DE1452793A1 - Eccentric press with feeding mechanism - Google Patents

Description

"Eccentric press with feed mechanism" ¹

The invention relates to an eccentric press »

with at least one eccentric »to periodically relate to two main parts of a tool set that are guided one on top of the other in a '' Machining direction towards each other and moving from each other, purposes processing τοη parts of a strip of material that ron a feed mechanism in a conveying direction q.uer to the Machining direction is fed, with the tool set during a machining stroke a movement in the conveyor belt · » the material band is given "

i · M & documents iArt7S3Ai ».2Kr .;

• "8098 1 2 / ü 2 2 4 '' '

The known presses of this type have disadvantages, especially at high production speeds make noticeable by the accuracy of the material strip feed as a result of the delay and Loses acceleration forces. The invention aims to remedy this and at the same time the improved press in to train several pieces appropriately and rationally,

The press according to the invention is characterized by a tool carrier which is mounted in the machining direction in such a way that it is in the conveying direction is movable back and forth regardless of the position of the eccentric, by one or more organs for coupling at least one of the main parts of the tool set with the eccentric for driving this main part in the Processing direction independent of the helative position of this main part in the forward direction, as well as by separate ones Organs for controlling the reciprocating movement of the tool carrier. This makes it possible to use the tool kit, too with varying selection of the periodic feed length of the material strip, the belt speed during the effective Adapt part of the machining stroke · The invention also provides several means of implementation this adjustment and the reverse adjustment before »

With reference to the drawing, the invention explained, whereby several details emerge.

9098 12/022 4

U52793

Bs aeigen:

I ¹ Ig, 1 a front view of a press part © »in which the tool carrier with the movement mechanism and the. Tape winding mechanism are arranged in which some parts are drawn la section?

? ig. 2 shows a section of the feed mechanism according to the line ΙΙ-ΐΐ äer fig. 1 y

fig, '"3" a section of the tool carrier along the line ΧΧΙ-ΙΪΪ der? ig. 1?

lig, '4- a movement diagramia;

Pig. 5 a tool carrier for a press with a multiple "trained eccentric and induce deal with another motion mechanism FTIR the tool carrier as the press after! Ig. 1 ₁ in section PURSUANT line TY of three thirty. 6i

? ig. β is a plan view of the movement mechanism according to fig. 5and

fig. ? a section along the line VII-YII in fig. 5.

The lexkeeugträger 1 according to fig. 1 and 3 has an essentially rectangular shape and a rear wall 2. A window-shaped plate 3 is arranged on the front side is attached,

909812/0224

which is guided over the vertical side walls of the carrier 1. In the guide block 6 there is a horizontal one Guide slot 7 with parallel flat upper and lower edge .. In the slot 7 is horizontally displaceable, however, an eccentric journal bearing 8 is included in the vertical direction, which is mounted on the eccentric journal 9 is stored. In the rear plate 2 of the carrier 1 there is a slot 10 with parallel top and bottom Lower edge, in the .ein main bearing 11 displaceable in the horizontal direction, but enclosed in the vertical direction fits which bearing 11 is mounted on the main shaft 12 is, which is mounted on .diesem shaft end itself in a bearing that is firmly connected to the support parts 14,15 G-estellplatte 16 is connected. The carrier 1 and the Tool guide bearings 6 can freely back and forth in the horizontal direction due to the presence of the slot 10 biw 7 be moved while the eccentric pin 9 the Guide bearing 6 can move in the vertical direction regardless of its horizontal position. This creates the Possibility of moving the tool set with the help of a separate movement mechanism in the conveying direction of the material belt to give a movement in the effective part of the machining stroke that is synchronous with the belt movement and is just as large, so that the belt runs at constant speed or at a relatively low speed

9098 12/022 4

H52793

Velocity fluctuations can be fed.

