Full-automatic nitrogen inflator for damper assembly line

Abstract

The invention discloses a full-automatic nitrogen inflator for a shock absorber assembly line, and relates to the technical field of shock absorber manufacturing, the full-automatic nitrogen inflator comprises an electric cylinder, a working cabinet and a shock absorber body, the electric cylinder and the shock absorber body are both located at the top of the working cabinet, and two pairs of guide columns are fixedly connected to the top end of the working cabinet; an inflation mold lifting plate is arranged between the outer walls of the pair of guide columns in a sleeved mode, and the bottoms of the pair of inflation mold lifting plates are fixedly connected with a nitrogen inflation assembly. The tray assembly is driven by the conveying line body to conduct automatic conveying, automatic feeding, positioning and clamping of the shock absorber body are achieved in cooperation with in-place detection of the laser sensor, manual contact is not needed in the whole process, and the pollution risk is reduced; the nitrogen filling assembly is driven by the downward moving mechanism to move downwards to be close to the shock absorber body and accurately correspond to the shock absorber body, the oil cylinder extends out to press the sealing block to be matched with the rebound of the compression spring to press the inflation needle to form a more reliable closed cavity, the influence of the external environment is isolated through double sealing, and the influence of the external environment on the nitrogen purity is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of shock absorber manufacturing, and in particular relates to a fully automatic nitrogen inflator for a shock absorber assembly line. Background Art

[0002] The fully automatic nitrogen inflator for the shock absorber assembly line is a key equipment specially used in shock absorber production. Its main function is to charge nitrogen into the shock absorber at a precise pressure, providing efficient and precise nitrogen charging service for the shock absorber, thereby ensuring the stable and reliable performance of the shock absorber.

[0003] For example, a shock absorber inflation device is proposed with publication number CN119712768A, which includes a loading seat, an inflation platform and a pressure detection mechanism. The present invention forms a sealed inflation chamber on the outer periphery of the shock absorber through the inflation platform, and forms a gap between the oil seal and the piston rod of the shock absorber through a piercing head for subsequently establishing a gas channel. As the amount of gas filled into the inflation chamber increases, the gap between the oil seal and the piston rod is gradually expanded until a gas channel connecting the inflation chamber and the inside of the sleeve is formed, thereby inflating the sleeve. The present invention can automatically inflate the shock absorber, and the inflation efficiency is relatively high. Moreover, the present invention can accurately detect the air pressure inside the sleeve through a pressure sensor to accurately understand the inflation effect, thereby ensuring that a sufficient amount of nitrogen is filled into the shock absorber while avoiding damage to the shock absorber due to excessive filling of gas.

[0004] The above patent has the following defects during use:

[0005] The shock absorber needs to be fixed to the mounting seat by bolts. When the bolts need to be rotated and fixed manually, it is easy to introduce pollutants such as hand grease and dust, which will affect the product yield. In addition, during the inflation process, the inflation chamber only relies on the sealing ring to isolate the external environment. If the ambient humidity is high or contains impurities, they may penetrate into the inflation chamber through the gap of the sealing ring and pollute the nitrogen purity, making the nitrogen purity greatly affected by environmental factors. At the same time, the inflation pressure is indirectly judged by detecting the piston rod thrust through the pressure sensor. If the air pressure in the inflation chamber fluctuates or the sealing ring leaks slightly, it may cause the pressure sensor detection value to deviate from the actual pressure in the sleeve, affecting the product quality. It affects the inflation accuracy, and forms a sealed inflation chamber on the periphery of the shock absorber through the inflation table, and forms a gap for establishing a gas channel later between the oil seal and the piston rod of the shock absorber through the breaker head. If the sealing ring fails or the breaker head is not inserted into place, it is necessary to reversely infer leakage through the abnormal pressure sensor after inflation, resulting in a high rework rate and reduced efficiency. At the same time, it also lacks the ability to trace the inflation process data. If a batch of defective products occurs, it is difficult to trace the specific inflation parameters or fault links, which affects the nitrogen inflation effect of the shock absorber. For this reason, the present invention proposes a fully automatic nitrogen inflator for a shock absorber assembly line. Summary of the Invention

