A continuous tapping device for stainless steel nuts

Abstract

The present invention discloses a continuous tapping device for stainless steel nuts, which belongs to the technical field of nut tapping, and comprises a main device, which is used for tapping stainless steel nuts. The main device is provided with a pushing device and a clamping device, wherein the pushing device is used for feeding the stainless steel nuts to be tapped, and the clamping device is used for clamping the stainless steel nuts to be tapped. The tapping mechanism provided by the present invention cooperates with the clamping device to realize continuous tapping of stainless steel nuts. The switching mechanism switches the direction of the tapping cutter during the retraction process, so that the tapping cutter is withdrawn along the internal thread of the stainless steel nut, thereby preventing damage to the internal thread and removing excess burrs in the internal thread; the pushing device realizes continuous feeding of stainless steel nuts, and the clamping device clamps the stainless steel nuts after feeding. After processing is completed, the clamping device releases the clamping of the stainless steel nut, and at the same time, the pushing device pushes the next stainless steel nut into the clamping device, which has a high degree of automation.

Description

Technical Field

[0001] The invention relates to the technical field of nut tapping, and in particular to a stainless steel nut continuous tapping device. Background Art

[0002] Stainless steel nuts are a commonly used connection element, usually used in conjunction with bolts to fix and connect. Stainless steel nuts are made of stainless steel material, so they are corrosion-resistant and suitable for use in humid and corrosive environments. Stainless steel has a bright surface and beautiful appearance, and is suitable for occasions with high appearance requirements, such as decoration, furniture and other fields. Stainless steel is a recyclable material that meets environmental protection requirements, so stainless steel nuts are also sustainable. During the processing of stainless steel nuts, tapping is required to process the internal thread of the nut. Nut tapping in the prior art is mainly performed by a tapping machine, which requires the nut to be continuously inserted and requires manual operation. It is impossible to achieve continuous and uninterrupted nut tapping operations, and the degree of automation is low. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a continuous tapping device for stainless steel nuts, including a main device, the main device including a base, the main device is used to tap the stainless steel nuts, the main device is provided with a pushing device and a clamping device, the pushing device includes a feed rack, the feed rack is fixedly installed on the base, the pushing device is used to feed the stainless steel nuts to be tapped, the clamping device includes a clamping motor, the clamping motor is fixedly installed on the base, and the clamping device is used to clamp the stainless steel nuts to be tapped.

[0004] Furthermore, the main device comprises a sliding guide plate and a reversing cylinder fixedly mounted on a base, a bidirectional screw rod is fixedly mounted on the base, and a tapping mechanism is arranged on the sliding guide plate.

[0005] Furthermore, the tapping mechanism includes a moving box slidably mounted on the sliding guide plate, a feed plate fixedly mounted on the moving box, an internal threaded sleeve rotatably mounted on the feed plate, the internal threaded sleeve and the bidirectional screw rod form a threaded transmission, a lower gear fixedly mounted on the internal threaded sleeve, a tapping motor fixedly mounted on the moving box, a main rotating rod rotatably mounted on the moving box, an upper gear fixedly mounted on the main rotating rod, the upper gear meshes with the lower gear, a tapping seat fixedly mounted on the main rotating rod, a tapping cutter fixedly mounted on the tapping seat, and a switching mechanism is provided on the moving box.

[0006] Furthermore, the switching mechanism includes an upper spring seat rotatably mounted on the moving box, a lower spring seat is slidably mounted on the upper spring seat, a clamping spring is arranged between the upper spring seat and the lower spring seat, a rotating sleeve is rotatably mounted on the lower spring seat, a front friction disc is slidably mounted on the main rotating rod, a rear friction disc is fixedly mounted on the front friction disc, the rear friction disc is slidably mounted on the main rotating rod, the rotating sleeve is rotatably mounted on the rear friction disc, a rear bevel gear and a front bevel gear are rotatably mounted on the main rotating rod, a connecting rod is fixedly mounted on the rotating sleeve, a sliding column is fixedly mounted on the connecting rod, the sliding column slides in the reversing cylinder, a motor bevel gear is fixedly mounted on the motor shaft of the tapping motor, the motor bevel gear is meshed with the rear bevel gear, and the motor bevel gear is meshed with the front bevel gear.

