Automatic replacement device for liquid flow test tool

Abstract

The invention discloses an automatic replacement device for a liquid flow test tool. The automatic replacement device comprises a rotary switching unit, a horizontal connection unit and an operation table, a switching tool is loaded on a tool wheel disc in the rotary switching unit, and tool selection is achieved through an ejection air cylinder and a clamping air cylinder. A clamping air cylinder is arranged on a tool moving plate in the horizontal connection unit and used for clamping the tools selected in the rotary switching unit, and transfer of the tools and the experiment testing unit is achieved through a linear moving module. The operation table top is used for installing the rotary switching unit, the horizontal connection unit, the test unit and the gas distribution block, the selection, transfer and test functions of test tools are integrated, and the control system is used for achieving automatic switching of the test tools.

Description

Technical Field

[0001] The invention relates to an automatic replacement device for a liquid flow test tool, belonging to the technical field of liquid rocket engines. Background Art

[0002] Liquid rocket engine components are characterized by a large number of types and large quantities, and there is an increasing demand for the same type of test pieces to share a test system. Among them, the test fixtures for test pieces such as orifice plates and nozzles have basically the same external dimensions, but slightly different internal structures. When replacing different types of test pieces, the corresponding test fixtures need to be replaced simultaneously, resulting in reduced test efficiency. Therefore, a device that can quickly and automatically switch test fixtures is needed to meet the needs of automatic testing and improve test efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to expand the test capability of a component automation test system and to improve the efficiency of tooling switching.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] An automatic replacement device for fluid flow test tooling includes: a rotary switching unit, a horizontal docking unit and an operating table. The tooling wheel in the rotary switching unit is loaded with switching tooling, and the selection of the tooling is achieved through the ejection cylinder and the clamping cylinder. The tooling moving plate in the horizontal docking unit is provided with a clamping cylinder, which clamps the tooling selected in the rotary switching unit, and realizes the transfer of the tooling and the test unit through the linear moving module. The operating table is used to install the rotary switching unit, the horizontal docking unit, the test unit and the gas distribution assembly, which integrates the selection, transportation and testing functions of the test tooling, and uses the control system to realize the automatic switching of the test tooling.

[0006] More specific:

[0007] A liquid flow test tooling automatic replacement device comprises: a rotation switching unit, a horizontal connection unit, and an operating table.

[0008] The rotary switching unit includes: a driving motor, a fixed shaft, a connecting plate, a tooling wheel, a cylinder fixing plate, a first proximity sensor, a second proximity sensor, a horizontal moving cylinder, a clamping cylinder fixing plate, a shading lever, a first clamping cylinder, a third proximity sensor, a fourth proximity sensor, a first ejection cylinder, a first ejection block, a second ejection cylinder, a second ejection block, and a wheel waterproof cover.

[0009] The driving motor in the rotary switching unit is fixed to the operating table. The driving motor turntable is bolted to the tooling wheel through the connecting plate. There are 6 tooling placement holes on the tooling wheel to realize the rotation and movement of the tooling in the tooling wheel. The lower end of the fixed shaft passes through the rotating hole of the driving motor and is fixed to the operating table, and the upper end is bolted to the cylinder fixing plate; the rear end of the cylinder fixing plate is connected to the second proximity sensor, the side end is connected to the first proximity sensor, and the upper end is bolted to the horizontal moving cylinder; the horizontal moving cylinder piston push rod is bolted to the clamping cylinder fixing plate; the side end of the clamping cylinder fixing plate is installed with a shading lever, and the upper end is bolted to the clamping cylinder, and the upper end of the clamping cylinder is bolted to the third proximity sensor; the clamping and horizontal transfer of the tooling in the rotary switching unit is realized. The wheel waterproof cover is used for overall waterproofing. The fourth proximity sensor is installed on the tooling wheel to detect the tooling status.

