Nitrogen spring intelligent assembly line

Abstract

The invention discloses an intelligent assembly line for nitrogen springs. The intelligent assembly line comprises a plurality of conveying lines, and grabbing equipment, pressure detection equipment and a laser marking machine which are sequentially arranged among the conveying lines, the grabbing equipment comprises a frame body, a clamping assembly, a magnetic attraction detection assembly and a positioning detection assembly. A three-axis moving assembly is arranged in the frame body, and the clamping assembly is connected with the three-axis moving assembly. The magnetic attraction detection assembly is connected with the clamping assembly and comprises an electromagnet and a first displacement sensor, wherein the electromagnet can act on the top of the cylinder body and / or the top of the piston rod. According to the nitrogen spring assembling production line, transfer among all procedures is reduced through the nitrogen spring assembling production line, meanwhile, all mechanical equipment is combined for application, labor cost and time are saved, safety accidents are avoided to the maximum extent, and the nitrogen spring assembling production line is high in assembling efficiency and production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of nitrogen spring assembly equipment, and particularly relates to an intelligent assembly line for nitrogen springs. Background Art

[0002] A nitrogen spring is a new type of elastic functional element, mainly composed of a cylinder barrel, a piston rod, and a support ring. The basic principle is to seal high-pressure nitrogen in a container, and obtain a certain elastic force through the compression and expansion of high-pressure nitrogen. It is an upgraded product of spiral springs, rubber cushions, and air cushions. Its main characteristics are: large spring pressure, easy balance of spring pressure, easy simplification of design and shortening of the cycle, long service life, safety and reliability, simple maintenance, and no external power source device. Nitrogen springs are widely used in the automotive, mold, electronics, and light industry.

[0003] Currently, domestic nitrogen spring assembly all adopts semi-automatic assembly combining manual and mechanical methods, and manually transports the assembled parts. Therefore, during the process of assembling parts, not only labor and time are wasted, but also the assembly accuracy and quality of nitrogen springs cannot be unified, and the defective rate of products is high; at the same time, in the transfer and assembly, there are repeated operations in the connection of each process, with a relatively high labor intensity, which restricts the growth of production capacity. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an intelligent assembly line for nitrogen springs, and adopts the following technical solutions: An intelligent assembly line for nitrogen springs, including multiple conveyor lines, a grasping and loading device, a pressure detection device, and a laser marking machine sequentially arranged between the conveyor lines; The grasping and loading device includes a frame body, a clamping assembly, a magnetic adsorption detection assembly, and a positioning detection assembly; A three-axis movement assembly is arranged inside the frame body, and the clamping assembly is connected to the three-axis movement assembly; The magnetic adsorption detection assembly is connected to the clamping assembly. The magnetic adsorption detection assembly includes an electromagnet that can act on the top of the cylinder body and / or the piston rod, and a first displacement sensor. In the positioning detection assembly, there are paired positioning blocks, a detection plate arranged parallel to the upper ends of the positioning blocks, and a second displacement sensor; The pressure detection device includes a stamping mechanism, a lifting assembly, and a spraying assembly; The laser marking machine includes an operating table, and a laser emission assembly arranged on the upper end of the operating table for acting on the nitrogen spring. A lifting mechanism is connected to the side of the laser emission assembly and the upper end of the operating table, and the lifting mechanism is electrically connected to the laser emission assembly; A detection mechanism is slidably connected to the lifting mechanism. The detection mechanism has a contact rod. Under the action of the lifting mechanism, the contact rod approaches or moves away from the top end of the nitrogen spring.

[0005] Furthermore, the magnetic adsorption detection component further has a detection seat connected to the clamping component, and the electromagnet and the first displacement sensor are installed on the detection seat.

[0006] Furthermore, the positioning detection component further has a guide rail, and the positioning block is slidably arranged on the guide rail.

[0007] Furthermore, the cross section of the positioning block is V-shaped.

[0008] Furthermore, the detection mechanism further includes at least two translation mechanisms that are overlapped and have mutually perpendicular and staggered degrees of freedom.

