A screw feeding mechanism based on cylinder suction cup nozzle and its working method

Abstract

The invention discloses a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof, comprising: a screw feeder, the screw feeder is provided with a discharge port; a cylinder with a guide rod, the cylinder with a guide rod is arranged at one end of the screw feeder; a rotary cylinder, the rotary cylinder is drivingly connected to the movable end of the cylinder with a guide rod; a receiving block, the receiving block is arranged at one side of the rotary cylinder, and the receiving block is provided with a receiving port; a moving block, the moving block is drivingly connected to the movable end of the rotary cylinder, and both ends of the moving block are provided with profiling holes, the two profiling holes are respectively opposite to the discharge port and the receiving port, and the two profiling holes form a sealed cavity with the discharge port and the receiving port; a vacuum generator, the vacuum generator is arranged below the screw feeder, and the vacuum generator is connected to the two profiling holes through a first air pipe. The screw feeding mechanism of the invention is easy to manage, saves time, speeds up the beat, and improves efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of screw feeding equipment, and in particular to a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof. Background Art

[0002] The screw feeder solves the problem of screw feeding very well. Combined with the three-axis platform and automatic screwdriver, it can realize the automated operation of tightening screws.

[0003] However, the installation of the screw feeder requires a large space, and the screws can only be shaped, arranged and transported to the outlet of the screw feeder. In addition, the three-axis platform is required to drive the automatic screwdriver to move a long distance to take the screws and then return to the workpiece to tighten the screws. This process consumes a lot of time and affects assembly efficiency. Summary of the invention

[0004] In view of the above-mentioned problems that the existing screw feeding mechanism occupies a large space, has a long conveying distance and affects the assembly efficiency, the present invention aims to provide a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof. The screw feeding mechanism is not limited by the installation space and can convey a long distance, thereby realizing centralized installation of the screw feeding mechanism, facilitating management, saving time, speeding up the cycle and improving efficiency.

[0005] The specific technical solutions are as follows:

[0006] A screw feeding mechanism based on a cylinder suction cup nozzle, comprising:

[0007] A screw feeder, wherein the screw feeder is provided with a discharge port;

[0008] A cylinder with a guide rod, wherein the cylinder with a guide rod is arranged at one end of the screw feeder;

[0009] A rotary cylinder, the rotary cylinder is drivingly connected to the movable end of the cylinder with a guide rod, and the cylinder with a guide rod is used to drive the rotary cylinder to move up and down;

[0010] A material receiving block, which is arranged on one side of the rotary cylinder and has a material receiving port;

[0011] A material moving block, the moving block is drivingly connected to the movable end of the rotary cylinder, the rotary cylinder is used to drive the moving block to rotate, both ends of the moving block are provided with profiling holes, the two profiling holes are respectively opposite to the material discharge port and the material receiving port, and the two profiling holes respectively form a sealed cavity with the material discharge port and the material receiving port;

[0012] A vacuum generator is arranged below the screw feeder and is connected to the two contour holes through a first air pipe.

[0013] The above-mentioned screw feeding mechanism based on the cylinder suction cup nozzle, wherein, also includes:

[0014] Two first solenoid valves, both of which are two-position two-way solenoid valves, and the two first solenoid valves are respectively connected to the vacuum generator and the two contoured holes;

[0015] Two second solenoid valves, both of which are three-position five-way solenoid valves, one of which is used to drive the guide rod cylinder to rise or fall, and the other of which is used to drive the rotary cylinder to rotate;

[0016] Two one-way valves are respectively connected to the vacuum generator and the two contoured holes.

[0017] The above-mentioned screw feeding mechanism based on cylinder suction cup nozzle, among which, also includes: a base plate, the screw feeder is arranged on one end of the base plate, and the cylinder with guide rod is arranged on the other end of the base plate; an adapter plate, the adapter plate is fixedly connected to the movable end of the cylinder with guide rod, and the rotary cylinder is fixedly connected to the adapter plate; two support plates, the two support plates are respectively arranged at the bottom of both sides of the base plate.

