CN210599641U

CN210599641U - Double-stroke diaphragm cylinder

Info

Publication number: CN210599641U
Application number: CN201921536976.5U
Authority: CN
Inventors: 高战
Original assignee: Bofann Automation Technology Co ltd
Current assignee: Guangdong Bofan Automation Technology Co.,Ltd.
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-22
Anticipated expiration: 2029-09-17

Abstract

The utility model relates to a cylinder product manufacturing technical field especially relates to a double-stroke diaphragm cylinder, including cylinder head, cylinder block and the second piston of setting between first piston, cylinder block and the cylinder block between cylinder head and cylinder block, the cylinder block sets up between cylinder head and cylinder block, be equipped with first gas port that connects on the cylinder head, it connects the gas port to be equipped with the second on the cylinder block, and first piston upper end is equipped with first diaphragm, and second piston upper end is equipped with the second diaphragm, seals to form first air cavity between first diaphragm and the cylinder head, seals to form the second air cavity between second diaphragm and the cylinder block. The utility model discloses, simple structure need not to add the spring in the cylinder, does not wear and tear, and the durability is strong, has solved traditional cylinder and needs sealing ring reciprocating motion, causes sealed easy wearing and tearing, and the complicated scheduling problem of structure adopts the two-stroke design, and multiunit action combination uses in a flexible way, can effectively prevent the trouble because of the cylinder stroke inefficacy brings.

Description

Double-stroke diaphragm cylinder

Technical Field

The utility model relates to a cylinder product manufacturing technical field especially relates to a double stroke diaphragm cylinder.

Background

The cylinder has variable length, is convenient to operate, particularly effectively completes linear motion, and is widely applied in various industries. The existing cylinder mainly comprises a piston, a piston rod and a cylinder body, wherein the piston is arranged in the cylinder body, one end of the piston rod is connected with the piston, most of the piston cylinders at the present stage adopt hard friction type cylinders, namely, a rubber 0-shaped ring or a K-shaped ring is sleeved on the piston to form a sealed cavity with the cylinder, friction can be generated between the cylinder body and a rubber sealing ring, the rubber part is easy to damage after a long time, air leakage and phenomena such as piston stretching and retracting delay occur, and the maintenance cost is greatly increased. Therefore, people expect to appear a cylinder product which has reliable operation performance, is maintenance-free and is suitable for being applied in the high-pressure and heavy-load fields, so as to overcome the defects and the defects that the conventional cylinder product needs regular maintenance and has a narrow application field, and further improve the performance and the quality of the one-way cylinder product.

The appearance of the diaphragm type cylinder solves the defects of a piston type cylinder, but the traditional diaphragm type cylinder mostly adopts a spring as a reset original element, has the patent number of CN201120206815.7 and is named as the Chinese utility model patent of the diaphragm type one-way cylinder, and comprises a pot-shaped cylinder body and a basin-shaped cylinder cover, wherein the cylinder body and the cylinder cover are fixedly connected by a plurality of bolts, and the center of the cylinder cover is provided with an air receiving port; elastic diaphragms are embedded in the edges of the cylinder body and the cylinder cover; a guide sleeve is arranged at the end part of the cylinder body, a piston rod is arranged in the guide sleeve, one end of the piston rod extends into a containing cavity formed by the cylinder body and the diaphragm, and the other end of the piston rod extends out of the guide sleeve; the end part of the piston rod, which is adjacent to the diaphragm, is provided with a spring seat, and a spring is arranged between the spring seat and the inner wall of the cylinder body, the spring is adopted as the reset power of the piston in the technology, when the cylinder works, the cylinder can move only by overcoming the counterforce of the spring, so that the output force of the cylinder is not stable, the creeping phenomenon exists, and when the cylinder returns, the cylinder is reset through the counterforce of the spring; because the sensitivity and the service life of the mechanical spring have own defects, the output force stability and the cylinder reaction sensitivity of the cylinder under the low-friction condition of the structure are not optimal. Therefore, the structure of the existing cylinder needs to be improved with space, and the practicability of the cylinder product is further improved.

