Spring mounting device

Abstract

The invention provides a spring mounting device, and belongs to the technical field of spring mounting. Comprising a Y-axis electric guide rail, a Z-axis electric guide rail, an X-axis electric guide rail and a product positioning base, the Y-axis electric guide rail is fixed to 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 to the workbench and located below the Y-axis electric guide rail, and a carrying disc is installed on the X-axis electric guide rail. According to the spring taking device, by arranging the shell, the object taking barrel, the air bag belt and the driving assembly, when a spring is taken, the object taking barrel is inserted into the spring, the air bag belt is driven by the driving assembly to expand outwards, through flexible extrusion of the air bag belt, the spring is fixed to the outer side of the object taking barrel, meanwhile, the spring is prevented from being damaged, and protection on the spring is achieved; and secondly, the Y-axis electric guide rail, the Z-axis electric guide rail and the X-axis electric guide rail are matched, so that the spring is more accurately mounted, and the qualified rate of assembled products is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of spring installation, and particularly relates 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 devices. These elastic components, due to their high elasticity and high-precision characteristics, undertake key functions such as connection conduction and pressure buffering. Currently, the assembly of tiny springs still mainly relies on manual operation. During the manual operation process, it is easy to cause damages such as spring deformation and surface scratching. In electronic products such as smart phones and wearable devices that have strict requirements for 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 trigger systematic problems such as intermittent malfunction of the device and shortened service life, directly affecting the market competitiveness and user experience of the terminal product. Therefore, the present application provides a spring installation device to meet the requirements. Summary of the Invention

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

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A spring installation 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 on the 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, a carrier plate is installed on the X-axis electric guide rail, the product positioning seat is installed on the X-axis electric guide rail through an L-shaped rod, a bracket is installed on the Z-axis electric guide rail, and further includes: An object-taking mechanism, the object-taking mechanism includes a housing fixed to the bottom of the bracket, the bottom of the housing is communicated with an object-taking cylinder, an expansion cavity is provided on the surface of the object-taking cylinder, an airbag belt is fixed to the inner wall of the expansion cavity, and a driving component is arranged inside the housing, and the driving component is used to drive the airbag belt to expand outwards.

[0005] Preferably, the driving assembly includes a vertical rod that movably penetrates the bottom of the object-taking cylinder. A piston is slidably connected to the inner wall of the housing. The top of the vertical rod is fixed to the bottom of the piston. A plurality of elastic members are fixed between the top of the piston and the top of the inner wall of the housing. A contact sensor is fixed to the top of the inner wall of the housing. A plurality of electromagnetic chucks are fixed to the top of the inner wall of the housing. The elastic members are sleeved on the surfaces of the electromagnetic chucks. An air duct is provided in the wall thickness of the housing and the object-taking cylinder. The bottom end of the air duct is communicated with the expansion chamber, and the top end of the air duct is communicated with the housing. The top end of the air duct is provided at a position close to the top of the inner wall of the housing. A solenoid valve I is embedded in the outer shell of the housing. The solenoid valve I is used to control whether the air duct is communicated. An air inlet hole communicated with the inside of the housing is provided at the top of the housing. A check valve is provided in the air inlet hole. The check valve is used to prevent gas from discharging from the air inlet hole. An exhaust hole is provided below the solenoid valve I. The exhaust hole is communicated with the air duct. A solenoid valve II is fixed to the side of the housing at the position of the exhaust hole. The solenoid valve II is used to control whether the exhaust hole is communicated. The contact sensor is electrically connected to the electromagnetic chucks, and the contact sensor is electrically connected to the solenoid valve I and the solenoid valve II respectively.

[0006] Preferably, a ring-shaped pressure sensor is fixed to the bottom of the housing. The ring-shaped pressure sensor is sleeved on the surface of the object-taking cylinder. The ring-shaped pressure sensor is electrically connected to the solenoid valve I.

[0007] Preferably, the elastic member is a spring.

