Air tightness testing machine for water mixing valve element

Abstract

The utility model relates to an air tightness testing machine for a water mixing valve core, which comprises an air tightness testing device and a valve core translation mechanism arranged on one side of the air tightness testing device. The air tightness testing device comprises a valve opening water outlet testing device, a valve opening cold water port testing device and a valve opening hot water port testing device which are arranged in sequence, and the valve element translation mechanism is used for moving the water mixing valve element. According to the utility model, multi-channel air tightness detection can be carried out on the water outlet, the cold water port and the hot water port of the water mixing valve core, a plurality of water mixing valve cores can be detected at the same time, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing valve core production equipment, in particular to an air tightness testing machine for mixing valve cores. Background Art

[0002] The mixing valve core is the core component of a mixing valve, located inside the main body of the mixing valve. Its main function is to adjust the mixing ratio of two water flows by rotation to achieve the adjustment of the outlet water temperature, thereby ensuring the stability of the water temperature in use scenarios such as showering and washing the face. The air tightness detection of the mixing valve core is an important link to ensure its performance and quality. The main purpose is to verify whether the valve core can effectively prevent water leakage in different states.

[0003] Currently, common mixing valve cores on the market usually require multiple air tightness detection processes, such as detecting the air tightness of the outlet, hot water port, and cold water port. These tests are usually carried out manually, resulting in low detection efficiency and unable to meet the needs of mass production. Summary of the Invention

[0004] The purpose of the utility model is to provide an air tightness testing machine for mixing valve cores to solve the problem of low air tightness detection efficiency of mixing valve cores.

[0005] To achieve the above purpose, the utility model discloses an air tightness testing machine for mixing valve cores, including: an air tightness testing device and a valve core translation mechanism. The valve core translation mechanism is arranged on one side of the air tightness testing device. The air tightness testing device includes a valve open outlet testing device, a valve open cold water port testing device, and a valve open hot water port testing device arranged in sequence. The valve core translation mechanism is used to move the mixing valve core.

[0006] Preferably, the air tightness testing device further includes a valve closed cold water port testing device and a valve closed hot water port testing device. The valve closed cold water port testing device is arranged on one side of the valve open hot water port testing device.

[0007] Preferably, the valve open outlet testing device includes a first valve core positioning device, a first lifting device, and a first pressing head. The first pressing head is installed at the bottom of the first lifting device. The first lifting device is arranged directly above the first valve core positioning device. The first valve core positioning device is used to place the valve core. The first lifting device drives the first pressing head to press the valve core tightly in the first valve core positioning device. The first valve core positioning device is connected to an air source and a pressure sensor.

[0008] Preferably, the valve opening cold water outlet test device includes a second valve core positioning device, a second lifting device, a second rotating device, a second rotating head and a second pressure head. The second rotating device is installed at the bottom of the second lifting device, the second rotating head is installed on the rotating axis of the second rotating device, the second pressure head is installed at the bottom of the second rotating device, the second lifting device is arranged directly above the second valve core positioning device, the second valve core positioning device is used to place the valve core, the second lifting device drives the second rotating device to move in a vertical direction, the second pressure head is used to press the valve core into the second valve core positioning device, the second rotating device drives the second rotating head to rotate, the second rotating head is used to clamp with the handle of the valve core, and the second valve core positioning device is connected to the air source and the pressure sensor.

[0009] Preferably, the valve opening hot water outlet test device includes a third valve core positioning device, a third lifting device, a third rotating device, a third rotating head and a third pressure head. The third rotating device is installed at the bottom of the third lifting device, and the third rotating head is installed on the rotating axis of the third rotating device. The third pressure head is installed at the bottom of the third rotating device. The third lifting device is arranged directly above the third valve core positioning device. The third valve core positioning device is used to place the valve core. The third lifting device drives the third rotating device to move in a vertical direction. The third pressure head is used to press the valve core into the third valve core positioning device. The third rotating device drives the third rotating head to rotate. The third rotating head is used to clamp the valve core with the handle. The third valve core positioning device is connected to the air source and the pressure sensor.

