CS205291B1

CS205291B1 - Pneumatic shooting device of cylindrical details,especially for screw machineries

Info

Publication number: CS205291B1
Application number: CS674176A
Authority: CS
Inventors: Karol Drobny
Original assignee: Karol Drobny
Priority date: 1976-10-20
Filing date: 1976-10-20
Publication date: 1981-05-29

Description

Vynález sa týká prevedenia pneumatického nastrelovača válcových súčiastok, najma pre skrutkovacie zariadenia, a jeho zapojenia.BACKGROUND OF THE INVENTION The present invention relates to an embodiment of a pneumatic cylindrical part gunner, in particular for screwing devices, and to its connection.

Pneumatický nastrelovač válcových súčiastok v spojení s ručnýra elektrickým alebo pneuaatickým skrutkovačom vytvoří skrutkovacie zariadenie pre montáž objemných výrobkov skrutkovaním v lubovolnej polohe.A pneumatic cylindrical component nail in conjunction with a hand-held electric or pneumatic screwdriver creates a screwing device for mounting bulky products by screwing in any position.

Doteraz známe nastre1ovacie zariadenie pozostáva z diferenciálneho piesta pre otváranie kanála tlakového vzduchu nad piestom pracovného valea. Piestnicou tohoto valea je zubový hrebeň zapadajúcí do zubového kolesa připevněného na konci dutého hriadela. Druhý koniec dutého hriadela je otvorený a uprostřed je umiestnené okienko pre naloženie skrutky. Přesunutím pracovného piesta zubový hrebeň pootočí dutým hriadelom o 180°, Tak sa přepojí okienko dutého hriadeTa s otvorom tlakového vzduchu, ktorý vytlačí skrutku hadicou do čelustí pracovného nástroja. Přivedením tlakového vzduchu pod piest pracovného valea, zubový hrebeň pootočí dutý hriadel do východzej polohy pre naloženie dalšej skrutky. Ďalšie známe zariadenie na nastrelovanie válcových súčiastok pozostáva z nosného telesa, obsahujúceho pracovny válec s diferenciálnym piestom, ktorého podstata spočívá v tom, že vo vedení je umiestnené vodiace pouzdro, v ktorom je uložená dutá piestnica, pričom medzi vedením a vonkajšou stěnou dutej piestnice je vytvořená nastre I ovacia komora.The prior art injection device consists of a differential piston for opening the compressed air duct above the working piston. The piston rod of this barrel is a rack which engages a gear mounted at the end of the hollow shaft. The other end of the hollow shaft is open and a screw loading window is located in the middle. By moving the working piston, the tooth rack rotates the hollow shaft 180 °, thus connecting the hollow shaft window with the compressed air opening, which pushes the screw through the hose into the jaws of the working tool. By applying compressed air under the working piston, the toothed rack rotates the hollow shaft to the starting position for loading another bolt. Another known device for firing cylindrical components consists of a support body comprising a working cylinder with a differential piston, the principle being that a guide sleeve is housed in the guide in which the hollow piston is mounted, and a guide sleeve is formed between the guide and the outer wall. adjustment chamber.

Obidve uvedené zariadenia sú náročné na presnosč výroby a válcovité tesnenie piestik.ov. Ich prevádzka sa prejavuje velkou spotřebou tlakového vzduchu, pretože objem tlakového vzduchu z expanznej nádobky je vypuštěný do atmosféry po vykonaní jediného úkonu. Zariadenia sú jednoúčelové, pretože pre každý rozměr hlavy skrutky je potřebná výměna dutej piestnice. Spoíahlívosf týchto žariadení je znížená, pretože skrutka počas dopravy a nakladania mění svoju polohu. Zariadenia sú poměrně hlučné, sposobené tvrdými dorazmi piestov.Both devices are demanding in terms of manufacturing precision and cylindrical piston seals. Their operation results in a large consumption of compressed air because the volume of compressed air from the expansion vessel is discharged into the atmosphere after a single operation. The devices are single-purpose because the replacement of the hollow piston rod is required for each dimension of the screw head. The reliability of these devices is reduced as the screw changes its position during transport and loading. The devices are relatively noisy, caused by hard piston stops.

