SU903214A1

SU903214A1 - Safeguard device of press

Info

Publication number: SU903214A1
Application number: SU802939923A
Authority: SU
Inventors: Алексей Иванович Крылов; Иван Васильевич Белашков; Константин Александрович Голявин
Priority date: 1980-06-13
Filing date: 1980-06-13
Publication date: 1982-02-07

Description

Изобретение относится к области машиностроения.The invention relates to the field of engineering.

Известно предохранительное устройство пресса, содержащее закрепленный на станине неподвижный стол, а также привод и подвижный стол, установлен- 5 ный на наружной поверхности поршня гидравлического цилиндра, размещенного в ползуне и соединенного с источником давления.A press safety device is known comprising a fixed table fixed to the bed, as well as a drive and a movable table mounted on the outer surface of the piston of a hydraulic cylinder located in a slider and connected to a pressure source.

В известном устройстве при попа- ¹⁰дании в межштамповое пространство инородного тела пресс отключается при ходе ползуна вверх (i],In the known device, when ^{10 are} entered into the interstamp space of a foreign body, the press is turned off when the slide moves up (i],

Недостаток известного устройства заключается в том, что оба стола '5 (верхний и нижний) - плавающие. Это существенно усложняет конструкцию устройства и снижает его надежность ц долговечность.A disadvantage of the known device is that both tables' 5 (upper and lower) are floating. This greatly complicates the design of the device and reduces its reliability and durability.

Цель изобретения - повышение надежности и долговечности.The purpose of the invention is to increase reliability and durability.

Эта цель достигается за счет того, что предохранительное устройство прес— са, содержащее закрепленный на станине неподвижный стол, а также привод и подвижный стол, установленный на наружной поверхности поршня гидравлического цилиндра, размещенного в ползуне, снабжено втулкой с буртом, подвижный стол выполнен в виде фланца и размещенного в нем с возможностью осевого перемещения кольца, а в поршне гидравлического цилиндра выполнено центральное ступенчатое отверстие. Втулка с буртом установлена в ступенчатом отверстии поршня и закреплена на ползуне, а кольцо подвижного стола смонтировано с зазором относительно торца поршня и образует полость, соединенную с источником давления.This goal is achieved due to the fact that the press safety device containing a fixed table fixed on the bed, as well as a drive and a movable table mounted on the outer surface of the piston of the hydraulic cylinder located in the slider, is equipped with a collar with a collar, the movable table is made in the form the flange and placed in it with the possibility of axial movement of the ring, and in the piston of the hydraulic cylinder a central stepped hole is made. A collar with a collar is installed in the stepped bore of the piston and mounted on a slider, and the ring of the movable table is mounted with a gap relative to the end of the piston and forms a cavity connected to a pressure source.

Предохранительное устройство показано на чертеже.The safety device is shown in the drawing.

В станине 1 пресса смонтирован полузн 2 с расположенным на нем подвижным столом, состоящим из кольца 3 и фланца 4. Кольцо 3 центрируется на промежуточной втулке 5 и установлено относительно поршня 6 гидравлического цилиндра с зазором С| , образуя полость 7, заполненную воздухом· или жидкостью под давлением. Фланец 4 соединен с ползуном 2 винтами 8 и зафиксирован от проворота колонками 9. Для ограничения хода поршня 6 установлена втулка 10 с буртом, сквозь которую пропущена шпилька 11 для крепления гайкой 12 пуансонаIn the bed 1 of the press, a half-hook 2 is mounted with a movable table located on it, consisting of a ring 3 and a flange 4. The ring 3 is centered on the intermediate sleeve 5 and mounted relative to the piston 6 of the hydraulic cylinder with a clearance C | forming a cavity 7 filled with air · or liquid under pressure. The flange 4 is connected to the slider 2 by screws 8 and secured against rotation by the columns 9. To limit the stroke of the piston 6, a sleeve 10 with a shoulder is installed, through which a stud 11 is passed for fastening with the nut 12 of the punch

