A controller for a multi-station testing machine

Abstract

The present application relates to the field of controller testing machine, disclose a kind of controller multi-station testing machine, including lathe, setting on the index plate mechanism of lathe, fixed in the housing of lathe and a plurality of threaded joints for conducting test, a plurality of base are fixedly installed on the index plate mechanism, recess for placing the controller to be tested is opened in the base, and positioning assembly is arranged in recess, positioning assembly is used to push controller along first direction, so that controller is limited in recess along first direction.The present application is rotated by threaded joint and is rotated into the test form of conducting by approaching controller, keeps the meshing sealing characteristic of threaded itself, reduces the leakage possibility of test liquid, guarantees test result accuracy, while threaded joint is automatically rotated into, can guarantee dismounting efficiency, eliminates the relative technical contradiction that bolt dismounting is complicated and inefficient and bolt abutting conducting test is easy to leak, and sealing reliability and test efficiency are considered.

Description

Technical Field

[0001] This invention relates to the field of controller testing machine technology, and in particular to a controller multi-station testing machine. Background Technology

[0002] Flow controllers are widely used in specific scenarios such as intelligent robot control, automated production lines, and after-sales maintenance services. Before use, the flow controller needs to be tested for performance. The outlet pipe is fixed to the flow controller with bolts, and the flow sensor converts the change in flow rate into an electrical signal to obtain the test results.

[0003] The above testing methods are disclosed in the corresponding patents, such as Chinese patent CN117075575B, which discloses a flow controller testing device. It solves the problem that in the prior art, the flow controller testing device needs to be assembled and disassembled repeatedly during testing, which results in low testing efficiency when testing a large number of flow controllers.

[0004] For example, Chinese patent CN115793619B discloses a flow controller testing device. It uses real-time data from flow and pressure sensors and the degree of change between the data to determine the performance of the flow control sensor, thereby determining whether the flow controller can be applied to a set hydrostatic guide rail, realizing the performance test of a single flow controller. At the same time, the flow controller testing device can also select flow controllers with similar performance that can meet the requirements of the set hydrostatic guide rail.

[0005] The aforementioned disclosed technologies include those that use bolt assembly for testing, which suffer from problems such as cumbersome assembly and disassembly and low efficiency. Other technologies use direct connection without bolts, but the presence of threads poses a risk of leakage. It is evident that the cumbersome assembly with bolts and the leakage risk without bolts are often contradictory issues that technicians face during testing.

[0006] Therefore, it is necessary to provide a controller multi-station testing machine to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a controller multi-station testing machine to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-station controller testing machine, comprising a machine tool, an indexing plate mechanism disposed on the machine tool, a cover fixed on the machine tool, and a plurality of threaded joints for continuity testing. A plurality of bases are fixedly installed on the indexing plate mechanism, and the bases are provided with grooves for placing the controller to be tested, and positioning components are disposed in the grooves. The positioning components are used to push the controller along a first direction, so that the controller is limited in the groove along the first direction.

[0009] The housing is equipped with a control component, which is used to drive the threaded joint to rotate around its own axis and reciprocate along the second direction. The first direction and the second direction are perpendicular to each other. When the threaded joint is fed towards the controller along the second direction under the drive of the control component, it first pushes the controller to move along the second direction until the controller is limited in the groove along the second direction. Then it continues to rotate and feed and screws into the inner thread hole of the controller to form a connection.

[0010] The control component is configured to drive the threaded connector to continue rotating when the threads of the threaded connector are not aligned with the threads of the controller's internal thread hole, until the threads automatically screw into the internal thread hole after they align.

[0011] As a further aspect of the present invention: the control component includes a transmission rod fixedly connected to a threaded joint, a first cylinder fixedly installed on a machine tool, and a drive component disposed within a housing; a plurality of transmission rods are connected by belt drive to form a transmission connection, and the drive component is used to start the belt drive; the output shaft of the first cylinder is fixedly connected to a partition sleeved on the outside of all transmission rods, and a spring is sleeved on the outer surface of the transmission rod, with one side of the spring abutting against the partition.

[0012] As a further embodiment of the present invention: the transmission rod and the belt drive pulley are keyed together, the belt drive pulley is provided with a corresponding keyway, the outer surface of the transmission rod is fixedly mounted with a shaft edge, and the partition plate abuts against the end of the shaft edge by a spring.