[0007] When the nut to be tapped is clamped and fixed, the tapping motor rotates to drive the motor bevel gear to rotate, thereby driving the rear bevel gear and the front bevel gear to rotate, and the rear bevel gear and the front bevel gear rotate in opposite directions. In the initial state, the clamping spring presses the front friction disc against the front bevel gear, and the rotation of the front bevel gear drives the front friction disc to rotate through friction. At this time, the rear bevel gear rotates toward the main rotating rod, so that the front friction disc drives the main rotating rod and the tapping seat to rotate, thereby driving the tapping cutter to rotate. At the same time, the rotation of the main rotating rod will drive the upper gear to rotate, thereby driving the lower gear to rotate, thereby driving the internal thread sleeve to rotate. Under the action of the bidirectional screw, the internal thread sleeve and the moving box are driven to move in the direction of the nut to be tapped, so that the nut to be tapped is tapped by the rotation and advancement of the tapping cutter.

[0008] The sliding column moves forward along the reversing cylinder under the action of the connecting rod and the rotating sleeve. When the tapping is completed, the sliding column moves to the farthest end of the reversing cylinder, and the internal thread sleeve has not reached the farthest end of the two-way screw rod. As the internal thread sleeve continues to rotate, since the sliding column can no longer move forward, the rear friction plate and the front friction plate will slide along the main rotating rod, and the lower spring seat and the upper spring seat will rotate. In conjunction with the relative sliding of the lower spring seat and the upper spring seat, the rear friction plate is pressed against the rear bevel gear through the clamping spring, while the front friction plate is disengaged from the front bevel gear. At this time, the internal thread sleeve just moves to the farthest end of the two-way screw rod. Since the two-way screw rod is provided with a two-way screw At this time, the internal thread sleeve starts to move back along the bidirectional screw rod, that is, it moves in the direction away from the nut to be tapped. At the same time, the rear bevel gear drives the rear friction plate to rotate through friction force, and the rear bevel gear rotates in the opposite direction to the front bevel gear, thereby driving the main rotating rod and the tapping cutter to retreat in the opposite direction to the feed direction, thereby spirally leaving the nut to be tapped and resetting it, so that the tapping cutter can spirally tap the nut to be tapped while the tapping motor rotates in the same direction, and after tapping is completed, the tapping cutter spirally exits the nut to be tapped in the opposite direction.

[0009] Furthermore, the pushing device includes a side bevel gear and a short connecting rod fixedly mounted on the motor shaft of the side motor, a pushing block is slidably mounted on the feed rack, a long connecting rod is rotatably mounted on the short connecting rod, the long connecting rod and the pushing block are rotatably mounted, and a nut box is fixedly mounted on the feed rack, in which nuts to be tapped are stacked.

[0010] The rotation of the side motor drives the side bevel gear and the short connecting rod to rotate, thereby driving the long connecting rod to rotate, thereby driving the push block to slide back and forth along the feed rack, and the nut to be tapped at the bottom of the nut box is continuously pushed out between the nut clamping blocks through the push block.

[0011] Furthermore, the clamping device includes a partially toothed gear fixedly mounted on the motor shaft of the clamping motor, a spur bevel gear rotatably mounted on the base, a toothless gear fixedly mounted on the spur bevel gear, the spur bevel gear meshes with the side bevel gear, a fixed cylinder fixedly mounted on the base, a rack rack slidably mounted on the fixed cylinder, the rack rack meshes with the toothless gear and the partially toothed gear, and an opening and closing mechanism is provided on the fixed cylinder.

[0012] Furthermore, the opening and closing mechanism includes an inclined hole turntable rotatably mounted on a fixed cylinder, a turntable gear is fixedly mounted on the inclined hole turntable, a lower clamping seat is rotatably mounted on a rack frame, an upper clamping seat is slidably mounted on the lower clamping seat, a clamping spring is arranged between the lower clamping seat and the upper clamping seat, the turntable gear is meshed with the rack frame, a straight hole turntable is fixedly mounted on the fixed cylinder, a plurality of long grooves are arranged on the straight hole turntable, a plurality of oblique grooves are arranged on the inclined hole turntable, a plurality of nut blocks are slidably mounted in the long grooves of the straight hole turntable, and the nut blocks are slidably mounted with the oblique grooves on the inclined hole turntable.

[0013] Furthermore, the nut blocks are provided with grooves for enhancing friction, and each nut block is slidable.

