Detection device for nitrogen spring production line and production process

Abstract

The invention discloses a detection device for a nitrogen spring production line and a production process, the detection device comprises a base, a lower ring box is arranged above the base, an upper ring box is arranged above the lower ring box, the lower ring box and the upper ring box are concentrically arranged, and the lower ring box and the upper ring box surround the outer side of a nitrogen spring body; and an arc box is communicated between the lower ring box and the upper ring box. By arranging a lower ring box, an upper ring box, a first air bag and other structures, the nitrogen spring body is fixed, the outer side of the nitrogen spring body is divided into a plurality of closed detection spaces, and the air leakage position can be found out conveniently; meanwhile, the rotating box can rotate on the lower ring box and the upper ring box, the second strip box drives the second air bag to move, the detection space is further reduced, the air leakage position is found out more quickly, and therefore the use efficiency of the nitrogen spring production line is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nitrogen spring production, and in particular to a detection device and a production process for a nitrogen spring production line. Background Art

[0002] Nitrogen spring is a new type of elastic component that uses high-pressure nitrogen as the working medium. It has small size, large elastic force, long stroke, stable operation, precise manufacturing, long service life, flat elastic force curve, and no need for pre-tightening, etc.

[0003] For example, a patent entitled: An air tightness detection device for nitrogen spring processing (patent publication number: CN218973744U) discloses an air tightness detection device for nitrogen spring processing. Through the cooperation of a stepper motor, a worm, a worm wheel, a threaded barrel, a first bearing, a screw, a slider, and a guide rail, the screw can be moved downward, and when the screw moves downward, it drives the detection pressure head to move downward, so that the detection pressure head can perform downward pressure detection on the nitrogen spring piston rod. In this way, after the nitrogen spring piston rod moves downward, the nitrogen in the nitrogen spring cylinder body will be compressed. If there is a leak between the nitrogen spring piston rod and the nitrogen spring cylinder body, the leaking bubbles caused by the leak can be directly detected and observed in the water in the transparent detection water tank. Otherwise, there will be no leak. However, the nitrogen spring needs to be dried after being taken out, which will increase the processing steps.

[0004] Therefore, it is necessary to propose a detection device and production process for a nitrogen spring production line to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a detection device and a production process for a nitrogen spring production line, so as to solve the problem that the nitrogen spring needs to be dried after being taken out, which increases the processing steps.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a detection device for a nitrogen spring production line, comprising a base, a lower ring box is arranged above the base, an upper ring box is arranged above the lower ring box, the lower ring box and the upper ring box are arranged concentrically, the lower ring box and the upper ring box both surround the outer side of the nitrogen spring body, an arc box is connected between the lower ring box and the upper ring box, the arc boxes are arranged in plurality, the plurality of arc boxes are evenly distributed around the axis of the lower ring box, a first strip box is connected on one side of the arc box facing the axis of the lower ring box, a first air bag is connected on the side of the first strip box facing away from the arc box, a rotating box is rotatably arranged outside the lower ring box, and the top end of the rotating box is rotatably connected to the upper ring box, a second strip box is connected on the inner circle of the rotating box, a plurality of the second strip boxes are arranged, the plurality of second strip boxes are staggered one by one with the plurality of arc boxes, a second air bag is connected on the side of the second strip box facing away from the rotating box, a lower air bag is connected on the inner circle of the lower ring box, and an upper air bag is connected on the inner circle of the upper ring box.

[0007] Preferably, a detection tube is provided between each of the adjacent arc boxes and the second strip box, a circular hole for the detection tube to pass through is provided on the rotating box, and the detection tube is close to the second strip box.

[0008] Preferably, a detection assembly is provided inside the detection tube, and the detection assembly includes a first slide plate, a buffer spring, a second slide plate and a pressure sensor. The first slide plate and the second slide plate are both slidably connected inside the detection tube, and the second slide plate is located on the side of the first slide plate facing away from the rotating box. One end of the buffer spring is fixedly connected to the first slide plate, and the other end of the buffer spring is fixedly connected to the second slide plate. The pressure sensor is arranged on an end of the detection tube away from the rotating box, and the second slide plate abuts against the pressure sensor.