[0006] The present invention provides a fully automatic nitrogen inflator for a shock absorber assembly line, which drives the tray assembly to be automatically conveyed through a conveyor line body, and then cooperates with the in-position detection of a laser sensor to realize automatic loading, positioning and clamping of the shock absorber body, without manual contact in the whole process, thereby reducing the risk of pollution; the nitrogen filling assembly is driven to move down close to the shock absorber body by a downward movement mechanism, and precisely corresponds to it, and with the help of an oil cylinder to extend and tighten the sealing block, the compression spring rebounds and tightens the inflation needle to form a more reliable closed cavity, thereby isolating the influence of the external environment through double sealing, so that the purity of nitrogen is not easily affected by the external environment; the pressure sensor in the contact monitoring mechanism monitors the extension force of the connecting rod of the shock absorber body in real time, and compares it with the preset pressure value to form a closed loop Control, when the pressure reaches the set pressure value, inflation is stopped immediately to reduce pressure deviation and ensure its inflation accuracy; the proximity sensor detects the oil cylinder extended into place signal to ensure that the sealing block is pressed tightly before triggering the inflation needle to penetrate, thereby realizing the timing linkage between the sealing detection and the inflation process, avoiding invalid inflation and ensuring its inflation efficiency, and through the data collection and storage of laser sensors, proximity sensors and pressure sensors, the key parameter data in the process from the transportation and positioning of the shock absorber body to the close fit between the sealing block and the surface of the shock absorber body and then to the shock absorber body inflation pressure monitoring are recorded, so as to be used for subsequent quality tracing and process optimization, thereby ensuring the nitrogen inflation effect, and thus solving the problems in the background technology.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A fully automatic nitrogen inflator for a shock absorber assembly line according to the present invention comprises:

[0009] An electric cylinder, a work counter, and a shock absorber body, wherein the electric cylinder and the shock absorber body are both located on the top of the work counter. Two pairs of guide columns are fixedly connected to the top of the work counter, and an inflatable mold lifting plate is sleeved between the outer walls of a pair of guide columns. A nitrogen filling assembly is fixedly connected to the bottom of a pair of inflatable mold lifting plates, and the nitrogen filling assembly is used for filling nitrogen;

[0010] A downward movement mechanism, which is arranged on the top of the inflation mold lifting plate and is used to lower the nitrogen inflation assembly;

[0011] A contact monitoring mechanism, which is arranged at the bottom of the electric cylinder and is used to monitor the extension force of the connecting rod of the shock absorber body;

[0012] Among them, the nitrogen charging assembly includes port A, port B, nitrogen port, cylinder rod, cylinder rod follower plate, compression spring, telescopic tongue, sealing block and inflation needle, the port A is located at the top of port B, and port B is located at the top of the nitrogen port, one end of the cylinder rod is connected to the cylinder rod follower plate, and the other end of the cylinder rod corresponds to port A and port B respectively, the compression spring is sleeved on the outside of the telescopic tongue, one end of the compression spring supports the cylinder rod follower plate, and the other end of the compression spring supports the limiting boss of the telescopic tongue, one end of the telescopic tongue is fixedly connected to one end of the inflation needle, and the sealing block is located on the outside of the inflation needle.

[0013] Furthermore, a pair of oil cylinders are fixedly connected to the bottom end of the inflatable mold lifting plate, and the output ends of the oil cylinders are fixedly connected to the outer wall of the nitrogen filling assembly, and a pair of proximity sensors are fixedly connected to the top ends of the pair of inflatable mold lifting plates.

[0014] Furthermore, the top of the work counter is fixedly connected to a conveyor line body, and the top of the conveyor line body is fixedly connected to a tray assembly, and the shock absorber body is fixed on the tray assembly.

