A monitoring device for nut riveting process

Abstract

This invention provides a monitoring device for the nut riveting process, relating to the field of auto parts processing, including a connecting structure; overlapping mechanisms are fixedly connected to both sides of the connecting structure, and the connecting structure is movably connected to a driving structure through the overlapping mechanisms. A control structure is also movably connected inside the overlapping mechanisms. A rotating mechanism and an adjusting structure are movably connected inside the connecting structure, and the rotating mechanism is also movably connected to the driving structure. A detection mechanism and a limiting mechanism are movably connected to the top of the connecting structure, and the limiting mechanism is also movably connected to the detection mechanism. The rotating mechanism includes a rotating ring, a detector, and an insertion slot B. A detector is fixedly connected to one side of the rotating ring, and an insertion slot B is also provided on the inner side of the rotating ring. Through the detector and sensor, the number of rotations of the connecting ring and the rotating ring can be effectively counted, and the effect of nut installation can be detected, which can effectively ensure the quality of nut installation.

Description

Technical Field

[0001] This invention relates to the field of auto parts processing, specifically to a monitoring device for the nut riveting process. Background Technology

[0002] Rivet nuts, also known as pull nuts or rivet caps, are used in the fastening of various metal sheets and pipes in the manufacturing industry. They are widely used in the assembly of electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, and decoration. Developed to address the shortcomings of welding nuts on thin metal sheets and pipes, such as easy melting, easy deformation of the base material during welding, and easy stripping of internal threads, rivets eliminate the need for tapping internal threads and welding nuts, providing strong and efficient riveting and ease of use.

[0003] For example, patent application number N201610950597.5 discloses an automatic riveting pressure monitoring device, including a machine base, a control screen, an electrical control box, a nut feeding device, a nut cap feeding device, a riveting mechanism, and a discharge cylinder. The control screen, electrical control box, nut feeding device, nut cap feeding device, riveting mechanism, and discharge cylinder are assembled and connected to the machine base. The nut feeding device, nut cap feeding device, control screen, riveting mechanism, and discharge cylinder are electrically connected to the electrical control box. The riveting mechanism includes a riveting bracket, a pressure cylinder, a riveting head, and a magnet. The riveting head and pressure cylinder are connected, and the riveting head is driven by the pressure cylinder to perform up-and-down reciprocating motion. The riveting head is a hollow body, and the shape of the inner edge of the riveting head matches the shape of the outer edge of the nut cap. The magnet is connected to the riveting head. The machine base has a nut placement platform corresponding to the position of the riveting head. This invention automates production, replaces manual production, ensures high quality and performance, achieves safe production, and improves the company's market competitiveness.

[0004] Based on existing technology, it has been found that most automotive rivet nuts can be installed with mechanical assistance. However, after installation, it is not possible to effectively detect the number of rotations of the rivet nuts, resulting in inconsistent installation specifications between nuts. At the same time, it is also convenient to inspect the workpiece while the rivet nuts are being installed, which can easily lead to the nuts becoming loose later. Summary of the Invention

[0005] To solve the above problems, the present invention provides the following technical solution: a nut riveting process monitoring device, comprising a connecting structure; overlapping mechanisms are fixedly connected to both sides of the connecting structure, the connecting structure is movably connected to a driving structure through the overlapping mechanisms, a control structure is movably connected inside the overlapping mechanisms, a rotating mechanism and an adjusting structure are movably connected inside the connecting structure, the rotating mechanism is movably connected to the driving structure, a detection mechanism and a limiting mechanism are movably connected to the top of the connecting structure, the limiting mechanism is movably connected to the detection mechanism, the rotating mechanism includes: a rotating ring, a detector, and an insertion slot B, a detector is fixedly connected to one side of the rotating ring, and an insertion slot B is provided on the inner side of the rotating ring.

[0006] Furthermore, the drive structure includes: a storage box, a motor, a drive shaft, a fixing block A, a reserved hole A, a connecting plate, and a connecting groove. The motor is fixedly connected inside the storage box, and the drive shaft is fixedly connected to one end of the motor. Fixing blocks A are fixedly connected to both sides of the storage box, and the reserved hole A is provided in the fixing block A. Two sets of connecting plates are fixedly connected to one end of the storage box, and the connecting plates are provided with connecting grooves inside.

