DE2063443C3 - Double pressure press - Google Patents

Description

the latter mounted eccentrically on a gear shaft

is, with main shaft and gear shaft via one

2: 1 reduction gear are connected. Through

35 the use of only one patrix makes it possible to

The invention relates to a double pressure press, the moving masses of the carriage and its to reduce a molding die and dimensions decisively in the machine frame, so that Has Schennatrizenh½ and in the case of the working speed increased accordingly Slides molded dies are provided that can, even if different stroke lengths and in the first stroke of the slide the provided 40 appear. Another, indirect increase in The sheared wire blank from the transfer output also results from the fact Shear half with a stop for the wire that the readjustment times in the invention length is provided, in the die under preforming double stroke press are much shorter than with the is transferred and in the constructions known in the following hub. The drive for Hauptdes The slide is fully formed and ejected, +5 and gear shaft can be used in the invention the slide drive from an eccentric of the driven press must be in continuous operation and Main shaft is effected and a 2: 1 reduction does not need to be constantly accelerated and removed again the final molding process is effective. to be braked, as is the case with the double arm

Such a double pressure press is known from the perforated press according to the German Patent der USA.-Patent 2 599 053. In this known 50 script 604 561 is the case, where for the execution below press are separate drives for the slides on a horizontally displaceable different stroke lengths a total of three male molds are provided, which two crank mechanisms of the double arm are provided for the purpose of deforming the blank in successive and in a single work cycle, first of all, of the he operations. Two of the three patrices ste crank drive, then the second crank drive and are on a swiveling patrix carrier on the 55 then again the first crank drive is accelerated and the front of the carriage is arranged and must be stopped again.
alternately via a shaft and a cam drive in On the basis of an exemplary embodiment, the

Brought working position, so that in a forward invention designed double printing press in stroke of the slide either one or the other individual in connection with the drawing described both patrices is effective. The toggle 60 ben. It shows

Setup for these two male molds is via a F i g. 1 a longitudinal section, partly broken away

Reduction 2: 1 from the drive shaft of the slide, by the double pressure press after the invention driven. Such a double pressure press is

Requires a relatively long period of time per Ar- F i g. 2 a plan view of the power transmission system

example and is therefore not suitable for a best 65 from the gear shaft to the shear reversing drive at higher speeds, so that its device and the ejector device,
Output - also due to the frequent Fig. 3 a side view of the actuating device

Adjustment work - is relatively low. tion of the movable shear part,

3 4

Fig. 4 is a top view, partly in section, showing the related central opening, Relationship between the carriage, the male mold and in which an ejector pin 19 is displaceable, which the

represents the wire shear device, ejects workpiece, see for example FIG. 8th.

Fig. 5 to 8 a series / on phases in an ar- The lower end of the lower arm of the double

example game of the double pressure press according to Fig. 1, and 5 annhebels 5 is through a bolt 23 at one end

although articulated a lever 22, the other end of which

FIG. 5 shows the first phase, in which a piece of wire is cut off by the shearing mechanism so that it can be swiveled in and is seated under shaft 3 formed eccentric disk 6 on a one-piece with the gear direction. Ebcn interposition of a shear stop pin if formed in one piece with the gear shaft 3 the patrix in a first, short forward stroke of the io is located further inside on it a second Ex-carriage is driven into the molding die, center disc 24 on which one end of an actuating

6 shows the second phase in which the movable rod 25 is pivotably seated, the other end thereof Shear part of the shear device from its transfer by means of a bolt 27 'to a two-armed lever

position is withdrawn into its shear position and 27 is hinged, the nm attached to the frame 1-

the male mold can also be pivoted from its working position into its 15 th bolt 26. The top of the

Rest position is withdrawn leaving two-armed lever 27 is in engagement with the un-

of the preformed blank in dtr molding die, lower end of an ejector pin actuating lever 29,

Fig.7 shows the third phase in which the preformed the between its ends around a on the Gesteill Blank in a second, longer Vo * wärtshub of the attached stub axle 28 is pivotable. The The slide is finally formed into the finished product ao the upper end of the lever 29 lies against the outer one

will. End of an axially aligned on the ejector pin 19

Fig. 8 the fourth phase, in which the male part is withdrawn from its intermediate working position, which is arranged displaceably in the gesture, into the rest position. and the product is ejected by the ejector pin from the smaller diameter than the outer die and a new wire blank is cut. On which is led between the two sections, there is a shoulder formed around the thinner

9 to 12 are schematic representations of the compression coil spring 31 arranged around it Doppelarmgetriebes that the carriage short and on, the other end rests against the frame 1, longer stroke movements can be carried out, so that the spring 31 presses the outer end of the intermediate positions of a working cycle of the double rod 30 against the upper end of the lever 29 and presses it.