[0015] Furthermore, a laser sensor is fixedly connected to one side of the conveyor line body, and the laser sensor is located on one side of the shock absorber body.

[0016] Furthermore, the downward movement mechanism includes an elevator mounting plate sleeved between the outer walls of two pairs of guide columns, a pair of commutators are fixedly connected to the top of the elevator mounting plate, and a coupling is fixedly connected between the pair of commutators, the commutator located on one side is fixedly connected to the motor, a screw bearing mounting plate is sleeved between the outer walls of a pair of guide columns, and a precision screw is fixedly connected between the commutator and the screw bearing mounting plate, the outer wall of the precision screw is threadedly connected to the electric cylinder ball nut mounting plate, and the electric cylinder ball nut mounting plate is sleeved on the outer walls of the two pairs of guide columns, and a connecting plate is fixedly connected between the bottom end of the electric cylinder ball nut mounting plate and the top of a pair of inflatable mold lifting plates.

[0017] Furthermore, a pair of linear bearings are sleeved on the outer walls of the two pairs of guide columns, the four linear bearings located at the top are embedded and connected to the electric cylinder ball nut mounting plate, and the four linear bearings located at the bottom are respectively embedded and connected to a pair of inflatable mold lifting plates.

[0018] Furthermore, the contact monitoring mechanism includes a floating joint assembly, the electric cylinder is located at the top of the floating joint assembly, the outer wall of the floating joint assembly is fixedly connected to a pressure sensor connecting plate, and the bottom end of the pressure sensor connecting plate is fixedly connected to a pressure sensor, the outer wall of the pressure sensor is fixedly connected to a quick-change pressure head, and the quick-change pressure head is located at the top of the shock absorber body connecting rod.

[0019] Furthermore, a drag chain is fixedly connected to a side of the connecting plate located on one side close to the pressure sensor connecting plate, and one end of the drag chain is fixedly connected to the top end of the pressure sensor connecting plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This technical solution uses a conveyor line to drive the automatic conveying of the pallet assembly, and then cooperates with the in-place detection of the laser sensor to realize the automatic loading, positioning and clamping of the shock absorber body. No manual contact is required throughout the process, reducing the risk of contamination.

[0022] 2. This technical solution uses a downward movement mechanism to drive the nitrogen filling assembly to move down close to the shock absorber body, precisely corresponding to it, and uses the oil cylinder to extend the compression sealing block and cooperate with the compression spring to rebound and compress the inflation needle to form a more reliable closed cavity, thereby isolating the influence of the external environment through double sealing, making the nitrogen purity less susceptible to the influence of the external environment.

[0023] 3. This technical solution monitors the extension force of the shock absorber body connecting rod in real time through the pressure sensor in the contact monitoring mechanism, and compares it with the preset pressure value to form a closed-loop control. When the pressure reaches the set pressure value, inflation is stopped immediately to reduce pressure deviation and ensure its inflation accuracy.

[0024] 4. This technical solution detects the cylinder extension signal through a proximity sensor, ensuring that the sealing block is tightened before triggering the inflation needle to penetrate, realizing the timing linkage between the sealing detection and the inflation process, avoiding invalid inflation, and ensuring its inflation efficiency. In addition, through the data collection and storage of laser sensors, proximity sensors and pressure sensors, the key parameter data in the process from the transportation and positioning of the shock absorber body to the close fit between the sealing block and the surface of the shock absorber body and then to the shock absorber body inflation pressure monitoring are recorded, so as to facilitate subsequent quality traceability and process optimization, thereby ensuring the nitrogen inflation effect.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of a fully automatic nitrogen inflator for a shock absorber assembly line according to the present invention;

[0028] Figure 2This is a front structural schematic diagram of a fully automatic nitrogen inflator for a shock absorber assembly line according to the present invention;

[0029] Figure 3 This is a side structural schematic diagram of a fully automatic nitrogen inflator for a shock absorber assembly line according to the present invention;

[0030] Figure 4 Schematic diagram of the three-dimensional structure of the nitrogen filling assembly in the present invention;

[0031] Figure 5 Schematic diagram of the front structure of the nitrogen filling assembly of the present invention;

[0032] Figure 6 Schematic diagram of the side structure of the nitrogen filling assembly of the present invention;

[0033] Figure 7 Schematic diagram of the front cross-sectional structure of the nitrogen filling assembly of the present invention;

[0034] Figure 8 It is a schematic side cross-sectional structural diagram of the nitrogen filling assembly in the present invention.