[0018] In the above-mentioned screw feeding mechanism based on cylinder suction cup nozzle, the two first solenoid valves, the two second solenoid valves and the two one-way valves are all arranged at the bottom of the base plate.

[0019] The above-mentioned screw feeding mechanism based on cylinder suction cup nozzle, wherein both sides of the screw feeder are fixedly connected to one end of the base plate through a mounting plate.

[0020] The above-mentioned screw feeding mechanism based on the cylinder suction cup nozzle, among others, also includes: an electrical connection plug, a one-to-two first air pipe joint, and a one-to-four first air pipe joint, wherein the electrical connection plug, the one-to-two first air pipe joint, and the one-to-four first air pipe joint are all arranged at the bottom of the base plate.

[0021] The above-mentioned screw feeding mechanism based on cylinder suction cup nozzle, wherein, both ends of the material moving block are provided with threaded holes, the two threaded holes are respectively connected with the two contoured holes, the two threaded holes are respectively located at the two ends of the top of the material moving block, the two contoured holes are respectively located at the two ends of the bottom of the material moving block, and the two threaded holes are respectively connected with the two first air pipes through quick-plug connectors.

[0022] The above-mentioned screw feeding mechanism based on the cylinder suction cup nozzle, wherein a second air pipe is provided at the bottom of the receiving block, and the second air pipe is fixedly connected to the receiving port through an air pipe locking nut.

[0023] The above-mentioned screw feeding mechanism based on cylinder suction cup nozzle, wherein a support seat is provided on the bottom plate, the material receiving block is provided on the support seat, and the upper surface of the material receiving block is flush with the upper surface of the screw feeder located at the discharge port.

[0024] A working method of a screw feeding mechanism based on a cylinder suction cup nozzle, wherein the working method comprises any one of the screw feeding mechanisms based on a cylinder suction cup nozzle described above, and the working method comprises:

[0025] Step S1: the left coil of the second solenoid valve is energized to drive the guide rod cylinder to rise, and the coils of the two first solenoid valves and the two one-way valves are deenergized to achieve the reset of the screw feeding mechanism;

[0026] Step S2: the right coil of the second solenoid valve is energized to drive the guide rod cylinder to descend, at which time, one of the profiling holes is located above the discharge port, the one of the profiling holes covers the screw sent out of the discharge port, and the sealing cavity is formed between the one of the profiling holes and the discharge port, and the other of the profiling holes is located above the receiving port, and the sealing cavity is formed between the other of the profiling holes and the receiving port;

[0027] Step S3: the coil of the one-way valve is energized to control the vacuum generator to introduce vacuum into the one of the contoured holes, so that the screw in the discharge port is sucked into the one of the contoured holes;

[0028] Step S4: the left coil of the second solenoid valve is energized to drive the guide rod cylinder to rise, and the right coil of the other second solenoid valve is energized to drive the rotary cylinder to rotate until the other profiling hole is directly opposite to the discharge port and the profiling hole is directly opposite to the receiving port;

[0029] Step S5: the right coil of the second solenoid valve is energized to drive the guide rod cylinder to descend, at which time the other profiling hole is located above the discharge port, the other profiling hole covers the screw sent out of the discharge port, and the sealed cavity is formed between the other profiling hole and the discharge port, and the profiling hole is located above the receiving port, and the sealed cavity is formed between the profiling hole and the receiving port;

[0030] Step S6: the coil of the other one-way valve is energized to control the vacuum generator to introduce vacuum into the other one-shaped hole, so that the screw in the discharge port is sucked into the other one-shaped hole. At the same time, the coil of the one-way valve is de-energized, and the first solenoid valve is energized and then de-energized, and the vacuum generator is controlled to introduce high-pressure air into the one-shaped hole, so that the screw in the one-shaped hole is blown into the receiving port and transported to the designated position.

