Automatic tightening machine for screws and nuts and using method of automatic tightening machine

Abstract

The invention relates to the technical field of screw assembly and discloses an automatic tightening machine for screws and nuts and a using method thereof.The automatic tightening machine comprises a main body, a limiting ring is fixedly connected to the top of the main body, a feeding disc is rotatably connected to the bottom of the limiting ring, and a motor is fixedly connected to the inner wall of the bottom of the main body; the output end of the motor penetrates through the inner wall of the bottom of the limiting ring and is fixedly connected with the feeding disc, and the side, close to the feeding disc, of the body is fixedly connected with a feeding bin. According to the nut, the upward supporting force is added, the gravity of the nut can be effectively counteracted, even if the second hollow cylinder is vibrated to a certain degree, the nut can be stably kept in the second hollow cylinder due to surrounding and supporting of the elastic framework and is not prone to falling off, and therefore the situation that the nut deflects or falls off before being tightened can be relieved; therefore, the efficiency of the whole tightening operation is improved, the downtime is shortened, and the frequency of manual intervention is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of screw assembly, in particular to an automatic tightening machine for screws and nuts and a use method thereof. Background Art

[0002] Screws and nuts are common fasteners that need to be used together when fixing parts and equipment. After the screws and nuts are processed, an automatic assembly device will be used to screw the nuts onto the screws for subsequent packaging and transportation.

[0003] When tightening the nut and the screw, the nut needs to be clamped by a clamping device and moved to the top of the screw, and then the nut clamp and the screw are tightened by rotating. Generally, when the nut is sucked by magnetic force, in order to better release the nut, the magnetic force used is relatively weak, and when the nut is sucked by magnetic force, it is easy to cause the sucked nut to be deflected and misplaced in the clamp during suction, making it difficult for the nut to maintain a horizontal state. At the same time, the nut may fall off due to vibration during movement, requiring shutdown repair and manual intervention, which takes a lot of time and affects the tightening efficiency. Summary of the invention

[0004] The object of the present invention is to provide an automatic tightening machine for screws and nuts and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an automatic tightening machine for screws and nuts, comprising a main body, a limiting ring fixedly connected to the top of the main body, a feed tray rotatably connected to the bottom of the limiting ring, a motor fixedly connected to the bottom inner wall of the main body, an output end of the motor penetrates the bottom inner wall of the limiting ring and is fixedly connected to the feed tray, a feed cabin is fixedly connected to one side of the main body close to the feed tray, an electric push rod is fixedly connected to the bottom inner wall of the feed cabin, and an electric frame is fixedly connected to one side of the main body close to the feed tray, and further comprising;

[0007] The transmission mechanism includes a transmission chain rotatably connected to the top of the electric frame, one end of the transmission chain away from the electric frame is fixedly connected to a moving plate, the moving plate is slidably connected to the side wall of the electric frame, the top inner wall of the moving plate is fixedly connected to an electric push rod 2, the output end of the electric push rod 2 is fixedly connected to a motor 2, and the motor 2 is slidably connected to the side wall of the moving plate;

[0008] The auxiliary mechanism includes a hollow cylinder fixedly connected to the output end of motor 2, the inner wall of the hollow cylinder is provided with a special-shaped groove, the special-shaped groove is in the shape of a heart, the bottom of the hollow cylinder is fixedly connected to hollow cylinder 2, the interior of hollow cylinder 2 is fixedly connected to a fixed disk, the side wall of the fixed disk is provided with a plurality of straight grooves, the middle part of the fixed disk is open, the bottom inner wall of the fixed disk is fixedly connected to a bottom ring, the inner wall of hollow cylinder 2 is provided with a plurality of sliding grooves, and the interior of hollow cylinder 2 is fixedly connected to a fixed ring.

[0009] Furthermore, a sliding mechanism is provided inside the second hollow cylinder, and the sliding mechanism includes a T-shaped rod slidably connected to the opening of the fixed disk, a plurality of plug rods are fixedly connected to the outer surface of the T-shaped rod, the outer surface of the T-shaped rod located at the top of the fixed disk is rotatably connected to a rotating disk, a threaded groove is provided on the inner wall of the rotating disk, the plug rod is slidably connected to the inside of the threaded groove, the top of the T-shaped rod is rotatably connected to a rotating block, the outer surface of the rotating block is fixedly connected to a short rod, and the end of the short rod away from the rotating block is slidably connected to the inside of the special-shaped groove.

[0010] Furthermore, a plurality of arc-shaped grooves are provided on the side wall of the rotating disk, and a sliding shaft is slidably connected inside the arc-shaped groove, and the bottom of the sliding shaft passes through the straight groove on the fixed disk and extends to the outside, and the extended end of the sliding shaft is fixedly connected to the movable plate 2, and the end of the movable plate 2 away from the T-shaped rod is fixedly connected to the reset rod, and the end of the reset rod away from the movable plate 2 is fixedly connected to the inner wall of the hollow cylinder 2, and the bottom inner wall of the T-shaped rod is fixedly connected to a reset spring, and the top of the reset spring is fixedly connected to the bottom outer wall of the fixed disk, and the side of the movable plate 2 away from the rotating disk is rotatably connected to the middle plate.

