Tapping machine for nut machining

Abstract

The invention relates to the technical field of iron tower erection, in particular to a tapping machine for nut machining, which comprises a machine base, a support is transversely and fixedly connected to the middle of the upper surface of the machine base, a plurality of discharging mechanisms are equidistantly mounted on the front surface of the support from left to right, and a material box is mounted at the top ends of the discharging mechanisms and used for storing workpieces. A plurality of tapping mechanisms in one-to-one correspondence with the discharging mechanisms are installed on the front side of the upper surface of the machine base from left to right at equal intervals, tapping operation is conducted on workpieces through the tapping mechanisms, a broken cutter detection mechanism is installed on the rear sides of the tapping mechanisms, and a screening mechanism is transversely installed at the bottom of the support. The discharging mechanism comprises a hollow material guide plate vertically installed on the front face of the support, and the front side of the material guide plate is open. And drill bit breakage is monitored, workers are reminded that the drill bit is damaged, the drill bit is replaced in time, the workpiece tapping efficiency is prevented from being reduced, the purpose of thoroughly separating scrap iron from a workpiece is achieved, and the scrap iron is prevented from scratching the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of iron tower erection, and in particular to a tapping machine for nut processing. Background Art

[0002] Iron towers are high towers made of steel, usually used to erect high-voltage transmission lines. They are widely used in various industries such as electricity, communications, factories, and construction. The footing is the foundation for the tower to be erected; In order to ensure the stability of the iron tower, it depends on numerous bolts and nuts. The nuts used in the iron tower need to go through stamping and tapping processes. The nuts of the iron tower are tapped using a four-axis tapping machine, which can tap multiple workpieces at the same time. During continuous tapping, the drill bit is prone to breakage. If it cannot be replaced in time, the tapping efficiency will be reduced. In addition, a large amount of iron filings will be generated during tapping. In order to separate the iron filings from the nuts, a sieve plate with leak holes is often used to allow the iron filings to fall off. However, due to the influence of oil pollution, the iron filings are very easy to clog the sieve plate, and the nuts carrying iron filings will scratch the nuts. Therefore, it is necessary to provide a nut processing and tapping machine with a drill bit damage monitoring function. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art that the drill bit cannot be monitored during the tapping process and the iron filings and nuts are not completely separated, the present invention provides a tapping machine for nut processing.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tapping machine for nut processing, comprising a machine base, a bracket being laterally fixedly connected to the middle of the upper surface of the machine base, a plurality of unloading mechanisms being equidistantly installed on the front side of the bracket from left to right, a material box being installed on the top of the unloading mechanism, the material box being used for storing workpieces, a plurality of tapping mechanisms corresponding to the unloading mechanisms being equidistantly installed on the front side of the upper surface of the machine base from left to right, the workpiece being tapped by the tapping mechanisms, a broken knife detection mechanism being installed on the rear side of the tapping mechanism, and a screening mechanism being laterally installed on the bottom of the bracket.

[0005] Preferably, the unloading mechanism includes a material guide plate vertically installed on the front side of the bracket, the material guide plate is hollow and the front side is open, the top of the material guide plate is fixedly connected to the bottom of the material box, and the workpiece is limited by the inner space of the material guide plate, the first sprockets are installed on the upper and lower ends and the left and right sides of the inner cavity of the material guide plate through pins, the two groups of the first sprockets on the left and right sides are chain-connected with the first chain, and a number of clamping blocks are equidistantly installed on the outer wall of the first chain, and a driving assembly that can drive the first sprocket to rotate is installed on the top of the front side of the material guide plate; the first motor is controlled to rotate a fixed angle each time, so that the workpiece can be accurately transported to the tapping station.

[0006] Preferably, the opposing surfaces of the two opposing clamping blocks on the left and right are both triangular.