[0007] Furthermore, the connection structure includes: a connecting box, a fixing rod, a clamping plate, and a threaded groove. The fixing rod is fixedly connected inside the connecting box. The clamping plate is arranged in two sets, and the two ends of the clamping plate are slidably connected to the fixing rod. Threaded grooves are provided on both sides of the clamping plate, and the clamping plate is respectively attached to both sides of the drive shaft.

[0008] Furthermore, the connection structure also includes: a reserved groove, a sliding groove, a guide rod A, and a hollow groove. The reserved groove is also provided on one side of the connection box, and the top of the connection box is also provided with a sliding groove. The guide rod A is fixedly connected to the connection box through the sliding groove, and the connection box is also provided with a hollow groove.

[0009] Furthermore, the overlapping mechanism includes: a fixed block B, an overlapping block, a through hole, a limiting plate A, a fixed plate, a guide rod B, an elastic element, and a rotating groove. The fixed block B is fixedly connected to both sides of the connecting box. The overlapping block and the limiting plate A are slidably connected inside the fixed block B. The overlapping block and the limiting plate A are respectively provided with through holes. The overlapping block and the limiting plate A are slidably connected to the guide rod B through the through holes. The guide rod B is fixedly connected to both sides of the fixed plate. The fixed plate is fixedly connected inside the fixed block B. An elastic element is movably connected to the guide rod B. The two ends of the elastic element are respectively in contact with the limiting plate A and the fixed plate. The rotating groove is respectively provided inside the fixed block B and the fixed plate.

[0010] Furthermore, the control structure includes: a control shaft A, a knob A, an insert slot A, a gear, and a rack. The control shaft A is rotatably connected to the fixed block B and the fixed plate through a rotating slot. A knob A is fixedly connected to one end of the control shaft A. An insert slot A is also provided inside the knob A. Two sets of gears are fixedly connected to the control shaft A. The two sides of the gears mesh with the rack, and one end of the rack is fixedly connected to the limiting plate A.

[0011] Furthermore, the rotating mechanism includes a connecting ring, which is fixedly connected to one side of the rotating ring. The connecting ring is rotatably connected to the connecting box through a reserved slot, and the rotating ring is movably connected to the drive shaft through the insertion slot B.

[0012] Furthermore, the detection mechanism includes: a sensor and a transmission line. The sensor is fixedly connected to the top of the connection box and is also positioned above the detector. A transmission line is movably connected to one side of the sensor.

[0013] Furthermore, the limiting mechanism includes: a limiting plate B, a slider, a reserved hole B, an adjusting shaft, a bevel gear A, a bevel gear B, a rotating shaft, and a knob B. The bottom of the limiting plate B is fixedly connected to the slider, which also has a reserved hole B. The slider is slidably connected to the guide rod A through the reserved hole B. The adjusting shaft and the rotating shaft are rotatably connected in the connecting box. One end of the adjusting shaft is fixedly connected to the bevel gear A, and the rotating shaft is also fixedly connected to the bevel gear B. The bevel gear A meshes with the bevel gear B. The top of the rotating shaft is also fixedly connected to the knob B. The limiting plate B is also movably connected to the transmission line.

[0014] Furthermore, the adjustment structure includes: a control shaft B, a knob C, a baffle, a turntable, and a transmission belt. The control shaft B is rotatably connected to the connecting box. The knob C is fixedly connected to the top of the control shaft B. The baffles are fixedly connected to the control shaft B in two sets. The turntables are fixedly connected to both ends of the control shaft B. The two ends of the transmission belt are movably connected to the turntables. The control shaft B is movably connected to the clamping plate through a threaded groove.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. This nut riveting process monitoring device can effectively count the number of rotations of the connecting ring and the rotating ring through detectors and sensors, and detect the effect of nut installation. It can effectively ensure the quality of nut installation and prevent the nut from detaching during long-term use of the workpiece after installation. At the same time, the motor and drive shaft can assist in the installation of the nut, and the connecting ring and the rotating ring can rotate smoothly with the drive shaft.

