Nut tapping device

Abstract

The application relates to the field of nut production devices, in particular to a nut tapping device, which comprises a rack, a gas cylinder I is fixed on the rack, a sliding plate is fixed at the end of the piston rod of the gas cylinder I, through holes penetrating through the sliding plate are uniformly arranged on the sliding plate, a discharging pipe is fixed on the sliding plate above the through holes, a material lifting motor is fixed on the rack below the sliding plate, a sliding table is arranged above the material lifting motor, a lead screw is fixed at the output end of the material lifting motor, the lead screw penetrates through the sliding table and is in threaded connection with the sliding table, a lifting rod is fixed at the corresponding position of the discharging pipe on the sliding table, a lifting block is fixed at the top of the lifting rod, gas cylinders II are fixed on the two sides of the rack above the sliding plate, gas cylinders III are fixed at the ends of the piston rods of the gas cylinders II, push plates are fixed at the ends of the piston rods of the gas cylinders III, and limit grooves are arranged on the push plates at the corresponding positions of the discharging pipes. The device can realize tapping operation on multiple nut blanks at a time.

Description

[Technical Field]

[0001] This invention relates to the field of nut production equipment, and more particularly to a nut tapping device. [Background Technology]

[0002] Nuts, also known as bolts or nuts, are fasteners that are screwed onto bolts or screws to secure a machine. They are essential components in all manufacturing machinery. Based on their material, they are classified into several types, including carbon steel, stainless steel, and non-ferrous metals (such as copper).

[0003] Nuts are typically tapped with internal threads using a nut tapping machine. A nut tapping machine is a machining device that processes internal threads, screw threads, or threads on the inner surface of holes in various parts such as nuts and flanges, which have through holes or blind holes of various specifications. Its function is similar to tapping internal threads with a tap. A common thread tapping machine is disclosed in patent application number CN201911298089.3, which describes an automatic tapping device for hexagonal nuts. This device uses a vibratory feeder to divide the nuts into individual pieces and transport them to the tapping assembly, where the tapping assembly performs the tapping process. However, this type of tapping device can only tap one nut blank at a time, resulting in low nut production efficiency.

[0004] This invention was proposed in response to the shortcomings of existing technologies. [Summary of the Invention]

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nut tapping device.

[0006] This invention can be achieved through the following technical solutions:

[0007] This invention discloses a nut tapping device, comprising a frame, on which a cylinder I is fixed. A sliding plate is fixed to the end of the piston rod of cylinder I. Through holes are evenly distributed on the sliding plate. A feeding tube is fixed to each of the sliding plates above the through holes. A top-feeding motor is fixed to the frame below the sliding plate. A slide table is arranged above the top-feeding motor. A lead screw is fixed to the output end of the top-feeding motor, passing through the slide table and threadedly connected to it. A top rod is fixed to each position on the slide table corresponding to the feeding tube. A top block is fixed to the top of each top rod. Cylinders II are symmetrically fixed to both sides of the frame above the sliding plate. Cylinders III are fixed to the ends of the piston rods of cylinders II. The ends are all fixed to the push plate. The push plate is provided with limit grooves at the corresponding positions of the feeding pipe. The frame is also fixed with a support plate that works with the push plate. A lifting motor is fixed on the frame above the support plate. A lifting plate is also provided below the lifting motor. A threaded pipe is fixed on the lifting plate. A screw is fixed at the output end of the lifting motor. The end of the screw is set in the threaded pipe and threadedly connected to the threaded pipe. A tapping rod is provided at the corresponding position of the feeding pipe on the lifting plate. The tapping rod is driven to rotate by a tapping motor. A cylinder IV is also fixed on the frame on one side of the lifting plate. A slider is fixed at the end of the piston rod of the cylinder IV. A top material pipe is fixed on the slider at the corresponding position of the tapping rod.The blanks to be tapped are stacked in each feed tube. Cylinder I is activated, and the piston rod on cylinder I extends. After the feed tube reaches between the push plate and the slide, the ejector motor is activated, driving the lead screw to rotate. Since the lead screw passes through the slide and is threadedly connected to it, the slide moves in the direction of the lead screw when the lead screw rotates. The ejector rod on the slide moves with the slide, and the ejector block passes through the corresponding through hole and enters each feed tube. After the ejector block contacts the nut blank, it pushes the blank to rise in the feed tube. The uppermost blank in the feed tube enters... After the material reaches the upper limit groove of the push plate, cylinder II is activated, the piston rod on cylinder II extends, the push plate moves, and the blank in the limit groove moves with the push plate. After the blank reaches directly below the tapping rod, the lifting motor is activated, driving the screw to rotate. Since the screw is threadedly connected to the limit tube, the limit tube moves in the screw direction when the screw rotates, the lifting plate descends, and the tapping motor drives each tapping rod to rotate. After the tapping rod contacts the center hole of the blank, it performs the tapping operation. After the blank is tapped, the tapping motor drives the tapping rod to reverse. The screw rotates in the opposite direction, and the lifting motor drives the screw to rotate in the opposite direction. After the tapping rod separates from the blank, cylinder III starts, the piston rod on cylinder III extends, the push plate moves, and after the push plate separates from the support plate, the piston rod on cylinder IV extends, the slider descends, the top material tube descends, and the top material tube enters the limit groove to push out the tapped nut. After the nut is pushed out, cylinder IV starts again, the piston rod on cylinder IV shortens, the top material tube separates from the push plate, cylinder II starts again, the piston rod on cylinder II shortens, cylinder III starts again, and the piston rod on cylinder III extends... The stopper rod shortens, the push plate returns to its initial position, the ejector motor restarts, and the ejector motor drives the lead screw to rotate a certain number of times. The uppermost blank in the discharge tube re-enters the limiting groove of the push plate, and the cycle continues. This device can perform tapping operations on multiple nut blanks at once. Furthermore, by driving the screw to rotate through the lifting motor, the tapping rod is lowered. This ensures that the lowering speed of the tapping rod is consistent with the pitch on the tapping rod. When the tapping rod is tapping, the displacement of the tapping rod is made consistent with the tapping pitch, reducing the wear of the tapping rod.

