A control system capable of automatically switching cabins and automatically sealing and a control method thereof

Abstract

The present invention relates to a control system capable of automatically switching cabins and automatically sealing and a control method thereof, the control system comprising a lower cavity, an upper cavity one, an upper cavity two, an upper cavity one driving module, an upper cavity two driving module and a PLC module; the upper cavity one is driven by the upper cavity one driving module, so that it moves between the upper cavity sealing position and the upper cavity one initial position; the upper cavity two is driven by the upper cavity two driving module, so that it moves between the upper cavity sealing position and the upper cavity two initial position; the upper cavity one driving module and the upper cavity two driving module are both controlled by the PLC module, and the upper cavity one and the upper cavity two are automatically switched; an inflatable sealing ring is installed on the top of the lower cavity, and the inflatable sealing ring is controlled by the PLC module. The present invention can quickly replace the upper cavity and automatically seal the upper and lower cavities, greatly reducing the time that the contents of the lower cavity are exposed to the air, improving product quality, being simple to operate, and reducing the labor intensity and labor cost of workers.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser melting additive manufacturing, and in particular relates to a control system capable of automatically switching and sealing cabins and a control method thereof. Background Art

[0002] In the current manufacturing process of additive manufacturing equipment, the equipment usually needs to replace different cabins according to different needs (such as printing, cleaning powder, etc.), and the replacement and sealing of different cabins usually require separate motors or manual work, which is time-consuming, labor-intensive, and cumbersome to operate. Frequent manual intervention causes the upper surface of the printed workpiece to be exposed to the air for a long time, which will also seriously affect the product quality. Therefore, it is urgent to develop a control system and control method that can automatically switch cabins and automatically seal. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a control system and a control method thereof which can automatically switch cabins and automatically seal. The control system is easy for equipment operators to use and accept, improves the speed of cabin replacement, and simplifies cabin replacement and enables single-person operation.

[0004] The present invention is implemented as follows: a control system capable of automatically switching cabins and automatically sealing comprises a lower cavity and an upper cavity, wherein the upper cavity is located above the lower cavity;

[0005] The upper cavity includes an upper cavity one and an upper cavity two, and the control system also includes an upper cavity one driving module, an upper cavity two driving module and a PLC module; the upper cavity one is driven by the upper cavity one driving module to move between the upper cavity sealing position and the upper cavity one initial position, so as to realize the alignment or separation of the upper cavity one with the lower cavity; the upper cavity two is driven by the upper cavity two driving module to move between the upper cavity sealing position and the upper cavity two initial position, so as to realize the alignment or separation of the upper cavity two with the lower cavity; the upper cavity one driving module and the upper cavity two driving module are both controlled by the PLC module to perform corresponding actions and realize automatic switching between the upper cavity one and the upper cavity two;

[0006] An inflatable sealing ring is installed on the top of the lower cavity, and the inflatable sealing ring is connected to the PLC module through an inflatable sealing ring solenoid valve, and the sealing between the lower cavity and the upper cavity is achieved through the control of the PLC module; a lower cavity bottom plate is installed in the lower cavity, and the lower cavity bottom plate is driven by the bottom plate driving module to move up and down; the bottom plate driving module is controlled by the PLC module to perform corresponding actions.

[0007] In the above technical scheme, preferably, the upper cavity one driving module includes an upper cavity one cylinder, an upper cavity one forward solenoid valve and an upper cavity one backward solenoid valve, and the output end of the PLC module is connected to the upper cavity one cylinder through the upper cavity one forward solenoid valve and the upper cavity one backward solenoid valve, respectively, and the upper cavity one cylinder is used to drive the upper cavity one to move along the upper cavity one guide module; the upper cavity two driving module includes an upper cavity two cylinder, an upper cavity two forward solenoid valve and an upper cavity two backward solenoid valve, and the output end of the PLC module is connected to the upper cavity two cylinders through the upper cavity two forward solenoid valve and the upper cavity two backward solenoid valve, respectively, and the upper cavity two cylinders are used to drive the upper cavity two to move along the upper cavity two guide module; the upper cavity one guide module and the upper cavity two guide module are vertically distributed above and below the upper cavity.