[0010] Preferably, the valve closing cold water outlet test device includes a fourth valve core positioning device, a fourth lifting device, a fourth driving device, a fourth toggle handle and a fourth pressure head. The fourth driving device is installed at the bottom of the fourth lifting device, the fourth toggle handle is installed on the fourth driving device, the fourth pressure head is installed at the bottom of the fourth driving device, the fourth lifting device is arranged directly above the fourth valve core positioning device, the fourth valve core positioning device is used to place the valve core, the fourth lifting device drives the fourth driving device to move in a vertical direction, the fourth pressure head is used to press the valve core into the fourth valve core positioning device, the fourth driving device drives the fourth toggle handle to move in a horizontal direction, the fourth toggle handle is used to close the valve of the mixing water valve core, and the fourth valve core positioning device is connected to the air source and the pressure sensor.

[0011] Preferably, the valve closing hot water port testing device includes a fifth valve core positioning device, a fifth lifting device, and a fifth pressing head. The fifth pressing head is installed at the bottom of the fifth lifting device, and the fifth lifting device is arranged directly above the fifth valve core positioning device. The fifth valve core positioning device is used to place the valve core, and the fifth lifting device drives the fifth pressing head to press the valve core tightly within the fifth valve core positioning device. The fifth valve core positioning device is connected to a gas source and a pressure sensor.

[0012] Preferably, the valve core translation mechanism includes a sixth lifting device, a support plate, a longitudinal moving platform, a horizontal moving platform, and clamping jaws. The support plate is installed on the sixth lifting device, and the sixth lifting device drives the support plate to move in the vertical direction. The longitudinal moving platform is installed on the support plate, the horizontal moving platform is installed on the longitudinal moving platform, and multiple clamping jaws are installed on the horizontal moving platform at intervals along the movement direction of the horizontal moving platform; the longitudinal moving platform moves in a direction closer to or farther away from the airtightness testing device.

[0013] Preferably, it further includes a valve core feeding module and a discharging device. The valve core feeding module is arranged on one side of the valve opening water outlet testing device away from the valve opening cold water port testing device. The valve core feeding module includes a sixth valve core positioning device and a sixth loading manipulator, and the sixth loading manipulator is arranged above the sixth valve core positioning device;

[0014] The discharging device is arranged on one side of the fifth valve core positioning device away from the fourth valve core positioning device. The discharging device includes a first discharging hopper and a second discharging hopper, and the first discharging hopper and the second discharging hopper are arranged longitudinally.

[0015] Preferably, multiple first valve core positioning devices, first lifting devices, and first pressing heads are provided; multiple second valve core positioning devices, second lifting devices, second rotating devices, second rotating heads, and second pressing heads are provided; multiple third valve core positioning devices, third lifting devices, third rotating devices, third rotating heads, and third pressing heads are provided; multiple fourth valve core positioning devices, fourth lifting devices, fourth driving devices, fourth toggling handles, and fourth pressing heads are provided; multiple fifth valve core positioning devices, fifth lifting devices, and fifth pressing heads are provided.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model can perform multiple airtightness detections on the water outlet, cold water port, and hot water port of the mixing valve core, and can detect multiple mixing valve cores simultaneously, effectively improving the detection efficiency. Description of the Drawings

[0018] Figure 1Schematic diagram of the overall structure provided in a specific embodiment of the present utility model;

[0019] Figure 2 Partial enlarged schematic diagram of part A provided in a specific embodiment of the present utility model;

[0020] Figure 3 Partial enlarged schematic diagram of part B provided in a specific embodiment of the present utility model;

[0021] Figure 4 Partial structural schematic diagram of the valve opening water outlet test device provided in a specific embodiment of the present utility model;

[0022] Figure 5 Partial structural schematic diagram of the valve opening cold water port test device provided in a specific embodiment of the present utility model;

[0023] Figure 6 Partial sectional view schematic diagram of the valve opening cold water port test device provided in a specific embodiment of the present utility model;

[0024] Figure 7 Partial structural schematic diagram of the valve opening hot water port test device provided in a specific embodiment of the present utility model;

[0025] Figure 8 Partial sectional view schematic diagram of the valve opening hot water port test device provided in a specific embodiment of the present utility model;

[0026] Figure 9 Partial structural schematic diagram of the valve closing cold water port test device provided in a specific embodiment of the present utility model;

[0027] Figure 10 Partial sectional view schematic diagram of the valve closing cold water port test device provided in a specific embodiment of the present utility model;

[0028] Figure 11 Partial structural schematic diagram of the valve closing hot water port test device provided in a specific embodiment of the present utility model;

[0029] Figure 12 Schematic diagram of the structure of the valve core translation mechanism provided in a specific embodiment of the present utility model;

[0030] Figure 13 Schematic diagram of the structure of the mixing valve core provided in a specific embodiment of the present utility model.

