DE1063064B - Pressing device with pressure abutments for shoe presses - Google Patents

Description

GERMAN

The invention relates to a pressing device for shoe glue presses with at least three pressure abutments, whose lateral distances are adjustable and which are effective on the inserted shoe, that if the altitude (s) of one or two pressure abutments change, the altitude of both of them other or the altitude of the third can be (will) be changed, as well as with pressure stamps for picking up the pressing force.

There are devices known that the introduced, placed on a press cushion shoe affect in two places, namely in the area of the toe and in the area of the heel part of the last. These pressure abutments are both in the horizontal direction in guideways and in the vertical Direction shiftable and adjustable by means of toothed racks.

Such pressing devices, which have only two abutments, are sufficient in some cases. at one of the known devices, the two pressure abutments are common in the horizontal direction adjusted, while each has to be adapted to the height of the last. So the altitude changes the support points of the last, then each of the two pressure abutments must be manually on the corresponding one Height can be adjusted. Each of these pressure abutments is guided so that it is apart from the ability to move sideways, can only move in one direction.

If the bar has an incision, then there is only two pressure abutments with an arrangement the risk of the last breaking in the area of the incision. Even as far as annoying pressure points to be avoided at the tip of the shoe, the last must be supported in three places.

Pressure abutments which support the inserted shoe, which is arranged on an inflatable pressure cushion, at three points, namely at the tip, on the heel part and on the crest of the groin, are also known. In a known pressing device of this type, a pivotable pressure abutment part is adjustably mounted on a pivotable arm, on which the heel pressure piece can be pivoted in a guide track. At the other end of the pressure abutment part, a second, also two-armed pivot member is mounted, at one end of which a pressure piece for the tip of the inserted shoe is attached. These two pressure pieces can also be mounted in several positions on the pivoting part connected to them. Since this pressure abutment consists of an oscillating lever arrangement, with the closing lever also executing a pivoting movement and the individual pressure pieces have no guidance in the vertical direction, this results in the pressing device with pressure abutments
for shoe presses

Applicant:

Schuhmasctiinen-Ges. Hanke & Co. m. B. H., Alfeld / Leine, Hannoversche Str. 45

Ernst Haumann, Stetten via Hechingen,
and Werner Lorenz, Alfeld / Leine,
have been named as inventors

Closing the pressure bar or during the pressing process always slipping of the shoe primarily to the rear. In addition, such a pressure abutment is limited in practical use, as the pressure pieces with the connecting levers become one of these with increasing splint splitting Take up an inclined position that a proper clamping of the workpiece is no longer possible is.

To remedy this, according to a statement not previously published, means were suggested that include a Changing the distance between at least two of three pressure abutment surfaces from the main beam of the pressing device allow, whereby each individual surface can be adjusted in height independently of the other surface or surfaces is. In the execution according to this proposal, however, the three pressure abutments must very much be adjusted exactly opposite the last.

It has also been recommended to use a triple pressure abutment in vulcanizing presses and that to guide individual columns so that they can only be moved in one direction; however, here too each of the individual Before starting work, the pressure abutment is precisely set by hand to the corresponding strip contour will. Only the opening of the mold is made possible by the extension of the spring-loaded Supports the pressure stamp, which is inexpedient when applied to a shoe gluing press, since thereby the available working space is reduced and one for the closing movement Requires a larger stroke, which results in a reduction in performance. The individual pillars for the pressure abutments are housed in a solid block and therefore only as a whole in the longitudinal direction of the shoe can be moved. Independent

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Moving each individual pressure abutment is therefore not possible.

Finally, a pressing device with three pressure abutments for shoe presses is known, wherein the two rear pressure abutments are connected by a gear and can only be moved in one direction but the tip abutment can be adjusted by hand independently of these got to. All pressure abutments are here also attached to a pivotable locking lever. Included However, the two rear pressure abutments have no adjustment option in the longitudinal direction of the shoe, so that the last or shoe can not be caught in the places where this is necessary is.

The invention is based on the object of a pressing device with at least three pressure abutments to make available, which further improves the known facilities.

According to the invention it is proposed that the three pressure rams hinged to the pressure abutments in in a manner known per se in a straight line, parallel to one another and in a direction perpendicular to the workpiece to lead. Each of the pressure abutments can move at the free end of one of the pistons in a cylinder Be articulated pressure ram, the cylinder chambers connected to one another via lines are.