[0008] In the above technical scheme, it is further preferred that the head and tail parts of the upper cavity one cylinder are provided with an upper cavity one cylinder extended into position sensor and an upper cavity one cylinder retracted into position sensor, and the head and tail parts of the upper cavity two cylinder are provided with an upper cavity two cylinder extended into position sensor and an upper cavity two cylinder retracted into position sensor, the upper cavity one cylinder extended into position sensor, the upper cavity one cylinder retracted into position sensor, the upper cavity two cylinder extended into position sensor, and the upper cavity two cylinder retracted into position sensor are respectively connected to the input end of the PLC module; the upper cavity one cylinder extended into position sensor and the upper cavity one cylinder retracted into position sensor are respectively used to detect the extension and retraction of the upper cavity one cylinder, and feed back to the PLC module; the upper cavity two cylinder extended into position sensor and the upper cavity two cylinder retracted into position sensor are respectively used to detect the extension and retraction of the upper cavity two cylinders, and feed back to the PLC module.

[0009] In the above technical scheme, it is further preferred that the upper cavity one guide module includes an upper cavity one support rail group and an upper cavity one rail slider group, and the bottom of the upper cavity one is connected to the upper cavity one support rail group through the upper cavity one rail slider group, so that the upper cavity one can move forward and backward along the upper cavity one support rail group; the upper cavity two guide module includes an upper cavity two support rail group and an upper cavity two rail slider group, and the top of the upper cavity two is connected to the upper cavity two support rail group through the upper cavity two rail slider group, so that the upper cavity two can move forward and backward along the upper cavity two support rail group.

[0010] In the above technical solution, it is further preferred that the piston of the upper cavity one cylinder is connected to the upper cavity one through an upper cavity one connecting block, and the piston of the upper cavity two cylinder is connected to the upper cavity two through an upper cavity two connecting block.

[0011] In the above technical solution, preferably, the control system also includes an upper cavity one switching button and an upper cavity two switching button, and the upper cavity one switching button and the upper cavity two switching button are respectively connected to the input end of the PLC module through corresponding button contacts to realize the switching of the upper cavity one and the upper cavity two.

[0012] In the above technical solution, preferably, there is logic protection for the upper cavity one and the upper cavity two in the PLC module during the movement, and there is logic protection for the movement of the lower cavity bottom plate and the switching action of the upper cavity, so that other actions cannot be performed when the action being executed is not completed.

[0013] In the above technical solution, preferably, the base plate driving module includes a Z-axis servo driver and a Z-axis servo motor, and the Z-axis servo driver is respectively connected to the PLC module and the Z-axis servo motor, and the Z-axis servo driver is used to receive instructions from the PLC module and drive the Z-axis servo motor to move the lower cavity base plate up and down.

[0014] In the above technical solution, it is further preferred that the Z-axis descending stop position where the cavity bottom plate descends to the bottom of the lower cavity under the control of the Z-axis servo motor in the PLC module is set with corresponding fixed coordinate parameters to realize the execution of automatic operation actions.

[0015] In the above technical solution, it is further preferred that the PLC module is provided with a movement range output limitation logic of the Z-axis servo motor; the movement range output limitation logic, the specific logic is:

[0016] First, set: X: limit the positive limit position of movement; Y: limit the negative limit position of movement; IN1: the actual position of the Z-axis servo motor; IN2: external input planned movement target position; OUT1: output planned movement distance;

[0017] When the external input planned movement target position IN2 is less than the restricted movement positive limit position X and greater than the restricted movement negative limit position Y, the actual position IN1 of the Z-axis servo motor is moved to the external input planned movement target position IN2; when the external input planned movement target position IN2 is greater than the restricted movement positive limit position X, the actual position IN1 of the Z-axis servo motor is moved to the restricted movement positive limit position X; when the external input planned movement target position IN2 is less than the restricted movement negative limit position Y, the actual position IN1 of the Z-axis servo motor is moved to the restricted movement negative limit position Y.

[0018] In the above technical solution, it is further preferred that the Z-axis servo driver is provided with a soft limit for limiting the moving range of the Z-axis servo motor.