The moving mechanism for the carrier 1 described in Pig. 1 is indicated by dashed lines, consists of one behind the frame plate 16 by bolts 17 with the carrier 1 rigidly connected control plate 18, which at its end by means of a slot 19 on a fixed Bolt 20 is guided on the frame plate 16, whereby the carrier 1 is secured against pivoting about the shaft 12 is. The control plate 18 is driven by an eccentric 21 on a shaft, not shown, which is coupled to the main shaft 12 somewhere behind the frame plate 16 via gears. The eccentric 21 engages via a, in a vertical slot 22 of the plate 18 freely movable up and down, in the horizontal direction matching slide bearing 23 on the plate 18. The eccentricity of the eccentric 21 can be in a known manner be made adjustable so that the carrier 1 makes a reciprocating harmonic movement, the amplitude of which is adjustable.

About the movements in the forward direction of the wearer 1 and the band 24, which can pass through slots 25 in the side bands of the carrier 1, during the effective part of the processing stroke each other to fully adapt, the tape 24, which incidentally is fed at, for example, a constant speed, becomes a

909812/0224

U52793

of the G speed apex of the sine line of the motion

curve of the carrier 1 given corresponding additional movement, which is shown in the left part of the diagram of fig. 4th is reproduced, or the movement of the carrier 1 is flattened over the apex part of the sine line to the constant belt speed, as the right part of Fig. 4 shows.

If this is only ensured that the period of the Movement _ö -3Qodifikation is larger than that of the effective Bearbeitungshubes a and b in Fig. 4, it is necessary when setting no great accuracy.

The first method is for the embodiment of FIGS. 1,2, applied the second in FIGS. 5 _f6.

In Figs. 1 and 2, the feed mechanism is slidably arranged on rods 27,28, the over Supports 29,30 are attached to the geotell plate 16. Springs 31 'always try to close the mechanism in opposite directions away from the feed direction and towards the adjustable stop 32 attached to the support 30.

The feed mechanism 26 has currently pressed toward one another by a spring 33, which pinches the band 24 Hollen 34,35 the latter via the shaft 36, a Einriehtungakupplung 37 and a belt or Kettenttbertragung 38 is driven by the speed variator 39.

909812/0224

U52793

The one-way clutch 37 works with a gear 40 together, in which a rack 41 connected to the carrier 1 engages. The pitch diameter of the gear 40 is the same as the diameter of the roller 35, which diameter, in relation to the rotational speed, is the feed speed of the band 24 is determined. If the wearer is during a certain period with a greater Moved speed than said feed speed, the rack 41 catches up with the belt 24, and so the pitch circle of the gear 40 which is imagined to rotate with the shaft 36 and tries to do this more quickly than to let the shaft 36 rotate, whereby the shaft 35 and the gear 40 are coupled to each other by the one-way clutch 37. Since the shaft 36 and hence the gear 40 can not rotate faster than the speed variator 39 allows, the rack 4I is now the entire. Take the feed mechanism with you so that the belt 24 then has the same speed as the carrier 1. If a second one-way clutch is switched between the speed variator 39 and the clutch 37, As indicated by dash-dotted lines at 42, the shaft 36 with respect to the through the speed variator 39 will probably rotate faster at a certain speed and the rack 41 will during its recovery period let the roller 35 rotate faster while the feed

909812/0224

U52793

mechanism 26 remains in place.

In the embodiment according to the Pig. 5-7 is more used as a main shaft with eccentric, which shafts in the same way as described for Fig. 1 with the tool carrier 51 cooperate. The main waves 52-54 are coupled to one another by e.g. gears. They carry the carrier 51 horizontally by means of bearings 55-57 movable. By using two bearings a.B. 55 and 57, the carrier 51 is secured against pivoting and can thus be driven by a rod 58 articulated to it will.

As can be seen from FIG. 5, the shafts 52-54 can be arranged quite arbitrarily with respect to one another. Also can the working cycles of the eccentric pins 59-61 have mutually shifted phases if, for example,. in a long Pole tool that should not be processed at the same time. As long as the effective machining stroke are within the synchronization period of the tape feed and the carrier movement, any phase shift is possible.

In the carrier 51 an intermediate wall 62 is indicated, which can be used when the upper main part of the Tool set is divided and the individual parts must be kept separately.

