Pneumatic actuator with air switch-on and air switch-off functions simultaneously

Abstract

The utility model belongs to the technical field of application of pneumatic actuators, and particularly discloses a pneumatic actuator with air opening and air closing functions. Comprising an adjusting wire O-shaped ring, a right side cover, a left side cover, a side cover O-shaped ring, a cylinder body, a hexagon head bolt, an I-shaped hexagon nut, a hexagon socket cap screw, a flat gasket, a first air port, a second air port, a piston, a main shaft, a shaft elastic check ring, an under-shaft O-shaped ring, an under-shaft wear-resistant ring, an on-shaft metal gasket, an on-shaft gasket, an on-shaft O-shaped ring, an under-shaft gasket, an on-shaft wear-resistant ring, an under-shaft gasket, an air hole and an air hole plug. And the rack on the piston is in contact with the cylindrical gear of the main shaft. The utility model has the beneficial effects that one actuator simultaneously has two action modes of gas opening and gas closing, the stock of customers is reduced, the purchase cost is reduced, the action mode of the actuator can be changed without any modification, the professional technical requirements on operators are greatly reduced, and the operation is extremely simple and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic actuator applications, and particularly relates to a pneumatic actuator that simultaneously has air-to-open and air-to-close functions. Background Technique

[0002] Currently, when customers purchase pneumatic actuators, they often cannot identify the action form of the pneumatic actuator, resulting in the actuator not operating properly. As a result, they need to purchase a new one or return the factory to change the action form of the actuator again, which delays the production schedule and increases the procurement cost of the product.

[0003] Therefore, based on the above problems, the utility model provides a pneumatic actuator that simultaneously has air-to-open and air-to-close functions. Summary of the Utility Model

[0004] Purpose of the utility model: The purpose of the utility model is to provide a pneumatic actuator that simultaneously has air-to-open and air-to-close functions, and solve the technical problems existing in the current use of pneumatic actuators in the background technique, that is, in the same actuator, without changing any components of the actuator, the actuator can be changed from the air-to-open action form to the air-to-close action form in seconds, greatly reducing the inconvenience brought to customers by changing the action form of the actuator.

[0005] Technical solution: The pneumatic actuator of the utility model that simultaneously has air-to-open and air-to-close functions includes an adjusting screw O-ring, a right side cover, a left side cover, a side cover O-ring, a cylinder block, hexagon head bolts, I-type hexagon nuts, socket head cap screws, flat gaskets, a first air port, and a second air port. A piston is arranged in the cylinder block. A main shaft that cooperates with the piston is vertically arranged in the cylinder block. Axial retaining rings are arranged at both end faces of the main shaft. At both end faces of the main shaft and located inside the cylinder block, there are an under-axis O-ring, an under-axis wear-resistant ring, an upper-axis metal gasket, an upper-axis gasket, an upper-axis O-ring, a first under-axis gasket, an upper-axis wear-resistant ring, and a second under-axis gasket. A piston O-ring is arranged at the piston end face. An air hole is arranged inside one end of the cylinder block, and an air hole plug is arranged inside the air hole. Among them, the rack on the piston contacts the cylindrical gear of the main shaft.

[0006] In this technical solution, the pneumatic actuator that simultaneously has air-to-open and air-to-close functions further includes a tooth-back wear-resistant sheet arranged on the back of the main shaft gear. Among them, the contact surfaces between the tooth-back wear-resistant sheet and the inner wall of the cylinder block are respectively set as inclined surface structures.

[0007] In this technical solution, the pneumatic actuator that simultaneously has air-to-open and air-to-close functions further includes limit blocks symmetrically arranged inside the cylinder block and cooperating with the hexagon head bolts.

[0008] Compared with the prior art, the beneficial effects of the pneumatic actuator with both air-to-open and air-to-close functions of the present utility model are as follows: An actuator has both air-to-open and air-to-close forms of action, reducing the customer's stock inventory and procurement costs. Changing the action mode of the actuator can be achieved without any modification, greatly reducing the professional technical requirements for operators and making the operation extremely simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 is a schematic structural diagram of the pneumatic actuator with both air-to-open and air-to-close functions of the present utility model;

[0011] Figure 2 is Figure 1 the schematic structural diagram in the E-E direction of

[0012] Figure 3 is Figure 1 the schematic structural diagram in the F-F direction of

[0013] Figure 4 , Figure 5 are respectively schematic diagrams of embodiments of two control methods;

[0014] Among them, the serial numbers in the figure are as follows: 1 - O-ring under the shaft, 2 - O-ring of the adjusting screw, 1A - first air port, 2A - second air port, 3 - air hole plug, 4 - gasket on the shaft, 5 - piston, 6 - right side cover, 7 - left side cover, 8 - limit block, 9 - first gasket under the shaft, 10 - wear-resistant ring on the shaft, 11 - wear-resistant ring under the shaft, 12 - O-ring of the side cover, 13 - piston O-ring, 14 - O-ring on the shaft, 15 - metal gasket on the shaft, 16 - wear-resistant piece on the tooth back, 17 - cylinder block, 18 - main shaft, 19 - second gasket under the shaft, 20 - hexagon head bolt, 21 - I-type hexagon nut, 22 - socket head cap screw, 23 - shaft retaining ring, 24 - flat washer, 25 - air hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0016] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "rear", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment 1

[0017] Such as Figure 1 、 Figure 2 And Figure 3 As shown in, the pneumatic actuator with both air-to-open and air-to-close functions includes an adjusting screw O-ring 2, a right side cover 6, a left side cover 7, a side cover O-ring 12, a cylinder block 17, a hexagon head bolt 20, an I-shaped hexagon nut 21, an internal hexagon socket head screw 22, a flat washer 24, a first air port 1A and a second air port 2A.