[0019] A control method for a control system capable of automatically switching chambers and automatically sealing, including a control method for switching upper cavity one to upper cavity two and a control method for switching upper cavity two to upper cavity one;

[0020] The specific control method of switching the upper cavity 1 to the upper cavity 2 is as follows:

[0021] S1. Click the upper cavity 2 switch button;

[0022] S2, the Z-axis servo motor drives the bottom plate of the lower chamber to move to the Z-axis descending stop position;

[0023] S3, after the Z axis stops at the descending position for a certain period of time, the electromagnetic valve of the inflatable sealing ring loses power, and the inflatable sealing ring loses air and retracts;

[0024] S4, after the electromagnetic valve of the inflatable sealing ring loses power for a certain period of time, the electromagnetic valve of the upper cavity forward movement loses power, the electromagnetic valve of the upper cavity backward movement gains power, and the cylinder of the upper cavity retracts;

[0025] S5, when the piston of the upper cavity cylinder 1 is retracted to the position detected by the upper cavity cylinder 1 retracted position sensor for a certain period of time, the upper cavity 2 forward solenoid valve is energized, the upper cavity 2 backward solenoid valve is de-energized, and the upper cavity 2 cylinder is extended;

[0026] S6. When the piston of the second cylinder of the upper cavity extends to the position detected by the upper cavity second cylinder extension sensor for a certain period of time, the inflatable sealing ring solenoid valve is energized, and the inflatable sealing ring is inflated;

[0027] The specific control method of switching the upper cavity 2 to the upper cavity 1 is as follows:

[0028] S1. Click the upper cavity switch button;

[0029] S2, the Z-axis servo motor drives the bottom plate of the lower chamber to move to the Z-axis descending stop position;

[0030] S3, after the Z axis stops at the descending position for a certain period of time, the electromagnetic valve of the inflatable sealing ring loses power, and the inflatable sealing ring loses air and retracts;

[0031] S4, after the electromagnetic valve of the inflatable sealing ring loses power for a certain period of time, the second forward moving electromagnetic valve of the upper cavity loses power, the second backward moving electromagnetic valve of the upper cavity gains power, and the second cylinder of the upper cavity retracts;

[0032] S5, when the piston of the second cylinder of the upper cavity is retracted to the position detected by the second cylinder of the upper cavity retracted position sensor for a certain period of time, the first forward solenoid valve of the upper cavity is energized, the first backward solenoid valve of the upper cavity is de-energized, and the first cylinder of the upper cavity is extended;

[0033] S6. When the piston of the upper cavity cylinder extends to the position detected by the upper cavity cylinder extension sensor for a certain period of time, the inflatable sealing ring solenoid valve is energized and the inflatable sealing ring is inflated.

[0034] The advantages and positive effects of the present invention are:

[0035] 1. After installation, the control system of the present invention can quickly replace the upper cavity of the equipment and automatically seal the upper and lower cavities without disassembling the mechanical structure and destroying the air tightness of the structure, greatly reducing the time that the contents of the lower cavity are exposed to the air, reducing surface contamination, and improving product quality.

[0036] 2. The control system of the present invention uses button control, which is simple to operate and can be used safely with simple training. It does not require other complex processes, which reduces the user's learning cost and facilitates user operation. It realizes the simple switching processing of the contents of the same lower cavity by replacing the upper cavity with different functions, reducing the labor intensity and labor costs of workers.

[0037] 3. In the control system of the present invention, the position of the cylinder is fed back by the sensor, and can be fed back to the PLC module in time to control the cylinder to perform corresponding actions to ensure that the cavity is in place and has good sealing performance.

[0038] 4. In the PLC module of the present invention, the upper cavity one and the upper cavity two are logically protected during the movement process, so that other actions cannot be performed when the action being executed is not completed; the movement action of the lower cavity bottom plate and the upper cavity switching action are logically protected, which avoids the physical interference between the contents of the lower cavity and the upper cavity caused by the rise of the lower cavity bottom plate when the upper cavity moves, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of an upper cavity 1, an upper cavity 2 and a lower cavity provided in an embodiment of the present invention;

[0040] Figure 2 is a structural schematic diagram of a lower cavity and a bottom plate driving module provided by an embodiment of the present invention;

[0041] Figure 3 is a schematic diagram of the electrical structure of a control system provided by an embodiment of the present invention;

[0042] Figure 4 It is a flow chart of a control method for switching the upper cavity 1 to the upper cavity 2 provided by an embodiment of the present invention;

[0043] Figure 5 It is a flow chart of a control method for switching the upper cavity 2 to the upper cavity 1 provided in an embodiment of the present invention.

