EP1912780B1 - Presse a main comprenant une securite contre la surcharge et procédé de protection d'une presse a main - Google Patents

Presse a main comprenant une securite contre la surcharge et procédé de protection d'une presse a main Download PDF

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Publication number
EP1912780B1
EP1912780B1 EP06754698A EP06754698A EP1912780B1 EP 1912780 B1 EP1912780 B1 EP 1912780B1 EP 06754698 A EP06754698 A EP 06754698A EP 06754698 A EP06754698 A EP 06754698A EP 1912780 B1 EP1912780 B1 EP 1912780B1
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EP
European Patent Office
Prior art keywords
press
clutch
manually operated
shaft
force
Prior art date
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EP06754698A
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German (de)
English (en)
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EP1912780A1 (fr
Inventor
Peter Sutermeister
Hartmut Babiel
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Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
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Gebrueder Schmidt Fabrik fuer Feinmechanik GmbH and Co KG
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Publication of EP1912780A1 publication Critical patent/EP1912780A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/24—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by rack-and-pinion means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0094—Press load monitoring means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/10—Brakes specially adapted for presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/12—Clutches specially adapted for presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B30B15/142—Control arrangements for mechanically-driven presses controlling the brake or the clutch

Definitions

  • the invention relates to a hand-operated press.
  • a press according to the preamble of claim 1 and a method the preamble of claim 17 are known from DE 102 23 153 C1 known.
  • the invention further relates to a method for protecting such a press.
  • Hand-operated presses of the type described above are commonly used in chord workstations. Since the effort of manually pressing the press increases toward the end of the press stroke, some operators tend to expend too much force and thereby poorly work or even damage workpieces being compacted.
  • a press ram of the press is formed as a force transducer.
  • the force transducer has a force measuring system, such as a strain gauge (DMS) integrated.
  • DMS strain gauge
  • the DMS is in communication with a control device of the press, which in turn is, for example, connected to a rotary encoder in order to detect the angle of rotation of the actuating lever, and thus the path.
  • the control device evaluates the acquired data to be able to carry out the above-mentioned distinction between good and bad parts after the pressing process.
  • the press can automatically switch off while the bad part is still in the press. This is also done at the initiative of the controller.
  • the force is recorded as a function of the path in order to be able to carry out a quality assessment after a completed pressing operation (good / bad). Since the pressing process is carried out manually, each pressing operation is performed with different force. As a result, workpieces to be compacted are already sufficiently "good” with one another before reaching a mechanical end position of the press ram, or are in some cases only sufficiently available in the end position. In the case of an early arrival of the order, it would be desirable to be able to stop the pressing process before reaching the (mechanical) end position.
  • the return stroke lock is intended to prevent the operator from completing the joining process correctly, but rather initiating the return stroke process before reaching the end position of the press ram.
  • the remindhubsperre is mechanically formed in this known press in the form of a slotted guide.
  • a hand-operated press in which the return stroke is electronically formed.
  • a clutch is provided in a first embodiment, with which the shaft rotated by the actuating lever, the rotational movement is converted into the lifting movement of the press ram, fixed to the housing can be fixed.
  • the shaft is formed in two parts, and the coupling is designed as a disconnect clutch.
  • This known coupling has the disadvantage that only a function of a remindhubsperre is realized and that the press according to the second embodiment has a large dimension in the direction of the shaft.
  • the invention is therefore the object of developing a hand-operated press and a method of the type mentioned in such a way that the described problems are avoided.
  • a hand-operated press and a method are to be made available in which incorrect operation in terms of overload and in the sense of an inadmissible return stroke are differentiated prevented.
  • the press should have the smallest possible dimension in the direction of the shaft.
  • a hand-operated press with a shaft assembly which is formed at least in two parts, with an input shaft and an output shaft, wherein the input shaft extends as inner handle shaft through the output shaft designed as a hollow shaft, with a to the shaft assembly coupled actuator whose operation in a Lifting movement of a coupled to the shaft assembly press ram can be implemented, and with a coupling arrangement with two clutches, of which, depending on the pressing force and / or the relative position of the press ram, a first clutch as a lifting lock for fixing the input shaft and a second clutch as an overload clutch for interrupting a power flow between the input shaft and the output shaft is formed.