[0007] Preferably, the driving assembly includes a dustproof shell installed on the top of the front side of the guide plate, and rotating shafts capable of rotating around their own axes are installed on the left and right sides of the inner cavity of the dustproof shell through bearings, and the rear side of the rotating shaft is connected to the first sprocket, and the outer wall of the rotating shaft is installed with mutually meshing gears, and the two first sprockets on the left and right sides can rotate in opposite directions through two gear transmissions, and a first motor is installed on the front side of the dustproof shell, and the output end of the first motor is connected to one of the rotating shafts.

[0008] Preferably, the tapping mechanism includes a vertical plate installed at the front end of the upper surface of the machine base, sliding sleeves are installed on the left and right sides of the front face of the vertical plate, a sliding rod that can slide back and forth is inserted into the inner cavity of the sliding sleeve, a support plate is installed at the rear end of the sliding rod, a hydraulic cylinder for driving the support plate to move back and forth is installed in the middle of the front face of the vertical plate, a rotating cylinder is installed on the upper surface of the support plate, a guide plate is installed on the top of the rotating cylinder, a drill bit is installed at the output end of the rotating cylinder, the extension line of the center line of the drill bit points to the center line of the guide plate, when the rotating cylinder drives the drill bit to rotate, the drill bit performs tapping on the workpiece; with the cooperation of the sliding sleeve and the sliding rod, the hydraulic cylinder allows the drill bit to move smoothly, thereby enabling the drill bit to complete the tapping of the workpiece.

[0009] Preferably, the rear side of the upper surface of the guide plate is an inclined surface.

[0010] Preferably, the broken knife detection mechanism includes two support rods, and the two support rods are respectively installed at the left and right ends of the top rear side of the vertical plate in the front-to-back direction, and a U-shaped mounting seat is installed at the rear end of the support rod, and an alarm light is installed on the right side of the upper surface of the mounting seat. When the alarm light is on, it is used to alarm the drill bit breakage, and a laser emitting sensor and a laser receiving sensor are respectively installed on the left and right sides of the mounting seat, and the laser receiving sensor is electrically connected to the alarm light, and a sensing component is vertically installed in the middle of the top of the mounting seat; once the drill bit is broken, the laser emitted by the laser emitting sensor will be captured by the laser receiving sensor, causing the alarm light to light up and alarm, thereby monitoring the drill bit.

[0011] Preferably, the sensing component includes a limit cylinder vertically installed on the top of the mounting seat, a spring and a lifting column are respectively inserted at the upper and lower ends of the inner cavity of the limit cylinder, a roller is installed at the bottom of the lifting column, and the roller is pushed to contact the upper surface of the guide plate under the action of the spring force, a first contact is installed on the top of the lifting column, and the first contact is externally connected to a power supply, a second contact is installed on the top of the inner cavity of the limit cylinder, and the second contact is electrically connected to the laser emitting sensor and the laser receiving sensor.

[0012] Preferably, the first contact and the second contact are located opposite to each other in vertical direction.

[0013] Preferably, the screening mechanism includes base plates respectively installed on the left and right sides of the bracket, a frame is installed at the bottom of the base plate, a vibration motor is installed on the outer wall of the frame, a plurality of cross bars are installed at equal distances from left to right on the bottom of the frame, and the workpiece is supported by the cross bars, slideways are provided on the upper and lower inner walls of the base plate, a second sprocket wheel that can rotate is installed on the front and rear sides of the inner cavity of the base plate through a pin shaft, the outer wall of the second sprocket wheel is chain-connected with a second chain, a second motor connected to one of the second sprocket wheels is installed on the outer side of the base plate, the second sprocket wheel is rotated under the drive of the second motor, and then the second chain moves, and the inner cavity of the slideway is plugged with a first The first slider is hollow, a second slider capable of sliding up and down is inserted into the inner cavity of the first slider, and the second slider is connected to the second chain through a pin shaft, so that the second chain pulls the second slider to move, thereby enabling the first slider to slide back and forth in the inner cavity of the slideway, a reinforcing rib is laterally installed on the inner side of the second slider, and a plurality of levers are equidistantly installed from left to right on the lower surface of the reinforcing rib, and the lever is inserted between the two cross bars; under the cooperation of the second sprocket, the second chain, the first slider and the second slider, the reinforcing rib moves from front to back, and the lever removes iron filings between the cross bars to prevent the gap between the cross bars from being blocked and affecting the separation of the iron filings and the nuts.