13. Втулка 10 гайкой 14 жестко кре«пится к ползуну 2. Кольцо 3 через двуплечий рычаг с плечами 15 и 16 взаимодействует с датчиком 17. На ползуне 2· установлен регулируемый упор 18, взаимодействующий с датчиком 19. На подвижном столе установлена нижняя половина штампа с элементами 20, 22 и 21. Между фланцем 4 и ползуном 2 размещены прокладки 23. Неподвижный стол 24 с элементами 25—30 верхней половины штампа жестко прикреплен к стакану 31, смонтированному в станине и образующему с поршнем 32 и штоком 33 камеру 34 противоприжима, заполненную жидкостью под давлением.13. The sleeve 10 with a nut 14 is rigidly pressed to the slider 2. The ring 3 interacts with the sensor through a two-arm lever with shoulders 15 and 16. On the slider 2 · an adjustable stop 18 is installed, which interacts with the sensor 19. The lower half of the die is installed on the movable table with elements 20, 22 and 21. Between the flange 4 and the slider 2, gaskets 23. A fixed table 24 with elements 25-30 of the upper half of the stamp is rigidly attached to the cup 31 mounted in the frame and forming a counter-pressure chamber 34 with the piston 32 and the stem 33, filled with liquid under pressure.

Предохранительное устройство работает следующим образом.Safety device operates as follows.

При работе с крупными штампг§ми удаляют прокладки 23, ив этом случае кольцо 3 и фланец 4 перемещаются синхронно.When working with large stamps, the gaskets 23 are removed, in which case the ring 3 and the flange 4 move synchronously.

При работе малогабаритными штампами фланец 4 через прокладки 23 жестко крепится к ползуну 2, и в качестве прижима используется только кольцо 3, опирающееся на поршень 6 после выборки зазора а.When working with small-sized dies, the flange 4 through the gaskets 23 is rigidly attached to the slider 2, and only the ring 3 is used as a clamp, resting on the piston 6 after the clearance a is selected.

При нормальной работе, когда на заготовке 35 нет инородного тела 36, ползун 2 движется вверх от упора 18 до смыкания верхний и нижней частей штампа. Первым срабатывает датчик 19, подающий команду разрешения на продолжение работы. После контакта заготовки с верхней и нижней частями штампа нагрузка возрастает, ползун 2 продолжает движение вверх, а фланец 4 (при работе с подвижным столом) или кольцо 3 (при работе с неподвижным столом) оста903214 4 ется на месте. При этом зазор а выбирается, и от кольца 3 через двуплечий рычаг 15, 16 срабатывает датчик 17, что дает дополнительную ко5 манду на продолжение работы пресса.During normal operation, when there is no foreign body 36 on the workpiece 35, the slider 2 moves upward from the stop 18 until the upper and lower parts of the stamp are closed. The sensor 19 is the first to trigger, giving a command to permit continued operation. After the workpiece contacts the upper and lower parts of the die, the load increases, the slider 2 continues to move up, and the flange 4 (when working with a movable table) or ring 3 (when working with a fixed table) remains in place. In this case, the gap a is selected, and the sensor 17 is activated from the ring 3 through the two-arm lever 15, 16, which gives an additional command to continue the operation of the press.

При вырубке жидкость из-под поршня 6 и из камеры 34 противоприжима вытесняется под давлением в бак. По окончании вырубки жидкость подается 10 в камеру 34. В результате готовая деталь выталкивается из матрицы 29, а подачей жидкости под поршень 6 заготовка 35 снимается с пуансоном 13.When cutting down the fluid from under the piston 6 and from the chamber 34 of the counter-pressure is displaced under pressure into the tank. At the end of cutting, the liquid is supplied 10 to the chamber 34. As a result, the finished part is pushed out of the matrix 29, and by supplying the liquid under the piston 6, the workpiece 35 is removed with the punch 13.

В аварийном случае, когда на за15 готовке 35 осталось инородное телоIn an emergency, when at 15 cooking 35 a foreign body remains

36, расстояние между элементами штампа 22 и 30 увеличивается/ при этом первым сработает датчик 17, запрещая дальнейшую работу пресса (пресс от~ 20 ключаётся).36, the distance between the elements of the stamp 22 and 30 increases / the sensor 17 will be the first to operate, prohibiting further operation of the press (the press is switched off from ~ 20).

Эффективность изобретения достигается за счет повышения надежности и долговечности устройства.The effectiveness of the invention is achieved by increasing the reliability and durability of the device.