[0008] Preferably, a plurality of ribs are fixed to the middle of the surface of the airbag belt. The plurality of ribs are arranged in a circumferential array on the surface of the airbag belt.

[0009] Preferably, a plurality of grooves are provided on the surface of the rib. The distances between the plurality of grooves are the same.

[0010] Preferably, guiding portions are provided at both ends of the rib. The included angle between the guiding portion and the rib is ninety degrees. A plurality of guiding grooves are formed on the surface of the object-taking cylinder. The guiding portions are movably inserted into the guiding grooves.

[0011] Preferably, the bottom of the vertical rod is provided with a curved surface.

[0012] Preferably, an elastic band is fixed to the bottom edge of the object-taking cylinder. The bottom of the vertical rod abuts against the surface of the elastic band.

[0013] Preferably, an inclined ring is fixedly sleeved on the surface of the object-taking cylinder. The top of the inclined ring is provided below the ring-shaped pressure sensor.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting a housing, an object-taking cylinder, an airbag belt, and a driving component, when taking a spring, the object-taking cylinder is inserted into the inside of the spring. The driving component drives the airbag belt to expand outwards. Through the flexible extrusion of the airbag belt, while fixing the spring on the outside of the object-taking cylinder, damage to the spring is avoided, realizing the 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 installation of the spring is more accurate, improving the qualification rate of the assembled product.

[0015] By setting an annular pressure sensor, after the object-taking cylinder is inserted into the spring, the annular pressure sensor can detect whether the elastic force of the spring is qualified. If it is qualified, the driving component drives the airbag belt to expand outwards. If it is unqualified, the driving component will not drive the airbag belt to expand outwards, realizing the distinction between good and bad springs and further improving the qualification rate of the assembled product.

[0016] By setting ribs, a guiding part, and a guiding groove, during the process of the airbag belt expanding outwards, the airbag belt will drive the ribs to expand outwards. The ribs are clamped inside the spring, avoiding the airbag belt from contacting the spring and causing indentations, which may prevent the spring from falling smoothly. Once again, the installation of the spring is made more accurate, thereby improving the qualification rate of the assembled product.

[0017] By setting an elastic belt, during the process of taking the spring, the bottom of the object-taking cylinder first approaches the top of the spring. At this time, the vertical rod squeezes the elastic belt into a conical shape. Through the inclined surface of the cone, the spring is guided, avoiding the spring from being stuck between the object-taking cylinder and the vertical rod, and improving the smoothness during the process of taking the spring. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the object-taking mechanism of the present invention; Figure 3 It is a bottom view of the object-taking mechanism of the present invention; Figure 4 It is a schematic diagram of the structure at the expansion cavity of the present invention; Figure 5 It is a sectional view of the housing of the present invention; Figure 6 For the present invention Figure 5 The enlarged view of the structure at A in Figure 7 It is a schematic diagram of the inclined ring structure of the present invention.

[0019] In the figure: 1. Y-axis electric guide rail; 2. Z-axis electric guide rail; 3. X-axis electric guide rail; 4. Object carrier; 5. Product positioning seat; 6. Bracket; 7. Object picking mechanism; 8. Housing; 9. Object picking cylinder; 10. Expansion cavity; 11. Airbag belt; 12. Driving assembly; 13. Vertical rod; 14. Piston; 15. Elastic member; 16. Electromagnetic chuck; 17. Air passage; 18. Check valve; 19. Exhaust hole; 20. Solenoid valve 1; 21. Contact sensor; 22. Annular pressure sensor; 23. Rib; 24. Guide portion; 25. Guide groove; 26. Groove; 27. Inclined ring; 28. Solenoid valve 2; 29. Elastic belt.