  • the power flow between the press ram and the operating lever can be interrupted at any time by the second clutch, in which the shafts are separated from each other. If a set pressing force is exerted even before reaching a (mechanical) end position of the pressing process, the waves can be separated from one another depending on this event. If an inadmissibly high pressing force is exerted during a pressing process, which could damage a force sensor or result in "badly" compressed workpieces, the waves can also be separated from one another, depending on these events.
  • a sensor for detecting the pressing force and / or a sensor for detecting the relative position of the press ram is or are provided.
  • a force measuring system of the press can be protected against overload. If only one sensor is provided for detecting the relative position of the press ram, it can be concluded from the distance traveled which pressing force was exerted, provided that all the further parameters required for this purpose, such as, e.g. Translation of the lever movement in press stroke, properties of the workpiece to be pressed, etc., are known.
  • both sensors are used in combination, this enables the recording of a force-displacement curve for each pressing process, so that a good / bad distinction can already be made during the pressing process. In particular, it can be determined when a "good” compression has occurred. If the force is recorded as a function of the path, it can be decided, for example by means of a higher-level control, that the pressing process is already stopped before reaching a (mechanical) end position of the press ram because a set pressing force has been achieved. In this way, "bad" grouting is generally avoided.
  • a corresponding control device is provided for this purpose, which is coupled to the first and / or the second sensor and to the clutches to output corresponding coupling signals to the clutches.
  • the controller senses the force sensor (s) to output clutch signals to the clutches in response to signals output from the sensors.
  • the control device preferably outputs a clutch signal according to which the second clutch remains closed when the detected pressing force or the relative position of the press ram is less than a predetermined limit value.
  • control device outputs a clutch signal for opening the second clutch, if the pressing force or the relative position of the press ram is greater than or equal to a predetermined limit value.
  • the limit value may either be a maximum allowable pressing force at which a force sensor is not damaged, and / or may be a minimum pressing stroke to be achieved in order to obtain a "good" pressing of the workpieces.
  • the control device has in particular means for determining whether a predetermined pressing force limit is exceeded or whether a set pressing force is reached. If the limit is exceeded, a signal for opening the second clutch is output. Thus, the power flow between the actuator and press ram is interrupted.
  • the first clutch acting as a lifting lock on a brake disc and a brake magnet.
  • the actuating lever is fixedly connected to the input shaft, so that a locking of the input shaft results in a locking of the actuating lever.
  • the brake disc in the form of a brake disc, which cooperates with a brake magnet, the brake disc is preferably rotatably connected to the input shaft, and the brake magnet is spatially fixed to the press. Since in this case the first clutch is an electrically operated brake device, the brake device can likewise be controlled by the control device already mentioned above by sending corresponding signals from the control device to the first clutch or its elements.
  • a third sensor for detecting the relative position of the input shaft is provided, wherein the brake disk can be configured such that the third sensor detects the relative position in cooperation with the brake disk.
  • a signal can be generated according to which the second clutch is closed, provided that the actuator is in its corresponding starting position.
  • the starting position can be detected by means of the brake disc or a brake disc flange, which is non-rotatably connected to the input shaft and thus also connected to the actuating member. This always ensures that the power flow is only produced between the actuating lever and the press ram when the actuating lever is in its initial position. This ensures that the traversable by the operating lever way needed to achieve a satisfactory pressing operation Presshub can perform.
  • the second clutch is not closed until the press ram is in its initial position. It is also advantageous if a restoring device, in particular a spring, is provided, which is coupled to the input shaft.
  • the actuating member is a hand lever.
  • the second sensor may be a linear incremental displacement measuring system that detects path markers coupled to the press ram.
  • the two shafts are additionally positively connected to each other by the second clutch to implement the lifting movement. Due to the additional positive connection, a mechanical overload protection can be realized with which spontaneously occurring overloads can be intercepted with (very) high intensity before they destroy a force sensor.
  • a toothing with detent position is preferably used, which is designed such that it automatically opens at a predetermined torque, which is exerted via the actuating member, from a closed state. The detent position is preferably reached when the waves are in their respective starting position.
  • Reference numeral 10 denotes a hand-operated press of basically known type.
  • the press 10 has a base part 12, which stands on a suitable substrate, for example. A workbench. From the base part 12, supports 14 lead upwards to a head part 16, which is also referred to as a slide, since the head part 16 is adjustable depending on the desired stroke in the direction of the supports 14. Laterally on the head part 16, an actuating lever 18 is mounted, which is connected to a mounted in bearings 20 in the slide 16 shaft 22. The shaft 22 can be rotated by means of the actuating lever 18 about its axis 24, as indicated by an arrow 26, wherein in Fig. 1 the initial position of the lever 18 is shown.