[0035] In the accompanying drawings, the components represented by each symbol are listed as follows:

[0036] 1. Electric cylinder; 2. Lifter mounting plate; 3. Precision screw; 4. Electric cylinder ball nut mounting plate; 5. Connecting plate; 6. Inflatable mold lifting plate; 7. Linear bearing; 8. Guide column; 9. Conveyor line; 10. Proximity sensor; 11. Drag chain; 12. Motor; 13. Commutator; 14. Coupling; 15. Floating joint assembly; 16. Screw bearing mounting plate; 17. Pressure sensor connecting plate; 18. Pressure sensor; 19. Quick-change pressure head; 20. Cylinder; 21. Shock absorber body; 22. Laser sensor; 23. Tray assembly; 24. Nitrogen filling assembly; 25. Port A; 26. Port B; 27. Nitrogen port; 28. Cylinder rod; 29. Cylinder rod follower plate; 30. Compression spring; 31. Telescopic tongue; 32. Sealing block; 33. Inflating needle; 34. Work counter. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. Specific embodiment:

[0040] See also Figures 1-8 As shown, the present invention provides a fully automatic nitrogen inflator for a shock absorber assembly line, comprising:

[0041] The electric cylinder 1, the work counter 34, and the shock absorber body 21 are all located on top of the work counter 34. Two pairs of guide columns 8 are fixedly connected to the top of the work counter 34. An inflatable mold lifting plate 6 is sleeved between the outer walls of the pair of guide columns 8. A nitrogen filling assembly 24 is fixedly connected to the bottom of the pair of inflatable mold lifting plates 6, and the nitrogen filling assembly 24 is used for filling nitrogen.

[0042] A downward movement mechanism is provided on the top of the inflation mold lifting plate 6 and is used to lower the nitrogen filling assembly 24;

[0043] The contact monitoring mechanism is provided at the bottom of the electric cylinder 1 and is used to monitor the extension force of the connecting rod of the shock absorber body 21;

[0044] Among them, the nitrogen charging assembly 24 includes an A port 25, a B port 26, a nitrogen port 27, a cylinder rod 28, a cylinder rod follower plate 29, a compression spring 30, a telescopic tongue 31, a sealing block 32 and an inflation needle 33. The A port 25 is located at the top of the B port 26, and the B port 26 is located at the top of the nitrogen port 27. One end of the cylinder rod 28 is connected to the cylinder rod follower plate 29, and the other end of the cylinder rod 28 corresponds to the A port 25 and the B port 26 respectively. The compression spring 30 is sleeved on the outside of the telescopic tongue 31. One end of the compression spring 30 supports the cylinder rod follower plate 29, and the other end of the compression spring 30 supports the limiting boss of the telescopic tongue 31. One end of the telescopic tongue 31 is fixedly connected to one end of the inflation needle 33, and the sealing block 32 is located on the outside of the inflation needle 33.

