Fastening mechanism

Abstract

The utility model discloses a fastening mechanism, including: a first mounting plate; at least two groups of locking components, which are respectively slidably mounted on the first mounting plate through a first slide rail; each group of locking components includes a nail suction tube and a screwdriver bit, the nail suction tube is slidably mounted on the first slide rail through a first mounting seat, and the screwdriver bit is slidably mounted on the first slide rail through a second mounting seat; at least two groups of driving components, the driving components and the locking components are connected one-to-one, and the driving components each include a first driving member and a second driving member, the first driving member is mounted on the first mounting plate, and its driving end is connected to the first mounting seat, and the second driving member is mounted on the second mounting seat, and its driving end is connected to the first mounting seat; at least two groups of rotating driving members, and the rotating driving members are connected one-to-one with the screwdriver bit. The fastening mechanism of the utility model includes at least two groups of locking components, which can be driven to absorb screws and lock screws respectively, and can be controlled separately to achieve the locking of different screws and improve assembly efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of automation equipment, and in particular relates to a fastening mechanism. Background Art

[0002] In modern manufacturing, product assembly is an indispensable part of the production process. Especially in precision manufacturing and automated production lines, screw assembly is one of the common fastening methods.

[0003] In the prior art, when a locking assembly is used for screw assembly, since different types of screws need to be frequently replaced to meet different assembly requirements, the module needs to be constantly moved back and forth to pick up and place the screws. This not only increases the workload of the module, but also greatly reduces the assembly efficiency, especially on large-scale, high-efficiency production lines. In order to improve assembly efficiency, some production lines use a method in which multiple locking assemblies work simultaneously. However, this method also has obvious defects. Multiple locking assemblies are usually designed to work synchronously, that is, they perform the same action at the same time. However, in the actual product assembly process, the positions where the screws are locked are often not on the same plane, which requires the fastening mechanism to be able to work at different heights and angles. Due to the limitations of synchronous work, multiple locking assemblies cannot adapt to such a complex assembly environment and cannot achieve efficient assembly. Utility Model Content

[0004] The utility model aims to provide a fastening mechanism which can independently control a plurality of locking components.

[0005] To achieve the above purpose, the fastening mechanism of the utility model comprises:

[0006] a first mounting plate;

[0007] At least two sets of locking components are respectively slidably mounted on the first mounting plate through a first slide rail; each set of the locking components includes a nail suction tube and a screwdriver bit, the nail suction tube is slidably mounted on the first slide rail through a first mounting seat, and the screwdriver bit is slidably mounted on the first slide rail through a second mounting seat;

[0008] At least two sets of drive components, the drive components are connected to the locking components one by one; the drive components include a first drive member and a second drive member, the first drive member is mounted on the first mounting plate, and its drive end is connected to the first mounting seat, and the second drive member is mounted on the second mounting seat, and its drive end is connected to the first mounting seat;

[0009] At least two groups of rotating driving members are mounted on the first mounting plate, and the rotating driving members are connected to the screwdriver bits in a one-to-one correspondence to drive the screwdriver bits to rotate.

[0010] In one embodiment of the fastening mechanism of the utility model, the fixed end of the screwdriver bit is locked on a connecting rod by a locking ring, the outer sleeve of the connecting rod is provided with a seat bearing, the seat bearing is installed on the second mounting seat, the outer sleeve of the connecting rod is provided with a first elastic member, one end of the first elastic member abuts on the locking ring, and the other end abuts on the second step surface of the connecting rod.

[0011] In one embodiment of the fastening mechanism of the utility model, the driving end of the rotating driving member is connected to the first universal joint through a coupling, the first universal joint is connected to a sleeve, a sliding rod is sleeved inside the sleeve, and the sliding rod is connected to the connecting rod through a second universal joint. The sliding rod can move axially in the sleeve and rotate with the rotation of the sleeve.

[0012] In an embodiment of the fastening mechanism of the utility model, the sleeve is a hexagonal sleeve, and the slide rod is a hexagonal slide rod.

[0013] In one embodiment of the fastening mechanism of the present invention, the sleeve is connected to the slide rod by a key.