  • gear 28 is provided, which is a pinion-rack arrangement in the simplest case. This arrangement serves to implement the rotational movement of the shaft 22 in a direction indicated by the arrow 30 vertical lifting movement of a press ram 32.
  • the lower end face 34 of the press ram 32 presses on an upper workpiece 36 of a pair of workpieces 36, 38 which are to be pressed together.
  • the press 10 has a brake disk 40, which is non-rotatably connected to the shaft 22.
  • a second disc 42 is arranged, which is designed as a ring, so that the shaft 22 can be passed through the second disc 42.
  • the second disc 42 is rigidly connected to the slider 16, and is therefore hereinafter referred to as space-fixed.
  • the 44 denotes a first clutch with a brake magnet 45, which is electrically connected to an electronic control unit 46.
  • the electronic control unit 46 can be supplied via inputs 48 control signals from the outside, for example. From a numerical control unit to those in the DE 102 23 153 C1 revealed to realize electronic remindhubsperre. This function is also possible with the present press 10. For more details on the DE 102 23 153 C1 directed.
  • the lift lock formed by the first clutch 44 is characterized essentially by the magnetic coupling action of the electromagnet 45, which exerts this on the clutch plates 40 and 42.
  • this "magnetic brake” can also be realized by a pneumatic or hydraulic brake, which connects the two discs 40 and 42 non-positively to prevent rotation of the shaft 22 about its axis 24.
  • the press ram 32 may be provided with a force sensor 49, with which a respective acting pressing force can be detected.
  • the force sensor 49 is also connected to the electronic control unit 46.
  • the press ram 32 can serve as a force transducer for an integrated strain gauge (DMS).
  • DMS integrated strain gauge
  • the sensor 49 could also be located at another location, e.g. in the base part 12.
  • the press 10 is of conventional design.
  • the press 10 has a second (outer) hollow shaft 50, which is mounted coaxially with the shaft 22.
  • the first shaft 22 will be referred to hereinafter as the inner hand lever shaft, since it is passed through the outer hollow shaft 50.
  • the outer hollow shaft 50 is directly connected to a gear or provided with a pinion to realize the designated 28 gearbox.
  • the press ram 32 has a corresponding toothing 52, which meshes with the pinion or the toothed wheel of the outer hollow shaft 50.
  • the grip Gears of the hollow shaft 50 and the press ram 32 directly into each other. However, other gear elements could be interposed therebetween.
  • the outer hollow shaft 50 can be frictionally and / or positively connected to the inner hand lever shaft 22 with a second, preferably electromagnetic clutch 54.
  • the second clutch 54 is also connected to the controller 46.
  • the inner hand lever shaft 22 represents an input shaft, which is coupled by means of the coupling 54 to the outer hollow shaft 50, which serves as an output shaft.
  • the relative position of the hand lever shaft 22 can be determined.
  • the sensor 56 may also be connected to the control unit 46. Since the actuating lever 18 (like the disk 40) is firmly connected to the shaft 22, conclusions about the position of the lever 18 can thus also be drawn.
  • the controller 46 If it is determined that both the hand lever shaft 22 and the press ram are in their respective home positions from which a pressing operation can be started, the controller 46 outputs a signal to the second clutch 54 such that the second clutch 54 closes, i. the inner shaft 22 and the outer hollow shaft 50 are connected to each other at least non-positively. A power flow between the lever 18 and the press ram 32 is thus possible.
  • the lever 18 is rotated in the direction of the arrow 26 in order to press the workpieces 36, 38 together.
  • the lever 18, and thus also the press ram 32 eventually reaches its (electronic or mechanical) end position.
  • the mechanical end position is reached when the press ram has passed through the maximum possible pressing stroke or the lever 18 is moved against a corresponding mechanical stop.
  • the electronic limit position is reached when either the lever 18 has been rotated by a predetermined angle or when the press ram 32 has traveled a predetermined (stroke) way.
  • the electronic limit position could be detected on the one hand by the sensor 56 by the brake disk 40, e.g. in a region corresponding to the end position is designed such that the space-fixed sensor 56 can detect the end position.
  • the brake disk 40 may be formed in this area in the axial direction 24 more or less massive.