[0011] Furthermore, a stabilizing mechanism is provided at the bottom of the middle plate, which includes a fixed ring 2 rotatably connected to one end of several middle plates away from the movable plate 2, a side of the fixed ring 2 away from the middle plate is fixedly connected to an elastic frame, and an end of the elastic frame away from the fixed ring 2 is fixedly connected to a telescopic ring.

[0012] Furthermore, a lifting mechanism is provided inside the second hollow cylinder, and the lifting mechanism includes a sliding rod slidably connected inside the slide groove, a side of the sliding rod close to the T-shaped rod is rotatably connected to an elastic plate, the bottom of the elastic plate is rotatably connected to the side wall of the fixed ring, a side of the sliding rod close to the elastic plate is rotatably connected to a connecting strip, two rotating plates are provided on the side of the connecting strip away from the sliding rod, the two rotating plates are rotatably connected to the outer surface of the elastic skeleton on the side close to the elastic plate, an auxiliary rod is rotatably connected between the two rotating plates, and the top rotating plate is rotatably connected to the connecting strip on the side close to the second fixed ring.

[0013] Furthermore, a moving mechanism is provided inside the second hollow cylinder, and the moving mechanism includes an L-ring rotatably connected to a side of the bottom ring close to the hollow cylinder, a side of the L-ring far from the bottom ring is rotatably connected to a moving ring, a side of the moving ring close to the L-ring is open, a tension spring is fixedly connected to the opening of the moving ring, an end of the tension spring close to the L-ring is fixedly connected to the L-ring, a plurality of elastic plates II are fixedly connected to the inner wall of the moving ring, a plurality of conical holes are provided on the inner wall of the moving ring, an end of the plurality of conical holes far from the elastic plate II penetrates to the outer wall of the moving ring, a spring rod is slidably connected to the inside of the conical hole, a ball is slidably connected to the inside of the conical hole, a right-angle ring is rotatably connected to the top of the L-ring, an annular wave groove is provided on the inner wall of the right-angle ring, a gear ring is fixedly connected to the outer surface of the right-angle ring, a plurality of rectangular grooves are provided on the outer surface of the moving ring, a short shaft is slidably connected to the inside of the rectangular groove, and an end of the short shaft far from the moving ring is slidably connected to the inside of the annular wave groove.

[0014] Furthermore, a rotating mechanism is provided on the outer surface of the L ring, and the rotating mechanism includes several gear shafts meshingly connected to the side wall of the gear ring, the outer surface of the gear shaft is rotatably connected to a right-angle plate, one end of the right-angle plate close to the L ring is fixedly connected to the outer surface of the L ring, one end of the gear shaft away from the right-angle ring is fixedly connected to an obtuse-angle plate, the side of the obtuse-angle plate away from the gear shaft is rotatably connected to a connecting rod, one end of the several connecting rods away from the obtuse-angle plate is rotatably connected to an obtuse-angle tube, and the obtuse-angle tube is slidably connected to the outer surface of the movable ring.

[0015] Furthermore, a method for using an automatic tightening machine for screws and nuts, the automatic tightening machine for screws and nuts, the method comprising the following steps:

[0016] S1: connection and transportation;

[0017] S2: mobile gripping;

[0018] S3: Turn and tighten.

[0019] The present invention has the following beneficial effects:

[0020] When the second hollow cylinder moves downward, the second hollow cylinder can push the nut on the electric push rod to squeeze the T-shaped rod. After the T-shaped rod is squeezed, it will move upward in the middle of the fixed disk. When the T-shaped rod moves upward, the upward movement of the T-shaped rod will drive a plurality of plug rods to move upward in the threaded groove on the inner wall of the rotating disk. When the plug rod moves upward, the movement of the plug rod in the threaded groove will drive the rotating disk to rotate. When the rotating disk rotates, it will drive the sliding shaft to move through the arc groove. When the sliding shaft moves, it will drive the moving plate 2 to move in the straight groove. When the moving plate 2 moves, it will squeeze the fixed ring 2 through the middle plate so that the fixed ring 2 moves downward inside the hollow cylinder 2. When the fixed ring 2 moves downward, the movement of the fixed ring 2 will squeeze the top of the elastic frame. After the elastic frame is squeezed, the bottom of the elastic frame will drive the telescopic ring to shrink relatively. Then, when the fixed ring 2 continues to move downward, the downward movement of the fixed ring 2 will squeeze the sliding rod. After being extruded, it will move downward and squeeze the elastic plate to cause it to bulge outward. When the elastic plate is deformed, the deformation of the elastic plate will push the middle part of the elastic skeleton. After being squeezed, the middle part of the elastic skeleton will also produce a relative bulge. At this time, the raised elastic skeleton will evenly resist the bottom surface of the nut and evenly contact the bottom of the nut from multiple points, and provide an upward supporting force to the nut, thereby limiting the horizontal freedom of the nut and preventing the nut from deflecting. At the same time, when the elastic skeleton is relatively raised, a structure similar to an enclosure can be formed around the bottom of the nut. Coupled with the upward supporting force, the nut's own gravity can be effectively offset. Even if the hollow cylinder is subjected to a certain degree of vibration, the nut will be stably maintained inside the hollow cylinder due to the enclosure and support of the elastic skeleton, and will not fall off easily. This can reduce the deflection or falling of the nut before tightening, thereby improving the efficiency of the entire tightening operation and reducing downtime and the frequency of manual intervention.