Disclosure of Invention

In order to overcome the shortcoming that prior art exists above, the utility model aims at providing a two stroke diaphragm cylinder, cylinder are the diaphragm design, and simple structure need not to add the spring in the cylinder, and not wearing and tearing, the durability is strong, has solved traditional cylinder and needs sealing ring reciprocating motion, causes sealed easy wearing and tearing, and the complicated scheduling problem of structure adopts two stroke designs, and multiunit action combination uses in a flexible way, can effectively prevent because of the trouble that the cylinder stroke became invalid and bring.

In order to achieve the purpose, the utility model relates to a double-stroke diaphragm cylinder, including cylinder head, cylinder block and setting up the first piston between cylinder head and cylinder block, the second piston between cylinder block and the cylinder block, the cylinder block sets up between cylinder head and cylinder block, be equipped with first gas port on the cylinder head, be equipped with the second gas port on the cylinder block, first piston upper end is equipped with first double-deck gasket, be equipped with first diaphragm on the first double-deck gasket, first piston lower extreme is equipped with the recess and inserts the first piston hole that the cylinder block was equipped with; a second double-layer gasket is arranged at the upper end of the second piston, a second diaphragm is arranged on the second double-layer gasket, and the lower end of the second piston is inserted into a second piston hole arranged in the cylinder block; the first diaphragm edge and the second diaphragm edge are respectively arranged at the joint of the cylinder cover and the cylinder body and the joint of the cylinder seat and the cylinder body, and thickened beads for sealing are formed at the edges of the diaphragms; a first air cavity is formed between the first diaphragm and the cylinder cover in a sealed mode, and a second air cavity is formed between the second diaphragm and the cylinder body in a sealed mode.

Furthermore, in order to ensure that the diaphragm can drive the piston to move, the first double-layer gasket and the first diaphragm are screwed in a threaded hole A formed in the first piston through a first screw; and the second double-layer gasket and the second diaphragm are screwed in a threaded hole B formed in the second piston through a second screw.

Furthermore, in order to ensure the fixity of the diaphragm, the first double-layer gasket is composed of an upper gasket of the first double-layer gasket and a lower gasket of the first double-layer gasket, the second double-layer gasket is composed of an upper gasket of the second double-layer gasket and a lower gasket of the second double-layer gasket, and the first diaphragm and the second diaphragm are respectively arranged between the corresponding gaskets.

Furthermore, in order to ensure smooth air inlet of the air cavity, the first air receiving port is communicated with the first air cavity, and the second air receiving port is communicated with the second air cavity.

Further, in order to reduce the abrasion of the cylinder, a wear-resistant layer A is arranged on the inner wall of the first piston hole in the cylinder body.

Furthermore, in order to reduce the abrasion of the cylinder, a second piston hole is formed in the bottom of the cylinder seat, and an abrasion-resistant layer B is arranged on the inner wall of the second piston hole.

Preferably, four corners of the cylinder head, the cylinder block and the cylinder block are provided with corresponding screw holes and fixed with each other through fastening screws.

Furthermore, in order to reduce the obstruction of the movement of the piston, the bottom of the cylinder seat is provided with an air leakage hole

The utility model has the advantages that: a double-stroke diaphragm cylinder adopts a diaphragm type cylinder, avoids the reciprocating motion of a piston, has no friction action and no loss, has a simple structure, can realize reset motion without using a spring, and can not cause the reduction of sealing performance due to friction when a piston rod works, thereby greatly prolonging the maintenance period, even realizing maintenance-free, realizing double-stroke design, controlling three states, adjusting strokes, combining and flexibly using a plurality of groups of actions, and effectively preventing troubles caused by the failure of the stroke of the cylinder; the diaphragm passes through cylinder body contact position as the fixed point, has the advantage that the steadiness is good and the gas tightness is good. Can effectively solve the defects of the existing products in the existing market.