  • the electronic end position can also be defined so that a target pressing force (depending on the path of the press ram 32) has been achieved, ie, workpieces to be pressed have been pressed "well” together sufficiently.
  • a displacement measuring system 58 may be provided, which in Fig. 1 is shown schematically by a dashed line. The displacement measuring system 58 detects path markings 59 coupled to the press ram 32.
  • the controller 46 Upon reaching the end position, the controller 46 - depending on pressing force and / or founded on pressing force and / or foundedreciem stroke - cause the second clutch 54 to open, whereby the flow of force between the lever 18 and the press ram 32 is interrupted.
  • the plunger 32 can then in particular by a in the Fig. 1 Gas spring, not shown, are returned to its original position, which corresponds to the initial position of the lever 18. It is advantageous if the press ram 32 is coupled to the path marking 59 in order to be able to determine the relative position of the press ram 32, since conclusions about the press force achieved can be drawn from this information. By determining the relative Position of the press ram 32 can be further prevented that a subsequent pressing operation is performed before the press ram 32 is in its initial position.
  • This additional displacement measuring system 58 could be realized in the form of a linear incremental measuring system, e.g. has a resolution of 5 microns.
  • the path markings 59 can be scanned with the aid of a measuring head, which is preferably arranged in the head part 16 and is likewise connected to the control unit 46.
  • the brake disk 40 may be connected to a return device, in particular a spring (not shown).
  • the spring is then connected to the space-fixed head part 16. In the initial position, this spring is biased. In the final position, it is so tense that, should the operator release the lever 18, the lever 18 is automatically returned to its corresponding starting position.
  • the second clutch 54 should be open.
  • the second coupling 54 can be opened before reaching the end position of the pressing operation. In this case, the power flow between the lever 18 and the press ram 32 is interrupted. The force can no longer act on the force sensor 49. The force sensor 49 is thus protected against overload.
  • a prematurely completed pressing process that is rated as "good” can be ended. This means that the power flow is interrupted even if the pressing process is completed before reaching the end point.
  • the force exerted on the actuating lever 18 pressing force can by means of the sensor 49 through the (higher level) controller 46 are registered.
  • the controller 46 may include, for example, a suitably prepared microprocessor. If it is determined by the controller 46 based on a force-displacement measurement that the workpieces 36, 38 to be compacted are "good", the controller 46 interrupts the force flow between the lever 18 and the second clutch 54 by a corresponding signal Tappet 32. In this case, the distance measurement preferably takes place via the linear incremental displacement measuring system 58.
  • a pressing operation can also be stopped alone depending on the relative position of the press ram 32, without actually measuring the pressing force.
  • the force-displacement characteristic of the press is known, so that it can be determined solely on the basis of the stroke, if or when a "good" compression was achieved.
  • the first clutch 44 is preferably actuated first.
  • the force sensor 49 detects the pressure exerted on the lever 18 pressing force; the detected pressing force is sampled by the controller 46 at predetermined intervals; Subsequently, the control unit 46 determines whether an impermissibly high pressing force is present, which could damage the force sensor 49, for example by determining whether the detected pressing force is greater than or equal to a predetermined limit, or when a "good" compression of the workpieces 36, 38th occurred (eg a set pressure force reached) is; if the detected pressing force exceeds the predetermined limit, or if a target pressing force is achieved, the controller 46 preferably outputs a signal to the first clutch 44 first to more or less abruptly stop the movement of the lever 18; subsequently, a clutch signal is output to the second clutch 54 from the controller 46 to open the second clutch 54; the second clutch 54 opens; the power flow between the lever 18 and the press ram 32 is thus interrupted; Optionally, the brake can be released again.
  • the lever 18 can be moved to the mechanical stop, but without being in frictional connection with the press ram 32, so that the risk of damage to the force sensor 49 is excluded. Or the operator has already released the lever 18. If the operator has already released the operating lever 18 and the above-mentioned restoring device between the brake disk 40 and the head part 16 is provided, the lever 18 automatically returns to its original position.
  • the second clutch 54 When the press 10 is switched off, there is preferably no connection between the lever 18 and the press ram 32, which results in increased process reliability.
  • the second clutch 54 For a connection to be established, the second clutch 54 must first be energized. It will be understood, however, that the second clutch 54 could also operate in exactly the opposite way, i. the second clutch 54 could also be closed in the non-activated state, in which case the control unit 46 first interrupts the connection before a pressing operation can be carried out, and then performs the aforementioned check of the starting position. Thus, it is always ensured that the corresponding starting positions of the lever 18 and the press ram 32 are present at the beginning of a pressing operation.