[0021] 2. In the present invention, when the second fixing ring moves downward and squeezes the sliding rod, the sliding rod will move downward after being squeezed, and the sliding rod will squeeze the elastic plate after moving downward. The elastic plate will push the elastic frame to deform after being squeezed, and the elastic frame will drive the multiple rotating plates to move synchronously relative to each other when deforming. Afterwards, when the second hollow cylinder covers the screw, the top of the screw will enter the second hollow cylinder and be at the bottom of the nut in the second hollow cylinder. Then, when the nut starts to tighten the screw, the second hollow cylinder is pushed downward by controlling the second electric push rod. When the second hollow cylinder moves downward, the screw will push the T-shaped rod upward through the nut. When the T-shaped rod moves upward, it will drive the rotating disk to rotate. When the rotating disk rotates, it will push the second fixing ring downward through the middle plate. When the fixing ring 2 moves downward, it will squeeze the sliding rod. When the sliding rod moves downward, it will push the top rotating plate to rotate on the surface of the elastic skeleton through the connecting strip. When the top rotating plate rotates, it will drive the bottom rotating plate to rotate synchronously through the auxiliary rod and cover the surface of the screw and provide a relative and downward force. When the rotating plate covers the surface of the screw, it will squeeze the thread on the surface of the screw. When multiple rotating plates are included on the surface of the screw and provide a downward force, it helps to correct the inclination of the screw and keep it in a direction perpendicular to the plane of the nut. It can effectively reduce the inclination or instability of the screw, help maintain the stability of the screw during the tightening process, prevent it from tilting or shaking due to uneven force, and improve the efficiency and accuracy of tightening.

[0022] 3. In the present invention, when the hollow cylinder II covers the surface of the screw, the screw will be between the multiple elastic plates II. At this time, the multiple elastic plates II will squeeze the screw, and then in the process of the hollow cylinder II moving downward, the screw will drive the movable ring to move upward through the elastic plate II, and then when the rotation of the hollow cylinder II drives the multiple rotating plates to rotate, the rotation of the rotating plate will drive the screw to move upward along the threaded groove on the surface of the screw, and when the screw starts to move upward, the upward movement of the screw will drive the movable ring to move upward synchronously through the elastic plate II, and when the movable ring moves upward, it will drive the short shaft to move upward synchronously, and when the short shaft moves upward, it will slide in the annular wave groove of the side wall of the right-angle ring, and when the short shaft slides inside the annular wave groove, the sliding of the short shaft will drive the right-angle ring to rotate, and when the right-angle ring rotates When the gear ring moves, it will drive the gear ring on the outer surface to rotate synchronously, and when the gear ring rotates, it will drive the gear shaft to rotate, and when the gear shaft rotates, it will drive the obtuse plate to rotate, and when the obtuse plate rotates, it will drive the connecting rod to move downward, and when the connecting rod moves downward, the downward movement of the connecting rod will drive the obtuse tube to move synchronously, and when the obtuse tube moves downward, the downward movement of the obtuse tube will squeeze the ball, and the ball will slide in the tapered hole after being squeezed, and when the ball slides, the sliding of the ball will push the spring rod to squeeze on the surface of the screw and increase the friction between the screw and the screw, which is more effective. The thread groove on the screw thereby inhibits the upward movement of the screw during the rotation of the rotating plate driven by the hollow tube, reduces the slippage caused by the movement of the screw during tightening, and further improves the tightening efficiency.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the present invention;

[0027] Figure 3 It is a partial cross-sectional schematic diagram of the auxiliary mechanism of the present invention;

[0028] Figure 4 It is a schematic diagram of the internal parts of the auxiliary mechanism of the present invention;

[0029] Figure 5 It is a schematic diagram of the sliding mechanism of the present invention;

[0030] Figure 6 It is a schematic diagram of the lifting mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the mobile mechanism of the present invention;

[0032] Figure 8 It is an exploded diagram of the mobile mechanism of the present invention;

[0033] Fig. 9 The figure is a flow chart of the method for using the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] In the figure: 1. Main body; 101. Motor; 102. Feeding plate; 103. Feeding cabin; 104. Electric push rod; 105. Electric frame; 2. Transmission mechanism; 201. Transmission chain; 202. Moving plate; 203. Electric push rod 2; 204. Motor 2; 3. Auxiliary mechanism; 301. Hollow cylinder; 302. Hollow cylinder 2; 303. Fixed plate; 304. Bottom ring; 305. Fixed ring; 4. Sliding mechanism; 401. T-bar; 402. Rotating block; 403. Rotating plate; 404. Moving plate 2 ; 405, middle plate; 5, stabilizing mechanism; 501, fixing ring 2; 502, elastic skeleton; 503, telescopic ring; 6, lifting mechanism; 601, sliding rod; 602, elastic plate; 603, connecting strip; 604, rotating plate; 7, moving mechanism; 701, L ring; 702, moving ring; 703, elastic plate 2; 704, spring rod; 705, right-angle ring; 706, short shaft; 8, rotating mechanism; 801, gear shaft; 802, obtuse plate; 803, connecting rod; 804, obtuse tube. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 8As shown, the present invention is an automatic tightening machine for screws and nuts, comprising a main body 1, a limiting ring is fixedly connected to the top of the main body 1, a feed tray 102 is rotatably connected to the bottom of the limiting ring, a motor 101 is fixedly connected to the bottom inner wall of the main body 1, an output end of the motor 101 penetrates the bottom inner wall of the limiting ring and is fixedly connected to the feed tray 102, a feed cabin 103 is fixedly connected to the side of the main body 1 close to the feed tray 102, an electric push rod 104 is fixedly connected to the bottom inner wall of the feed cabin 103, and an electric frame 105 is fixedly connected to the side of the main body 1 close to the feed tray 102, and further comprising;