[0013] As a further aspect of the present invention: a three-port seat is rotatably mounted on the outer surface of the threaded connector. The three-port seat has three interconnected openings. The first opening allows the mating end of the threaded connector to extend out. The second opening allows the transmission rod to extend in and be fixedly connected to the threaded connector. The third opening is fixedly connected to a hose for conveying test liquid.

[0014] As a further aspect of the present invention: the other side of the spring abuts against the surface of the three-port seat, and the first cylinder compresses the spring through the partition to elastically push, thereby driving the three-port seat and the threaded joint to elastically feed along the second direction.

[0015] As a further aspect of the present invention: the number of the three-port seats is adapted to the threaded joint, and adjacent two three-port seats are fixedly connected by a connecting rod.

[0016] As a further aspect of the present invention: the positioning component includes a second cylinder fixedly installed in the base and a floating clamp driven by the second cylinder; the floating clamp is slidably engaged with the output end of the second cylinder.

[0017] As a further aspect of the present invention: the surface of the floating clamp is provided with a sliding groove for the output end of the second cylinder to slide and engage, and the floating clamp and the controller can slide relative to the second cylinder in the second direction through the sliding groove.

[0018] As a further aspect of the present invention: the floating clamp is U-shaped, and the spacing dimension inside the floating clamp along the second direction is greater than the length dimension of the controller along the second direction, so that the controller can move inside the floating clamp along the second direction.

[0019] As a further aspect of the present invention: a tapered head is fixedly installed at the end of the threaded connector facing the controller, and the diameter of the tapered head is smaller than the thread diameter of the threaded connector.

[0020] Compared with the prior art, the beneficial effects of the present invention are: by rotating the threaded connector and screwing it close to the controller to conduct the test, the thread itself maintains its meshing and sealing characteristics, reduces the possibility of leakage of the test liquid, and ensures the accuracy of the test results. At the same time, the automatic screwing of the threaded connector can ensure disassembly efficiency, eliminate the relative technical contradiction between the cumbersome and inefficient disassembly and assembly with bolts and the easy leakage of the conduction test without bolts, and take into account both sealing reliability and test efficiency.

[0021] By using a threaded connector to move the controller along the second direction, the threaded connector simultaneously serves the dual functions of limiting and driving the controller in the second direction and connecting the liquid flow. Initially, the controller is pushed to move along the second direction to the side wall of the groove to complete the limiting. Subsequently, it is screwed into the internal threaded hole to allow the liquid to flow. The positioning and limiting functions and the test connection functions are integrated into the same component, reducing the number of additional mechanisms and effectively simplifying the overall structure of the equipment. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a perspective view of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the base and controller structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the floating clamp and chute structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the transmission rod and belt drive structure of the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle;

[0028] Figure 6 This is a schematic diagram of the threaded connector and three-port seat structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the three-port seat and connecting rod structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the conical head and flipping assembly structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the conical head and push plate structure of the present invention;

[0032] Figure 10 for Figure 9 Enlarged view of the structure at point B in the middle.

[0033] In the diagram: 1. Machine tool; 2. Indexing plate mechanism; 3. Base; 4. Positioning component; 5. Threaded joint; 6. Cover; 7. Control component; 8. Tilting component; 9. Controller; 401. Floating clamp; 402. Second cylinder; 403. Slide groove; 501. Three-way seat; 502. Hose; 503. Conical head; 504. Connecting rod; 701. Transmission rod; 702. Belt drive; 703. Partition plate; 704. Spring; 705. Shaft edge; 706. First cylinder; 801. Push plate; 802. Base; 901. Internal threaded hole. Detailed Implementation

[0034] Example 1:

[0035] Please see Figures 1 to 6 This invention provides a multi-station testing machine for a controller, addressing the issue that during testing of a flow controller 9, repeated assembly and disassembly using bolts is cumbersome, while using bolt-on continuity testing poses a risk of leakage. The testing machine includes a machine tool 1 and an indexing mechanism 2 mounted on the machine tool 1. Four bases 3 arranged in a circular array are fixedly mounted on the indexing mechanism 2. The outer surface of each base 3 has a groove for placing the controller 9, and a positioning component 4 is provided within the groove to limit the controller 9 along a first direction. After the controller 9 is limited along the first direction, the positioning component 4 allows the controller 9 to fit against the groove wall away from the positioning component 4.