[0017] 2. This nut riveting process monitoring device can also drive the clamping plate to slide inward or outward simultaneously when the control shaft B is rotated. At the same time, the clamping plate can also effectively apply a certain pressure to the drive shaft, which can effectively assist the drive shaft in processing the nut and ensure the pressure applied during nut installation.

[0018] 3. This nut riveting process monitoring device can effectively assemble the connecting box on one side of the storage box through the fixing block B and the overlapping block. The assembly method is relatively simple. When the control shaft A is rotated, the overlapping block can be retracted through the gear and rack. This can effectively disassemble and replace the detection device, and also facilitate the inspection and maintenance of the detection device, thereby reducing the operating cost of the detection device.

[0019] 4. This nut riveting process monitoring device can effectively transmit data to the control terminal through the transmission line set on one side of the sensor. At the same time, the transmission line can also be fixed by the limit plate B to prevent the detection device from shaking after the motor is turned on, which would cause the transmission line to detach from the detector. This can effectively ensure signal transmission and feedback and avoid signal interruption. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0021] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0022] In the attached diagram:

[0023] Figure 1 A top view of the structure according to an embodiment of the present invention is shown;

[0024] Figure 2 A cross-sectional structural schematic diagram according to an embodiment of the present invention is shown;

[0025] Figure 3 A cross-sectional structural schematic diagram of the drive structure according to an embodiment of the present invention is shown;

[0026] Figure 4 A cross-sectional structural schematic diagram of the connection structure according to an embodiment of the present invention is shown;

[0027] Figure 5 A cross-sectional structural schematic diagram of the overlapping mechanism according to an embodiment of the present invention is shown;

[0028] Figure 6 A schematic diagram of the control structure according to an embodiment of the present invention is shown;

[0029] Figure 7A schematic diagram of the rotating mechanism according to an embodiment of the present invention is shown;

[0030] Figure 8 A schematic diagram of the detection mechanism according to an embodiment of the present invention is shown;

[0031] Figure 9 A schematic diagram of the limiting mechanism according to an embodiment of the present invention is shown;

[0032] Figure 10 A schematic diagram of the adjustment structure according to an embodiment of the present invention is shown.

[0033] List of reference numerals in the attached diagram:

[0034] 1. Drive structure; 101. Storage box; 102. Motor; 103. Drive shaft; 104. Fixing block A; 105. Reserved hole A; 106. Connecting plate; 107. Connecting groove; 2. Connecting structure; 201. Connecting box; 202. Fixing rod; 203. Clamping plate; 204. Threaded groove; 205. Reserved groove; 206. Sliding groove; 207. Guide rod A; 208. Hollow groove; 3. Overlapping mechanism; 301. Fixing block B; 302. Overlapping block; 303. Through hole; 304. Limiting plate A; 305. Fixing plate; 306. Guide rod B; 307. Elastic element; 308. Rotating groove; 4. Control structure; 401 1. Control shaft A; 402. Knob A; 403. Insertion slot A; 404. Gear; 405. Rack; 5. Rotating mechanism; 501. Rotating ring; 502. Detector; 503. Insertion slot B; 504. Connecting ring; 6. Detection mechanism; 601. Sensor; 602. Transmission line; 7. Limiting mechanism; 701. Limiting plate B; 702. Slider; 703. Reserved hole B; 704. Adjusting shaft; 705. Bevel gear A; 706. Bevel gear B; 707. Rotating shaft; 708. Knob B; 8. Adjusting structure; 801. Control shaft B; 802. Knob C; 803. Baffle; 804. Turntable; 805. Transmission belt. Detailed Implementation

[0035] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0036] Example 1:

[0037] Please refer to Figures 1 to 10 :

[0038] This invention proposes a monitoring device for the nut riveting process, including a connecting structure 2; two sides of the connecting structure 2 are respectively fixedly connected to overlapping mechanisms 3, and the connecting structure 2 is movably connected to the driving structure 1 through the overlapping mechanisms 3. The overlapping mechanism 3 is also movably connected to the inside of a control structure 4. The connecting structure 2 is also movably connected to a rotating mechanism 5 and an adjusting structure 8, and the rotating mechanism 5 is also movably connected to the driving structure 1. The top of the connecting structure 2 is respectively movably connected to a detection mechanism 6 and a limiting mechanism 7, and the limiting mechanism 7 is also movably connected to the detection mechanism 6. The rotating mechanism 5 includes: a rotating ring 501, a detector 502, and an insertion groove B503. The detector 502 is fixedly connected to one side of the rotating ring 501, and the insertion groove B503 is also provided on the inner side of the rotating ring 501.