[0009] Furthermore, the translation mechanism includes a connecting bottom plate, a sliding upper plate, and a power source for driving the sliding upper plate to move relative to the connecting bottom plate, and the contact rod is connected to the sliding upper plate.

[0010] Furthermore, a display screen and a control box are also connected to the operating table.

[0011] Furthermore, the spraying component has a plurality of spray heads communicated with an external water source, and the spray heads act on the nitrogen spring to be detected.

[0012] Furthermore, a liquid collecting container is also arranged in the pressure detection device.

[0013] Furthermore, the pressure detection device has an outer frame, and a nitrogen source and an operating table are arranged on the side of the outer frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the nitrogen spring assembly production line, the transfer between various processes is reduced. At the same time, by combining the use of various mechanical devices, the labor cost and time are saved, the assembly quality and precision of the product are improved, the assembly efficiency is high, and the production efficiency is high; 2. By setting the grasping device and driving the clamping component to move through the three-axis moving component, the cylinder bodies are transported one by one to the trays in the tray temporary storage area. This method replaces the manual assembly method of the cylinder body and the piston rod, and the efficiency is greatly improved; 3. By setting the spraying component communicated with an external water source to replace manual spraying, during the pressure detection of the nitrogen spring by the stamping mechanism, the operation efficiency and intensity are greatly improved while ensuring safety. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention; Figure 2 To show the overall structural schematic diagram of the grasping and loading device in the specific embodiment of the present invention; Figure 3 To show the partial structural schematic diagram of the grasping and loading device in the specific embodiment of the present invention; Figure 4 To show the three-dimensional structural schematic diagram of the clamping assembly in the specific embodiment of the present invention; Figure 5 To show the three-dimensional structural schematic diagram of the positioning and detecting assembly in the specific embodiment of the present invention; Figure 6 To show the overall structural schematic diagram of the pressure detecting device in the specific embodiment of the present invention; Figure 7 To show the partial structural schematic diagram of the pressure detecting device in the specific embodiment of the present invention; Figure 8 To show the three-dimensional structural schematic diagram of the nitrogen spring and the placing seat in the specific embodiment of the present invention; Figure 9 To show the three-dimensional structural schematic diagram of the laser marking machine in the specific embodiment of the present invention; Figure 10 To show the three-dimensional structural schematic diagram of the lifting mechanism in the specific embodiment of the present invention; Figure 11 To show the three-dimensional structural schematic diagram of the detecting mechanism in the specific embodiment of the present invention; Figure 12 To show the exploded structural schematic diagram (viewpoint one) of the translation mechanism in the specific embodiment of the present invention; Figure 13 To show the exploded structural schematic diagram (viewpoint two) of the translation mechanism in the specific embodiment of the present invention; The reference numerals in the schematic diagrams of the specification include: Conveyor line A; Grasping and loading device B, frame B1, diameter detection area B10, installation inner plate B100, tray temporary storage area B11, three-axis moving assembly B2, clamping assembly B3, clamping block B30, first telescopic member B31, electromagnet B320, first displacement sensor B321, detection seat B33, positioning and detecting assembly B4, positioning block B40, guide rail B41, second telescopic member B42, detection plate B43, third telescopic member B44, second displacement sensor B45; Pressure detection device C, outer frame C1, mounting support plate C10, liquid collection container C11, stamping mechanism C2, lifting assembly C3, sliding plate C30, connecting plate C31, support frame C32, spraying assembly C4, nozzle C40, first telescopic part C50, second telescopic part C51, limiting guide bar C60, sliding seat C61, placing seat C7, limiting block C70, V-shaped notch C700, strip-shaped through hole C701, nitrogen source C80, operating table C81; Laser marking machine D, operating table D1, laser emission assembly D3, lifting mechanism D4, sliding frame D40, lifting block D41, detection mechanism D5, abutting rod D50, mounting seat D51, connecting bottom plate D520, sliding upper plate D521, slider D522, slide rail D523, power source D53, screw rod D530, display screen D7, control box D8; Nitrogen spring E, cylinder block E1, piston rod E2. Specific implementation mode

[0016] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to the drawings and embodiments.