[0031] Step S7: the left coil of the second solenoid valve is energized to drive the guide rod cylinder to rise, and the left coil of the other second solenoid valve is energized to drive the rotary cylinder to rotate until the first profiling hole is directly opposite to the discharge port, and the other profiling hole is directly opposite to the receiving port;

[0032] Step S8: the right coil of the second solenoid valve is energized to drive the guide rod cylinder to descend, at which time, the profiling hole is located above the discharge port, the profiling hole covers the screw sent out of the discharge port, and the sealing cavity is formed between the profiling hole and the discharge port, and the other profiling hole is located above the receiving port, and the sealing cavity is formed between the other profiling hole and the receiving port;

[0033] Step S9: the coil of the one-way valve is energized to control the vacuum generator to introduce vacuum into the one profiling hole, so that the screw in the discharge port is sucked into the one profiling hole. At the same time, the coil of the other one-way valve is de-energized, and the other first solenoid valve is energized and then de-energized, and the vacuum generator is controlled to introduce high-pressure air into the other profiling hole, so that the screw in the other profiling hole is blown into the receiving port and transported to the designated position.

[0034] Step S10: Repeat steps S4 to S9 until the operation of the screw feeding mechanism is completed.

[0035] Compared with the prior art, the above technical solution has the following positive effects:

[0036] (1) The screw feeding mechanism of the present invention is not limited by the installation space and can be installed at a designated location as needed. It does not need to be installed on the work surface or within the travel range of the three-axis platform and the automatic screwdriver. It can be installed in the corner of the table or under the table, which is convenient for the design of other mechanisms and for workers to add screws.

[0037] (2) The screws of the present invention are fed by the second air pipe, which can be transported over a long distance, and the screw feeding mechanism can be centrally installed, which is easy to manage.

[0038] (3) The screws of the present invention are directly transported to a designated position, such as an automatic screwdriver, without the need for a three-axis platform and an automatic screwdriver to move and retrieve the material, thus saving a large amount of time, speeding up the cycle, and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof of the present invention;

[0040] Figure 2It is a schematic diagram of the overall structure of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof of the present invention;

[0041] Figure 3 A cross-sectional view of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof according to the present invention;

[0042] Figure 4 It is a pneumatic principle diagram of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof of the present invention;

[0043] In the attached drawings: 1. Screw feeder; 2. Cylinder with guide rod; 3. Rotary cylinder; 4. Material receiving block; 5. Material shifting block; 6. Vacuum generator; 7. Discharge port; 8. Material receiving port; 9. Profile hole; 10. One-way valve; 11. First solenoid valve; 12. Second solenoid valve; 13. Bottom plate; 14. Adapter plate; 15. Support plate; 16. Mounting plate; 17. Electrical connection plug; 18. One-to-two first air pipe joint; 19. One-to-four first air pipe joint; 20. Quick connector; 21. Second air pipe; 22. Air pipe locking nut; 23. Support seat; 24. Third solenoid valve; 25. Fourth solenoid valve; 26. Fifth solenoid valve; 27. Sixth solenoid valve; 28. First one-way valve; 29. ​​Second one-way valve. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0045] Figure 1 The overall structural diagram of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof of the present invention is shown in FIG. Figure 2 The overall structural diagram of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof of the present invention is shown in FIG. Figure 3 This is a cross-sectional view of a screw feeding mechanism based on a cylinder suction cup nozzle and a working method thereof according to the present invention. Figure 4 The pneumatic principle diagram of a screw feeding mechanism based on a cylinder suction cup nozzle and its working method of the present invention is as follows: Figures 1 to 4As shown, a screw feeding mechanism based on a cylinder suction cup nozzle of a preferred embodiment is shown, comprising: a screw feeder 1, a cylinder with a guide rod 2, a rotary cylinder 3, a receiving block 4, a material moving block 5 and a vacuum generator 6, the screw feeder 1 is provided with a discharge port 7, the cylinder with a guide rod 2 is arranged at one end of the screw feeder 1, the rotary cylinder 3 is transmission-connected with the movable end of the cylinder with a guide rod 2, the cylinder with a guide rod 2 is used to drive the rotary cylinder 3 to move up and down, the receiving block 4 is arranged at the rotary cylinder 2, and the rotating cylinder 3 is connected to the movable end of the cylinder with a guide rod 2. On one side of the cylinder 3, a receiving port 8 is provided on the receiving block 4, the moving block 5 is transmission-connected to the movable end of the rotary cylinder 3, the rotary cylinder 3 is used to drive the moving block 5 to rotate, and both ends of the moving block 5 are provided with profiling holes 9, the two profiling holes 9 are respectively opposite to the discharge port 7 and the receiving port 8, and the two profiling holes 9 respectively form a sealed cavity with the discharge port 7 and the receiving port 8, the vacuum generator 6 is arranged below the screw feeder 1, and the vacuum generator 6 is respectively connected to the two profiling holes 9 through the first air pipe.

