Welding positioning device of coaxial combined connector

Abstract

The invention relates to the technical field of connector welding, in particular to a coaxial combination connector welding positioning device which comprises a main body plate, a coupler clamping mechanism is arranged at the upper end of the main body plate and comprises a guide groove formed in the upper end of the main body plate, and a fifth limiting body is slidably connected into the guide groove; an eighth motor is connected into a groove in the upper end of the fifth limiting body, the transmission shaft end of the eighth motor is connected with a hydraulic telescopic rod, the lower end of the hydraulic telescopic rod is fixedly connected with an annular second pressure sensor, and the lower end of the second pressure sensor is fixedly connected with the upper end of the fifth limiting body; the upper end of the main body plate is connected with a polishing and welding mechanism for polishing and welding; during welding, the controller can calculate the axes through the surface profiles of the two rotating shafts, so that the two rotating shafts of which the axes are close to each other are selected, and excessive deviation of the axes of the two rotating shafts is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of connector welding, and particularly to a welding positioning device for a coaxial combined connector. Background Art

[0002] A rotating shaft connector is a mechanical component used to connect two rotating shafts to achieve power transmission and motion conversion. When installing a rotating shaft connector, it is divided into a rigid coupling and a flexible coupling. The rigid coupling is generally installed between two rotating shafts by means of bolt fastening and welding fixation. In some aerospace equipment and precision lathes, it is necessary to ensure that the axes of the coupling and the two rotating shafts are aligned, reduce the vibration and noise generated during rotation, and reduce the wear between the rotating shaft and the coupling.

[0003] The existing rotating shafts and couplings are produced separately, and the tolerance between the rotating shaft and the coupling is within the safe range. However, when the two are welded and fixed, the error between the rotating shaft and the coupling may reach twice the tolerance, resulting in a large deviation in the axes of the rotating shaft and the coupling after welding, reducing the accuracy and efficiency of torque transmission. During the process of welding and fixing the existing rotating shaft and coupling, since argon arc welding will increase the quality at the weld, it may cause the axis of the coupling after welding to shift, and finally lead to a deviation between the axis of the rotating shaft and the axis of the coupling. When the existing coupling and rotating shaft are welded, manual clamping and positioning are required, with low accuracy and low efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the background art, and to propose a welding positioning device for a coaxial combined connector.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a welding positioning device for a coaxial combined connector, including a main body plate. A coupling clamping mechanism is provided at the upper end of the main body plate. The coupling clamping mechanism includes a guiding groove opened at the upper end of the main body plate. A fifth limiting body is slidably connected in the guiding groove. An eighth motor is connected in the upper end groove of the fifth limiting body. The transmission shaft end of the eighth motor is connected with a hydraulic expansion rod. The lower end of the hydraulic expansion rod is fixedly connected with an annular second pressure sensor. The lower end of the second pressure sensor is fixedly connected with the upper end of the fifth limiting body. A first clamping and fixing mechanism for clamping the shaft body is connected in the guiding groove. The first clamping and fixing mechanism includes a first limiting body slidably arranged in the guiding groove. A second clamping and fixing mechanism for rotatably clamping the shaft body is connected to the upper end of the main body plate. A grinding and welding mechanism for grinding and welding is connected to the upper end of the main body plate.

[0006] Preferably, a double-shaft electric telescopic rod is fixedly connected to the telescopic end of the hydraulic telescopic rod. Connecting plates are respectively fixedly connected to both ends of the double-shaft electric telescopic rod. Clamping plates are respectively fixedly connected to the upper ends of the two connecting plates. A square groove is formed in the lower end surface of the hydraulic telescopic rod. A square body that is slidably matched with the square groove is fixedly connected to the transmission shaft end of the eighth motor.

[0007] Preferably, matching grooves are respectively formed through the side surfaces of the fifth limiting body and the first limiting body. A seventh motor is fixedly connected to the main body plate in the guiding groove. A third threaded rod is fixedly connected to the transmission shaft end of the seventh motor. The third threaded rod penetrates through the two matching grooves. Fixed rings are respectively connected in the two matching grooves. The inner side surfaces of the two fixed rings are respectively arranged in threaded cooperation with the third threaded rod. A plurality of third empty grooves are respectively formed in the outer side surfaces of the two fixed rings. Fifth electric telescopic rods are respectively fixedly connected in the plurality of third empty grooves. Anti-sliding blocks are respectively fixedly connected to the telescopic ends of the plurality of fifth electric telescopic rods.