[0038] Transmission mechanism 2, the transmission mechanism 2 includes a transmission chain 201 rotatably connected to the top of the electric frame 105, one end of the transmission chain 201 away from the electric frame 105 is fixedly connected to a moving plate 202, the moving plate 202 is slidably connected to the side wall of the electric frame 105, the top inner wall of the moving plate 202 is fixedly connected to an electric push rod 203, the output end of the electric push rod 203 is fixedly connected to a motor 204, and the motor 204 is slidably connected to the side wall of the moving plate 202;

[0039] Auxiliary mechanism 3, auxiliary mechanism 3 includes a hollow cylinder 301 fixedly connected to the output end of the motor 204, the inner wall of the hollow cylinder 301 is provided with a special-shaped groove, the special-shaped groove is in the shape of a heart, the bottom of the hollow cylinder 301 is fixedly connected with the hollow cylinder 2 302, the interior of the hollow cylinder 2 302 is fixedly connected with a fixed disk 303, the side wall of the fixed disk 303 is provided with a plurality of straight grooves, the middle part of the fixed disk 303 is open, the bottom inner wall of the fixed disk 303 is fixedly connected with a bottom ring 304, the inner wall of the hollow cylinder 2 302 is provided with a plurality of sliding grooves, and the interior of the hollow cylinder 2 302 is fixedly connected with a fixed ring 305 First, connect the feed bin 103 with the external material conveying device, then connect the hollow cylinder 301 with the output end of the motor 204, and then convey the screw to the inside of the feed tray 102, and then start the external material conveying device and the motor 101. When the external material conveying device is started, the nut will be conveyed to the inside of the feed bin 103. When the nut is conveyed to the inside of the feed bin 103, start the electric push rod 104. The start of the electric push rod 104 will lift the nut, and then start the electric frame 105 to drive the moving plate 202 to slide back and forth through the transmission chain 201.

[0040] A sliding mechanism 4 is provided inside the hollow cylinder 302, and the sliding mechanism 4 includes a T-shaped rod 401 slidably connected to the opening of the fixed disk 303, and a plurality of plug rods are fixedly connected to the outer surface of the T-shaped rod 401, and the outer surface of the T-shaped rod 401 located at the top of the fixed disk 303 is rotatably connected to the rotating disk 403, and the inner wall of the rotating disk 403 is provided with a threaded groove, and the plug rod is slidably connected to the inside of the threaded groove, and the top of the T-shaped rod 401 is rotatably connected to a rotating block 402, and a short rod is fixedly connected to the outer surface of the rotating block 402, and the end of the short rod away from the rotating block 402 is slidably connected to the inside of the special-shaped groove. When the T-shaped rod 401 moves upward, the upward movement of the T-shaped rod 401 will drive a plurality of plug rods to move upward in the threaded groove on the inner wall of the rotating disk 403, and when the plug rod moves upward, the movement of the plug rod in the threaded groove will drive the rotating disk 403 to rotate, and when the rotating disk 403 rotates, it will drive the sliding shaft to move through the arc groove.

[0041] A plurality of arc grooves are provided on the side wall of the rotating disk 403, and a sliding shaft is slidably connected inside the arc groove, and the bottom of the sliding shaft passes through the straight groove on the fixed disk 303 and extends to the outside, and the extended end of the sliding shaft is fixedly connected to a movable plate 2 404, and the end of the movable plate 2 404 away from the T-bar 401 is fixedly connected to a reset rod, and the end of the reset rod away from the movable plate 2 404 is fixedly connected to the inner wall of the hollow cylinder 2 302, and a reset spring is fixedly connected to the bottom inner wall of the T-bar 401, and the top of the reset spring is fixedly connected to the bottom outer wall of the fixed disk 303, and the side of the movable plate 2 404 away from the rotating disk 403 is rotatably connected to the middle plate 405, and the sliding shaft will drive the movable plate 2 404 to move in the straight groove when moving, and when the movable plate 2 404 moves, it will squeeze the fixed ring 2 501 through the middle plate 405 so that the fixed ring 2 501 moves downward inside the hollow cylinder 2 302.