[0010] The operating table also includes a table sink and a gas distribution block. The table sink is fixed to the lower end of the operating table, and is connected with a first ejection cylinder and a second ejection cylinder by bolts to realize the vertical transfer of the tooling from the tooling wheel to the clamping cylinder; the end of the piston ejector rod of the first ejection cylinder is connected with a first ejection block, and the end of the piston ejector rod of the second ejection cylinder is connected with a second ejection block to realize the vertical transfer of the tooling from the clamping cylinder to the horizontal docking unit.

[0011] The horizontal docking unit includes: a fifth proximity sensor, a sixth proximity sensor, a mobile connecting plate, a tooling mobile plate, a first docking station, a second docking station, a second clamping cylinder, a third clamping cylinder, a second clamping cylinder mounting plate, a third clamping cylinder mounting plate, a cylinder waterproof cover, and a linear moving module;

[0012] The linear moving module in the horizontal docking unit is fixed to the table top of the operating table. The linear moving module is connected to the tooling moving plate by bolts on the movable connecting plate to realize the horizontal transportation of the tooling moving plate. The front end of the tooling moving plate is provided with a first docking station and a second docking station. The fifth proximity sensor is installed on the side of the first docking station, and the sixth proximity sensor is installed on the side of the second docking station to realize the loading and detection of the tooling in the horizontal docking unit. One end of the tooling moving plate is connected to the second clamping cylinder through the second clamping cylinder mounting plate, and the other end is connected to the third clamping cylinder through the third clamping cylinder mounting plate to realize the clamping and fixing of the tooling in the horizontal docking unit. The upper ends of the second clamping cylinder mounting plate and the third clamping cylinder mounting plate are connected to the cylinder waterproof cover by bolts.

[0013] The second clamping cylinder and the third clamping cylinder in the horizontal docking unit can adjust their positions through the linear moving module, so that the clamping center of the second clamping cylinder or the third clamping cylinder can coincide with the center of the second ejection block, thus realizing the mutual transfer of the tooling from the horizontal docking unit to the rotary switching unit. The first clamping cylinder of the rotary switching unit can adjust its position through the horizontal moving cylinder, so that the clamping center of the first clamping cylinder can coincide with the center of the first ejection block, thus realizing the vertical transfer of the tooling in the rotary switching unit.

[0014] A gas distribution block is installed on the side of the operating table, and the horizontal moving cylinder, the first clamping cylinder, the second clamping cylinder, the third clamping cylinder, the first ejecting cylinder, and the second ejecting cylinder control gas connection ports are connected through high-pressure hoses to realize the reciprocating motion control of the cylinder piston.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The tool switching device of the present invention integrates the tool switching unit, the horizontal docking unit, and the test unit into a system in an orderly manner, realizing the automatic selection and transfer of tooling to the test unit workstation, replacing the traditional manual tool switching to reduce labor costs and improve test efficiency.

[0017] (2) The tool switching device of the present invention can realize the automatic switching and testing of six types of tooling during the test process through program setting, shortening the continuous test process cycle and improving the adaptability of the test unit product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of the tooling switching device of the present invention.

[0019] Figure 2 It is a three-dimensional structural diagram of the rotation switching unit of the present invention.

[0020] Figure 3 It is a three-dimensional exploded view of the rotary switching unit of the present invention.

[0021] Figure 4 It is a three-dimensional structural diagram of the horizontal docking tray unit of the present invention.

[0022] Figure 5 It is a three-dimensional exploded view of the horizontal docking tray unit of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the tooling switching system of the present invention.

