Valve rod gear shifting structure for valve element air tightness detection

Abstract

The utility model discloses a valve rod gear shifting structure for valve core air tightness detection, which is arranged on a fixing frame of a valve core air tightness detection device and comprises a plurality of valve rod gear shifting units. The valve rod gear shifting unit comprises a lifting driving cylinder installed on a top plate of the fixing frame, a rotating driving module which can be arranged in the fixing frame in a lifting mode under driving of the lifting driving cylinder, and a gear shifting driving module which can be arranged at the bottom of the rotating driving module in a rotating mode under driving of the rotating driving module. The gear shifting driving module comprises a base connected with the bottom of the rotary driving module, a limiting cylinder installed in the middle of the bottom face of the base and two gear shifting driving cylinders which are arranged side by side with the limiting cylinder and are oppositely installed on the two sides of the bottom face of the base, and a limiting groove with the two sides communicated is concavely formed in the bottom of the limiting cylinder; a telescopic rod of each gear shifting driving cylinder faces the corresponding limiting groove and is provided with an abutting and pushing piece penetrating into the corresponding limiting groove. According to the utility model, the valve rod of the valve core can be automatically shifted.

Description

Technical Field

[0001] The utility model relates to the technical field of valve core air tightness detection devices, in particular to a valve stem shifting structure used for valve core air tightness detection. Background Art

[0002] The valve core is a valve part that realizes the basic functions of direction control, pressure control or flow control of the valve body. Air tightness detection is a must-check item before the valve core leaves the factory. If the air tightness is unqualified, it will affect the working performance at the least and cause safety accidents at the worst. At present, the air tightness detection of the valve core is mainly done manually by pushing the valve stem to shift gears one by one during the air tightness detection, which has low detection efficiency. Utility Model Content

[0003] The utility model aims to provide a valve stem shifting structure for detecting the air tightness of a valve core.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A valve stem shifting structure for valve core air tightness detection is installed on a fixed frame of a valve core air tightness detection device, and includes a plurality of valve stem shifting units; the fixed frame is provided with a plurality of sockets for inserting the valve core to be detected at intervals on its bottom plate, and each valve stem shifting unit corresponds to a socket up and down;

[0006] The valve stem shift unit includes a lifting drive cylinder installed on the top plate of the fixed frame, a rotation drive module that can be lifted and lowered in the fixed frame under the drive of the lifting drive cylinder, and a shift drive module that can be rotatably arranged at the bottom of the rotation drive module under the drive of the rotation drive module; the shift drive module includes a base connected to the bottom of the rotation drive module, a limiting cylinder installed in the middle of the bottom surface of the base, and two shift drive cylinders that are arranged side by side with the limiting cylinder and relatively installed on both sides of the bottom surface of the base, the bottom of the limiting cylinder is concavely provided with limiting grooves that pass through both sides, the telescopic rod of each shift drive cylinder is arranged toward the limiting groove and a push piece that penetrates into the limiting groove is provided on its telescopic rod, so that after the valve core to be detected is inserted into the socket, the lifting drive cylinder drives the rotation drive module to descend, and the valve stem of the valve core penetrates into the limiting groove, and the shift drive module is driven to rotate as the rotation drive module drives the shift drive module and the telescopic rod of the shift drive cylinder is extended and retracted, so as to push the valve stem for shifting.

[0007] As a further technical solution of the utility model: the rotation drive module includes a lifting seat, a rotation drive motor and a coupling assembly; the telescopic rod of the lifting drive cylinder is inserted into the fixed frame, the top of the lifting seat is connected to the telescopic rod of the lifting drive cylinder and the rotation drive motor is arranged therein; the top of the base is connected to the motor shaft of the rotation drive motor by a coupling assembly, and the gear shifting drive module is driven to rotate by the rotation drive motor.

[0008] As a further technical solution of the utility model: the bottom of the lifting upper seat is connected to the lifting lower seat, the gear shifting drive module is arranged in the lifting lower seat, and the lifting lower seat is installed with a positioning piece on its bottom plate which is opposite to the socket up and down and passes through its bottom plate. The positioning piece is concavely provided with a positioning groove on its bottom surface and a through-hole in the center of the positioning groove for the lifting drive cylinder to drive the rotating drive module to descend. After the valve stem of the valve core passes through the through-hole, the positioning groove presses against the valve core.