If a fourth pressure abutment is provided, which influences the heel of the inserted shoe, then this can be controlled in the same way by connecting it to the lines of the other pressure abutments connects. In this regard, it should be noted that it is known in shoe glue presses, one with two One-piece pressure abutment acting on the bars on a sliding bearing in a cylinder and to arrange pivotable piston which is influenced by hydraulic means. These Design has only the use of a hydraulic means in common with the design according to the invention, which is known for exerting force.

The lines are made of flexible material that is resistant to internal pressure.

It is expedient to provide means which connect the connecting lines between the cylinder chambers separate in order to prevent pendulum movements of the pressure abutment during the pressing process, further those that allow the pressure in the lines to be changed in order to be able to relieve the latter. So can a the connection of the lines canceling piston be provided. For returning the thrust bearing After pressing, it is advisable to use a distributor with a suction connection connecting the lines to arrange.

The pressure abutment can be adapted to the bar length by adjusting the cylinder their lateral distances transversely to their pressure stamps, as in the case of pressing devices with two pressure abutments known per se, postponed. The cylinder of the pressure stamp influencing the paragraph can be arranged displaceably along its pressure ram.

But you can also have each abutment at one end of its only one-directional plunger link and connect the plungers to each other via known double levers. It it is advisable to define the bearing point of a double lever on another pressure stamp on which one end of the other double lever is articulated, the bearing point of which is fixed to the housing

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det is. In this case, the plungers or their guides can be compared to the frame Do not move the pressing device sideways because the length of the two double levers cannot be changed. It is therefore advantageous to adjust the pressure abutments transversely for lateral adjustment to the size of the bar to arrange their plungers displaceably, for example by the fact that the guide rods provided with transverse slideways.

ίο The invention is illustrated using the drawing. It shows

Fig. 1 is a side view of the upper part of a pressing device used to glue a sole, partially cut,

Fig. 2 is a section through the embodiment of Fig. 1, along the line II-II,

Fig. 3 shows a section through a pressing device similar to the embodiment of FIG a heel pressure abutment,

FIG. 4 shows a section through a pressing device similar to that of the exemplary embodiment according to FIG. 1, whose lines connecting the cylinder spaces are separated from one another by a separating agent can,

5 shows a section through a press device similar to the example according to FIG. 1, the cylinder spaces and lines of which are connected to a pressure or suction device via a distributor, and FIG and the lines connecting these are in operative connection with one another,

Fig. 7 is a side view of the upper part of a pressing device, the abutment of which on guide rods are articulated, which are connected to each other via double levers,

8 shows a section through a double strip comb bearing,

FIG. 9 shows a section through a double strip comb bearing, similar to that according to FIG. 8.

On the main support 1 of the upper part of a pressing device, a guide track 2 extending transversely to this is fixedly arranged, opposite which vertical cylinders 3, 4 and 5 of the same or different diameter with parallel axes can be displaced in the horizontal direction. As a result, each pressure abutment, as is also the case with the known pressure abutments, can be adapted to the strips of different sizes. The fixing of the cylinders with respect to the guide track 2 can, as is known, for example by means of clamping screws 6 or the like. The spaces that are enclosed by cylinders 3, 4 and 5 are connected via flexible lines 7 and 8 . A plunger 9, 10 and 11 is guided in a movable and sealed manner in each of the cylinders. A suitable pressure medium, for example air, expediently a liquid, is provided in cylinder chambers 12, 13 and 14 and in lines 7 and 8. Filling and draining openings (not shown) are used to fill or empty these pressure media.

If a pressure pad P arranged under the inserted shoe is moved in the direction of the sole to be glued, pressure abutments 15, 16 and 17 arranged on the pressure stamps 9, 10 and 11 automatically adjust to the corresponding explosion of the shoe.

It is expedient for the tip abutment 17 to be rotatable in the plunger 11 by means of a pin 18

Claims (1)

