CS277308B6

CS277308B6 - Mechanism for adjusting the bottom dead center of the press roller

Info

Publication number: CS277308B6
Application number: CS50987A
Authority: CS
Inventors: Jan Doc Ing Csc Slavkovsky
Original assignee: Univ Slovenska Tech
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1993-01-13

Abstract

Podstatou riešenia, pozostávajúceho zo Šmýkadla (7) lisu s pevným dorazom (2) a so závitovkovej převodovky (4) tvorenej slimákom (3) a závitovkovým kolesom (5) je, že v mieste vedenia (9) ámýkadla (7) lisu je stojan (8) lisu upravený do tvaru dutého valca. Na jeho vonkajšej valcovej ploché je vytvořený závit, na ktorom je naskrutkovaná dorazová matica (6). Táto je cez žliabkovanie na jej vonkajšej valcovej ploché spojená so závitovkovým kolesom (5) závitovkovej převodovky (4)The essence of the solution, consisting of a press slide (7) with a fixed stop (2) and a worm gear (4) formed by a worm (3) and a worm wheel (5), is that at the point of the guide (9) of the press slide (7) the press stand (8) is shaped into a hollow cylinder. A thread is formed on its outer cylindrical surface, onto which a stop nut (6) is screwed. This is connected to the worm wheel (5) of the worm gear (4) through the grooves on its outer cylindrical surface.

Description

Oblast technikyField of technology

Vynález sa týká riešenia mechanizmu prestavenia dolnej úvrate válcového šmýkadla lisu.The invention relates to the solution of a mechanism for adjusting the lower dead center of a cylindrical slide of a press.

Súčasny stav techniky .Current state of the art.

V súčasnosti známe pneumatické a pneumomechanické lisy s válcovým šmýkadlom majú stálu dolnú úvrat šmýkadla obmedzenú zdvihom hnacieho priamočiareho pneumatického motora, alebo pevným dorazom vytvořeným na valcovom šmýkadle, ktorý dosadne na nepohyblivé vedenie šmýkadla v stojane lisu. Takéto riešenie je jednoduché, ale nevyhovuje automatizovanej montáži výrobkov, kde sa v niektorých prípadoch vyžaduje přestavit dolnú úvrat šmýkadla lisu. Podlá čs. autorského osvedčenia č. 220470, alebo podlá japonského patentového spisu č. 0226672 sú známe riešenia, ktorých spoločnou črtou je, že využívájú servosystém so závitovkou na změnu vzájomnej polohy šmýkadla a čapu spájajúceho ojnicu so šmýkadlom, čím sa obmedzí dolná úvrat šmýkadla. Přitom celý servosystém je uložený vo vnútri šmýkadla. Nevýhodou je možnost použitia len u rozměrnějších šmýkadiel.Currently known pneumatic and pneumomechanical presses with a cylindrical slider have a constant lower dead center of the slider limited by the stroke of a drive linear pneumatic motor, or a fixed stop formed on the cylindrical slider, which rests on a stationary guide of the slider in the press stand. Such a solution is simple, but is not suitable for automated assembly of products, where in some cases it is required to adjust the bottom dead center of the press slide. According to MS. author's certificate no. 220470, or according to Japanese Patent Laid-Open No. 0226672 are known solutions, the common feature of which is that they use a servo system with a screw to change the relative position of the slider and the pin connecting the connecting rod to the slider, thus limiting the bottom dead center of the slider. At the same time, the entire servo system is housed inside the slider. The disadvantage is the possibility of use only with larger sliders.

Uvedené nedostatky v podstatnej miere odstraňuje mechanizmus prestavenia dolnej úvrate válcového šmýkadla lisu podlá vynálezu, ktorý pozostáva zo šmýkadla lisu opatřeného pevným dorazom a uloženého vo vedení šmýkadla a zo závitovkovej převodovky tvorenej slimákom a závitovkovým kolesom, ktorá je pevne spojená so stojanom lisu a ktorého podstatou je, že stojan lisu je v mieste vedenia šmýkadla lisu upravený do tvaru dutého valca, na ktorého vonkajšej válcovéj ploché je vytvořený závit. Na tomto závite je naskrutkovaná dorazová matica, spojená cez žliabkovanie na jej vonkajšej válcovéj ploché so závitovkovým kolesom závitovkovej převodovky.These disadvantages are substantially eliminated by the mechanism for adjusting the lower dead center of the cylindrical slide of the press according to the invention, which consists of a press slide provided with a fixed stop and mounted in the slide guide and a helical gearbox formed by a screw that the press stand is arranged in the shape of a hollow cylinder at the location of the press slide guide, on the outer cylindrical surface of which a thread is formed. A screw nut is screwed onto this thread, connected via a groove on its outer cylindrical flat to the helical wheel of the helical gearbox.

Výhodou mechanizmu podlá vynálezu je možnost použitia hlavně pri šmýkadlách s malými rozmermi, kde dovnútra šmýkadla nie je možné vmontovat servosystém so závitovkou. Mechanizmus taktiež umožňuje automatizované a programové nastavenie dolnej úvrate šmýkadla lisu, ako aj dovoluje použit lis v automatizovanej montáži, hospodárné využit zdvih šmýkadla a tým znižovat spotřebu tlakového vzduchu.The advantage of the mechanism according to the invention is the possibility of use mainly with sliders with small dimensions, where it is not possible to mount a servo system with a screw inside the slider. The mechanism also allows automated and programmatic adjustment of the bottom dead center of the press slide, as well as allows the use of the press in automated assembly, economical use of the slide stroke and thus reduce the consumption of compressed air.