[0036] Among them, such as Figure 3As shown, after the controller 9 is placed in the groove and the positioning component 4 achieves the first direction limit, it is still in an unlimited state along the second direction. For this reason, a cover 6 is fixedly installed on the machine tool 1. Two threaded joints 5 are provided on the side of the cover 6 near the bottom. The inside of the cover 6 is provided with a control component 7 for driving the threaded joints 5 to move. When the control component 7 is activated, it can drive the threaded connector 5 to rotate and approach the controller 9 in the second direction. Since the controller 9 is in an active state in the second direction, when the threaded connector 5 initially approaches the controller 9, it can push the controller 9 to move in the groove in the second direction until the controller 9 is in contact with the side wall of the adjacent positioning component 4. At this time, the controller 9 is limited in both the first and second directions in the groove and can no longer move. The threaded connector 5 continues to rotate and approach the controller 9. At this time, the threaded connector 5 can automatically screw into the corresponding internal thread hole 901 on the controller 9. When the thread of the threaded connector 5 does not correspond to the thread of the internal thread hole 901, the control component 7 can drive the threaded connector 5 to continue to rotate to avoid jamming until the thread of the threaded connector 5 corresponds to the thread of the internal thread hole 901 and is screwed in.

[0037] This invention uses a control component 7 to drive the threaded connector 5 to rotate and move relative to the internal threaded hole 901 of the controller 9. The threaded connector 5 serves two purposes: firstly, it pushes the controller 9 to move in the second direction, acting as a limiting mechanism for the controller 9 in that direction; secondly, it can automatically screw into the internal threaded hole 901 to form a connection, facilitating subsequent flow rate testing. Furthermore, if the threads of the threaded connector 5 do not align with the threads of the internal threaded hole 901, the control component 7 can continue to rotate the threaded connector 5 to prevent jamming, ensuring that the threaded connector 5 can be smoothly screwed into the internal threaded hole 901 for testing. Moreover, this invention maintains the assembly and testing method of threaded connections. After the connection test is performed, liquid will not flow out from the grooves of the threads, avoiding the risk of leakage during testing and ensuring the accuracy of the test results. This eliminates the relative contradiction between the inconvenience of bolt assembly and the potential leakage of not using bolts.

[0038] It should be noted that the first and second directions are designed perpendicularly, and after the controller 9 is placed in the groove, the internal threaded hole 901 is located on its surface away from the groove (facing outwards), thus automatically corresponding with the cover 6 and the threaded joint 5 when the indexing plate mechanism 2 is activated. In the above structure, four workstations are formed by the indexing plate mechanism 2 and the base 3 to realize multi-station processing of the controller 9, such as loading and unloading; the specific structure and working principle of the indexing plate mechanism 2 can be selected from the existing technology, and will not be described in detail in this invention.

[0039] Reference Figure 6In an optional embodiment of the present invention, the threaded connector 5 is rotatably mounted inside the three-port seat 501. The three-port seat 501 has three openings: a left opening for the threaded connector 5 to extend out, and the threaded connector 5 extending to the right opening (not extended). The control component 7 corresponds to the right opening and is fixedly connected to the portion of the threaded connector 5 extending to the right opening. After activation, the control component 7 can drive the threaded connector 5 to rotate and move in a second direction. A hose 502 is fixedly connected to the upper opening of the three-port seat 501. The hose 502 is connected to an external liquid supply device for conveying the liquid required for testing.

[0040] In the above structure, the threaded connector 5 and the three-port socket 501 are in a rotatable connection state. Liquid can flow to the threaded connector 5 through the hose 502 and the three-port socket 501. After the threaded connector 5 is screwed into the internal threaded hole 901, the liquid can also be transferred to the controller 9, thereby completing the testing process. Of course, the rotatable joint between the three-port socket 501 and the threaded connector 5 is internally sealed, and the test liquid leaks from the gap between the three-port socket 501 and the threaded connector 5. Through the design of the three-port socket 501, the threaded connector 5, and the hose 502, the structure is effectively simplified and it can form an effective cooperation with the controllable component 7, while meeting the requirements of low cost and reusability.