1 to store and set by a screw 19 or the like. In the desired position. The remaining pressure abutments 15 and 16 are expediently in an articulated connection with their pressure rams 9 and 10. The pressure abutment 16 can be designed in such a way that it also acts on a part of the strip comb cutout surface. Instead of the pressure rams 9, 10 and 11 guided in the cylinders 3, 4 and 5, the cylinder spaces 12, 13 and 14 of which are connected via lines 7 and 8, pressure abutments 23 can be used, as can be seen from the exemplary embodiment according to FIG , 24 and 25 on guide members, for example plungers 20, 21 and 22, arrange or articulate. In this case, it is advisable to provide slideways 26, 27 and 28 on the plungers 20, 21 and 22, which run transversely to the direction in which the plungers 20, 21 and 22 extend, so that the plungers 23, 24 and 25 of the bar size can be displaced can adjust on the slideways. The pressure stamps 20 and 21 are connected via an articulated lever 30 which is supported by a bolt 31 of a further pressure stamp 29. The pressure stamps 22 and 29 are connected via an articulated lever 32. The lever 32 is mounted in a bolt 33 of a guide housing 34. In the present case, too, the individual pressure abutments adjust automatically to the respective bar split. It is not always possible to design the pressure abutment for the middle strip comb piece as shown in the exemplary embodiments in FIGS. 1 and 7, respectively. If, for example, strappy shoes are processed, it can happen that the straps are quite high up near the point of the inguinal crest. Also, when processing shoes with closed shafts, such as collar shoes, ankle boots, men's low shoes or the like, the pressure abutment cannot be designed as it corresponds to the above-mentioned exemplary embodiments. In such cases it is necessary to provide two pressure abutments 35 and 36 which act laterally on the last comb piece or on the shoe upper. Such pressure abutments are known per se. According to the embodiment of FIG. 8, the two pressure abutments 35 and 36 are connected to pressure rams 38 and 39, which in turn are coupled via a pendulum lever 37, which is mounted by means of a bolt 40 opposite the pressure ram 10 and the pressure ram 21, respectively. The plungers 38 and 39 can move in a housing 41 which is firmly connected to the plunger 10 or the plunger 21 via a connecting piece. A simpler design of such a double abutment is shown in FIG. 9. The pressure abutments 35 and 36 are combined in this case by a fork piece 43 by means of bolts 44 and 45. The fork piece 43 can be connected to the plunger 10 or the plunger 21, for example by means of a pin 46. From Fig. 6 it can be seen that a double strip comb abutment 35,36 can also be connected via pressure lines instead of via pendulum levers. The pressure abutment 35 is articulated on a pressure ram 10 ', the pressure abutment 36 on a pressure ram 10 ", the cylinder spaces 13' and 13" of which are connected via a line. The pressure bracket equipped with hydraulic means would therefore not consist of three, but of four cylinders 064, which are connected to one another by lines. In this case, the plunger and cylinder can also be arranged vertically. The embodiment according to FIG. 3 corresponds essentially to the embodiment according to FIG. 1, but has a further cylinder 47 in which a pressure ram 48 is guided, on which a pressure abutment 49 has been articulated. The pressure ram 48 is under the action of a spring 50 which automatically moves the pressure abutment 49 away from the shoulder when the pressure in the lines 7, 8 and 51 is relieved. The means for pressure relief are not shown. In this case, too, the pressure abutments adjust automatically to the respective shape of the last or shoe when subjected to pressure. While in the exemplary embodiment according to FIG. 1 the individual cylinders always remain connected through the lines 7 and 8 even during the printing process, the connection between the individual lines according to the exemplary embodiment according to FIG. 4 can be separated. If you use buckling strips, it can happen that the pressure abutment 16 gets more pressure than the pressure abutment 15 when the last is under pressure. Since the two cylinders 9 and 10 are connected by the line 7, the bar moves upwards at 52 and at 53 downwards, so that a hinge 54 is deformed. For this reason, a locking cylinder 55 is provided, which can separate the liquid or air columns in the cylinder spaces 12, 13 and 14. Appropriately, the locking cylinder 55 is controlled by the pressure medium influencing the pressing device, in such a way that the locking cylinder 55 blocks lines 56, 57 and 58 before the final pressure is exerted on the. When the pressure cushion is relieved, a separating piston 59, influenced by a spring 60, automatically returns to the starting position. In the embodiments described above, one must use a further cylinder to tension the shoe. According to the exemplary embodiment according to FIG. 5, this is no longer necessary. Here the three cylinders 3, 4 and 5 are fed from a common distributor 61 via lines 62, 63 and 64. In order to be able to relieve the shoe, a suction connection (not shown) can be provided on the distributor 61. In addition, springs can be arranged in cylinder chambers 65, 66 and 67 which, when the pressure in distributor 61 is lowered, lift pressure abutments 15, 16 and 17 in the direction of arrow 68 from the inserted shoe. It goes without saying that the features of the individual exemplary embodiments can be combined with one another; For example, it is possible to have a hydraulically influenced pressure cylinder attack one pressure abutment and to connect the other pressure abutments via a lever arrangement. Patent claims: 1. Pressing device for shoe glue presses with at least three pressure abutments, the lateral Distances adjustable and the height are adjustable in such a way that changes in the Altitude (s) of one or two pressure abutments also the altitudes of the other two or the Change the height of the third (changes), as well as with pressure stamps to absorb the pressing force,