Objasnenie vykresouClarification by drawing

Na priloženom výkrese je v priečnom řeze znázorněný příklad vyhotovenia mechanizmu na prestavenie dolnej úvrate válcového šmýkadla lisu podlá vynálezu.The attached drawing shows in cross-section an example of an embodiment of a mechanism for adjusting the lower dead center of a cylindrical slide of a press according to the invention.

Popis konkrétného whoovenia vynálezuDescription of a particular whoovenia of the invention

Ako je znázorněné na priloženom výkrese, mechanizmus podlá vynálezu pozostáva z krokového motora s optoelektrickým čidlom 1, ktorý je spojený so slimákom 3. závitovkovej převodovky 4 pevne spojenej so stojanom 8 lisu. Šmýkadlo 2 lisu je opatřené pevným dorazom 2a je suvne uložené v stojane 2 lisu. V mieste vedenia šmýkadla 7 lisu je stojan 8 .lisu upravený do tvaru dutého valca, na ktorého vonkajšej ploché je vytvořený závit. Na tomto závite je naskrutkovaná dorazová matica 6,. Na jej vonkajšej valcovej ploché je vytvořené žliabkovanie, zapadajúce do žliabkovania závitovkového kolesa 5. závitovkovej převodovkyAs shown in the accompanying drawing, the mechanism according to the invention consists of a stepping motor with an optoelectric sensor 1, which is connected to a screw 3 of a helical gearbox 4 firmly connected to a press stand 8. The slide 2 of the press is provided with a fixed stop 2a and is slidably mounted in the stand 2 of the press. At the guide of the press slide 7, the press stand 8 is arranged in the shape of a hollow cylinder, on the outer flat of which a thread is formed. A stop nut 6 is screwed onto this thread. A groove is formed on its outer cylindrical surface, fitting into the groove of the helical wheel of the 5th helical gearbox.

Činnost mechanizmu podlá vynálezu je nasledovná. Rotor krokového motora s optoelektrickým čidlom 1 sa pootočí podlá příkazu riadiaceho programu v žiadanom zmysle zadanou frekvenciou otáčania o určený uhol. Rotačný pohyb sa prenesie na slimák 2 a závitovkové koleso 5 závitovkovej převodovky 4 a dalej prostredníctvom žliabkovania na dorazovú maticU 6, ktorá sa v dosledku toho pootáča. Pretože dorazová matica 6 je uložená na závite na vonkajšej válcovéj ploché stojana 2 lisu, jej pootáčaním na tomto závite sa zároveň výškovo přestavuje. Pretože šmýkadlo 7 lisu móže konat pohyb nadol len po dosadnutie pevného dorazu 2 na dorazovú maticu 6, změnou jej polohy voči pevnému stojanu 8 lisu sa nastaví potřebná dolná úvrat šmýkadla 2 lisu.The operation of the mechanism according to the invention is as follows. The rotor of the stepper motor with the optoelectric sensor 1 is rotated according to the command of the control program in the desired direction by the specified rotational frequency by a specified angle. The rotational movement is transmitted to the auger 2 and the helical wheel 5 of the helical gearbox 4 and further by means of a groove to the stop nut 6, which consequently rotates. Since the stop nut 6 is mounted on a thread on the outer cylindrical flat stand 2 of the press, by turning it on this thread it is also adjusted in height. Since the slide 7 of the press can only perform a downward movement after the fixed stop 2 has been seated on the stop nut 6, by changing its position relative to the fixed stand 8 of the press, the required lower dead center of the press slide 2 is set.

Priemvselná využitelnost ·Industrial usability ·

Mechanizmus podlá vynálezu možno využit na úplnú automatizáciu prestavenia dolnej úvrate válcového šmýkadla lisu v automatizované j prevádzke podlá vopred zvoleného programu.The mechanism according to the invention can be used for complete automation of the adjustment of the lower dead center of the cylindrical slide of the press in automated operation according to a preselected program.

Claims

The press slide 7 is provided with a press frame 8 in the form of a hollow cylinder, on the outside of which a thread is formed. A stop nut 6 is screwed onto this thread. The rotor of the stepper motor with the optoelectric sensor 1 is rotated according to the control program in the desired direction by the specified rotational frequency by a specified angle. The rotational movement is transferred to the slug 3, and the threaded wheel 5 of the worm gear 4 and further by the grooving to the stop nut 6 which, as a result of this rotation. Since the stop nut 6 is mounted on the thread on the outer cylindrical stand 8 of the press, by turning it at the same time it is also adjusted in height. Since the slide 7 can only move downward after the fixed stop 2 abuts the stop nut 6, by changing its position relative to the fixed press frame 8, the required lower slide slide is adjusted by the press. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The mechanism of the present invention can be used to fully automate the adjustment of the bottom of the press roller in automated operation according to a preselected program. PATENT REQUIREMENTS The mechanism for adjusting the lower cylinder of the slide slide, consisting of. a press slide provided with a fixed stop located in a slide guide and a worm gear formed by a slug and a screw wheel which is rigidly connected to the standby press, characterized in that the press stand (8) has slides (7) at the location (9) the press is in the form of a hollow cylinder, on whose outer cylindrical flat a thread is formed, on which the stop nut (6) is screwed through the groove on its outer cylindrical flat with the worm gear of the worm gear (4). 1 drawing