Vyššie uvedené nevýhody zmiernuje pneumatický uastrelovač válcových súčiastok, najmi pre skrutkovacie zariadenia podlá vynalezu, ktorého podstatou je, že v telese sú vedla seba vytvořené oddělovací válec, pomocný válec a nastrelovací válec. Oproti pddelovacieho valca je vytvořená oddelovacia komora, oproti pomocného valca je vytvořená pomocná komora a oproti na* strelovacieho valca je z jedného konca vytvořená nastrelovacia komora a z druhého konca expanz no-kompresná komora. V oddelovacom válci je uložený oddělovací plunžer β oddělovacím pieetom, zasahujúcim do oddelovacej komory. Na oddělovací plunžer je pevne uchytené Šmýkadlo. V pomoč* nom válci je uložený pomocný plunžer s pomocným piestom, zasahujúcim do pomocnej komory* Na drieku pomocného piesta je vytvořené prietokové vybranie. V nastrelovacom válci je uložený nastrelovací plunžer s nastrelovacím piestom. Na drieku nastrelovacieho piesta je vytvořené prepojovacie vybranie.The aforementioned disadvantages are alleviated by the pneumatic cylindrical fastener, especially for the screwing devices according to the invention, which is based on the fact that a separating cylinder, an auxiliary cylinder and a firing cylinder are formed side by side in the body. In contrast to the pddelovací cylinder, a separation chamber is formed, an auxiliary chamber is formed opposite to the auxiliary cylinder, and a shooting chamber is formed from one end and the expansion-non-compression chamber from the other end. A separating plunger β is received in the separating cylinder by a separating pie, extending into the separating chamber. The slide is firmly attached to the separating plunger. An auxiliary plunger with an auxiliary piston extending into the auxiliary chamber is disposed in the auxiliary cylinder. In the nail-in cylinder there is a nail-in plunger with a nail-in piston. A connecting recess is formed on the shaft of the firing piston.

Do podstaty vynálezu patří aj to, že nastrelovacia komora je jednak připojená na.pravý přívod tlakového vzduchu a jednak na pomocná komoru, ktorá je přepojená cez horný škrtiaci ventil na oddelovaciu komoru. Lavý přívod tlakového vzduchu je připojený na lavý koniee pomocného valca. Lavý koniee oddelovacieho valca je horným kanálom spojený cez prietokové vybranie pomocného piesta s pravým koncom pomocného valca. Pravý koniee pomocného valca je spojený středným kanálom s expanzno-kompresnou komorou, spojenou jednak s lavýra koncom nastrelovacieho valca a jednak cez dolný škrtiaci ventil s atmosférou. Nastrelovacia komora je spojená cez prepojovacie vybranie a dolný kanál so spojovacím otvorom. Do spojovacieho otvoru sú připojené oproti sebe přepadová rúrka a dopravná hadica.It is also an object of the invention that the firing chamber is connected both to the right supply of compressed air and to the auxiliary chamber which is connected via an upper choke valve to the separation chamber. The left compressed air supply is connected to the left end of the auxiliary cylinder. The left end of the separating cylinder is connected via the upper channel through the recess of the auxiliary piston to the right end of the auxiliary cylinder. The right-hand side of the auxiliary cylinder is connected by a central channel to the expansion-compression chamber, connected to the left side of the sniper by the end of the blasting cylinder and to the atmosphere via the lower throttle valve. The firing chamber is connected via a connection recess and the lower channel to the connection opening. The overflow pipe and the transport hose are connected to each other through the connection opening.

Pneumatickým nastrelovačom válcových súčiastok, najmi pre skrutkovacie zariadenia 8& docieli jeho automatický chod od jediného signálu. Konštrukčne je zariadenie jednoduché, nenáročné na utesnenie jednotlivých valcov. Velká spolahlivosť zariadenia je zaručená i pri nízkom tlaku vzduchu. Velkou přednostou nastrelovača podlá vynálezu oproti doteraz známým nastrelovačora je velmi malá spotřeba tlakového vzduchu.Pneumatic cylindrical parts nail guns, especially for screwdrivers 8 & 8, will automatically operate from a single signal. The construction is simple and easy to seal individual cylinders. High reliability of the device is guaranteed even at low air pressure. A great advantage of the nail gun according to the invention over the prior art nail gun is the very low pressure air consumption.