[0014] In one embodiment of the fastening mechanism of the present invention, the fixed end of the nail suction tube is installed on a first locking piece, a second locking piece is provided on the first mounting seat, a first groove is provided at one end of the second locking piece facing the first locking piece, the first locking piece is threadedly connected to the first groove of the second locking piece to form a vacuum chamber, and the second locking piece has an exhaust hole.

[0015] In an embodiment of the fastening mechanism of the present invention, a first through hole is provided at one end of the second locking member away from the first locking member, and the screwdriver bit extends into the vacuum chamber through the first through hole.

[0016] In one embodiment of the fastening mechanism of the present invention, a third groove connected to the first through hole is provided at one end of the second locking member away from the first locking member, and a fourth groove connected to the first groove is provided at one end of the second locking member facing the first locking member, and a sealing ring is provided in each of the third groove and the fourth groove.

[0017] In an embodiment of the fastening mechanism of the utility model, a second elastic member is disposed inside the vacuum chamber, one end of the second elastic member abuts against the inner wall of the first groove, and the other end abuts against the end of the nail suction tube.

[0018] In one embodiment of the fastening mechanism of the present invention, the first mounting plate is slidably mounted on a second mounting plate via a second slide rail, the second mounting plate is provided with a third driving member, the driving end of the third driving member is connected to the first mounting plate, and the third driving member drives the first mounting plate to slide along the second slide rail.

[0019] In summary, the fastening mechanism of the utility model includes at least two sets of locking components, which can be driven to absorb screws and lock screws respectively, and can be controlled separately to achieve the locking of different screws and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment of the fastening mechanism of the utility model;

[0021] Figure 2 This is a cross-sectional view of a screwdriver bit assembly of an embodiment of the fastening mechanism of the utility model;

[0022] Figure 3 yes Figure 2 Structural diagram of the middle connecting rod;

[0023] Figure 4 yes Figure 2 A cross-sectional view of the middle locking ring;

[0024] Figure 5 yes Figure 2 The structural diagram of the fixed end of the middle screwdriver bit;

[0025] Figure 6 This is a cross-sectional view of the nail suction tube assembly of an embodiment of the fastening mechanism of the utility model;

[0026] Figure 7 yes Figure 6 A cross-sectional view of the first locking member;

[0027] Figure 8 yes Figure 6 A cross-sectional view of the second locking member;

[0028] Fig. 9 yes Figure 6 A cross-sectional view of the middle suction nail tube;

[0029] Fig.10 This is another structural diagram of an embodiment of the fastening mechanism of the utility model;

[0030] In the figure: 100, first mounting plate; 110, first slide rail; 120, second slide rail; 130, front surface; 140, rear surface; 150, left side wall; 160, right side wall; 200, screwdriver; 210, second mounting seat; 220, locking ring; 221, third through hole; 222, second annular groove; 223, third annular groove; 230, connecting rod; 231, first rod portion; 2311, sixth through hole; 232, second rod portion ; 233, third rod portion; 234, fourth rod portion; 235, fifth rod portion; 2351, cylindrical groove; 2352, second through hole; 2353, receiving groove; 2354, first annular groove; 236, first step surface; 237, second step surface; 240, seat bearing; 250, first elastic member; 260, bearing cap; 270, first annular receiving portion; 271, steel ball; 272, second annular receiving portion; 280, clamping portion; 290, retaining ring; 300, nail suction tube; 310, first mounting seat; 320, sliding bearing; 330, first locking member; 331, fourth through hole; 332, fifth through hole; 333, third step surface; 334, connecting portion; 340, second locking member; 341, first groove; 342, second groove; 343, first through hole; 344, third groove; 345, fourth groove; 346, sealing ring; 347, air extraction hole; 348, mounting hole; 349, gasket; 3491, screw; 350, first tube body; 351, second tube body; 352, third tube body; 353, fourth step surface; 354, fifth step surface; 355, adsorption hole; 360, second elastic member; 400, first driving member; 410, connecting member; 500, second driving member; 600, rotating driving member; 610, coupling; 620, first universal joint; 630, sleeve; 640, sliding rod; 650, second universal joint; 700, second mounting plate; 800, third driving member. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] like Figure 1 As shown, the fastening mechanism includes a first mounting plate 100 and at least two sets of locking components slidably mounted on the first mounting plate 100. In this embodiment, for ease of understanding, two sets of locking components are used as an example for description. In other embodiments, more than two sets of locking components may also be provided. Each set of locking components can be driven to independently absorb and lock screws, thereby improving assembly efficiency.