[0044] In the figure: A, PLC module; B, Z-axis servo driver; C, Z-axis servo motor; D, upper cavity 1; E, upper cavity 2; F, lower cavity;

[0045] 1. Switch button for upper cavity 1; 2. Switch button for upper cavity 2; 3. Upper cavity 1 cylinder extended position sensor; 4. Upper cavity 1 cylinder retracted position sensor; 5. Upper cavity 2 cylinder extended position sensor; 6. Upper cavity 2 cylinder retracted position sensor; 7. 24V DC power supply; 8. PLC power interface; 9. PLC input signal interface; 10. PLC output signal interface; 11. PLC communication interface; 12. Z-axis servo drive main power interface; 13. Z-axis servo drive control power interface; 14. Z-axis servo drive communication interface; 15. Z-axis servo drive motor single cable interface; 16. Z-axis servo motor single cable interface; 17. Upper cavity 1 rearward solenoid valve; 18. Upper cavity 1 forward solenoid valve; 19. Upper cavity 2 rearward solenoid valve; 20. Upper cavity Body two forward solenoid valve; 21, inflatable sealing ring solenoid valve; 22, upper cavity one cylinder; 23, upper cavity two cylinder; 24, inflatable sealing ring; 25, lower cavity bottom plate; 26, upper cavity one support track one; 27, upper cavity one support track two; 28, upper cavity one track slider one; 29, upper cavity one track slider two; 30, upper cavity one track slider three; 31, upper cavity one track slider four; 32, upper cavity two support track one; 33, upper cavity two support track two; 34, upper cavity two track slider one; 35, upper cavity two track slider two; 36, upper cavity two track slider three; 37, upper cavity two track slider four; 38, upper cavity one connecting block; 39, upper cavity two connecting block; 40, base platform; 41, lead screw; 42, belt; 43, nut; 44, support frame. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific implementation cases described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] First of all, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] See also Figure 1 to Figure 3The embodiment of the present invention provides a control system that can automatically switch cabins and automatically seal, including an upper cavity D, an upper cavity E, a lower cavity F, an upper cavity support rail group, an upper cavity track slider group, an upper cavity support rail group, an upper cavity track slider group, an upper cavity connection block 38, an upper cavity connection block 39, an upper cavity cylinder 22, an upper cavity cylinder 23, an inflatable sealing ring 24, a lower cavity bottom plate 25, a Z-axis servo motor C, a PLC module A, Z-axis servo driver B, 24V DC power supply 7, upper cavity one switching button 1, upper cavity two switching button 2, upper cavity one cylinder extended into position sensor 3, upper cavity one cylinder retracted into position sensor 4, upper cavity two cylinder extended into position sensor 5, upper cavity two cylinder retracted into position sensor 6, upper cavity one rearward movement solenoid valve 17, upper cavity one forward movement solenoid valve 18, upper cavity two rearward movement solenoid valve 19, upper cavity two forward movement solenoid valve 20, inflatable sealing ring solenoid valve 21.

[0049] The upper cavity D and the upper cavity E are located above the lower cavity F; the bottom of the upper cavity D is connected to the upper cavity support rail group (upper cavity support rail 26, upper cavity support rail 27) through an upper cavity track slider group (including an upper cavity track slider 28, an upper cavity track slider 29, an upper cavity track slider 30, and an upper cavity track slider 4 31), and the piston of the upper cavity cylinder 22 is connected to the upper cavity D through an upper cavity connecting block 38, so that when the piston of the upper cavity cylinder 22 is extended or retracted, the upper cavity D can be driven to move along the upper cavity support rail group, thereby realizing the connection between the upper cavity D and the upper cavity. Alignment or separation of the lower cavity F; the top of the upper cavity E is connected to the upper cavity support rail group (upper cavity support rail one 32, upper cavity support rail two 33) through the upper cavity track slider group (including upper cavity track slider one 34, upper cavity track slider two 35, upper cavity track slider three 36, upper cavity track slider four 37), and the piston of the upper cavity cylinder 23 is connected to the upper cavity E through the upper cavity connecting block 39, so that when the piston of the upper cavity cylinder 23 is extended or retracted, it can drive the upper cavity E to move along the upper cavity support rail group, thereby realizing the alignment or separation of the upper cavity E and the lower cavity F.

[0050] The PLC module A includes a PLC power interface 8 , a PLC communication interface 11 , a PLC input signal interface 9 and a PLC output signal interface 10 .

