Spring mounting device

Abstract

The present invention provides a spring installation device, which belongs to the field of spring installation technology; it includes a Y-axis electric guide rail, a Z-axis electric guide rail, an X-axis electric guide rail and a product positioning seat, wherein the Y-axis electric guide rail is fixed on a workbench, the Z-axis electric guide rail is installed on the Y-axis electric guide rail, the X-axis electric guide rail is fixed on the workbench and is located below the Y-axis electric guide rail, and a loading tray is installed on the X-axis electric guide rail. The present invention provides a shell, a taking tube, an airbag belt and a drive assembly. When taking a spring, the taking tube is inserted into the interior of the spring, and the airbag belt is driven to expand outward by the drive assembly. Through the flexible extrusion of the airbag belt, the spring is fixed to the outside of the taking tube while avoiding damage to the spring, thereby achieving protection for the spring. Secondly, through the cooperation of the Y-axis electric guide rail, the Z-axis electric guide rail and the X-axis electric guide rail, the spring installation is made more accurate, thereby improving the qualified rate of the assembled product.

Description

Technical Field

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

[0002] In the field of modern precision instrument and micro-device manufacturing, tiny springs, as indispensable basic components, are widely used in high-tech industries such as electronic products and medical equipment. These elastic components, due to their high elasticity and high precision, undertake key functions such as connection conduction and pressure buffering. The current assembly of tiny springs is still mainly done by manual operation. During the manual operation, it is easy to cause spring deformation, surface scratches and other damages. In electronic products such as smart phones and wearable devices that have strict requirements on stability, if the spring is damaged, it will not only cause functional failures such as signal transmission loss and poor contact of contacts, but may also cause intermittent failure of the equipment, shortened service life and other systemic problems, which directly affect the market competitiveness and user experience of the terminal product. Therefore, the present application provides a spring installation device to meet the needs. Summary of the Invention

[0003] The invention provides a spring installation device to solve the problem of spring damage caused by manual installation of the spring.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A spring mounting device includes a Y-axis electric guide rail, a Z-axis electric guide rail, an X-axis electric guide rail, and a product positioning seat. The Y-axis electric guide rail is fixed to a workbench, the Z-axis electric guide rail is mounted on the Y-axis electric guide rail, the X-axis electric guide rail is fixed to the workbench and is located below the Y-axis electric guide rail, a loading tray is mounted on the X-axis electric guide rail, the product positioning seat is mounted on the X-axis electric guide rail via an L-shaped rod, and a bracket is mounted on the Z-axis electric guide rail. The device also includes:

[0006] The object-retrieving mechanism includes a shell fixed at the bottom of the bracket, the bottom of the shell is connected to a object-retrieving tube, the surface of the object-retrieving tube is provided with an expansion cavity, the inner wall of the expansion cavity is fixed with an airbag belt, and a driving component is provided inside the shell, and the driving component is used to drive the airbag belt to expand outward.

[0007] Preferably, the driving assembly includes a vertical rod that movably passes through the bottom of the extraction tube, the inner wall of the shell is slidably connected to a piston, the top of the vertical rod is fixed to the bottom of the piston, a number of elastic parts are fixed between the top of the piston and the top of the inner wall of the shell, a contact sensor is fixed to the top of the inner wall of the shell, a number of electromagnetic suction cups are fixed to the top of the inner wall of the shell, the elastic parts are sleeved on the surface of the electromagnetic suction cup, an airway is provided in the wall thickness of the shell and the extraction tube, the bottom end of the airway is connected to the expansion chamber, the top end of the airway is connected to the shell, and the top end of the airway is provided near the inner wall of the shell. Near the top, the shell of the shell is inlaid with solenoid valve 1, which is used to control whether the airway is connected. The top of the shell is provided with an air inlet connected to the shell, and a one-way valve is provided in the air inlet. The one-way valve is used to prevent gas from being discharged from the air inlet. An exhaust hole is provided below the solenoid valve 1, and the exhaust hole is connected to the airway. A solenoid valve 2 is fixed on the side of the shell and located at the exhaust hole. The solenoid valve 2 is used to control whether the exhaust hole is connected. The contact sensor is electrically connected to the electromagnetic suction cup, and the contact sensor is electrically connected to the solenoid valve 1 and the solenoid valve 2 respectively.