[0033] The two sets of locking components are respectively slidably mounted on the first mounting plate 100 through a first slide rail 110. Each set of locking components includes a screwdriver bit 200 and a nail suction tube 300, the nail suction tube 300 is used to absorb the screw, and the screwdriver bit 200 is used to extend into the nail suction tube 300 and rotate the screw. The nail suction tube 300 is slidably mounted on the first slide rail 110 through a first mounting seat 310, and the screwdriver bit 200 is slidably mounted on the first slide rail 110 through a second mounting seat 210.

[0034] The fastening mechanism also includes two groups of drive components, each of which is connected to the locking components respectively, and the operation of each group of locking components can be controlled separately. Each group of drive components includes a first drive member 400 and a second drive member 500. The first drive member 400 is preferably a cylinder, which is mounted on the first mounting plate 100, and its drive end is connected to the first mounting seat 310. The second drive member 500 is preferably a cylinder, which is mounted on the second mounting seat 210, and its drive end is connected to the first mounting seat 310. The first drive member 400 drives the screwdriver bit 200 and the nail suction tube 300 as a whole to move closer to or away from the screw, and the second drive member 500 drives the screwdriver bit 200 to move separately in the nail suction tube 300 to move closer to or away from the screw.

[0035] The first mounting plate 100 has a front surface 130, a rear surface 140, a left side wall 150 and a right side wall 160. Two first slide rails 110 are respectively mounted on the left side wall 150 and the right side wall 160, and the first driving member 400 is mounted on the rear surface 140 of the first mounting plate 100, and its driving end is connected to the first mounting seat 310 through a connecting member 410. The second driving member 500 is arranged in front of the front surface 130 of the first mounting plate 100, and its driving end is also connected to the connecting member 410. The first slide rail 110 is arranged on the left side wall 150 and the right side wall 160, and the first driving member 400 and the second driving member 500 are respectively arranged on both sides of the first mounting plate 100, so as to optimize the spatial layout.

[0036] like Figure 2 As shown, the fixed end of the screwdriver bit 200 is locked to a connecting rod 230 through a locking ring 220, the connecting rod 230 is provided with a seat bearing 240, the seat bearing 240 is installed on the second mounting seat 210 through a screw, and the connecting rod 230 is provided with a first elastic member 250, one end of the first elastic member 250 abuts against the locking ring 220, and the other end abuts against the second step surface 237 of the connecting rod 230. The connecting rod 230 is provided with a seat bearing 240, which can realize the free rotation of the connecting rod 230 around its own axis, thereby driving the screwdriver bit 200 to rotate and lock the screw.

[0037] like Figure 2 , Figure 3As shown, the connecting rod 230 includes five parts, which are the first rod portion 231, the second rod portion 232, the third rod portion 233, the fourth rod portion 234 and the fifth rod portion 235 from top to bottom. The diameters of the first rod portion 231 to the fourth rod portion 234 gradually increase, and the diameter of the fourth rod portion 234 is greater than the diameter of the fifth rod portion 235. The fourth rod portion 234, the third rod portion 233 and the fifth rod portion 235 respectively form a first step surface 236 and a second step surface 237. The seat bearing 240 is sleeved on the outer surface of the third rod portion 233, and a bearing cap 260 is sleeved on the outer surface of the second rod portion 232 and fixed by a top screw. The upper and lower surfaces of the seat bearing 240 are respectively in contact with the lower surface of the bearing cap 260 and the first step surface 236 of the fourth rod portion 234. It is convenient to install and disassemble the seat bearing 240.

[0038] A cylindrical groove 2351 is provided at the end of the fifth rod portion 235, a second through hole 2352 is provided transversely through the fifth rod portion 235 and the cylindrical groove 2351, an accommodating groove 2353 is extended inwardly from the end of the fifth rod portion 235 and transversely through the fifth rod portion 235 and the cylindrical groove 2351, and a first annular groove 2354 is provided on the outer surface of the end of the fifth rod portion 235.

[0039] like Figure 4 As shown, the locking ring 220 has a third through hole 221 extending from top to bottom, a second annular groove 222 is provided in the middle of the third through hole 221 of the locking ring 220, and a third annular groove 223 is provided at the lower end of the third through hole 221 of the locking ring 220, which is recessed into the side wall of the third through hole 221.