[0024] Figure numerals: 100-rotation switching unit; 200-horizontal docking unit; 300-operating table; 301-desktop sink; 302-gas distribution assembly; 400-test unit; 1-driving motor; 2-fixed shaft; 3-connecting plate; 4-tooling wheel; 5-cylinder fixing plate; 501-first proximity sensor; 6-second proximity sensor; 7-horizontal moving cylinder; 8-gripping cylinder fixing plate; 801-shading lever; 9-first gripping cylinder; 10-third proximity sensor; 11-fourth proximity sensor Device; 12-first ejection cylinder; 13-first ejection block; 14-second ejection cylinder; 15-second ejection block; 16-fifth proximity sensor; 17-sixth proximity sensor; 18-movable connecting plate; 19-tool moving plate; 191-first docking station; 192-second docking station; 20-second clamping cylinder; 21-third clamping cylinder; 22-second clamping cylinder mounting plate; 23-third clamping cylinder mounting plate; 24-cylinder waterproof cover; 25-linear moving module; 26-wheel waterproof cover. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] A fluid flow test fixture automatic replacement device, comprising: a rotation switching unit 100, a horizontal docking unit 200, and an operating table 300, such as Figure 1 and Figure 6 shown.

[0027] The rotation switching unit 100 includes: a driving motor 1, a fixed shaft 2, a connecting plate 3, a tooling wheel disc 4, a cylinder fixing plate 5, a first proximity sensor 501, a second proximity sensor 6, a horizontal moving cylinder 7, a clamping cylinder fixing plate 8, a light shielding lever 801, a first clamping cylinder 9, a third proximity sensor 10, a fourth proximity sensor 11, a first ejection cylinder 12, a first ejection block 13, a second ejection cylinder 14, a second ejection block 15, and a wheel waterproof cover 26, as shown in FIG. Figure 2 and Figure 3 shown.

[0028] The driving motor 1 in the rotation switching unit 100 is fixed to the table top of the operating table 300. The rotating disk of the driving motor 1 is bolted to the tooling wheel disc 4 through the connecting disk 3. There are 6 tooling placement holes on the tooling wheel disc 4 to realize the rotation and movement of the tooling in the tooling wheel disc. The lower end of the fixed shaft 2 passes through the rotating hole of the driving motor 1 and is fixed to the table top of the operating table 300, and the upper end is bolted to the cylinder fixing plate 5; the rear end of the cylinder fixing plate 5 is connected to the second proximity sensor 6, and the side end is connected to the first proximity sensor 501, and the upper end is bolted to the horizontal moving cylinder 7; the piston push rod of the horizontal moving cylinder 7 is bolted to the clamping cylinder fixing plate 8; the side end of the clamping cylinder fixing plate 8 is installed with a shading lever 801, and the upper end is bolted to the clamping cylinder 9, and the upper end of the clamping cylinder is bolted to the third proximity sensor 10; the clamping and horizontal transportation of the tooling in the rotation switching unit is realized. The wheel waterproof cover 26 is used for overall waterproofing. The fourth proximity sensor 11 is installed on the tooling wheel disc 4 to detect the tooling status.

[0029] The operating table 300 also includes a table sink 301 and a gas distribution block 302. The table sink 301 is fixed to the lower end of the operating table 300, and is connected with a first ejection cylinder 12 and a second ejection cylinder 14 by bolts, so as to realize the vertical transfer of the tooling from the tooling wheel to the clamping cylinder; the end of the piston ejection rod of the first ejection cylinder 12 is connected with a first ejection block 13, and the end of the piston ejection rod of the second ejection cylinder 14 is connected with a second ejection block 15, so as to realize the vertical transfer of the tooling from the clamping cylinder to the horizontal docking unit.

[0030] The horizontal docking unit 200 includes: a fifth proximity sensor 16, a sixth proximity sensor 17, a movable connecting plate 18, a tooling movable plate 19, a first docking station 191, a second docking station 192, a second clamping cylinder 20, a third clamping cylinder 21, a second clamping cylinder mounting plate 22, a third clamping cylinder mounting plate 23, a cylinder waterproof cover 24, and a linear moving module 25; Figure 4 and Figure 5 shown.