[0008] Preferably, an annular pressure sensor is fixed to the bottom of the shell, the annular pressure sensor is sleeved on the surface of the extraction cylinder, and the annular pressure sensor is electrically connected to the solenoid valve.

[0009] Preferably, the elastic member is a spring.

[0010] Preferably, a plurality of ribs are fixed to the middle portion of the surface of the airbag belt, and the plurality of ribs are arranged in a circumferential array on the surface of the airbag belt.

[0011] Preferably, the surface of the rib is provided with a plurality of grooves, and the spacing between the plurality of grooves is the same.

[0012] Preferably, both ends of the rib are provided with a guide portion, the angle between the guide portion and the rib is ninety degrees, and the surface of the extraction tube is provided with a plurality of guide grooves, and the guide portion is movably inserted in the guide grooves.

[0013] Preferably, the bottom of the vertical rod is a curved surface.

[0014] Preferably, an elastic band is fixed to the bottom edge of the retrieval cylinder, and the bottom of the vertical rod rests on the surface of the elastic band.

[0015] Preferably, an oblique ring is fixedly sleeved on the surface of the retrieval cylinder, and the top of the oblique ring is arranged below the annular pressure sensor.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up a shell, a taking tube, an airbag belt and a driving assembly, when taking the spring, the taking tube is inserted into the inside of the spring, and the airbag belt is driven to expand outward by the driving assembly. Through the flexible squeezing of the airbag belt, the spring is fixed to the outside of the taking tube while avoiding damage to the spring, thereby achieving protection of the spring. Secondly, through the cooperation of the Y-axis electric guide rail, the Z-axis electric guide rail and the X-axis electric guide rail, the spring installation is made more accurate, thereby improving the qualified rate of the assembled product.

[0018] By setting up an annular pressure sensor, after the sampling tube is inserted into the inside of the spring, the annular pressure sensor can detect whether the elastic force of the spring is qualified. If it is qualified, the driving component will drive the airbag belt to expand outward. If it is unqualified, the driving component will not drive the airbag belt to expand outward, thereby realizing the distinction between good and bad springs and further improving the qualified rate of the assembled products.

[0019] By providing ribs, guide parts and guide grooves, the airbag belt will drive the ribs to expand outward during the outward expansion of the airbag belt, and the ribs will be clamped inside the spring to avoid contact between the airbag belt and the spring to form marks, which will cause the spring to be unable to fall smoothly. This will once again make the spring installation more accurate, thereby improving the qualified rate of the assembled product.

[0020] By setting up the elastic band, during the process of taking the spring, the bottom of the taking tube first approaches the top of the spring. At this time, the vertical rod squeezes the elastic band into a cone shape. The spring is guided through the tapered inclined surface to avoid the spring being stuck between the taking tube and the vertical rod, thereby improving the smoothness of the spring taking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic structural diagram of the object-taking mechanism of the present invention;

[0023] Figure 3 A bottom view of the object-retrieving mechanism of the present invention;

[0024] Figure 4 This is a schematic structural diagram of the expansion cavity of the present invention;

[0025] Figure 5 It is a cross-sectional view of the housing of the present invention;

[0026] Figure 6 For the present invention Figure 5 A magnified view of the structure at center A;

[0027] Figure 7 It is a schematic diagram of the oblique ring structure of the present invention.

[0028] In the figure: 1. Y-axis electric guide rail; 2. Z-axis electric guide rail; 3. X-axis electric guide rail; 4. Loading plate; 5. Product positioning seat; 6. Bracket; 7. Pick-up mechanism; 8. Shell; 9. Pick-up tube; 10. Expansion chamber; 11. Airbag belt; 12. Drive assembly; 13. Vertical rod; 14. Piston; 15. Elastic part; 16. Electromagnetic suction cup; 17. Airway; 18. One-way valve; 19. Exhaust hole; 20. Solenoid valve 1; 21. Contact sensor; 22. Annular pressure sensor; 23. Rib; 24. Guide part; 25. Guide groove; 26. Groove; 27. Oblique ring; 28. Solenoid valve 2; 29. ​​Elastic belt.