[0051] The upper cavity one switching button 1 and the upper cavity two switching button 2 are respectively connected to the PLC input signal interface 9 through the corresponding button contacts. The pressing or releasing action of each button will be converted into an electrical signal and enter the PLC input signal interface 9 to realize the switching between the upper cavity one D and the upper cavity two E. The upper cavity one cylinder extended position sensor 3 and the upper cavity one cylinder retracted position sensor 4 are respectively used to detect the extension and retraction of the upper cavity one cylinder 22. The upper cavity two cylinder extended position sensor 5 and the upper cavity two cylinder retracted position sensor 6 are respectively used to detect the extension and retraction of the upper cavity two cylinder 23. The upper cavity one cylinder extended position sensor 3, the upper cavity one cylinder retracted position sensor 4, the upper cavity two cylinder extended position sensor 5, and the upper cavity two cylinder retracted position sensor 6 are respectively connected to the PLC input signal interface 9. Used to convert the detected corresponding cylinder piston position into an electrical signal and enter the PLC input signal interface 9; the PLC output signal interface 10 is connected to the upper cavity one cylinder 22 through the upper cavity one forward solenoid valve 18 and the upper cavity one backward solenoid valve 17, and the PLC output signal interface 10 is connected to the upper cavity two cylinders 23 through the upper cavity two forward solenoid valve 20 and the upper cavity two backward solenoid valve 19, and is processed by the PLC module A, and outputs current under specific circumstances to control the forward and backward movement of the cylinder of the corresponding cavity through the corresponding solenoid valve.

[0052] The inflatable sealing ring 24 is installed on the top of the lower cavity F, and the PLC output signal interface 10 is connected to the inflatable sealing ring 24 through the inflatable sealing ring solenoid valve 21 to control the inflatable sealing ring 24 to inflate and deflate, thereby achieving sealing between the lower cavity F and the upper cavity.

[0053] The Z-axis servo driver B includes a Z-axis servo driver main power interface 12, a Z-axis servo driver control power interface 13, a Z-axis servo driver communication interface 14 and a Z-axis servo driver motor single cable interface 15; the Z-axis servo motor C is provided with a Z-axis servo motor single cable interface 16. The PLC communication interface 11 is connected to the Z-axis servo driver communication interface 14 to realize data exchange between the PLC module A and the Z-axis servo driver B; the Z-axis servo driver motor single cable interface 15 is connected to the Z-axis servo motor single cable interface 16.

[0054] The lower cavity bottom plate 25 is driven to move up and down by the Z-axis servo motor C. Specifically, the Z-axis servo motor C is connected to the screw 41 through a belt 42, driving the screw 41 to rotate. The screw 41 is threadedly connected to the nut 43. The nut 43 is installed on the support frame 44. The top of the screw 41 is connected to the base platform 40 through a bearing. The lower cavity bottom plate 25 is installed on the top of the base platform 40. When the Z-axis servo motor C is controlled to rotate, the screw 41 rotates around the nut 43 and rises and falls. The screw 41 drives the base platform 40 and the lower cavity bottom plate 25 to move up and down.

[0055] The Z-axis servo driver main power interface 12 and the 24V DC power supply 7 are both connected to a 220V AC power supply; the upper cavity one switching button 1, the upper cavity two switching button 2, the upper cavity one cylinder extended into position sensor 3, the upper cavity one cylinder retracted into position sensor 4, the upper cavity two cylinder extended into position sensor 5, the upper cavity two cylinder retracted into position sensor 6, the PLC power interface 8, and the Z-axis servo driver control power interface 13 are all powered by the 24V DC power supply 7.

[0056] There is logic protection between the upper cavity 1 D and the upper cavity 2 E in the PLC module A during movement, and there is logic protection between the movement of the lower cavity bottom plate 25 and the switching action of the upper cavity, so that other actions cannot be performed when the action being executed is not completed.

[0057] In the PLC module A, the Z-axis descending stop position where the cavity bottom plate 25 descends to the bottom of the lower cavity F under the control of the Z-axis servo motor C is set with corresponding fixed coordinate parameters to realize the execution of automatic operation actions.