[0009] As a further technical solution of the utility model: the lifting lower seat is provided with a rotary joint at the top thereof for transmitting the medium to the shift drive cylinder, and the center of the rotary joint is provided with a through opening for the coupling assembly to pass through.

[0010] As a further technical solution of the utility model: the fixed frame is provided with a plurality of lifting guide rails on its back plate corresponding to the spacing between each lifting lower seat, and the lifting lower seat is provided with a plurality of sliders which can slide along the lifting guide rails at its rear end, so that the sliders can be installed on the corresponding lifting guide rails.

[0011] As a further technical solution of the utility model: the fixing frame is provided with a first photoelectric sensor on the back plate thereof corresponding to the valve core installation position of each socket.

[0012] As a further technical solution of the utility model: the lifting upper seat is provided with a partition which separates the upper part and the lower part thereof; the rotary drive motor is arranged on the partition and is located in the upper part of the lifting upper seat; the lifting upper seat is provided with a plurality of second photoelectric sensors in a circular array around the coupling assembly in its lower part, and a trigger sheet which cooperates with the second photoelectric sensor is provided on one end of the coupling assembly which is connected to the motor shaft of the rotary drive motor.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model proposes a valve stem shifting structure for valve core air tightness detection, which automatically shifts the valve stem of the valve core installed on the socket through the valve stem shifting unit, and with the cooperation of the lifting drive cylinder, the rotation drive module and the shifting drive module of the valve stem shifting unit, the air tightness detection efficiency of the valve core is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a valve core air tightness detection device with a valve stem shifting structure.

[0015] Figure 2 This is a first-person view of the valve stem shifting structure.

[0016] Figure 3 This is a second perspective view of the valve stem shifting structure.

[0017] Figure 4 This is a front cross-sectional view of the valve stem shifting structure.

[0018] Figure 5 It is a side sectional view of the valve stem shifting structure. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the protection scope of the present invention.

[0020] See also Figure 1 A valve core air tightness detection device comprises a body 101, a fixing frame 102 and a valve stem shifting structure; the body 101 is provided with the fixing frame 102 at its upper part, and the fixing frame 102 is provided with a plurality of sockets 103 for inserting the valve core to be detected at intervals on its bottom plate; the body 101 is provided with an air tightness detection structure in its lower part, and the air tightness detection structure is connected with the bottom of the socket 103, and after the valve core to be detected is inserted into the socket 103 and started, the air tightness detection structure is used to detect the air tightness of the valve core; the valve stem shifting structure comprises a plurality of valve stem shifting units 10 installed at intervals on the fixing frame 102, each valve stem shifting unit 10 is opposite to a corresponding socket 103 up and down, and after the valve core to be detected is inserted into the socket 103 and started, the valve stem of the valve core is shifted by the valve stem shifting unit 10.

[0021] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 The valve stem shift unit 10 includes a lifting drive cylinder 11 installed on the top plate of a fixed frame 102, a rotation drive module 12 that can be lifted and lowered in the fixed frame 102 under the drive of the lifting drive cylinder 11, and a shift drive module 13 that can be rotatably arranged at the bottom of the rotation drive module 12 under the drive of the rotation drive module 12; the shift drive module 13 includes a base 131 connected to the bottom of the rotation drive module 12, a limiting cylinder 132 installed in the middle of the bottom surface of the base 131 opposite to the socket 103, and a limiting cylinder 132 installed on the base 131 side by side with the limiting cylinder 132. There are two shift drive cylinders 133 on both sides of the bottom surface, and the bottom of the limit tube 132 is recessed with limit grooves 1321 that pass through on both sides. The telescopic rod of each shift drive cylinder 133 is arranged toward the limit groove 1321 and is provided with a push piece 1331 that penetrates into the limit groove 1321. After the valve core to be tested is inserted into the socket 103, the lifting drive cylinder 11 drives the rotation drive module 12 to descend, and the valve stem of the valve core penetrates into the limit groove 1321. As the rotation drive module 12 drives the shift drive module 13 to rotate and the telescopic rod of the shift drive cylinder 133 is extended and retracted, the valve stem is pushed for shifting.

[0022] Furthermore, in the present embodiment, the rotation drive module 12 comprises a lifting upper seat 121, a rotation drive motor 122 and a coupling assembly 123; the telescopic rod of the lifting drive cylinder 11 is inserted into the fixed frame 102, the top of the lifting upper seat 121 is connected to the telescopic rod of the lifting drive cylinder 11 and the rotation drive motor 122 is arranged therein; the top of the base 131 is connected to the motor shaft of the rotation drive motor 122 by a coupling assembly 123, and the gear shifting drive module 13 is driven to rotate by the rotation drive motor 122.