[0014] Preferably, the crossbar slopes downward from front to back.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention enables the roller to drive the lifting column to rise or fall by moving the guide plate back and forth. When descending, the drill bit taps the workpiece, and the laser emitting sensor and the laser receiving sensor are not energized. When rising, the first contact contacts the second contact, and the laser emitting sensor emits laser. When the drill bit breaks, the laser will be captured by the laser receiving sensor, and the laser receiving sensor energizes the alarm light, which lights up to alarm, monitors the breakage of the drill bit, and reminds the staff that the drill bit is damaged, so that the drill bit can be replaced in time to prevent the tapping efficiency of the workpiece from being reduced.

[0016] 2. The present invention drives the second sprocket to rotate through the second motor, and the second slider moves along the second chain as the motion trajectory. Under the limiting action of the first slider on the second slider, the second slider drives the reinforcing rib to move from front to back, and the lever pushes away the iron filings stuck between the cross bars, providing conditions for the iron filings to fall, thereby achieving the purpose of completely separating the iron filings from the workpiece and preventing the iron filings from scratching the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the blanking mechanism of the present invention; Figure 3 It is a front cross-sectional view of the blanking mechanism of the present invention; Figure 4 It is a top view cross-sectional view of the drive assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the tapping mechanism of the present invention; Figure 6 This is a schematic diagram of the guide plate structure of the present invention; Figure 7 It is a structural schematic diagram of the broken knife detection mechanism of the present invention; Figure 8 It is a left side cross-sectional view of the sensing component of the present invention; Fig. 9 It is a schematic diagram of the structure of the screening mechanism of the present invention; Fig.10 It is a left side cross-sectional view of the screening mechanism of the present invention; Fig.11 For the present invention Fig. 9 Enlarged view of point A in the middle.

[0018] In the figure: 1, machine base; 2, bracket; 3, feeding mechanism; 4, material box; 5, tapping mechanism; 6, broken knife detection mechanism; 7, screening mechanism; 31, guide plate; 32, first sprocket; 33, first chain; 34, clamping block; 35, driving assembly; 351, dust cover; 352, rotating shaft; 353, gear; 354, first motor; 51, vertical plate; 52, sliding sleeve; 53, sliding rod; 54, supporting plate; 55, hydraulic cylinder; 56, rotating cylinder; 57, guide plate; 58, drill bit; 61, support Support rod; 62, mounting seat; 63, warning light; 64, laser emitting sensor; 65, laser receiving sensor; 66, sensing component; 661, limiting cylinder; 662, spring; 663, lifting column; 664, roller; 665, first contact; 666, second contact; 71, base plate; 72, frame; 73, cross bar; 74, slideway; 75, second sprocket; 76, second chain; 77, second motor; 78, first slider; 79, second slider; 710, reinforcing rib; 711, lever. DETAILED DESCRIPTION

[0019] 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.

[0020] The present invention provides a technical solution: Figure 1-Figure 11As shown, a tapping machine for nut processing includes a machine base 1, a bracket 2 is transversely fixedly connected to the middle of the upper surface of the machine base 1, a plurality of feeding mechanisms 3 are equidistantly installed on the front of the bracket 2 from left to right, a material box 4 is installed on the top of the feeding mechanism 3, and the material box 4 is used for storing workpieces, a plurality of tapping mechanisms 5 corresponding to the feeding mechanisms 3 are equidistantly installed on the front side of the upper surface of the machine base 1 from left to right, and the workpiece is tapped by the tapping mechanism 5, a broken knife detection mechanism 6 is installed on the rear side of the tapping mechanism 5, and a screening mechanism 7 is transversely installed on the bottom of the bracket 2.