[0014] The clamping motor drives the partial tooth gear to rotate. When the teeth of the partial tooth gear begin to mesh with the rack frame, the rack frame is driven to slide to the right, thereby driving the turntable gear to rotate counterclockwise, thereby driving the inclined hole turntable to rotate, thereby driving the nut clamping block to slide along the inclined groove of the inclined hole turntable and the long groove of the straight hole turntable, thereby clamping the nut to be tapped pushed by the push block through the nut clamping block, and the rack frame slides to the right while driving the lower clamping seat to rotate, thereby driving the lower clamping seat to slide relative to the upper clamping seat, and at the same time cooperates with the rotation of the lower clamping seat and the upper clamping seat, so that the lower clamping seat and the upper clamping seat are in a vertical state, so that the clamping spring fixes the position of the turntable gear, thereby stabilizing the position of the inclined hole turntable and the nut clamping block, and the nut to be tapped is tapped by the tapping tool.

[0015] The rotation of the side bevel gear simultaneously drives the toothless gear and the toothless gear to rotate counterclockwise, thereby driving the intermittent rack to slide to the left, thereby driving the turntable gear to rotate clockwise, causing the nut clamping block to slide outward along the long groove of the straight hole turntable, so that the nut clamping block releases the clamping of the nut to be tapped, and at this time the nut to be tapped has been tapped by the tapping knife, and at the same time the lower clamping seat is driven to move to the left by the rack rack, and the lower clamping seat and the upper clamping seat are released from the vertical state, and at this time the push block pushes the next nut to be tapped between the nut clamping blocks, and pushes out the nut to be tapped that has been tapped.

[0016] That is, when the partially toothed gear is meshed with the rack frame, the toothless gear is not meshed with the rack frame. When the partially toothed gear is disengaged from the rack frame, the nut clamping block will hold the nut to be tapped, and the tapping cutter will tap the nut to be tapped, and the push block will slide outward at this time. After the processing is completed, the toothless gear just meshes with the rack frame, driving the nut clamping block to loosen the nut to be tapped, the tapping cutter has left the nut to be tapped, and the push block will push the next nut to be tapped onto the nut clamping block, and push out the processed nut to be tapped.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The tapping mechanism provided in the present invention cooperates with the clamping device to realize continuous tapping of stainless steel nuts, and during the retraction process of the tapping mechanism, the switching mechanism switches the direction of the tapping cutter, so that the tapping cutter withdraws along the internal thread of the stainless steel nut, thereby preventing damage to the internal thread and removing excess burrs in the internal thread, and the degree of automation is high; (2) The pushing device and the clamping device provided in the present invention cooperate to realize continuous automatic feeding of stainless steel nuts, and the stainless steel nuts that have been fed are clamped by the clamping device. When the stainless steel nuts are processed, the clamping device automatically releases the clamping of the stainless steel nuts, and at the same time the pushing device pushes the next stainless steel nut into the clamping device, and the degree of automation is high; (3) The switching mechanism provided in the present invention stabilizes the positions of the front friction disc and the rear friction disc through a clamping spring, so that the entire tapping process is carried out stably with high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 The main device structure of the present invention is shown in FIG. Figure 1 .

[0020] Figure 3 The main device structure of the present invention is shown in FIG. Figure 2 .

[0021] Figure 4 The structure of the tapping mechanism of the present invention is shown in FIG. Figure 1 .

[0022] Figure 5The structure of the tapping mechanism of the present invention is shown in FIG. Figure 2 .

[0023] Figure 6 The switching mechanism structure of the present invention is shown in FIG. Figure 1 .

[0024] Figure 7 The switching mechanism structure of the present invention is schematically shown in FIG. Figure 2 .

[0025] Figure 8 The switching mechanism structure of the present invention is shown in FIG. Figure 3 .

[0026] Fig. 9 The switching mechanism structure of the present invention is shown in FIG. Figure 4 .

[0027] Fig.10 The pusher mechanism of the present invention is shown in FIG. Figure 1 .

[0028] Fig.11 The pusher mechanism of the present invention is shown in FIG. Figure 2 .

[0029] Fig.12 The pusher mechanism of the present invention is shown in FIG. Figure 3 .

[0030] Fig.13 The structure of the clamping device of the present invention is shown in FIG. Figure 1 .

[0031] Fig.14 The structure of the clamping device of the present invention is shown in FIG. Figure 2 .

[0032] Fig.15 The opening and closing mechanism structure of the present invention is schematically shown in FIG. Figure 1 .

[0033] Fig.16 The structure of the opening and closing mechanism of the present invention is shown in FIG. Figure 2 .

[0034] Fig.17 The structure of the opening and closing mechanism of the present invention is shown in FIG. Figure 3 .