[0017] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation of this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0018] As Figure 1 As shown in FIG. -13, an intelligent assembly line for nitrogen springs of the present invention includes a plurality of conveying lines A, and a grasping device B, a pressure detection device C, and a laser marking machine D sequentially arranged between the conveying lines A.

[0019] Among them, the grasping device B includes a frame body B1, a clamping assembly B3, a magnetic attraction detection component, and a positioning detection component B4.

[0020] Among them, inside the frame body B1, a diameter detection area B10, a tray temporary storage area B11, and a three-axis moving component B2 connected to the frame body B1 are configured.

[0021] Under the action of the three-axis moving component B2, the clamping component B3 sequentially transfers the cylinder block E1 or the piston rod E2 to the diameter detection area B10 and the tray temporary storage area B11.

[0022] In the clamping component B3, there are paired clamping blocks B30 and a first telescopic member B31 for driving the clamping blocks B30 to move relatively closer or farther away.

[0023] The magnetic attraction detection component is connected to the clamping component B3. The magnetic attraction detection component includes an electromagnet B320 that can act on the top of the cylinder block E1 and / or the piston rod E2 and a first displacement sensor B321.

[0024] The positioning detection component B4 is arranged in the diameter detection area B10. In the positioning detection component B4, there are paired positioning blocks B40, a detection plate B43 arranged in parallel at the upper ends of the positioning blocks B40, a second telescopic member B42 for driving the positioning blocks B40 to slide relatively to make them approach or move away from each other, and a third telescopic member B44 for driving the detection plates B43 to approach or move away from each other.

[0025] A second displacement sensor B45 is connected to the installation inner plate B100. The second displacement sensor B45 is used to detect the distance between the two detection plates B43, and the head of the second displacement sensor B45 penetrates through the detection plate B43.

[0026] Among them, both the first displacement sensor B321 and the second displacement sensor B45 are electrically connected to the background control system.

[0027] Due to the setting of the magnetic attraction detection component and the positioning detection component B4, the height and outer diameter of the clamped cylinder block E1 or piston rod E2 to be assembled can be measured, and the measured parameter values are compared with the preset model parameters of the background control system to identify the corresponding model of the clamped material, so that the background control system makes corresponding control strategies to meet the requirements of modern intelligent assembly control and improve the production efficiency and quality of enterprise products.

[0028] As Figure 4 shown, specifically, the magnetic attraction detection component also has a detection seat B33 connected to the clamping component B3, and the electromagnet B320 and the first displacement sensor B321 are installed on the detection seat B33.

[0029] When performing height reference measurement on the cylinder block E1 or the piston rod E2, the three-axis moving assembly B2 controls the movement of the clamping assembly B3 in three degrees of freedom, so that the rectangular electromagnet B320 is in contact with the upper end surface of the cylinder block E1 or the piston rod E2, triggering the clamping action. This height is used as the effective height for measurement. The first displacement sensor B321 can real-time feedback the corresponding height measurement value and transmit it to the background control system.

[0030] The clamped material is transported to the diameter detection area B10 and is clamped and positioned between two positioning blocks B40 under the action of the second telescopic member B42. Then, under the action of the third telescopic member B44, the two detection plates B43 approach each other and stop at the outer wall of the material. With the participation of the second displacement sensor B45, the vertical distance between the two detection plates B43 is measured, thereby obtaining the outer diameter parameter value of the material.

[0031] The height and outer diameter values measured by the above-mentioned first displacement sensor and the second displacement sensor B45 are respectively fed back to the background control system, which can identify the preset model of the material in the database. If there is a difference between the cylinder block E1 or the piston rod E2 of this model and the feeding model on the production assembly line, the background control system controls the corresponding conveyor line to pause and issues an alarm prompt to the operator, so that the operator can manually remove the corresponding deviation material.

[0032] Among them, the positioning and detection assembly B4 further has a guide rail B41, and the positioning block B40 is slidably arranged on the guide rail B41. The setting of the guide rail B41 enables the positioning block B40 to slide smoothly along a preset direction.

[0033] In addition, an installation inner plate B100 connected to the frame B1 is arranged in the diameter detection area B10, and the positioning and detection assembly B4 is connected to the installation inner plate B100.