[0031] Explanation of the symbols of the main components:

[0032] 100. Valve Open Outlet Test Device; 110. First Lifting Device; 120. First Lower Pressing Head; 130. First Spool Positioning Device; 200. Valve Open Cold Water Inlet Test Device; 210. Second Lifting Device; 220. Second Rotating Device; 230. Second Lower Pressing Head; 240. Second Rotating Head; 300. Valve Open Hot Water Inlet Test Device; 310. Third Lifting Device; 320. Third Rotating Device; 330. Third Lower Pressing Head; 340. Third Rotating Head; 400. Valve Closed Cold Water Inlet Test Device; 410. Fourth Lifting Device; 420. Fourth Driving Device; 421. Fourth Pushing Handle; 430. Fourth Lower Pressing Head; 500. Valve Closed Hot Water Inlet Test Device; 510. Fifth Lifting Device; 520. Fifth Lower Pressing Head; 600. Discharging Device; 700. Spool Feeding Module; 710. Sixth Loading Manipulator; 720. Sixth Spool Positioning Device; 800. Spool Translation Mechanism; 810. Sixth Lifting Device; 820. Pallet; 830. Longitudinal Moving Platform; 840. Horizontal Moving Platform; 850. Claw. Detailed Implementation Manner

[0033] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] As Figures 1 to 13 shown, the present utility model provides a mixing spool airtightness tester, including: an airtightness test device and a spool translation mechanism 800. The spool translation mechanism 800 is arranged on one side of the airtightness test device. The airtightness test device includes a valve open outlet test device 100, a valve open cold water inlet test device 200, and a valve open hot water inlet test device 300 arranged in sequence. The spool translation mechanism 800 is used to move the mixing spool.

[0035] The airtightness test device further includes a valve closed cold water inlet test device 400 and a valve closed hot water inlet test device 500. The valve closed cold water inlet test device 400 is arranged on one side of the valve open hot water inlet test device 300.

[0036] In this embodiment, the airtightness test device sequentially includes a valve open outlet test device 100, a valve open cold water inlet test device 200, a valve open hot water inlet test device 300, a valve closed cold water inlet test device 400, and a valve closed hot water inlet test device 500 from left to right. A spool feeding module 700 is arranged on the left side of the airtightness test device, a discharging device 600 is arranged on the right side of the airtightness test device, and a spool translation mechanism 800 is arranged in front of the airtightness test device.

[0037] The spool translation mechanism 800 is used to move the mixing water spool from the spool feeding module 700 to the valve open water outlet testing device 100, then from the valve open water outlet testing device 100 to the valve open cold water outlet testing device 200, then from the valve open cold water outlet testing device 200 to the valve open hot water outlet testing device 300, then from the valve open hot water outlet testing device 300 to the valve closed cold water outlet testing device 400, then from the valve closed cold water outlet testing device 400 to the valve closed hot water outlet testing device 500, and then from the valve closed hot water outlet testing device 500 to the discharging device 600 for discharging.

[0038] The valve open water outlet testing device 100 is a device for detecting the airtightness of the water outlet in the valve open state. The valve open cold water outlet testing device 200 is a device for detecting the airtightness of the cold water outlet in the valve open state. The valve open hot water outlet testing device 300 is a device for detecting the airtightness of the hot water outlet in the valve open state. The valve closed cold water outlet testing device 400 is a device for detecting the airtightness of the cold water outlet in the valve closed state. The valve closed hot water outlet testing device 500 is a device for detecting the airtightness of the hot water outlet in the valve closed state.

[0039] As Figure 4 shown, the valve open water outlet testing device 100 includes a first spool positioning device 130, a first lifting device 110 and a first pressing head 120. The first pressing head 120 is installed at the bottom of the first lifting device 110. The first lifting device 110 is arranged directly above the first spool positioning device 130. The first spool positioning device 130 is used to place the spool. The first lifting device 110 drives the first pressing head 120 to press the spool tightly in the first spool positioning device. The first spool positioning device 130 is connected to the air source and the pressure sensor.

