An automated conveying device based on nitrogen spring production

Abstract

This invention relates to the field of nitrogen spring production equipment technology, specifically an automatic conveying device for nitrogen spring production. The device includes a frame, a turnover seat, a turnover drive device, a clamping mechanism, a rotation drive device, a loading / unloading mechanism, and a pushing mechanism. The turnover seat is driven to rotate by the turnover drive device. The clamping mechanism includes a rotating cylinder, a clamping component, and an elastic component. The rotating cylinder is rotatably mounted on the turnover seat, and the clamping component is located inside the rotating cylinder and connected to it via the elastic component. The loading / unloading mechanism includes grippers. The clamping mechanism can stably clamp the piston rod to the center of the rotating cylinder, reducing the shaking of the nitrogen spring during rotation and improving stability. The lower end face of the cylinder at the top of the rotating cylinder makes contact with the piston rod, effectively protecting the piston rod and preventing paint from adhering to it. The pushing mechanism can drive the piston rod to descend and ascend, ensuring that paint mist does not contact the piston rod during painting and facilitating gripper clamping of the piston rod.

Description

Technical Field

[0001] This invention relates to the field of nitrogen spring production equipment technology, and in particular to an automatic conveying device based on nitrogen spring production. Background Technology

[0002] Nitrogen springs are a new type of elastic component that uses high-pressure nitrogen gas as the working medium. They generally include a cylinder, piston rod, and guide sleeve, with a sealing ring between the piston rod and the guide sleeve for sealing. During the production of nitrogen springs, the outer wall of the cylinder needs to be painted for both protection and aesthetics.

[0003] Patent CN208554745U discloses a gas spring spray painting device, which includes a butterfly electrostatic spray painting system, a conveying mechanism, and a fixture. This device uses the fixture to fix the gas spring, and the conveying mechanism drives the fixture to rotate, achieving uniform spraying of the gas spring. However, the existing technology has the following problems: when the piston rod is inserted into the fixture and rotates, due to the gap between the piston rod and the inner wall of the fixture, the cylinder of the nitrogen spring and the piston rod are prone to shaking during rotation, leading to reduced stability of the nitrogen spring's rotation, and in severe cases, it may even fly out of the fixture; simultaneously, during the spraying process, the shaking nitrogen spring can easily cause atomized paint particles to enter the gap between the fixture and the piston rod and adhere to the piston rod surface, affecting the quality of the nitrogen spring. Therefore, there is an urgent need for an automatic conveying device that can stably convey the nitrogen spring and effectively protect the piston rod. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic conveying device based on nitrogen spring production, so as to solve the problem in the prior art that nitrogen springs sway during the painting process due to the gap between the piston rod and the inner wall of the fixture, and paint mist adheres to the piston rod, causing failure.

[0005] To achieve the above objectives, the present invention provides an automatic conveying device for nitrogen spring production, comprising a frame, a turnover seat, a turnover drive device, a clamping mechanism, a rotation drive device, a loading / unloading mechanism, and a pushing mechanism. The turnover seat is driven to rotate by the turnover drive device. The clamping mechanism includes a rotating cylinder, clamping components, and elastic components. The rotating cylinder is rotatably mounted on the turnover seat via bearings. The clamping components are located inside the rotating cylinder and connected to the rotating cylinder via the elastic components. The clamping components are circumferentially distributed along the center of the rotating cylinder. The loading / unloading mechanism includes grippers for clamping the piston rod of the nitrogen spring and inserting the piston rod into the rotating cylinder at the loading / unloading station, so that the clamping components clamp the piston rod. The rotation drive device is used to drive the rotating cylinder at the painting station to rotate. The pushing mechanism is used to drive the piston rod to descend so that the lower end face of the nitrogen spring cylinder contacts the top of the rotating cylinder, and to drive the piston rod to rise so that there is a distance between the end face of the nitrogen spring cylinder facing the piston and the top of the rotating cylinder for the grippers to move and clamp the piston rod.

[0006] Preferably, the pushing mechanism includes a first linear push rod and an electromagnet. The first linear push rod is mounted on the frame, and the electromagnet is connected to the output end of the first linear push rod. The electromagnet can enter the interior of the rotating cylinder from the bottom of the rotating cylinder and magnetically engage with the piston rod of the nitrogen spring.