[0034] At least one of the clamping blocks B30 and the positioning blocks B40 in this embodiment has a V-shaped cross section. This structural style is adapted to the nitrogen spring E. An elastic pad (not shown in the figure) can also be arranged on the inner wall of the clamping block B30 and the positioning block B40. In this way, during the clamping and positioning process, the elastic pad can be made of a material with a buffering effect such as rubber material to avoid damaging the material.

[0035] Among them, at least one of the first telescopic member B31, the second telescopic member B42, and the third telescopic member B44 is a double-headed cylinder.

[0036] As Figure 6 shown, the pressure detection device C in this embodiment specifically includes an outer frame C1, an installation support plate C10, a placement seat C7, and a sliding seat C61. Among them, a stamping mechanism C2 is connected to the upper part of the outer frame C1. A nitrogen source C80 and an operation console C81 are arranged on the side of the outer frame C1.

[0037] The mounting support plate C10 is connected to the outer frame C1. The upper end of the mounting support plate C10 is connected with a lifting assembly C3, and a telescopic part C50 for horizontally moving the spraying assembly C4 is connected to the lifting assembly C3. The upper end of the mounting support plate C10 is also provided with parallel limit guide bars C60 and a second telescopic part C51. A sliding seat C61 is slidably arranged inside the limit guide bars C60 and is connected to the free end of the second telescopic part C51.

[0038] The placing seat C7 is connected to the upper end of the sliding seat C61 and is supported upward by the lower end of the nitrogen spring E.

[0039] By arranging a spraying assembly C4 communicating with an external water source on the outer frame C1, and through the joint cooperation of the lifting assembly C3 and the telescopic part C50, at least two degrees of freedom of the spraying assembly C4 are controlled, replacing manual spraying. During the process of detecting the pressure of the nitrogen spring E by the stamping mechanism C2, while ensuring safety, its operation efficiency and intensity are greatly improved.

[0040] As Figure 7 shown, in addition, when detecting nitrogen springs E of different diameters and sizes, the second telescopic part C51 can be used to push or pull the placing seat C7 and the sliding seat C61 in advance, so that the nitrogen spring E placed on the upper part can move accordingly, so as to be acted on by the upper stamping mechanism C2, with strong flexibility.

[0041] When facing nitrogen springs E with different lengths to be measured, the placing seat C7 at the lower part can be replaced, with strong adaptability.

[0042] In the prior art, since nitrogen springs E require different performances in different scenarios, nitrogen springs E have different sizes. However, when the above test device detects nitrogen springs E of different sizes, after changing the model, their central axes cannot be kept consistent, and there is a deviation from the preset axis of the upper stamping mechanism C2. After being acted on by the stamping mechanism C2, it is easy to cause damage to the piston rod E2 of the nitrogen spring E and deviation in pressure detection.

[0043] As Figure 8 shown, the upper end surface of the placing seat C7 is detachably connected with a limit block C70, and the side of the limit block C70 facing the nitrogen spring E has a V-shaped notch C700. Specifically, strip-shaped through holes C701 are symmetrically arranged at the upper end of the limit block C70.

[0044] The setting of the limit block C70 enables the outer periphery of the nitrogen spring E to be at the V-shaped notch C700. Under the action of the limit block C70, the nitrogen spring E can be kept coincident with the central axis of the placement seat C7, and the two are coaxial. A bolt passes through the strip-shaped through hole C701 to connect the limit block C70 to the upper end surface of the placement seat C7. Since the limit block C70 can move relative to the placement seat C7 in the setting direction of the strip-shaped through hole C701, it can adapt to nitrogen springs E with different diameters.

[0045] In this embodiment, the lifting assembly C3 has a sliding plate C30 that can move up and down, a motor, and a screw rod D530 mechanism connected to the output end of the motor. The sliding plate C30 is connected to the screw rod D530 mechanism. The above-mentioned lifting assembly C3 can also adopt other structural forms in the prior art, such as a cylinder with a telescopic function, a transmission structure in the form of a chain, etc., which are not specifically limited as long as it can achieve the up and down movement of the telescopic part C50.