Claims

The invention relates to the field of engineering. A safety press device is known that contains a fixed table fixed on a bed, as well as an actuator and a movable table mounted on the outer surface of a piston of a hydraulic cylinder placed in a slide and connected to the pressure source. In the known device, when a foreign body enters the interstitial space of the press, the press is turned off when the slide is moved upwards G fj. A disadvantage of the known device is that both tables (upper and lower) are floating. This significantly complicates the design of the device and reduces its reliability} i durability. The purpose of the invention is to increase reliability and durability. This goal is achieved due to the fact that a safety device, containing a fixed table fixed to the frame, as well as an actuator and a movable table mounted on the outer surface of the piston of a hydraulic cylinder placed in the slide, is provided with a collar with a collar, the movable table is designed as a flange and placed in it with the possibility of axial movement of the ring, and in the piston of the hydraulic cylinder there is a central stepped hole. A collar with a collar is mounted in a stepped bore of the piston and fixed to the slider, and the ring of the movable table is mounted with a gap relative to the end of the piston and forms a cavity connected to a pressure source. Safety device shown in the drawing. In the I frame of the press, a half 2 is mounted with a movable table located on it consisting of ring 3 and flange 4. Ring 3 is centered on the intermediate sleeve 5 and mounted relative to the piston 6 of the hydraulic cylinder with a gap d, forming a cavity 7 filled with air or pressurized fluid. The flange 4 is connected to the slider 2 by screws 8 and secured against turning by columns 9. To limit the stroke of piston 6, a sleeve 10 is installed with a collar through which a pin 11 is passed to fasten nut 12 of the punch 13. Sleeve 10 is rigidly attached to the slide 14

2. Ring 3 through a double-arm lever with shoulders 15 and 16 interacts with sensor 17. On the slider 2, there is an adjustable stop 18, which interacts with sensor 19. On the movable table is the lower half of the stamp with elements 20, 22 and 21. Between the flange 4 and a slider 2 placed gaskets 23 A stationary table 24 with elements 25-30 of the upper half of the stamp is rigidly attached to the glass 31, mounted in a frame and forming a pressure chamber 34 with a piston 32 and rod 33. The safety device operates as follows. When working with large stampings, the gaskets 23 are removed, in which case the ring 3 and the flange 4 move synchronously. When operating with small-sized dies, the flange 4 through the gaskets 23 is rigidly attached to the slider 2, and only the ring 3 supported on the piston 6 is used as a retainer after sampling the clearance a. In normal operation, when there is no foreign body 36 on slider 35, slider 2 moves upwards from stop 18 to the upper and lower parts of the die. The first sensor is triggered 19, giving the command permission to continue the work. After the workpiece contacts the upper and lower parts of the punch, the load increases, slider 2 continues to move up, and flange 4 (when working under the B-table) or ring 3 (when working with the non-selected table) remains in place. When this gap d is selected, and from the ring 3 through the double-arm lever 15, 16, the sensor 17 is activated, which gives an additional command to continue the work of the press. When cutting, the liquid from under the piston 6 and from the anti-pressing chamber 34 is displaced under pressure into the tank. At the end of the cutting, the fluid is supplied to the chamber 34. As a result, the finished part is pushed out of the matrix 29, and the fluid supply under the piston 6, the workpiece 35 is removed with the punch 13. In an emergency case, when the foreign body 36 remains on the workpiece 35, the distance between the punch 22 elements and 30 is increased / at the same time the first sensor 17 is activated, prohibiting further operation of the press (the press is turned off). The effectiveness of the invention is achieved by increasing the reliability and durability of the device. Claims of the Invention A press safety device containing a fixed table fixed on a bed, as well as a drive and a movable table mounted on the outer surface of a piston of a hydraulic cylinder placed in a slider and connected to a pressure source, which is designed to increase reliability and durability. , it is equipped with a collar with a collar, the movable table is made in the form of a flange and placed in it with the possibility of axial movement of the ring, and in the piston of the hydraulic cylinder is made centrally a stepped bore, the sleeve with collar mounted in the stepped bore and the piston fixed to the slide, and the movable table ring is mounted with clearance relative to the end face of the piston and forms gGolost connected to a pressure source. Sources of information taken into account during the examination 1. Swiss Patent No. 454577 Cl. B 30 V 15/28, 08.03.77 (prototype)

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