[0041] Meanwhile, a tapered head 503 is fixedly installed on the side of the threaded connector 5 away from the three-way seat 501. The diameter of the tapered head 503 is smaller than the diameter of the threaded connector 5. When the threaded connector 5 is screwed into the internal threaded hole 901, the tapered head 503 can first be inserted into the internal threaded hole 901 to achieve a certain positioning effect. It can be understood that the diameter of the tapered head 503 is matched with the diameter of the internal threaded hole 901, and the positioning effect is best at this time.

[0042] Reference Figure 4 and Figure 5 In an optional embodiment of the present invention, the control component 7 includes a transmission rod 701 movably mounted inside the housing 6, a first cylinder 706 fixedly mounted on the machine tool 1, and a drive component disposed inside the housing 6. The number of transmission rods 701 corresponds to the number of threaded joints 5 and is fixedly connected to them. In this embodiment, there are two transmission rods 701, and the two transmission rods 701 are connected by a belt drive 702, thereby driving the two threaded joints 5 to rotate and move synchronously. At the same time, a partition plate 703 is fixedly mounted on the output shaft of the first cylinder 706 and sleeved on the outside of the two transmission rods 701. A spring 704 is sleeved on the outer surface of the transmission rod 701. The two sides of the spring 704 abut against the partition plate 703 and the three-port seat 501, respectively. The first cylinder 706 and the spring 704 drive the three-port seat 501 and the threaded joint 5 to move in the second direction, and the movement process is stable.

[0043] The driving component is used to start the belt drive 702. It adopts existing mature technology, which is not shown in the figure. For example, the driving component is a motor and two gears. The two gears are fixedly connected to the output shaft of the motor and the pulley of the belt drive 702, respectively. Alternatively, the driving component is a motor, and the output shaft of the motor is fixed to another independent pulley. This pulley forms a common transmission connection with the belt drive 702. Similarly, the driving component can complete the corresponding drive of the belt drive 702 after starting, thereby realizing the synchronous rotation of the two transmission rods 701 and the two threaded joints 5.

[0044] Furthermore, such as Figure 5 As shown, the transmission rod 701 and the pulley of the belt drive 702 are assembled by a key shaft. A shaft edge 705 is fixedly installed on the outer surface of the transmission rod 701. A keyway is provided on the pulley of the belt drive 702 for the shaft edge 705 to engage. The synchronous rotation of the transmission rod 701 and the belt drive 702 is achieved through the shaft edge 705 and the keyway. The transmission rod 701 also has the feasibility of moving in the second direction, and can drive the threaded joint 5 to move in the second direction under the drive of the partition plate 703 and the spring 704.

[0045] Specifically, such as Figure 4 and Figure 5 As shown, when the partition 703 is sleeved on the transmission rod 701, it is pushed by the elastic force of the spring 704. At this time, the surface of the partition 703 away from the spring 704 can abut against the shaft edge 705. When the partition 703 is subsequently driven by the first cylinder 706, the abutment between the partition 703 and the shaft edge 705 can push the transmission rod 701 stably away from the controller 9 in the second direction.

[0046] It should be noted that the aforementioned shaft edge 705 structure serves two purposes: firstly, it cooperates with the belt drive 702 to enable the drive rod 701 to rotate synchronously and move along the second direction; secondly, it cooperates with the partition 703 to ensure that the drive rod 701 moves stably away from the controller 9 along the second direction. The aforementioned three-port seat 501 structure serves two purposes: firstly, it rotatably connects and accommodates the threaded connector 5; secondly, it fixes the connector to accommodate the hose 502, thereby enabling the flow of liquid to the controller 9; and thirdly, it abuts against the side of the spring 704 away from the partition 703, providing an effective basis for the movement of the threaded connector 5 along the second direction. Therefore, the functionality and practicality of the shaft edge 705 and the three-port seat 501 are effectively improved. The integrated design simplifies the cooperation between the hydraulic circuit and the mechanical structure, resulting in high component reusability, reducing manufacturing costs, and facilitating later maintenance and replacement.

[0047] Correspondingly, such as Figure 7As shown, a connecting rod 504 is fixedly installed between the two three-port seats 501. The connecting rod 504 can keep the two three-port seats 501 in a stable position, prevent the two three-port seats 501 from flipping and affecting the screwing connection between the threaded connector 5 and the internal threaded hole 901, and also prevent the hose 502 from bending or folding at a large angle, thereby ensuring the stable delivery and flow of liquid.