[0040] In this embodiment, the first spool positioning device 130 is provided with five, and the first lifting device 110 and the first pressing head 120 installed at the bottom of the first lifting device 110 are both correspondingly provided with five. The airtightness of five mixing water spools can be tested simultaneously. The first spool positioning device 130 is a spool positioning tooling with a groove. When in use, the spool is placed in the groove. The groove is provided with air holes at the position corresponding to the water outlet. The air holes are connected to the external air source and the pressure sensor. High-pressure gas is introduced into the air holes and kept under pressure. According to the reading of the pressure sensor, the airtightness of the water outlet is detected.

[0041] As Figures 5 to 6As shown in the figure, the cold water port testing device 200 for the opened valve includes a second valve core positioning device, a second lifting device 210, a second rotating device 220, a second rotating head 240, and a second pressing head 230. The second rotating device 220 is installed at the bottom of the second lifting device 210. The second rotating head 240 is installed on the rotating shaft of the second rotating device 220. The second pressing head 230 is installed at the bottom of the second rotating device 220. The second lifting device 210 is arranged directly above the second valve core positioning device. The second valve core positioning device is used to place the valve core. The second lifting device 210 drives the second rotating device 220 to move in the vertical direction. The second pressing head 230 is used to press the valve core tightly within the second valve core positioning device. The second rotating device 220 drives the second rotating head 240 to rotate. The second rotating head 240 is used to engage with the handle of the valve core. The second valve core positioning device is connected to the air source and the pressure sensor.

[0042] In this embodiment, there are five second valve core positioning devices. The second lifting device 210, the second rotating device 220 installed at the bottom of the second lifting device 210, and the second pressing head 230 arranged at the bottom of the second rotating device 220 are all correspondingly provided with five, so that the sealing performance of five mixing valve cores can be tested simultaneously. The second valve core positioning device is a valve core positioning tooling with a groove. When in use, the valve core is placed in the groove. An air hole is opened at the position of the groove corresponding to the cold water port. The air hole is connected to the external air source and the pressure sensor. High-pressure gas is introduced into the air hole and pressure is maintained. According to the reading of the pressure sensor, the airtightness of the cold water port is detected. In the above embodiment, the second lifting device 210 is a cylinder, and the second rotating device 220 is a rotating cylinder.

[0043] As Figures 7 to 8 As shown in the figure, the hot water port testing device 300 for the opened valve includes a third valve core positioning device, a third lifting device 310, a third rotating device 320, a third rotating head 340, and a third pressing head 330. The third rotating device 320 is installed at the bottom of the third lifting device 310. The third rotating head 340 is installed on the rotating shaft of the third rotating device 320. The third pressing head 330 is installed at the bottom of the third rotating device 320. The third lifting device 310 is arranged directly above the third valve core positioning device. The third valve core positioning device is used to place the valve core. The third lifting device 310 drives the third rotating device 320 to move in the vertical direction. The third pressing head 330 is used to press the valve core tightly within the third valve core positioning device. The third rotating device 320 drives the third rotating head 340 to rotate. The third rotating head 340 is used to engage with the handle of the valve core. The third valve core positioning device is connected to the air source and the pressure sensor.

[0044] In this embodiment, five third valve core positioning devices are provided, and five third lifting devices 310, third rotating devices 320 installed at the bottom of the third lifting device 310, and third pressure heads 330 provided at the bottom of the third rotating device 320 are provided accordingly. The sealing properties of five water mixing valve cores can be tested simultaneously. The third valve core positioning device is a valve core positioning tool with a groove. When in use, the valve core is placed in the groove. The groove corresponds to the position of the hot water outlet and has an air hole. The air hole is connected to the external air source and the pressure sensor. High-pressure gas is introduced into the air hole and the pressure is maintained. According to the reading of the pressure sensor, the air tightness of the hot water outlet is tested. In the above embodiment, the third lifting device 310 is a cylinder, and the third rotating device 320 is a rotating cylinder.