[0020] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included within the scope of the appended claims. Detailed implementation manners

[0021] The following describes in detail a spring installation device provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0022] As Figures 1-7 shown, an embodiment of the present invention provides a spring installation 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. The Y-axis electric guide rail 1 is fixed on the workbench, the Z-axis electric guide rail 2 is installed 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, an object carrier 4 is installed on the X-axis electric guide rail 3, the product positioning seat 5 is installed on the X-axis electric guide rail 3 through an L-shaped rod, a bracket 6 is installed on the Z-axis electric guide rail 2, and further includes: The object taking mechanism 7 includes a housing 8 fixed to the bottom of the bracket 6. The bottom of the housing 8 is communicated with an object taking cylinder 9. An expansion cavity 10 is formed on the surface of the object taking cylinder 9. An airbag belt 11 is fixed to the inner wall of the expansion cavity 10. A driving assembly 12 is arranged inside the housing 8. The driving assembly 12 is used to drive the airbag belt 11 to expand outwards. After the object taking cylinder 9 is inserted into the spring, the driving assembly 12 can control the airbag belt 11 to expand outwards in the expansion cavity 10. By utilizing the flexible characteristics of the airbag belt 11, the spring is firmly fixed outside the object taking cylinder 9 in a non-rigid extrusion manner. This method avoids scratches, deformation and other damages to the surface of the spring caused by traditional hard clamping, effectively protects the structural integrity and elastic performance of the spring. At the same time, the Y-axis electric guide rail 1, the Z-axis electric guide rail 2 and the X-axis electric guide rail 3 form a three-dimensional motion system, which can realize the precise positioning of the object taking mechanism 7 in space, ensure that the spring can be accurately installed at the corresponding position of the product positioning seat 5, and significantly improve the qualification rate and consistency of product assembly.

[0023] Such as Figures 1-6As shown, in this embodiment, the driving component 12 includes a vertical rod 13 that movably penetrates through the bottom of the object-taking cylinder 9. A piston 14 is slidably connected to the inner wall of the housing 8. The top of the vertical rod 13 is fixed to the bottom of the piston 14. A number of elastic members 15 are fixed between the top of the piston 14 and the top of the inner wall of the housing 8. A contact sensor 21 is fixed to the top of the inner wall of the housing 8. A number of electromagnetic chucks 16 are fixed to the top of the inner wall of the housing 8. The elastic members 15 are sleeved on the surface of the electromagnetic chucks 16. An air passage 17 is provided in the wall thickness of the housing 8 and the object-taking cylinder 9. The bottom end of the air passage 17 is communicated with the expansion cavity 10, and the top end of the air passage 17 is communicated with the housing 8. The top end of the air passage 17 is provided at a position close to the top of the inner wall of the housing 8. A solenoid valve 20 is embedded in the outer shell of the housing 8. The solenoid valve 20 is used to control whether the air passage 17 is communicated. An air inlet hole communicated with the inside of the housing 8 is provided at the top of the housing 8. A one-way valve 18 is provided in the air inlet hole. The one-way valve 18 is used to prevent gas from discharging from the air inlet hole. An exhaust hole 19 is provided below the solenoid valve 20. The exhaust hole 19 is communicated with the air passage 17. A solenoid valve 28 is fixed to the side of the housing 8 and at the position of the exhaust hole 19. The solenoid valve 28 is used to control whether the exhaust hole 19 is communicated. The contact sensor 21 is electrically connected to the electromagnetic chuck 16. The contact sensor 21 is respectively electrically connected to the solenoid valve 20 and the solenoid valve 28. During the downward movement of the object-taking mechanism 7, after the vertical rod 13 touches the bottom, it pushes the piston 14 to move upward and compress the elastic members 15, so that the air pressure in the housing 8 increases. When the contact sensor 21 detects that the piston 14 is in place, it triggers the solenoid valve 20 to open. The high-pressure gas flows into the expansion cavity 10 through the air passage 17, driving the airbag belt 11 to expand and fix the spring; at the same time, it controls the electromagnetic chuck 16 to adsorb the piston 14 to maintain the expanded state of the airbag belt 11. After the spring is installed, the electromagnetic chuck 16 is powered off to release the piston 14, and the solenoid valve 28 is opened to discharge the gas in the expansion cavity 10 through the exhaust hole 19, so that the airbag belt 11 returns to its original position. The one-way valve 18 ensures that the gas can only flow into the housing 8 unidirectionally, maintaining the internal air pressure balance. The entire driving component 12 realizes the automatic and precise control of spring grasping, fixing, and releasing through the coordinated work of multiple components, reduces manual intervention, and improves the installation efficiency and stability.