Drawings

For the purpose of illustration, the invention is described in detail with reference to the following preferred embodiments and the accompanying drawings.

Fig. 1 is a schematic view of the double-stroke diaphragm cylinder and the double-cylinder closing of the present invention;

fig. 2 is an exploded view of a dual stroke diaphragm cylinder of the present invention;

FIG. 3 is a front view of a dual stroke diaphragm cylinder of the present invention;

fig. 4 is a bottom view of a dual-stroke diaphragm cylinder of the present invention;

FIG. 5 is the utility model discloses a two cylinders of two stroke diaphragm cylinder open schematic diagram entirely

FIG. 6 is the utility model discloses a two cylinders of two stroke diaphragm cylinder half-open schematic diagrams

In the figure: 1-cylinder cover, 11-first air port, 2-cylinder body, 21-second air port, 22-wear-resistant layer A, 23-first piston hole, 3-cylinder seat, 31-second piston hole, 32-screw hole, 33-air leakage hole, 34-wear-resistant layer B, 4-first piston, 41-first double-layer gasket, 411-first double-layer gasket upper gasket, 412-first double-layer gasket lower gasket, 42-first membrane, 43-groove, 44-first screw, 45-threaded hole A, 5-second piston, 51-second double-layer gasket, 511-second double-layer gasket upper gasket, 512-second double-layer gasket lower gasket, 52-second membrane, 53-second screw, 54-threaded hole B, 6-first air cavity, 7-second air cavity, 8-fastening screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows: as shown in fig. 1, 2 and 3, a double-stroke diaphragm cylinder comprises a cylinder head 1, a cylinder block 2, a cylinder block 3, a first piston 4 arranged between the cylinder head 1 and the cylinder block 2, and a second piston 5 arranged between the cylinder block 2 and the cylinder block 3, wherein the cylinder block 2 is arranged between the cylinder head 1 and the cylinder block 3, the cylinder head 1 is provided with a first air inlet 11, the cylinder block 2 is provided with a second air inlet 21, the air inlet is used for connecting an external compressed gas pipeline and filling or discharging gas into or out of a gas cavity, the upper end of the first piston 4 is provided with a first double-layer gasket 41, the first double-layer gasket 41 is provided with a first diaphragm 42, the first double-layer gasket 41 is composed of a first double-layer gasket upper gasket 411 and a first double-layer gasket lower gasket 412, the first diaphragm 42 is arranged between the upper gasket and the lower gasket, the gaskets are used for fixing and compressing the diaphragms, the first double-layer gasket 41 and the first membrane 42 are screwed in a threaded hole A45 formed in the first piston 4 through a first screw 44, a groove 43 is formed in the lower end of the first piston 4 and is inserted into a first piston hole 23 formed in the cylinder block 2, and a wear-resistant layer A22 is arranged on the inner wall of the first piston hole 23; a second double-layer gasket 51 is arranged at the upper end of the second piston 5, a second membrane 52 is arranged on the second double-layer gasket 51, the second double-layer gasket 51 consists of a second double-layer gasket upper gasket 511 and a second double-layer gasket lower gasket 512, the second membrane 52 is arranged between the upper gasket and the lower gasket, the gaskets are used for fixing and pressing the membranes and play a role in orientation, and the membranes are made of canvas rubber and are in an inner ring shape; the second double-layer gasket 51 and the second diaphragm 52 are screwed into a threaded hole B54 formed in the second piston 5 through a second screw 53, and the lower end of the second piston 5 is inserted into the second piston hole 31 formed in the cylinder block 3; the edge of the first diaphragm 42 and the edge of the second diaphragm 52 are respectively arranged at the joint of the cylinder cover 1 and the cylinder body 2 and the joint of the cylinder seat 3 and the cylinder body 2, thickened beads for sealing are formed at the edges of the diaphragms, and the edges of the diaphragms are thickened and tightly pressed through the connecting positions of the cylinder cover, the cylinder body and the cylinder seat, so that the sealing property in an air cavity is better ensured; the first diaphragm 42 and the cylinder head 1 are sealed to form a first air cavity 6, the first air receiving port 11 is communicated with the first air cavity 6, the second diaphragm 52 and the cylinder body 2 are sealed to form a second air cavity 7, the second air receiving port 21 is communicated with the second air cavity 7, and compressed air is filled into the air cavity through the air receiving ports, so that the pressure in the air cavity is increased to drive the diaphragm to enable the piston to move downwards.