[0045] like Figures 9 to 10 As shown, the valve closing cold water inlet test device 400 includes a fourth valve core positioning device, a fourth lifting device 410, a fourth driving device 420, a fourth toggle handle 421 and a fourth pressure head 430. The fourth driving device 420 is installed at the bottom of the fourth lifting device 410, the fourth toggle handle 421 is installed on the fourth driving device 420, and the fourth pressure head 430 is installed at the bottom of the fourth driving device 420. The fourth lifting device 410 is arranged directly above the fourth valve core positioning device. The fourth valve core positioning device is used to place the valve core. The fourth lifting device 410 drives the fourth driving device 420 to move in the vertical direction. The fourth pressure head 430 is used to press the valve core into the fourth valve core positioning device. The fourth driving device 420 drives the fourth toggle handle 421 to move in the horizontal direction. The fourth toggle handle 421 is used to close the valve of the mixing valve core. The fourth valve core positioning device is connected to the air source and the pressure sensor.

[0046] In this embodiment, five fourth valve core positioning devices are provided, and five fourth lifting devices 410, fourth driving devices 420, fourth toggle handles 421 and fourth pressure heads 430 are correspondingly provided. The sealing properties of five mixing water valve cores can be tested simultaneously. The fourth valve core positioning device is a valve core positioning tool with a groove. When in use, the valve core is placed in the groove. An air hole is provided in the groove corresponding to the position of the cold water outlet. The air hole is connected to an external air source and a pressure sensor. High-pressure gas is introduced into the air hole and the pressure is maintained. The air tightness of the cold water outlet is tested according to the reading of the pressure sensor.

[0047] The fourth lifting device 410 and the fourth driving device 420 are both cylinders. The fourth toggle handle 421 is L-shaped as a whole. The fourth toggle handle 421 is fixedly installed on the piston rod of the cylinder. When the piston rod of the fourth driving device 420 retracts, the fourth toggle handle 421 pushes the handle on the mixing valve core to change the valve of the mixing valve core from an open state to a closed state.

[0048] like Figure 11As shown, the valve closing hot water port testing device 500 includes a fifth valve core positioning device, a fifth lifting device 510, and a fifth pressing head 520. The fifth pressing head 520 is installed at the bottom of the fifth lifting device 510. The fifth lifting device 510 is arranged directly above the fifth valve core positioning device. The fifth valve core positioning device is used to place the valve core. The fifth lifting device 510 drives the fifth pressing head 520 to press the valve core tightly within the fifth valve core positioning device. The fifth valve core positioning device is connected to the air source and the pressure sensor.

[0049] In this embodiment, there are five fifth valve core positioning devices, and both the fifth lifting device 510 and the fifth pressing head 520 installed at the bottom of the fifth lifting device 510 are correspondingly provided with five. The airtightness of five mixing valve cores can be tested simultaneously. The fifth valve core positioning device is a valve core positioning tooling with a groove. When in use, the valve core is placed in the groove. The groove is provided with air holes at the positions corresponding to the hot water ports. The air holes are connected to the external air source and the pressure sensor. High-pressure gas is introduced into the air holes and pressure is maintained. According to the reading of the pressure sensor, the airtightness of the hot water port is detected.

[0050] As Figure 2 shown, the valve core feeding module 700 is arranged on one side of the valve opening outlet testing device 100 away from the valve opening cold water port testing device 200. The valve core feeding module 700 includes a sixth valve core positioning device 720 and a sixth loading manipulator 710. The sixth loading manipulator 710 is arranged above the sixth valve core positioning device 720;

[0051] In this embodiment, the sixth loading manipulator 710 can move in the horizontal and vertical directions. There are five sixth valve core positioning devices 720. The sixth loading manipulator 710 places the mixing valve cores one by one onto the sixth valve core positioning devices 720. The five jaws 850 on the valve core translation mechanism 800 simultaneously clamp the mixing valve cores and translate them into the first valve core positioning device 130. In the above embodiment, the sixth valve core positioning device 720 is a valve core positioning tooling with a groove. When in use, the valve core can be positioned by placing it in the groove.

[0052] The discharging device 600 is arranged on one side of the fifth valve core positioning device away from the fourth valve core positioning device. The discharging device 600 includes a first discharging hopper and a second discharging hopper. The first discharging hopper and the second discharging hopper are arranged longitudinally.

