CN215762557U

CN215762557U - Bellows type rodless cylinder

Info

Publication number: CN215762557U
Application number: CN202121779803.3U
Authority: CN
Inventors: 樊瑜瑾; 何伟; 李浙昆; 刘剑雄
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-08
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to a corrugated pipe type rodless cylinder which comprises an end cover I, a corrugated pipe I, a piston, a cylinder barrel, an end cover II, a corrugated pipe II, a sliding block and a pin; one end of the cylinder barrel is provided with an end cover I, the other end of the cylinder barrel is provided with an end cover II, and a corrugated pipe I, a piston and a corrugated pipe II are sequentially arranged in an inner cavity of the cylinder barrel from left to right; the slider sets up in the cylinder upper end, and the pin passes slider and cylinder and with piston threaded connection in proper order. The utility model connects and fixes all parts into a whole through threaded connection, and compressed air is alternately introduced into the two corrugated pipes to drive the piston to move left and right, so that the sliding block connected with the piston is driven to move, and the effect of a rodless cylinder is achieved; the utility model has simple and compact structure, small occupied space without extending the piston rod outwards, no gas leakage in use and wide application in occasions with limited use space and higher gas leakage requirement.

Description

Bellows type rodless cylinder

Technical Field

The utility model relates to a bellows type rodless cylinder, and belongs to the technical field of pneumatic elements.

Background

The rodless cylinder is provided with a piston without a piston rod, and is connected with an external actuating mechanism in a direct or indirect mode by utilizing the piston and enables the piston to realize reciprocating motion along with the piston. The rodless cylinder is divided into a magnetic couple rodless cylinder and a mechanical contact type rodless cylinder, the cylinder has the greatest advantage of saving the installation space, and compared with the common cylinder, the installation space of 1/2 can be reduced under the same stroke, and the rodless cylinder is used as an actuating element in a pneumatic system. Rodless cylinders are commonly used in occasions with limited installation space, such as opening and closing doors of automobiles, subways and numerical control machines, mobile positioning of mechanical arm coordinates, machine tool feeding devices and the like. However, the existing rodless cylinder has the defect that the common magnetic coupling rodless cylinder has the influence of small magnetic force transmission driving force on load bearing capacity and working stability.

In view of the above, there is a need to develop a bellows type rodless cylinder to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a bellows type rodless cylinder, which has the advantages that compressed air is alternately introduced into two bellows to push a piston to move left and right to drive a sliding block connected with the piston to move, so that the effect of the rodless cylinder is achieved.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a corrugated pipe type rodless cylinder comprises an end cover I, a corrugated pipe I, a piston, a cylinder barrel, an end cover II, a corrugated pipe II, a sliding block and a pin;

one end of the cylinder barrel is provided with an end cover I, the other end of the cylinder barrel is provided with an end cover II, and a corrugated pipe I, a piston and a corrugated pipe II are sequentially arranged in an inner cavity of the cylinder barrel from left to right; the slider sets up in the cylinder upper end, and the pin passes slider and cylinder and with piston threaded connection in proper order.

Preferably, the end cover I is provided with a thread I, an inner hole I and an inner end surface I; the end cover II is provided with a thread II, an inner hole II and an inner end surface II; the cylinder barrel is provided with a thread III, a sliding groove, a thread IV and an inner wall;

the screw I is matched with the screw III, and the screw I and the screw III enable the end cover I to be in threaded connection with one end of the cylinder barrel; and the screw thread II is matched with the screw thread IV, and the screw thread II and the screw thread IV enable the end cover II to be in threaded connection with the other end of the cylinder barrel.

Preferably, the corrugated pipe I is provided with a bottom surface I, an inner cavity I, an end surface I and a vent hole I; the corrugated pipe II is provided with a bottom surface II, an inner cavity II, an end surface II and a vent hole II; the piston is provided with a piston end surface I, a cylindrical surface, a threaded hole and a piston end surface II;

the inner end face I is attached to the end face I, the bottom face I is attached to the piston end face I, the piston end face II is attached to the bottom face II, the end face II is attached to the inner end face II, the vent hole I penetrates through the inner hole I and is arranged on the outer side of the end cover I, the vent hole II penetrates through the inner hole II and is arranged on the outer side of the end cover II, and the cylindrical surface is in clearance fit with the inner wall.

Preferably, the sliding block is provided with a connecting hole, a top surface and a circular arc surface; the pin has a pin external thread;

the arc surface is attached to the outer wall of the cylinder barrel; the pin penetrates through the connecting hole and the sliding groove in sequence and is connected with the piston, the pin external thread is matched with the threaded hole, and the pin is in threaded connection with the piston through the pin external thread and the threaded hole.