[0007] Preferably, the loading and unloading mechanism further includes a first linear slide, a first transverse frame, a second linear push rod, a lifting frame, a drive motor, and a rotating frame. The first linear slide is mounted on the machine frame, the first transverse frame is mounted on the output end of the first linear slide, the second linear push rod is mounted on the first transverse frame, the lifting frame is connected to the output end of the second linear push rod, the drive motor is mounted on the lifting frame, the rotating frame is rotatably connected to the lifting frame, a rotating shaft is fixed on the lifting frame, the drive motor is connected to the rotating shaft and can drive the rotating shaft to rotate at a preset angle, and the gripper is mounted on the lifting frame.

[0008] Preferably, the top of the rotating cylinder is provided with a flange, which is used to contact and engage with the lower end face of the cylinder body to prevent paint mist from contacting the piston rod. This creates a gap between the lower end face of the cylinder body and the rotating cylinder, the same height as the flange, facilitating contact between the paint mist and the upper end face of the cylinder body. The lower end face of the cylinder body refers to the end face of the cylinder body facing the piston rod.

[0009] Preferably, the gripper includes two clamping portions capable of moving towards and away from each other, and the opposing end face of the clamping portions is provided with a V-shaped groove for clamping the piston rod. At least two grippers are provided, and the grippers are circumferentially distributed along the axis of rotation.

[0010] Preferably, the upper end of the clamping part is provided with a relief groove for accommodating a protruding part that protrudes from the lower end face of the cylinder body, so that the upper end face of the cylinder body abuts against the upper end face of the clamping part; the relief groove is connected to the V-shaped groove.

[0011] Preferably, the self-rotation drive device includes a second linear slide, a mounting plate, and a rack. The second linear slide is mounted on the frame, the mounting plate is mounted on the output end of the second linear slide, and the rack is fixedly connected to the mounting plate. The clamping mechanism also includes a gear, which is fixedly mounted on the lower part of the rotating cylinder and located below the rotating seat. The second linear slide is used to drive the rack to move linearly so that the rack meshes with the gear at the painting station.

[0012] Preferably, there are multiple rotating cylinders, which are distributed circumferentially around the rotation center of the rotating seat.

[0013] Preferably, the turnover drive device is a hollow rotary table, which is mounted on the frame and the turnover seat is mounted on the turnover drive device.

[0014] Preferably, the clamping mechanism further includes guide rods, with at least two guide rods fixed on the clamping member. The guide rods are slidably connected to the rotating cylinder, and one end of the guide rod extends out of the rotating cylinder and is fitted with a limiting element. The elastic element is a spring, which is fitted onto the guide rod.

[0015] Compared with existing technologies, this technical solution has at least one of the following beneficial effects:

[0016] 1. In the clamping mechanism, the clamping parts are distributed circumferentially along the center of the rotating cylinder and connected to the rotating cylinder through elastic elements, which can stably clamp the piston rod to the center of the rotating cylinder, reduce the shaking when the nitrogen spring rotates, and improve stability.

[0017] 2. The lower end face of the top cylinder of the self-rotating drum is in contact with the piston rod, which can prevent paint mist from contacting the piston rod, effectively protecting the piston rod and preventing paint from adhering to the piston rod;

[0018] 3. The pushing mechanism can drive the piston rod to descend and ascend. When the pushing mechanism drives the piston rod to descend, it will cause the cylinder body to descend so that its lower end face contacts the top of the rotating drum, ensuring that the paint mist will not come into contact with the piston rod during painting. When it is necessary to unload the material, the pushing mechanism drives the piston rod to ascend, so that the piston rod is exposed above the rotating drum, which is convenient for the gripper to hold the piston rod and avoids the gripper from clamping the surface of the cylinder body after painting, so as not to affect the paint surface. Attached Figure Description

[0019] Figure 1 A perspective view of an automated conveying device based on nitrogen spring production provided in an embodiment of this application;

[0020] Figure 2 A schematic diagram of the structure of an automatic conveying device based on nitrogen spring production provided in an embodiment of this application;

[0021] Figure 3 A side view of an automated conveying device based on nitrogen spring production provided in an embodiment of this application;

[0022] Figure 4 for Figure 3 Sectional view along line AA;

[0023] Figure 5 A partial schematic diagram of an automated conveying device based on nitrogen spring production provided in the embodiments of this application. Figure 1 (The grippers hold the piston rod in the rotating cylinder).