[0046] The telescopic part C50 is connected to the sliding plate C30 through a connecting plate C31. Specifically, the cross-section of the connecting plate C31 is L-shaped. The lifting assembly C3 has a support frame C32. The setting of the support frame C32 can increase the stability of the entire lifting assembly C3.

[0047] In the spray assembly C4 of this embodiment, there are several nozzles C40 connected to an external water source, and the nozzles C40 act on the nitrogen spring E to be detected. The water sprayed by each nozzle C40 is in a mist state. If there are situations such as seals that affect the performance and safety of the nitrogen spring E in parts such as the cylinder body E1 and the piston rod E2, due to the supply of water, bubbles will appear at this place, thereby judging potential safety hazards to assist in the next step of processing.

[0048] In the technical solution of this embodiment, a cylinder or a screw rod D530 and other structures can be adopted in the telescopic part C50 and / or the telescopic part C51.

[0049] As Figure 6 shown, a liquid collection container C11 is provided at the lower part of the installation support plate C10. After the water sprayed by the upper spray assembly C4 is used, it can flow down along the outer wall of the nitrogen spring E and flow into the liquid collection container C11 under the action of the liquid collection pipes provided on both sides of the installation support plate C10, avoiding waste of water and enabling secondary utilization.

[0050] As Figure 9 shown (removing the outer shell), the laser marking machine D in this embodiment specifically includes an operating table D1, a lifting mechanism D4, and a detection mechanism D5.

[0051] Among them, a laser emission assembly D3 for acting on the nitrogen spring E is provided at the upper end of the operating table D1; The lifting mechanism D4 is arranged on the side of the laser emission component D3 and is connected to the upper end of the working table D1. The lifting mechanism D4 is electrically connected to the laser emission component D3.

[0052] A display screen D7 and a control box D8 are also connected to the working table D1.

[0053] The detection mechanism D5 is slidably connected to the lifting mechanism D4. The detection mechanism D5 has an abutting rod D50. Under the action of the lifting mechanism D4, the detection mechanism D5 makes the abutting rod D50 approach or move away from the top end of the nitrogen spring E.

[0054] By arranging the detection mechanism D5 on the lifting mechanism D4, driven by the lifting mechanism D4, the detection mechanism D5 moves in the vertical direction. The abutting rod D50 contacts the top of the nitrogen spring E placed at a predetermined position to identify the height information of the workpiece. Under the joint reference of the control system, the specific model of the workpiece is identified, and the laser emission component D3 is controlled to move. At a specific position on the outer wall of the cylinder block E1 of the workpiece, the corresponding workpiece information is marked. In this way, the marking efficiency is not reduced due to the change of the workpiece model.

[0055] Such as Figure 11 、 Figure 12 、 Figure 13 As shown, the detection mechanism D5 further includes at least two translation mechanisms that are overlapped and have mutually perpendicular and staggered degrees of freedom. The translation mechanism includes a connecting bottom plate D520, a sliding upper plate D521, and a power source D53 that drives the sliding upper plate D521 to move relative to the connecting bottom plate D520. The abutting rod D50 is connected to the sliding upper plate D521. The detection mechanism D5 is installed on the sliding frame D40 and is connected to the lifting block D41 of the lifting mechanism D4 through the sliding frame D40.

[0056] Since the detection mechanism D5 in this technical solution uses translation mechanisms that are overlapped and have mutually perpendicular and staggered degrees of freedom, when there are partial position deviations in the placed nitrogen spring E, after manually operating the control box D8 to achieve multi-degree-of-freedom control of the abutting rod D50, it can ensure the contact between the abutting rod D50 and the top of the piston rod E2 of the nitrogen spring E, with strong adaptability. The structure of the detection mechanism D5 is compact and reasonably designed.

[0057] Specifically, paired slide rails D523 are provided on both the sliding upper plate D521 and the opposite side of the connecting bottom. A threaded slider D522 is connected to the lower bottom surface of the sliding upper plate D521.

[0058] In this embodiment, the power source D53 uses a servo motor. The power output end of the servo motor is connected to a screw rod D530. The slider D522 is sleeved on the outer circumference of the screw rod D530. By controlling the forward and reverse rotation amounts of the servo motor through the control box D8, the relative sliding amount between the sliding upper plate D521 and the connecting bottom plate D520 is realized.