[0045] During the specific implementation process, after the shock absorber body 21 flows into the automatic nitrogen filling equipment station through the conveyor line 9, the laser sensor 22 detects that it is in place, and the motor 12 starts to rotate. After the motor 12 rotates, it drives the precision screw 3 to rotate through the commutator 13 and the coupling 14. The rotation of the precision screw 3 provides downward power for the electric cylinder ball nut mounting plate 4, and the connecting plate 5 is a plate connected between the electric cylinder ball nut mounting plate 4 and the inflation mold lifting plate 6, so when the electric cylinder ball nut mounting plate 4 moves downward, the inflation mold lifting plate 6 also moves downward synchronously, and the nitrogen filling component 24 is connected to the inflation mold lifting plate 6, so the nitrogen filling component 24 will also move downward synchronously. When the nitrogen filling After the nitrogen filling assembly 24 drops to the set position, the guide rod of the electric cylinder 1 extends to drive the floating joint assembly 15, the pressure sensor connecting plate 17, the pressure sensor 18 and the quick-change pressure head 19 to drop to the end face of the connecting rod of the shock absorber body 21, and then the oil cylinders 20 on both sides extend to fasten the nitrogen filling assembly 24 to the set nitrogen filling position. The nitrogen filling assembly 24 includes: A port 25, B port 26, nitrogen port 27, cylinder rod 28, cylinder rod follower plate 29, compression spring 30, telescopic tongue 31, sealing block 32, and inflation needle 33. When the nitrogen filling assemblies 24 on both sides are extended and fastened through the oil cylinder 20, the internal sealing blocks 32 of the nitrogen filling assemblies 24 on both sides are compressed to form a tight seal. The closed nitrogen sealed chamber, while the nitrogen filling components 24 on both sides are fastened, the rebound force of the compression spring 30 after being compressed drives the telescopic tongue 31 to press the inflation needle 33 on the connecting rod of the shock absorber body 21. When the proximity sensor 10 detects that the oil cylinder 20 is extended, the A port 25 intakes air, and the cylinder rod 28 drives the cylinder rod follower plate 29, the telescopic tongue 31 and the inflation needle 33 downward. At the same time, the inflation needle 33 extends along the connecting rod of the shock absorber body 21 and is inserted into the interior of the shock absorber body 21. After the nitrogen enters the sealed nitrogen sealed chamber formed by the compression of the sealing block 32 through the nitrogen port 27, the nitrogen will enter the interior of the cylinder of the shock absorber body 21 through the inflation needle 33. When the shock absorber After nitrogen enters the cylinder of the body 21, the connecting rod of the shock absorber body 21 extends, and the force of the extending connecting rod is transmitted to the pressure sensor 18 through the quick-change pressure head 19. When the force of the extending connecting rod of the shock absorber body 21 reaches the pressure value set by the pressure sensor 18, the nitrogen filling is completed, and the data of the laser sensor 22, the proximity sensor 10 and the pressure sensor 18 are collected and stored to record the key parameter data in the process from the conveying and positioning of the shock absorber body 21 to the close fit between the sealing block 32 and the surface of the shock absorber body 21 and then to the inflation pressure monitoring of the shock absorber body 21, so as to facilitate subsequent quality traceability and process optimization, thereby ensuring the nitrogen inflation effect.

[0046] Among them, the bottom end of the inflation mold lifting plate 6 is fixedly connected to a pair of oil cylinders 20, and the output end of the oil cylinder 20 is fixedly connected to the outer wall of the nitrogen filling component 24, and the top end of the pair of inflation mold lifting plates 6 is fixedly connected to a pair of proximity sensors 10.

[0047] A pair of oil cylinders 20 push the nitrogen charging assembly 24 toward the center of the shock absorber body 21 until it reaches the preset nitrogen charging position. The sealing blocks 32 on both sides are pressed tightly against the cover under the thrust of the oil cylinder 20 to form a closed nitrogen sealing chamber. The sealed chamber covers the target inflation area between the connecting rod and the sleeve of the shock absorber body 21. The proximity sensor 10 is used to detect whether the oil cylinder 20 is fully extended to the set position to ensure that the sealing block 32 of the nitrogen charging assembly 24 is in close contact with the surface of the shock absorber body 21.

[0048] The top of the work counter 34 is fixedly connected to the conveyor line body 9 , and the top of the conveyor line body 9 is fixedly connected to the tray assembly 23 , and the shock absorber body 21 is fixed on the tray assembly 23 .