[0029] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0030] The following describes a spring mounting device provided by the present invention in detail with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0031] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides a spring mounting device, including a Y-axis electric guide rail 1, a Z-axis electric guide rail 2, an X-axis electric guide rail 3 and a product positioning seat 5, wherein the Y-axis electric guide rail 1 is fixed on a workbench, the Z-axis electric guide rail 2 is mounted on the Y-axis electric guide rail 1, the X-axis electric guide rail 3 is fixed on the workbench and is located below the Y-axis electric guide rail 1, a loading tray 4 is mounted on the X-axis electric guide rail 3, the product positioning seat 5 is mounted on the X-axis electric guide rail 3 through an L-shaped rod, and a bracket 6 is mounted on the Z-axis electric guide rail 2, and further includes:

[0032] The picking mechanism 7 includes a shell 8 fixed to the bottom of the bracket 6, and the bottom of the shell 8 is connected to the picking tube 9. The surface of the picking tube 9 is provided with an expansion chamber 10, and the inner wall of the expansion chamber 10 is fixed with an airbag belt 11. A driving component 12 is provided inside the shell 8. The driving component 12 is used to drive the airbag belt 11 to expand outward. After the picking tube 9 is inserted into the spring, the driving component 12 can control the airbag belt 11 to expand outward in the expansion chamber 10. By utilizing the flexible characteristics of the airbag belt 11, the spring is firmly fixed to the outside of the picking tube 9 in a non-rigid extrusion manner. This method avoids the traditional hard clamping causing scratches, deformation and other damage to the spring surface, and effectively protects the structural integrity and elastic properties of the spring. At the same time, the Y-axis electric guide 1, the Z-axis electric guide 2 and the X-axis electric guide 3 constitute a three-dimensional motion system, which can realize the precise positioning of the picking mechanism 7 in space, ensure that the spring can be accurately installed in the corresponding position of the product positioning seat 5, and significantly improve the qualified rate and consistency of product assembly.

[0033] like Figures 1-6As shown, in this embodiment, the driving assembly 12 includes a vertical rod 13 that runs through the bottom of the extraction tube 9, the inner wall of the shell 8 is slidably connected to the piston 14, the top of the vertical rod 13 is fixed to the bottom of the piston 14, and a number of elastic members 15 are fixed between the top of the piston 14 and the top of the inner wall of the shell 8. A contact sensor 21 is fixed to the top of the inner wall of the shell 8, and a number of electromagnetic suction cups 16 are fixed to the top of the inner wall of the shell 8. The elastic member 15 is sleeved on the surface of the electromagnetic suction cup 16. An air duct 17 is provided in the wall thickness of the shell 8 and the extraction tube 9. The bottom end is connected to the expansion chamber 10, the top of the airway 17 is connected to the shell 8, the top of the airway 17 is set on the inner wall of the shell 8 near the top position, the shell 8 is inlaid with a solenoid valve 20, the solenoid valve 20 is used to control whether the airway 17 is connected, the top of the shell 8 is provided with an air inlet connected to the shell 8, a one-way valve 18 is provided in the air inlet, the one-way valve 18 is used to prevent the gas from being discharged from the air inlet, and an exhaust hole 19 is provided below the solenoid valve 20, the exhaust hole 19 is connected to the airway 17, and the side of the shell 8 and located at the exhaust A solenoid valve 28 is fixed at the air hole 19. The solenoid valve 28 is used to control whether the exhaust hole 19 is connected. The contact sensor 21 is electrically connected to the electromagnetic suction cup 16. The contact sensor 21 is electrically connected to the solenoid valve 1 20 and the solenoid valve 2 28 respectively. When the object-picking mechanism 7 moves downward, the vertical rod 13 touches the bottom and pushes the piston 14 to move upward to compress the elastic member 15, so that the air pressure in the shell 8 increases. When the contact sensor 21 detects that the piston 14 is in place, the solenoid valve 1 20 is triggered to open, and the high-pressure gas flows into the expansion chamber 10 through the airway 17, driving the airbag belt 1 1 expands and fixes the spring; at the same time, the electromagnetic suction cup 16 is controlled to absorb the piston 14 to maintain the expansion state of the airbag belt 11. After the spring is installed, the electromagnetic suction cup 16 is powered off to release the piston 14, and the solenoid valve 28 is opened to discharge the gas in the expansion chamber 10 through the exhaust hole 19 to reset the airbag belt 11. The one-way valve 18 ensures that the gas can only flow into the shell 8 in one direction to maintain the internal air pressure balance. The entire drive assembly 12 works together with multiple components to achieve automatic and precise control of spring capture, fixation, and release, reducing manual intervention and improving installation efficiency and stability.