The utility model has the beneficial effects that:

1. when compressed air is introduced into the air holes of the corrugated pipe I, the corrugated pipe I expands and extends to push the piston to move rightwards, so that the sliding block is driven to move rightwards, the pin slides in the sliding groove of the cylinder body, and the sliding groove of the cylinder body limits the stroke of the pin, so that the stroke of the sliding block is limited; when compressed air is introduced into the vent hole of the corrugated pipe II, the corrugated pipe II expands and extends to push the piston to move leftwards and drive the sliding block to move leftwards; compressed air is alternately introduced into the vent holes of the corrugated pipe I and the vent holes of the corrugated pipe II to enable the sliding block to move left and right, and the effect of the rodless cylinder is achieved.

2. The utility model has simple and compact structure, small occupied space without extending the piston rod outwards, no gas leakage in use and wide application in occasions with limited use space and higher gas leakage requirement.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an end cap I;

FIG. 3 is a schematic structural view of a bellows I;

FIG. 4 is a schematic view of the piston;

FIG. 5 is a schematic view of the cylinder barrel;

FIG. 6 is a schematic structural diagram of an end cover II;

FIG. 7 is a schematic structural view of a corrugated pipe II;

FIG. 8 is a schematic structural view of a slider;

fig. 9 is a schematic view of the structure of the pin.

The reference numbers in the figures are: 1-end cover I, 2-bellows I, 3-piston, 4-cylinder, 5-end cover II, 6-bellows II, 7-slide block, 8-pin, 11-thread I, 12-inner hole I, 13-inner end surface I, 21-bottom surface I, 22-inner cavity I, 23-end surface I, 24-vent hole I, 31-piston end surface I, 32-cylinder surface, 33-threaded hole, 34-piston end surface II, 41-thread III, 42-sliding groove, 43-thread IV, 44-inner wall, 51-thread II, 52-inner hole II, 53-inner end surface II, 61-bottom surface II, 62-inner cavity II, 63-end surface II, 64-vent hole II, 71-connecting hole, 72-top surface II, 71-connecting hole, 73-arc surface, 81-pin external thread.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, a bellows type rodless cylinder includes an end cover I1, a bellows I2, a piston 3, a cylinder 4, an end cover II5, a bellows II6, a slider 7, and a pin 8;

an end cover I1 is arranged at one end of the cylinder barrel 4, an end cover II5 is arranged at the other end of the cylinder barrel 4, and a corrugated pipe I2, a piston 3 and a corrugated pipe II6 are sequentially arranged in an inner cavity of the cylinder barrel 4 from left to right; the slider 7 is arranged at the upper end of the cylinder barrel 4, and the pin 8 sequentially penetrates through the slider 7 and the cylinder barrel 4 and is in threaded connection with the piston 3.

According to one embodiment of the utility model, referring to fig. 2, 5 and 6, the end cap I1 has threads I11, an inner bore I12 and an inner end surface I13; the end cover II5 is provided with a thread II51, an inner hole II52 and an inner end surface II 53; the cylinder barrel 4 is provided with a thread III 41, a sliding groove 42, a thread IV 43 and an inner wall 44;

the screw thread I11 is matched with the screw thread III 41, and the screw thread I11 and the screw thread III 41 enable the end cover I1 to be in threaded connection with one end of the cylinder barrel 4; the threads II51 mate with threads IV 43 and the threads II51 and threads IV 43 threadably connect end cap II5 to the other end of the cylinder 4.

According to an embodiment of the present invention, referring to fig. 3, 4 and 7, the bellows I2 has a bottom surface I21, an inner cavity I22, an end surface I23 and a vent hole I24; the corrugated pipe II6 is provided with a bottom surface II61, an inner cavity II62, an end surface II63 and a vent hole II 64; the piston 3 is provided with a piston end surface I31, a cylindrical surface 32, a threaded hole 33 and a piston end surface II 34;

the inner end face I13 is attached to the end face I23, the bottom face I21 is attached to the piston end face I31, the piston end face II34 is attached to the bottom face II61, the end face II63 is attached to the inner end face II53, the vent hole I24 penetrates through the inner hole I12 and is arranged on the outer side of the end cover I1, the vent hole II64 penetrates through the inner hole II52 and is arranged on the outer side of the end cover II5, and the cylindrical surface 32 is in clearance fit with the inner wall 44.

