Vacuum adsorption fixed type flexible transmission type nut mounting machine

Abstract

The invention discloses a vacuum adsorption fixed flexible transmission type nut mounting machine, which belongs to the technical field of nut mounting, and comprises a nut state adjusting slideway, a nut shielding mechanism, a nut positioning mechanism, a nut transmission bearing mounting rod, a nut mounting rotating mechanism and a nut mounting feeding mechanism, the nut state adjusting slideway is used for adjusting the posture of the nut and conveying the nut to the nut positioning mechanism; the nut shielding mechanism is used for shielding the nut state adjusting slide way and preventing the nut in the nut state adjusting slide way from falling into the nut positioning mechanism; the nut positioning mechanism is used for positioning the nut to ensure that the posture of the nut corresponds to the hexagonal mounting groove; the nut transmission bearing mounting rod is used for bearing and mounting a nut. The state of the nut is adjusted through the nut state adjusting slide way, so that the nut can smoothly enter the hexagonal mounting groove in the end face of the transmission rod body, the nut mounting stability is greatly improved, the failure rate is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nut installation, in particular to a nut installation machine. Background Art

[0002] The existing nut installation machine has the following defects in actual application: first, the nut is easily fallen off during installation; second, the working performance of the nut installation machine is unstable, resulting in low installation efficiency. Summary of the Invention

[0003] The object of the present invention is to provide a vacuum adsorption fixed flexible transmission type nut installation machine with stable working performance and high working efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: A vacuum adsorption fixed flexible transmission nut installation machine includes a nut state adjustment slide, a nut shielding mechanism, a nut positioning mechanism, a nut transmission bearing installation rod, a nut installation rotating mechanism and a nut installation feeding mechanism. The nut state adjustment slide is used to adjust the posture of the nut and transport the nut to the nut positioning mechanism; the nut shielding mechanism is used to shield the nut state adjustment slide to prevent the nut in the nut state adjustment slide from falling into the nut positioning mechanism; the nut positioning mechanism is used to position the nut to ensure that the nut posture corresponds to the hexagonal installation groove on the end face of the nut transmission bearing installation rod; the nut transmission bearing installation rod is used to carry and install the nut; the nut installation rotating mechanism is used to drive the nut transmission bearing installation rod to perform rotational motion; the nut installation feeding mechanism is used to drive the nut transmission bearing installation rod to perform linear motion.

[0005] Furthermore, the nut transmission bearing mounting rod includes a transmission rod body, a spring and a nut bearing tube, a receiving hole is provided on one end face of the transmission rod body, the nut bearing tube and the spring are arranged in the receiving hole, and the spring is located between the hole end of the receiving hole and the nut bearing tube, a closed ring is provided between the nut bearing tube and the inner wall surface of the receiving hole, a nut bearing rod is provided at the closed end of the nut bearing tube, nut suction holes are distributed on the closed end of the nut bearing tube and around the nut bearing rod, the nut suction holes are connected with the cavity in the nut bearing tube, the cavity in the nut bearing tube is connected with the receiving hole, the receiving hole is connected with the vacuum channel in the transmission rod body, the vacuum channel is connected with the vacuum main pipeline through the vacuum branch pipeline C, an electromagnetic three-way valve C is provided on the vacuum branch pipeline C, and the vacuum main pipeline is connected to the vacuum pump.

[0006] Furthermore, the hexagonal installation groove is provided on the end surface of the transmission rod body and is located at the receiving hole. When the nut is rotated and installed, the nut bearing tube is retracted into the receiving hole, and the hexagonal installation groove is used to accommodate the nut.

