CS244995B1 - Bending jaw of the plate bending machine with overload protective device - Google Patents

Bending jaw of the plate bending machine with overload protective device Download PDF

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Publication number
CS244995B1
CS244995B1 CS85314A CS31485A CS244995B1 CS 244995 B1 CS244995 B1 CS 244995B1 CS 85314 A CS85314 A CS 85314A CS 31485 A CS31485 A CS 31485A CS 244995 B1 CS244995 B1 CS 244995B1
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CS
Czechoslovakia
Prior art keywords
bending
jaw
machine
crossbeam
protective device
Prior art date
Application number
CS85314A
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Czech (cs)
Slovak (sk)
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CS31485A1 (en
Inventor
Alexander Slanina
Silvester Tokar
Ivan Ilanovsky
Original Assignee
Alexander Slanina
Silvester Tokar
Ivan Ilanovsky
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Alexander Slanina, Silvester Tokar, Ivan Ilanovsky filed Critical Alexander Slanina
Priority to CS85314A priority Critical patent/CS244995B1/en
Publication of CS31485A1 publication Critical patent/CS31485A1/en
Publication of CS244995B1 publication Critical patent/CS244995B1/en

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Description

Vynález sa týká ohýbacej čeluste ohýbacieho stroja na plech s poistným zariadením proti preťaženiu.The invention relates to the bending jaw of a sheet metal bending machine with an overload protection device.

To sa dosiahne tým, že teleso ohýbacej čeluste je minimálně v dvoch miestach uložené na čapoch, z ktorých každý je votknutý do otočnej kulisy uloženej na čapě upevnenom v priečnom nosníku čeluste. Oba čapy v kulise sú voči sebe posunuté o hodnotu r, taikže na kulise vzniká od ohýbacej sily krútiaci moment. Obvod kulisy je opatřený výrezom, do ktorého je zasunutý koniec výkyvné uloženej páky, podopretej predpátým pružným silovým členom. Páka s pružným členom vyvodzuje protlsilu proti krútiacemu momentu na kulise a udržiava celé zariadenie v rovnováhe. Pri překročení nastavenej sily sa koniec páky vysunie z výřezu, kulisa sa pootočí a teleso ohýbacej čeluste sa posunie voči priečnemu nosníku.This is achieved in that the bending jaw body is supported at a minimum of two points on pins, each of which is engaged in a pivot bearing mounted on a pin mounted in the jaw cross member. The two pins in the link are offset relative to each other by the value r, so that torque is generated by the bending force on the link. The circumference of the slide is provided with a cut-out into which the end of the pivoted lever supported by a prestressed resilient force member is inserted. The lever with a resilient member generates counter-torque on the backdrop and keeps the whole machine in balance. When the set force is exceeded, the end of the lever is pulled out of the cut-out, the slide is rotated and the bending jaw body is displaced relative to the crossbeam.

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Predmetom vynálezu je ohýbacia čeiusť ohýbacieho stroja na plech so zariadením proti preťaženiu, ktoré chrání čeťusť i celý stroj proti silovému preťaženiu.It is an object of the present invention to provide a bending jaw for a sheet-bending machine with an overload device that protects the jaw and the entire machine against force overload.

Sú známe prevedenia ohýbacích četusti, ktoré sú vybavené lámacimi poistkami proti preťaženiu. Tieto poistky sú riešené tak, že pri překročení dovoleného zaťaženia důjde ik zlomeniu poistkových vložiek, cez ktoré je prenášaná ohýbacia sila zo samotnej četuste na rám stroja. Nevýhodou takéhoto riešenia sú vysoké náklady na výrobu poistkových vložiek, zdíhavá výměna zlomených vložiek za nové a potřeba opatovného zoraďovania stroja.There are known versions of bending jaws which are equipped with breaking safety devices against overloading. These fuses are designed in such a way that if the permissible load is exceeded, the fuse-links through which the bending force is transmitted from the jaw itself to the machine frame will be broken. The disadvantages of such a solution are the high cost of manufacturing fuse-links, the reluctant replacement of broken inserts for new ones, and the need for careful alignment of the machine.

Tieto' nevýhody odstraňuje riešenie podlá predmetu vynálezu, ktorého podstata spočívá v tom, že priečny nosník prestavitetne uchytený vo výkyvných ramenách ohýbacieho stroja nesie najmenej na dvoch čapoch výkyvné kulisy, na ktorých je pomocou dalších čapov upevněné samotné teleso ohýbacej četuste, a to tak, že je umožněné posunutie telesa ohýbacej četuste voči priečnemu nosníku. Poloha dvojice čapov na kulise je volená posunuté voči sebe v horizonálnom smere o vzdialenosť r, takže pri pdsobení ohýbacej sily sa na kulise vytvára krútiaci moment. Kulisa je opatřená výrezom, do ktorého zasahuje koniec výkyvné uloženej páky držanej v rovnováhe predpatým pružným silovým členom.These drawbacks are overcome by the solution according to the invention, which consists in that the transverse beam fixed in the swinging arms of the bending machine bears at least two pivots of the swinging blades on which the bending platen body itself is fixed by means of further pins. it is possible to move the body of the bending jaw relative to the crossbeam. The position of the pair of pins on the link is selected offset relative to one another in the horizontal direction by a distance r, so that when the bending force is applied, a torque is generated on the link. The slide is provided with a cut-out into which the end of the pivotally mounted lever held in balance by a biased resilient force member engages.

Zariadenie podl'a vynálezu zabraňuje pretaženiu pri malých výrobných nákladoch.The device according to the invention prevents overloading at low production costs.