[0048] Reference Figure 2 and Figure 3 In an optional embodiment of the present invention, the positioning component 4 includes a second cylinder 402 fixedly installed in the base 3 and a floating clamp 401 disposed in the groove. The second cylinder 402 is used to drive the floating clamp 401 to move along a first direction, and the floating clamp 401 has the feasibility to move along a second direction based on the second cylinder 402. Specifically, a sliding groove 403 is provided on the surface of the floating clamp 401 away from the controller 9. The sliding groove 403 is in a sliding engagement state with the output shaft of the second cylinder 402. Through the sliding groove 403, the second cylinder 402 can drive the floating clamp 401 to reciprocate along the first direction, and the floating clamp 401 can slide along the second direction. After the second cylinder 402 drives the controller 9 to move through the floating clamp 401 to achieve the first direction limit, the threaded joint 5 rotates and approaches the controller 9, pushing the controller 9 to move along the second direction and complete the second direction limit.

[0049] Specifically, such as Figure 3 As shown, the floating clamp 401 has a U-shaped design. After the controller 9 is placed in the groove, it is located inside the floating clamp 401. The spacing dimension of the floating clamp 401 along the second direction is greater than the length dimension of the controller 9 along the second direction. When the controller 9 moves along the second direction and completes the limit, the controller 9 is in contact with the groove wall and simultaneously with the inner wall of the floating clamp 401 away from the threaded joint 5. At this time, the surface of the controller 9 with the inner threaded hole 901 is separated from the floating clamp 401. During the subsequent process of the threaded joint 5 being screwed out from the inner threaded hole 901, if the controller 9 is driven away along the second direction, the controller 9 can be brought close to the inner wall of the threaded joint 5 by the floating clamp 401, which can prevent the controller 9 from falling out of the groove and also ensure the stable screwing out of the threaded joint 5 and the inner threaded hole 901.

[0050] Among them, such as Figure 3 As shown, a notch can be opened on the left side of the groove for the insertion of the floating clip 401. After the controller 9 is limited in the first and second directions within the groove, the upper and left sides of the controller 9 can abut against the groove, while the left side of the floating clip 401 can be inserted into the notch. It should be noted that the aforementioned limitation in the first direction is performed at other positions of the indexing plate mechanism 2, that is, before corresponding with the cover 6 and the threaded joint 5, the second cylinder 402 has already driven the floating clip 401 to move and complete the limitation of the controller 9 in the first direction.

[0051] In summary, the test method of rotating the threaded connector 5 and screwing it close to the controller 9 to conduction maintains the meshing and sealing characteristics of the thread itself, reduces the possibility of leakage of the test liquid, and ensures the accuracy of the test results. At the same time, the automatic screwing of the threaded connector 5 can ensure disassembly efficiency, eliminate the relative technical contradiction between the cumbersome and inefficient disassembly and assembly with bolts and the easy leakage of conduction tests without bolts, and balance the sealing reliability and test efficiency.

[0052] By pushing the controller 9 along the second direction through the threaded connector 5, the threaded connector 5 simultaneously performs the dual functions of second-direction limit drive and liquid flow docking. Initially, it pushes the controller 9 to move along the second direction to the side wall of the groove to complete the limit. Subsequently, it is screwed into the internal threaded hole 901 to form liquid flow. The positioning limit and test docking functions are integrated into the same component, reducing the number of additional mechanisms and effectively simplifying the overall structure of the equipment.

[0053] Through the elastic design of the three-port seat 501, spring 704 and partition 703, a rotating approach fit elastic floating is formed. When the threaded connector 5 and the thread of the internal threaded hole 901 are not aligned, the threaded connector 5 can continue to rotate until the threads are aligned and then automatically screw in. It has a buffering effect to avoid thread jamming and part breakage caused by rigid feed, and significantly improves the docking success rate and equipment operation stability.

[0054] Please see Figures 8 to 10 Considering that the pushing and limiting of the controller 9 in the second direction relies solely on the threaded connector 5, in order to avoid damage to the threaded end faces of the threaded connector 5 and the internal threaded hole 901, which would affect subsequent product use, and to prevent the threaded connector 5 from prematurely aligning and starting to screw into the internal threaded hole 901, thus preventing the controller 9 from being pushed and limited in the second direction, a flipping component 8 is provided on the outer surface of the conical head 503. When flipped, the flipping component 8 can push the controller 9; when folded, the flipping component 8 can be retracted into the internal threaded hole 901 without affecting the screwing of the threaded connector 5 into the internal threaded hole 901.