Na připojených výkresoch je znázorněné příkladné prevedenie pneumatického nastrelovača, kde na obr. 1 je nakreslený pozdížny rez zariadením vo východzej polohe, na obr. 2 je nakreslený pozdlžny rez zariadením v praeovnej polohe s impulzom tlakového vzduchu, pričom skrutka je šmýkadlom dopravená do prepadovej rúrky a na obr. 3 je nakreslený pozdížny rez zariadením v hlavnej praeovnej fáze, ked je skrutka nastrelená do dopravnej hadice.In the accompanying drawings, an exemplary embodiment of a pneumatic nail gun is shown. 1 is a longitudinal cross-sectional view of the device in the initial position; FIG. 2 is a longitudinal cross-sectional view of the device in a pronged position with a pulse of compressed air, the screw being transported through the slide into the overflow tube; and FIG. 3 is a longitudinal cross-sectional view of the apparatus in the main working phase when the screw is shot into the conveying hose.

Pneumatický nastrelovač válcových súčiastok, najmi pre skrutkovacie zariadenia pozostáva z telesa 1 /obr. 1/, v ktorom sú vedla seba vytvořené oddělovací válec 2^ pomocný válec 3* a nastrelovací válec 4. Na právej straně sú vytvořené oproti oddelovaciemu valcu 2, oddelovacia komora 1 1 , oproti pomocnému valcu 3^ pomocná komora 12 a oproti nastrelovaciemu valcu £ nastrelovacia komora 13 a z druhého konca expanzno-kompresná komora 22. V oddelovacom válci 2. je * uložený oddělovací plunžer 5^ s oddělovacím piestom β zasahujúcim do oddelovacej komory 11.The pneumatic nail gun of cylindrical components, in particular for screwing devices, consists of a body 1 / fig. 1, in which the separating cylinder 2, the auxiliary cylinder 3, and the firing cylinder 4 are arranged side by side. On the right side, the separating chamber 11, the auxiliary chamber 12 and the auxiliary cylinder 12 and the firing cylinder 6 are opposite. a firing chamber 13 and from the other end an expansion-compression chamber 22. A separating plunger 5 with a separating piston β extending into the separating chamber 11 is disposed in the separating cylinder 2.

V pomocnom válci 3 je uložený pomocný plunžer 6^ s pomocným piestom 9. zasahujúcim do pomocnej komory 12. Na drieku pomocného piesta 9 je vytvořené prietokové vybranie 30. V nastrelovacom válci 4 je uložený nastrelovací plunžer 2. s nastrelovacím piestom 10, zasahujúcim do nastrelovacej komory 13. Na drieku nastrelovacieho piesta 10 je vytvořené prepojovacie vybranie 31 .An auxiliary plunger 6 with an auxiliary piston 9 extending into the auxiliary chamber 12 is disposed in the auxiliary cylinder 3. A recess 30 is formed on the shaft of the auxiliary piston 9. A firing plunger 2 with a firing piston 10 extends into the firing piston. The interconnecting recess 31 is formed on the shaft of the firing piston 10.

Na oddělovací plunžer je pevne připojené šmýkadlo 26 posuvné uložené na hornej ploché telesa 1. Šmýkadlo 26 je ukončené odoberacím ložkom 16 zasahujúcim v lávej krajnej polohe do koncovky zásobníka 17 a v právej krajnej polohe nad přepadová rúrku 27 .The slide 26 is fixedly connected to the separating plunger slidingly mounted on the upper flat body 1. The slide 26 is terminated by a removal bed 16 extending in the leftmost position into the container end 17 and in the rightmost position above the overflow tube 27.