[0023] Furthermore, in the present embodiment, the bottom of the lifting upper seat 121 is connected to the lifting lower seat 124, the gear shifting drive module 13 is arranged in the lifting lower seat 124, and the lifting lower seat 124 is provided with a positioning member 21 on its bottom plate which is opposite to the socket 103 up and down and passes through its bottom plate. The positioning member 21 has a positioning groove 211 recessed on its bottom surface and a through-hole 212 opened in the center of the positioning groove 211, for the lifting drive cylinder 11 to drive the rotating drive module 12 to descend, and after the valve stem of the valve core passes through the through-hole 212, the positioning groove 211 presses against the valve core.

[0024] Furthermore, in this embodiment, the lifting lower seat 124 is provided with a rotary joint 22 at the top thereof for transmitting the medium to the shift drive cylinder 133 , and the center of the rotary joint 22 is provided with a through opening for the coupling assembly 123 to pass through.

[0025] Furthermore, in this embodiment, the fixed frame 102 is provided with a plurality of lifting guide rails 23 on its back plate at intervals corresponding to each lifting lower seat 124, and the lifting lower seat 124 is provided with a plurality of sliders 231 capable of sliding along the lifting guide rails 23 at its rear end, so that the sliders 231 can be installed on the corresponding lifting guide rails 23 to improve the stability of the lifting lower seat 124 during lifting.

[0026] Furthermore, in this embodiment, the fixing frame 102 is provided with a first photoelectric sensor 24 on its back plate at the valve core installation position corresponding to each socket 103, so that after the valve core to be detected is inserted into the socket 103, the first photoelectric sensor 24 can sense the valve core, thereby transmitting a signal to the valve stem shifting structure to enable it to operate.

[0027] Furthermore, in this embodiment, the lifting seat 121 is provided with a partition 25 which separates the upper part and the lower part thereof; the rotary drive motor 122 is arranged on the partition 25 and is located in the upper part of the lifting seat 121; the lifting seat 121 is provided with a plurality of second photoelectric sensors 26 in a circular array around the coupling assembly 123 in its lower part, and a trigger sheet 27 cooperating with the second photoelectric sensor 26 is provided on one end of the coupling assembly 123 connected to the motor shaft of the rotary drive motor 122, and the trigger sheet 27 is triggered by the rotation of the coupling assembly 123 to trigger the second photoelectric sensor 26 at the corresponding position, thereby controlling the rotation amplitude of the gear shift drive module 13.

[0028] It can be understood that the method of using the valve stem shifting structure for valve core air tightness detection of the utility model is as follows: after the valve core to be detected is inserted into the socket 103, the first photoelectric sensor 24 senses the valve core and transmits a signal to the valve stem shifting structure, so that the corresponding valve stem shifting unit 10 operates; the telescopic rod of the lifting drive cylinder 11 extends to drive the rotary drive module 12 to descend, and the valve stem of the valve core passes through the opening 212 of the lifting lower seat 124 and then penetrates into the limiting groove 1321 of the limiting cylinder 132; the rotating drive motor 122 drives the shifting drive module 13 to rotate in the lifting lower seat 124 and the telescopic rod of the shifting drive cylinder 133 is extended and retracted, so that the push member 1331 automatically pushes the valve stem to shift. In this way, the automatic shifting of the valve stem of the valve core in the air tightness detection is realized, and the detection efficiency is effectively improved.

[0029] To sum up, the utility model is a valve stem shifting structure for valve core air tightness detection, which automatically shifts the valve stem of the valve core installed on the socket 103 through the valve stem shifting unit 10. With the cooperation of the lifting drive cylinder 11, the rotation drive module 12 and the shifting drive module 13 of the valve stem shifting unit 10, the air tightness detection efficiency of the valve core is effectively improved.

[0030] As long as it does not violate the creative idea of ​​the utility model, any combination of various different embodiments of the utility model should be regarded as the content disclosed by the utility model; within the technical concept of the utility model, any simple modification of the technical solution and any combination of different embodiments that do not violate the creative idea of ​​the utility model should be within the protection scope of the utility model.