[0039] like Figure 7 As shown, the rotating mechanism 5 includes a connecting ring 504, which is fixedly connected to one side of the rotating ring 501. The connecting ring 504 is rotatably connected to the connecting box 201 through a reserved groove 205. The rotating ring 501 is movably connected to the drive shaft 103 through an insertion groove B503. The connecting ring 504 is stepped, which allows the connecting ring 504 to rotate well within the connecting box 201 and effectively prevents the connecting ring 504 from detaching from the connecting box 201.

[0040] like Figure 8 As shown, the detection mechanism 6 includes a sensor 601 and a transmission line 602. The sensor 601 is fixedly connected to the top of the connecting box 201 and is also positioned above the detector 502. The transmission line 602 is movably connected to one side of the sensor 601. An NCDT2300 laser displacement sensor is also included. The detector 502 and the sensor 601 can effectively count the number of rotations of the connecting ring 504 and the rotating ring 501, and detect the effect of nut installation. This can effectively ensure the quality of nut installation and prevent the nut from detaching during long-term use of the workpiece after installation. At the same time, the motor 102 and the drive shaft 103 can assist in the installation of the nut, and the connecting ring 504 and the rotating ring 501 can also rotate smoothly with the drive shaft 103.

[0041] Example 2:

[0042] Based on Example 1, such as Figure 3As shown, the drive structure 1 includes: a storage box 101, a motor 102, a drive shaft 103, a fixing block A104, a reserved hole A105, a connecting plate 106, and a connecting groove 107. The motor 102 is fixedly connected inside the storage box 101, and the drive shaft 103 is fixedly connected to one end of the motor 102. Fixing blocks A104 are fixedly connected to both sides of the storage box 101, and the fixing blocks A104 are also provided with reserved holes A105. Two sets of connecting plates 106 are fixedly connected to one end of the storage box 101, and the connecting plates 106 are also provided with connecting grooves 107 inside. The motor 102 is a servo motor, which can control the speed and has very accurate positioning.

[0043] like Figure 4 As shown, the connecting structure 2 includes: a connecting box 201, a fixing rod 202, a clamping plate 203, and a threaded groove 204. The fixing rod 202 is fixedly connected inside the connecting box 201. The clamping plate 203 is arranged in two sets, and the two ends of the clamping plate 203 are slidably connected to the fixing rod 202 respectively. Threaded grooves 204 are provided on both sides of the clamping plate 203. The clamping plate 203 is respectively attached to both sides of the drive shaft 103. The clamping plate 203 is arc-shaped, and its function is to allow the clamping plate 203 to fit well against both sides of the drive shaft 103 through the arc-shaped clamping plate 203.

[0044] like Figure 4 As shown, the connecting structure 2 further includes: a reserved groove 205, a sliding groove 206, a guide rod A207, and a hollow groove 208. The reserved groove 205 is also provided on one side of the connecting box 201, and the top of the connecting box 201 is also provided with a sliding groove 206. The guide rod A207 is fixedly connected to the connecting box 201 through the sliding groove 206, and the connecting box 201 is also provided with a hollow groove 208.