[0058] The PLC module A is provided with the moving range output limiting logic of the Z-axis servo motor C to ensure that the Z-axis servo motor C rotates within its movable range. The moving range output limiting logic has the following specific logic:

[0059] First, set: X: limit the positive limit position of movement; Y: limit the negative limit position of movement; IN1: the actual position of the Z-axis servo motor C; IN2: external input planned movement target position; OUT1: output planned movement distance;

[0060] When the external input planned movement destination position IN2 is less than the restricted movement positive limit position X and greater than the restricted movement negative limit position Y, the actual position IN1 of the Z-axis servo motor C is moved to the external input planned movement destination position IN2; when the external input planned movement destination position IN2 is greater than the restricted movement positive limit position X, the actual position IN1 of the Z-axis servo motor C is moved to the restricted movement positive limit position X; when the external input planned movement destination position IN2 is less than the restricted movement negative limit position Y, the actual position IN1 of the Z-axis servo motor C is moved to the restricted movement negative limit position Y.

[0061] The Z-axis servo driver B is provided with a soft limiter to limit the moving range of the Z-axis servo motor C, which greatly avoids problems such as mechanical collision.

[0062] The PLC module A receives the upper cavity switching signal, the inflatable sealing ring 24 automatically retracts, removes the sealing state, and automatically switches the upper cavity D and the upper cavity E. When the upper cavity is aligned with the lower cavity F, the inflatable sealing ring 24 automatically seals to ensure that the upper and lower cavities are in a sealed state, which is convenient for the next step to process the contents of the lower cavity F.

[0063] This control system is used to replace the chamber, which is convenient for equipment operators to use and easy to accept. The movement of the upper chamber and the Z-axis servo motor C is controlled by PLC module A, and the logical interlock of positioning movement is added to improve the safety of use; the movement range of the PLC module A program is limited to avoid mechanical collision problems; there are only two buttons on the control panel, which reduces the user's learning cost and facilitates user operation, and realizes the simple switching of the contents of the same lower chamber by replacing the upper chamber with different functions.

[0064] The specific control process of the present invention is as follows:

[0065] like Figure 4 As shown, the specific control method of switching the upper cavity D to the upper cavity E is as follows:

[0066] S1. Click the upper cavity 2 switch button 2;

[0067] S2, the Z-axis servo motor C drives the lower cavity bottom plate 25 to move to the Z-axis descending stop position;

[0068] S3, 2 seconds after the Z-axis stops descending, the electromagnetic valve 21 of the inflatable sealing ring loses power, and the inflatable sealing ring 24 loses air and retracts;

[0069] S4, 2 seconds after the inflatable sealing ring electromagnetic valve 21 loses power, the upper cavity forward electromagnetic valve 18 loses power, the upper cavity backward electromagnetic valve 17 gains power, and the upper cavity cylinder 22 retracts;

[0070] S5, when the piston of the upper cavity one cylinder 22 retracts to the detection position of the upper cavity one cylinder retracting sensor 4 for 2 seconds, the upper cavity two forward solenoid valve 20 is energized, the upper cavity two backward solenoid valve 19 is de-energized, and the upper cavity two cylinder 23 extends;

[0071] S6. When the piston of the second cylinder 23 of the upper cavity extends to the detection position of the second cylinder of the upper cavity 5 for 2 seconds, the inflatable sealing ring solenoid valve 21 is energized and the inflatable sealing ring 24 is inflated.

[0072] At this point, the switching and sealing action of the upper cavity 1 D to the upper cavity 2 E is completed.

[0073] like Figure 5 As shown, the specific control method of switching the upper cavity E to the upper cavity D is as follows:

[0074] S1. Click the upper cavity switch button 1;

[0075] S2, the Z-axis servo motor C drives the lower cavity bottom plate 25 to move to the Z-axis descending stop position;

[0076] S3, 2 seconds after the Z-axis stops descending, the electromagnetic valve 21 of the inflatable sealing ring loses power, and the inflatable sealing ring 24 loses air and retracts;

[0077] S4, 2 seconds after the inflatable sealing ring electromagnetic valve 21 loses power, the second forward electromagnetic valve 20 of the upper cavity loses power, the second backward electromagnetic valve 19 of the upper cavity gains power, and the second cylinder 23 of the upper cavity retracts;

[0078] S5, when the piston of the second cylinder 23 of the upper cavity is retracted to the detection position of the second cylinder retracted in position sensor 6 for 2 seconds, the first forward solenoid valve 18 of the upper cavity is energized, the first backward solenoid valve 17 of the upper cavity is de-energized, and the first cylinder 22 of the upper cavity is extended;

[0079] S6. When the piston of the upper cavity cylinder 22 extends to the detection position of the upper cavity cylinder extension position sensor 3 for 2 seconds, the inflation seal ring solenoid valve 21 is energized and the inflation seal ring 24 is inflated.