[0024] Figure 6 A partial schematic diagram of an automated conveying device based on nitrogen spring production provided in the embodiments of this application. Figure 2 (The gripper is separated from the piston rod).

[0025] Figure 7A partial schematic diagram of an automated conveying device based on nitrogen spring production provided in the embodiments of this application. Figure 3 (The piston rod is in a downward state due to the electromagnet attracting it).

[0026] Figure 8 This is a cross-sectional view of the clamping mechanism;

[0027] Figure 9 This is a top view of the clamping part;

[0028] Figure 10 for Figure 1 A magnified view of a section at point B in the middle;

[0029] Figure 11 for Figure 7 A magnified view of a section at point C;

[0030] In the diagram, 1. Frame; 11. Loading / unloading station; 12. Painting station; 2. Turntable; 3. Turnover drive device; 4. Clamping mechanism; 41. Rotating cylinder; 411. Flange; 42. Clamping component; 43. Elastic component; 44. Gear; 45. Guide rod; 46. Limiting component; 5. Rotation drive device; 51. Second linear slide; 52. Mounting plate; 53. Rack; 6. Loading / unloading mechanism; 61. Gripper; 611. Clamping part; 612. V-groove; 613. Clearance groove; 62. First linear slide; 63. First transverse frame; 64. Second linear push rod; 65. Lifting frame; 66. Drive motor; 67. Rotating frame; 68. Rotating shaft; 7. Pushing mechanism; 71. First linear push rod; 72. Electromagnet; 8. Nitrogen spring; 81. Piston rod; 82. Cylinder body; 821. Lower end face; 83. Protruding part. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Please see Figures 1 to 11 This application provides an automatic conveying device based on nitrogen spring production, including a frame 1, a turnover seat 2, a turnover drive device 3, a clamping mechanism 4, a self-rotation drive device 5, a loading and unloading mechanism 6, and a pushing mechanism 7.

[0033] The turnover seat 2 is driven to rotate by the turnover drive device 3, which is a hollow rotary table and is fixedly installed on the frame 1. The turnover seat 2 is installed at the output end of the hollow rotary table and is driven by the hollow rotary table to rotate around its central axis, thereby realizing the switching of various stations on the turnover seat 2, such as the loading and unloading station 11 and the painting station 12.

[0034] By setting the turnover drive device 3 as a hollow rotary table, it is easy to fix the fixed column passing through the hollow channel of the turnover drive device 3 on the frame 1, and fix the mounting plate for installing the painting device on the fixed column, so as to facilitate the painting operation.

[0035] The nitrogen spring 8 includes a cylinder 82 and a piston rod 81.

[0036] The clamping mechanism 4 includes a rotating cylinder 41, clamping members 42, and elastic members 43. The rotating cylinder 41 is rotatably mounted on the rotating base 2. The clamping members 42 are located inside the rotating cylinder 41 and connected to it via the elastic members 43. The clamping members 42 are circumferentially distributed along the center of the rotating cylinder 41. The rotating cylinders 41 are circumferentially distributed along the rotation center of the rotating base 2 and are rotatably mounted on the rotating base 2 via bearings. Taking eight rotating cylinders 41 as an example, they are evenly distributed on the rotating base 2. Three clamping members 42 are provided inside each rotating cylinder 41, circumferentially distributed along the center of the rotating cylinder 41. When the piston rod 81 is inserted into the rotating cylinder 41, the clamping members 42 tightly clamp the piston rod 81 under the action of the spring, ensuring stable clamping.

[0037] Furthermore, the top of the clamping member 42 is chamfered, which facilitates guiding the piston rod 81 into the clamping space enclosed by the clamping members 42.

[0038] In this embodiment, the loading and unloading mechanism 6 includes a gripper 61, a first linear slide 62, a first transverse frame 63, a second linear push rod 64, a lifting frame 65, a drive motor 66, and a rotating frame 67. The gripper 61 is used to hold the piston rod 81 of the nitrogen spring 8 and insert the piston rod 81 into the rotating cylinder 41 at the loading and unloading station 11 so that the clamping member 42 holds the piston rod 81.

