Receiver of pneumatic actuator

Abstract

The utility model discloses a reply device of a pneumatic actuator, which comprises a shell, a cavity is arranged in the shell, a cam shaft is rotatably connected in the cavity, the bottom of the cam shaft penetrates through the shell and extends to the lower side of the shell, an opening cam and a closing cam are mounted on the upper side of the cam shaft, and the cam shaft is further provided with a clamp spring ring on the lower side of the closing cam. A position feedback integrated wiring board is installed at the bottom of the inner side of the cavity, an opening position microswitch and a closing position microswitch are installed on the position feedback integrated wiring board, the opening position microswitch is provided with an opening position contact, the opening position contact is matched with the opening position cam in a contact mode, the closing position microswitch is provided with a closing position contact, and the closing position contact is matched with the closing position cam in a contact mode. According to the utility model, the connecting parts are connected by adopting the plug-in connector instead of the old spot welding connection, so that the plug-in connector can be connected more conveniently in a more complicated environment, the other problems caused by disconnection or temperature difference cannot be generated, and a more reliable and efficient connecting way is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of actuators, and in particular relates to a reply device of a pneumatic actuator. Background Art

[0002] The pneumatic actuator's responder is used to receive feedback information from the pneumatic actuator and send instructions to the pneumatic actuator. It needs to be set to the open or closed position before use so that the signals fed back by the cylinder, valve and travel switch are unified. The travel switch signal of the responder comes from the driving spindle of the pneumatic actuator. A switch cam is installed on the camshaft. The switch cam cooperates with the contacts of the travel switch. The drive actively drives the camshaft of the responder to rotate, so that the cam rotates until the high point of the cam squeezes the contact. The travel switch then feeds back the signal to the controller. The position of the switch cam on the camshaft relative to the travel switch, that is, rotate the switch cam so that the high point of the switch cam corresponds to the contact of the travel switch. At present, there are problems such as inconvenient spot welding of the micro switch circuit, which is easy to cause disconnection, and too long installation operation time. Utility Model Content

[0003] In view of the problems raised by the above background technology, the purpose of the utility model is to provide a reply device for a pneumatic actuator.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0005] A reply device for a pneumatic actuator comprises a shell, a cavity is provided in the shell, a camshaft is rotatably connected in the cavity, the bottom of the camshaft passes through the shell and extends to the lower side thereof, an opening cam and a closing cam are mounted on the upper side of the camshaft, the camshaft is also provided with a retaining spring ring on the lower side of the closing cam, a position feedback integrated wiring board is mounted on the bottom of the inner side of the cavity, an opening microswitch and a closing microswitch are mounted on the position feedback integrated wiring board, the opening microswitch is provided with an opening contact, the opening contact is in contact with and cooperates with the opening cam, and the closing microswitch is provided with a closing contact, the closing contact is in contact with and cooperates with the closing cam.

[0006] It is further defined that the opening cam and the opening micro switch are arranged on the upper side of the closing cam and the closing micro switch, and there is a platform gap between the opening cam and the closing cam. Such a structural design is convenient for installation and use.

[0007] It is further defined that the opening cam is provided with an opening cam elastic ring, the closing cam is provided with a closing cam elastic ring, and the opening cam elastic ring and the closing cam elastic ring are both arranged outside the camshaft. Such a structural design can fix the opening cam and the closing cam.

[0008] It is further defined that the camshaft is provided with a retaining spring ring, and the opening cam and the closing cam are arranged on the camshaft and fixed by the retaining spring ring. Such a structural design can achieve a fixing effect without affecting the rotation.

[0009] It is further defined that the position feedback integrated wiring board is installed in the cavity by screw locking, and a wiring strip is also installed on the position feedback integrated wiring board. Such a structural design allows for fixed installation and convenient wiring.

[0010] It is further defined that the housing is provided with two wire outlets on the outside. Such a structural design can achieve a multi-threading effect.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model does not require extra parts and screws for fastening. The opening cam and the closing cam can be installed on the camshaft through the opening cam elastic ring and the closing cam elastic ring, and the smoothness of the adjustment rotation will not be affected, thus achieving the effect of convenience and cost reduction;

[0013] 2. The connection components of the utility model adopt plug-in connection instead of the old spot welding connection. In a more complicated environment, plug-in connection can be more convenient and will not cause other problems caused by disconnection or temperature difference, thus achieving a more reliable and efficient connection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a schematic diagram of the structure of a pneumatic actuator reply device according to an embodiment of the utility model;

[0016] Figure 2 It is a partial enlarged structural schematic diagram of a pneumatic actuator of an embodiment of the utility model;

[0017] Figure 3 A schematic cross-sectional structure diagram of a pneumatic actuator's reply device according to an embodiment of the utility model;

[0018] The main component symbols are described as follows:

[0019] Shell 1, cavity 2, camshaft 3, open position cam 4, open position micro switch 5, open position contact 6, closed position contact 7, position feedback integrated terminal block 8, open position cam elastic ring 9, closed position cam 10, closed position cam elastic ring 11, retaining ring 12, closed position micro switch 13, terminal strip 14, outlet 15. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment 1, as Figure 1 , Figure 2 and Figure 3 As shown, a reply device of a pneumatic actuator is provided, a cavity 2 is provided in a shell body 1, a camshaft 3 is rotatably connected in the cavity 2, the bottom of the camshaft 3 passes through the shell body 1 and extends to the lower side thereof, an opening cam 4 and a closing cam 10 are installed on the upper side of the camshaft 3, and the camshaft 3 is also provided with a retaining spring ring 12 on the lower side of the closing cam 10, a position feedback integrated wiring board 8 is installed at the bottom of the inner side of the cavity 2, an opening micro switch 5 and a closing micro switch 13 are installed on the position feedback integrated wiring board 8, the opening micro switch 5 is provided with an opening contact 6, the opening contact 6 is in contact with the opening cam 4, and the closing micro switch 13 is provided with a closing contact 7, and the closing contact 7 is in contact with the closing cam 10.

[0022] In this embodiment, by rotating the camshaft 3, the camshaft 3 drives the opening cam 4 and the closing cam 10 to rotate, so that the high points of the opening cam 4 and the closing cam 10 rotate to the opening microswitch 5 and the closing microswitch 13, and are squeezed into contact with the opening contact 6 and the closing contact 7, so that the opening microswitch 5 and the closing microswitch 13 receive signals and control opening and closing through the position feedback integrated terminal block 8.

[0023] Embodiment 2, as Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1, the opening cam 4 and the opening micro switch 5 are arranged on the upper side of the closing cam 10 and the closing micro switch 13, and there is a platform gap between the opening cam 4 and the closing cam 10.

[0024] In this embodiment, the opening cam 4 and the opening micro switch 5 and the closing cam 10 and the closing micro switch 13 are installed by being arranged up and down, which is convenient for coordinated installation and use.

[0025] Embodiment 3, as Figure 3 As shown, this embodiment adds the following structure on the basis of the embodiment 1: an opening cam elastic ring 9 is provided in the opening cam 4, a closing cam elastic ring 11 is provided in the closing cam 10, and both the opening cam elastic ring 9 and the closing cam elastic ring 11 are arranged outside the camshaft 3. Such a structural design can fix the opening cam 4 and the closing cam 10.

[0026] In this embodiment, no extra parts or screws are required, and the opening cam 4 and the closing cam 10 can be installed on the camshaft 3 through the opening cam elastic ring 9 and the closing cam elastic ring 11 without affecting the smoothness of the adjustment rotation.

[0027] Embodiment 4, as Figure 3 As shown, this embodiment adds the following structure on the basis of embodiment 1: the position feedback integrated wiring board 8 is installed in the cavity 2 by screw locking, and a wiring strip 14 is also installed on the position feedback integrated wiring board 8. Such a structural design allows for fixed installation and convenient wiring.

[0028] In this embodiment, the position feedback integrated terminal block 8 is directly placed in the cavity 2 and can be locked and fixed by screws, thereby achieving the purpose of time-saving, efficient and convenient installation. In addition, the position feedback integrated terminal block 8 and the terminal strip 14 are integrated into one piece, which can provide more accurate feedback on the opening and closing strokes, and is convenient for wiring and installation.

[0029] Embodiment 5, as Figure 1 As shown, this embodiment adds the following structure on the basis of the embodiment 1: two wire outlets 15 are provided outside the housing 1. Such a structural design can achieve the effect of multiple threading.

[0030] In this embodiment, the concept of multiple threading in more environments and with more functions is achieved, and an additional processable wire outlet can be provided on the housing 1 to further enhance the threading effect.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A pneumatic actuator reply device, characterized in that: The invention comprises a shell (1), wherein a cavity (2) is provided in the shell (1), a camshaft (3) is rotatably connected in the cavity (2), the bottom of the camshaft (3) passes through the shell (1) and extends to the lower side thereof, an opening cam (4) and a closing cam (10) are mounted on the upper side of the camshaft (3), and a retaining spring ring (12) is further provided on the lower side of the closing cam (10) of the camshaft (3), a position feedback integrated wiring board (8) is mounted on the bottom of the inner side of the cavity (2), an opening micro switch (5) and a closing micro switch (13) are mounted on the position feedback integrated wiring board (8), the opening micro switch (5) is provided with an opening contact (6), the opening contact (6) is in contact with the opening cam (4), and the closing micro switch (13) is provided with a closing contact (7), the closing contact (7) is in contact with the closing cam (10).

2. The pneumatic actuator reply device according to claim 1, characterized in that: The opening cam (4) and the opening micro switch (5) are arranged on the upper side of the closing cam (10) and the closing micro switch (13), and a platform gap exists between the opening cam (4) and the closing cam (10).

3. The pneumatic actuator reply device according to claim 2, characterized in that: An opening cam elastic ring (9) is arranged in the opening cam (4), and a closing cam elastic ring (11) is arranged in the closing cam (10). Both the opening cam elastic ring (9) and the closing cam elastic ring (11) are arranged outside the camshaft (3).

4. The pneumatic actuator reply device according to claim 3, characterized in that: The position feedback integrated wiring board (8) is installed in the cavity (2) by means of screw locking, and a wiring strip (14) is also installed on the position feedback integrated wiring board (8).

5. The pneumatic actuator reply device according to claim 4, characterized in that: Two wire outlets (15) are provided outside the housing (1).

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