[0035] Figure numerals: 101-base; 102-sliding guide plate; 103-reversing cylinder; 104-bidirectional screw rod; 105-moving box; 106-tapping tool; 107-feed plate; 108-sliding column; 109-lower gear; 110-tapping motor; 111-connecting rod; 112-main rotating rod; 113-upper gear; 114-rear bevel gear; 115-rotating sleeve; 116-rear friction plate; 117-front friction plate; 118-front bevel gear; 119-tapping seat; 120-lower spring seat; 121-card spring; 122-upper spring seat; 123-motor Bevel gear; 124-internal thread sleeve; 201-feeding rack; 202-push block; 203-nut box; 204-side motor; 205-side bevel gear; 206-short connecting rod; 207-long connecting rod; 208-nut to be tapped; 301-clamping motor; 302-partial tooth gear; 303-fixing cylinder; 304-positive bevel gear; 305-toothless gear; 306-rack rack; 307-lower clamping seat; 308-clamping spring; 309-upper clamping seat; 310-oblique hole turntable; 311-turntable gear; 312-straight hole turntable; 313-nut clamping block. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] Example: Reference Figure 1-Figure 17 A continuous tapping device for stainless steel nuts includes a main device, which includes a base 101. The main device is used to tap the stainless steel nuts. The main device is provided with a pushing device and a clamping device. The pushing device includes a feed rack 201, which is fixedly mounted on the base 101. The pushing device is used to feed the stainless steel nuts to be tapped. The clamping device includes a clamping motor 301, which is fixedly mounted on the base 101. The clamping device is used to clamp the stainless steel nuts to be tapped.

[0038] like Figure 1-Figure 9 As shown, the main device includes a sliding guide plate 102 and a reversing cylinder 103 fixedly mounted on a base 101 , a bidirectional screw rod 104 is fixedly mounted on the base 101 , and a tapping mechanism is provided on the sliding guide plate 102 .

[0039] like Figure 2-Figure 9As shown, the tapping mechanism includes a moving box 105 slidably mounted on the sliding guide plate 102, a feed plate 107 is fixedly mounted on the moving box 105, an internal threaded sleeve 124 is rotatably mounted on the feed plate 107, the internal threaded sleeve 124 and the bidirectional screw rod 104 form a threaded transmission, a lower gear 109 is fixedly mounted on the internal threaded sleeve 124, a tapping motor 110 is fixedly mounted on the moving box 105, a main rotating rod 112 is rotatably mounted on the moving box 105, an upper gear 113 is fixedly mounted on the main rotating rod 112, the upper gear 113 is meshed with the lower gear 109, a tapping seat 119 is fixedly mounted on the main rotating rod 112, a tapping cutter 106 is fixedly mounted on the tapping seat 119, and a switching mechanism is provided on the moving box 105.

[0040] like Figure 2-Figure 9 As shown, the switching mechanism includes an upper spring seat 122 rotatably mounted on the moving box 105, a lower spring seat 120 is slidably mounted on the upper spring seat 122, a clamping spring 121 is provided between the upper spring seat 122 and the lower spring seat 120, a rotating sleeve 115 is rotatably mounted on the lower spring seat 120, a front friction disc 117 is slidably mounted on the main rotating rod 112, a rear friction disc 116 is fixedly mounted on the front friction disc 117, the rear friction disc 116 is slidably mounted on the main rotating rod 112, and the rotating sleeve 115 is rotatably installed with the rear friction plate 116, the rear bevel gear 114 and the front bevel gear 118 are rotatably installed on the main rotating rod 112, the connecting rod 111 is fixedly installed on the rotating sleeve 115, the sliding column 108 is fixedly installed on the connecting rod 111, the sliding column 108 slides in the reversing cylinder 103, and the motor bevel gear 123 is fixedly installed on the motor shaft of the tapping motor 110, the motor bevel gear 123 is meshed with the rear bevel gear 114, and the motor bevel gear 123 is meshed with the front bevel gear 118.

[0041] When the nut 208 to be tapped is clamped and fixed, the tapping motor 110 rotates to drive the motor bevel gear 123 to rotate, thereby driving the rear bevel gear 114 and the front bevel gear 118 to rotate, and the rear bevel gear 114 and the front bevel gear 118 rotate in opposite directions. In the initial state, the clamping spring 121 presses the front friction plate 117 against the front bevel gear 118, and the rotation of the front bevel gear 118 drives the front friction plate 117 to rotate through friction force. At this time, the rear bevel gear 114 rotates toward the main rotating rod 112, so that the front friction plate 117 drives the main rotating rod 112 and the tapping seat 119 to rotate, thereby driving the tapping cutter 106 to rotate. At the same time, the rotation of the main rotating rod 112 will drive the upper gear 113 to rotate, thereby driving the lower gear 109 to rotate, thereby driving the internal threaded sleeve 124 to rotate, and under the action of the bidirectional screw rod 104, the internal threaded sleeve 124 and the moving box 105 are driven to move in the direction of the nut 208 to be tapped, so that the nut 208 to be tapped is tapped by the rotation and advancement of the tapping cutter 106.