[0024] As Figures 3-6As shown in the figure, in this embodiment, an annular pressure sensor 22 is fixed to the bottom of the housing 8. The annular pressure sensor 22 is sleeved on the surface of the object-taking cylinder 9 and is electrically connected to the first electromagnetic valve 20. When the object-taking cylinder 9 is inserted into the spring, the top of the spring contacts the annular pressure sensor 22. According to the spring compression amount and elastic modulus, the theoretical elastic force value can be calculated and input into the control computer in advance. The annular pressure sensor 22 detects the actual force on the spring in real time. If the detected value exceeds the allowable error range of the calculated value, it indicates that there are quality problems such as insufficient or excessive elasticity of the spring. At this time, the system controls the object-taking mechanism 7 to withdraw and does not perform the grasping action. If the value is within the error range, the first electromagnetic valve 20 is triggered to start the inflation of the airbag belt 11. In this way, the on-line detection and screening of the spring quality are realized, the unqualified springs are prevented from entering the assembly link, the product quality is guaranteed from the source, and the overall production yield is improved.

[0025] As Figure 5 shown in the figure, in this embodiment, the elastic member 15 is a spring, which serves as an elastic support between the piston 14 and the top inner wall of the housing 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 chuck 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 is restored in the housing 8, preparing for the next spring-taking 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 the long-term reliable operation of the drive assembly 12.

[0026] As Figures 2-3 and Figure 5 shown in the figure, in this embodiment, a plurality of ribs 23 are fixed to the middle of the surface of the airbag belt 11. The plurality of ribs 23 are arranged in a circumferential array on the surface of the airbag belt 11. When the airbag belt 11 expands, it drives the ribs 23 to expand outward and catch into the inner coils 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, preventing 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 service 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 object-taking cylinder 9 and not easily falling off during handling and installation, further improving the accuracy and reliability of spring installation.

[0027] As Figure 6As shown in the figure, in this embodiment, several grooves 26 are provided on the surface of the rib 23. The distance between several 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 inserted into the spring, the grooves 26 form a tighter bite with the surface of the spring wire, further improving the clamping force on the spring and preventing the spring from being displaced or slipping due to factors such as shaking and vibration during handling. In addition, the evenly distributed grooves 26 help to disperse the pressure of the rib 23 on the spring, avoid excessive local pressure from damaging the spring, and better protect the structural integrity of the spring while ensuring the fixing effect.

[0028] As Figure 6 shown in the figure, in this embodiment, guiding parts 24 are provided at both ends of the rib 23. The angle between the guiding part 24 and the rib 23 is ninety degrees. Several guiding grooves 25 are provided on the surface of the object taking cylinder 9. The guiding part 24 is movably inserted into the guiding groove 25. The cooperation between the guiding part 24 and the guiding groove 25 provides precise guidance for the expansion and contraction of the rib 23, ensuring that the rib 23 moves smoothly along a predetermined direction under the drive of the airbag belt 11, avoiding the rib 23 from being twisted or offset, which affects the fixing effect on the spring. At the same time, this structural design limits the movement range of the rib 23, enabling the rib 23 to accurately insert into the corresponding position inside the spring after expansion and smoothly retract to the surface of the object taking cylinder 9 during reset, ensuring the consistency and reliability of the actions of the object taking mechanism 7 for grasping and releasing the spring each time, and improving the stability of the equipment operation.