Fig. 13 is the graphical representation of the relationship according to Figure 4 is parallel to the machine frame

between the angular position of the Antriebswellenex- die 20 a fixed shear die 32 attached

center disc and the movement of the slide. stigt, through its central opening 33 to process the

According to Fig. 1, in a machine frame 1, a 35 beitende DiahtmaterialM by means of two feed rollers Main shaft 2 and parallel to it and below it a len 34, 34 is fed. The fixed shear Gear shaft 3 rotatably mounted. The main shaft 2 trize 32 works together with a movable one

is at a certain speed, for example, upper guide shear half 35, which is attached to an arm 40 a

drivable by an electric motor; is attached to it and that of a three-armed lever 40 (Fig. 3),

Gear shaft 3 are teeth that mesh with one another around a pin 41 attached to frame 1

wheels 2 α or 3 α attached, which is pivotable on its circumference. The movable shear half 35 has

different numbers of teeth in a ratio of 1: 2 have an opening 36 that connects the shaft of a

sen, so that the speeds of the shafts 2 and 3 head 37 'provided shear pin 37 displaceable

behave like 2: 1. records. A fixed stop 38 is opposed

An eccentric 45 above the movable shear half 35 on the frame 1 is integral with the main shaft 2

Disc 4 formed on which a double lever 5 is attached.

is rotatably mounted, the upper arm of which has a The other two arms 406 and 40 c of the three

Bolzen9, an intermediate piece and a bolt 10 armed lever 40 wear at their outer ends

articulated with one carried by the frame I and in rollers 42 and 43, which are mounted on a shear cam 45

an additional guide 1 α guided slide 7 50 or a switching cam 46 run at a distance

connected is. In an opening 12 of the carriage 7 is one from each other on a transverse, in the frame 1

the male carrier 11 can be used, the shear actuating shaft 44 mounted in its position is fastened,

in the carriage 7 by a guided in a groove, as shown in FIG. 2 shows about her bevel gear 48 and a

Wedge 13 and a bevel gear 47 projecting into the carrier and provided on the gear shaft 3

screw 14 can be fixed. The wedge 13 has a since 55 this is drivable against the lever 40 press!

borrowed extension with threaded hole for receiving a compression spring 49.

an adjusting screw 17. On the carrier 11 is a The rotation of the shear cam 45 is effected via the

hollow male holder 15 attached, one as a pre-roller 42 and the arm 401> that the lever 40 to

and the male die 16 serving the finished form takes up the pin 41 and pivots the movable one

and hold on. The position of the front, working cutter half 35 is that in its opening 36

of this male mold 16 is adjustable by loosening the piece of wire of a certain length from the rest

Adjusting screw 14 and then left or right in the opening 33 of the fixed shear die 32 Turning the adjusting screw 17 clockwise shears off the wire material M. on the other hand Axially aligned with the male mold 16 and this causes the switching cam 46 to circulate over you

opposite is on the machine frame 1 a hollow Ma- 65 roller 43 and the arm 40 c that the lever 40 un

trizenhaltcr 18 attached, which pivots a die 20 with the pin 41 and thereby the movable

a Matrizcnhöhlung 21 receives and holds. The shear half 35 from the shear position in which they dei

The die 20 has a shear die 32 that is fixed with the die cavity 21 and faces it

Continue to switch to another position, usually penetrating and ejecting the product (Fig. 8). Through Forming die 20 faces. When the above work cycle is repeated again, the shaft 44 and thus the cams 45 and 46 are continuously produced in the desired shape, the movable shear half 35 can be set to its origin.