[0040] like Figure 5 As shown, the screwdriver bit 200 is generally a rod-shaped cylinder, the size of which matches the cylindrical groove 2351, and its fixed end is provided with a first annular accommodating portion 270 recessed inwardly, a second annular accommodating portion 272 and two clamping portions 280 protruding outwardly from top to bottom.

[0041] like Figure 2-Figure 5 As shown, the connection method of the connecting rod 230 and the bit 200 is as follows:

[0042] The first elastic member 250 is sleeved on the outer surface of the fifth rod portion 235 of the connecting rod 230, the fixed end of the screwdriver bit 200 extends into the cylindrical groove 2351 of the fifth rod portion 235, the two clamping parts 280 of the screwdriver bit 200 are clamped in the receiving groove 2353 of the fifth rod portion 235, and two steel balls 271 are arranged in the second through hole 2352 of the fifth rod portion 235. The locking ring 220 is sleeved on the outer surface of the end of the fifth rod portion 235, and the locking ring 220 is fixed to the end of the fifth rod portion 235 by a clamping spring 290. After the locking ring 220 is fixed, the clamping spring 290 is clamped between the first annular groove 2354 of the fifth rod 235 and the third annular groove 223 of the locking ring 220, and the two steel balls 271 are accommodated between the first annular accommodation portion 270 / the second annular accommodation portion 272 of the screwdriver bit 200 and the inner wall of the third through hole 221 of the locking ring 220. One end of the first elastic member 250 abuts against the second step surface 237 of the fifth rod 235, and the other end abuts against the upper surface of the locking ring 220. The clamping portion 280 is clamped in the accommodation groove 2353 of the fifth rod 235, so that the screwdriver bit 200 can be fixed to the connecting rod 230. The two clamping portions 280 are clamped in the accommodation groove 2353 of the fifth rod 235, so that the screwdriver bit 200 can rotate with the rotation of the connecting rod 230.

[0043] The circlip 290 is elastic. When the locking ring 220 is installed, the first elastic member 250 and the locking ring 220 are first sleeved on the connecting rod 230, the first elastic member 250 is compressed, and then the circlip 290 is wrapped around the first annular groove 2354 of the fifth rod portion 235. The circlip pliers are used to press the circlip 290 on the first annular groove 2354, and the locking ring 220 is released. The first elastic member 250 is reset, and the circlip pliers release the circlip 290. The circlip 290 is reset under the elastic action and is clamped in the third annular groove 223 of the locking ring 220. The setting of the circlip 290 can fix the locking ring 220 on the connecting rod 230, and then fix the bit 200 on the connecting rod 230.

[0044] When the screwdriver bit 200 is removed from the connecting rod 230, it is only necessary to push the locking ring 220 upwards, compress the first elastic member 250, align the second annular groove 222 of the locking ring 220 with the second through hole 2352 of the fifth rod portion 235, pull out the screwdriver bit 200, and the two steel balls 271 are pushed out between the second annular groove 222 and the second through hole 2352, disengaging from the first annular accommodating portion 270 / second annular accommodating portion 272 of the screwdriver bit 200, thereby facilitating the removal of the screwdriver bit 200.

[0045] In this embodiment, the locking ring 220 is fixed to the end of the fifth rod portion 235 by a retaining spring 290. In other embodiments, the locking ring 220 may also be threadedly connected to the fifth rod portion 235. In order to prevent the locking ring 220 from falling off when the fifth rod portion 235 rotates, the rotation direction of the fifth rod portion 235 is opposite to the threaded connection direction of the locking ring 220.

[0046] like Figure 6 , Figure 7 As shown, the fixed end of the nail suction tube 300 is mounted on a first locking member 330 through a sliding bearing 320, and a second locking member 340 is provided on the first mounting seat 310. The first locking member 330 is provided with a fourth through hole 331 and a fifth through hole 332 that pass through from top to bottom, the diameter of the fourth through hole 331 is larger than the diameter of the fifth through hole 332, and the two through holes form a third step surface 333; the first locking member 330 is provided with a connecting portion 334 at one end facing the second locking member 340, and the outer surface of the connecting portion 334 is provided with an external thread.