[0042] Under the action of connecting rod 111 and rotating sleeve 115, sliding column 108 moves forward along reversing cylinder 103. When tapping is completed, sliding column 108 moves to the farthest end of reversing cylinder 103, and internal threaded sleeve 124 has not reached the farthest end of bidirectional screw rod 104. As internal threaded sleeve 124 continues to rotate, since sliding column 108 can no longer move forward, rear friction plate 116 and front friction plate 117 will slide along main rotating rod 112, lower spring seat 120 and upper spring seat 122 rotate, and cooperate with the relative sliding of lower spring seat 120 and upper spring seat 122, rear friction plate 116 is pressed against rear bevel gear 114 through retaining spring 121, and front friction plate 117 is disengaged from front bevel gear 118. At this time, internal threaded sleeve 124 just moves to the farthest end of bidirectional screw rod 104. The screw rod 104 is provided with a bidirectional thread. Since the tapping motor 110 does not change the direction, the internal threaded sleeve 124 starts to move back along the bidirectional screw rod 104, that is, it moves in the direction away from the nut 208 to be tapped. At the same time, the rear bevel gear 114 drives the rear friction plate 116 to rotate through friction force, and the rear bevel gear 114 rotates in the opposite direction to the front bevel gear 118, thereby driving the main rotating rod 112 and the tapping tool 106 to retreat in the opposite direction to the feed direction, thereby spirally removing the tapping tool 106 from the nut 208 to be tapped and resetting it, so that the tapping tool 106 can spirally tap the nut 208 to be tapped while the tapping motor 110 rotates in the same direction, and after the tapping is completed, the tapping tool 106 spirally withdraws from the nut 208 to be tapped in the opposite direction.

[0043] like Figure 10-12 As shown, the pushing device includes a side bevel gear 205 and a short connecting rod 206 fixedly mounted on the motor shaft of the side motor 204, a pushing block 202 is slidably mounted on the feed rack 201, a long connecting rod 207 is rotatably mounted on the short connecting rod 206, the long connecting rod 207 is rotatably mounted with the pushing block 202, a nut box 203 is fixedly mounted on the feed rack 201, and nuts 208 to be tapped are stacked in the nut box 203.

[0044] The rotation of the side motor 204 drives the side bevel gear 205 and the short connecting rod 206 to rotate, thereby driving the long connecting rod 207 to rotate, thereby driving the push block 202 to slide back and forth along the feed rack 201, and the push block 202 continuously pushes the nut 208 to be tapped at the bottom of the nut box 203 to between the nut clamping blocks 313.

[0045] like Figure 13-Figure 17As shown, the clamping device includes a partially toothed gear 302 fixedly mounted on the motor shaft of the clamping motor 301, a spur bevel gear 304 is rotatably mounted on the base 101, a toothless gear 305 is fixedly mounted on the spur bevel gear 304, the spur bevel gear 304 is meshed with the side bevel gear 205, a fixed cylinder 303 is fixedly mounted on the base 101, a rack rack 306 is slidably mounted on the fixed cylinder 303, the rack rack 306 is meshed with the toothless gear 305 and the partially toothed gear 302, and an opening and closing mechanism is provided on the fixed cylinder 303.

[0046] like Figure 13-Figure 17 As shown, the opening and closing mechanism includes an inclined hole turntable 310 rotatably mounted on the fixed cylinder 303, a turntable gear 311 is fixedly mounted on the inclined hole turntable 310, a lower clamping seat 307 is rotatably mounted on the rack frame 306, an upper clamping seat 309 is slidably mounted on the lower clamping seat 307, a clamping spring 308 is arranged between the lower clamping seat 307 and the upper clamping seat 309, the turntable gear 311 is meshed with the rack frame 306, a straight hole turntable 312 is fixedly mounted on the fixed cylinder 303, a plurality of long grooves are arranged on the straight hole turntable 312, a plurality of oblique grooves are arranged on the inclined hole turntable 310, a plurality of nut blocks 313 are slidably mounted in the long grooves of the straight hole turntable 312, and the nut blocks 313 are slidably mounted with the oblique grooves on the inclined hole turntable 310.