Přepadová rúrka 27 je uložená v telese vo zvislej polohe, ktorá vyúsťuje do spojovacieho otvoru 29 umiestneného v lávej spodnej časti telesa J_. Oproti prepadovej rúrke 27 v spojovacom otvore 29 je uložená dopravná hadica 25, ktorej druhý koniee vyúsťuje do čelustí skrutkovacíeho zariadenia /na výkresoch nezakreslené/. Pravý přívod tlakového vzduchu 14 je připojený na nastrelovaciu komoru 13, ktorá je přepojená s pomocnou komorou 12 a pomocná komora 12 je spojená cez horný škrtiaci ventil 18 s oddelovacou komorou 11 . Lavý přívod tlakového vzdu3The overflow pipe 27 is mounted in the body in a vertical position, which opens into a connection opening 29 located in the left bottom of the body 11. Opposite to the overflow pipe 27 in the connection opening 29 there is a conveying hose 25, the second horse of which flows into the jaws of the screwing device (not shown in the drawings). The right compressed air supply 14 is connected to the firing chamber 13, which is connected to the auxiliary chamber 12 and the auxiliary chamber 12 is connected to the separation chamber 11 via the upper choke valve 18. Left air inlet3

-lm 2 3 jv připojený na lavý koniec pomocného valca 3_. £avý koniec odde lovacieho valca 2_ je spojený horným kanálom 1 9 cez prietokové vybranie 30 pomocného piesta 9 striedavo s pravým kon com pomocného valca 3_ /obr. 1/ a pomocnou komorou 12 /obr. 2/. Pravý koniec pomocného valca 2 je středným kanálom spojený s expanzno-korapresnou komorou 22 , ktorá je spojená jednak s lavým koncom nasttelovacieho valca £ a jednak cez dolný škrtiaci ventil 21 s atmosférou. Nastreíovacia komora 13 je cez prepojovacie vybranie 31 /obr. 3/ spojená dolným kanálom 24 so spojovacím o tvorom 2 9.3m is connected to the left end of the auxiliary cylinder 3. The left end of the separating cylinder 2 is connected by the upper channel 19 via the flow recess 30 of the auxiliary piston 9 in alternation with the right end of the auxiliary cylinder 3 / FIG. 1) and the auxiliary chamber 12 / FIG. 2 /. The right end of the auxiliary cylinder 2 is connected by a central channel to the expansion-correction chamber 22, which is connected both to the left end of the starter cylinder 6 and to the atmosphere via the lower throttle valve 21. The adjusting chamber 13 is via a recess 31 / FIG. 3 / connected by a lower channel 24 with a connecting piece 2 9.