[0053] In this embodiment, the first discharging hopper is closer to the airtightness testing device. The valve cores with qualified airtightness are discharged from the second discharging hopper, and the unqualified valve cores are discharged from the first discharging hopper. When discharging, the valve core translation mechanism 800 moves the tested valve cores above the discharging device 600 to classify and discharge the qualified and unqualified valve cores.

[0054] AsFigure 12 As shown, the valve core translation mechanism 800 includes a sixth lifting device 810, a support plate 820, a longitudinal moving platform 830, a horizontal moving platform 840, and clamping jaws 850. The support plate 820 is installed on the sixth lifting device 810, and the sixth lifting device 810 drives the support plate 820 to move in the vertical direction. The longitudinal moving platform 830 is installed on the support plate 820, the horizontal moving platform 840 is installed on the longitudinal moving platform 830, and multiple clamping jaws 850 are installed on the horizontal moving platform 840 at intervals along the moving direction of the horizontal moving platform 840. The longitudinal moving platform 830 moves in a direction closer to or farther from the airtightness testing device.

[0055] In this embodiment, the sixth lifting device 810 is composed of two cylinders. Both the horizontal moving platform 840 and the longitudinal moving platform 830 are driven by cylinders, and the clamping jaws 850 are pneumatic clamping jaws 850. There are 20 clamping jaws 850 arranged along the horizontal moving platform 840. Each time the mixing valve core needs to be translated, 20 valve cores can be moved simultaneously. In the above embodiment, 15 valve cores can be detected simultaneously each time, greatly improving the detection efficiency.

[0056] As mentioned above, it is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. Mixing water valve core airtightness testing machine, characterized in that, Comprising: An airtightness test device and a valve core translation mechanism (800), the valve core translation mechanism (800) is arranged on one side of the airtightness test device, the airtightness test device includes a valve opening water outlet test device (100), a valve opening cold water port test device (200) and a valve opening hot water port test device (300) arranged in sequence, and the valve core translation mechanism (800) is used to move the mixing valve core.

2. The water mixing valve core airtightness testing machine according to claim 1, wherein: The airtightness test device further includes a valve closing cold water port test device (400) and a valve closing hot water port test device (500), and the valve closing cold water port test device (400) is arranged on one side of the valve opening hot water port test device (300).

3. The mixing water valve core airtightness testing machine according to claim 2, characterized in that: The valve opening water outlet test device (100) includes a first valve core positioning device (130), a first lifting device (110) and a first pressing head (120), the first pressing head (120) is installed at the bottom of the first lifting device (110), the first lifting device (110) is arranged directly above the first valve core positioning device (130), the first valve core positioning device (130) is used to place the valve core, the first lifting device (110) drives the first pressing head (120) to press the valve core in the first valve core positioning device, and the first valve core positioning device (130) is connected to the air source and the pressure sensor.

4. The mixing water valve core airtightness testing machine according to claim 3, wherein: The valve opening cold water port test device (200) includes a second valve core positioning device, a second lifting device (210), a second rotating device (220), a second rotating head (240) and a second pressing head (230), the second rotating device (220) is installed at the bottom of the second lifting device (210), the second rotating head (240) is installed on the rotating shaft of the second rotating device (220), the second pressing head (230) is installed at the bottom of the second rotating device (220), the second lifting device (210) is arranged directly above the second valve core positioning device, the second valve core positioning device is used to place the valve core, the second lifting device (210) drives the second rotating device (220) to move in the vertical direction, the second pressing head (230) is used to press the valve core in the second valve core positioning device, the second rotating device (220) drives the second rotating head (240) to rotate, the second rotating head (240) is used to be clamped with the handle of the valve core, and the second valve core positioning device is connected to the air source and the pressure sensor.