[0047] like Figure 13-Figure 17 As shown, the nut blocks 313 are provided with grooves for enhancing friction, and each of the nut blocks 313 can slide between each other.

[0048] The clamping motor 301 drives the partial tooth gear 302 to rotate. When the teeth of the partial tooth gear 302 begin to mesh with the rack frame 306, the rack frame 306 is driven to slide to the right, thereby driving the turntable gear 311 to rotate counterclockwise, thereby driving the inclined hole turntable 310 to rotate, thereby driving the nut clamping block 313 to slide along the inclined groove of the inclined hole turntable 310 and the long groove of the straight hole turntable 312, so that the nut 208 to be tapped pushed by the push block 202 is clamped by the nut clamping block 313. The rack frame 306 slides to the right while driving the lower clamping seat 307 to rotate, thereby driving the lower clamping seat 307 to slide relative to the upper clamping seat 309, and at the same time cooperates with the rotation of the lower clamping seat 307 and the upper clamping seat 309, so that the lower clamping seat 307 and the upper clamping seat 309 are in a vertical state, so that the clamping spring 308 fixes the position of the turntable gear 311, thereby stabilizing the position of the inclined hole turntable 310 and the nut block 313, and the tapping process is performed on the nut 208 to be tapped by the tapping tool 106.

[0049] The rotation of the side bevel gear 205 simultaneously drives the toothed gear 305 and the toothed gear 305 to rotate counterclockwise, thereby driving the intermittent rack rack 306 to slide leftward, thereby driving the turntable gear 311 to rotate clockwise, so that the nut block 313 slides outward along the long groove of the straight hole turntable 312, so that the nut block 313 releases the clamping of the nut 208 to be tapped, and at this time the nut 208 to be tapped has been tapped by the tapping knife 106, and at the same time the lower clamping seat 307 is driven by the rack rack 306 to move to the left, and the lower clamping seat 307 and the upper clamping seat 309 are released from the vertical state, and at this time the push block 202 pushes the next nut 208 to be tapped between the nut blocks 313, and pushes out the nut 208 to be tapped that has been tapped.

[0050] That is, when the partially toothed gear 302 is meshed with the rack frame 306, the toothless gear 305 is not meshed with the rack frame 306. When the partially toothed gear 302 is disengaged from the rack frame 306, the nut clamping block 313 keeps clamping the nut 208 to be tapped, and the tapping tool 106 performs tapping processing on the nut 208 to be tapped, and at this time, the push block 202 slides outward. After the processing is completed, the toothless gear 305 is just meshed with the rack frame 306, driving the nut clamping block 313 to loosen the nut 208 to be tapped, the tapping tool 106 has left the nut 208 to be tapped, and the push block 202 pushes the next nut 208 to be tapped onto the nut clamping block 313, and pushes out the processed nut 208 to be tapped.