[0039] Among them, the gripper 61 is either a pneumatic gripper 61 or an electric gripper 61. The gripper 61 includes two gripping parts 611 that can move towards and away from each other. The end face of the gripping part 611 facing each other is provided with a V-shaped groove 612 for gripping the piston rod 81. There are four grippers 61, which are circumferentially distributed along the axis of rotation 68.

[0040] In this embodiment, the first linear slide 62 is an electric slide, or a pneumatic slide; the second linear push rod 64 is a cylinder, or an electric cylinder or a hydraulic cylinder; the drive motor 66 is a stepper motor, or a servo motor; the first linear slide 62 is mounted on the frame 1; the first transverse frame 63 is mounted on the output end of the first linear slide 62; the second linear push rod 64 is mounted on the first transverse frame 63; the lifting frame 65 is connected to the output end of the second linear push rod 64; the drive motor 66 is mounted on the lifting frame 65; the rotating frame 67 is rotatably connected to the lifting frame 65; a rotating shaft 68 is fixed on the lifting frame 65; the drive motor 66 is connected to the rotating shaft 68 and can drive the rotating shaft 68 to rotate a preset angle; and the gripper 61 is mounted on the lifting frame 65.

[0041] Specifically, the first linear slide 62 is mounted on the frame 1 and extends horizontally. The first transverse frame 63 can move horizontally under the drive of the first linear slide 62. The second linear push rod 64 is arranged vertically, and the lifting frame 65 can be raised and lowered vertically under the drive of the second linear push rod 64. The drive motor 66 can drive the rotating shaft 68 to rotate by a preset angle, thereby driving the rotating frame 67 and the gripper 61 to rotate.

[0042] During loading, the loading / unloading mechanism 6 moves above the nitrogen spring 8 to be painted via the first linear slide 62 and the first transverse frame 63. The second linear push rod 64 drives the lifting frame 65 to descend, and the V-groove of the gripper 61 clamps the piston rod 81. Then, it rises and moves to the loading / unloading station 11, inserting the piston rod 81 into the rotating cylinder 41, so that the clamping member 42 clamps the piston rod 81. During unloading, the gripper 61 moves to the nitrogen spring 8 after painting, clamps the piston rod 81, and removes it.

[0043] In this embodiment, the pushing mechanism 7 is used to drive the piston rod 81 to descend so that the lower end face 821 of the cylinder 82 of the nitrogen spring 8 contacts the top of the rotating cylinder 41, and to drive the piston rod 81 to rise so that there is a distance between the end face of the cylinder 82 of the nitrogen spring 8 facing the piston and the top of the rotating cylinder 41 for the gripper 61 to move and thus clamp the piston rod 81.

[0044] Specifically, the feeding mechanism 7 includes a first linear push rod 71 and an electromagnet 72. The first linear push rod 71 is selected as a cylinder, but it can also be an electric cylinder or a hydraulic cylinder. The first linear push rod 71 is mounted on the frame 1. The electromagnet 72 is connected to the output end of the first linear push rod 71. The electromagnet 72 can enter the interior of the rotating cylinder 41 from the bottom of the rotating cylinder 41 and magnetically engage with the piston rod 81 of the nitrogen spring 8.

[0045] It should be noted that the first linear push rod 71 is set vertically. When the piston rod 81 needs to be driven to descend, the first linear push rod 71 drives the electromagnet 72 to enter the rotating cylinder 41 from the bottom. After the electromagnet 72 is energized, it magnetically engages with the piston rod 81, pulling the piston rod 81 down and causing the nitrogen spring 8 to descend as a whole. The lower end face 821 of the cylinder 82 contacts the flange at the top of the rotating cylinder 41, preventing paint mist from contacting the piston rod 81. After painting is completed, the first linear push rod 71 drives the electromagnet 72 to rise. After the electromagnet 72 contacts the piston rod 81, it is pushed upward a certain distance, but it will not completely detach from the clamping member 42 and will still be clamped by the clamping member 42. Finally, a gap is formed between the lower end face 821 of the cylinder 82 and the top of the rotating cylinder 41 for the clamping claw 61 to move, facilitating the clamping claw 61 to clamp the piston rod 81. In this embodiment, the applicable piston rod 81 must be made of ferromagnetic material. If the material is not ferromagnetic, then electromagnet 72 needs to be replaced with a power gripper.