  • a rack meshes with a pinion or a gear could also be a planetary gear, worm gear, chain drive, belt drive, bevel gear, a toggle, a shoe lever, a hydraulic transmission o. ⁇ . be used.
  • the inner hand lever shaft 22 and the outer hollow shaft 50 are not only frictionally, but also positively connected to each other.
  • Fig. 2 shows a highly schematic sectional view perpendicular to a coupling surface between the inner handle shaft 22 and the outer hollow shaft 50th
  • toothing 60 with detent position preferably comprises a single (detent) tooth 62, which is formed here with the outer hollow shaft 50, and a corresponding recess 64 in the inner hand lever shaft 22nd Fig. 2 represents a state in which the second clutch 54 (see FIG. Fig. 1 ) is open, so that the shafts 22 and 50 could be freely rotated against each other. Should the second clutch 54 close, the shafts 22 and 50 move relative to each other along the axis 24 so that the tooth 62 engages the recess 64.
  • tooth 62 could alternatively also be formed with the inner hand lever shaft 22 and the recess 64 with the outer hollow shaft 50.
  • a single pair of teeth and several pairs 62, 64 may be provided.
  • embodiments with only one (latching) tooth are preferred, as will be explained below.
  • the pair of teeth 60 may additionally be used to set the initial position of the press ram 32. This means that only when the shafts 22 and 50 are properly aligned, i. when the hollow shaft 50, and thus also the press ram 32, is in its initial position, the tooth 62 and the recess 64 can engage with each other. The press ram 32 is not (yet) in its initial position, no coupling between the shafts 22 and 50 is possible.
  • a magnetic force F M ( Fig. 3 ) required, for example, to move the outer hollow shaft 50 and its tooth 62 in the direction of the inner hollow shaft 22 and its recess 64.
  • the (closing) force F M of the coupling magnet can be decomposed with the aid of a force parallelogram into the two force components F E and F S1 , wherein F E represents the force of incidence acting along the imaginary line 66 and F S1 represents the force acting perpendicular to the tooth flank.
  • the inner hand lever shaft 22 is a rotational force F D transmitted to the outer hollow shaft 50, as also in Fig. 3 is shown.
  • the rotational force F D can in turn be broken down into two force components F A and F S2 , wherein F A represents the decoupling force and F X2 represents the force acting perpendicular to the tooth flank.
  • the decoupling force component F A is smaller than the coupling-in component F E.
  • the rotational force F D will suddenly increase, which results in an increase in the outcoupling force F A acting.
  • the force component F A greater than the force component F E then there is an opening of the toothing 60, although the clutch 54 is closed or not yet open.
  • the force at which the toothing 60 opens automatically depends on their sizes, in particular the flank angle ⁇ .
  • the second clutch 54 then acts as a mechanical overload clutch.
  • gearing e.g. also rolls or similar be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Claims (17)

  1. Presse (10) à main, avec un ensemble d'arbres (22, 50) réalisé au moins en deux parties, à savoir avec un arbre d'entrée (22) et un arbre de sortie (50), caractérisée en ce que l'arbre d'entrée (22) s'étend comme un arbre de levier à main intérieur au travers de l'arbre de sortie (50) réalisé comme un arbre creux, avec un organe d'actionnement (18) couplé à l'ensemble d'arbres (22, 50) dont l'actionnement peut être converti en un mouvement de levage (30) d'un coulisseau de presse (32) couplé à l'ensemble d'arbres (22, 50) et avec un ensemble de couplages (44, 54) présentant deux couplages, dont un premier couplage (44) est réalisé comme un blocage de levage pour fixer l'arbre d'entrée (22) et un second couplage (54) est réalisé comme un couplage de surcharge pour l'interruption d'une liaison à force entre l'arbre d'entrée (22) et l'arbre de sortie (50) en fonction de la force de compression et/ou de la position relative du coulisseau de presse (32).
  2. Presse à main selon la revendication 1, caractérisée en ce qu'un premier capteur (49) est prévu pour la détection de la force de compression.
  3. Presse à main selon la revendication 1 ou 2, caractérisée par un deuxième capteur pour la détection de la position relative du coulisseau de presse (32).