[0045] like Figure 10As shown, the adjustment structure 8 includes: a control shaft B801, a knob C802, a baffle 803, a turntable 804, and a transmission belt 805. The control shaft B801 is rotatably connected to the connecting box 201. The knob C802 is fixedly connected to the top of the control shaft B801. Two sets of baffles 803 are fixedly connected to the control shaft B801. The turntable 804 is fixedly connected to both ends of the control shaft B801. The two ends of the transmission belt 805 are movably connected to the turntable 804. The control shaft B801 is movably connected to the clamping plate 203 through the threaded groove 204. The surface of the control shaft B801 is threaded, and the thread on the surface of the control shaft B801 is bidirectional. Its function is that when the control shaft B801 rotates, the adjustment structure 805 can be adjusted by controlling the knob C802. The control shaft B801 simultaneously slides the clamping plate 203 inward or outward. The control shaft B801 and the baffle 803 are arranged in a stepped manner. Their function is to effectively limit the movement distance of the clamping plate 203 through the stepped arrangement of the control shaft B801 and the baffle 803. The transmission belt 805 is a crawler. Its function is to simultaneously control the rotation of two sets of control shafts B801. When the control shaft B801 is rotated, it can also drive the clamping plate 203 to slide inward or outward simultaneously. At the same time, the clamping plate 203 can also effectively apply a certain pressure to the drive shaft 103, which can effectively assist the drive shaft 103 in processing the nut and ensure the pressure applied during nut installation.

[0046] Example 3:

[0047] Based on Embodiment 1 and Embodiment 2, as Figure 5As shown, the overlapping mechanism 3 includes: a fixing block B301, an overlapping block 302, a through hole 303, a limiting plate A304, a fixing plate 305, a guide rod B306, an elastic element 307, and a rotating groove 308. The fixing block B301 is fixedly connected to both sides of the connecting box 201. The overlapping block 302 and the limiting plate A304 are slidably connected inside the fixing block B301. The overlapping block 302 and the limiting plate A304 are respectively provided with through holes 303. The overlapping block 302 and the limiting plate A304 are slidably connected to the guide rod B306 through the through holes 303. The guide rod B306 is fixedly connected to both sides of the fixing plate 305. The fixing plate 305 is fixedly connected inside the fixing block B301. An elastic element 307 is movably connected to the guide rod B306. Both ends of the elastic element 307 are respectively attached to the limiting plate A304 and the fixing plate 305. The rotating groove 308 is respectively set in the fixing block B301 and the fixing plate 305. The fixing block B301 and the overlapping block 302 are movably connected to the connecting plate 106 through the connecting groove 107. The overlapping block 302 is wedge-shaped. Its function is to allow the overlapping block 302 to automatically retract due to the slope set on one side. The overlapping block 302 and the limiting plate A304 are stepped. Its function is to limit the sliding distance of the overlapping block 302 through the stepped overlapping block 302 and the limiting plate A304. The elastic element 307 is a spring. Its function is to control the overlapping block 302 to slide automatically to both sides.

[0048] like Figure 6 As shown, the control structure 4 includes: a control shaft A401, a knob A402, an insert slot A403, a gear 404, and a rack 405. The control shaft A401 is rotatably connected to the fixed block B301 and the fixed plate 305 via a rotating groove 308. A knob A402 is fixedly connected to one end of the control shaft A401. An insert slot A403 is also provided inside the knob A402. Two sets of gears 404 are fixedly connected to the control shaft A401. The two sides of each gear 404 mesh with the rack 405. One end of the rack 405 is fixedly connected to the limiting plate A304. The insert slot... A403 is arranged in a cross shape. Its function is to allow the screwdriver to control the rotation of the knob A402 and the control shaft A401 through the cross-shaped insertion slot A403. The connecting box 201 can be effectively assembled on one side of the storage box 101 through the fixing block B301 and the overlapping block 302. The assembly method is relatively simple. When the control shaft A401 is rotated, the overlapping block 302 can be retracted through the gear 404 and the rack 405. This can effectively disassemble and replace the detection device, and also facilitate the inspection and maintenance of the detection device, thereby reducing the operating cost of the detection device.