[0007] Furthermore, the nut positioning mechanism includes a left positioning block and a right positioning block, and a left positioning groove and a right positioning groove are respectively provided on the side surfaces of the left positioning block and the right positioning block, and a left air flow channel and a right air flow channel are respectively provided in the left positioning block and the right positioning block, and the left air flow channel and the right air flow channel are respectively connected to one end of the exhaust branch pipeline A and the exhaust branch pipeline B, and the other ends of the exhaust branch pipeline A and the exhaust branch pipeline B are connected to the exhaust main pipeline, and an electromagnetic three-way valve A and an electromagnetic three-way valve B are respectively provided on the exhaust branch pipeline A and the exhaust branch pipeline B. The two connecting ports of the electromagnetic three-way valve A are connected in series to the exhaust branch pipeline A, and the two connecting ports of the electromagnetic three-way valve B are connected in series to the exhaust branch pipeline B. The third connecting port of the electromagnetic three-way valve A and the electromagnetic three-way valve B is connected to the outside atmosphere. The left positioning groove is provided with a left positioning suction hole connected to the left air flow channel, and the right positioning groove is provided with a right positioning suction hole connected to the right air flow channel. The left positioning groove and the right positioning groove together position the left and right sides of the nut, and the left positioning suction hole and the right positioning suction hole are used to adsorb and position the end face of the nut.

[0008] Furthermore, the nut positioning mechanism also includes a guide rail, a left slider, a right slider, a left cylinder and a right cylinder. The left positioning block and the right positioning block are respectively installed on the left slider and the right slider. The left slider and the right slider are installed on the guide rail. The left cylinder and the right cylinder are respectively used to drive the left slider and the right slider to slide along the guide rail.

[0009] Furthermore, the width between the inner walls of the nut state adjustment slide is greater than the spacing between the relative planes of the nut outer contour and smaller than the spacing between the diagonals; the lower port of the nut state adjustment slide is located above between the left positioning block and the right positioning block.

[0010] Furthermore, the nut blocking mechanism includes a support frame, a blocking rod and a blocking drive cylinder, one end of the blocking rod is installed on the piston rod end of the blocking drive cylinder, the blocking drive cylinder is installed on the support frame, and the support frame is installed on the side wall of the nut state adjustment slide, and the side wall of the nut state adjustment slide is provided with a through hole, and the other end of the blocking drive cylinder drives the blocking rod to extend into the nut state adjustment slide through the through hole to block the nut in the nut state adjustment slide to prevent the nut from falling into the nut positioning mechanism.

[0011] Furthermore, the nut installation feeding mechanism includes a feeding cylinder and a flexible transmission member, and the flexible transmission member includes a transmission slider A, a transmission slider B, a slide rail, a limiting guide rod and a transmission spring. The slide rail is installed on the bottom surface of the base, and the transmission slider A and the transmission slider B are installed on the slide rail. The transmission rod body in the nut transmission bearing mounting rod is installed on the bracket through a bearing, and the bracket is fixed on the transmission slider B. The transmission slider B is penetrated by a through hole parallel to the slide rail, one end of the limiting guide rod is fixed on the end face of the transmission slider A, and the other end of the limiting guide rod passes through the through hole of the transmission slider B. The transmission spring is inserted on the limiting guide rod and is located between the transmission slider A and the transmission slider B. The feeding cylinder is used to drive the transmission slider A to move along the slide rail, and the transmission slider A drives the transmission slider B to move along the slide rail through the transmission spring, and the transmission slider B drives the nut transmission bearing mounting rod to perform linear motion through the support frame.

[0012] Furthermore, the nut mounting rotation mechanism includes a rotation mounting motor, a reducer and a sliding connection, the sliding connection includes a slide rod and a sleeve, the slide rod is fixedly connected to the end of the transmission rod body, the slide rod is provided with an elongated sliding hole along the axial direction of the slide rod, one end of the sleeve is inserted into the slide rod and connected by a pin shaft, the pin shaft passes through the elongated sliding hole and can slide along the elongated sliding hole, the other end of the sleeve is fixedly connected to the output shaft of the reducer, the power input shaft of the reducer is connected to the output shaft of the rotation mounting motor, the reducer and the rotation mounting motor are installed on a rotation drive base, and the rotation drive base is installed on the transmission slider A.

[0013] Furthermore, two fixing rods are installed on the side walls of the rotation drive base, and the ends of the two fixing rods are fixed with bearing sleeves. The transmission rod body passes through the bearing sleeves. The transmission rod body can rotate relative to the bearing sleeves and can also slide linearly relative to the bearing sleeves.

[0014] The beneficial effects of the present invention are: The present application adjusts the state of the nut through a nut state adjustment slide, so that the nut can smoothly enter the hexagonal installation groove on the end face of the transmission rod body, greatly improving the stability of the nut installation, reducing the failure rate, and improving work efficiency.