[0055] Reference Figure 10 In an optional embodiment of the present invention, the flipping assembly 8 includes a plurality of cavities formed on the outer surface of the conical head 503, and a push plate 801 is disposed inside the cavity. The push plate 801 is rotatably mounted on the base 802 by a rotating shaft and a torsion spring. The torsion spring causes the push plate 801 to have a tendency to flip and be in a vertical state. Figure 8 In this state, the push plate 801 can act as a pusher to move the controller 9 in the second direction, and when the push plate 801 rotates and is housed in the cavity in a horizontal position ( Figure 9 (State) will not affect the screwing-in and conduction of the threaded joint 5 and the internal threaded hole 901.

[0056] Specifically, when the push plate 801 is in a vertical position, the end of the push plate 801 away from the conical head 503 extends relative to the threaded joint 5. That is, at this time, the end of the push plate 801 away from the conical head 503 is higher than the threaded joint 5 and also higher than the position of the internal threaded hole 901. This allows the push plate 801 to directly contact the surface of the controller 9 located around the internal threaded hole 901 when it moves with the conical head 503. Subsequently, when the controller 9 is limited to a position in the second direction and can no longer move, the continued movement of the conical head 503 will cause the push plate 801 to rotate and be housed in the cavity. At this time, the threaded joint 5 and the internal threaded hole 901 can be screwed in normally.

[0057] Correspondingly, such as Figure 10 As shown, when the push plate 801 is in a horizontal state, its length along the second direction is greater than the thread pitch. Therefore, when the subsequent threaded connector 5 is screwed out from the internal threaded hole 901, the push plate 801 will not get stuck with the thread in the internal threaded hole 901 even if it is slightly tilted. To this end, an arc-shaped chamfer can be opened on the side of the push plate 801 away from the base 802, or a flat area can be added to the side of the push plate 801 away from the base 802 to ensure smooth movement.

[0058] In summary, by combining the conical head 503, push plate 801, base 802, and torsion spring, the direct contact between the threaded connector 5 and the internal threaded hole 901 is changed to direct contact between the push plate 801 and the surface of the controller 9. This effectively reduces damage to the threaded end faces of the threaded connector 5 and the internal threaded hole 901, ensuring the subsequent use of the controller 9 and the service life of the threaded connector 5. At the same time, it prevents the threads of the threaded connector 5 and the internal threaded hole 901 from being screwed in prematurely, ensuring the limited position of the controller 9 in the second direction and guaranteeing the smooth progress of subsequent performance tests.

[0059] Based on the above design, the overall working principle of the testing machine will now be explained:

[0060] S1. The operator or robot places the controller 9 to be tested into the groove of the base 3. The controller 9 naturally falls into the internal space of the floating clamp 401. Then, the second cylinder 402 is activated, which drives the floating clamp 401 to move in the first direction, pushing the controller 9 to fit against the groove wall away from the floating clamp 401, thus completing the first direction limit of the controller 9. At this time, the controller 9 still has a degree of freedom of movement in the second direction. Then, the indexing plate mechanism 2 is activated, which drives the four bases 3 to rotate synchronously, transferring the controller 9, which has completed the first direction positioning, to the corresponding position of the cover 6, so that the screw hole 901 inside the controller 9 corresponds to the threaded joint 5 inside the cover 6 in the second direction.

[0061] S2. The drive unit and the first cylinder 706 are activated. The drive unit drives the two transmission rods 701 to rotate synchronously via the belt drive 702, which in turn drives the threaded joint 5 and the conical head 503 to rotate continuously. The first cylinder 706 drives the partition 703 to move towards the controller 9. The partition 703 compresses the spring 704 and pushes the three-port seat 501 and the threaded joint 5 together along the second direction towards the inner threaded hole 901. The push plate 801 is kept vertically flipped out under the action of the torsion spring and contacts the surface around the inner threaded hole 901 of the controller 9, which drives the controller 9 and the floating clamp 401 to move together along the second direction until the controller 9 corresponds to and fits against the groove wall, thus completing the limiting of the controller 9 along the second direction.