[0047] like Figure 8 As shown, a first groove 341 is provided at one end of the second locking member 340 facing the first locking member 330 , an inner wall of the first groove 341 is provided with an internal thread, and the connecting portion 334 of the first locking member 330 is threadedly connected to the first groove 341 of the second locking member 340 .

[0048] A second groove 342 is disposed at one end of the second locking member 340 away from the first locking member 330 . A first through hole 343 connecting the first groove 341 and the second groove 342 is disposed on the bottom surface of the second groove 342 . The bit 200 extends into the first groove 341 through the first through hole 343 .

[0049] A third groove 344 having a diameter slightly larger than that of the first through hole 343 is disposed on the bottom surface of the second groove 342; a fourth groove 345 having a diameter slightly larger than that of the first groove 341 is disposed on one end of the second locking member 340 facing the first locking member 330; and a sealing ring 346 is disposed in each of the third groove 344 and the fourth groove 345.

[0050] like Fig. 9 As shown, the nail suction tube 300 is generally tubular, with a suction hole 355 arranged inside, and its fixed end is divided into a first tube body 350, a second tube body 351 and a third tube body 352 from top to bottom. The diameter of the second tube body 351 is larger than that of the first tube body 350 and the third tube body 352, forming a fourth step surface 353 and a fifth step surface 354.

[0051] Reference again Figure 6 The nail-absorbing tube 300 is inserted into and extends out of the first locking member 330 from the fourth through hole 331 of the first locking member 330. The third tube body 352 of the nail-absorbing tube 300 is connected to the first locking member 330 through a sliding bearing 320. The sliding bearing 320 is preferably an oil-free bushing. The friction and noise can be reduced during the movement of the nail-absorbing tube 300 in the axial direction. The fifth step surface 354 of the nail-absorbing tube 300 is stuck on the third step surface 333 of the first locking member 330.

[0052] The first locking member 330 and the second locking member 340 are connected to form a vacuum chamber in the first groove 341. The second locking member 340 has an air extraction hole 347. The screwdriver bit 200 passes through the vacuum chamber and extends into the adsorption hole 355 of the nail suction tube 300. The air extraction hole 347 is externally connected to a negative pressure device, and negative pressure is formed in the vacuum chamber, which is convenient for the nail suction tube 300 to adsorb screws. A second elastic member 360 is also provided in the vacuum chamber, one end of the second elastic member 360 abuts against the inner wall of the first groove 341, and the other end abuts against the fourth step surface 353 of the nail suction tube 300. The provision of the second elastic member 360 can play a buffering role when the nail suction tube 300 contacts the screw or when the screwdriver bit is locking the screw.

[0053] A sealing ring 346 is disposed in each of the third groove 344 and the fourth groove 345 . The sealing ring 346 can ensure the sealing performance of the vacuum chamber.

[0054] Two mounting holes 348 are also provided on the bottom surface of the second groove 342 , and a gasket 349 is installed on the bottom surface of the second groove 342 through screws 3491 and the mounting holes 348 to prevent the sealing ring 346 from falling off.

[0055] Reference again Figure 1 The fastening mechanism further includes two groups of rotary drive members 600, which are preferably servo motors, mounted on the front surface 130 of the first mounting plate 100. Each group of rotary drive members 600 is respectively connected to the screwdriver bit 200 to drive the screwdriver bit 200 to rotate and lock the screw. The driving end of the rotary drive member 600 is connected to the first universal joint 620 through a coupling 610. The first universal joint 620 is connected to a sleeve 630. A slide bar 640 is sleeved inside the sleeve 630. The slide bar 640 is connected to the connecting rod 230 through a second universal joint 650. The slide bar 640 can move axially in the sleeve 630 and can rotate with the rotation of the sleeve 630.

[0056] In this embodiment, the sleeve 630 is a hexagonal sleeve, and the slide bar 640 is a hexagonal slide bar. The sleeve 630 and the slide bar 640 can also be set to a four-sided, five-sided structure. In other embodiments, the sleeve 630 and the slide bar 640 can also be set to a key connection.

[0057] like Figure 2 , Figure 3 As shown, the first rod portion 231 of the connecting rod 230 is connected to the second universal joint 650 , and the first rod portion 231 is provided with a sixth through hole 2311 , and the sixth through hole 2311 is connected to the second universal joint 650 via a pin.