[0015] This application improves the nut transmission bearing installation rod and the nut positioning mechanism, so that the nut can be firmly sucked through the nut suction hole, solving the problem that the nut is easy to fall off during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not limit the present invention in any way. A person skilled in the art can derive other drawings based on the following drawings without inventive effort. Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The schematic diagram of the structure of the nut transmission bearing mounting rod is shown; Figure 3 for Figure 2 The structural diagram of the end of the transmission rod body is shown; Figure 4 for Figure 1 Side view shown; Figure 5 for Figure 4 The schematic diagram of the structure of the left positioning block and the right positioning block in a top view is shown; Figure 6 for Figure 1 Rear view shown; Figure 7 for Figure 1 Bottom view shown; Figure 8 for Figure 1 The stereogram shown.

[0017] In the figure: 1. Nut state adjustment slide; 2. Nut shielding mechanism; 3. Nut positioning mechanism; 4. Nut transmission bearing mounting rod; 5. Nut mounting rotation mechanism; 6. Nut mounting feeding mechanism; 7. Transmission rod body; 8. Spring; 9. Nut bearing tube; 10. Storage hole; 11. Nut bearing rod; 12. Nut suction hole; 13. Cavity in the nut bearing tube; 14. Vacuuming channel; 15. Main exhaust pipeline; 16. Vacuum pump; 17. Hexagonal groove; 18. Left positioning block; 19. Right positioning block; 20. Left positioning groove; 21. Right positioning groove; 22. Left air flow channel; 23. Right air flow channel; 24. Left positioning suction hole; 25. Right positioning suction hole; 26. Guide rail; 27. Left slider ;28. Right slider;29. Left cylinder;30. Right cylinder;31. Support frame;32. Stop rod;33. Blocking drive cylinder;34. Through hole;35. Feed cylinder;36. Transmission slider A;37. Transmission slider B;38. Slide rail;39. Limit guide rod;40. Transmission spring;41. Base;42. Bracket;43. Through hole;44. Rotary mounting motor;45. Reducer;46. Slide rod;47. Slide sleeve;48. Long slide hole;49. Pin;50. Rotary drive base;51. Fixed rod;52. Load-bearing slide sleeve;53. Locking nut;54. Exhaust branch line A;55. Exhaust branch line B;56. Solenoid three-way valve A;57. Solenoid three-way valve B. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other unless there is a conflict.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "forward", "reverse", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] like Figure 1 As shown, a vacuum adsorption fixed flexible transmission type nut installation machine includes a nut state adjustment slide 1, a nut shielding mechanism 2, a nut positioning mechanism 3, a nut transmission bearing installation rod 4, a nut installation rotating mechanism 5 and a nut installation feeding mechanism 6. The nut state adjustment slide 1 is used to adjust the posture of the nut and transport the nut to the nut positioning mechanism 2. The nut shielding mechanism 3 is used to shield the nut state adjustment slide 1 to prevent the nut in the nut state adjustment slide 1 from falling into the nut positioning mechanism 3. The nut positioning mechanism 3 is used to position the nut to ensure that the posture of the nut corresponds to the hexagonal installation groove on the end face of the nut transmission bearing installation rod. The nut transmission bearing installation rod 4 is used to carry and install the nut, the nut installation rotating mechanism 5 is used to drive the nut transmission bearing installation rod 4 to perform rotational motion, and the nut installation feeding mechanism 6 is used to drive the nut transmission bearing installation rod 4 to perform linear motion.