[0062] S3. After the controller 9 reaches the second direction limit, it cannot move further. The threaded connector 5 continues to rotate and feed. The push plate 801 flips and is stored in the cavity of the conical head 503. If the thread of the threaded connector 5 is not aligned with the internal threaded hole 901, the threaded connector 5 will rotate freely under the elastic pressing action of the spring 704 until the thread is aligned and it will automatically screw into the internal threaded hole 901, forming a fluid circuit.

[0063] S4. The external liquid supply equipment is started. The liquid flows into the controller under test 9 through the hose 502, the three-port seat 501, and the threaded connector 5 to complete the performance test (the flow sensor and other structures required for the test are all existing mature technologies and will not be described in detail here).

[0064] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A multi-station controller testing machine, comprising a machine tool, an indexing plate mechanism mounted on the machine tool, a cover fixed on the machine tool, and a plurality of threaded joints for continuity testing, wherein a plurality of bases are fixedly mounted on the indexing plate mechanism, characterized in that: The base has a groove for placing the controller to be tested and a positioning component is provided in the groove. The positioning component is used to push the controller in a first direction so that the controller is limited in the groove in the first direction. The housing is equipped with a control component, which is used to drive the threaded joint to rotate around its own axis and reciprocate along the second direction. The first direction and the second direction are perpendicular to each other. When the threaded joint is fed towards the controller along the second direction under the drive of the control component, it first pushes the controller to move along the second direction until the controller is limited in the groove along the second direction. Then it continues to rotate and feed and screws into the inner thread hole of the controller to form a connection. The control component is configured to drive the threaded connector to continue rotating when the threads of the threaded connector are not aligned with the threads of the internal thread hole of the controller, until the threads are aligned and automatically screwed into the internal thread hole.

2. The controller multi-station testing machine according to claim 1, characterized in that, The control assembly includes a transmission rod fixedly connected to a threaded joint, a first cylinder fixedly mounted on the machine tool, and a drive component disposed within a housing; the transmission rods are connected by a belt drive, and the drive component is used to start the belt drive; the output shaft of the first cylinder is fixedly connected to a partition sleeved on the outside of all the transmission rods, and a spring is sleeved on the outer surface of the transmission rod, with one side of the spring abutting against the partition.

3. The controller multi-station testing machine according to claim 2, characterized in that, The transmission rod and the belt drive pulley are keyed together. The belt drive pulley has a corresponding keyway. A shaft edge is fixedly installed on the outer surface of the transmission rod. The partition plate abuts against the end of the shaft edge through a spring.

4. The controller multi-station testing machine according to claim 2, characterized in that, The outer surface of the threaded connector is rotatably mounted with a three-port seat. The three-port seat has three interconnected openings. The first opening allows the mating end of the threaded connector to extend out. The second opening allows the transmission rod to extend in and be fixedly connected to the threaded connector. The third opening is fixedly connected to a hose for conveying test liquid.

5. The controller multi-station testing machine according to claim 4, characterized in that, The other side of the spring abuts against the surface of the three-port seat. The first cylinder compresses the spring through the partition and pushes it elastically, causing the three-port seat and the threaded joint to feed elastically in the second direction.

6. The controller multi-station testing machine according to claim 4, characterized in that, The number of the three-port seats is adapted to the threaded joint, and adjacent three-port seats are fixedly connected by a connecting rod.

7. The controller multi-station testing machine according to claim 1, characterized in that, The positioning component includes a second cylinder fixedly installed in the base and a floating clamp driven by the second cylinder; the floating clamp is slidably engaged with the output end of the second cylinder.

8. The controller multi-station testing machine according to claim 7, characterized in that, The surface of the floating clamp is provided with a sliding groove for the output end of the second cylinder to slide and engage. The sliding groove allows the floating clamp and the controller to slide relative to the second cylinder in the second direction.

9. The controller multi-station testing machine according to claim 7, characterized in that, The floating clamp has a U-shaped design, and the spacing dimension inside the floating clamp along the second direction is greater than the length dimension of the controller along the second direction, so that the controller can move inside the floating clamp along the second direction.

10. The controller multi-station testing machine according to any one of claims 1-9, characterized in that, A tapered head is fixedly installed at the end of the threaded connector facing the controller, and the diameter of the tapered head is smaller than the thread diameter of the threaded connector.

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