Liehe position in relation to the fixed screw 5 The explained mode of operation of the slide 7 in the triangle 32 returned. Double stroke, ie a first short stroke and a second, longer stroke, designed according to the invention, can be generated by the press works as follows: According to FIG. 4 is the drive mechanism that consists of the main shaft 2, gear working material M through the opening 33 of the fixed shaft 3, gear 2 a, gear 3 a, first eccentric shear die 32 into the opening 36 of the bc io disk 4, second Eccentric 6, Doppclarmheweglichen shear half 35 advanced up to a bei5 and lever 22 (Fig. 1). Fig. 9 to 12 position in which the front end of the wire hits the shaft show this mechanism in different Slellundes shear pin 37, the head 37 'against the gene and Fig. 13 the relationship between the UmAnschlag 38 is present and a further advance running of the first eccentric 4 and the different material is prevented. When the movable is exercise of the slide 7 during a work cycle. Shear half 35 from this position in the direction of FIG. 9 shows the carriage 7 being moved towards the forming die 20 in its retracted arrow, its starting position becomes. If, from this position, the wire part located in the opening 36 is sheared off from the wire M remaining in the first eccentric disk 4 by 180 ° to the right and forms a raw turn, the second eccentric disk 6 turns slightly. The movable shear half 35, with the raw ao opposite by 90 ° to the left. Since the lever 22 and the shear pin 37 in their opening 36, controls the movement of the double-arm lever 5, it moves further into a second position in which the slide 7 moves out of the position according to FIG. 9 to face the molding die 20 (FIG. 5). Then a first short stroke s forward to the position after is shown in a manner described below in FIG the patrix held by him 16 over the second eccentric 6 by 90 °, the Schlitden shear pin 37 is a preliminary shaping stroke th 7 withdrawn by the short stroke j in which executes on the blank m , which thereby in the Ma- starting position (Fig. 11). In the case of a further right-hand twist cavity 21, the ejector disk 4 is preformed by 180 ° and left-hand twisted product to form an intermediate (FIG. 5). Thereafter wild 30 hung the eccentric disc 6 by 90 ° moves the ^{Schlit-SchS: <ten7} returned to its original, retracted th 7 about the längeifn.zweiten hub 5 before-Stel position in which, and at the same time averaging of FIG. 12 , and with a further clockwise rotation the movable shear half 35 is switched back to its original position of the eccentric disk 4 by 180 ° and left-hand rotation, while the preformed one of the eccentric disk6 goes by 90 °, the slide? in blank m in the die cavity 21, 35 remains the one shown in FIG. 9 starting position shown back. (Fig. 6). According to the invention, only one male part is on. Then it is attached in a carriage described below, which alternates around a short distance of the carriage? is advanced by a second, longer and a longer stroke, with the stroke advanced, with the male part 16 executing a preforming stroke on the inungm and him through the short stroke of the carriage and by means of a valid shaping stroke on the preformed raw 40 of the shear pin thereby executed in the final shape P of the molding die located blank, z. B. that of a roller bearing roller, the shape of which is reshaped into an intermediate product, corresponds to the shape of the die cavity 21 and, with the longer stroke of the slide, the male die (FIG. 7). After that, the Schlitten7 slides back into a final molding blow to the ^foregoing: ne initial position, after which the ejector "performs formed blank and this to the Enderbetätig" 19 is the forward in the Matrizenhöhlung 21 testimony converts.

For this purpose 2 sheets of drawings

Claims (1)

It is also known that next to a die only noct Claim: to use two male dies that are straight on the slide nig movably arranged and with constant Double pressure press, which are moved back and forth in the machine frame. In the Bud a form die and a half die half 5 "Upsetting and pressing" by J. Billigmann _; has and in the case of the driven carriage 1953, p. 266, these two male molds afc pre-accumulation male molds are provided and in the first stroke referred to rather and anvil. From the British Pades slide the provided, sheared tentschrift 621622 is known to arrange the shear die half in addition to the die wire blank from the transfer shear half, and mi. one which is equipped with a stop for the wire length ίο moving the shear die half is to transfer the sheared off into the die under preforming over the wire blank to the die, where it is led down and in which the pre-upsetting is pressed in in the subsequent stroke. When the length stop of the slide is fully formed and ejected, the length of wire to be sheared off defines the length of wire to be sheared and higher working speeds limits spirit, characterized in that only sets are. a single pre-form and finished form male part (16). B. in the production of ROI is seen, for the drive of which are known per se or needles for roller bearings, however, one is ^ aran inter Way on the main shaft (2) eccentric an ao interested, a large number of parts quickly and Double arm lever (5) is mounted, which on the one hand hermit inexpensively from a wire-shaped starting material the slide (7) and on the other arm. a lever (22) is connected which is eccentric It is therefore an object of the invention at is mounted on a gear shaft (3), whereby double pressure presses increase the output.
Main shaft (2) and gear shaft (3) via a »5 According to the invention, this is geared to an initially ge-2: 1 reduction. called double pressure press achieved in that only a single pre-form and finished form male is provided for driving it in a manner known per se a double arm lever 30 is mounted eccentrically on the main shaft, which on the one hand with the carriage and on the other arm is connected to a lever, which