[0046] Furthermore, as a preferred embodiment, the screw feeding mechanism based on the cylinder suction cup nozzle also includes: two first solenoid valves 11, two second solenoid valves 12 and two one-way valves 10, the two first solenoid valves 11 are both two-position two-way solenoid valves, the two first solenoid valves 11 are respectively connected to the vacuum generator 6 and the two contour holes 9, the two second solenoid valves 12 are both three-position five-way solenoid valves, one second solenoid valve 12 is used to raise or lower the cylinder 2 with a guide rod, the other second solenoid valve 12 is used to drive the rotary cylinder 3 to rotate, and the two one-way valves 10 are respectively connected to the vacuum generator 6 and the two contour holes 9.

[0047] Furthermore, as a preferred embodiment, the screw feeding mechanism based on the cylinder suction cup nozzle also includes: a base plate 13, an adapter plate 14 and two support plates 15, the screw feeder 1 is arranged on one end of the base plate 13, the cylinder with guide rod 2 is arranged on the other end of the base plate 13, the adapter plate 14 is fixedly connected to the movable end of the cylinder with guide rod 2, the rotary cylinder 3 is fixedly connected to the adapter plate 14, and the two support plates 15 are respectively arranged at the bottom of both sides of the base plate 13.

[0048] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0049] The present invention also has the following implementation modes based on the above:

[0050] In further embodiments of the present invention, please continue to refer to Figures 1 to 4 As shown, the two first solenoid valves 11 , the two second solenoid valves 12 and the two one-way valves 10 are all arranged at the bottom of the bottom plate 13 .

[0051] In a further embodiment of the present invention, two sides of the screw feeder 1 are fixedly connected to one end of the bottom plate 13 via a mounting plate 16 .

[0052] In a further embodiment of the present invention, the screw feeding mechanism based on the cylinder suction cup nozzle also includes: an electrical connection plug 17, a one-to-two first air pipe joint 18, and a one-to-four first air pipe joint 19. The electrical connection plug 17, the one-to-two first air pipe joint 18, and the one-to-four first air pipe joint 19 are all arranged at the bottom of the base plate 13.

[0053] In a further embodiment of the present invention, threaded holes are provided at both ends of the material moving block 5, and the two threaded holes are respectively connected to the two contour holes 9, the two threaded holes are respectively located at the two ends of the top of the material moving block 5, and the two contour holes 9 are respectively located at the two ends of the bottom of the material moving block 5, and the two threaded holes are respectively connected to the two first air pipes through quick-plug connectors 20.

[0054] In a further embodiment of the present invention, a second air pipe 21 is provided at the bottom of the material receiving block 4 , and the second air pipe 21 is fixedly connected to the material receiving port 8 via an air pipe locking nut 22 .

[0055] In a further embodiment of the present invention, a support seat 23 is provided on the bottom plate 13 , and the receiving block 4 is provided on the support seat 23 . The upper surface of the receiving block 4 is flush with the upper surface of the screw feeder 1 at the discharge port 8 .