[0021] The material unloading mechanism 3 includes a material guide plate 31 vertically installed on the front side of the bracket 2. The material guide plate 31 is hollow and has an opening on the front side. The top of the material guide plate 31 is fixedly connected to the bottom of the material box 4, and the inner cavity space of the material guide plate 31 limits the workpiece. The first sprocket 32 ​​is installed on both the upper and lower ends and the left and right sides of the inner cavity of the material guide plate 31 through pins. The two groups of first sprockets 32 on the left and right sides are chain-connected with the first chain 33. A number of clamping blocks 34 are equidistantly installed on the outer wall of the first chain 33. The opposing surfaces of the two clamping blocks 34 opposite to each other are both triangular. The workpiece is clamped by the concave surface of the clamping block 34 to prevent the workpiece from rotating during tapping. A driving component 35 that can drive the first sprocket 32 ​​to rotate is installed on the top of the front side of the material guide plate 31.

[0022] As a preferred embodiment, further, the driving assembly 35 includes a dustproof shell 351 installed on the top of the front side of the guide plate 31, and a rotating shaft 352 capable of rotating around its own axis is installed on both sides of the inner cavity of the dustproof shell 351 through bearings, and the rear side of the rotating shaft 352 is connected to the first sprocket 32, and the outer wall of the rotating shaft 352 is installed with mutually meshing gears 353. The two first sprockets 32 on the left and right sides can rotate in opposite directions through the transmission of the two gears 353, and a first motor 354 is installed on the front side of the dustproof shell 351, and the output end of the first motor 354 is connected to one of the rotating shafts 352.

[0023] As a preferred solution, further, the tapping mechanism 5 includes a vertical plate 51 installed at the front end of the upper surface of the machine base 1, and sliding sleeves 52 are installed on the left and right sides of the front of the vertical plate 51. A sliding rod 53 that can slide back and forth is inserted into the inner cavity of the sliding sleeve 52, and a support plate 54 is installed at the rear end of the sliding rod 53. A hydraulic cylinder 55 for driving the support plate 54 to move back and forth is installed in the middle of the front of the vertical plate 51, and a rotating cylinder 56 is installed on the upper surface of the support plate 54. A guide plate 57 is installed on the top of the rotating cylinder 56. The rear side of the upper surface of the guide plate 57 is an inclined surface, which can trigger the broken knife detection mechanism 6. A drill bit 58 is installed at the output end of the rotating cylinder 56, and the extension line of the center line of the drill bit 58 points to the center line of the guide plate 31. When the rotating cylinder 56 drives the drill bit 58 to rotate, the drill bit 58 performs tapping on the workpiece.

[0024] As a preferred solution, further, the broken knife detection mechanism 6 includes two support rods 61, and the two support rods 61 are respectively installed at the left and right ends of the top rear side of the vertical plate 51 along the front-to-back direction. A U-shaped mounting seat 62 is installed at the rear end of the support rod 61, and an alarm light 63 is installed on the right side of the upper surface of the mounting seat 62. When the alarm light 63 is on, it is used to alarm when the drill bit 58 is broken. A laser emitting sensor 64 and a laser receiving sensor 65 are respectively installed on the left and right sides of the mounting seat 62, and the laser receiving sensor 65 is electrically connected to the alarm light 63. A sensing component 66 is vertically installed in the middle of the top of the mounting seat 62.