5. The water mixing valve core airtightness testing machine according to claim 4, characterized in that: The valve opening hot water port testing device (300) includes a third valve core positioning device, a third lifting device (310), a third rotating device (320), a third rotating head (340), and a third pressing head (330). The third rotating device (320) is installed at the bottom of the third lifting device (310). The third rotating head (340) is installed on the rotating shaft of the third rotating device (320). The third pressing head (330) is installed at the bottom of the third rotating device (320). The third lifting device (310) is arranged directly above the third valve core positioning device. The third valve core positioning device is used to place the valve core. The third lifting device (310) drives the third rotating device (320) to move in the vertical direction. The third pressing head (330) is used to press the valve core tightly within the third valve core positioning device. The third rotating device (320) drives the third rotating head (340) to rotate. The third rotating head (340) is used to engage with the handle of the valve core. The third valve core positioning device is connected to the air source and the pressure sensor.

6. The mixing water valve core airtightness testing machine according to claim 5, characterized in that: The valve closing cold water port testing device (400) includes a fourth valve core positioning device, a fourth lifting device (410), a fourth driving device (420), a fourth toggling handle (421), and a fourth pressing head (430). The fourth driving device (420) is installed at the bottom of the fourth lifting device (410). The fourth toggling handle (421) is installed on the fourth driving device (420). The fourth pressing head (430) is installed at the bottom of the fourth driving device (420). The fourth lifting device (410) is arranged directly above the fourth valve core positioning device. The fourth valve core positioning device is used to place the valve core. The fourth lifting device (410) drives the fourth driving device (420) to move in the vertical direction. The fourth pressing head (430) is used to press the valve core tightly within the fourth valve core positioning device. The fourth driving device (420) drives the fourth toggling handle (421) to move in the horizontal direction. The fourth toggling handle (421) is used to close the valve of the mixing valve core. The fourth valve core positioning device is connected to the air source and the pressure sensor.

7. The water mixing valve core airtightness testing machine according to claim 6, wherein: The valve closing hot water port testing device (500) includes a fifth valve core positioning device, a fifth lifting device (510), and a fifth pressing head (520). The fifth pressing head (520) is installed at the bottom of the fifth lifting device (510). The fifth lifting device (510) is arranged directly above the fifth valve core positioning device. The fifth valve core positioning device is used to place the valve core. The fifth lifting device (510) drives the fifth pressing head (520) to press the valve core tightly within the fifth valve core positioning device. The fifth valve core positioning device is connected to the air source and the pressure sensor.

8. The mixing water valve core airtightness testing machine according to claim 7, characterized in that: The spool translation mechanism (800) includes a sixth lifting device (810), a pallet (820), a longitudinal moving platform (830), a horizontal moving platform (840), and clamping jaws (850). The pallet (820) is installed on the sixth lifting device (810), and the sixth lifting device (810) drives the pallet (820) to move in the vertical direction. The longitudinal moving platform (830) is installed on the pallet (820), the horizontal moving platform (840) is installed on the longitudinal moving platform (830), and a plurality of the clamping jaws (850) are installed on the horizontal moving platform (840) at intervals along the movement direction of the horizontal moving platform (840); the longitudinal moving platform (830) moves in a direction closer to or farther from the airtightness testing device.

9. The water mixing valve core airtightness testing machine according to claim 8, wherein: It further includes a spool feeding module (700) and a discharging device (600). The spool feeding module (700) is arranged on one side of the valve opening water outlet testing device (100) away from the valve opening cold water outlet testing device (200). The spool feeding module (700) includes a sixth spool positioning device (720) and a sixth loading manipulator (710), and the sixth loading manipulator (710) is arranged above the sixth spool positioning device (720); The discharging device (600) is arranged on one side of the fifth spool positioning device away from the fourth spool positioning device. The discharging device (600) includes a first discharging hopper and a second discharging hopper, and the first discharging hopper and the second discharging hopper are arranged longitudinally.

10. The mixing water valve core airtightness testing machine according to claim 9, characterized in that: A plurality of the first spool positioning devices (130), first lifting devices (110), and first pressing heads (120) are provided; a plurality of the second spool positioning devices, second lifting devices (210), second rotating devices (220), second rotating heads (240), and second pressing heads (230) are provided; a plurality of the third spool positioning devices, third lifting devices (310), third rotating devices (320), third rotating heads (340), and third pressing heads (330) are provided; a plurality of the fourth spool positioning devices, fourth lifting devices (410), fourth driving devices (420), fourth toggling handles (421), and fourth pressing heads (430) are provided; a plurality of the fifth spool positioning devices, fifth lifting devices (510), and fifth pressing heads (520) are provided.

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