[0031] The linear moving module 25 in the horizontal docking unit 200 is fixed to the table top of the operating table 300. The linear moving module 25 is bolted to the tooling moving plate 19 through the movable connecting plate 18 to realize the horizontal transportation of the tooling moving plate. The front end of the tooling moving plate 19 is provided with a first docking station 191 and a second docking station 192. The fifth proximity sensor 16 is installed on the side of the first docking station 191, and the sixth proximity sensor 17 is installed on the side of the second docking station 191 to realize the loading and detection of the tooling in the horizontal docking unit. One end of the tooling moving plate 19 is connected to the second clamping cylinder 20 through the second clamping cylinder mounting plate 22, and the other end is connected to the third clamping cylinder 21 through the third clamping cylinder mounting plate 23 to realize the clamping and fixing of the tooling in the horizontal docking unit. The upper ends of the second clamping cylinder mounting plate 22 and the third clamping cylinder mounting plate 23 are connected to the cylinder waterproof cover 24 by bolts.

[0032] The second clamping cylinder 20 and the third clamping cylinder 21 in the horizontal docking unit 200 can adjust their positions through the linear moving module 25, so that the clamping center of the second clamping cylinder 2 or the third clamping cylinder 21 can coincide with the center of the second ejection block 15, thereby realizing the mutual transfer of the tooling from the horizontal docking unit to the rotation switching unit. The first clamping cylinder 9 of the rotation switching unit 200 can adjust its position through the horizontal moving cylinder 7, so that the clamping center of the first clamping cylinder 9 can coincide with the center of the first ejection block 13, thereby realizing the vertical transfer of the tooling in the rotation switching unit.

[0033] A gas distribution block 302 is installed on the side of the operating table 300, and the horizontal moving cylinder 7, the first clamping cylinder 9, the second clamping cylinder 20, the third clamping cylinder 21, the first ejecting cylinder 12, and the second ejecting cylinder 14 are connected through high-pressure hoses to control the gas connection ports to achieve the reciprocating motion control of the cylinder piston.

[0034] The usage process includes:

[0035] 1. Preparation before starting the tooling switching device:

[0036] Before the tooling switching device is started, high-pressure control gas is provided to the gas distribution assembly 302, 6 tools are placed on the tooling wheel 4, and the drive motor 1 is set to control the motor rotation angle of the corresponding tooling model. The tooling switching device can be started after the sixth proximity sensor 11 and the second proximity sensor 6 detect the tooling homing signal and the linear moving module 25 detects the tooling moving plate 19 homing.

[0037] 2. Operation process of tooling switching device

[0038] (1) The driving motor 1 drives the tooling wheel 4 to rotate to a set angle through the connecting plate 3. The first ejection cylinder 12 ejects the tooling in the tooling wheel 4 through the first ejection block 13 at the head of the piston rod. When the third proximity sensor 10 detects the tooling approach signal, the piston push rod of the first ejection cylinder 13 stops moving, and the first clamping cylinder 9 clamps the tooling. After the piston push rod of the first ejection cylinder 13 shrinks and resets, the piston push rod of the horizontal moving cylinder 7 pushes the clamping cylinder fixing plate 8 and the first clamping cylinder 9 to move horizontally. When the first proximity sensor 501 detects the light shielding lever 801 approach signal, the piston push rod of the horizontal moving cylinder 7 stops moving. The second ejection cylinder 14 pushes the second ejection block 15 at the end of the piston push rod to the lower end of the tooling, and the clamp of the first clamping cylinder 9 is loosened until the tooling sinks to the upper end of the ejection fastener 215. The piston push rod of the horizontal moving cylinder 7 shrinks and drives the first clamping cylinder 9 to reset through the clamping cylinder fixing plate 8.

[0039] (2) The piston push rod of the second ejection cylinder 14 retracts, and the tooling falls into the first docking station 191. When the sixth proximity sensor 17 detects a tooling proximity signal, the third clamping cylinder 21 clamps and fixes the tooling.