[0025] As a preferred solution, further, the sensing component 66 includes a limit cylinder 661 vertically installed on the top of the mounting seat 62, and a spring 662 and a lifting column 663 are respectively inserted at the upper and lower ends of the inner cavity of the limit cylinder 661, and a roller 664 is installed at the bottom of the lifting column 663. Under the action of the elastic force of the spring 662, the roller 664 is pushed to contact the upper surface of the guide plate 57, and a first contact 665 is installed on the top of the lifting column 663, and the first contact 665 is externally connected to a power supply, and a second contact 666 is installed on the top of the inner cavity of the limit cylinder 661, and the second contact 666 is electrically connected to the laser emitting sensor 64 and the laser receiving sensor 65.

[0026] As a preferred solution, further, the first contact 665 and the second contact 666 are positioned opposite to each other vertically, ensuring that when the lifting column 663 rises, the first contact 665 and the second contact 666 are in contact.

[0027] As a preferred solution, further, the screening mechanism 7 includes base plates 71 respectively installed on the left and right sides of the bracket 2, a frame 72 is installed at the bottom of the base plate 71, and a vibration motor is installed on the outer wall of the frame 72 to make the frame 72 vibrate so that the iron filings dropped on the cross bar 73 fall down, and a plurality of cross bars 73 are installed equidistantly from left to right at the bottom of the frame 72 to support the workpiece through the cross bars 73, and the cross bars 73 are tilted downward from front to back so that the nut can slide down along the inclined surface of the cross bars 73, and slideways 74 are provided on the upper and lower inner walls of the base plate 71, and a second sprocket 75 that can rotate is installed on the front and rear sides of the inner cavity of the base plate 71 through a pin shaft, and the outer wall of the second sprocket 75 is chain-connected with a second chain 76, and the outer side of the base plate 71 is installed with a A second motor 77 connected to one of the second sprockets 75 drives the second motor 77 to rotate the second sprocket 75, thereby moving the second chain 76. A first slider 78 is inserted into the inner cavity of the slideway 74, and the first slider 78 is hollow. A second slider 79 that can slide up and down is inserted into the inner cavity of the first slider 78, and the second slider 79 is connected to the second chain 76 through a pin shaft, so that the second chain 76 pulls the second slider 79 to move, thereby enabling the first slider 78 to slide back and forth in the inner cavity of the slideway 74. A reinforcing rib 710 is installed laterally on the inner side of the second slider 79, and a plurality of shifting rods 711 are installed equidistantly from left to right on the lower surface of the reinforcing rib 711, and the shifting rod 711 is inserted between the two cross bars 73.