[0008] Preferably, limit rings are fixed on the push plate above the limiting groove. By setting the limit rings to limit the blank, the blank is prevented from moving with the tapping rod, which would cause wear on the tapping rod.

[0009] Preferably, the support plate is provided with clearance holes at positions corresponding to the tapping rod. These clearance holes allow the tapping rod to completely penetrate the blank.

[0010] Preferably, a main sprocket is fixed to the output end of the tapping motor, and a driven sprocket is fixed to each tapping rod at a position corresponding to the main sprocket. The main chain is wound around the driven sprockets. By cooperating with the driven sprockets, the tapping rod is driven to rotate, thereby achieving precise control of the rotation of each tapping rod by the tapping motor.

[0011] Preferably, a limit tube is also fixed on the lifting plate, and a limit rod is also fixed on the frame, with the limit rod slidably connected to the limit tube.

[0012] Preferably, one end of the top material pipe is connected to an air pump, and the other end of the top material pipe is also provided with multiple air holes. After the top material pipe enters the limiting groove, the high-pressure gas compressed by the air pump is ejected through the air holes, and the high-pressure gas cleans the iron filings in the limiting groove.

[0013] Compared with existing technologies, the present invention has the following advantages:

[0014] This device can perform tapping operations on multiple nut blanks at once. The screw is driven to rotate by a lifting motor, which in turn drives the tapping rod to descend. The descent speed of the tapping rod is consistent with the pitch on the tapping rod. When the tapping rod is tapping, the displacement of the tapping rod is consistent with the tapping pitch, which reduces the wear of the tapping rod. [Attached Image Description]

[0015] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention from another angle;

[0018] Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0019] Figure 4 This is a front view of the present invention;

[0020] Figure 5 for Figure 4 Sectional view at point AA;

[0021] Figure 6 for Figure 5 Enlarged view at point C;

[0022] In the diagram: 1. Frame; 2. Ejector motor; 3. Lead screw; 4. Slide table; 5. Ejector rod; 6. Ejector block; 7. Cylinder I; 8. Slide plate; 9. Discharge pipe; 10. Through hole; 11. Blank; 12. Cylinder II; 13. Cylinder III; 14. Push plate; 15. Limiting groove; 16. Limiting ring; 17. Support plate; 18. Clearance hole; 19. Lifting plate; 20. Tapping rod; 21. Tapping motor; 22. Main sprocket; 23. Driven sprocket; 24. Chain; 25. Threaded pipe; 26. Lifting motor; 27. Screw; 28. Limiting pipe; 29. ​​Limiting rod; 30. Cylinder IV; 31. Slider; 32. Ejector pipe; 33. Air hole;

Detailed Implementation Methods

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0024] Example 1:

[0025] like Figures 1 to 6As shown, this embodiment discloses a nut tapping device, including a frame 1. A cylinder I 7 is fixed on the frame 1. A slide plate 8 is fixed to the end of the piston rod of the cylinder I 7. Through holes 10 are evenly arranged on the slide plate 8. A feed tube 9 is fixed on the slide plate 8 above the through holes 10. A top-feeding motor 2 is fixed on the frame 1 below the slide plate 8. A slide table 4 is arranged above the top-feeding motor 2. A lead screw 3 is fixed to the output end of the top-feeding motor 2. The lead screw 3 passes through the slide table 4 and is threadedly connected to the slide table 4. A top rod 5 is fixed on the slide table 4 at a position corresponding to the feed tube 9. A top block 6 is fixed to the top of the top rod 5. Cylinders II 12 are symmetrically fixed on the frame 1 on both sides above the slide plate 8. Cylinders III 13 are fixed to the end of the piston rod of the cylinders II 12. The end of the piston rod of the cylinders III 13 is fixed to a push plate 14. Limiting grooves 15 are provided on the push plate 14 at positions corresponding to the discharge pipe 9. A support plate 17 that works with the push plate 14 is also fixed on the frame 1. A lifting motor 26 is fixed on the frame 1 above the support plate 17. A lifting plate 19 is also provided below the lifting motor 26. A threaded pipe 25 is fixed on the lifting plate 19. A screw 27 is fixed at the output end of the lifting motor 26. The end of the screw 27 is set inside the threaded pipe 25 and threadedly connected to the threaded pipe 25. A tapping rod 20 is provided on the lifting plate 19 at positions corresponding to the discharge pipe 9. The tapping rod 20 is driven to rotate by the tapping motor 21. A cylinder IV 30 is also fixed on the frame 1 on one side of the lifting plate 19. A slider 31 is fixed at the end of the piston rod of the cylinder IV 30. A top material pipe 32 is fixed on the slider 31 at a position corresponding to the tapping rod 20.The blanks 11 to be tapped are stacked in each of the feeding tubes 9. Cylinder I7 is started, and the piston rod on cylinder I7 extends. After the feeding tubes 9 reach between the push plate 14 and the slide table 4, the ejector motor 2 is started, driving the lead screw 3 to rotate. Since the lead screw 3 passes through the slide table 4 and is threadedly connected to the slide table 4, when the lead screw 3 rotates, the slide table 4 moves in the direction of the lead screw 3. The ejector rod 5 on the slide table 4 moves with the slide table 4. The ejector block 6 passes through the corresponding through hole 10 and enters each of the feeding tubes 9. After the ejector block 6 contacts the nut blanks 11, it pushes the blanks 11 to rise in the feeding tubes 9. The uppermost blank in the feeding tubes 9 enters the upper limit groove of the push plate 14. After 15 seconds, cylinder II 12 starts, the piston rod on cylinder II 12 extends, the push plate 14 moves, and the blank 11 in the limiting groove 15 moves with the push plate 14. After the blank 11 reaches the support plate 17 directly below the tapping rod 20, the lifting motor 26 starts, driving the screw 27 to rotate. Since the screw 27 is threadedly connected to the limiting tube 28, when the screw 27 rotates, the limiting tube 28 moves in the direction of the screw 27, the lifting plate 19 descends, and the tapping motor 21 drives each tapping rod 20 to rotate. After the tapping rod 20 contacts the center hole of the blank 11, it performs tapping operation on the blank 11. After the blank 11 is tapped, the tapping motor... 21 drives the tapping rod 20 to rotate in the opposite direction, and the lifting motor 26 drives the screw 27 to rotate in the opposite direction. After the tapping rod 20 separates from the blank 11, cylinder III 13 starts, the piston rod on cylinder III 13 extends, the push plate 14 moves, after the push plate 14 separates from the support plate 17, the piston rod on cylinder IV 30 extends, the slider 31 descends, the ejector tube 32 descends, the ejector tube 32 enters the limiting groove 15 to eject the tapped nut. After the nut is ejected, cylinder IV 30 starts again, the piston rod on cylinder IV 30 shortens, the ejector tube 32 separates from the push plate 14, cylinder II 12 starts again, the piston rod on cylinder II 12 shortens, cylinder III 1... 3. Upon restarting, the piston rod on cylinder III13 shortens, the push plate 14 returns to its initial position, the top material motor 2 restarts, and the top material motor 2 drives the lead screw 3 to rotate a certain number of times. The uppermost blank 11 in the discharge pipe 9 re-enters the limiting groove 15 of the push plate 14, and the cycle continues. This device can perform tapping operations on multiple nut blanks 11 at once. Furthermore, the lifting motor 26 drives the screw 27 to rotate, thereby causing the tapping rod 20 to descend. This ensures that the descending speed of the tapping rod 20 is consistent with the pitch on the tapping rod. When the tapping rod 20 is tapping, the displacement of the tapping rod 20 is consistent with the tapping pitch, reducing the wear of the tapping rod 20.