[0034] like Figure 3-Figure 6As shown, in this embodiment, an annular pressure sensor 22 is fixed to the bottom of the shell 8, and the annular pressure sensor 22 is sleeved on the surface of the extraction tube 9. The annular pressure sensor 22 is electrically connected to the solenoid valve 20. When the extraction tube 9 is inserted into the spring, the top of the spring contacts the annular pressure sensor 22. The theoretical elastic force value can be calculated according to the spring compression and elastic modulus, and is input into the control computer in advance. The annular pressure sensor 22 detects the actual force of the spring in real time. If the detected value exceeds the allowable error range of the calculated value, it means that the spring has quality problems such as insufficient elasticity or excessive strength. At this time, the system controls the extraction mechanism 7 to withdraw and does not perform the grabbing action; if the value is within the error range, the solenoid valve 20 is triggered to start the expansion of the airbag belt 11. In this way, online detection and screening of the spring quality are realized, and unqualified springs are prevented from entering the assembly link, thereby ensuring product quality from the source and improving the overall production yield.

[0035] like Figure 5 As shown, in this embodiment, the elastic member 15 is a spring, which serves as an elastic support between the piston 14 and the top of the inner wall of the shell 8. The elastic member 15 is compressed and stores energy when the piston 14 moves upward, providing power for the reset of the piston 14. When the electromagnetic suction cup 16 releases the piston 14, the spring elastic member 15 recovers its deformation, driving the piston 14 and the vertical rod 13 to move downward, so that the initial air pressure state in the shell 8 is restored to prepare for the next spring removal operation. The elastic member 15 made of spring material has a stable elastic coefficient and good fatigue life, and can maintain stable performance during frequent compression-reset processes, ensuring long-term and reliable operation of the drive component 12.

[0036] like Figure 2-Figure 3 and Figure 5 As shown, in this embodiment, a plurality of ribs 23 are fixed to the middle part of the surface of the airbag belt 11, and a plurality of ribs 23 are arranged in a circular array on the surface of the airbag belt 11. When the airbag belt 11 expands, the ribs 23 are driven to expand outward and get stuck in the inner rings of the spring. Compared with the airbag belt 11 directly contacting the spring, the ribs 23 act on the inner wall of the spring in a point or line contact manner, thereby avoiding the airbag belt 11 from leaving marks on the spring surface due to excessive extrusion, and preventing the marks from affecting the appearance quality and performance of the spring. At the same time, the ribs 23 enhance the friction between the airbag belt 11 and the spring, making the spring more firmly fixed on the retrieval tube 9, and not easy to fall off during transportation and installation, further improving the accuracy and reliability of spring installation.

[0037] like Figure 6As shown, in this embodiment, the surface of the rib 23 is provided with a plurality of grooves 26, and the spacing between the plurality of grooves 26 is the same. The grooves 26 increase the roughness and friction of the surface of the rib 23. When the rib 23 is stuck in the spring, the grooves 26 form a tighter bite with the surface of the spring wire, further improving the clamping force of the spring, and preventing the spring from being displaced or slipping due to shaking, vibration and other factors during transportation. In addition, the evenly distributed grooves 26 help to disperse the pressure of the rib 23 on the spring, avoid local excessive pressure from damaging the spring, and better protect the structural integrity of the spring while ensuring the fixing effect.