[0049] Example 4:

[0050] Based on Examples 1, 2, and 3, as follows Figure 9 As shown, the limiting mechanism 7 includes: a limiting plate B701, a slider 702, a reserved hole B703, an adjusting shaft 704, a bevel gear A705, a bevel gear B706, a rotating shaft 707, and a knob B708. The bottom of the limiting plate B701 is fixedly connected to the slider 702, which also has a reserved hole B703. The slider 702 is slidably connected to the guide rod A207 through the reserved hole B703. The adjusting shaft 704 and the rotating shaft 707 are rotatably connected to the connecting box 201. One end of the adjusting shaft 704 is fixedly connected to the bevel gear A705, and the rotating shaft 707 is also fixedly connected to the bevel gear B706. The bevel gear A705 meshes with the bevel gear B706. The top of the rotating shaft 707 is also fixedly connected to the knob B708. The limiting plate B701 is also movably connected to the transmission line 602. The adjusting shaft 704 is a screw, which controls the sliding of the limiting plate B701. The limiting plate B701 is L-shaped, which supports and limits the transmission line 601. The transmission line 602 on the sensor 601 side can effectively transmit data to the control terminal. The transmission line 602 can also be fixed by the limiting plate B701 to prevent the detection device from shaking after the motor 102 is turned on, thus preventing the transmission line 602 from detaching from the detector 601. This effectively ensures signal transmission and feedback and avoids signal interruption.

[0051] The specific usage and function of this embodiment are as follows:

[0052] First, the connecting box 201 can be assembled onto one side of the storage box 101 using the fixing block B301 and the overlapping block 302. Simultaneously, when the knob A402 and control shaft A401 are rotated, the overlapping block 302 can be retracted via the gear 404 and rack 405, facilitating the removal of the connecting box 201. After the connecting box 201 is installed, the rotating ring 501 can be installed on the drive shaft 103 via the insertion slot 503. The rotating ring 501 and the connecting ring 504 can rotate simultaneously with the drive shaft 103. After the motor 102 is turned on, the nut can be installed via the drive shaft 103. When the rotating ring 501 rotates, the detector 502 and sensor 601 can effectively count the number of rotations of the rotating ring 501. The collected data can be transmitted to the terminal via transmission line 602. The limit plate B701 can be slid by adjusting shaft 704. When sliding, the limit plate B701 can also limit the transmission line 602, fixing it to one side of the sensor 601, which can effectively prevent signal transmission interruption. When installing the nut via drive shaft 103, control shaft B801 can be rotated, and clamping plate 203 can be attached to both sides of drive shaft 103 via control shaft B801. The torque of drive shaft 103 during rotation can be adjusted by clamping plate 203, and pressure can be applied to the nut via drive shaft 103, which can effectively ensure the installation quality of the nut.