[0040] (3) The linear moving module 25 drives the tooling moving plate 19 horizontally by driving the moving connecting plate 18 so that the second docking station 191 moves to the top of the second ejection cylinder 14. Repeat step (1), and the rotation switching unit 100 transfers the second tooling to the upper end of the second ejection block 15 at the end of the piston push rod of the second ejection cylinder 14. The piston push rod of the second ejection cylinder 14 retracts, and the second tooling falls into the second docking station 192. When the fifth proximity sensor 16 detects the tooling proximity signal, the second clamping cylinder 20 clamps and fixes the tooling.

[0041] (4) The linear moving module 25 in the horizontal docking unit 200 moves the first docking station 191 to the test unit 400. After the test is completed, the second docking station 192 moves to the test unit 400, completing the switching of the two test product tooling.

[0042] 3. Tool placement and tool wheel operation process

[0043] (1) The linear moving module 25 in the horizontal docking unit 200 horizontally moves the tooling that has been tested from the test unit 400 to the rotation switching unit 100. The second clamping cylinder 20 releases the tooling by releasing the clamp, and the tooling in the second docking station 192 is ejected by the second ejection block 15 at the end of the piston ejector rod of the second ejection cylinder 14.

[0044] (2) The piston push rod of the horizontal moving cylinder 7 pushes the first clamping cylinder 9 to move. When the first proximity sensor 501 detects that the piston push rod of the horizontal moving cylinder 7 of the shading lever stops moving, the first clamping cylinder 9 clamps the tooling, and at the same time, the piston push rod of the second ejection cylinder 14 shrinks and resets. The driving motor 1 drives the tooling wheel 4 to rotate to the tooling placement hole, and the piston push rod of the horizontal moving cylinder 7 is reset. The first ejection block 13 at the end of the piston push rod of the first ejection cylinder 12 passes through the tooling placement hole of the tooling wheel 4 and pushes to the lower end surface of the tooling. The first clamping cylinder 9 releases the tooling, and the piston push rod of the first ejection cylinder 12 shrinks and resets, and at the same time, the tooling sinks into the tooling placement hole of the tooling wheel 4.

[0045] (3) The linear moving module 25 horizontally moves the first docking station 191 to the second ejection cylinder 14. The tooling in the first docking station 191 is ejected by the second ejection block 15 at the end of the piston ejector rod of the second ejection cylinder 14, and step (2) is repeated to return the tooling to the tooling wheel.

[0046] The present invention has been successfully applied to orifice plate performance tests for many times, verifying the feasibility and reliability of the device of the present invention.