In this embodiment, the material tape. 63

909812/0224

fed from a feed mechanism not shown at a constant speed. The tool carrier 51 is reciprocated by means of rod 58 by a movement mechanism which is the apex of the sine line as in the right part of the]? ig. 4 indicated, flattened and with the constant belt speed line collapse. This movement mechanism has a pivot arm 64, whose in a straight slot

65 engaging pivot pin 66 which, because the pivot pin bloofc 68 can be displaced in the path formed by the guide ribs 67, adjustable to the drive pin 69 is, which pin is coupled to a crank pin 71 via a drive rod. The connection point 72 the rod 58 with the arm 64 can also use this arm be adjustable, as well as the eccentricity of the crank pin 71 is adjustable.

In general, the adjustment of the pivot

66 are sufficient to adapt to the feed length of the tape. By adjusting the pivot 66 takes place via a straight adjustment path, the movement pattern is practically not changed.

This movement pattern, as indicated in FIG. 4, is also determined by a specially designed slot 73 in each of the frame plates 74, in which slot two pole rollers 75, 76 are guided around axes

309812/0224

- ίο -

are rotatable on a control plate 77 »which by means of the axis for the follower roller 76 is also articulated with the Arm 64 is connected, are mounted, making the follower rollers give the arm 64 an additional pivoting movement when following the path determined by the slot 73. The slot 73 has such a shape that as a result, the pendulum movement of the arm derived from the crank pin 71 a pivoting movement is superimposed, whereby the apex of the sine line of the movement of the carrier 51 in the in Fig. 4 reproduced manner is flattened.

It should be noted that the direct suspension of the tool carrier 1 or 51 on the main shaft or on the Main shafts has the advantage that the tool reaction forces do not affect one another via the press frame same, so that this frame can be carried out easily.

In the described embodiments, the Tool carrier itself carried by one or more sliding blocks. These sliding blocks can be replaced by rolling elements or be equipped with it. Support for a tool holder is also preferred essentially vertically directed pendulum rod possible, or by a number of such rods which, for example, complete an articulated parallelogram construction. These rods can then be used directly or via a yoke

909812/02 2 4

V,

U52793

be suspended on the main shaft or the main shafts, their articulated connections with the tool carrier either above or below this wave or waves.

It can also be beneficial to use the tool carrier to be driven in such a way that a different Gesichtv..indigkeits ~ course is obtained than in the described Exemplary embodiments as a starting point for the mutual adjustment of the speeds of the material strip and the carrier was chosen. Drive modes of the Tool carriers are possible, whereby the mutual speed adjustment over a larger part of a Duty cycle can take place, and / or whereby only lower Speed differences need to be bridged, If necessary, in certain cases the special measures with regard to the speed adjustment are unnecessary.

Using cam and follow-up organs is created quite a large selection of drive options. Here, too, there is still the interposition of a swivel arm with a practically rectilinear adjustment part for the point of application of a transferring the movement Joint cheap.

Drive of the tool carrier by means of a swivel arm, which is closed by a self-contained

909812/0 2 24

H52793

Crank pin moving the path or another drive element is pivoted whose distance to the hinge point, around which the swivel arm is pivoted in the course of the cycle of its revolution through the closed path varies, can be particularly beneficial because it creates the possibility for the wearer to move to use a larger part of a cycle in the conveying direction of the material belt, and / or during one such period to keep the "speed of the toolholder closer to a constant value Drive types (with a so-called crank swing arm, crank loop or drag crank) is the drive element about the swivel arm, or the swivel arm in its joint supports displaceable. Bas drive element can be connected to a crank arm and run through a circular path. It can also start with a point e.g. a be connected by two chains and the like rotating at constant speed, whereby the drive element extends over the distances of the from the disks free running chain strands in a straight line with moves at a constant speed, which movement can be transmitted uniformly to the tool carrier.

90-98 12 / 022A

Claims (21)

