another in planes which are radial to the center of the car and to the plant axis are aligned. This ensures that expansions or expansions caused by changes in temperature Shrinkage of the frame, the guide rails or the carriage radially sum center of mass of the carriage or the plunger carried by it, so that they can have little effect on the pre-tension or pre-load given to the lumps.

The aforementioned improvements can go back and forth Float can be used for machines of many types and not only for the machines described below for the final drawing of cans by means of a ram and a feed sleeve sliding on this, in which the axial movement of the plunger is significantly greater than the axial movement of the sleeve. So can for example the plunger between its two end positions a distance of 70 esa and the sleeve Only cover a distance of 10 cm between its two end positions.

In the drawings is:

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Figo 1 is a side view of the invention.

moderate mechanism in its application for the production of cans using a push rod and an aaf this slidably mounted the plunger concentrically uiagebend & n sleeve «whereby the parts of the mechanism are shown in their retracted positions;

Mg ₀ 2 is a plan view of the lifting mechanism shown in FIG. 1;

Fig. 3 is a vertical cross-section in the plane 3-3 of Fig. 2;

Fig. 4 is a vertical cross-section on the plane 4-4 of Fig. 2;

Figure 5 is an elevation, partly in section, of the lower end of the mechanism;

Fig. 6 is a side view of the mechanism shown in Fig. 1, with individual Parts are omitted and the plunger and sleeve are in partially advanced positions are shown;

. Fig. 7 is a view similar to Figure 6, are shown in the \ the plunger and the sleeve in full chance of scoring advanced positions;

Figure 8 is a ₀ in FIG 7 similar view, in which the sleeve StSSeI and din are shown in a partially retracted positions.

9 is a rare view, shown partly in section, of one of the carriage rollers and the this ball of supporting pen;

10 is a side view shown in a larger hatred the straight runnings arranged between the connecting rod and the vagina Facility;

11 shows a horizontal section in the plane 11-11 of FIG. 10;

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Flg. Figure 12 is a front view, partially in section, of the sleeve supporting Car; and

FIG. 13 shows a partially sectioned view of one side of the in FIG. 12 shown car.

The AusfÜnrungsfora shown is on a frame 10 a motor 11 is attached, which drives a large pulley 12 via drive belt 13, which is firmly connected to one of the crankshafts of an axially aligned crankshaft pair 15 · The old Eurbelarm 16 provided shafts 15 are per se opposite sides of the frame 10 supported in bearings 15 '. The crank arms are connected by a crank pin 17 which extends through the bearing 18 of a main connecting rod 19, the other of which End ends in two parallel, in the transverse direction with mutually spaced arms, which at Attack circumferential loan of crosshead parts 21, 22 « These crosshead parts are parts of a straight-line moving structure 20, hereinafter referred to as a straight-line guide device, which is shown as a whole in 1 and 2 and in detail in FIGS. 10 and 11. The pivot point of this straight guide device is designated by 24. The cross head parts 21, 22 are at their circumference with the end of a between the arms of the connecting rod 19 arranged connecting rod 23 in engagement (Fig * 11). On theirs At the other end, the connection point 23 is pivotably connected by means of a pin 25 to a carriage 26 on which the StSBeI 27 of the mechanism is arranged. The vag 26 is on both sides

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supported by bolts 30 rotatably mounted on pins 31. The pins 31 are angled from the The upper ends are surrounded by support bodies 32, the lower ends of which are provided with bolts 33. The hells 30 and 33 are held in their positions by nuts 34 held. The balls 30 run along angled edge surfaces 35 from opposite one another Sides of the mechanism extending hardened rails 36 · The edge surfaces are arranged in such a way that they are radially to the center of mass of the Carriage or to the central axis of the plunger, as indicated by the arrows in FIG. 3.

From Fig. 9 it can be seen that the central axes. 38 the bearings 37 of the bolts 30 are offset with respect to the central axes of the pins 31 supporting them. The Bollen can be adjusted so that they on the inclined surfaces 35 of the running rails 56 sit a certain pretensioning, whereby play on the Bollen is avoided.

On the front portion of the plunger 27 is a Sleeve 40 is slidably arranged, the rear end of which is attached to a second carriage 4-1, which is parallel to the plunger 27 on both of its sides extending actuating rods 42 is connected, which are movable in Lg & Serlehtung independently of the slide movement. The second car j4-1 on which a below? τ **? «γ> the rocker arm 4-3 described in FIGS. 12 and 13 is articulated with the running rails 36 are provided with rolling balls 44-. Each operating rod 42 is at its rear

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End hinged to a lever 46, fiüssa lower The end is rotatable about a pivot pin 4-7 arranged on the frame 10 and the upper end of which is one has laterally extending arm on which a follower roller 48 resting against a crouch 50 is mounted. The two cams 50 are attached to the crankshafts 50 or can also be integral parts of the crank arms 16.