[0051] The working principle of the stainless steel nut continuous tapping device disclosed in the present invention is as follows: the clamping motor 301 drives the partial tooth gear 302 to rotate, and when the teeth of the partial tooth gear 302 begin to mesh with the rack frame 306, the rack frame 306 is driven to slide to the right, thereby driving the turntable gear 311 to rotate counterclockwise, thereby driving the inclined hole turntable 310 to rotate, thereby driving the nut clamping block 313 to slide along the inclined groove of the inclined hole turntable 310 and the long groove of the straight hole turntable 312, thereby pushing the push block 202 through the nut clamping block 313. The nut 208 to be tapped is clamped, and the rack frame 306 slides to the right while driving the lower clamping seat 307 to rotate, thereby driving the lower clamping seat 307 to slide relative to the upper clamping seat 309, and at the same time cooperates with the rotation of the lower clamping seat 307 and the upper clamping seat 309, so that the lower clamping seat 307 and the upper clamping seat 309 are in a vertical state, so that the clamping spring 308 fixes the position of the turntable gear 311, thereby stabilizing the position of the inclined hole turntable 310 and the nut block 313, and the nut 208 to be tapped is tapped by the tapping tool 106. When the nut 208 to be tapped is clamped and fixed, the tapping motor 110 rotates to drive the motor bevel gear 123 to rotate, thereby driving the rear bevel gear 114 and the front bevel gear 118 to rotate, and the rear bevel gear 114 and the front bevel gear 118 rotate in opposite directions. In the initial state, the clamping spring 121 presses the front friction plate 117 against the front bevel gear 118, and the rotation of the front bevel gear 118 drives the front friction plate 117 to rotate through friction force. At this time, the rear bevel gear 114 rotates toward the main rotating rod 112, so that the front friction plate 117 drives the main rotating rod 112 and the tapping seat 119 to rotate, thereby driving the tapping cutter 106 to rotate. At the same time, the rotation of the main rotating rod 112 will drive the upper gear 113 to rotate, thereby driving the lower gear 109 to rotate, thereby driving the internal threaded sleeve 124 to rotate, and under the action of the bidirectional screw rod 104, the internal threaded sleeve 124 and the moving box 105 are driven to move in the direction of the nut 208 to be tapped, so that the nut 208 to be tapped is tapped by the rotation and advancement of the tapping cutter 106.Under the action of connecting rod 111 and rotating sleeve 115, sliding column 108 moves forward along reversing cylinder 103. When tapping is completed, sliding column 108 moves to the farthest end of reversing cylinder 103, and internal threaded sleeve 124 has not reached the farthest end of bidirectional screw rod 104. As internal threaded sleeve 124 continues to rotate, since sliding column 108 can no longer move forward, rear friction plate 116 and front friction plate 117 will slide along main rotating rod 112, lower spring seat 120 and upper spring seat 122 rotate, and cooperate with the relative sliding of lower spring seat 120 and upper spring seat 122, rear friction plate 116 is pressed against rear bevel gear 114 through retaining spring 121, and front friction plate 117 is disengaged from front bevel gear 118. At this time, internal threaded sleeve 124 just moves to the farthest end of bidirectional screw rod 104. The screw rod 104 is provided with a bidirectional thread. Since the tapping motor 110 does not change the direction, the internal threaded sleeve 124 starts to move back along the bidirectional screw rod 104, that is, it moves in the direction away from the nut 208 to be tapped. At the same time, the rear bevel gear 114 drives the rear friction plate 116 to rotate through friction force, and the rear bevel gear 114 rotates in the opposite direction to the front bevel gear 118, thereby driving the main rotating rod 112 and the tapping tool 106 to retreat in the opposite direction to the feed direction, thereby spirally removing the tapping tool 106 from the nut 208 to be tapped and resetting it, so that the tapping tool 106 can spirally tap the nut 208 to be tapped while the tapping motor 110 rotates in the same direction, and after the tapping is completed, the tapping tool 106 spirally withdraws from the nut 208 to be tapped in the opposite direction. The rotation of the side bevel gear 205 simultaneously drives the toothed gear 305 and the toothed gear 305 to rotate counterclockwise, thereby driving the intermittent rack rack 306 to slide leftward, thereby driving the turntable gear 311 to rotate clockwise, so that the nut block 313 slides outward along the long groove of the straight hole turntable 312, so that the nut block 313 releases the clamping of the nut 208 to be tapped, and at this time the nut 208 to be tapped has been tapped by the tapping knife 106, and at the same time the lower clamping seat 307 is driven by the rack rack 306 to move to the left, and the lower clamping seat 307 and the upper clamping seat 309 are released from the vertical state, and at this time the push block 202 pushes the next nut 208 to be tapped between the nut blocks 313, and pushes out the nut 208 to be tapped that has been tapped.