Tlakový vzduch je přivedený pravým prívodom tlakového vzduchu 14 /obr. 1/ do nastrelovacej komory 1 3 , pomocnej komory 1 2 a do oddelovacej komory 1 1 , kde tlačí na pravé celá nastreTovacieho piesta 1 0, pomocného piesta 2 ^a odd e lov ac i eho piesta 8, čím sa zaisťuje ich čelné utesnenie. Zároveň sa lavým prívodom tlakového vzduchu 23 privedie tlakový vzduch do lavého konca pomocného valca 2» kde presunie pomocný plunžer-6 spolu s pomocným piestom 2 doprava, pretože pomocný plunžer 6 je váčšieho prierezu ako pomocný piest 2· Tým sa přepojil tlakový vzduch z pomocnej komory 1 2 , ktorý prúdi cez horný kanál 1 9 do lavého konca odd e I ovac i e ho valca 2 /obr. 2/. Pretože príerez oddelovacieho plunžera 2 j^e váčší ako prierez oddělovačieho piesta 8, sú oba přesunuté doprava spolu so šraýkadlom 2 6, čím ea skrutka 28 v odoberacom ložku 16 dostane nad přepadová rúrku 2 7 . Skrutka 28 přepadne cez přepadová rúrku 27 až do doravnej hadice 2 5 , kde čaká na jej nastrelenie. V tomto okamihu sa zruší přívod tlakového vzduchu lavým prívodom tlakového vzduchu 2 3 , čím sa presunie pomocným piestom 2 pomocný plunžer h_ doIava /obr. 3/ a lavý koniec pomocného valca 2 J^e odvětraný cez lavý přívod tlakového vzduchu do atmosféry. Tým, že sa přesunul pomocný piest 2 dolava, jeho prietokové vybranie 30 přepojí horný kanál 19 so středným kanálom 20. Expandovaný tlakový vzduch je přivedený do expanzno-kompresnej komory 2 2 . Zároveň je tlakový vzduch v ex pa nz no-kom pr e s n e j komoře 2 2 ešte skomprimovaný tým, že oddělovací plunžer 2 J^e vrátený do lávej strany spolu so šmýkadlora 26 protitlakom oddelovacieho piesta 2· Přepadová rúrka 2 7 sa tak špodnou plochou šmýkadla 2 6 uzatvorí. Oddělovací piest 2 J^e přesunutý tlakovým vzduchom, ktorý sa nachádza v oddelovacej komoře ll. Oddělovací piest 2 P^ri tejto funkcií nemá žiadnu spotřebu tlakového vzduchu. Regulácia rychlosti oddelovacieho plunžera 2 ^so šmýkadlom 26 v obidvoch sraeroch sa prevádza horným škrtiacim ventilom 18 škrtenira tlakového vzduchu medzi oddelovacou komorou 1 1 a pomocnou komorou 1 2 , čím sa dosiahne tichý bezrázový chod nastre lovaca.The compressed air is supplied by the right compressed air supply 14 / FIG. 1) into the firing chamber 13, the auxiliary chamber 12 and the separation chamber 11, where it presses on the right-hand whole of the priming piston 10, the auxiliary piston 2 ^{and the} separation of the piston 8, thereby ensuring a front seal thereof. At the same time, the left compressed air supply 23 supplies compressed air to the left end of the auxiliary cylinder 2 where the auxiliary plunger 6 is moved along with the auxiliary piston 2 to the right, since the auxiliary plunger 6 is of larger cross section than the auxiliary piston. 12, which flows through the upper channel 19 to the left end of the separating cylinder 2 / FIG. 2 /. Because the cross sections of the separation of the plunger 2 j ^much larger than the cross section of the separating piston 8 are both moved to the right together with two 6 šraýkadlom to give e and the removing bolt 28 in the bed 16 reaches the overflow pipe 2 7th The screw 28 falls through the overflow pipe 27 to the delivery hose 25, where it awaits firing. At this point, the compressed air supply is canceled by the left compressed air supply 23, thereby moving the auxiliary plunger 2 to the left / FIG. 3 / and the left end of the auxiliary roll 2 I ^t is vented through the pressure air supply, left in the atmosphere. By moving the auxiliary piston 2 to the left, its flow recess 30 interconnects the upper channel 19 with the middle channel 20. The expanded compressed air is supplied to the expansion-compression chamber 22. At the same time compressed air in ex pa nz no-kom pr esnej chamber 2 2 further compressed by separating plunger 2 J ^e returned to the left side along with šmýkadlora 26 counterpressure separating piston 2 · Overflow pipe 2 7, and the lower surface of the slide 2 6 closed. Separating piston 2 J ^e moved with compressed air, which is located in the separation chamber II. Separating piston 2 P ^r and this function has no compressed air consumption. The speed control of the separating plunger 2 ^{with the} slide 26 in both shafts is provided by the upper throttle valve 18 of the compressed air throttle between the separating chamber 11 and the auxiliary chamber 12, thereby achieving a silent no-stroke operation of the firing.