[0009] Preferably, a slide groove is provided on the inner wall of the detection tube, a sliding block is slidably connected inside the slide groove, and the sliding block is fixedly connected to the second sliding block.

[0010] Preferably, the rotating box is connected with a first air pipe, and one end of the first air pipe away from the rotating box is connected with the lower ring box.

[0011] Preferably, an air groove is provided inside the base, and air holes are provided on the upper surface of the base. The air holes are connected to the air groove, and the air holes are distributed correspondingly to the lower ring box and the upper ring box.

[0012] Preferably, a pump body is fixedly connected to the base, and the pump body is a four-way air pump with two air outlet ducts and two air inlet ducts, one of the air outlet ducts is connected to the rotating box through the second air pipe, and the other air outlet duct is connected to the atmospheric environment, one of the air inlet ducts is connected to the air groove through the third air pipe, and the other air inlet duct is connected to the atmospheric environment, and a solenoid valve is provided in each air outlet duct and air inlet duct.

[0013] Preferably, a gantry is fixedly connected to the top of the base, a first electric push rod is fixedly connected to the gantry, a U-shaped frame is fixedly connected to the telescopic end of the first electric push rod, and the upper ring box is fixedly connected to the U-shaped frame.

[0014] Preferably, a second electric push rod is fixedly connected to the lower surface of the top of the U-shaped frame, and the second electric push rod cooperates with the nitrogen spring body.

[0015] The present invention proposes a nitrogen spring production process, including the above-mentioned nitrogen spring production line, and further comprising the following steps:

[0016] S1. Positioning: Place the nitrogen spring body on the base. The lower ring box, the upper ring box and the multiple arc boxes form a positioning structure that is mounted on the outside of the nitrogen spring body from top to bottom to control the expansion of the upper and lower air bags, and complete the fixed positioning of the nitrogen spring body, which is convenient for subsequent testing.

[0017] S2. Detection: After the first airbag is inflated, and with the cooperation of the upper airbag and the lower airbag, the outer side of the nitrogen spring body is divided into a plurality of closed detection spaces to facilitate finding the leakage position;

[0018] S3, adjustment, the rotating box drives the second airbag to move through the second box, further reducing the detection space, finding the leakage position more quickly, and improving production efficiency.

[0019] The beneficial technical effects of the present invention are as follows: by arranging structures such as a lower ring box, an upper ring box and a first airbag, the nitrogen spring body is fixed, and the outer side of the nitrogen spring body is divided into a plurality of closed detection spaces, so as to facilitate finding the leakage position; at the same time, the rotating box can rotate on the lower ring box and the upper ring box, and the second airbag is driven to move by the second box, so as to further reduce the detection space, find the leakage position more quickly, and thus improve the utilization efficiency of the nitrogen spring production line; when a leakage occurs in the detection space, the gas in the detection space will enter the detection tube, so that the first slide plate slides toward the second slide plate, the compression buffer spring contracts, and the second slide plate acts on the pressure sensor, the pressure sensor monitors the pressure, and thus finds the leakage position; the pump body performs negative pressure adsorption on the nitrogen spring body through the third air pipe, the air groove and the air hole, and then closes the solenoid valve on the air inlet duct corresponding to the third air pipe, so that the nitrogen spring body is fixed on the base, and the accuracy of the detection is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the nitrogen spring production line of the present invention.

[0021] Figure 2 It is a schematic diagram of the base and gantry structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the base and the rotating box structure of the present invention.

[0023] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0024] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0025] Figure 6 It is a schematic diagram of the arc box and the rotating box structure of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the first box and the first airbag of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the lower ring box and the upper ring box of the present invention.

[0028] Fig. 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point C in the middle.

[0029] Fig.10 For the present invention Fig. 9 Enlarged schematic diagram of the structure at point D in the middle.