[0052] That is, when the partially toothed gear 302 is meshed with the rack frame 306, the toothless gear 305 is not meshed with the rack frame 306. When the partially toothed gear 302 is disengaged from the rack frame 306, the nut clamping block 313 keeps clamping the nut 208 to be tapped, and the tapping tool 106 performs tapping processing on the nut 208 to be tapped, and at this time, the push block 202 slides outward. After the processing is completed, the toothless gear 305 is just meshed with the rack frame 306, driving the nut clamping block 313 to loosen the nut 208 to be tapped, the tapping tool 106 has left the nut 208 to be tapped, and the push block 202 pushes the next nut 208 to be tapped onto the nut clamping block 313, and pushes out the processed nut 208 to be tapped.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stainless steel nut continuous tapping device, comprising a main device, characterized in that: The main device comprises a base (101), the main device is used for tapping stainless steel nuts, a pushing device and a clamping device are arranged on the main device, the pushing device comprises a feeding rack (201), the feeding rack (201) is fixedly mounted on the base (101), the pushing device is used for feeding the stainless steel nuts to be tapped, the clamping device comprises a clamping motor (301), the clamping motor (301) is fixedly mounted on the base (101), and the clamping device is used for clamping the stainless steel nuts to be tapped; The main device comprises a sliding guide plate (102) and a reversing cylinder (103) fixedly mounted on a base (101); a bidirectional screw rod (104) is fixedly mounted on the base (101); and a tapping mechanism is provided on the sliding guide plate (102); The tapping mechanism comprises a moving box (105) slidably mounted on the sliding guide plate (102), a feed plate (107) fixedly mounted on the moving box (105), an internal thread sleeve (124) rotatably mounted on the feed plate (107), the internal thread sleeve (124) and the bidirectional screw rod (104) forming a threaded transmission, a lower gear (109) fixedly mounted on the internal thread sleeve (124), a tapping motor (110) fixedly mounted on the moving box (105), a main rotating rod (112) rotatably mounted on the moving box (105), an upper gear (113) fixedly mounted on the main rotating rod (112), the upper gear (113) meshing with the lower gear (109), a tapping seat (119) fixedly mounted on the main rotating rod (112), a tapping cutter (106) fixedly mounted on the tapping seat (119), and a switching mechanism is provided on the moving box (105); The switching mechanism comprises an upper spring seat (122) rotatably mounted on the moving box (105), a lower spring seat (120) being slidably mounted on the upper spring seat (122), a clamping spring (121) being provided between the upper spring seat (122) and the lower spring seat (120), a rotating sleeve (115) being rotatably mounted on the lower spring seat (120), a front friction disc (117) being slidably mounted on the main rotating rod (112), a rear friction disc (116) being fixedly mounted on the front friction disc (117), the rear friction disc (116) being slidably mounted on the main rotating rod (112), and the rotating sleeve (115) being rotatably mounted on the lower spring seat (120). 15) is rotatably mounted with the rear friction disc (116), a rear bevel gear (114) and a front bevel gear (118) are rotatably mounted on the main rotating rod (112), a connecting rod (111) is fixedly mounted on the rotating sleeve (115), a sliding column (108) is fixedly mounted on the connecting rod (111), the sliding column (108) slides in the reversing cylinder (103), a motor bevel gear (123) is fixedly mounted on the motor shaft of the tapping motor (110), the motor bevel gear (123) is meshed with the rear bevel gear (114), and the motor bevel gear (123) is meshed with the front bevel gear (118); The pushing device comprises a side bevel gear (205) and a short connecting rod (206) fixedly mounted on the motor shaft of the side motor (204); a pushing block (202) is slidably mounted on the feed frame (201); a long connecting rod (207) is rotatably mounted on the short connecting rod (206); the long connecting rod (207) and the pushing block (202) are rotatably mounted; a nut box (203) is fixedly mounted on the feed frame (201); nuts (208) to be tapped are stacked in the nut box (203); The clamping device comprises a partially toothed gear (302) fixedly mounted on the motor shaft of the clamping motor (301); a spur bevel gear (304) rotatably mounted on the base (101); a toothless gear (305) fixedly mounted on the spur bevel gear (304); the spur bevel gear (304) meshes with the side bevel gear (205); a fixed cylinder (303) fixedly mounted on the base (101); a rack rack (306) slidably mounted on the fixed cylinder (303); the rack rack (306) meshes with the toothless gear (305) and the partially toothed gear (302); and an opening and closing mechanism is provided on the fixed cylinder (303); The opening and closing mechanism comprises an inclined hole rotating disk (310) rotatably mounted on a fixed cylinder (303), a rotating disk gear (311) fixedly mounted on the inclined hole rotating disk (310), a lower clamping seat (307) rotatably mounted on a rack frame (306), an upper clamping seat (309) slidably mounted on the lower clamping seat (307), a clamping spring (308) is arranged between the lower clamping seat (307) and the upper clamping seat (309), the rotating disk gear (311) meshes with the rack frame (306), a straight hole rotating disk (312) is fixedly mounted on the fixed cylinder (303), a plurality of long grooves are arranged on the straight hole rotating disk (312), a plurality of inclined grooves are arranged on the inclined hole rotating disk (310), a plurality of nut clamping blocks (313) are slidably mounted in the long grooves of the straight hole rotating disk (312), and the nut clamping blocks (313) are slidably mounted on the inclined grooves on the inclined hole rotating disk (310).

2. A stainless steel nut continuous tapping device according to claim 1, characterized in that: The nut clamping blocks (313) are provided with grooves for enhancing friction, and each of the nut clamping blocks (313) is slidable.

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