Referring to fig. 8 and 9, the slider 7 has a connecting hole 71, a top surface 72 and a circular arc surface 73; the pin 8 has a pin external thread 81;

the arc surface 73 is attached to the outer wall of the cylinder barrel 4; the pin 8 passes through the connecting hole 71 and the sliding groove 42 in sequence and is connected with the piston 3, the pin external thread 81 is matched with the threaded hole 33, and the pin external thread 81 and the threaded hole 33 enable the pin 8 to be in threaded connection with the piston 3.

The working principle of the utility model is as follows: when compressed air is introduced into the air vent I24 of the corrugated pipe I2, the corrugated pipe I2 expands and extends, the bottom surface I21 of the corrugated pipe I2 pushes the piston 3 to move rightwards, the pin 8 moves rightwards along with the piston 3 to drive the slider 7 to move rightwards, the pin 8 slides in the sliding groove 42 of the cylinder 4, and the sliding groove 42 of the cylinder 4 limits the stroke of the pin 8 so as to limit the stroke of the slider 7; when compressed air is introduced into the air vent II64 of the corrugated pipe II6, the corrugated pipe II6 expands and extends, the bottom surface II61 of the corrugated pipe II6 pushes the piston 3 to move leftwards, and the pin 8 moves leftwards along with the piston 3 to drive the slide block 7 to move leftwards; compressed air is alternately introduced into the air vent II24 of the corrugated pipe I2 and the air vent II64 of the corrugated pipe II6, so that the slide block 7 moves left and right, and the effect of a rodless cylinder is achieved. The utility model has simple and compact structure, small occupied space without extending the piston rod outwards, no gas leakage in use and wide application in occasions with limited use space and higher gas leakage requirement.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A bellows type rodless cylinder is characterized in that: comprises an end cover I (1), a corrugated pipe I (2), a piston (3), a cylinder barrel (4), an end cover II (5), a corrugated pipe II (6), a slide block (7) and a pin (8);

an end cover I (1) is arranged at one end of the cylinder barrel (4), an end cover II (5) is arranged at the other end of the cylinder barrel (4), and a corrugated pipe I (2), a piston (3) and a corrugated pipe II (6) are sequentially arranged in an inner cavity of the cylinder barrel (4) from left to right; the sliding block (7) is arranged at the upper end of the cylinder barrel (4), and the pin (8) sequentially penetrates through the sliding block (7) and the cylinder barrel (4) and is in threaded connection with the piston (3).

2. The bellows-type rodless cylinder according to claim 1, wherein: the end cover I (1) is provided with a thread I (11), an inner hole I (12) and an inner end surface I (13); the end cover II (5) is provided with a thread II (51), an inner hole II (52) and an inner end surface II (53); the cylinder barrel (4) is provided with a thread III (41), a sliding groove (42), a thread IV (43) and an inner wall (44);

the thread I (11) is matched with the thread III (41), and the thread I (11) and the thread III (41) enable the end cover I (1) to be in threaded connection with one end of the cylinder barrel (4); the screw thread II (51) is matched with the screw thread IV (43), and the screw thread II (51) and the screw thread IV (43) enable the end cover II (5) to be in threaded connection with the other end of the cylinder barrel (4).

3. The bellows-type rodless cylinder according to claim 2, wherein: the corrugated pipe I (2) is provided with a bottom surface I (21), an inner cavity I (22), an end surface I (23) and a vent hole I (24); the corrugated pipe II (6) is provided with a bottom surface II (61), an inner cavity II (62), an end surface II (63) and a vent hole II (64); the piston (3) is provided with a piston end surface I (31), a cylindrical surface (32), a threaded hole (33) and a piston end surface II (34);

the inner end face I (13) is attached to the end face I (23), the bottom face I (21) is attached to the piston end face I (31), the piston end face II (34) is attached to the bottom face II (61), the end face II (63) is attached to the inner end face II (53), the vent hole I (24) penetrates through the inner hole I (12) and is arranged on the outer side of the end cover I (1), the vent hole II (64) penetrates through the inner hole II (52) and is arranged on the outer side of the end cover II (5), and the cylindrical surface (32) is in clearance fit with the inner wall (44).

4. The bellows-type rodless cylinder according to claim 3, wherein: the sliding block (7) is provided with a connecting hole (71), a top surface (72) and an arc surface (73); the pin (8) has a pin external thread (81);

the arc surface (73) is attached to the outer wall of the cylinder barrel (4); the pin (8) sequentially penetrates through the connecting hole (71) and the sliding groove (42) and is connected with the piston (3), the pin external thread (81) is matched with the threaded hole (33), and the pin (8) is in threaded connection with the piston (3) through the pin external thread (81) and the threaded hole (33).