[0042] A stabilizing mechanism 5 is provided at the bottom of the middle plate 405, and the stabilizing mechanism 5 includes a fixing ring 2 501 rotatably connected to one end of the middle plates 405 away from the moving plate 2 404, an elastic skeleton 502 is fixedly connected to the side of the fixing ring 2 501 away from the middle plate 405, and a telescopic ring 503 is fixedly connected to the end of the elastic skeleton 502 away from the fixing ring 2 501. When the fixing ring 2 501 moves downward, the movement of the fixing ring 2 501 will squeeze the top of the elastic skeleton 502. After the elastic skeleton 502 is squeezed, the bottom of the elastic skeleton 502 will drive the telescopic ring 503 to shrink relatively, and then when the fixing ring 2 501 continues to move downward, the downward movement of the fixing ring 2 501 will squeeze the sliding rod 601.

[0043] The hollow cylinder 302 is provided with a lifting mechanism 6 inside. The lifting mechanism 6 includes a sliding rod 601 slidably connected inside the slide groove. The side of the sliding rod 601 close to the T-shaped rod 401 is rotatably connected to an elastic plate 602. The bottom of the elastic plate 602 is rotatably connected to the side wall of the fixing ring 305. The side of the sliding rod 601 close to the elastic plate 602 is rotatably connected to a connecting strip 603. The side of the connecting strip 603 away from the sliding rod 601 is provided with two rotating plates 604. The two rotating plates 604 are close to the elastic plate 602. One side is rotatably connected to the outer surface of the elastic skeleton 502, an auxiliary rod is rotatably connected between the two rotating plates 604, and the top rotating plate 604 is rotatably connected to the connecting strip 603 on one side close to the fixing ring 2 501. When the sliding rod 601 is squeezed, it will move downward and squeeze the elastic plate 602 to cause it to bulge outward. When the elastic plate 602 is deformed, the deformation of the elastic plate 602 will push the middle part of the elastic skeleton 502, and the middle part of the elastic skeleton 502 will also produce a relative bulge after being squeezed.

[0044] The interior of the hollow cylinder 302 is provided with a moving mechanism 7, which includes an L ring 701 rotatably connected to the side of the bottom ring 304 close to the hollow cylinder 301, and the side of the L ring 701 away from the bottom ring 304 is rotatably connected to the moving ring 702, and the side of the moving ring 702 close to the L ring 701 is open, and a tension spring is fixedly connected to the opening of the moving ring 702, and one end of the tension spring close to the L ring 701 is fixedly connected to the L ring 701, and a plurality of elastic plates 703 are fixedly connected to the inner wall of the moving ring 702, and a plurality of conical holes are opened on the inner wall of the moving ring 702, and one end of the plurality of conical holes away from the elastic plate 703 penetrates to the outer wall of the moving ring 702, and a spring is slidably connected to the inside of the conical hole Rod 704, the inner part of the tapered hole is slidably connected with a ball bearing, the top of the L ring 701 is rotatably connected with a right-angle ring 705, the inner wall of the right-angle ring 705 is provided with an annular wave groove, the outer surface of the right-angle ring 705 is fixedly connected with a gear ring, the outer surface of the movable ring 702 is provided with a plurality of rectangular grooves, the inner part of the rectangular groove is slidably connected with a short shaft 706, and the end of the short shaft 706 away from the movable ring 702 is slidably connected to the inner part of the annular wave groove, when the hollow cylinder 2 302 covers the surface of the screw, the screw will be between multiple elastic plates 2 703, at this time, the multiple elastic plates 2 703 will squeeze the screw, and then in the process of the hollow cylinder 2 302 moving downward, the screw will drive the movable ring 702 to move upward through the elastic plate 2 703.

[0045] The outer surface of the L ring 701 is provided with a rotating mechanism 8, which includes a plurality of gear shafts 801 meshingly connected to the side wall of the gear ring, the outer surface of the gear shaft 801 is rotatably connected to a right-angle plate, one end of the right-angle plate close to the L ring 701 is fixedly connected to the outer surface of the L ring 701, one end of the gear shaft 801 away from the right-angle ring 705 is fixedly connected to an obtuse-angle plate 802, the side of the obtuse-angle plate 802 away from the gear shaft 801 is rotatably connected to a connecting rod 803, and one end of the plurality of connecting rods 803 away from the obtuse-angle plate 802 is rotatably connected to an obtuse-angle tube 808. 04, the obtuse-angle tube 804 is slidably connected to the outer surface of the movable ring 702. When the gear ring rotates, it drives the gear shaft 801 to rotate. When the gear shaft 801 rotates, it drives the obtuse-angle plate 802 to rotate. When the obtuse-angle plate 802 rotates, it drives the connecting rod 803 to move downward. When the connecting rod 803 moves downward, the downward movement of the connecting rod 803 drives the obtuse-angle tube 804 to move synchronously. When the obtuse-angle tube 804 moves downward, the downward movement of the obtuse-angle tube 804 squeezes the ball, and the ball slides in the tapered hole after being squeezed.

[0046] A method for using an automatic tightening machine for screws and nuts, the automatic tightening machine for screws and nuts comprising the following steps:

[0047] S1: connection and transportation;

[0048] S2: mobile gripping;

[0049] S3: Turn and tighten.