Úspora tlakového vzduchu je dosiahnutá aj přesunutím oddelovacieho plunžera 2 dolava, ked objem tlakového vzduchu z oddelovacieho valca 2 ^{sa zn}ovu využívá po expanzii a skomprimovaηí na vykonanie ďalšej práce, a to presunutie nastrelovacieho plunžera 2 ^na pravú stranu /obr. 3/ Nastrelovac í plunžer 7_ presunie doprava aj nastrelovací piest 1 0, ktorý svojím přepojovacím vybráním 3 1 přepojí na s t r e lo va c iu komoru 1 3 s dolným kanálom 2 4 . Tým je tlakový vzduch přivedený do spojovacieho otvoru 22» odkial pósobí do prepadovej rúrky 27 a do dopravnej hadice 25 . Keďže hlava skrutky 28 tvoří v dopravnej hadici 25 akoby pohyblivý piestik, naraz tlakového vzduchu udělí skrutke 2 8 potrebnú rýchlosť na jej nastrelenie do čelustí s kr u t‘kova c i e ho zariadenia /'na obr. nezakreslené/. Doba fúkania tlakového vzduchu do dopravnej hadice 25 je stavitelná dolným škrtiacim ventilom 21» ktorým uniká do atmosféry skomprimovaný tlakový vzduch súčasne počas presunutia na s t r e I o vac i e ho plunžera 1_ s nastrelovacíra piestom 1 0 doprava /obr. 3/. Fúkanie tlakového vzduchu dolným kanálom 24 do dopravnej hadice 25 na nastrelenie skrutky 28 trvá tak dlho, dokedy sa vyrovná sila na čele na s tr e lovac i e ho plunžera 7_ zo stredného kanála 20 /respektive sila musí byť menšia/ so silou protitlaku na čelo nastrelovacieho piesta 10 z nastrelov aciej komory 1 3 . Protitlakom nastrelovací piest 10 uzatvorí dolný kanál 2 4 a presunie zároveň nastrelovací plunžer 7_ na lavú stranu, ktorý vytlačí zbytok expandovaného vzduchu cez expanzno-kompresnú komoru 22 a dolným škrtiacim ventilom 21 do atmosféry. Takto je zariadenie vo východzej polohe /obr. 1/ připravené na prevedenie ďalšieho cyklu.Saving of the compressed air is also achieved by moving the separating plunger 2 to the left, when the volume of compressed air from the separating cylinder 2 ^is reused after expansion and compression to carry out further work by moving the firing plunger 2 ^{to the} right side / fig. 3 / The firing plunger 7 also moves the firing piston 10 to its right, which by its switching recess 3 1 switches to the firing chamber 13 with the lower channel 24. Thereby, compressed air is supplied to the connection opening 22 'from where it acts into the overflow pipe 27 and the transport hose 25. Since the head of the screw 28 forms a moving piston in the conveying hose 25, it suddenly imparts to the screw 28 the necessary speed for firing it into the jaws of the tightening device (FIG. not shown /. The time of blowing the compressed air into the conveying hose 25 is adjustable by the lower throttle 21, which escapes the compressed compressed air into the atmosphere at the same time as it is moved to the centering plunger 7 with the piston 10 to the right / FIG. 3 /. The blowing of the compressed air through the lower passage 24 into the conveying hose 25 for firing the screw 28 lasts as long as the force at the front on the striking plunger 7 is equalized from the central passage 20 (or the force must be less) the piston 10 from the shot chamber 1 3. Upon pressure, the firing piston 10 closes the lower passage 24 and moves the firing plunger 7 to the left side, which expels the rest of the expanded air through the expansion-compression chamber 22 and the lower throttle 21 into the atmosphere. Thus, the device is in the initial position / fig. 1 / ready for the next cycle.