[0058] like Fig.10As shown, the first mounting plate 100 is slidably mounted on a second mounting plate 700 through a second slide rail 120, and the second mounting plate 700 is provided with a third driving member 800, and the driving end of the third driving member 800 is connected to the first mounting plate 100, and the third driving member 800 drives the first mounting plate 100 to slide along the second slide rail 120, driving the two sets of locking components to move synchronously, adjusting the positions of the nail suction tube 300 and the batch head 200 in a large range, and the two sets of driving components accurately control the movement of each locking component in a small range. The third driving member 800 is preferably a motor and a screw rod combination, and the third driving member 800 is arranged at the rear of the first mounting plate 100, and the second slide rail 120 is installed on the rear surface 140 of the first mounting plate 100. The two sets of locking components and the third driving member 800 are respectively arranged on both sides of the first mounting plate 100 to improve space utilization.

[0059] The above embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A fastening mechanism, characterized in that: include: a first mounting plate; At least two sets of locking components are respectively slidably mounted on the first mounting plate through a first slide rail; each set of the locking components includes a nail suction tube and a screwdriver bit, the nail suction tube is slidably mounted on the first slide rail through a first mounting seat, and the screwdriver bit is slidably mounted on the first slide rail through a second mounting seat; At least two sets of drive components, the drive components are connected to the lock components one by one; the drive components include a first drive member and a second drive member, the first drive member is mounted on the first mounting plate, and its drive end is connected to the first mounting seat, and the second drive member is mounted on the second mounting seat, and its drive end is connected to the first mounting seat; At least two groups of rotating driving members are mounted on the first mounting plate, and the rotating driving members are connected to the screwdriver bits in a one-to-one correspondence to drive the screwdriver bits to rotate.

2. The fastening mechanism according to claim 1, characterized in that: The fixed end of the screwdriver bit is locked to a connecting rod through a locking ring, the outer sleeve of the connecting rod is provided with a seat bearing, the seat bearing is installed on the second mounting seat, the outer sleeve of the connecting rod is provided with a first elastic member, one end of the first elastic member abuts on the locking ring, and the other end abuts on the second step surface of the connecting rod.

3. The fastening mechanism according to claim 2, characterized in that: The driving end of the rotating drive member is connected to the first universal joint through a coupling. The first universal joint is connected to a sleeve. A sliding rod is sleeved inside the sleeve. The sliding rod is connected to the connecting rod through a second universal joint. The sliding rod can move axially in the sleeve and rotate with the rotation of the sleeve.

4. The fastening mechanism according to claim 3, characterized in that: The sleeve is a hexagonal sleeve, and the slide rod is a hexagonal slide rod.

5. The fastening mechanism according to claim 3, characterized in that: The sleeve is connected to the slide rod via a key.

6. The fastening mechanism according to claim 1, characterized in that: The fixed end of the nail suction tube is installed on a first locking piece, a second locking piece is arranged on the first mounting seat, a first groove is arranged on one end of the second locking piece facing the first locking piece, the first locking piece is threadedly connected with the first groove of the second locking piece to form a vacuum chamber, and the second locking piece has an exhaust hole.

7. The fastening mechanism according to claim 6, characterized in that: A first through hole is provided at one end of the second locking member away from the first locking member, and the screwdriver bit extends into the vacuum chamber through the first through hole.

8. The fastening mechanism according to claim 7, characterized in that: A third groove connected to the first through hole is arranged at one end of the second locking member away from the first locking member, and a fourth groove connected to the first groove is arranged at one end of the second locking member facing the first locking member. A sealing ring is arranged in each of the third groove and the fourth groove.

9. The fastening mechanism according to claim 6, characterized in that: A second elastic member is arranged inside the vacuum chamber, one end of the second elastic member abuts against the inner wall of the first groove, and the other end of the second elastic member abuts against the end of the nail suction tube.

10. The fastening mechanism according to claim 1, characterized in that: The first mounting plate is slidably mounted on a second mounting plate via a second slide rail. The second mounting plate is provided with a third driving member. The driving end of the third driving member is connected to the first mounting plate. The third driving member drives the first mounting plate to slide along the second slide rail.

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