The QeradfQhrungseinrichtung 20 also has upper and lower side bridge receiving .Lever 55 and 36, both of which are bifurcated at their inboard ends so that they form the crossheads 21, 22 can accommodate between them. The upper lever 33 is at 3? and the lower lever 36 at 38 on the Crosshead parts 21, 22 supported · The upper end of the upper lever 33 is attached to a pivot pin 39 attached to the frame 10 and the lower · end of the lower Lever 36 to a pivot attached to the frame 60 stored (Fig. 1 and 3)

Furthermore, if as is the case here, the mechanism is used for the production of cans, an A ™ «· *» ¹ of not shown drawing and smoothing tool «! having tool housing 63 is provided, through which a cup (not shown) is pushed through by the StoBol 27, which in its most advanced position penetrates the housing (FIG. 7) °

The one shown in Figures 12 and 13 is the downward one extending rocker arm at its ι upper edge about

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· "O -

ia in the middle of the carriage 41 on Oieseia by means of pivot 71 hinged * Msh® its Hitt ©, the rocker arm with © in @ m fixed bit of the fastening β tang® 42 verbus & onen Ansatsetüek 74 is connected by means of a corrugated © 72. An adjustable stop screw 73 is provided at the lower end of the lever 43 and rests against the lower end of the extension piece 74. A threaded screw 75 is attached to the extension piece and retrores itself through the lever 43, through a compression spring 3 and through a washer 77 that holds this spring through a spring 76 that is pressed too close by a chuck 73 and presses over the lever 43 the carriage 41 of the Hüls® 40 to its by the abutment of the Anschlagschraub® on endpiece 74 certain most vom® iiagpnde position "If dl" actuating rod ssieh 42 their em weibesten nihert Vora © lying position ^ meets d @ r d @ end of the sleeve 40 overlapping cups on the face of the Werk-2eugg®Mu @ ® @ 65 euf and terminates the forward movement of the carriage 41. As the actuating rod 42 continues to move, the spring is pressed down and the Inschlagsohraub® is withdrawn from its stop position. By correctly setting the stop screw, the carriage can be brought to a standstill relatively gently, and the pressure exerted by the sleeve on the blank can be adjusted to an optimum height for the drawing process by means of the cutter dividing the spring.

The Torwäxtsbewegung of the sleeve 40 and the actuating rods 42 is übor the Hachlaufrollen 4SJler lever 46 from squatting ^ O effected. The back guide for the sleeve © 40 and the rods 42

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has a compressed air cylinder 66 on a holder 67, the piston rod 6Θ of which is connected to the rod 42 via a connecting member 70 articulated at 69 on the piston rod. The air cylinder holds the stream rollers 48 in contact with the cam. Thus, the sleeve 40 meet at the on to the bottom of Bohlings and the Sien tool can not rebound, the sleeve must overtake the plunger 27 during its forward movement and passing them, and further so far are advanced him enough time zn a sufficient delay of the sleeve available is before it, leading the plunger, hits the bottom of the blank »This timing control is achieved by the contouring of the squats and their angular arrangement relative to the crank that actuates the plunger.

The mode of action of the Hechaniamue shown Moving back and forth of 8t8 components, such as the 8t8-Sei 27 and the sleeve 40 or others parallel to each other moving components iafc as follows: The motor 11 drifts over the elerns 1? the pulley 12 on, which rotates the crankshafts 15 and thereby the crank arms 16 connected by the crank pins 17. The rotation of the shafts 15 and the arms 16 rotates the squats 50

To move the plunger 27 aauLal ία sighting on the Werkseuggeh & use 65, the crank arms 16 and the connecting pin 17 move circularly around the axis of the shafts 15 and move the connecting rod 19 ″ the device 20, the connecting rod 23 ″ the carriage

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26 and the plunger 27 from the retracted position shown in FIG. 1 into that shown in FIG. 6 partially preceded position and then in dio in Fig.? Shown completely mistaken position. after the plunger look through the tool housing b @ w © gt hat (Fig. 7) «leads the Weiterbeve« gong d®s mechanism turns the plunger into the position shown in Fig. θ position shown and finally back to the position shown in Fig. 1 *

At the same time, the sleeve 40 is of the means of Crank 15? 16 rotated cam 50 actuated «in the Socks 50 are on the caster rollers 48 that are on the one at 45 can be swiveled with the operating rod ^ 42 connected lebein 46 sit · El © sleeve 40 is thereby from its retreated steep slope shown in Fig. 1 into its most inclined in Fig. 6 forward position moves where their movement is sum It comes to a standstill when the workpiece carried by it old of the end face of the tool housing 65 in Touch comes. From the position shown in Fig. 6, the sleeve is pushed into the position shown in Fig.