[0021] like Figure 2 、 3As shown, the nut transmission bearing mounting rod 4 includes a transmission rod body 7, a spring 8 and a nut bearing tube 9. A receiving hole 10 is provided on one end surface of the transmission rod body 7. The nut bearing tube 9 and the spring 8 are arranged in the receiving hole 10, and the spring 8 is located between the hole end of the receiving hole 10 and the nut bearing tube 9. A closed ring is provided between the nut bearing tube 9 and the inner wall surface of the receiving hole 10. A nut bearing rod 11 is provided at the closed end of the nut bearing tube 9. Nut suction holes 12 are distributed on the closed end of the nut bearing tube 9 and around the nut bearing rod 11. The nut suction holes 12 are connected to the cavity 13 in the nut bearing tube, and the cavity 13 in the nut bearing tube is connected to the receiving hole 10. The receiving hole 10 is connected to the vacuum channel 14 in the transmission rod body 7. The vacuum channel 14 is connected to the vacuum main pipeline 15 through the vacuum branch pipeline C. An electromagnetic three-way valve C is provided on the vacuum branch pipeline C, and the vacuum main pipeline 15 is connected to the vacuum pump 16. The hexagonal groove 17 is provided on the end surface of the transmission rod body 7 and located at the receiving hole 10. When the nut is rotated and installed, the nut supporting tube 9 is retracted into the receiving hole 10, and the hexagonal groove 17 is used to accommodate the nut.

[0022] like Figure 4 、 5 As shown, the nut positioning mechanism 3 includes a left positioning block 18 and a right positioning block 19, and the sides of the left positioning block 18 and the right positioning block 19 are respectively provided with a left positioning groove 20 and a right positioning groove 21, and the left positioning block 18 and the right positioning block 19 are respectively provided with a left air flow channel 22 and a right air flow channel 23, and the left air flow channel 22 and the right air flow channel 23 are respectively connected to one end of the exhaust branch pipeline A54 and the exhaust branch pipeline B55, and the exhaust branch pipeline A54 and the exhaust branch pipeline B55 are respectively connected. The other end of the branch pipeline B55 is connected to the main air extraction pipeline 15. An electromagnetic three-way valve A56 and an electromagnetic three-way valve B57 are respectively provided on the air extraction branch pipeline A54 and the air extraction branch pipeline B55. The two connecting ports of the electromagnetic three-way valve A56 are connected in series to the air extraction branch pipeline A54, and the two connecting ports of the electromagnetic three-way valve B57 are connected in series to the air extraction branch pipeline B55. The third connecting port of the electromagnetic three-way valve A56 and the electromagnetic three-way valve B57 are connected to the outside atmosphere.

[0023] The left positioning groove 20 is provided with a left positioning suction hole 24 connected to the left air flow channel 22, and the right positioning groove 21 is provided with a right positioning suction hole 25 connected to the right air flow channel 23. The left positioning groove 20 and the right positioning groove 21 together position the left and right sides of the nut, and the left positioning suction hole 24 and the right positioning suction hole 25 are used to adsorb and position the end face of the nut.

[0024] The width between the inner walls of the nut state adjustment slide 1 is greater than the spacing between the relative planes of the nut outer contour and smaller than the spacing between the diagonals, and is basically slightly larger than the spacing between the relative planes of the nut outer contour; the lower port of the nut state adjustment slide 1 is located above between the left positioning block 18 and the right positioning block 19.

[0025] The nut positioning mechanism 3 also includes a guide rail 26, a left slider 27, a right slider 28, a left cylinder 29 and a right cylinder 30. The left positioning block 18 and the right positioning block 19 are respectively installed on the left slider 27 and the right slider 28. The left slider 27 and the right slider 28 are installed on the guide rail 26. The left cylinder 29 and the right cylinder 30 are respectively used to drive the left slider 27 and the right slider 28 to slide along the guide rail 26.

[0026] like Figure 6 As shown, the nut blocking mechanism 3 includes a support frame 31, a blocking rod 32 and a blocking drive cylinder 33. One end of the blocking rod 32 is installed on the piston rod end of the blocking drive cylinder 33. The blocking drive cylinder 33 is installed on the support frame 31. The support frame 31 is installed on the side wall of the nut state adjustment slide 1. A through hole 34 is provided on the side wall of the nut state adjustment slide 1. The blocking drive cylinder 33 drives the other end of the blocking rod 32 to extend into the nut state adjustment slide 1 through the through hole 34 to block the nut in the nut state adjustment slide 1 to prevent the nut from falling into the nut positioning mechanism 3.