[0056] The working method of the present invention is described below:

[0057] Step S1: The left coil of the second solenoid valve 12 is energized, the cylinder 2 with the guide rod rises, and the coils of the two first solenoid valves 11 and the two check valves 10 are de-energized, so that the screw feeding mechanism is reset;

[0058] Step S2: The right coil of the second solenoid valve 12 is energized, and the cylinder 2 with the guide rod descends. At this time, a profiling hole 9 is located above the discharge port 7, and the profiling hole 9 covers the screw sent out of the discharge port 7, and a sealed cavity is formed between the profiling hole 9 and the discharge port 7. Another profiling hole 9 is located above the receiving port 8, and a sealed cavity is formed between the other profiling hole 9 and the receiving port 8.

[0059] Step S3: the coil of a one-way valve 10 is energized to control the vacuum generator 6 to pass a vacuum into the one contour hole 9, and the screw in the discharge port 7 is sucked into the one contour hole 9;

[0060] Step S4: The left coil of the second solenoid valve 12 is energized, the cylinder 2 with the guide rod rises, and the right coil of the other second solenoid valve 12 is energized, driving the rotary cylinder 3 to rotate clockwise until the other profiling hole 9 is opposite to the discharge port 7, and the profiling hole 9 is opposite to the receiving port 8;

[0061] Step S5: The right coil of the second solenoid valve 12 is energized, and the cylinder 2 with the guide rod descends. At this time, the other profiling hole 9 is located above the discharge port 7, and the other profiling hole 9 covers the screw sent out of the discharge port 7. A sealed cavity is formed between the other profiling hole 9 and the discharge port 7. The profiling hole 9 is located above the receiving port 8, and a sealed cavity is formed between the profiling hole 9 and the receiving port 8.

[0062] Step S6: the coil of the other one-way valve 10 is energized to control the vacuum generator 6 to pass vacuum into the other profiling hole 9, and the screw in the discharge port 7 is sucked into the other profiling hole 9. At the same time, the coil of the one-way valve 10 is de-energized, and the first solenoid valve 11 is energized and then de-energized to control the vacuum generator 6 to pass high-pressure air into the profiling hole 9, so that the screw in the profiling hole 9 is blown into the receiving port 8 and transported to the designated position through the second air pipe;

[0063] Step S7: The left coil of the second solenoid valve 12 is energized, the cylinder 2 with the guide rod rises, and the left coil of the other second solenoid valve 12 is energized, driving the rotary cylinder 3 to rotate counterclockwise until the one profiling hole 9 is opposite to the discharge port 7, and the other profiling hole 9 is opposite to the receiving port 8;

[0064] Step S8: The right coil of the second solenoid valve 12 is energized, and the cylinder 2 with the guide rod descends. At this time, the profiling hole 9 is located above the discharge port 7, and the profiling hole 9 covers the screw sent out of the discharge port 7, and a sealed cavity is formed between the profiling hole 9 and the discharge port 7. The other profiling hole 9 is located above the receiving port 8, and a sealed cavity is formed between the other profiling hole 9 and the receiving port 8.

[0065] Step S9: the coil of the one-way valve 10 is energized, and the vacuum generator 6 is controlled to pass vacuum into the one profiling hole 9, so that the screw in the discharge port 7 is sucked into the one profiling hole 9. At the same time, the coil of the other one-way valve 10 is de-energized, and the other first solenoid valve 11 is energized and then de-energized, and the vacuum generator 6 is controlled to pass high-pressure air into the other profiling hole 9, so that the screw in the other profiling hole 9 is blown into the receiving port 8, and transported to the designated position through the second air pipe;

[0066] Step S10: Repeat steps S4 to S9 until the operation of the screw feeding mechanism is completed.

[0067] Preferably, the first solenoid valve 11 is the third solenoid valve 24, the other first solenoid valve 11 is the fourth solenoid valve 25, the second solenoid valve 12 is the fifth solenoid valve 26, the other second solenoid valve 12 is the sixth solenoid valve 27, the one-way valve 10 is the first one-way valve 28, and the other one-way valve 10 is the second one-way valve 29.