[0049] The conveyor line 9 drives the tray assembly 23 to be automatically conveyed, so as to realize automatic loading, positioning and clamping of the shock absorber body 21, without manual contact in the whole process, thus reducing the risk of contamination.

[0050] A laser sensor 22 is fixedly connected to one side of the conveyor line 9 , and the laser sensor 22 is located on one side of the shock absorber body 21 .

[0051] The laser sensor 22 detects whether the shock absorber body 21 has accurately reached the nitrogen filling station through the conveying line 9 by emitting a laser beam and receiving a reflected signal.

[0052] Among them, the downward movement mechanism includes an elevator mounting plate 2 which is sleeved between the outer walls of two pairs of guide columns 8, a pair of commutators 13 are fixedly connected to the top of the elevator mounting plate 2, and a coupling 14 is fixedly connected between the pair of commutators 13, the commutator 13 located on one side is fixedly connected to the motor 12, a screw bearing mounting plate 16 is sleeved between the outer walls of a pair of guide columns 8, and a precision screw 3 is fixedly connected between the commutator 13 and the screw bearing mounting plate 16, the outer wall of the precision screw 3 is threadedly connected to the electric cylinder ball nut mounting plate 4, and the electric cylinder ball nut mounting plate 4 is sleeved on the outer walls of the two pairs of guide columns 8, and a connecting plate 5 is fixedly connected between the bottom end of the electric cylinder ball nut mounting plate 4 and the top of a pair of inflatable mold lifting plates 6.

[0053] After the motor 12 rotates, it drives the precision screw 3 to rotate through the commutator 13 and the coupling 14. The rotation of the precision screw 3 provides downward power for the electric cylinder ball nut mounting plate 4. The electric cylinder ball nut mounting plate 4 drives the inflation mold lifting plate 6 to move downward through the connecting plate 5, so that the inflation mold lifting plate 6 drives the nitrogen filling assembly 24 to descend synchronously until it descends to the set position to facilitate subsequent inflation docking.

[0054] Among them, a pair of linear bearings 7 are sleeved on the outer walls of the two pairs of guide columns 8. The four linear bearings 7 at the top are embedded and connected to the electric cylinder ball nut mounting plate 4, and the four linear bearings 7 at the bottom are respectively embedded and connected to a pair of inflatable mold lifting plates 6.

[0055] The linear bearing 7 is used in conjunction with the guide column 8 to guide the movement of the electric cylinder ball nut mounting plate 4 and the inflatable mold lifting plate 6.

[0056] Among them, the contact monitoring mechanism includes a floating joint assembly 15, the electric cylinder 1 is located at the top of the floating joint assembly 15, the outer wall of the floating joint assembly 15 is fixedly connected to the pressure sensor connecting plate 17, and the bottom end of the pressure sensor connecting plate 17 is fixedly connected to the pressure sensor 18, the outer wall of the pressure sensor 18 is fixedly connected to the quick-change pressure head 19, and the quick-change pressure head 19 is located at the top of the connecting rod of the shock absorber body 21.

[0057] When the nitrogen filling assembly 24 descends to the set position, the guide rod of the electric cylinder 1 extends to drive the floating joint assembly 15, the pressure sensor connecting plate 17, the pressure sensor 18 and the quick-change pressure head 19 to descend to the end face of the connecting rod of the shock absorber body 21, so that when nitrogen enters the cylinder of the shock absorber body 21, the connecting rod of the shock absorber body 21 extends, and the force of the connecting rod extension is transmitted to the pressure sensor 18 through the quick-change pressure head 19. When the force of the connecting rod extension of the shock absorber body 21 reaches the pressure value set by the pressure sensor 18, the nitrogen filling is completed.

[0058] A drag chain 11 is fixedly connected to one side of the connecting plate 5 close to the pressure sensor connecting plate 17 , and one end of the drag chain 11 is fixedly connected to the top of the pressure sensor connecting plate 17 .