  4. Presse à main selon la revendication 2 ou 3, caractérisée par un dispositif de commande (46) couplé aux couplages (44, 54) et couplé au premier et/ou au deuxième capteur afin de transmettre des signaux de couplage aux couplages (44, 54).
  5. Presse à main selon la revendication 4, caractérisée en ce que le dispositif de commande (46) émet un signal de couplage pour maintenir fermé le second couplage (54) si la force de compression détectée ou la position relative du coulisseau de presse (32) est inférieure à une valeur limite prédéterminée.
  6. Presse à main selon la revendication 4 ou 5, caractérisée en ce que le dispositif de commande (46) émet un signal de couplage pour l'ouverture du second couplage (54) si la force de compression ou la position relative du coulisseau de presse (32) est supérieure ou égale à une valeur limite prédéterminée.
  7. Presse à main selon l'une quelconque des revendications précédentes, caractérisée en ce que l'organe d'actionnement (18) est relié de manière solidaire en rotation à l'arbre d'entrée (22).
  8. Presse à main selon l'une quelconque des revendications précédentes, caractérisée en ce que le coulisseau de presse (32) est en permanence en liaison active avec l'arbre de sortie (50).
  9. Presse à main selon l'une quelconque des revendications précédentes, caractérisée en ce que le premier couplage (44) comporte un disque de frein (40, 42) et un aimant-frein (45).
  10. Presse à main selon la revendication 9, caractérisée en ce que le disque de frein (40) est relié de manière solidaire en rotation à l'arbre d'entrée (22) et l'aimant-frein (45) est relié de manière stabilisée à la presse (10) de sorte que l'arbre d'entrée (22) puisse être bloqué.
  11. Presse à main selon la revendication 9 ou 10, caractérisée en ce qu'un troisième capteur (56) est de plus prévu pour la détection de la position relative de l'arbre d'entrée (22), sachant que le disque de frein (40) est configuré de telle manière que le troisième capteur (56) détecte la position relative en coopération avec le disque de frein (40).
  12. Presse à main selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un dispositif de rappel, en particulier un ressort, est de plus prévu, lequel est couplé à l'arbre d'entrée (22) afin de déplacer l'organe d'actionnement (18) dans une position de départ.
  13. Presse à main selon l'une quelconque des revendications précédentes, caractérisée en ce que l'organe d'actionnement (18) est un levier à main (18).
  14. Presse à main selon l'une quelconque des revendications 3 à 13, caractérisée en ce que le deuxième capteur est un système de mesure de déplacement (58) incrémental linéaire qui détecte des marquages de déplacement (59) couplés au coulisseau de presse (32).
  15. Presse à main selon l'une quelconque des revendications précédentes, caractérisée en ce que le second couplage (54) relie entre eux les deux arbres (22, 50) par complémentarité de formes afin de convertir le mouvement de levage (30).
  16. Presse à main selon la revendication 15, caractérisée en ce que la liaison par complémentarité de formes est obtenue à l'aide d'une denture (60) dotée d'une position d'encliquetage.
  17. Procédé destiné à protéger une presse à main selon l'une quelconque des revendications 1 à 16 de la surcharge, caractérisé par les étapes suivantes :
    a) fermer le second couplage (54) ;
    b) détecter une force de compression exercée par l'organe d'actionnement (18) ou une position relative du coulisseau de presse (32) ;
    c) déterminer si la force de compression détectée ou la position relative du coulisseau de presse (32) a atteint une valeur limite prédéterminée ; et
    d) si la valeur limite prédéterminée est atteinte, actionner le second couplage (54) afin de séparer au moins les deux arbres (22, 50) l'un de l'autre après la fermeture du premier couplage (44).