[0027] like Figure 2 、 6 , 7, 8, the nut installation feeding mechanism 6 includes a feeding cylinder 35 and a flexible transmission member, the flexible transmission member includes a transmission slider A36, a transmission slider B37, a slide rail 38, a limiting guide rod 39 and a transmission spring 40, the slide rail 38 is installed on the bottom surface of the base 41, the transmission slider A36 and the transmission slider B37 are installed on the slide rail 38, the transmission rod body 7 in the nut transmission bearing mounting rod 4 is installed on the bracket 42 through a bearing, the bracket 42 is fixed on the transmission slider B37, and the transmission slider B37 is penetrated by a through hole 43 parallel to the slide rail 38. One end of the limiting guide rod 39 is fixed on the end face of the transmission slider A36, and the other end of the limiting guide rod 39 passes through the through hole 43 of the transmission slider B and is threadedly connected to the locking nut 53. The transmission spring 40 is inserted into the limiting guide rod 39 and is located between the transmission slider A36 and the transmission slider B37. The feed cylinder 35 is used to drive the transmission slider A36 to move along the slide rail 38. The transmission slider A36 drives the transmission slider B37 to move along the slide rail 38 through the transmission spring 40. The transmission slider B37 drives the nut through the support frame 42 to drive the bearing mounting rod 4 to perform linear motion.

[0028] The nut mounting rotation mechanism 5 includes a rotation mounting motor 44, a reducer 45 and a sliding connection. The sliding connection includes a slide rod 46 and a sleeve 47. The slide rod 46 is fixedly connected to the end of the transmission rod body 7. The slide rod 46 is provided with an elongated slide hole 48 along the axial direction of the slide rod. One end of the sleeve 47 is inserted into the slide rod 46 and connected by a pin 49. The pin 49 passes through the elongated slide hole 48 and can slide along the elongated slide hole 48. The other end of the sleeve 47 is fixedly connected to the output shaft of the reducer 45. The power input shaft of the reducer 45 is connected to the output shaft of the rotation mounting motor 44. The reducer 45 and the rotation mounting motor 44 are installed on a rotation drive base 50, and the rotation drive base 50 is installed on the transmission slider A36.

[0029] Two fixed rods 51 are installed on the side walls of the rotary drive base 50, and the ends of the two fixed rods 51 are fixed with bearing sleeves 52. The transmission rod body 7 passes through the bearing sleeve 52. The transmission rod body 7 can rotate relative to the bearing sleeve 52 and can also slide relative to the bearing sleeve 52.

[0030] The working process is as follows: 1. Loading: The control system starts the loading vibration plate, and the nuts enter the nut state adjustment slide 1 after being sorted by the loading vibration plate. Since the width of the nut state adjustment slide 1 is slightly larger than the distance between the relative planes of the nut outer contour, the posture of the nut after entering the nut state adjustment slide 1 is adjusted to have the pointed corner facing upward, and the two planes of the nut outer contour are nearly parallel to the side walls of the nut state adjustment slide 1. The nut falls downward through the nut state adjustment slide 1 to the left positioning groove 20 of the left positioning block 18 and the right positioning groove 21 of the right positioning block 19 in the nut positioning mechanism 3; the control system starts the blocking drive cylinder 33 to drive the other end of the blocking rod 32 to extend into the nut state adjustment slide 1 through the through hole 34, blocking the nut in the nut state adjustment slide 1 to prevent the nut from falling into the nut positioning mechanism 3, to ensure that there can be only one nut in the nut positioning mechanism.

[0031] 2. Adsorption: The control system starts the vacuum pump 16 and opens the electromagnetic three-way valve A56 and the electromagnetic three-way valve B57, and adsorbs and positions both sides of one end face of the nut through the left positioning suction hole 24 and the right positioning suction hole 25.

[0032] 3. The control system starts the nut installation feeding mechanism 6, drives the nut transmission bearing installation rod 4 to move forward, puts the nut to be installed onto the nut bearing rod 11 and makes the nut close to the end face of the nut bearing tube 9 until the nut on the nut positioning mechanism 3 enters the hexagonal groove 17 on the end face of the transmission rod body 7, and then closes the nut installation feeding mechanism 6.