[0030] In the figure: 1. detection device; 2. assembly station; 3. packaging station; 4. base; 5. lower ring box; 6. upper ring box; 7. arc box; 8. first box; 9. first air bag; 10. second electric push rod; 11. upper air bag; 12. lower air bag; 13. rotating box; 14. second box; 15. second air bag; 16. first air pipe; 17. detection tube; 18. first slide plate; 19. buffer spring; 20. second slide plate; 21. nitrogen spring body; 22. pressure sensor; 23. slide groove; 24. slider; 25. pump body; 26. second air pipe; 27. air groove; 28. air hole; 29. ​​third air pipe; 30. gantry; 31. first electric push rod; 32. U-shaped frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 10 As shown, the present invention provides a detection device for a nitrogen spring production line. The nitrogen spring production line includes a detection device 1, an assembly station 2, a packaging station 3 and a conveying device. The detection device 1 can detect the air tightness of the nitrogen spring body 21 to ensure the qualified rate of the nitrogen spring body 21; the nitrogen spring body 21 parts are assembled into a whole at the assembly station 2; the qualified nitrogen spring body 21 is packaged at the packaging station 3; the conveying device conveys the nitrogen spring body 21. The production line is an existing common technology and will not be described in detail here.

[0033] In order to improve the use efficiency of the production line, the detection device 1 includes a base 4, a lower ring box 5 is arranged above the base 4, an upper ring box 6 is arranged above the lower ring box 5, the lower ring box 5 and the upper ring box 6 are arranged concentrically, the lower ring box 5 and the upper ring box 6 are both surrounded by the outer side of the nitrogen spring body 21, and an arc box 7 is connected between the lower ring box 5 and the upper ring box 6. The arc boxes 7 are arranged in multiple numbers, and the multiple arc boxes 7 are evenly distributed around the axis of the lower ring box 5. The lower ring box 5 is connected to the inner circle of the lower ring box 5. The upper air bag 11 is connected to the inner circle of the upper ring box 6. The lower ring box 5, the upper ring box 6 and the multiple arc boxes 7 form a positioning structure.

[0034] The nitrogen spring body 21 is placed on the base 4, and the positioning structure formed by the lower ring box 5, the upper ring box 6 and the plurality of arc boxes 7 is sleeved on the outside of the nitrogen spring body 21 from upward to downward, and the lower ring box 5 corresponds to the bottom position of the nitrogen spring body 21, and the upper ring box 6 corresponds to the piston rod position of the nitrogen spring body 21, and then the upper air bag 11 and the lower air bag 12 are controlled to expand to complete the fixed positioning of the nitrogen spring body 21, which is convenient for subsequent detection.

[0035] In order to detect the air tightness of the nitrogen spring, quickly find the leakage position and improve production efficiency, the first box 8 is connected to the side of the arc box 7 facing the axis of the lower ring box 5, and the first air bag 9 is connected to the side of the first box 8 facing away from the arc box 7. After the first air bag 9 is inflated, the lower half of the first air bag 9 will abut against the outer wall of the cylinder of the nitrogen spring body 21, and the upper half of the first air bag 9 will abut against the outer wall of the piston rod of the nitrogen spring body 21. Under the expansion cooperation of the upper air bag 11 and the lower air bag 12, the outer side of the nitrogen spring body 21 is divided into multiple closed detection spaces, which is convenient for finding the leakage position.

[0036] In order to narrow the range of the detection space and find the leakage position more quickly, a rotating box 13 is rotatably arranged on the outside of the lower ring box 5, and the top end of the rotating box 13 is rotatably connected to the upper ring box 6, and the inner circle of the rotating box 13 is connected to a second box 14. The second box 14 is arranged in plurality, and the plurality of second boxes 14 are staggeredly distributed one by one with the plurality of arc boxes 7, and the second box 14 is connected to a second air bag 15 on the side facing away from the rotating box 13.