Claims

1. A monitoring device for the nut riveting process, characterized in that: The connection includes a connecting structure (2); the two sides of the connecting structure (2) are respectively fixedly connected to an overlapping mechanism (3), the connecting structure (2) is movably connected to the driving structure (1) through the overlapping mechanism (3), the inside of the overlapping mechanism (3) is movably connected to a control structure (4), the inside of the connecting structure (2) is respectively movably connected to a rotating mechanism (5) and an adjusting structure (8), the rotating mechanism (5) is movably connected to the driving structure (1), the top of the connecting structure (2) is respectively movably connected to a detection mechanism (6) and a limiting mechanism (7), the limiting mechanism (7) is movably connected to the detection mechanism (6), the rotating mechanism (5) includes: a rotating ring (501), a detector (502), and an insertion slot B (503), the detector (502) is fixedly connected to one side of the rotating ring (501), and the insertion slot B (503) is provided on the inner side of the rotating ring (501); The drive structure (1) includes: a storage box (101), a motor (102), a drive shaft (103), a fixing block A (104), a reserved hole A (105), a connecting plate (106), and a connecting groove (107). The motor (102) is fixedly connected inside the storage box (101). The drive shaft (103) is fixedly connected to one end of the motor (102). Fixing blocks A (104) are fixedly connected to both sides of the storage box (101). The fixing blocks A (104) are provided with reserved holes A (105). Two sets of connecting plates (106) are fixedly connected to one end of the storage box (101). The connecting plates (106) are provided with connecting grooves (107) inside. The connection structure (2) includes: a connection box (201), a fixing rod (202), a clamping plate (203), and a threaded groove (204). The fixing rod (202) is fixedly connected inside the connection box (201). The clamping plate (203) is arranged in two sets, and the two ends of the clamping plate (203) are slidably connected to the fixing rod (202) respectively. The clamping plate (203) is provided with threaded grooves (204) on both sides. The clamping plate (203) is respectively attached to both sides of the drive shaft (103). The connection structure (2) further includes: a reserved groove (205), a sliding groove (206), a guide rod A (207), and a hollow groove (208). The reserved groove (205) is provided on one side of the connection box (201), the top of the connection box (201) is provided with a sliding groove (206), the guide rod A (207) is fixedly connected to the connection box (201) through the sliding groove (206), and the connection box (201) is provided with a hollow groove (208). The overlapping mechanism (3) includes: a fixed block B (301), an overlapping block (302), a through hole (303), a limiting plate A (304), a fixed plate (305), a guide rod B (306), an elastic element (307), and a rotating groove (308). The fixed block B (301) is fixedly connected to both sides of the connecting box (201). The overlapping block (302) and the limiting plate A (304) are slidably connected in the fixed block B (301). The overlapping block (302) and the limiting plate A (304) are respectively provided with through holes (303). The overlapping block (302) and the limiting plate A (304) are respectively connected through the through holes (303). 03) Sliding connection with guide rod B (306), guide rod B (306) is fixedly connected to both sides of fixed plate (305), fixed plate (305) is fixedly connected in fixed block B (301), elastic element (307) is movably connected on guide rod B (306), the two ends of elastic element (307) are respectively attached to limit plate A (304) and fixed plate (305), rotating groove (308) is respectively set in fixed block B (301) and fixed plate (305), fixed block B (301) and overlapping block (302) are movably connected to connecting plate (106) through connecting groove (107); The control structure (4) includes: control shaft A (401), knob A (402), insert slot A (403), gear (404), and rack (405). Control shaft A (401) is rotatably connected to fixed block B (301) and fixed plate (305) respectively through rotating slot (308). One end of control shaft A (401) is fixedly connected to knob A (402). Insert slot A (403) is provided in knob A (402). Two sets of gears (404) are fixedly connected to control shaft A (401). The two sides of gear (404) are respectively meshed with rack (405). One end of rack (405) is fixedly connected to limit plate A (304). The rotating mechanism (5) includes: a connecting ring (504), which is fixedly connected to one side of the rotating ring (501). The connecting ring (504) is rotatably connected to the connecting box (201) through a reserved slot (205). The rotating ring (501) is movably connected to the drive shaft (103) through the insertion slot B (503). The detection mechanism (6) includes: a sensor (601) and a transmission line (602). The sensor (601) is fixedly connected to the top of the connection box (201). The sensor (601) is set above the detector (502). The transmission line (602) is movably connected to one side of the sensor (601). The limiting mechanism (7) includes: a limiting plate B (701), a slider (702), a reserved hole B (703), an adjusting shaft (704), a bevel gear A (705), a bevel gear B (706), a rotating shaft (707), and a knob B (708). The bottom of the limiting plate B (701) is fixedly connected to the slider (702), and the slider (702) is provided with a reserved hole B (703). The slider (702) is connected to the guide rod A (207) through the reserved hole B (703). The adjusting shaft (704) and the rotating shaft (707) are rotatably connected in the connecting box (201). One end of the adjusting shaft (704) is fixedly connected to a bevel gear A (705), and a bevel gear B (706) is fixedly connected to the rotating shaft (707). The bevel gear A (705) and the bevel gear B (706) mesh with each other. A knob B (708) is fixedly connected to the top of the rotating shaft (707). The limiting plate B (701) is movably connected to the transmission line (602). The adjustment structure (8) includes: control shaft B (801), knob C (802), baffle (803), turntable (804), and transmission belt (805). Control shaft B (801) is rotatably connected in the connecting box (201). Knob C (802) is fixedly connected to the top of control shaft B (801). Baffle (803) is fixedly connected to control shaft B (801) in two sets. Turntable (804) is fixedly connected to both ends of control shaft B (801). Both ends of transmission belt (805) are movably connected to turntable (804). Control shaft B (801) is movably connected to clamp (203) through threaded groove (204).

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