As shown in fig. 4, the bottom of the cylinder block 3 is provided with a second piston hole 31, the inner wall of the second piston hole 31 is provided with a wear-resistant layer B34, the wear-resistant layer B can effectively protect the cylinder block from abrasion with the second piston, and the wear-resistant layer B is made of a special material and has a small friction force to perform a lubricating function; cylinder block 3 bottom be equipped with disappointing hole 33, the air obstacle when the cylinder during operation can reduce the piston downstream with the air discharge between second piston and the cylinder block for the precision improves, be equipped with corresponding screw 32 on four angles of cylinder head 1, cylinder block 2 and cylinder block 3 and through fastening screw 8 reciprocal anchorage, the convenient fixed gas tightness that has also increased cylinder itself simultaneously of long screw is used in the four corners.

When the first air chamber 6 and the second air chamber 7 are simultaneously inflated as shown in fig. 5, the cylinder is in a fully opened state.

When the first air cavity 6 is fully opened, the first piston 4 moves downwards to push the second piston 5 to move downwards, and the air cylinder is in a half-open state at the moment

The working principle is as follows: the double-stroke cylinder can be fixed by fastening screws 8 on four corners in actual application and simultaneously ensures the air tightness of the cylinder, vent holes are respectively arranged on the cylinder cover 1 and the cylinder body 2, each vent hole is respectively connected with an air cavity, compressed air enters the air cavity through the vent holes and drives a membrane on a piston to move under the action of the internal air pressure so as to enable the piston to move, the vent holes can be inflated and simultaneously can also discharge the compressed air filled in the air cavity, when the air pressure is discharged, the air cavity is restored to the initial state under the action of the self elasticity due to the characteristics of the shape and the using materials of the membrane, and the piston is also restored to the original state along with the action of the self elasticity, the air cavity in the utility model consists of a first membrane 42, the cylinder cover 1, a second membrane 52 and the cylinder body 2, the membrane not only has the pressure-bearing function but also has the function of sealing the air cavity, and the, cylinder block 3 also is equipped with the hole that makes things convenient for the activity of second piston 5, it can guarantee the motion that the piston can be normal to all be equipped with the wearing layer on every hole inner wall and play lubricated sealed effect, cylinder block bottom still is equipped with an escape hole 33 simultaneously, be the gas in the convenient discharge second diaphragm 52 lower extreme space, avoid the interference to the precision of cylinder itself, first piston 4 is shorter and first piston 4 for second piston 5 contacts with second piston 5 for can be better, open the recess 43 that holds the screw on second piston 5 in first piston 4 bottom. The main advantages of the two air chambers are that there can be a plurality of combination modes, the filling amount of the compressed air can be controlled according to different requirements, the two air chambers are controlled in a grading way, the opening is slow when the grading control is carried out, the half opening is fast when the air cylinder is in a closed state when the compressed air is not filled, when the compressed air is filled into the first air chamber 6 and the second air chamber 7, the air cylinder is in a full open state, when the compressed air is filled into the first air chamber 6, the second air chamber 7 is not filled with air, the second piston 5 moves downwards to the position of the first piston 4 under the drive of the first piston 4, at the moment, the air cylinder is in a half open state, if the piston in one air chamber fails, the air cylinder can continue to work by the piston in the other air chamber, the inconvenience caused by the aging of the air cylinder can be effectively avoided, the traditional air cylinder needs to carry out reciprocating motion of the sealing ring, the structure is simple, the abrasion is avoided, and the durability is strong; the double-stroke design can control three states, and the stroke is adjustable.