[0018] A piston 5 is arranged inside the cylinder block 17.

[0019] A main shaft 18 that cooperates with the piston 5 is vertically arranged inside the cylinder block 17.

[0020] Shaft retaining rings 23 are arranged on the end faces at both ends of the main shaft 18.

[0021] On the end faces at both ends of the main shaft 18 and inside the cylinder block 17, there are arranged an under-axis O-ring 1, an under-axis wear-resistant ring 11, an on-axis metal gasket 15, an on-axis gasket 4, an on-axis O-ring 14, a first under-axis gasket 9, an on-axis wear-resistant ring 10, and a second under-axis gasket 19.

[0022] A piston O-ring 13 is arranged on the end face of the piston 5.

[0023] An air hole 25 is arranged inside one end of the cylinder block 17.

[0024] An air hole plug 3 is arranged inside the air hole 25.

[0025] Among them, the rack on the piston 5 contacts the cylindrical gear of the main shaft 18, and the piston rack meshes with the cylindrical gear to transmit torque. Embodiment 2

[0026] On the basis of Embodiment 1, the pneumatic actuator with both air-open and air-close functions further includes a tooth-back wear-resistant piece 16 arranged on the back of the teeth of the main shaft 18; among them, the contact surfaces between the tooth-back wear-resistant piece 16 and the inner wall of the cylinder block 17 are respectively set as inclined plane structures, which play a role in buffering and decelerating, and extend the service life of the pneumatic actuator. Embodiment 3

[0027] On the basis of Embodiment 1 or Embodiment 2, the pneumatic actuator with both air-open and air-close functions further includes limit blocks 8 symmetrically arranged in the cylinder block 17 and used in cooperation with the hexagon head bolts 20 to limit the movement range of the piston 5.

[0028] The structural principle or working principle of the pneumatic actuator with both air-open and air-close functions of this structure:

[0029] Please review as Figure 4 and Figure 5 :

[0030] When the actuator is placed as Figure 4 shown, when air enters from the first air port 1A, the air pressure pushes the piston (O-rings are assembled on the piston, side cover, and main shaft up and down to form a sealed space) to move left and right. The rack on the piston meshes with the cylindrical gear of the main shaft, driving the main shaft to rotate counterclockwise and outputting torque. At this time, the action form of the actuator is air-open type;

[0031] When the actuator is rotated 180° as Figure 5 shown, when air enters from the first air port 1A, the air pressure pushes the piston (O-rings are assembled on the piston, side cover, and main shaft up and down to form a sealed space) to move left and right. The rack on the piston meshes with the cylindrical gear of the main shaft, driving the main shaft to rotate clockwise and outputting torque. At this time, the action form of the actuator is air-close type.

[0032] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

Claims

1. A pneumatic actuator with both air-to-open and air-to-close functions, comprising an adjusting wire O-ring (2), a right side cover (6), a left side cover (7), a side cover O-ring (12), a cylinder block (17), hexagon head bolts (20), I-type hexagon nuts (21), socket head cap screws (22), flat washers (24), a first air port (1A) and a second air port (2A), characterized in that: A piston (5) is arranged inside the cylinder block (17). A main shaft (18) which is vertically arranged inside the cylinder block (17) and is used in cooperation with the piston (5) is provided. Circlips for shafts (23) are arranged on the end faces of both ends of the main shaft (18). On the end faces of both ends of the main shaft (18), and inside the cylinder block (17), there are arranged an under-shaft O-ring (1), an under-shaft wear-resistant ring (11), an on-shaft metal gasket (15), an on-shaft gasket (4), an on-shaft O-ring (14), a first under-shaft gasket (9), an on-shaft wear-resistant ring (10), and a second under-shaft gasket (19). A piston O-ring (13) is arranged on the end face of the piston (5). An air hole (25) is arranged inside one end of the cylinder block (17). An air hole plug (3) is arranged inside the air hole (25). Among them, the rack on the piston (5) contacts with the cylindrical gear of the main shaft (18).

2. The pneumatic actuator with both air-to-open and air-to-close functions according to claim 1, characterized in that: The pneumatic actuator with both air-to-open and air-to-close functions further comprises a tooth-back wear-resistant piece (16) arranged on the back of the teeth of the main shaft (18). Among them, the contact surfaces of the tooth-back wear-resistant piece (16) and the inner wall of the cylinder block (17) are respectively arranged as inclined plane structures.

3. The pneumatic actuator with both air-to-open and air-to-close functions according to claim 1, characterized in that: The pneumatic actuator with both air-to-open and air-to-close functions further comprises limit blocks (8) which are symmetrically arranged inside the cylinder block (17) and are used in cooperation with the hexagon head bolts (20).

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