[0047] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

[0048] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. An automatic replacement device for a fluid flow test tool, characterized in that: It comprises a rotation switching unit (100), a horizontal connection unit (200), and an operating table (300); The rotation switching unit (100) comprises: a driving motor (1), a fixed shaft (2), a connecting disk (3), a tooling wheel disk (4), a cylinder fixing plate (5), a first proximity sensor (501), a second proximity sensor (6), a horizontal moving cylinder (7), a clamping cylinder fixing plate (8), a light shielding lever (801), a first clamping cylinder (9), a third proximity sensor (10), a fourth proximity sensor (11), a first ejection cylinder (12), a first ejection block (13), a second ejection cylinder (14), and a second ejection block (15); The driving motor (1) in the rotation switching unit (100) is fixed to the tabletop of the operating table (300); the rotating disk of the driving motor (1) is connected to the tooling wheel disk (4) through the connecting disk (3); the lower end of the fixed shaft (2) passes through the rotating hole of the driving motor (1) and is fixed to the tabletop of the operating table (300), and the upper end is connected to the cylinder fixing plate (5); the rear end of the cylinder fixing plate (5) is connected to the second proximity sensor (6), the side end is connected to the first proximity sensor (501), and the upper end is connected to the horizontal moving cylinder (7); the piston push rod of the horizontal moving cylinder (7) is connected to the clamping cylinder fixing plate (8); the side end of the clamping cylinder fixing plate (8) is installed with a light shielding lever (801), the upper end is connected to the clamping cylinder (9), and the upper end of the clamping cylinder is connected to the third proximity sensor (10); the fourth proximity sensor (11) is installed on the tooling wheel disk (4) for detecting the tooling; The operating table (300) further comprises a table sink (301) and a gas distribution assembly (302); the table sink (301) is fixed to the lower end of the tabletop of the operating table (300), and is connected to a first ejection cylinder (12) and a second ejection cylinder (14), thereby realizing vertical transfer of tooling from the tooling wheel to the clamping cylinder; the end of the piston push rod of the first ejection cylinder (12) is connected to a first ejection block (13), and the end of the piston push rod of the second ejection cylinder (14) is connected to a second ejection block (15), thereby realizing vertical transfer of tooling from the clamping cylinder to the horizontal docking unit; the gas distribution assembly (302) is installed on the side of the operating table (300), and is used to control the horizontal moving cylinder (7), the first clamping cylinder (9), the second clamping cylinder (20), the third clamping cylinder (21), the first ejection cylinder (12), and the second ejection cylinder (14); The horizontal docking unit (200) comprises: a fifth proximity sensor (16), a sixth proximity sensor (17), a movable connecting plate (18), a tooling movable plate (19), a first docking station (191), a second docking station (192), a second clamping cylinder (20), a third clamping cylinder (21), a second clamping cylinder mounting plate (22), a third clamping cylinder mounting plate (23), a cylinder waterproof cover (24), and a linear moving module (25); The linear moving module (25) in the horizontal docking unit (200) is fixed to the tabletop of the operating table (300); the linear moving module (25) is connected to the tooling moving plate (19) through a movable connecting plate (18) to realize the horizontal transfer of the tooling moving plate; a first docking station (191) and a second docking station (192) are arranged at the front end of the tooling moving plate (19); a fifth proximity sensor (16) is installed on the side of the first docking station (191); and a fifth proximity sensor (16) is installed on the side of the second docking station (191). A sixth proximity sensor (17) is provided to realize loading and detection of tooling in the horizontal docking unit; one end of the tooling moving plate (19) is connected to the second clamping cylinder (20) via the second clamping cylinder mounting plate (22), and the other end is connected to the third clamping cylinder (21) via the third clamping cylinder mounting plate (23), so as to realize clamping and fixing of the tooling in the horizontal docking unit; the upper ends of the second clamping cylinder mounting plate (22) and the third clamping cylinder mounting plate (23) are connected to the cylinder waterproof cover (24); The second clamping cylinder (20) and the third clamping cylinder (21) in the horizontal docking unit (200) are adjusted in position by a linear moving module (25) so that the clamping center of the second clamping cylinder (2) or the third clamping cylinder (21) coincides with the center of the second ejection block (15), thereby realizing the mutual transfer of the tooling from the horizontal docking unit to the rotary switching unit; the first clamping cylinder (9) of the rotary switching unit (200) is adjusted in position by a horizontal moving cylinder (7) so that the clamping center of the first clamping cylinder (9) coincides with the center of the first ejection block (13), thereby realizing the vertical transfer of the tooling in the rotary switching unit.

2. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: The tool wheel disc (4) is provided with a plurality of tool placement holes to realize the rotational movement of the tool in the tool wheel disc (4).

3. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: Before the tooling switching device is started, high-pressure control gas is provided to the gas distribution assembly (302), a plurality of tools are placed on the tooling wheel (4), and the driving motor (1) is set to control the motor rotation angle corresponding to the tooling model.

4. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: The gas distribution assembly (302) is connected to the control gas connection ports of the horizontal moving cylinder (7), the first clamping cylinder (9), the second clamping cylinder (20), the third clamping cylinder (21), the first ejecting cylinder (12), and the second ejecting cylinder (14) through a high-pressure hose to realize the reciprocating motion control of the cylinder piston.

5. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: The rotation switching unit (100) further comprises a wheel disk waterproof cover (26), and the wheel disk waterproof cover (26) is used for overall waterproofing.

6. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: The driving motor (1) drives the tooling wheel disc (4) to rotate to a set angle via the connecting disc (3).

7. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: The operation process of the tooling switching device includes: The driving motor (1) drives the tool wheel disc (4) to rotate to a set angle through the connecting disc (3), and the first ejection cylinder (12) ejects the tool in the tool wheel disc (4) through the first ejection block (13) at the head of the piston rod. When the third proximity sensor (10) detects a tool approaching signal, the piston push rod of the first ejection cylinder (13) stops moving, and the clamping head of the first clamping cylinder (9) clamps the tool; after the piston push rod of the first ejection cylinder (13) shrinks and resets, the piston push rod of the horizontal moving cylinder (7) pushes the clamping cylinder fixing plate horizontally. (8) and the first clamping cylinder (9) move horizontally, when the first proximity sensor (501) detects the proximity signal of the light shielding lever (801), the piston push rod of the horizontal moving cylinder (7) stops moving; the second ejection cylinder (14) pushes the second ejection block (15) at the end of the piston push rod to the lower end of the tooling, and the clamping head of the first clamping cylinder (9) is loosened until the tooling sinks to the upper end of the second ejection block (15); the piston push rod of the horizontal moving cylinder (7) contracts, and drives the first clamping cylinder (9) to reset through the clamping cylinder fixing plate (8); The piston push rod of the second ejection cylinder (14) retracts, and the tooling falls into the first docking station (191). When the sixth proximity sensor (17) detects a tooling proximity signal, the third clamping cylinder (21) clamps and fixes the tooling; The linear moving module (25) drives the movable connecting plate (18) to horizontally drive the tool moving plate (19) so that the second docking station (191) moves to the top of the second ejection cylinder (14); then the rotary switching unit (100) transfers the second tool to the upper end of the second ejection block (15) at the end of the piston push rod of the second ejection cylinder (14); the piston push rod of the second ejection cylinder (14) retracts, and the second tool falls into the second docking station (192). When the fifth proximity sensor (16) detects a tool proximity signal, the second clamping cylinder (20) clamps the fixed tool; The linear moving module (25) in the horizontal docking unit (200) moves the first docking station (191) to the test unit (400), and after the test is completed, the second docking station (192) moves to the test unit (400), completing the switching of two test product tooling.

8. The automatic replacement device for liquid flow test tooling according to claim 1, characterized in that: The tool placement tool wheel operation process includes: The linear moving module (25) in the horizontal docking unit (200) horizontally moves the tooling that has been tested from the test unit (400) to the rotation switching unit (100); the clamp of the second clamping cylinder (20) loosens the tooling, and the tooling in the second docking station (192) is ejected by the second ejection block (15) at the end of the piston ejector rod of the second ejection cylinder (14); The piston push rod of the horizontal moving cylinder (7) pushes the first clamping cylinder (9) to move. When the first proximity sensor (501) detects that the piston push rod of the horizontal moving cylinder (7) of the shading lever stops moving, the clamp head of the first clamping cylinder (9) clamps the tooling, and at the same time, the piston push rod of the second ejection cylinder (14) shrinks and resets; the driving motor (1) drives the tooling wheel disc (4) to rotate to the tooling placement hole, the piston push rod of the horizontal moving cylinder (7) resets, and the first ejection block (13) at the end of the piston push rod of the first ejection cylinder (12) passes through the tooling placement hole of the tooling wheel disc (4) and pushes to the lower end surface of the tooling; the clamp head of the first clamping cylinder (9) releases the tooling, and the piston push rod of the first ejection cylinder (12) shrinks and resets, and at the same time, the tooling sinks into the tooling placement hole of the tooling wheel disc (4); The linear moving module (25) horizontally moves the first docking station (191) to the second ejection cylinder (14); the tooling in the first docking station (191) is ejected by the second ejection block (15) at the end of the piston ejector rod of the second ejection cylinder (14), thereby further placing the tooling on the tooling wheel.

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