Claims

205291-1m 2 3 is connected to the left end of the auxiliary cylinder 3. The upper end of the separating cylinder 2 connected by the upper channel 19 through the flow recess 30 of the auxiliary piston 9 alternately with the right end of the auxiliary cylinder 3 / fig. 1) and auxiliary chamber 12 / FIG. 2 /. The right end of the auxiliary cylinder 2 is connected to the middle channel by an intermediate channel 22 which is connected to the left end of the firing cylinder 6 and to the lower throttle valve 21 to the atmosphere. The firing chamber 13 is through the interconnection recess 31 / fig. 3 / connected by the lower channel 24 to the connecting piece 2 9. The pressurized air is supplied by the right inlet of the compressed air 14 / fig. 1) into the firing chamber 11, the auxiliary chamber 12 and into the separation chamber 11, where it presses on the right the entire injection piston 10, the auxiliary piston 2 and the separating piston 8, thereby ensuring their premounting. At the same time, pressurized air 23 is fed to the left end of the auxiliary cylinder 2, where the auxiliary plunger 6 is moved along with the auxiliary piston 2 ° because the auxiliary plunger 6 is of greater cross section than the auxiliary piston 2. 1, which flows through the upper channel 19 to the left end of the separator 2 / FIG. 2 /. Since the cross-section of the separator plunger 2 is greater than the cross-section of the separator port 8, both of them are moved to the right along with the scrapper 26, whereby the screw 28 in the takeout bed 16 reaches over the overflow tube 27. The bolt 28 falls over the overflow pipe 27 until it reaches the stop hose 24, where it is waiting for it to shoot. At this point, the supply of the pressurized air supply to the pressurized air 23 is canceled, whereby the auxiliary plunger h_ to-Iava / fig. 3 / and the left end of the auxiliary cylinder 2 It is vented through the left-hand air pressure supply. By moving the auxiliary piston 2, the flow recess 30 passes through the intermediate channel 19 with the middle channel 20. The expanded compressed air is supplied to the expansion-compression chamber 2 2. At the same time, the compressed air in the ex-chamber 2 is still complicated by the separator plunger 2 being returned to the left side together with the slipper 26 of the separating piston 2. The separating piston 2 is moved by the pressurized air contained in the separation chamber 11. The separating piston 2 has no compressed air consumption for this function. The regulation of the speed of the separator plunger 2 with the slide 26 in the two shafts is carried out by the upper throttle valve 18 of the compressed air throttle between the separating chamber 11 and the auxiliary chamber 12, whereby a silent run-free running of the shearing machine is achieved. Pressurized air savings are also achieved by moving the separator plunger 2, while the pressurized air from separator cylinder 2 is reused after expansion and compressed to carry out further work to move the firing plunger 2 to the right side (FIG. 1). 3 / The firing plunger 7 also moves the firing plunger 10 to its right, which, with its switching device 31, connects to the lower channel 18 with the lower channel. Thereby, the pressurized air supplied to the connection opening 22 ' is applied to the overflow bar 27 and to the transfer hose 25. Since the head of the screw 28 forms in the conveying hose 25 as a movable piston, the impact of the pressurized air imparts to the screw 28 the necessary speed to shoot it into the jaws of the twisting device (not shown) in the figure. The pressure of the compressed air flowing into the conveying hose 25 can be made via the lower throttle valve 21, the fluid leaking into the atmosphere compressed pressure air simultaneously while moving to the pressure of the plunger 1 with the piston 10 to the right / fig. 3 /. The flow of the pressurized air through the lower channel 24 into the conveying hose 25 on the firing bolts 28 lasts until the force at the forehead is aligned with the punching plunger 7 from the central channel 20 / or the force must be more rugged / with backpressure force on the face of the injection site 10 from the chamber 1 3. The counter-pressure piston 10 closes the lower channel 4 and at the same time moves the firing plunger 7 to the left side, which expels the rest of the expanded air through the expansion-compression chamber 22 and the lower throttle valve 21 into the atmosphere. 1 / ready for the next cycle. THE INVENTION

Pneumatic cylinder cutter, in particular for screwing devices, in which the cylindrical parts, for example screws, are brought in a row along a path, characterized in that a separating cylinder (2) formed in the body (1) is arranged adjacent to each other, an auxiliary cylinder (3) and a firing cylinder (4), wherein a separating chamber (12) is formed opposite the separating cylinder (2), and an auxiliary chamber (12) is formed opposite the auxiliary cylinder (3) and opposite the firing means (4) is formed at one end on the roofing chambers and (13) and from the other end on the expansion-compression chamber (22), while a separating plunger (5) is provided in the separating cylinder (2) with the separating piston (8) , extending into the separating chamber (11), wherein a scraper (26) is firmly attached to the separator plunger (5), an auxiliary plunger (6) is mounted in the auxiliary cylinder (6) with an auxiliary piston (9) extending into the auxiliary chamber (12), wherein on the shank the auxiliary a flow recess (30) is formed in the sand (9) and a shot plunger (7) with a piston (10) is disposed in the shot cylinder (4), and an interconnecting plunger (10) is formed on the shaft of the shot piston (10). recess (31).

2. A pneumatic gun according to claim 1, characterized in that its firing chamber (13) is connected to the right compressed air supply (14) and to the auxiliary chamber (12) via the upper throttle valve (18). on the separating chamber (11), wherein the melting air supply (23) is connected to the left end of the auxiliary cylinder (3), while the end of the separating cylinder (2) is connected via the throughflow recess (30) to the auxiliary a piston (9) alternately with the right end of the auxiliary cylinder (3) and with the auxiliary chamber (12), while the right end of the auxiliary cylinder (3) is connected by a central channel (20) to the expansion-compression chamber (22) connected to the lava end and through the lower throttle valve (21) with the atmosphere, wherein the firing chamber (13) is connected via an interconnecting device (31) and a lower channel (24) to the connecting hole (29) while the connecting opening (2.9) are attached to each other p paddle tube (27) and transport hose (25).

3 sheets of drawings Sr * pr «> are added. n p ·. Guide 7. M »i