The above description has been made in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and can be used only on the air cleaner, and within the knowledge of those skilled in the art, various changes can be made without departing from the present invention, and these changes relate to the related art known to those skilled in the art, and all fall within the protection scope of the present invention.

Claims

1. The utility model provides a two stroke diaphragm cylinder, includes cylinder head (1), cylinder block (2), cylinder block (3) and sets up first piston (4), second piston (5) between cylinder block (2) and the cylinder block (3) between cylinder head (1) and cylinder block (2), cylinder block (2) set up between cylinder head (1) and cylinder block (3), be equipped with first gas port (11) on cylinder head (1), be equipped with second gas port (21) on cylinder block (2), its characterized in that: a first double-layer gasket (41) is arranged at the upper end of the first piston (4), a first diaphragm (42) is arranged on the first double-layer gasket (41), a groove (43) is arranged at the lower end of the first piston (4), and the first double-layer gasket is inserted into a first piston hole (23) formed in the cylinder block (2); a second double-layer gasket (51) is arranged at the upper end of the second piston (5), a second membrane (52) is arranged on the second double-layer gasket (51), and the lower end of the second piston (5) is inserted into a second piston hole (31) formed in the cylinder seat (3); the edge of the first diaphragm (42) and the edge of the second diaphragm (52) are respectively arranged at the joint of the cylinder cover (1) and the cylinder body (2) and the joint of the cylinder seat (3) and the cylinder body (2), and thickened beads for sealing are formed at the edges of the diaphragms; a first air cavity (6) is formed between the first diaphragm (42) and the cylinder cover (1) in a sealing mode, and a second air cavity (7) is formed between the second diaphragm (52) and the cylinder body (2) in a sealing mode.

2. A two-stroke diaphragm cylinder as claimed in claim 1, wherein: the first double-layer gasket (41) and the first diaphragm (42) are screwed in a threaded hole A (45) formed in the first piston (4) through a first screw (44); the second double-layer gasket (51) and the second diaphragm (52) are screwed in a threaded hole B (54) formed in the second piston (5) through a second screw (53).

3. A two-stroke diaphragm cylinder as claimed in claim 2, wherein: the first double-layer gasket (41) is composed of a first double-layer gasket upper gasket (411) and a first double-layer gasket lower gasket (412), the second double-layer gasket (51) is composed of a second double-layer gasket upper gasket (511) and a second double-layer gasket lower gasket (512), and the first membrane (42) and the second membrane (52) are respectively arranged between the corresponding gaskets.

4. A two-stroke diaphragm cylinder as claimed in claim 1, wherein: the first air receiving opening (11) is communicated with the first air cavity (6), and the second air receiving opening (21) is communicated with the second air cavity (7).

5. A two-stroke diaphragm cylinder as claimed in claim 1, wherein: and a wear-resistant layer A (22) is arranged on the inner wall of the first piston hole (23).

6. A two-stroke diaphragm cylinder as claimed in claim 1, wherein: and a wear-resistant layer B (34) is arranged on the inner wall of the second piston hole (31).

7. A two-stroke diaphragm cylinder as claimed in claim 1, wherein: and the bottom of the cylinder seat (3) is provided with an air leakage hole (33).

8. A two-stroke diaphragm cylinder as claimed in claim 1, wherein: and four corners of the cylinder cover (1), the cylinder body (2) and the cylinder seat (3) are provided with corresponding screw holes (32) and are mutually fixed through fastening screws (8).