[0050] When in use, first connect the feed chamber 103 with the external material conveying device, then connect the hollow cylinder 301 with the output end of the motor 204, and then convey the screw to the inside of the feed tray 102, and then start the external material conveying device and the motor 101. When the external material conveying device is started, the nut will be conveyed to the inside of the feed chamber 103. When the nut is conveyed to the inside of the feed chamber 103, start the electric push rod 104. The start of the electric push rod 104 will lift the nut, and then start the electric frame 105 to drive the moving plate 202 to slide back and forth through the transmission chain 201. When the moving plate 202 slides to When the nut is above the electric push rod 104, the electric push rod 203 is started. When the electric push rod 203 works again, it will push the motor 204 to move downward. When the motor 204 moves downward again, it will drive the hollow cylinder 302 to clamp the nut on the electric push rod 104, and then the moving plate 202 is controlled to reset and move to above the screw on the feeding tray 102. Thereafter, the electric push rod 203 is started again to make the hollow cylinder 302 cover the top of the screw, and then the motor 204 is started. When the motor 204 works, it will drive the hollow cylinder 302 to rotate, and the hollow cylinder 302 will drive the nut to rotate when it rotates, and the nut will be tightened with the screw when it rotates.

[0051] When the hollow cylinder 302 moves downward to clamp the nut on the electric push rod 104, the downward movement of the hollow cylinder 302 can make the electric push rod 104 push the nut to squeeze the T-shaped rod 401. After being squeezed, the T-shaped rod 401 will move upward in the middle of the fixed disk 303. When the T-shaped rod 401 moves upward, the upward movement of the T-shaped rod 401 will drive several plug rods to move upward in the thread groove on the inner wall of the rotating disk 403. When the plug rod moves upward, the movement of the plug rod in the thread groove will drive the rotating disk 403 to rotate. The sliding shaft is driven to move through the arc groove, and the sliding shaft drives the moving plate 2 404 to move in the straight groove when moving. When the moving plate 2 404 moves, it squeezes the fixed ring 2 501 through the middle plate 405 so that the fixed ring 2 501 moves downward inside the hollow cylinder 2 302. When the fixed ring 2 501 moves downward, the movement of the fixed ring 2 501 squeezes the top of the elastic skeleton 502. After the elastic skeleton 502 is squeezed, the bottom of the elastic skeleton 502 drives the telescopic ring 503 to shrink relatively. Then, when the fixed ring 2 501 continues to move downward, the fixed ring The downward movement of the second 501 will squeeze the sliding rod 601. After being squeezed, the sliding rod 601 will move downward and squeeze the elastic plate 602 to make it bulge outward. When the elastic plate 602 is deformed, the deformation of the elastic plate 602 will push the middle part of the elastic skeleton 502. After the middle part of the elastic skeleton 502 is squeezed, it will also produce a relative bulge. At this time, the bulging elastic skeleton 502 will evenly contact the bottom surface of the nut and evenly contact the bottom of the nut from multiple points, and provide an upward supporting force to the nut, thereby limiting the freedom of the nut in the horizontal direction. In order to prevent the nut from deflecting, when the elastic skeleton 502 is relatively raised, a structure similar to an enclosure can be formed around the bottom of the nut. Coupled with the upward supporting force, the gravity of the nut itself can be effectively offset. Even if the hollow cylinder 302 is subjected to a certain degree of vibration, the nut will be stably maintained inside the hollow cylinder 302 due to the enclosure and support of the elastic skeleton 502 and will not fall off easily. This can reduce the possibility of the nut deflecting or falling off before tightening, thereby improving the efficiency of the entire tightening operation and reducing downtime and the frequency of manual intervention.

[0052] When the T-shaped rod 401 moves upward, it will drive the rotating block 402 to move synchronously in the hollow cylinder 301. When the rotating block 402 moves, it will drive the short rod to slide in the moving groove. When the short rod slides to the depression at the top of the special-shaped groove, it can drive the T-shaped rod 401 to reset downward for a distance and stop moving, so that the fixing ring 2 501 can support and fix the nut.

[0053] When the fixing ring 501 moves downward and squeezes the sliding rod 601, the sliding rod 601 will move downward after being squeezed, and the sliding rod 601 will squeeze the elastic plate 602 after moving downward. The elastic plate 602 will push the elastic frame 502 to deform after being squeezed, and the elastic frame 502 will drive multiple rotating plates 604 to move synchronously relative to each other when deforming. Afterwards, when the hollow cylinder 302 covers the screw, the top of the screw will enter the hollow cylinder 302 and be at the bottom of the nut in the hollow cylinder 302. Then, when the nut starts to tighten the screw, the hollow cylinder 302 is pushed downward by controlling the electric push rod 203. When the hollow cylinder 302 moves downward, the screw will push the T-shaped rod 401 upward through the nut. When the T-shaped rod 401 moves upward, it will drive the rotating disk 403 to rotate, and the rotating disk 403 will pass through the middle plate 405 when rotating. Push the fixing ring 2 501 to move downward, and the fixing ring 2 501 will squeeze the sliding rod 601 when moving downward. When the sliding rod 601 moves downward, it will push the top rotating plate 604 to rotate on the surface of the elastic skeleton 502 through the connecting strip 603. When the top rotating plate 604 rotates, it will drive the bottom rotating plate 604 to rotate synchronously through the auxiliary rod and cover the surface of the screw and provide a relative and downward force. When the rotating plate 604 covers the surface of the screw, it will squeeze the thread on the surface of the screw. When multiple rotating plates 604 are included on the surface of the screw and provide a downward force, it helps to correct the inclination of the screw and keep it in a direction perpendicular to the plane of the nut, which can effectively reduce the inclination or instability of the screw, help maintain the stability of the screw during the tightening process, prevent it from tilting or shaking due to uneven force, and improve the efficiency and accuracy of tightening.