[0008] Preferably, a first electric telescopic rod is fixedly connected to the upper end of the first limiting body. A first fixing body is fixedly connected to the telescopic end of the first electric telescopic rod. A first empty groove is formed at one end of the first fixing body. A first motor is fixedly connected to the first fixing body in the first empty groove. A fixing shell is fixedly connected to the transmission shaft end of the first motor. One side of the fixing shell is of an open structure. A plurality of second electric telescopic rods distributed at equal angles are fixedly connected to the inner side surface of the fixing shell. Anti-sliding plates are respectively fixedly connected to the telescopic ends of the plurality of second electric telescopic rods.

[0009] Preferably, the grinding and welding mechanism includes two limiting grooves symmetrically formed in the upper end of the main body plate. Second motors are respectively fixedly connected to the main body plate in the two limiting grooves. First threaded rods are respectively fixedly connected to the transmission shaft ends of the two second motors. Second limiting bodies are respectively connected in a matching manner to the sides of the two first threaded rods.

[0010] Preferably, third electric telescopic rods are respectively fixedly connected to the upper ends of the two second limiting bodies. A third fixing body is fixedly connected to the telescopic ends of the two third electric telescopic rods. A second empty groove is formed at the lower end of the third fixing body. A third motor is fixedly connected to the third fixing body in the second empty groove. A second threaded rod is fixedly connected to the transmission shaft end of the third motor. A third limiting body and a fourth limiting body are connected in a threaded manner to the side of the second threaded rod in the second empty groove. The side surfaces of the third limiting body and the fourth limiting body are respectively arranged in sliding cooperation with the second empty groove.

[0011] Preferably, a fourth electric telescopic rod is fixedly connected to the lower groove of the third limiting body. The telescopic end of the fourth electric telescopic rod is fixedly connected to a fourth motor. The transmission shaft end of the fourth motor is fixedly connected to a rotary welding head. A fifth motor is fixedly connected to the lower groove of the fourth limiting body. The transmission shaft end of the fifth motor is fixedly connected to a first pressure sensor. The lower end of the first pressure sensor is fixedly connected to a sixth motor. The transmission shaft end of the sixth motor is fixedly connected to a grinding head.

[0012] Preferably, the second clamping and fixing mechanism includes a sixth electric telescopic rod fixedly arranged at the upper end of the main body plate. The telescopic end of the sixth electric telescopic rod is fixedly connected to a fourth fixing body. A rotating groove is formed through the side surface of the fourth fixing body. The fourth fixing body is rotatably connected to a rotating ring through a gear in the rotating groove. The inner side surface of the rotating ring is fixedly connected with a plurality of seventh electric telescopic rods distributed at equal angles. The telescopic ends of the plurality of seventh electric telescopic rods are respectively fixedly connected with arc-shaped plates.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The first motor drives the fixed shell to rotate, so that the rotation speed of the fixed shell is the same as that of the rotating ring, ensuring that the two rotating shafts rotate horizontally synchronously, improving the efficiency and accuracy of positioning. Then, the coupling is placed on the upper end of the double-shaft electric telescopic rod, and the double-shaft electric telescopic rod is contracted. The double-shaft electric telescopic rod drives the two clamping plates to fix the coupling, and the hydraulic telescopic rod is extended to horizontally place the two rotating shafts and the coupling. 2. The first pressure sensor and the third electric telescopic rod are connected through a controller. The first pressure sensor controls the telescopic of the third electric telescopic rod, and draws the side profile of this rotating shaft through the telescopic amount of the third electric telescopic rod. When the grinding is completed, the fifth motor is started. The fifth motor drives the grinding head to rotate to the square corresponding to the coupling. Then, the third electric telescopic rod and the third motor act together, so that the grinding head grinds according to the profile of the corresponding rotating shaft, enabling the coupling to fit tightly with this rotating shaft, improving the connection strength after welding. Then, repeat this step to grind the other end rotating shaft in the way of profile fitting, improving the connection strength between the coupling and the two rotating shafts after welding. 3. During welding, the controller can calculate the axis centers through the surface profiles of the two rotating shafts, and thus select the rotating shafts with the axis centers close to each other to prevent excessive deviation of the axis centers of the two rotating shafts. Moreover, the axis center designed during the production of the coupling is at the center of the inner circular groove. While the rotary welding head is welding, the welding rate can be controlled simultaneously to adjust the quality change of each angle of the coupling during welding, thereby changing the axis center position of the coupling. When the rotary welding head rotates along the weld for welding, the axis center of the welded coupling is close to the axis centers of the two rotating shafts, so as to reduce the axis center between the welded coupling and the two rotating shafts within a safe range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a sectional view of the whole of the present invention Figure 1 ; Figure 3 is a sectional view of the whole of the present invention Figure 2 ; Figure 4 is a sectional view of the whole of the present invention Figure 3 ; Figure 5 is a partial sectional view of the present invention Figure 1 ; Figure 6 is a partial sectional view of the present invention Figure 2 ; Figure 7 is a partial sectional view of the present invention Figure 3 ; Figure 8 is of the present invention Figure 3 an enlarged view of part A; Figure 9 is of the present invention Figure 3 an enlarged view of part B.