[0038] like Figure 6 As shown, in this embodiment, guide parts 24 are provided at both ends of the rib 23, and the angle between the guide part 24 and the rib 23 is ninety degrees. A number of guide grooves 25 are provided on the surface of the retrieval tube 9, and the guide part 24 is movably inserted in the guide groove 25. The cooperation between the guide part 24 and the guide groove 25 provides precise guidance for the expansion and contraction of the rib 23, ensuring that the rib 23 moves smoothly in a predetermined direction under the drive of the airbag belt 11, avoiding the rib 23 from twisting or offsetting, which affects the fixing effect of the spring. At the same time, this structural design limits the range of movement of the rib 23, so that the rib 23 can be accurately stuck in the corresponding position inside the spring after expansion, and can be smoothly returned to the surface of the retrieval tube 9 when resetting, ensuring the consistency and reliability of the action of the retrieval mechanism 7 in grabbing and releasing the spring each time, thereby improving the stability of the equipment operation.

[0039] like Figure 5 As shown, in this embodiment, the bottom of the vertical rod 13 is a curved surface setting. The curved surface design at the bottom of the vertical rod 13 can guide the spring into the picking tube 9 more smoothly when the picking mechanism 7 descends to contact the spring, reducing the collision and jamming between the spring and the bottom of the vertical rod 13. The curved surface structure can make the spring evenly stressed when contacting the vertical rod 13, avoiding deformation or damage of the spring due to local stress concentration, and at the same time reducing the risk of the spring being stuck between the vertical rod 13 and the picking tube 9, thereby improving the smoothness and success rate of the spring picking process and ensuring the continuous and stable operation of the equipment.

[0040] like Figure 2-Figure 5 As shown, in this embodiment, an elastic band 29 is fixed at the bottom edge of the taking tube 9, and the bottom of the vertical rod 13 is against the surface of the elastic band 29. During the spring taking process, the vertical rod 13 presses down the elastic band 29 to deform it into a cone. The conical elastic band 29 forms a guide surface, which further guides the spring. Compared with simply relying on the curved surface of the vertical rod 13, the flexible guidance of the elastic band 29 can better adapt to the shape and position deviation of springs of different specifications, and more effectively avoid the spring from being stuck between the taking tube 9 and the vertical rod 13.

[0041] like Figure 3-Figure 7As shown, in this embodiment, an oblique ring 27 is fixedly sleeved on the surface of the collecting tube 9, and the top of the oblique ring 27 is arranged below the annular pressure sensor 22. The inclined surface of the oblique ring 27 can guide the top of the spring, so that the spring can more easily adjust its posture and fit completely on the bottom of the annular pressure sensor 22 when the collecting tube 9 is inserted, thereby avoiding the spring from being stuck in the gap between the annular pressure sensor 22 and the collecting tube 9 due to angle deviation, and ensuring that the annular pressure sensor 22 can accurately detect the spring elastic force.

[0042] Working principle: Install the spring-loaded carrier 4 on the X-axis electric guide 3, fix the product on the product positioning seat 5, then drive the Z-axis electric guide 2 to move on the Y-axis through the Y-axis electric guide 1, and drive the carrier 4 to move on the X-axis through the X-axis electric guide 3 until the picking mechanism 7 is located above the spring in the carrier 4. At the same time, install the picking mechanism 7 that matches the spring model. Then start the Z-axis electric guide 2, which will drive the bracket 6 to move downward, and the bracket 6 will drive the picking mechanism 7 to move downward;