[0028] Working principle: Step 1: Put the workpiece into the material box 4, and drive the rotating shaft 352 to rotate through the first motor 354. Since the two gears 353 are meshed with each other, the two first sprockets 32 on the left and right sides can rotate synchronously in opposite directions, thereby making the left and right opposite clamping blocks 34 move downward. The two clamping blocks 34 clamp the workpiece and move from top to bottom, and transport the workpiece to the tapping point in sequence to realize the workpiece loading; Step 2: The support plate 54 is driven by the hydraulic cylinder 55 to move backwards through the cooperation of the sliding sleeve 52 and the sliding rod 53, and the rotary cylinder 56 drives the drill bit 58 to rotate, and the drill bit 58 completes tapping of the workpiece; Step three, when the drill bit 58 moves backward, the height of the upper surface of the guide plate 57 decreases, thereby pushing the roller 664 down under the elastic force of the spring 662, and the lifting column 663 drives the first contact 665 away from the second contact 666. When the drill bit 58 completes the tapping and moves forward, the inclined surface of the guide plate 57 squeezes the roller 664 to rise, so that the first contact 665 contacts the second contact 666, and the laser transmitting sensor 64 and the laser receiving sensor 65 are powered on. The laser transmitting sensor 64 emits a laser in the direction of the laser receiving sensor 65. If the laser is blocked by the drill bit 58, it means that the drill bit 58 is not broken. If the laser is captured by the laser receiving sensor 65, the laser receiving sensor 65 powers on the alarm light 63, and the alarm light 63 lights up, indicating that the drill bit 58 is damaged, reminding the staff to replace the drill bit 58 in time. Step 4: After the workpiece is tapped, a nut is obtained. The nut falls onto the cross bar 73 under the conveyance of the clamp block 34. The iron chips generated during tapping pass through the gaps between the cross bars 73. Under the action of the vibration motor, the cross bar 73 vibrates, and the nut can move backward along the inclined surface of the cross bar 73, thereby separating the iron chips from the nut. At the same time, the second motor 77 drives the second sprocket 75 to rotate. Under the condition of the rotation of the second sprocket 75, the second chain 76 pulls the second slider 79 to move. Since the second slider 79 can slide up and down along the inner wall of the first slider 78 at a position close to the two second sprockets 75, the first slider 78 moves forward and backward. When the first slider 78 moves backward, the lever 711 is inserted into the gap between the two cross bars 73. The lever 711 pushes away the iron filings stuck between the cross bars 73 to prevent the iron filings from falling, allowing the nut and the iron filings to be completely separated.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tapping machine for nut processing, comprising a machine base (1), characterized in that: A bracket (2) is transversely fixedly connected to the middle of the upper surface of the machine base (1); a plurality of unloading mechanisms (3) are equidistantly installed on the front of the bracket (2) from left to right; a material box (4) is installed on the top of the unloading mechanism (3); the material box (4) is used to store workpieces; a plurality of tapping mechanisms (5) corresponding to the unloading mechanisms (3) are equidistantly installed on the front side of the upper surface of the machine base (1) from left to right; the workpiece is tapped by the tapping mechanisms (5); a broken blade detection mechanism (6) is installed on the rear side of the tapping mechanism (5); and a screening mechanism (7) is transversely installed on the bottom of the bracket (2); The material unloading mechanism (3) comprises a material guide plate (31) vertically mounted on the front side of the bracket (2); the material guide plate (31) is hollow and has an open front side; the top of the material guide plate (31) is fixedly connected to the bottom of the material box (4); the inner cavity space of the material guide plate (31) serves to limit the position of the workpiece; first sprockets (32) are mounted on both upper and lower ends and left and right sides of the inner cavity of the material guide plate (31) via pins; two groups of the first sprockets (32) located on the left and right sides are chain-connected to a first chain (33); a plurality of clamping blocks (34) are equidistantly mounted on the outer wall of the first chain (33); and a driving assembly (35) capable of driving the first sprocket (32) to rotate is mounted on the top of the front side of the material guide plate (31).

2. A tapping machine for nut processing according to claim 1, characterized in that: The opposing surfaces of the two clamping blocks (34) opposite to each other on the left and right are both triangular.

3. A tapping machine for nut processing according to claim 2, characterized in that: The driving assembly (35) comprises a dustproof shell (351) mounted on the top of the front face of the guide plate (31); a rotating shaft (352) capable of rotating around its own axis is mounted on both left and right sides of the inner cavity of the dustproof shell (351) through bearings, and the rear side of the rotating shaft (352) is connected to the first sprocket (32); a gear (353) meshing with each other is mounted on the outer wall of the rotating shaft (352); the two first sprockets (32) on the left and right sides can rotate in opposite directions through the transmission of the two gears (353); a first motor (354) is mounted on the front face of the dustproof shell (351), and the output end of the first motor (354) is connected to one of the rotating shafts (352).

4. A tapping machine for nut processing according to claim 3, characterized in that: The tapping mechanism (5) comprises a vertical plate (51) mounted on the front end of the upper surface of the machine base (1); sliding sleeves (52) are mounted on both left and right sides of the front of the vertical plate (51); a sliding rod (53) capable of sliding forward and backward is inserted into the inner cavity of the sliding sleeve (52); a support plate (54) is mounted at the rear end of the sliding rod (53); a hydraulic cylinder (55) for driving the support plate (54) to move forward and backward is mounted in the middle of the front of the vertical plate (51); a rotating cylinder (56) is mounted on the upper surface of the support plate (54); a guide plate (57) is mounted on the top of the rotating cylinder (56); a drill bit (58) is mounted on the output end of the rotating cylinder (56); an extension line of the center line of the drill bit (58) points to the center line of the guide plate (31); when the rotating cylinder (56) drives the drill bit (58) to rotate, the drill bit (58) performs a tapping operation on the workpiece.