EP06754698A 2005-07-13 2006-07-10 Presse a main comprenant une securite contre la surcharge et procédé de protection d'une presse a main Active EP1912780B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005034424A DE102005034424B4 (de) 2005-07-13 2005-07-13 Handbetätigte Presse mit Überlastsicherung
PCT/EP2006/006717 WO2007006523A1 (fr) 2005-07-13 2006-07-10 Presse a main comprenant une securite contre la surcharge

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EP1912780A1 EP1912780A1 (fr) 2008-04-23
EP1912780B1 true EP1912780B1 (fr) 2012-05-02

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US (1) US7562622B2 (fr)
EP (1) EP1912780B1 (fr)
CN (1) CN101253039B (fr)
AT (1) ATE555897T1 (fr)
DE (1) DE102005034424B4 (fr)
ES (1) ES2384111T3 (fr)
WO (1) WO2007006523A1 (fr)

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DE102005034424B4 (de) 2005-07-13 2007-09-27 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Handbetätigte Presse mit Überlastsicherung
CN102476142B (zh) * 2010-11-26 2015-09-30 湖南晟通科技集团有限公司 一种无凹模连续冲压模具及其使用方法
US9808842B2 (en) 2011-08-18 2017-11-07 Justrite Manufacturing Company, L.L.C. Gas evacuation system with counter
DE102011083857A1 (de) * 2011-09-30 2013-04-04 Siemens Aktiengesellschaft Verfahren und Anordnung zur Bestimmung der Rotationsgeschwindigkeit von ferromagnetischen Bauteilen
CN103624999A (zh) * 2013-12-06 2014-03-12 中国农业大学 一种小型手动式牦牛粪便燃料化成型装置
DE102013114144B4 (de) * 2013-12-16 2017-09-14 Endress + Hauser Gmbh + Co. Kg Handpresse mit Überlastsicherung
US9845232B2 (en) * 2014-02-17 2017-12-19 Justrite Manufacturing Company, Llc Puncturing device for aerosol containers
US9993764B2 (en) 2014-04-01 2018-06-12 Justrite Manufacturing Company, Llc Filter for a propellant gas evacuation system
DE102014105021A1 (de) * 2014-04-09 2015-10-15 Endress + Hauser Gmbh + Co. Kg Handpresse zum Pressen, Fügen oder Montieren von Werkstücken
CN103921464B (zh) * 2014-04-18 2016-02-24 西安交通大学 一种斜齿少齿差行星齿轮传动电动伺服螺旋压力机
DE102014114299B4 (de) * 2014-10-01 2016-10-13 Ief-Werner Gmbh Nachrüstkit für Handhebelpressen, Verfahren zur Nachrüstung von Handhebelpressen und Handhebelpresse
DE102015000727A1 (de) * 2015-01-21 2016-07-21 mäder pressen GmbH Handhebelpresse mit Schutzfunktion
WO2016182976A1 (fr) 2015-05-08 2016-11-17 Campbell Michael C Filtre amélioré pour un système d'évacuation de gaz propulseur
USD798918S1 (en) 2015-11-25 2017-10-03 Justrite Manufacturing Company, L.L.C. Shield for puncturing device
CN107063528A (zh) * 2017-05-24 2017-08-18 力茨（江苏）机电装备有限公司 一种压装装置
DE102018117898A1 (de) * 2018-07-24 2020-01-30 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Presse mit Sensor zum Messen der Presskraft
DE102018124597B3 (de) 2018-10-05 2020-01-23 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Handbetätigte Presse
DE102018124596B4 (de) 2018-10-05 2021-01-14 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Handbetätigte Presse
CN109968729B (zh) * 2019-04-02 2020-10-09 苏州乐赢科技咨询有限公司 一种红点辅助定位压力机
CN109910356B (zh) * 2019-04-02 2020-10-09 苏州乐赢科技咨询有限公司 一种自锁压力机
CN109910357B (zh) * 2019-04-02 2020-10-16 苏州乐赢科技咨询有限公司 一种过载保护压力机
CN111804816A (zh) * 2020-07-17 2020-10-23 艾斯迪(天津)汽车零部件有限公司 铝铸件预压机
US11976909B2 (en) * 2020-07-22 2024-05-07 Amp Annealing Limited Case press
CN115320150B (zh) * 2022-10-12 2023-03-24 博格达智能装备(南通)有限公司 一种用于玻璃纤维隔板生产的压力机

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DE102005034424B4 (de) 2005-07-13 2007-09-27 Gebr. Schmidt Fabrik für Feinmechanik GmbH & Co. KG Handbetätigte Presse mit Überlastsicherung

Also Published As

Publication number Publication date
ATE555897T1 (de) 2012-05-15
EP1912780A1 (fr) 2008-04-23
US7562622B2 (en) 2009-07-21
CN101253039A (zh) 2008-08-27
US20080173191A1 (en) 2008-07-24
CN101253039B (zh) 2011-06-29
DE102005034424A1 (de) 2007-01-18
ES2384111T3 (es) 2012-06-29
WO2007006523A1 (fr) 2007-01-18
DE102005034424B4 (de) 2007-09-27

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