[0037] When the second airbag 15 expands, the lower half will abut against the outer wall of the cylinder of the nitrogen spring body 21, and the upper half will abut against the outer wall of the piston rod of the nitrogen spring body 21, thereby cooperating with the first airbag 9, the upper airbag 11 and the lower airbag 12 to form a smaller detection space; and the rotating box 13 can rotate on the lower ring box 5 and the upper ring box 6. When the rotating box 13 is rotated, the rotating box 13 drives the second airbag 15 to move through the second box 14, further reducing the detection space, finding the leakage position more quickly, and improving production efficiency.

[0038] By arranging structures such as the lower ring box 5, the upper ring box 6 and the first airbag 9, the nitrogen spring body 21 is fixed, and the outer side of the nitrogen spring body 21 is divided into a plurality of closed detection spaces, so as to facilitate finding the leakage position; at the same time, the rotating box 13 can rotate on the lower ring box 5 and the upper ring box 6, and the second airbag 15 is driven to move through the second box 14, so as to further reduce the detection space and find the leakage position more quickly, thereby improving the utilization efficiency of the nitrogen spring production line.

[0039] Considering that the first airbag 9 and the second airbag 15 directly correspond to the leakage position, the nitrogen spring body 21 can be rotated after a single detection so that the positions originally corresponding to the first airbag 9 and the second airbag 15 are adjusted to the detection space.

[0040] In the specific use process, a driving mechanism is provided to drive the rotating box 13 to rotate, and the driving mechanism includes a motor, gears and other structures. The driving mechanism is a common technology in the prior art and will not be described in detail here.

[0041] In order to monitor the leakage position, a detection tube 17 is provided between the adjacent arc box 7 and the second strip box 14 , a circular hole for the detection tube 17 to pass through is opened on the rotating box 13 , and the detection tube 17 is close to the second strip box 14 .

[0042] A detection assembly is disposed inside the detection tube 17, and the detection assembly includes a first slide plate 18, a buffer spring 19, a second slide plate 20, and a pressure sensor 22. The first slide plate 18 and the second slide plate 20 are both slidably connected inside the detection tube 17, and the second slide plate 20 is located on the side of the first slide plate 18 facing away from the rotating box 13. One end of the buffer spring 19 is fixedly connected to the first slide plate 18, and the other end of the buffer spring 19 is fixedly connected to the second slide plate 20. The pressure sensor 22 is disposed on the end of the detection tube 17 away from the rotating box 13, and the second slide plate 20 abuts against the pressure sensor 22.

[0043] When a gas leak occurs in the detection space, the gas in the detection space will enter the detection tube 17, causing the first slide 18 to slide toward the second slide 20, squeezing the buffer spring 19 to contract, and acting on the pressure sensor 22 through the second slide 20. The pressure sensor 22 monitors the pressure to find the location of the gas leak.

[0044] In order to improve the efficiency of detection, the forward detection space can also be inflated to saturate the internal gas, so as to quickly find the leakage location.

[0045] In order to improve the sliding stability of the second slide plate 20 in the detection tube 17 , a slide groove 23 is provided on the inner wall of the detection tube 17 , and a slider 24 is slidably connected inside the slide groove 23 , and the slider 24 is fixedly connected to the second slide plate 20 .

[0046] The rotating box 13 is connected with a first air pipe 16 , and one end of the first air pipe 16 away from the rotating box 13 is connected with the lower ring box 5 , and the first air pipe 16 can be a telescopic hose.

[0047] In order to improve the positioning stability of the nitrogen spring body 21, an air groove 27 is provided inside the base 4, and an air hole 28 is provided on the upper surface of the base 4. The air hole 28 is connected to the air groove 27, and the air hole 28 is distributed correspondingly to the lower ring box 5 and the upper ring box 6. A pump body 25 is fixedly connected to the base 4. The pump body 25 is a four-way air pump with two air outlet pipes and two air inlet pipes, one of which is connected to the rotating box 13 through the second air pipe 26, and the other air outlet pipe is connected to the atmospheric environment, one of which is connected to the air groove 27 through the third air pipe 29, and the other air inlet pipe is connected to the atmospheric environment, and each air outlet pipe and air inlet pipe are provided with a solenoid valve.