[0059] The drag chain 11 protects the power lines, signal lines and air pipes of the electric cylinder 1, the pressure sensor 18, the quick-change pressure head 19 and other components, so that they are not easily damaged by contact friction during movement.

[0060] The circuits, electronic components and chip modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0061] The standard parts used in the application documents can all be purchased on the market. All components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The electrical components appearing in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0062] The working principle of the present invention is:

[0063] When the present invention is in use, after the shock absorber body 21 flows into the automatic nitrogen filling equipment station through the conveying line body 9, the laser sensor 22 detects that it is in place, and the motor 12 starts to rotate. After the motor 12 rotates, it drives the precision screw 3 to rotate through the commutator 13 and the coupling 14. The rotation of the precision screw 3 provides downward power for the electric cylinder ball nut mounting plate 4, and the connecting plate 5 is a plate connected between the electric cylinder ball nut mounting plate 4 and the inflation mold lifting plate 6, so when the electric cylinder ball nut mounting plate 4 moves downward, the inflation mold lifting plate 6 also moves downward synchronously, and the nitrogen filling assembly 24 and The inflatable mold lifting plate 6 is connected, so the nitrogen filling assembly 24 will also drop synchronously. When the nitrogen filling assembly 24 drops to the set position, the guide rod of the electric cylinder 1 extends to drive the floating joint assembly 15, the pressure sensor connecting plate 17, the pressure sensor 18 and the quick-change pressure head 19 to drop to the end face of the connecting rod of the shock absorber body 21, and then the oil cylinders 20 on both sides extend to buckle the nitrogen filling assembly 24 at the set nitrogen filling position. The nitrogen filling assembly 24 includes: A port 25, B port 26, nitrogen port 27, cylinder rod 28, cylinder rod follower plate 29, compression spring 30, The telescopic tongue 31, the sealing block 32, and the inflation needle 33, when the nitrogen filling components 24 on both sides are extended and fastened through the oil cylinder 20, the internal sealing blocks 32 of the nitrogen filling components 24 on both sides are compressed to form a closed nitrogen sealing chamber. When the nitrogen filling components 24 on both sides are fastened, the rebound force of the compression spring 30 after being compressed drives the telescopic tongue 31 to press the inflation needle 33 onto the connecting rod of the shock absorber body 21. When the proximity sensor 10 detects that the oil cylinder 20 is extended, the A port 25 is inlet, and the cylinder rod 28 drives the cylinder rod follower plate 29, the telescopic tongue 31 and the inflation needle 33 downward, toward At the same time, the inflation needle 33 is inserted into the shock absorber body 21 along the connecting rod of the shock absorber body 21. After the nitrogen enters the sealing block 32 through the nitrogen port 27 and is compressed to form a closed nitrogen sealing chamber, the nitrogen will enter the cylinder of the shock absorber body 21 through the inflation needle 33. When nitrogen enters the cylinder of the shock absorber body 21, the connecting rod of the shock absorber body 21 extends, and the force of the extending connecting rod is transmitted to the pressure sensor 18 through the quick-change pressure head 19. When the force of the extending connecting rod of the shock absorber body 21 reaches the pressure value set by the pressure sensor 18, the nitrogen filling is completed.