[0059] An installation base D51 for fixing the abutting rod D50 is connected to the top of the sliding upper plate D521.

[0060] The above-mentioned lifting mechanism D4 and laser emission assembly D3 are both prior arts. For the specific structures and connection forms, reference can be made to the technical solutions mentioned in relevant technical documents. For example, if the lifting mechanism D4 is replaced with a cylinder or a screw D530 mechanism, the above structures do not fall within the protection scope of this application.

[0061] It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention and will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. An intelligent assembly line for nitrogen springs, characterized in that, It includes multiple conveyor lines (A), a gripping device (B), a pressure detection device (C), and a laser marking machine (D) that are sequentially arranged between the conveyor lines (A); The gripping device (B) includes a frame body (B1), a clamping assembly (B3), a magnetic adsorption detection assembly, and a positioning detection assembly (B4); A three-axis moving assembly (B2) is configured inside the frame body (B1), and the clamping assembly (B3) is connected to the three-axis moving assembly (B2); The magnetic adsorption detection assembly is connected to the clamping assembly (B3). The magnetic adsorption detection assembly includes an electromagnet (B320) that can act on the top of the cylinder block (E1) and / or the piston rod (E2), and a first displacement sensor (B321). In the positioning detection assembly (B4), there are paired positioning blocks (B40), a detection plate (B43) arranged in parallel at the upper ends of the positioning blocks (B40), and a second displacement sensor (B45); The pressure detection device (C) includes a stamping mechanism (C2), a lifting assembly (C3), and a spraying assembly (C4); The laser marking machine (D) includes an operating table (D1), and a laser emission assembly (D3) arranged at the upper end of the operating table (D1) for acting on a nitrogen spring. A lifting mechanism (D4) is connected to the side of the laser emission assembly (D3) and the upper end of the operating table (C81), and the lifting mechanism (D4) is electrically connected to the laser emission assembly (D3); A detection mechanism (D5) is slidably connected to the lifting mechanism (D4). The detection mechanism (D5) has an abutting rod (D50). Under the action of the lifting mechanism (D4), the abutting rod (D50) approaches or moves away from the top end of the nitrogen spring.

2. The nitrogen spring intelligent assembly line according to claim 1, wherein, The magnetic adsorption detection assembly also has a detection seat (B33) connected to the clamping assembly (B3), and the electromagnet (B320) and the first displacement sensor (B321) are installed on the detection seat (B33).

3. The intelligent assembly line for nitrogen springs according to claim 1 or 2, characterized in that, The positioning detection assembly (B4) also has a guide rail (B41), and the positioning blocks (B40) are slidably arranged on the guide rail (B41).

4. The intelligent assembly line for nitrogen springs according to claim 1 or 2, characterized in that, The cross-section of the positioning block (B40) is V-shaped.

5. The nitrogen spring intelligent assembly line according to claim 1, wherein, The detection mechanism (D5) also includes at least two translation mechanisms that are overlapped and have mutually perpendicular and staggered degrees of freedom.

6. The nitrogen gas spring intelligent assembly line according to claim 5, characterized in that, The translation mechanism includes a connecting bottom plate (D520), a sliding upper plate (D521), and a power source (D53) that drives the sliding upper plate (D521) to move relative to the connecting bottom plate (D520). The abutting rod (D50) is connected to the sliding upper plate (D521).

7. The nitrogen spring intelligent assembly line according to claim 6, characterized in that, A display screen (D7) and a control box (D8) are also connected to the operating table (C81).

8. The intelligent assembly line for nitrogen springs according to claim 1, wherein The spraying assembly (C4) has several nozzles (C40) connected to an external water source, and the nozzles (C40) act on the nitrogen spring to be detected.

9. The nitrogen spring intelligent assembly line according to claim 8, characterized in that, A liquid collecting container (C11) is also arranged in the pressure detection device (C).

10. The nitrogen spring intelligent assembly line according to claim 9, wherein The pressure detection device (C) has an outer frame (C1), and a nitrogen source (C80) and an operating table (C81) are arranged on the side of the outer frame (C1).

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