[0048] The nitrogen spring body 21 is placed on the base 4, the solenoid valve on the air inlet duct corresponding to the third air pipe 29 is opened, and the solenoid valve on the air outlet duct connected to the atmospheric environment is opened. The pump body 25 performs negative pressure adsorption on the nitrogen spring body 21 through the third air pipe 29, the air groove 27 and the air hole 28, and then the solenoid valve on the air inlet duct corresponding to the third air pipe 29 is closed, so that the nitrogen spring body 21 is fixed on the base 4 to improve the accuracy of detection.

[0049] When it is necessary to inflate the interior of the arc box 7 and other structures, open the solenoid valve on the air outlet duct corresponding to the second air pipe 26, open the solenoid valve on the air inlet duct connected to the atmospheric environment, and the pump body 25 transports the external gas to the interior of the rotating box 13 through the second air pipe 26, and enters the interior of the lower ring box 5, the upper ring box 6 and the first air bag 9 and other structures through the first air pipe 16.

[0050] In order to control the lower ring box 5, the upper ring box 6 and the multiple arc boxes 7 to move up and down, a gantry 30 is fixedly connected to the top of the base 4, a first electric push rod 31 is fixedly connected to the gantry 30, a U-shaped frame 32 is fixedly connected to the telescopic end of the first electric push rod 31, and the upper ring box 6 is fixedly connected to the U-shaped frame 32. By controlling the telescopic end of the first electric push rod 31 to extend and retract, the lower ring box 5, the upper ring box 6 and the multiple arc boxes 7 are driven to move up and down.

[0051] In order to achieve the pressing of the nitrogen spring body 21 , a second electric push rod 10 is fixedly connected to the lower surface of the top of the U-shaped frame 32 , and the second electric push rod 10 cooperates with the nitrogen spring body 21 .

[0052] The present invention proposes a nitrogen spring production process, including the above-mentioned nitrogen spring production line, and further comprising the following steps:

[0053] S1, positioning, placing the nitrogen spring body 21 on the base 4, the lower ring box 5, the upper ring box 6 and the plurality of arc boxes 7 form a positioning structure which is mounted on the outside of the nitrogen spring body 21 from top to bottom, controls the expansion of the upper airbag 11 and the lower airbag 12, completes the fixed positioning of the nitrogen spring body 21, and facilitates subsequent detection;

[0054] S2, detection, after the first airbag 9 is inflated, and with the expansion cooperation of the upper airbag 11 and the lower airbag 12, the outer side of the nitrogen spring body 21 is divided into a plurality of closed detection spaces, so as to find the leakage position;

[0055] S3, adjustment, the rotating box 13 drives the second airbag 15 to move through the second box 14, further reducing the detection space, finding the leakage position more quickly, and improving production efficiency.

Claims

1. A detection device for a nitrogen spring production line, characterized in that: The detection device (1) comprises a base (4), a lower ring box (5) is arranged above the base (4), an upper ring box (6) is arranged above the lower ring box (5), the lower ring box (5) and the upper ring box (6) are arranged concentrically, the lower ring box (5) and the upper ring box (6) are both surrounded by the outer side of the nitrogen spring body (21), an arc box (7) is connected between the lower ring box (5) and the upper ring box (6), a plurality of arc boxes (7) are arranged, and the plurality of arc boxes (7) are evenly distributed around the axis of the lower ring box (5), and a first strip box (8) is connected to the side of the arc box (7) facing the axis of the lower ring box (5), and the first strip box (8) faces away from the arc box A first air bag (9) is connected to one side of the lower ring box (7); a rotating box (13) is rotatably arranged on the outside of the lower ring box (5), and the top end of the rotating box (13) is rotatably connected to the upper ring box (6); a second box (14) is connected to the inner circle of the rotating box (13); a plurality of second boxes (14) are arranged, and the plurality of second boxes (14) are staggered with the plurality of arc boxes (7); a second air bag (15) is connected to the side of the second box (14) facing away from the rotating box (13); a lower air bag (12) is connected to the inner circle of the lower ring box (5), and an upper air bag (11) is connected to the inner circle of the upper ring box (6).