[0064] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fully automatic nitrogen inflator for a shock absorber assembly line, characterized in that: include: An electric cylinder (1), a work counter (34) and a shock absorber body (21), wherein the electric cylinder (1) and the shock absorber body (21) are both located on the top of the work counter (34), two pairs of guide columns (8) are fixedly connected to the top of the work counter (34), and an inflatable mold lifting plate (6) is sleeved between the outer walls of the pair of guide columns (8), and a nitrogen filling assembly (24) is fixedly connected to the bottom of the pair of inflatable mold lifting plates (6), and the nitrogen filling assembly (24) is used for filling nitrogen; A downward movement mechanism, the downward movement mechanism being arranged on the top of the inflation mold lifting plate (6), and being used for lowering the nitrogen inflation assembly (24); A contact monitoring mechanism, the contact monitoring mechanism being arranged at the bottom of the electric cylinder (1) and being used for monitoring the extension force of the connecting rod of the shock absorber body (21); The nitrogen filling assembly (24) comprises an A port (25), a B port (26), a nitrogen port (27), a cylinder rod (28), a cylinder rod follower plate (29), a compression spring (30), a telescopic tongue (31), a sealing block (32) and an inflation needle (33), wherein the A port (25) is located at the top of the B port (26), and the B port (26) is located at the top of the nitrogen port (27), and one end of the cylinder rod (28) is connected to the cylinder rod follower plate (29). The other end of the cylinder rod (28) corresponds to the A port (25) and the B port (26) respectively. The compression spring (30) is sleeved on the outside of the telescopic tongue (31). One end of the compression spring (30) presses against the cylinder rod follower plate (29), and the other end of the compression spring (30) presses against the limiting boss of the telescopic tongue (31). One end of the telescopic tongue (31) is fixedly connected to one end of the inflation needle (33), and the sealing block (32) is located on the outside of the inflation needle (33).

2. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 1, characterized in that: The bottom end of the inflatable mold lifting plate (6) is fixedly connected to a pair of oil cylinders (20), and the output end of the oil cylinder (20) is fixedly connected to the outer wall of the nitrogen filling component (24), and the top end of the pair of inflatable mold lifting plates (6) is fixedly connected to a pair of proximity sensors (10).

3. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 1, characterized in that: The top of the work counter (34) is fixedly connected to a conveyor line body (9), and the top of the conveyor line body (9) is fixedly connected to a tray assembly (23), and the shock absorber body (21) is fixed on the tray assembly (23).

4. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 3, characterized in that: A laser sensor (22) is fixedly connected to one side of the conveyor line body (9), and the laser sensor (22) is located on one side of the shock absorber body (21).

5. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 1, characterized in that: The downward movement mechanism includes an elevator mounting plate (2) sleeved between the outer walls of two pairs of guide columns (8), a pair of commutators (13) are fixedly connected to the top of the elevator mounting plate (2), and a coupling (14) is fixedly connected between the pair of commutators (13), and the commutator (13) located on one side is fixedly connected to the motor (12), a screw bearing mounting plate (16) is sleeved between the outer walls of the pair of guide columns (8), and a precision screw (3) is fixedly connected between the commutator (13) and the screw bearing mounting plate (16), the outer wall of the precision screw (3) is threadedly connected to the electric cylinder ball nut mounting plate (4), and the electric cylinder ball nut mounting plate (4) is sleeved on the outer walls of the two pairs of guide columns (8), and a connecting plate (5) is fixedly connected between the bottom end of the electric cylinder ball nut mounting plate (4) and the top end of a pair of inflatable mold lifting plates (6).

6. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 5, characterized in that: A pair of linear bearings (7) are sleeved on the outer walls of the two pairs of guide columns (8); the four linear bearings (7) at the top are embedded and connected to the electric cylinder ball nut mounting plate (4); and the four linear bearings (7) at the bottom are respectively embedded and connected to a pair of inflatable mold lifting plates (6).

7. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 1, characterized in that: The contact monitoring mechanism includes a floating joint assembly (15), the electric cylinder (1) is located at the top of the floating joint assembly (15), the outer wall of the floating joint assembly (15) is fixedly connected to a pressure sensor connecting plate (17), and the bottom end of the pressure sensor connecting plate (17) is fixedly connected to a pressure sensor (18), the outer wall of the pressure sensor (18) is fixedly connected to a quick-change pressure head (19), and the quick-change pressure head (19) is located at the top of the connecting rod of the shock absorber body (21).

8. The fully automatic nitrogen inflator for a shock absorber assembly line according to claim 7, characterized in that: A drag chain (11) is fixedly connected to one side of the connecting plate (5) located on one side close to the pressure sensor connecting plate (17), and one end of the drag chain (11) is fixedly connected to the top end of the pressure sensor connecting plate (17).

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