[0026] The support plate 17 is provided with clearance holes 18 at positions corresponding to the tapping rod 20. The clearance holes 18 are provided to ensure that the tapping rod 20 can completely penetrate the blank 11.

[0027] The tapping motor 21 has a main sprocket 22 fixed at its output end, and each tapping rod 20 has a driven sprocket 23 fixed at a position corresponding to the main sprocket 22. The main chain 24 is wound around the driven sprockets 23. The chain 24 and the driven sprockets 23 work together to drive the tapping rod 20 to rotate, so that the tapping motor 21 can precisely control the rotation of each tapping rod 20.

[0028] Among them, a limit tube 28 is fixed on the lifting plate 19, and a limit rod 29 is fixed on the frame 1. The limit rod 29 is slidably connected to the limit tube 28.

[0029] Example 2:

[0030] This embodiment discloses a nut tapping device. Based on the structure and principle of Embodiment 1, this embodiment fixes a limiting ring 16 on the push plate 14 above the limiting groove 15. By setting the limiting ring 16 to limit the blank 11, the blank 11 is prevented from moving with the tapping rod 20, thus avoiding wear of the tapping rod 20.

[0031] Example 3:

[0032] This embodiment discloses a nut tapping device. Based on the structure and principle of Embodiment 1 or Embodiment 2, one end of the top material tube 32 is connected to an air pump (not shown), and the other end of the top material tube 32 is also provided with multiple air holes 33. After the top material tube 32 enters the limiting groove 15, the high-pressure gas compressed by the air pump is ejected through the air holes 33, and the high-pressure gas cleans the iron filings in the limiting groove 15.

[0033] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the protection scope of the present invention.

Claims

1. A nut threading device comprising a frame, characterised in that: The rack is fixed with a cylinder I, the piston rod end of the cylinder I is fixed with a sliding plate, the sliding plate is uniformly provided with through holes penetrating the sliding plate, the sliding plate above the through holes is uniformly fixed with a feeding pipe, the rack below the sliding plate is fixed with a feeding motor, the feeding motor is provided with a sliding table above, the feeding motor output end is fixed with a lead screw, the lead screw penetrates the sliding table and is in threaded connection with the sliding table, the sliding table is uniformly fixed with a lifting pin at the position corresponding to the feeding pipe, the lifting pin top is uniformly fixed with a lifting block, the rack two sides above the sliding plate are symmetrically fixed with a cylinder II, the piston rod end of the cylinder II is uniformly fixed with a cylinder III, the piston rod end of the cylinder III is uniformly fixed with a push plate, the push plate is provided with a limiting groove at the position corresponding to the feeding pipe, the rack is further fixed with a supporting plate used in cooperation with the push plate, the rack above the supporting plate is fixed with a lifting motor, the lifting motor is further provided with a lifting plate below, the lifting plate is fixed with a threaded pipe, the lifting motor output end is fixed with a screw rod, the screw rod end is arranged in the threaded pipe and is in threaded connection with the threaded pipe, the lifting plate is provided with a tapping rod at the position corresponding to the feeding pipe, the tapping rod is driven to rotate by a tapping motor, the rack one side of the lifting plate is further fixed with a cylinder IV, the piston rod end of the cylinder IV is fixed with a sliding block, the sliding block is fixed with a feeding pipe at the position corresponding to the tapping rod, the push plate above the limiting groove is uniformly fixed with a limiting ring, the supporting plate is provided with an avoiding hole at the position corresponding to the tapping rod.

2. The nut tapping device of claim 1, wherein: The tapping motor output end is fixed with a main sprocket, the tapping rod is uniformly fixed with a slave sprocket at the position corresponding to the main sprocket, and the main sprocket is wound with a chain and the slave sprocket.

3. The nut threading device of claim 1, wherein: The lifting plate is further fixed with a limiting pipe, the rack is further fixed with a limiting rod, and the limiting rod is in sliding connection with the limiting pipe.

4. The nut threading device of claim 1, wherein: One end of the feeding pipe is connected with an air pump, and the other end of the feeding pipe is further provided with a plurality of air holes.

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