[0068] The screw feeding mechanism of the present invention is not limited by the installation space and can be installed at a designated position as needed. It does not need to be installed on the work surface or within the travel range of the three-axis platform and the automatic screwdriver. It can be installed in the corner of the table or under the table, which is convenient for the design of other mechanisms and for workers to add screws.

[0069] The screws of the present invention are fed by the second air pipe, and can be fed over a long distance. In addition, the screw feeding mechanism can be centrally installed, which is convenient for management.

[0070] The screws of the present invention are directly transported to a designated position, such as an automatic screwdriver, without the need for a three-axis platform and an automatic screwdriver to move and retrieve materials, thus saving a large part of time, speeding up the cycle, and improving assembly efficiency.

[0071] The present invention combines the use of a screw feeder, a guide rod cylinder and a rotary cylinder, integrates a material moving mechanism and a material receiving mechanism of a suction cup and a nozzle, thereby realizing automatic feeding and delivering of screws. The present invention has a simple structure, concise and rapid movements, and a fast rhythm, and can meet the needs of fast working of an automatic screwdriver.

[0072] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A screw feeding mechanism based on a cylinder suction cup nozzle, characterized in that: include: A screw feeder, wherein the screw feeder is provided with a discharge port; A cylinder with a guide rod, wherein the cylinder with a guide rod is arranged at one end of the screw feeder; A rotary cylinder, the rotary cylinder is drivingly connected to the movable end of the cylinder with a guide rod, and the cylinder with a guide rod is used to drive the rotary cylinder to move up and down; A material receiving block, which is arranged on one side of the rotary cylinder and has a material receiving port; A material moving block, the material moving block is drivingly connected to the movable end of the rotary cylinder, the rotary cylinder is used to drive the material moving block to rotate, both ends of the material moving block are provided with profiling holes, the two profiling holes are respectively opposite to the material discharging port and the material receiving port, and the two profiling holes respectively form a sealed cavity with the material discharging port and the material receiving port; A vacuum generator, the vacuum generator is arranged below the screw feeder, and the vacuum generator is connected to the two contour holes through a first air pipe respectively; Also includes: Two first solenoid valves, both of which are two-position two-way solenoid valves, and the two first solenoid valves are respectively connected to the vacuum generator and the two contoured holes; Two second solenoid valves, both of which are three-position five-way solenoid valves, one of which is used to drive the cylinder with guide rod to rise or fall, and the other of which is used to drive the rotary cylinder to rotate; Two one-way valves, the two one-way valves are connected to the vacuum generator and the two contoured holes respectively; Also includes: A bottom plate, the screw feeder is arranged on one end of the bottom plate, and the cylinder with a guide rod is arranged on the other end of the bottom plate; An adapter plate, wherein the adapter plate is fixedly connected to the movable end of the cylinder with the guide rod, and the rotary cylinder is fixedly connected to the adapter plate; Two support plates, the two support plates are respectively arranged at the bottom of two sides of the bottom plate; The two first solenoid valves, the two second solenoid valves and the two one-way valves are all arranged at the bottom of the base plate; Both ends of the material moving block are provided with threaded holes, the two threaded holes are respectively connected with the two contoured holes, the two threaded holes are respectively located at the two ends of the top of the material moving block, the two contoured holes are respectively located at the two ends of the bottom of the material moving block, and the two threaded holes are respectively connected with the two first air pipes through quick-insert connectors.

2. According to claim 1, the screw feeding mechanism based on the cylinder suction cup nozzle is characterized in that: The two sides of the screw feeder are fixedly connected to one end of the bottom plate through a mounting plate.

3. The screw feeding mechanism based on the cylinder suction cup nozzle according to claim 1 is characterized in that: Also includes: An electrical connection plug, a one-to-two first air pipe joint, and a one-to-four first air pipe joint, wherein the electrical connection plug, the one-to-two first air pipe joint, and the one-to-four first air pipe joint are all arranged at the bottom of the base plate.