5. A tapping machine for nut processing according to claim 4, characterized in that: The rear side of the upper surface of the guide plate (57) is an inclined surface.

6. A tapping machine for nut processing according to claim 5, characterized in that: The broken-knife detection mechanism (6) comprises two support rods (61), the two support rods (61) being respectively mounted on the left and right ends of the top of the rear side of the vertical plate (51) in the front-to-back direction, a U-shaped mounting seat (62) being mounted on the rear end of the support rod (61), an alarm light (63) being mounted on the right side of the upper surface of the mounting seat (62), and being used to alarm when the alarm light (63) is lit, a laser emitting sensor (64) and a laser receiving sensor (65) are respectively mounted on the left and right sides of the mounting seat (62), and the laser receiving sensor (65) is electrically connected to the alarm light (63), and a sensing component (66) is vertically mounted on the middle of the top end of the mounting seat (62).

7. A tapping machine for nut processing according to claim 6, characterized in that: The sensing component (66) comprises a limiting cylinder (661) vertically mounted on the top of the mounting seat (62); a spring (662) and a lifting column (663) are respectively inserted at the upper and lower ends of the inner cavity of the limiting cylinder (661); a roller (664) is mounted at the bottom of the lifting column (663); the roller (664) is pushed to contact the upper surface of the guide plate (57) under the elastic force of the spring (662); a first contact (665) is mounted on the top of the lifting column (663); and the first contact (665) is externally connected to a power source; a second contact (666) is mounted on the top of the inner cavity of the limiting cylinder (661); and the second contact (666) is electrically connected to the laser emitting sensor (64) and the laser receiving sensor (65).

8. A tapping machine for nut processing according to claim 7, characterized in that: The first contact (665) and the second contact (666) are located opposite to each other in vertical direction.

9. A tapping machine for nut processing according to claim 8, characterized in that: The screening mechanism (7) comprises base plates (71) respectively mounted on the left and right sides of the bracket (2); a frame (72) is mounted on the bottom of the base plate (71); a vibration motor is mounted on the outer wall of the frame (72); a plurality of cross bars (73) are mounted at equal distances from left to right on the bottom of the frame (72); the workpiece is supported by the cross bars (73); slideways (74) are provided on the upper and lower inner walls of the base plate (71); second sprocket wheels (75) capable of rotating are mounted on the front and rear sides of the inner cavity of the base plate (71) via pins; the outer wall of the second sprocket wheel (75) is chain-connected with a second chain (76); a second motor (77) connected to one of the second sprocket wheels (75) is mounted on the outer side of the base plate (71); and under the drive of the second motor (77), the second motor (77) drives the second motor (77) to rotate. The second sprocket (75) is rotated to move the second chain (76). The inner cavity of the slideway (74) is plugged with a first slider (78), and the first slider (78) is hollow. The inner cavity of the first slider (78) is plugged with a second slider (79) that can slide up and down, and the second slider (79) is connected to the second chain (76) through a pin shaft, so that the second chain (76) pulls the second slider (79) to move, thereby enabling the first slider (78) to slide back and forth in the inner cavity of the slideway (74). A reinforcing rib (710) is installed laterally on the inner side of the second slider (79), and a plurality of shifting rods (711) are installed equidistantly from left to right on the lower surface of the reinforcing rib (711), and the shifting rods (711) are plugged between the two cross bars (73).

10. A tapping machine for nut processing according to claim 9, characterized in that: The cross bar (73) slopes downward from front to back.

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