[0054] When the hollow cylinder 302 covers the surface of the screw, the screw will be between the multiple elastic plates 703. At this time, the multiple elastic plates 703 will squeeze the screw, and then in the process of the hollow cylinder 302 moving down, the screw will drive the movable ring 702 to move up through the elastic plate 703. Later, when the rotation of the hollow cylinder 302 drives the multiple rotating plates 604 to rotate, the rotation of the rotating plate 604 will drive the screw to move up along the threaded groove on the surface of the screw. When the screw starts to move up, the upward movement of the screw will drive the movable ring 702 to move up synchronously through the elastic plate 703. When the movable ring 702 moves up, it will drive the short shaft 706 to move up synchronously. When the short shaft 706 moves up, it will slide in the annular wave groove on the side wall of the right-angle ring 705. When the short shaft 706 slides inside the annular wave groove, the sliding of the short shaft 706 will drive the right-angle ring 705 to rotate. When the ring 705 rotates, it will drive the gear ring on the outer surface to rotate synchronously. When the gear ring rotates, it will drive the gear shaft 801 to rotate. When the gear shaft 801 rotates, it will drive the obtuse plate 802 to rotate. When the obtuse plate 802 rotates, it will drive the connecting rod 803 to move downward. When the connecting rod 803 moves downward, the downward movement of the connecting rod 803 will drive the obtuse tube 804 to move synchronously. When the obtuse tube 804 moves downward, the downward movement of the obtuse tube 804 will squeeze the ball. After being squeezed, the ball will slide in the tapered hole. When the ball slides, the sliding of the ball will push the spring rod 704 to squeeze on the surface of the screw and increase the friction between the spring rod 704 and the screw, which is more effective. The thread groove on the screw is inhibited from moving upward during the rotation of the rotating plate 604 driven by the hollow tube 2 302, reducing the slippage caused by the movement of the screw during tightening, thereby further improving the tightening efficiency.

[0055] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic tightening machine for screws and nuts, comprising a main body (1), the top of the main body (1) is fixedly connected to a limit ring, the bottom of the limit ring is rotatably connected to a feed tray (102), the bottom inner wall of the main body (1) is fixedly connected to a motor (101), the output end of the motor (101) penetrates the bottom inner wall of the limit ring and is fixedly connected to the feed tray (102), a side of the main body (1) close to the feed tray (102) is fixedly connected to a feed cabin (103), the bottom inner wall of the feed cabin (103) is fixedly connected to an electric push rod (104), and a side of the main body (1) close to the feed tray (102) is fixedly connected to an electric frame (105), characterized in that: Also includes; A transmission mechanism (2), the transmission mechanism (2) comprising a transmission chain (201) rotatably connected to the top of an electric frame (105), one end of the transmission chain (201) away from the electric frame (105) being fixedly connected to a moving plate (202), the moving plate (202) being slidably connected to a side wall of the electric frame (105), a second electric push rod (203) being fixedly connected to the top inner wall of the moving plate (202), an output end of the second electric push rod (203) being fixedly connected to a second motor (204), the second motor (204) being slidably connected to the side wall of the moving plate (202); The auxiliary mechanism (3) comprises a hollow cylinder (301) fixedly connected to the output end of the second motor (204); the inner wall of the hollow cylinder (301) is provided with a special-shaped groove, the special-shaped groove is in the shape of a heart; the bottom of the hollow cylinder (301) is fixedly connected to the second hollow cylinder (302); the interior of the second hollow cylinder (302) is fixedly connected to a fixed disk (303); the side wall of the fixed disk (303) is provided with a plurality of straight grooves; the middle part of the fixed disk (303) is open; the bottom inner wall of the fixed disk (303) is fixedly connected to a bottom ring (304); the inner wall of the second hollow cylinder (302) is provided with a plurality of sliding grooves; the interior of the second hollow cylinder (302) is fixedly connected to a fixed ring (305).

2. The automatic tightening machine for screws and nuts according to claim 1, characterized in that: A sliding mechanism (4) is arranged inside the second hollow cylinder (302), and the sliding mechanism (4) comprises a T-shaped rod (401) slidably connected to the opening of the fixed disk (303), a plurality of insertion rods are fixedly connected to the outer surface of the T-shaped rod (401), a rotating disk (403) is rotatably connected to the outer surface of the T-shaped rod (401) located at the top of the fixed disk (303), a threaded groove is provided on the inner wall of the rotating disk (403), the insertion rod is slidably connected to the inside of the threaded groove, a rotating block (402) is rotatably connected to the top of the T-shaped rod (401), a short rod is fixedly connected to the outer surface of the rotating block (402), and one end of the short rod away from the rotating block (402) is slidably connected to the inside of the special-shaped groove.