2. The detection device for a nitrogen spring production line according to claim 1, characterized in that: A detection tube (17) is arranged between adjacent arc boxes (7) and the second strip box (14); a circular hole for the detection tube (17) to pass through is opened on the rotating box (13), and the detection tube (17) is close to the second strip box (14).

3. The detection device for a nitrogen spring production line according to claim 2, characterized in that: A detection assembly is arranged inside the detection tube (17), and the detection assembly comprises a first slide plate (18), a buffer spring (19), a second slide plate (20) and a pressure sensor (22); the first slide plate (18) and the second slide plate (20) are both slidably connected inside the detection tube (17), and the second slide plate (20) is located on the side of the first slide plate (18) facing away from the rotating box (13); one end of the buffer spring (19) is fixedly connected to the first slide plate (18), and the other end of the buffer spring (19) is fixedly connected to the second slide plate (20); the pressure sensor (22) is arranged on the end of the detection tube (17) away from the rotating box (13), and the second slide plate (20) abuts against the pressure sensor (22).

4. The detection device for a nitrogen spring production line according to claim 3, characterized in that: A sliding groove (23) is provided on the inner wall of the detection tube (17), a sliding block (24) is slidably connected inside the sliding groove (23), and the sliding block (24) is fixedly connected to the second sliding block (20).

5. The detection device for a nitrogen spring production line according to claim 1, characterized in that: The rotating box (13) is connected to a first air pipe (16), and one end of the first air pipe (16) away from the rotating box (13) is connected to the lower ring box (5).

6. The detection device for a nitrogen spring production line according to claim 1, characterized in that: An air groove (27) is provided inside the base (4), and an air hole (28) is provided on the upper surface of the base (4). The air hole (28) is communicated with the air groove (27), and the air hole (28) is distributed correspondingly to the lower ring box (5) and the upper ring box (6).

7. The detection device for a nitrogen spring production line according to claim 6, characterized in that: A pump body (25) is fixedly connected to the base (4), and the pump body (25) is a four-way air pump having two air outlet ducts and two air inlet ducts, wherein one of the air outlet ducts is connected to the rotating box (13) through a second air pipe (26), and the other air outlet duct is connected to the atmospheric environment, one of the air inlet ducts is connected to the air groove (27) through a third air pipe (29), and the other air inlet duct is connected to the atmospheric environment, and each of the air outlet duct and the air inlet duct is provided with a solenoid valve.

8. The detection device for a nitrogen spring production line according to claim 1, characterized in that: The top of the base (4) is fixedly connected to a gantry (30), the gantry (30) is fixedly connected to a first electric push rod (31), the telescopic end of the first electric push rod (31) is fixedly connected to a U-shaped frame (32), and the upper ring box (6) is fixedly connected to the U-shaped frame (32).

9. The detection device for a nitrogen spring production line according to claim 8, characterized in that: A second electric push rod (10) is fixedly connected to the lower surface of the top of the U-shaped frame (32), and the second electric push rod (10) cooperates with the nitrogen spring body (21).

10. A nitrogen spring production process, characterized in that: The nitrogen spring production line includes the detection device for the nitrogen spring production line as claimed in any one of claims 1 to 9, and also includes an assembly station, a packaging station and a conveying device, wherein the steps are: S1, positioning, placing the nitrogen spring body (21) on the base (4), and the positioning structure formed by the lower ring box (5), the upper ring box (6) and the plurality of arc boxes (7) are mounted on the outside of the nitrogen spring body (21) from top to bottom, controlling the expansion of the upper air bag (11) and the lower air bag (12), completing the fixed positioning of the nitrogen spring body (21), and facilitating subsequent detection; S2, detection, after the first airbag (9) is inflated, and with the cooperation of the expansion of the upper airbag (11) and the lower airbag (12), the outer side of the nitrogen spring body (21) is divided into a plurality of closed detection spaces, so as to facilitate finding the leakage position; S3, adjustment, the rotating box (13) drives the second air bag (15) to move through the second box (14), further reducing the detection space, finding the leakage position more quickly, and improving production efficiency.

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