Příklad vyhotovenia četuste ohýbacieho stroja na plech so zariadením proti preťaženiu podl'a predmetu vynálezu je znázorněný na připojených obrázkoch, kde obr. 1 představuje čiastočný rez ohýbacou čel'usťou v nezaťaženom stave a obr. 2 představuje priečny rez čeiusťou, ktorý je vyznačený na obr. 1 ako A—A.An example of an embodiment of the jaw of a sheet-bending machine with an anti-overload device according to the invention is shown in the accompanying drawings, where FIG. 1 is a partial cross-sectional view of the bending jaw in an unladen condition; and FIG. 2 is a cross-sectional view of the jaw shown in FIG. 1 as A-A.

Pokial’ ohýbacia sila posobiaca cez teleso ohýbacej četuste 1 a čap 3 na kulisu 4 nepřekročí stanovenu velkost, krútiaci moment, ktorý sa snaží pootočit klisu 4 okolo čapu 5 otočné uloženého v priečnom nosníku 2, je vyvážený pomocou predpatého pružného silového Člena 8 a výkyvné uloženej páky 6, ktorej koniec sa opiera o šikmú plochu výřezu 7 v kulise 4. Pri prekočení stanovenej sily, ktorú může ohýbacia če1'usť prenášať a ktorej vetkosť je daná vel'kosťou predpatia pružného silového člena 8, vznikne na kulise 4 taký velký krútiaci moment, že důjde k stlačeniu predpatého pružného^ silového člena 8, k nakloneniu výkyvné uloženej páky 8, ktorej koniec sa vysunie po· šilkmej opernej ploché výřezu 7, kulisa 4 sa pootočí okolo čapu 5 a koniec výkyvné uloženej páky sklzne po obvode kulisy 4, až sa zastaví na náběhu 9. Zároveň dochádza k posunutiu telesa ohýbacej čeluste 1 voči priečnemu nosníku 2, pričom pre tento posun nie je potřebný další nárast ohýbacej sily. Stav preťaženia je snímaný a pohon stroja je zastavený. Do původnej polohy sa celé zariadenie vráti po jeho odlahčení tak, že sa pomocou kl'úča otáča čapom 5, spolu s ktorým sa otáča aj kulisa 4 až sa koniec výkyvné uloženej páky 6 opat zasunie do výřezu 7 v kulise 4.As long as the bending force acting through the body of the bending jaw 1 and the pin 3 on the gate 4 does not exceed a predetermined size, the torque which attempts to rotate the pin 4 about the pin 5 rotatably mounted in the crossbeam 2 is balanced by a biased elastic force member 8 and pivoted A lever 6, the end of which rests on the inclined surface of the slot 7 in the gate 4. When the specified force which the bending member can transmit and whose magnitude is determined by the biasing of the resilient force member 8, such a high torque is generated. that the biasing force member 8 is compressed, the tilt lever 8 is tilted, the end of which is extended by a sloping abutment 7, the slider 4 is rotated around the pin 5 and the end of the tilt lever is slid along the periphery of the slider 4 until At the same time, the body of the bending jaw 1 is displaced relative to the crossbeam 2, p therefore, no further increase in the bending force is required for this shift. The overload condition is sensed and the machine drive is stopped. The entire device is returned to its original position after it has been unloaded by turning the pin 5 with the key, with which the slide 4 also rotates until the end of the pivoted lever 6 is inserted into the slot 7 in the slide 4.

Claims (2)

Ohýbacia čeiusť ohýbacieho' stroja na plech so zariadením proti preťaženiu, o-bsahujúca dve závěsné ramená nesúce priečny nosník, na ktorom je nasunuté teleso ohýbacej čeluste tak, že je možný vzájomný posuv telesa ohýbacej četuste voči priečnemu nosníku, pričom teleso ohýbacej četuste je uložené aspoň na dvoch čapoch, vyznačená tým, že každý z čapov (3), na ktorých je uložené teleso ohýbacej četuste, je votknutý do otočnej kulisy (4j uloženej na čapě (5j upevnenom v priečnom nosniku, pričom tieto čapy (3, 5] sú voči sebe posunuté v horizontálnom smere o vzidalenosť (rj a kulisa (4) je na obvode opatřená nábehom (9) a výrezom (7j, do ktorého je zasunutý koniec výkyvné uloženej páky (6), ktorá je podopretá predpátým pružným silovým členom (8).The bending jaw of a sheet-bending machine with an overload device comprising two suspension arms carrying a crossbeam, on which the bending jaw body is slid so that the bending jaw body relative to the crossbeam is displaceable, wherein the bending jaw body is at least supported on two pins, characterized in that each of the pins (3) on which the body of the bending platoon is mounted is engaged in a pivot (4j) mounted on a pin (5j fixed in the crossbeam, these pins (3, 5) being relative to is disposed in the horizontal direction of distance (rj and the link (4) is provided on the periphery with a lead-in (9) and a cut-out (7j) into which the end of the pivoted lever (6) is supported. 2 listy výkresov2 sheets of drawings
CS85314A 1985-01-17 1985-01-17 Bending jaw of the plate bending machine with overload protective device CS244995B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS85314A CS244995B1 (en) 1985-01-17 1985-01-17 Bending jaw of the plate bending machine with overload protective device

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Application Number Priority Date Filing Date Title
CS85314A CS244995B1 (en) 1985-01-17 1985-01-17 Bending jaw of the plate bending machine with overload protective device

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CS31485A1 CS31485A1 (en) 1985-11-13
CS244995B1 true CS244995B1 (en) 1986-08-14

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