4. The screw feeding mechanism based on the cylinder suction cup nozzle according to claim 1 is characterized in that: A second air pipe is provided at the bottom of the material receiving block, and the second air pipe is fixedly connected to the material receiving port through an air pipe locking nut.

5. The screw feeding mechanism based on the cylinder suction cup nozzle according to claim 1 is characterized in that: A support seat is provided on the bottom plate, and the material receiving block is provided on the support seat. The upper surface of the material receiving block is flush with the upper surface of the screw feeder located at the discharge port.

6. A working method of a screw feeding mechanism based on a cylinder suction cup nozzle, characterized in that: The screw feeding mechanism based on the cylinder suction cup nozzle comprises any one of claims 2 to 5, wherein the working method comprises: Step S1: the left coil of the second solenoid valve is energized to drive the cylinder with the guide rod to rise, and the coils of the two first solenoid valves and the two one-way valves are deenergized to achieve the reset of the screw feeding mechanism; Step S2: the right coil of the second solenoid valve is energized to drive the cylinder with guide rod to descend, at which time, one of the profiling holes is located above the discharge port, the one of the profiling holes covers the screw sent out of the discharge port, and the sealing cavity is formed between the one of the profiling holes and the discharge port, and the other of the profiling holes is located above the receiving port, and the sealing cavity is formed between the other of the profiling holes and the receiving port; Step S3: the coil of the one-way valve is energized to control the vacuum generator to introduce vacuum into the one of the contoured holes, so that the screw in the discharge port is sucked into the one of the contoured holes; Step S4: the left coil of the second solenoid valve is energized to drive the cylinder with guide rod to rise, and the right coil of the other second solenoid valve is energized to drive the rotary cylinder to rotate until the other profiling hole is opposite to the discharge port and the profiling hole is opposite to the receiving port; Step S5: the right coil of the second solenoid valve is energized to drive the cylinder with guide rod to descend, at which time, the other profiling hole is located above the discharge port, the other profiling hole covers the screw sent out of the discharge port, and the sealed cavity is formed between the other profiling hole and the discharge port, and the profiling hole is located above the receiving port, and the sealed cavity is formed between the profiling hole and the receiving port; Step S6: the coil of the other one-way valve is energized to control the vacuum generator to introduce vacuum into the other one-shaped hole, so that the screw in the discharge port is sucked into the other one-shaped hole. At the same time, the coil of the one-way valve is de-energized, and the first solenoid valve is energized and then de-energized, and the vacuum generator is controlled to introduce high-pressure air into the one-shaped hole, so that the screw in the one-shaped hole is blown into the receiving port and transported to the designated position. Step S7: the left coil of the second solenoid valve is energized to drive the cylinder with guide rod to rise, and the left coil of the other second solenoid valve is energized to drive the rotary cylinder to rotate counterclockwise until the one profiling hole is opposite to the discharge port and the other profiling hole is opposite to the receiving port; Step S8: the right coil of the second solenoid valve is energized to drive the cylinder with guide rod to descend, at which time, the profiling hole is located above the discharge port, the profiling hole covers the screw sent out of the discharge port, and the sealing cavity is formed between the profiling hole and the discharge port, and the other profiling hole is located above the receiving port, and the sealing cavity is formed between the other profiling hole and the receiving port; Step S9: the coil of the one-way valve is energized to control the vacuum generator to introduce vacuum into the one profiling hole, so that the screw in the discharge port is sucked into the one profiling hole. At the same time, the coil of the other one-way valve is de-energized, and the other first solenoid valve is energized and then de-energized, and the vacuum generator is controlled to introduce high-pressure air into the other profiling hole, so that the screw in the other profiling hole is blown into the receiving port and transported to the designated position. Step S10: Repeat steps S4 to S9 until the operation of the screw feeding mechanism is completed.

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