7 inclined position moved while the plunger has moved see through the housing 65 and beyond this. The sleeve 40 is during this Movement of the ram and also during most of the stooping movement of the ram into its position shown in Fig.

8 position shown still. From their ia Figo 8 shown Positions then move the plunger and the sleeve into their rearward positions shown in FIG.

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During the described movement the Kurbülstang; Q 19 become - trots of the changing oohi great ab angulations that this rod has relative to the tappets arranged on the vagina - rare pressures through eliminates the three-part cross head structure, which consists of the Xreus head parts 21, 22 and the levers 55 » 56, which are connected to the structure by pivot pins that are parallel to each other at calibration diametrically opposite, equidistant points from the pivot point of the structure the crossheads stretch out hinduro. Through this the carriage 26 and the plunger 27 are given a rectilinear movement. This straightforward disposition remains due to the adjustable pre-tensioning given to Hollen 30, “Hlersu also carries in that due to the radial arrangement of the shoulders and the inclined edge surfaces the barrel » temperature inferences did not seem to have an unfavorable effect.

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Claims (6)

Expectations scaoannaaaaaiiiiaa y Crank mechanism used for metalworking to move a piece of goods in and out in a straight line, characterized by one which carries the plant (27) and is connected to a power-driven crank (16) by means of a connecting rod (19) articulated straight guide device (20) with a pivotably arranged Cross head (21 «22), on which one ends of n three "side pressure-absorbing planes" extending in opposite directions (55 "56) are articulated, the other ends of which are rotatably mounted em fixed tracks of the mechanism, with for Connection between the tool (27) and the device (20). one swiveling with the cross head (21 * 22) and the Werkseug connected connecting member (23) is provided. 2. Mechanism according to claim 1 _r, characterized in that the tool is a plunger (27) and dos connecting member is a pivotably connected to the StSBeI, on the circumference of the Kreuzkopfβ (21, 22) engaging connecting rod (23). 209822 / CU60 3. Mechanism according to claim 1 or 2, characterized in that the straight guide device (20 ^ has a vagina (26) which carries the tool (27) and is articulated to the connecting rod (23) and is provided with rollers (30, 35) on both sides thereof, the upper and lower sets of running surfaces provided on parallel running rails (36) run along, of which at least one set is inclined in sighting on each other in planes leading to the Center of mass of the carriage and to Workzeugacb.se are aligned radially. 4. Mechanism according to claim 3, characterized in that the clusters (50, 33) are adjustably mounted on eccentric pins (31) attached to the carriage (26). 5 · Mechanism according to claim 3 or 4, characterized by a sleeve (40) which is mounted on the plunger (27) and is longitudinally displaceable and which at one end a pair of transversely spaced actuating rods (42) is articulated, the other ends are pivotally connected to the frame (10) pivotally mounted levers (46) on which Follower rollers (48) are mounted which are in engagement with cams ()? 0) rotating with the crankshafts (15) in order to move the sleeve (40) onto the tappet in a certain lateral and speed-related relationship to the slide movement along move. 6. Mechanism according to claim 5 * 209822 / 0A60 by the actuating rod (4-2) ally © Druckluftzyliader (66 ₁ 70) Diö rods opposite to the erteilton them from the squatting (50) movement 7 · mechanism according to claim 5 or 6 »characterized in that the DSS Hülae (40) is attached to oinea carriage, the pivot Bittole en a pivotally connected to the Befeetigungastangen (4-2) rocking lever (71) (4-3) characterized tight hinged is that it is threateningly connected near its lutte via a shaft (72) to an extension piece (72) firmly connected to the actuating rods (4-2), and that the rocker arm (4-3) and the extension piece also have an extension "Piece-attached, adjustable Anactolag screw" (73) and are connected to one another via a screw (75) which extends through the rocking plane and is pretensioned by a compression spring (76). 209822/0460