[0043] During the downward movement of the picking mechanism 7, the elastic band 29 squeezed into a cone shape by the vertical rod 13 first contacts the spring, and the spring is guided by the tapered elastic band 29 to prevent the spring from being stuck at the vertical rod 13 and the bottom of the picking tube 9. When the elastic band 29 contacts the bottom of the spring on the surface of the loading plate 4, the spring is sleeved on the surface of the picking tube 9, and the top of the spring contacts the bottom of the annular pressure sensor 22. The top of the spring can be guided by the oblique ring 27 so that the top of the spring can completely fit into the bottom of the annular pressure sensor 22, avoiding the spring from being stuck in the gap between the annular pressure sensor 22 and the picking tube 9. Then the bracket 6 continues to move downward, and the vertical rod 13 is against the loading plate 4 at this time. The vertical rod 13 does not move, the housing 8 and the picking tube 9 move downward, and the contact sensor 21 approaches the direction of the piston 14 until the contact sensor 21 fits into the top of the piston 14;

[0044] During this process, from the time the spring contacts the annular pressure sensor 22 until the contact sensor 21 abuts the top of the piston 14, the compression amount of the spring is known, and the elastic modulus of the spring is known, so the spring force at this time can be calculated. If the value displayed by the annular pressure sensor 22 at this time is less than or greater than the allowable error range of the calculated value, it means that the spring has a defect. At this time, the Z-axis electric guide rail 2 controls the picking mechanism 7 to move upward out of the interior of the spring and move again to the next spring.

[0045] When the value on the annular pressure sensor 22 is within the calculated allowable error range, the solenoid valve 20 is activated. Prior to this, after the piston 14 moves to the top of the inner wall of the shell 8, the pressure inside the shell 8 increases. After the solenoid valve 20 is activated, the gas in the shell 8 will flow from the airway 17 into the interior of the expansion chamber 10. The pressure inside the expansion chamber 10 increases, the airbag belt 11 will expand outward, and the airbag belt 11 mechanism will drive the rib 23 to move outward. The rib 23 will drive the guide part 24 to slide inside the guide groove 25 until the rib 23 fits inside the spring. At this time, The spring is clamped on the surface of the extraction tube 9. At the same time, when the contact sensor 21 senses that the piston 14 is attached to its own surface, the contact sensor 21 issues a command to control the electromagnetic chuck 16 to start through the central processor, magnetically attracting the piston 14. Then, the Z-axis electric guide rail 2 drives the extraction mechanism 7 to move upward, thereby driving the spring upward. Then, through the cooperation of the Y-axis electric guide rail 1, the Z-axis electric guide rail 2 and the X-axis electric guide rail 3, the spring is moved to the top of the product in the product positioning seat 5, and then the Z-axis electric guide rail 2 places the spring in the product.

[0046] After the spring is placed, the electromagnetic suction cup 16 contacts the magnetic attraction of the piston 14, and the electromagnetic valve 2 28 is activated, and the high-pressure gas in the expansion chamber 10 is discharged through the air channel 17 and the exhaust hole 19. The airbag belt 11 drives the rib 23 to reset, and the Z-axis electric guide rail 2 drives the picking mechanism 7 to move upward as a whole. After the bottom of the vertical rod 13 is separated from the product, the elastic member 15 drives the piston 14 and the vertical rod 13 to move downward. At this time, the gas enters the housing 8 from the one-way valve 18. At this time, the electromagnetic valve 1 20 and the electromagnetic valve 2 28 are both in the closed state;

[0047] Before the rib 23 is removed from the spring, the spring is in a compressed state. After the rib 23 is removed from the spring, the top of the spring is pressed against the annular pressure sensor 22, so the spring can only deform downward. At this time, the spring's elastic force allows the spring to be installed more accurately on the product, avoiding defects in the spring installation.