[0029] As Figure 5 shown in the figure, in this embodiment, the bottom of the vertical rod 13 is provided with a curved surface. The curved surface design at the bottom of the vertical rod 13 can more smoothly guide the spring into the object taking cylinder 9 when the object taking 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 receive uniform force when contacting the vertical rod 13, avoiding spring deformation or damage caused by local stress concentration, and at the same time reducing the risk of the spring being stuck between the vertical rod 13 and the object taking cylinder 9, improving the smoothness and success rate of the spring taking process, and ensuring the continuous and stable operation of the equipment.

[0030] As Figures 2-5 shown in the figure, in this embodiment, an elastic band 29 is fixed at the bottom edge of the object taking cylinder 9. The bottom of the vertical rod 13 abuts against the surface of the elastic band 29. During the spring taking process, the vertical rod 13 presses down on the elastic band 29 to make it deform into a conical shape. The conical elastic band 29 forms a guiding surface, which plays a further guiding role for the spring. Compared with simply relying on the curved surface of the vertical rod 13, the flexible guiding of the elastic band 29 can better adapt to the shape and position deviation of different specifications of springs, and more effectively avoid the spring from being stuck between the object taking cylinder 9 and the vertical rod 13.

[0031] As Figures 3-7As shown, in this embodiment, an inclined ring 27 is fixedly sleeved on the surface of the object taking cylinder 9. The top of the inclined ring 27 is arranged below the annular pressure sensor 22. The inclined surface of the inclined ring 27 can guide the top of the spring, so that when the spring is inserted by the object taking cylinder 9, it is easier to adjust its posture and fully fit against the bottom of the annular pressure sensor 22, preventing the spring from getting stuck in the gap between the annular pressure sensor 22 and the object taking cylinder 9, and ensuring that the annular pressure sensor 22 can accurately detect the spring force.

[0032] Working principle: Install the carrier plate 4 with the spring on the X-axis electric guide rail 3, fix the product on the product positioning seat 5, then drive the Z-axis electric guide rail 2 to move on the Y-axis by the Y-axis electric guide rail 1, and drive the carrier plate 4 to move on the X-axis by the X-axis electric guide rail 3 until the object taking mechanism 7 is located above the spring in the carrier plate 4. At the same time, install the object taking mechanism 7 matching the spring model, and then start the Z-axis electric guide rail 2. The Z-axis electric guide rail 2 will drive the support 6 to move downward, and the support 6 will drive the object taking mechanism 7 to move downward. During the downward movement of the object taking mechanism 7, the elastic belt 29 squeezed into a cone by the vertical rod 13 first contacts the spring. The spring is guided by the conical elastic belt 29 to prevent the spring from getting stuck at the bottom of the vertical rod 13 and the object taking cylinder 9. When the elastic belt 29 contacts the bottom of the spring on the surface of the carrier plate 4, at this time the spring is sleeved on the surface of the object taking cylinder 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 inclined ring 27 to fully fit against the bottom of the annular pressure sensor 22, preventing the spring from getting stuck in the gap between the annular pressure sensor 22 and the object taking cylinder 9. Then the support 6 continues to move downward, and the vertical rod 13 abuts against the carrier plate 4 at this time. The vertical rod 13 remains stationary, and the housing 8 and the object taking cylinder 9 move downward. The contact sensor 21 approaches the piston 14 until the contact sensor 21 fits against the top of the piston 14. During this process, from the moment the spring contacts the annular pressure sensor 22 until the contact sensor 21 fits against 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 is less than or greater than the allowable error range of the calculated value at this time, it means that the spring has a defect. At this time, the Z-axis electric guide rail 2 controls the object taking mechanism 7 to move upward out of the inside of the spring and then move to the next spring. 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. 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; 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. 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.