[0080] At this point, the switching and sealing action of the upper cavity 2 E to the upper cavity 1 D is completed.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control system capable of automatically switching cabins and automatically sealing, comprising a lower cavity and an upper cavity, wherein the upper cavity is located above the lower cavity; characterized in that: The upper cavity includes an upper cavity one and an upper cavity two, and the control system also includes an upper cavity one driving module, an upper cavity two driving module and a PLC module; the upper cavity one is driven by the upper cavity one driving module to move between the upper cavity sealing position and the upper cavity one initial position, so as to realize the alignment or separation of the upper cavity one with the lower cavity; the upper cavity two is driven by the upper cavity two driving module to move between the upper cavity sealing position and the upper cavity two initial position, so as to realize the alignment or separation of the upper cavity two with the lower cavity; the upper cavity one driving module and the upper cavity two driving module are both controlled by the PLC module to perform corresponding actions and realize automatic switching between the upper cavity one and the upper cavity two; An inflatable sealing ring is installed on the top of the lower cavity, and the inflatable sealing ring is connected to the PLC module through an inflatable sealing ring solenoid valve, and the sealing between the lower cavity and the upper cavity is achieved through the control of the PLC module; a lower cavity bottom plate is installed in the lower cavity, and the lower cavity bottom plate is driven by the bottom plate driving module to move up and down; the bottom plate driving module is controlled by the PLC module to perform corresponding actions; The bottom plate driving module includes a Z-axis servo driver and a Z-axis servo motor, wherein the Z-axis servo driver is connected to the PLC module and the Z-axis servo motor respectively, and the Z-axis servo driver is used to receive instructions from the PLC module and drive the Z-axis servo motor to move the bottom plate of the lower cavity up and down; The PLC module is provided with a movement range output limitation logic of the Z-axis servo motor; the movement range output limitation logic, the specific logic is: First, set: X: limit the positive limit position of movement; Y: limit the negative limit position of movement; IN1: the actual position of the Z-axis servo motor; IN2: external input planned movement target position; OUT1: output planned movement distance; When the external input planned movement target position IN2 is less than the restricted movement positive limit position X and greater than the restricted movement negative limit position Y, the actual position IN1 of the Z-axis servo motor is moved to the external input planned movement target position IN2; when the external input planned movement target position IN2 is greater than the restricted movement positive limit position X, the actual position IN1 of the Z-axis servo motor is moved to the restricted movement positive limit position X; when the external input planned movement target position IN2 is less than the restricted movement negative limit position Y, the actual position IN1 of the Z-axis servo motor is moved to the restricted movement negative limit position Y.

2. The control system capable of automatically switching cabins and automatically sealing according to claim 1, characterized in that: The upper cavity one driving module includes an upper cavity one cylinder, an upper cavity one forward solenoid valve and an upper cavity one backward solenoid valve. The output end of the PLC module is connected to the upper cavity one cylinder through the upper cavity one forward solenoid valve and the upper cavity one backward solenoid valve respectively. The upper cavity one cylinder is used to drive the upper cavity one to move along the upper cavity one guide module; the upper cavity two driving module includes an upper cavity two cylinder, an upper cavity two forward solenoid valve and an upper cavity two backward solenoid valve. The output end of the PLC module is connected to the upper cavity two cylinders through the upper cavity two forward solenoid valve and the upper cavity two backward solenoid valve respectively. The upper cavity two cylinders are used to drive the upper cavity two to move along the upper cavity two guide modules; the upper cavity one guide module and the upper cavity two guide modules are vertically distributed above and below the upper cavity.