Claims

1. A valve stem shifting structure for valve core air tightness detection, mounted on a fixing frame (102) of a valve core air tightness detection device, characterized in that: It comprises a plurality of valve stem shifting units (10); a fixed frame (102) is provided with a plurality of sockets (103) for inserting valve cores to be tested at intervals on its bottom plate, and each valve stem shifting unit (10) corresponds to a socket (103) in a vertical direction; The valve stem shift unit (10) comprises a lifting drive cylinder (11) mounted on a top plate of a fixed frame (102), a rotation drive module (12) that can be lifted and lowered in the fixed frame (102) under the drive of the lifting drive cylinder (11), and a shift drive module (13) that can be rotatably arranged at the bottom of the rotation drive module (12) under the drive of the rotation drive module (12); the shift drive module (13) comprises a base (131) connected to the bottom of the rotation drive module (12), a limiting cylinder (132) mounted in the middle of the bottom surface of the base (131), and two limiting cylinders (132) that are arranged side by side with the limiting cylinder (132) and are relatively mounted on both sides of the bottom surface of the base (131). The shift drive cylinder (133) is provided with a limit groove (1321) penetrating at both sides at the bottom of the limit cylinder (132). The telescopic rod of each shift drive cylinder (133) is arranged toward the limit groove (1321) and a push member (1331) is provided on the telescopic rod and penetrates into the limit groove (1321). After the valve core to be tested is inserted into the socket (103), the lifting drive cylinder (11) drives the rotation drive module (12) to descend, and the valve stem of the valve core penetrates into the limit groove (1321). As the rotation drive module (12) drives the shift drive module (13) to rotate and the telescopic rod of the shift drive cylinder (133) to extend and retract, the valve stem is pushed to shift gears.

2. The valve stem shifting structure for valve core air tightness detection according to claim 1 is characterized in that: The rotary drive module (12) comprises a lifting upper seat (121), a rotary drive motor (122) and a coupling assembly (123); the telescopic rod of the lifting drive cylinder (11) is inserted into the fixed frame (102), the top of the lifting upper seat (121) is connected to the telescopic rod of the lifting drive cylinder (11) and the rotary drive motor (122) is arranged therein; the top of the base (131) is connected to the motor shaft of the rotary drive motor (122) by the coupling assembly (123), and the gear shift drive module (13) is driven to rotate by the rotary drive motor (122).

3. The valve stem shifting structure for valve core air tightness detection according to claim 2 is characterized in that: The bottom of the lifting upper seat (121) is connected to a lifting lower seat (124), and the gear shifting drive module (13) is arranged in the lifting lower seat (124). The lifting lower seat (124) is provided with a positioning member (21) on its bottom plate, which is opposite to the socket (103) in upper and lower directions and passes through its bottom plate. The positioning member (21) is provided with a positioning groove (211) on its bottom surface and a through hole (212) is opened in the center of the positioning groove (211) for the lifting drive cylinder (11) to drive the rotating drive module (12) to descend. After the valve stem of the valve core passes through the through hole (212), the positioning groove (211) is pressed against the valve core.

4. The valve stem shifting structure for valve core air tightness detection according to claim 3 is characterized in that: The lifting lower seat (124) is provided with a rotary joint (22) at its top for transmitting a medium to the shift drive cylinder (133), and a through hole for the coupling assembly (123) to pass through is provided at the center of the rotary joint (22).

5. The valve stem shifting structure for valve core air tightness detection according to claim 3 is characterized in that: The fixing frame (102) is provided with a plurality of lifting guide rails (23) on its back plate at intervals corresponding to each lifting lower seat (124), and the lifting lower seat (124) is provided with a plurality of sliding blocks (231) capable of sliding along the lifting guide rails (23) at its rear end, so that the sliding blocks (231) can be installed on the corresponding lifting guide rails (23).

6. The valve stem shifting structure for valve core air tightness detection according to claim 1, characterized in that: The fixing frame (102) is provided with a first photoelectric sensor (24) on its back plate corresponding to the valve core installation position of each socket (103).

7. The valve stem shifting structure for valve core air tightness detection according to claim 3 is characterized in that: The lifting upper seat (121) is provided with a partition (25) for separating the upper part and the lower part thereof; the rotary drive motor (122) is arranged on the partition (25) and is located in the upper part of the lifting upper seat (121); the lifting upper seat (121) is provided with a plurality of second photoelectric sensors (26) in a circular array around a coupling assembly (123) in the lower part thereof; and a trigger sheet (27) cooperating with the second photoelectric sensor (26) is provided on one end of the coupling assembly (123) connected to the motor shaft of the rotary drive motor (122).

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