[0033] 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 installation 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). The Y-axis electric guide rail (1) is fixed on a workbench. The Z-axis electric guide rail (2) is installed 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 load tray (4) is installed on the X-axis electric guide rail (3). The product positioning seat (5) is installed on the X-axis electric guide rail (3) through an L-shaped rod. A bracket (6) is installed on the Z-axis electric guide rail (2), and it is characterized in that, Further included are: An object fetching mechanism (7), the object fetching mechanism (7) includes a housing (8) fixed to the bottom of a bracket (6), a fetching cylinder (9) is communicated with the bottom of the housing (8), an expansion cavity (10) is formed on the surface of the fetching cylinder (9), an airbag belt (11) is fixed to the inner wall of the expansion cavity (10), a driving assembly (12) is arranged inside the housing (8), and the driving assembly (12) is used to drive the airbag belt (11) to expand outwards.

2. The spring mounting device according to claim 1, characterized in that, The driving assembly (12) includes a vertical rod (13) movably penetrating through the bottom of the fetching cylinder (9), a piston (14) is slidably connected to the inner wall of the housing (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 housing (8), a contact sensor (21) is fixed to the top of the inner wall of the housing (8), a plurality of electromagnetic chucks (16) are fixed to the top of the inner wall of the housing (8), the elastic members (15) are sleeved on the surface of the electromagnetic chucks (16), an air passage (17) is arranged inside the wall thickness of the housing (8) and the fetching cylinder (9), the bottom end of the air passage (17) is communicated with the expansion cavity (10), the top end of the air passage (17) is communicated with the housing (8), the top end of the air passage (17) is arranged at a position close to the top of the inner wall of the housing (8), a solenoid valve I (20) is inlaid on the outer shell of the housing (8), and the solenoid valve I (20) is used to control whether the air passage (17) is communicated or not. An air inlet hole communicated with the inside of the housing (8) is arranged at the top of the housing (8), a one-way valve (18) is arranged inside the air inlet hole, and the one-way valve (18) is used to prevent gas from discharging from the air inlet hole. An exhaust hole (19) is arranged below the solenoid valve I (20), and the exhaust hole (19) is communicated with the air passage (17). A solenoid valve II (28) is fixed to the side surface of the housing (8) at the position of the exhaust hole (19), and the solenoid valve II (28) is used to control whether the exhaust hole (19) is communicated or not. The contact sensor (21) is electrically connected with the electromagnetic chucks (16), and the contact sensor (21) is electrically connected with the solenoid valve I (20) and the solenoid valve II (28) respectively.

3. The spring mounting device according to claim 2, characterized in that, A ring-shaped pressure sensor (22) is fixed to the bottom of the housing (8), the ring-shaped pressure sensor (22) is sleeved on the surface of the fetching cylinder (9), and the ring-shaped pressure sensor (22) is electrically connected with the solenoid valve I (20).

4. The spring mounting device according to claim 2, characterized in that, The elastic member (15) is a spring.

5. The spring mounting device according to claim 1, characterized in that, A plurality of ribs (23) are fixed to the middle of the surface of the airbag belt (11), and the plurality of ribs (23) are arranged in a circumferential array on the surface of the airbag belt (11).

6. The spring mounting device according to claim 5, characterized in that, A plurality of grooves (26) are arranged on the surface of the rib (23), and the distances between the plurality of grooves (26) are the same.

7. The spring mounting device according to claim 5, characterized in that Guide parts (24) are arranged at both ends of the rib (23), the included angle between the guide part (24) and the rib (23) is ninety degrees, and a plurality of guide grooves (25) are formed on the surface of the fetching cylinder (9), and the guide part (24) is movably inserted into the guide groove (25).

8. The spring mounting device according to claim 2, wherein The bottom of the vertical rod (13) is curved.

9. The spring mounting device according to claim 8, characterized in that, An elastic band (29) is fixed at the bottom edge of the object fetching cylinder (9), and the bottom of the vertical rod (13) abuts against the surface of the elastic band (29).

10. The spring mounting device according to claim 3, characterized in that, An inclined ring (27) is fixedly sleeved on the surface of the object fetching cylinder (9), and the top of the inclined ring (27) is arranged below the annular pressure sensor (22).

Images