[0046] In this embodiment, the rotation drive device 5 is used to drive the rotating cylinder 41 at the painting station 12 to rotate; the rotation drive device 5 includes a second linear slide 51, a mounting plate 52, and a rack 53. The second linear slide 51 is mounted on the frame 1, the mounting plate 52 is mounted on the output end of the second linear slide 51, and the rack 53 is fixedly connected to the mounting plate 52; the clamping mechanism 4 also includes a gear 44, which is fixedly mounted on the lower part of the rotating cylinder 41 and located below the rotating seat 2. The second linear slide 51 is used to drive the rack 53 to move linearly so that the rack 53 meshes with the gear 44 at the painting station 12.

[0047] The second linear slide 51 is set in the horizontal direction. When the nitrogen spring 8 moves to the painting station 12, the second linear slide 51 drives the rack 53 to move linearly, so that the rack 53 meshes with the gear 44 at the painting station 12. Through the transmission of the rack 53 and the gear 44, the self-rotating drum 41 is driven to rotate, thereby driving the nitrogen spring 8 to rotate, which facilitates the uniform spraying of paint by the painting equipment.

[0048] The second linear slide 51 is an electric slide, which can control the speed at which the drive mounting plate 52 moves, thereby controlling the rotational speed of the gear 44.

[0049] In some embodiments, please refer to Figures 5 to 7 To facilitate painting the lower end of the cylinder 82, a flange 411 is provided at the top of the rotating cylinder 41. The flange 411 is used to contact and engage with the lower end face 821 of the cylinder 82 to prevent paint mist from contacting the piston rod 81. This creates a gap between the lower end face 821 of the cylinder 82 and the rotating cylinder 41, the same height as the flange 411, allowing paint mist to contact the upper end face of the cylinder 82. The lower end face 821 of the cylinder 82 refers to the end face of the cylinder 82 facing the free end of the piston rod 81.

[0050] In some embodiments, since some nitrogen springs 8 are also provided with a protruding part 83 protruding from the lower end face 821 of the cylinder body 82, such as a sealing cover or guide sleeve, in order to prevent the protruding part 83 from contacting the upper end face of the clamping part 611, which would prevent the lower end face 821 of the cylinder body 82 from contacting the clamping part 611, and thus cause the nitrogen spring 8 to be unable to remain stable when placed on the upper end face of the clamping part 611 without being clamped, please refer to [link to relevant documentation]. Figure 1 and Figure 9 The clamping part 611 is provided with a relief groove 613 at its upper end for accommodating a protruding part 83 that protrudes from the lower end face 821 of the cylinder body 82. After the protruding part 83 is accommodated in the relief groove 613, the upper end face of the cylinder body 82 can abut against the upper end face of the clamping part 611 to ensure reliable clamping.

[0051] In some embodiments, to improve the clamping stability of the clamping member 42 and prevent the clamping member 42 from wobbling up and down, please refer to... Figures 5 to 8 The clamping mechanism 4 also includes guide rods 45. Two guide rods 45 are fixed on the clamping member 42. The guide rods 45 are slidably connected to the rotating cylinder 41. One end of the guide rod 45 extends out of the rotating cylinder 41 and is fitted with a limiting member 46. The elastic member 43 is a compression spring, which is fitted onto the guide rod 45. The limiting member 46 is installed at the end of the guide rod 45 that extends out of the rotating cylinder 41, which can prevent the clamping member 42 from disengaging from the rotating cylinder 41.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. An automatic conveying device based on nitrogen spring production, characterized in that, The system includes a frame (1), a turnover seat (2), a turnover drive device (3), a clamping mechanism (4), a rotation drive device (5), a loading and unloading mechanism (6), and a pushing mechanism (7). The turnover seat (2) is driven to rotate by the turnover drive device (3). The clamping mechanism (4) includes a rotating cylinder (41), a clamping member (42), and an elastic member (43). The rotating cylinder (41) is rotatably mounted on the turnover seat (2). The clamping member (42) is located inside the rotating cylinder (41) and is connected to the rotating cylinder (41) through the elastic member (43). The clamping member (42) is circumferentially distributed along the center of the rotating cylinder (41). The loading and unloading mechanism (6) includes a gripper (61) for clamping nitrogen springs. 8) The piston rod (81) is inserted into the rotating cylinder (41) at the loading and unloading station (11) so that the clamping member (42) clamps the piston rod (81); the rotation drive device (5) is used to drive the rotating cylinder (41) at the painting station (12) to rotate; the pushing mechanism (7) is used to drive the piston rod (81) to descend so that the lower end face (821) of the cylinder (82) of the nitrogen spring (8) contacts the top of the rotating cylinder (41), and to drive the piston rod (81) to rise so that there is a distance between the lower end face (821) of the cylinder (82) of the nitrogen spring (8) and the top of the rotating cylinder (41) for the clamping claw (61) to move and clamp the piston rod (81).

2. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The feeding mechanism (7) includes a first linear push rod (71) and an electromagnet (72). The first linear push rod (71) is mounted on the frame (1). The electromagnet (72) is connected to the output end of the first linear push rod (71). The electromagnet (72) can enter the interior of the rotating cylinder (41) from the bottom of the rotating cylinder (41) and magnetically engage with the piston rod (81) of the nitrogen spring (8).

3. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The loading and unloading mechanism (6) further includes a first linear slide (62), a first transverse frame (63), a second linear push rod (64), a lifting frame (65), a drive motor (66), and a rotating frame (67). The first linear slide (62) is mounted on the frame (1), the first transverse frame (63) is mounted on the output end of the first linear slide (62), the second linear push rod (64) is mounted on the first transverse frame (63), the lifting frame (65) is connected to the output end of the second linear push rod (64), the drive motor (66) is mounted on the lifting frame (65), the rotating frame (67) is rotatably connected to the lifting frame (65), a rotating shaft (68) is fixed on the lifting frame (65), the drive motor (66) is connected to the rotating shaft (68) and can drive the rotating shaft (68) to rotate a preset angle, and the gripper (61) is mounted on the lifting frame (65).

4. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The top of the rotating cylinder (41) is provided with a flange (411), which is used to contact and cooperate with the lower end face (821) of the cylinder (82) to prevent paint mist from contacting the piston rod (81).

5. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The gripper (61) includes two gripping parts (611) that can move towards and away from each other. The gripping parts (611) have a V-shaped groove (612) on the opposite end face for gripping the piston rod (81).

6. The automatic conveying device based on nitrogen spring production according to claim 5, characterized in that, The upper end of the clamping part (611) is provided with a relief groove (613) for accommodating the protruding part (83) protruding from the lower end face (821) of the cylinder body (82), so that the upper end face of the cylinder body (82) abuts against the upper end face of the clamping part (611); the relief groove (613) is connected to the V-shaped groove (612).

7. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The self-rotation drive device (5) includes a second linear slide (51), a mounting plate (52), and a rack (53). The second linear slide (51) is mounted on the frame (1), the mounting plate (52) is mounted on the output end of the second linear slide (51), and the rack (53) is fixedly connected to the mounting plate (52). The clamping mechanism (4) also includes a gear (44), which is fixedly mounted on the lower part of the rotating cylinder (41). The gear (44) is located below the rotating seat (2). The second linear slide (51) is used to drive the rack (53) to move linearly so that the rack (53) meshes with the gear (44) at the painting station (12).

8. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, Multiple rotating cylinders (41) are provided, and the rotating cylinders (41) are distributed in a circle around the rotation center of the rotating seat (2).

9. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The turnover drive device (3) is a hollow rotary table. The turnover drive device (3) is installed on the frame (1), and the turnover seat (2) is installed on the turnover drive device (3).

10. The automatic conveying device based on nitrogen spring production according to claim 1, characterized in that, The clamping mechanism (4) also includes a guide rod (45). At least two guide rods (45) are fixed on the clamping member (42). The guide rod (45) is slidably connected to the rotating cylinder (41). One end of the guide rod (45) extends out of the rotating cylinder (41) and is fitted with a limiting member (46).

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