P ATENI ANSPBÜC HE Iy eccentric press with at least one eccentric to periodically two main parts related to one another to move a tool set to and from one another in a machining direction, for the purpose of Processing of parts of a strip of material, which is transverse from a feed mechanism in a conveying direction is fed to the machining direction, the tool set moving during a machining stroke is given in the conveying direction of the material belt, characterized by a tool carrier which is mounted in the machining direction in such a way that it is in the The conveying direction can be moved back and forth regardless of the position of the eccentric, through one or more organs for the Coupling at least one of the main parts of the tool set to the eccentric for driving this main part in the Processing direction independent of the relative position of this main part in the direction of conveyance, as well as by separate Organs for controlling the reciprocating movement of the tool carrier. 2. eccentric press according to claim 1, characterized in that that the tool carrier can be moved in the conveying direction by at least one roller or sliding element tttUO UnttCilQtn iArt.7titf *: ^^ ₁ 3dw Αηκηιφβ · ».v.4, a.iil6 U52793 or at least one pendulum rod is carried. 3. Eccentric press according to claim 1 or 2, characterized in that the tool carrier of at least a shaft <> is carried, which also carries an eccentric. 4., eccentric press according to one of the preceding claims, characterized in that the tool carrier is set up to guide the main tool parts with respect to one another. -5. Eccentric press according to one of the preceding claims, characterized in that the eccentric with one of the main tool parts is coupled in the machining direction, over a guide track in the conveying direction Adjustment of the eccentric with respect to the main part is permitted. 6. Eccentric press according to one of the preceding claims, characterized by at least one bearing, that can slide in a slot of the tool carrier, and / or at least one bearing that is in a slot of the a main tool part is slidable, the main shaft, and / or the eccentric pin is or are rotatable in the bearing in question. 7 · Eccentric press according to one of the preceding claims, characterized in that the tool carrier in the purge direction by means of one with the main shaft the press synchronized reciprocating mechanism 909812 / 022A V, U52793 - Can be moved back and forth with an adjustable stroke. 8. eccentric press according to claim 7, characterized in that that the reciprocating mechanism is provided with a swivel arm, which via a coupling member with the tool carrier is connected, the connection of this coupling member with this swivel arm via a straight, with respect to the pivot point lying substantially radially part of the pivot arm is adjustable. 9. eccentric press according to claim 7 or 8, characterized in that the reciprocating mechanism with a Swivel arm is provided which has a straight part via which the pivot point of the swivel arm can be adjusted. 10. Eccentric press according to one of the preceding claims, characterized by means, the feed speed of the material band of the movement of the tool carrier in the Pttrderriehtung, and / or the Speed of movement of the tool carrier in the conveying direction of the feed speed of the material band -adjust the face periodically over part of the working cycle. 11. Eccentric press according to claim 10, provided with a swivel arm according to claim 8 or 9, characterized in that that the. Swivel arm is given a swivel movement by an articulated coupling rod and this swivel movement one determined by crouching and following organs 909812/0224 U52793 additional pivoting movement is superposed. 12. eccentric press according to claim 10, characterized in that the effective feed speed of the Periodic feed mechanism for the strip of material through a retrieval element connected to the tool carrier is enlarged. 13. Eccentric press according to claim 12, characterized j that the retrieval organ cooperates with a cooperation element of the feed mechanism, which Element causes the periodic increase in feed speed via a one-way coupling « 14. Eccentric press according to claim 12, characterized in that the retrieval element and the cooperation element are a rack or a toothed wheel or similar rectilinear or rotating members. 15. Eccentric press according to claim 14, characterized in that the cooperationSGlement 'on the shaft a supply roller of the supply mechanism sinus is arranged, over which supply roller the material strip runs, wherein the effective pitch circle of the cooperation element Has a diameter equal to the effective diameter of the feed roller. 16. Eccentric press according to one of claims 12-15, characterized in that the retrieval element is the feed mechanism, which is adjustably arranged, periodically in 909812/0224 U52793 adjusted to its totality. ". 17 · eccentric press according to one of claims 12-15 »characterized in that the retrieval member of the rotary movement superimposed on the feed roller of the feed mechanism an additional rotational movement, which is caused by a One-way coupling is permitted between the feed roller and the drive mechanism of the feed mechanism. 18. Eccentric press according to one of claims 7-10, characterized in that the reciprocating mechanism is provided with cam and follow-up organs. 19 eccentric press according to one of claims 7-10, characterized in that the auxiliary mechanism is provided with a swivel arm. of one in a drive element moving in a closed path is pivoted, the distance to the pivot point, around which the swivel arm pivots, varies in the course of its revolution through the closed path. 20. Eccentric press according to claim 19, characterized in that the drive element with one over two Discs running chain and the like is connected. 21. Tool carrier for an eccentric press after a of the preceding claims. 94 * 812/0224