[0048] Then, the picking mechanism 7 is moved to the position of the next spring again, and the steps of taking out and installing the spring are continued.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A spring mounting device, comprising a Y-axis electric guide rail (1), a Z-axis electric guide rail (2), an X-axis electric guide rail (3) and a product positioning seat (5), wherein the Y-axis electric guide rail (1) is fixed on a workbench, the Z-axis electric guide rail (2) is mounted on the Y-axis electric guide rail (1), the X-axis electric guide rail (3) is fixed on the workbench and is located below the Y-axis electric guide rail (1), a loading plate (4) is mounted on the X-axis electric guide rail (3), the product positioning seat (5) is mounted on the X-axis electric guide rail (3) through an L-shaped rod, and a bracket (6) is mounted on the Z-axis electric guide rail (2), characterized in that: Also includes: A retrieving mechanism (7), wherein the retrieving mechanism (7) includes a shell (8) fixed to the bottom of a bracket (6), the bottom of the shell (8) is connected to a retrieving tube (9), an expansion chamber (10) is provided on the surface of the retrieving tube (9), an airbag belt (11) is fixed to the inner wall of the expansion chamber (10), a plurality of ribs (23) are fixed to the middle of the surface of the airbag belt (11), and a plurality of ribs (23) are arranged in a circumferential array on the surface of the airbag belt (11), a driving component (12) is provided inside the shell (8), and the driving component (12) is used to drive the airbag belt (11) to expand outward; The driving assembly (12) includes a vertical rod (13) that is movable and passes through the bottom of the extraction tube (9), a piston (14) is slidably connected to the inner wall of the shell (8), the top of the vertical rod (13) is fixed to the bottom of the piston (14), a plurality of elastic members (15) are fixed between the top of the piston (14) and the top of the inner wall of the shell (8), a contact sensor (21) is fixed to the top of the inner wall of the shell (8), a plurality of electromagnetic suction cups (16) are fixed to the top of the inner wall of the shell (8), the elastic member (15) is sleeved on the surface of the electromagnetic suction cup (16), an airway (17) is provided in the wall thickness of the shell (8) and the extraction tube (9), the bottom end of the airway (17) is connected to the expansion chamber (10), the top end of the airway (17) is connected to the shell (8), and the top end of the airway (17) is provided on the inner wall of the shell (8). Near the top, the shell of the housing (8) is inlaid with a solenoid valve 1 (20), which is used to control whether the airway (17) is connected. The top of the housing (8) is provided with an air inlet connected to the inside of the housing (8), and a one-way valve (18) is provided in the air inlet, which is used to prevent gas from being discharged from the air inlet. An exhaust hole (19) is provided below the solenoid valve 1 (20), which is connected to the airway (17). A solenoid valve 2 (28) is fixed on the side of the housing (8) and located at the exhaust hole (19), which is used to control whether the exhaust hole (19) is connected. The contact sensor (21) is electrically connected to the electromagnetic suction cup (16), and the contact sensor (21) is electrically connected to the solenoid valve 1 (20) and the solenoid valve 2 (28), respectively.

2. The spring mounting device according to claim 1, wherein: An annular pressure sensor (22) is fixed to the bottom of the housing (8), and the annular pressure sensor (22) is sleeved on the surface of the extraction barrel (9). The annular pressure sensor (22) is electrically connected to the electromagnetic valve (20).

3. The spring mounting device according to claim 1, wherein: The elastic member (15) is a spring.

4. The spring mounting device according to claim 1, wherein: The surface of the rib (23) is provided with a plurality of grooves (26), and the spacing between the plurality of grooves (26) is the same.

5. The spring mounting device according to claim 1, wherein: Both ends of the rib (23) are provided with a guide portion (24), and the included angle between the guide portion (24) and the rib (23) is ninety degrees. The surface of the extraction tube (9) is provided with a plurality of guide grooves (25), and the guide portion (24) is movably inserted into the guide groove (25).

6. The spring mounting device according to claim 1, wherein: The bottom of the vertical rod (13) is arranged as a curved surface.

7. The spring mounting device according to claim 1, wherein: An elastic band (29) is fixed to the bottom edge of the extraction cylinder (9), and the bottom of the vertical rod (13) abuts against the surface of the elastic band (29).

8. The spring mounting device according to claim 1, wherein: An oblique ring (27) is fixedly sleeved on the surface of the extraction cylinder (9), and the top of the oblique ring (27) is arranged below the annular pressure sensor (22).

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