3. The automatic tightening machine for screws and nuts according to claim 2, characterized in that: The side wall of the rotating disk (403) is provided with a plurality of arc-shaped grooves, the interior of the arc-shaped groove is slidably connected with a sliding shaft, the bottom of the sliding shaft penetrates through the straight groove on the fixed disk (303) and extends to the outside, the extended end of the sliding shaft is fixedly connected with a movable plate 2 (404), the end of the movable plate 2 (404) away from the T-shaped rod (401) is fixedly connected with a reset rod, the end of the reset rod away from the movable plate 2 (404) is fixedly connected to the inner wall of the hollow cylinder 2 (302), the bottom inner wall of the T-shaped rod (401) is fixedly connected with a reset spring, the top of the reset spring is fixedly connected to the bottom outer wall of the fixed disk (303), and the side of the movable plate 2 (404) away from the rotating disk (403) is rotatably connected with an intermediate plate (405).

4. The automatic tightening machine for screws and nuts according to claim 3, characterized in that: A stabilizing mechanism (5) is provided at the bottom of the intermediate plate (405), and the stabilizing mechanism (5) comprises a second fixing ring (501) rotatably connected to one end of a plurality of intermediate plates (405) away from the second moving plate (404), a side of the second fixing ring (501) away from the intermediate plate (405) is fixedly connected to an elastic skeleton (502), and an end of the elastic skeleton (502) away from the second fixing ring (501) is fixedly connected to a telescopic ring (503).

5. The automatic tightening machine for screws and nuts according to claim 4, characterized in that: A lifting mechanism (6) is arranged inside the second hollow cylinder (302), and the lifting mechanism (6) comprises a sliding rod (601) slidably connected inside the sliding groove, the sliding rod (601) is rotatably connected to an elastic plate (602) on one side close to the T-shaped rod (401), the bottom of the elastic plate (602) is rotatably connected to the side wall of the fixing ring (305), the sliding rod (601) is rotatably connected to a connecting strip (603) on one side close to the elastic plate (602), and two rotating plates (604) are arranged on one side of the connecting strip (603) away from the sliding rod (601), the two rotating plates (604) are rotatably connected to the outer surface of the elastic skeleton (502) on one side close to the elastic plate (602), an auxiliary rod is rotatably connected between the two rotating plates (604), and the rotating plate (604) at the top is rotatably connected to the connecting strip (603) on one side close to the second fixing ring (501).

6. The automatic tightening machine for screws and nuts according to claim 5, characterized in that: A moving mechanism (7) is arranged inside the second hollow cylinder (302), and the moving mechanism (7) comprises an L ring (701) rotatably connected to a side of the bottom ring (304) close to the hollow cylinder (301), and a moving ring (702) is rotatably connected to a side of the L ring (701) away from the bottom ring (304), and a side of the moving ring (702) close to the L ring (701) is arranged to be open, and a tension spring is fixedly connected to the opening of the moving ring (702), and one end of the tension spring close to the L ring (701) is fixedly connected to the L ring (701), and a plurality of elastic plates (703) are fixedly connected to the inner wall of the moving ring (702), and the inner wall of the moving ring (702) is provided with a plurality of elastic plates (703). There are a plurality of conical holes, and the ends of the plurality of conical holes away from the second elastic plate (703) penetrate to the outer wall of the movable ring (702); a spring rod (704) is slidably connected to the inside of the conical hole; a ball is slidably connected to the inside of the conical hole; the top of the L ring (701) is rotatably connected to a right-angle ring (705); an annular wave groove is provided on the inner wall of the right-angle ring (705); a gear ring is fixedly connected to the outer surface of the right-angle ring (705); a plurality of rectangular grooves are provided on the outer surface of the movable ring (702); a short shaft (706) is slidably connected to the inside of the rectangular groove; and the end of the short shaft (706) away from the movable ring (702) is slidably connected to the inside of the annular wave groove.

7. The automatic tightening machine for screws and nuts according to claim 6, characterized in that: The outer surface of the L ring (701) is provided with a rotating mechanism (8), and the rotating mechanism (8) includes a plurality of gear shafts (801) meshingly connected to the side wall of the gear ring; the outer surface of the gear shaft (801) is rotatably connected to a right-angle plate; one end of the right-angle plate close to the L ring (701) is fixedly connected to the outer surface of the L ring (701); one end of the gear shaft (801) away from the right-angle ring (705) is fixedly connected to an obtuse-angle plate (802); the side of the obtuse-angle plate (802) away from the gear shaft (801) is rotatably connected to a connecting rod (803); one end of a plurality of connecting rods (803) away from the obtuse-angle plate (802) is rotatably connected to an obtuse-angle tube (804); and the obtuse-angle tube (804) is slidably connected to the outer surface of the moving ring (702).

8. A method for using an automatic tightening machine for screws and nuts, characterized in that: Using the automatic tightening machine for screws and nuts as claimed in claim 7, the method comprises the following steps: S1: connection and transportation; S2: mobile gripping; S3: Turn and tighten.

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