[0033] 4. Close the electromagnetic three-way valve A56 and the electromagnetic three-way valve B57, block the exhaust branch pipeline A54 and the exhaust branch pipeline B55, relieve the pressure in the left positioning suction hole 24 and the right positioning suction hole 25, open the electromagnetic three-way valve C, make the exhaust branch pipeline C conductive, and make the nut suction hole 12 on the end face of the nut bearing tube 9 firmly suck the nut.

[0034] 5. The control system starts the left cylinder 29 and the right cylinder 30 in the nut positioning mechanism 3, driving the left slider 27 and the right slider 28 to move to both sides along the guide rail 26, thereby driving the left positioning block 18 and the right positioning block 19 to move to both sides, leaving a channel and space for the installation of the nut, so as not to affect the forward advancement of the nut transmission bearing mounting rod 4.

[0035] 6. The control system starts the nut installation feeding mechanism 6 again, so that the nut transmission bearing installation rod 4 is pushed forward. When the nut is pressed to the end of the corresponding screw, the nut bearing tube 9 is retracted into the receiving hole 10 under the pressure of the screw. At this time, the nut is pressed to the end face of the hexagonal groove 17 on the end face of the transmission rod body 7. Note that at this time, the nut installation feeding mechanism 6 is not closed to provide feed force for the nut installation. Since the nut installation feeding mechanism 6 adopts a flexible transmission part, it will not damage related components.

[0036] 7. The control system starts the nut installation rotating mechanism 5, transmits torque through the hexagonal slot 17, and installs the nut on the corresponding screw. After the nut installation is completed, the vacuum pump and the nut installation feeding mechanism 6 and the nut installation rotating mechanism 5 are turned off.

[0037] In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent. Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A vacuum adsorption fixed flexible transmission nut installation machine, characterized by: It includes a nut state adjustment slide, a nut shielding mechanism, a nut positioning mechanism, a nut transmission bearing mounting rod, a nut installation rotating mechanism and a nut installation feeding mechanism. The nut state adjustment slide is used to adjust the posture of the nut and convey the nut to the nut positioning mechanism; the nut shielding mechanism is used to shield the nut state adjustment slide to prevent the nut in the nut state adjustment slide from falling into the nut positioning mechanism; the nut positioning mechanism is used to position the nut to ensure that the nut posture corresponds to the hexagonal mounting groove on the end face of the nut transmission bearing mounting rod; the nut transmission bearing mounting rod is used to carry and install the nut; the nut installation rotating mechanism is used to drive the nut transmission bearing mounting rod to rotate; The nut installation feeding mechanism is used to drive the nut to transmit the bearing installation rod to perform linear motion.

2. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 1, characterized in that: The nut transmission bearing mounting rod includes a transmission rod body, a spring and a nut bearing tube. A receiving hole is provided on one end surface of the transmission rod body. The nut bearing tube and the spring are arranged in the receiving hole, and the spring is located between the hole end of the receiving hole and the nut bearing tube. A closed ring is provided between the nut bearing tube and the inner wall surface of the receiving hole. A nut bearing rod is provided at the closed end of the nut bearing tube. Nut suction holes are distributed on the closed end of the nut bearing tube and around the nut bearing rod. The nut suction holes are connected to the cavity in the nut bearing tube, and the cavity in the nut bearing tube is connected to the receiving hole. The receiving hole is connected to the vacuum channel in the transmission rod body. The vacuum channel is connected to the vacuum main pipeline through the vacuum branch pipeline C. An electromagnetic three-way valve C is provided on the vacuum branch pipeline C, and the vacuum main pipeline is connected to the vacuum pump.

3. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 2, characterized in that: The hexagonal installation groove is provided on the end surface of the transmission rod body and is located at the receiving hole. When the nut is rotated and installed, the nut bearing tube is retracted into the receiving hole, and the hexagonal installation groove is used to accommodate the nut.

4. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 3, characterized in that: The nut positioning mechanism includes a left positioning block and a right positioning block, and a left positioning groove and a right positioning groove are respectively provided on the side surfaces of the left positioning block and the right positioning block, and a left air flow channel and a right air flow channel are respectively provided in the left positioning block and the right positioning block, and the left air flow channel and the right air flow channel are respectively connected to one end of the exhaust branch pipeline A and the exhaust branch pipeline B, and the other ends of the exhaust branch pipeline A and the exhaust branch pipeline B are connected to the exhaust main pipeline, and an electromagnetic three-way valve A and an electromagnetic three-way valve B are respectively provided on the exhaust branch pipeline A and the exhaust branch pipeline B. The two connecting ports of the magnetic three-way valve A are connected in series to the exhaust branch pipeline A, and the two connecting ports of the electromagnetic three-way valve B are connected in series to the exhaust branch pipeline B. The third connecting port of the electromagnetic three-way valve A and the electromagnetic three-way valve B is connected to the outside atmosphere. The left positioning groove is provided with a left positioning suction hole connected to the left air flow channel, and the right positioning groove is provided with a right positioning suction hole connected to the right air flow channel. The left positioning groove and the right positioning groove together position the left and right sides of the nut, and the left positioning suction hole and the right positioning suction hole are used to adsorb and position the end face of the nut.

5. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 4, characterized in that: The nut positioning mechanism also includes a guide rail, a left slider, a right slider, a left cylinder and a right cylinder. The left positioning block and the right positioning block are respectively installed on the left slider and the right slider. The left slider and the right slider are installed on the guide rail. The left cylinder and the right cylinder are respectively used to drive the left slider and the right slider to slide along the guide rail.

6. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 5, characterized in that: The width between the inner walls of the nut state adjustment slide is greater than the spacing between the relative planes of the nut outer contour and smaller than the spacing between the diagonals; the lower port of the nut state adjustment slide is located above the left positioning block and the right positioning block.

7. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 6, characterized in that: The nut blocking mechanism includes a support frame, a blocking rod and a blocking drive cylinder. One end of the blocking rod is installed on the piston rod end of the blocking drive cylinder. The blocking drive cylinder is installed on the support frame. The support frame is installed on the side wall of the nut state adjustment slide. The side wall of the nut state adjustment slide is provided with a through hole. The other end of the blocking rod of the blocking drive cylinder extends into the nut state adjustment slide through the through hole to block the nut in the nut state adjustment slide to prevent the nut from falling into the nut positioning mechanism.

8. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 7, characterized in that: The nut installation feeding mechanism includes a feeding cylinder and a flexible transmission member, and the flexible transmission member includes a transmission slider A, a transmission slider B, a slide rail, a limiting guide rod and a transmission spring. The slide rail is installed on the bottom surface of the base, and the transmission slider A and the transmission slider B are installed on the slide rail. The transmission rod body in the nut transmission bearing mounting rod is installed on the bracket through a bearing, and the bracket is fixed on the transmission slider B. The transmission slider B is penetrated by a through hole parallel to the slide rail, one end of the limiting guide rod is fixed on the end face of the transmission slider A, and the other end of the limiting guide rod passes through the through hole of the transmission slider B. The transmission spring is inserted on the limiting guide rod and is located between the transmission slider A and the transmission slider B. The feeding cylinder is used to drive the transmission slider A to move along the slide rail, and the transmission slider A drives the transmission slider B to move along the slide rail through the transmission spring, and the transmission slider B drives the nut transmission bearing mounting rod to perform linear motion through the support frame.

9. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 8, characterized in that: The nut mounting rotation mechanism includes a rotation mounting motor, a reducer and a sliding connection member, the sliding connection member includes a slide rod and a sleeve, the slide rod is fixedly connected to the end portion of the transmission rod body, the slide rod is provided with an elongated sliding hole along the axial direction of the slide rod, one end of the sleeve is inserted into the slide rod and connected by a pin shaft, the pin shaft passes through the elongated sliding hole and can slide along the elongated sliding hole, the other end of the sleeve is fixedly connected to the output shaft of the reducer, the power input shaft of the reducer is connected to the output shaft of the rotation mounting motor, the reducer and the rotation mounting motor are installed on a rotation driving base, and the rotation driving base is installed on the transmission slider A.

10. The vacuum adsorption fixed flexible transmission nut installation machine according to claim 9, characterized in that: Two fixing rods are installed on the side walls of the rotary drive base, and the ends of the two fixing rods are fixed with bearing sleeves. The transmission rod body passes through the bearing sleeve. The transmission rod body can rotate relative to the bearing sleeve and can also slide linearly relative to the bearing sleeve.

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