3. The control system capable of automatically switching cabins and automatically sealing according to claim 2, characterized in that: The head and tail parts of the upper cavity one cylinder are provided with an upper cavity one cylinder extended into position sensor and an upper cavity one cylinder retracted into position sensor, and the head and tail parts of the upper cavity two cylinder are provided with an upper cavity two cylinder extended into position sensor and an upper cavity two cylinder retracted into position sensor. The upper cavity one cylinder extended into position sensor, the upper cavity one cylinder retracted into position sensor, the upper cavity two cylinder extended into position sensor, and the upper cavity two cylinder retracted into position sensor are respectively connected to the input end of the PLC module; the upper cavity one cylinder extended into position sensor and the upper cavity one cylinder retracted into position sensor are respectively used to detect the extension and retraction of the upper cavity one cylinder, and feed back to the PLC module; the upper cavity two cylinder extended into position sensor and the upper cavity two cylinder retracted into position sensor are respectively used to detect the extension and retraction of the upper cavity two cylinders, and feed back to the PLC module.

4. The control system capable of automatically switching cabins and automatically sealing according to claim 1, characterized in that: The control system also includes an upper cavity one switching button and an upper cavity two switching button, and the upper cavity one switching button and the upper cavity two switching button are respectively connected to the input end of the PLC module through corresponding button contacts to realize the switching between the upper cavity one and the upper cavity two.

5. The control system capable of automatically switching cabins and automatically sealing according to claim 1, characterized in that: There is logic protection between the upper cavity one and the upper cavity two in the PLC module during the movement process, and there is logic protection between the movement of the lower cavity bottom plate and the upper cavity switching action, so that other actions cannot be performed when the action being executed is not completed.

6. The control system capable of automatically switching cabins and automatically sealing according to claim 1, characterized in that: In the PLC module, the Z-axis descending stop position where the cavity bottom plate descends to the bottom of the lower cavity under the control of the Z-axis servo motor is set with corresponding fixed coordinate parameters to realize the execution of automatic operation actions.

7. The control system capable of automatically switching cabins and automatically sealing according to claim 1, characterized in that: The Z-axis servo driver is provided with a soft limit for limiting the moving range of the Z-axis servo motor.

8. A control method for the control system capable of automatically switching cabins and automatically sealing according to any one of claims 1 to 7, characterized in that: Including a control method for switching the upper cavity one to the upper cavity two and a control method for switching the upper cavity two to the upper cavity one; The specific control method of switching the upper cavity 1 to the upper cavity 2 is as follows: S1. Click the upper cavity 2 switch button; S2, the Z-axis servo motor drives the bottom plate of the lower chamber to move to the Z-axis descending stop position; S3, after the Z axis stops at the descending position for a certain period of time, the electromagnetic valve of the inflatable sealing ring loses power, and the inflatable sealing ring loses air and retracts; S4, after the electromagnetic valve of the inflatable sealing ring loses power for a certain period of time, the electromagnetic valve of the upper cavity forward movement loses power, the electromagnetic valve of the upper cavity backward movement gains power, and the cylinder of the upper cavity retracts; S5, when the piston of the upper cavity cylinder 1 is retracted to the position detected by the upper cavity cylinder 1 retracted position sensor for a certain period of time, the upper cavity 2 forward solenoid valve is energized, the upper cavity 2 backward solenoid valve is de-energized, and the upper cavity 2 cylinder is extended; S6. When the piston of the second cylinder of the upper cavity extends to the position detected by the upper cavity second cylinder extension sensor for a certain period of time, the inflatable sealing ring solenoid valve is energized, and the inflatable sealing ring is inflated; The specific control method of switching the upper cavity 2 to the upper cavity 1 is as follows: S1. Click the upper cavity switch button; S2, the Z-axis servo motor drives the bottom plate of the lower chamber to move to the Z-axis descending stop position; S3, after the Z axis stops at the descending position for a certain period of time, the electromagnetic valve of the inflatable sealing ring loses power, and the inflatable sealing ring loses air and retracts; S4, after the electromagnetic valve of the inflatable sealing ring loses power for a certain period of time, the second forward moving electromagnetic valve of the upper cavity loses power, the second backward moving electromagnetic valve of the upper cavity gains power, and the second cylinder of the upper cavity retracts; S5, when the piston of the second cylinder of the upper cavity is retracted to the position detected by the second cylinder of the upper cavity retracted position sensor for a certain period of time, the first forward solenoid valve of the upper cavity is energized, the first backward solenoid valve of the upper cavity is de-energized, and the first cylinder of the upper cavity is extended; S6. When the piston of the upper cavity cylinder extends to the position detected by the upper cavity cylinder extension sensor for a certain period of time, the inflatable sealing ring solenoid valve is energized and the inflatable sealing ring is inflated.

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