[0015] 1. Main body board; 2. First clamping and fixing mechanism; 3. Grinding and welding mechanism; 4. Coupling clamping mechanism; 5. Second clamping and fixing mechanism; 21. First limiting body; 22. First electric telescopic rod; 23. First fixing body; 24. First motor; 25. Fixed shell; 26. First empty slot; 27. Second electric telescopic rod; 28. Anti-slip plate; 31. First threaded rod; 32. Limiting slot; 33. Second motor; 35. Second limiting body; 36. Third electric telescopic rod; 37. Third fixing body; 38. Third motor; 39. Second empty slot; 310. Second threaded rod; 311. Third limiting body; 312. Fourth limiting body; 313. Fourth electric telescopic rod; 314. Fourth motor; 315. Rotating welding head; 316. Fifth motor; 317. First pressure sensor; 318. Sixth motor; 319. Grinding head; 41. Guide groove; 42. Fifth limiting body; 43. Biaxial electric telescopic rod; 44. Connecting plate; 45. Clamping plate; 46. Seventh motor; 47. Fixed ring; 48. Third empty slot; 49. Fifth electric telescopic rod; 410. Anti-slip block; 411. Hydraulic telescopic rod; 412. Square slot; 413. Square body; 415. Eighth motor; 416. Matching groove; 417. Third threaded rod; 418. Second pressure sensor; 51. Sixth electric telescopic rod; 52. Fourth fixing body; 53. Rotating groove; 54. Rotating ring; 56. Seventh electric telescopic rod; 57. Arc-shaped plate. Detailed implementation manners

[0016] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0017] Please refer to Figures 1 - 9 , a welding positioning device for a coaxial combination connector, including a main body board 1, and a coupling clamping mechanism 4 is arranged at the upper end of the main body board 1.

[0018] In this embodiment, the coupling clamping mechanism 4 includes a guide groove 41 opened at the upper end of the main body board 1. A fifth limiting body 42 is slidably connected in the guide groove 41. An eighth motor 415 is connected in the upper end groove of the fifth limiting body 42. The transmission shaft end of the eighth motor 415 is connected with a hydraulic telescopic rod 411. The lower end of the hydraulic telescopic rod 411 is fixedly connected with an annular second pressure sensor 418. The lower end of the second pressure sensor 418 is fixedly connected with the upper end of the fifth limiting body 42.

[0019] The telescopic end of the hydraulic telescopic rod 411 is fixedly connected with a double-shaft electric telescopic rod 43. Both ends of the double-shaft electric telescopic rod 43 are respectively fixedly connected with a connecting plate 44. The upper ends of the two connecting plates 44 are respectively fixedly connected with a clamping plate 45. A square groove 412 is formed in the lower end surface of the hydraulic telescopic rod 411. The transmission shaft end of the eighth motor 415 is fixedly connected with a square body 413 that is slidably matched with the square groove 412.

[0020] A mating groove 416 is respectively formed through the side surfaces of the fifth limiting body 42 and the first limiting body 21. The main body plate 1 is fixedly connected with a seventh motor 46 in the guiding groove 41. The transmission shaft end of the seventh motor 46 is fixedly connected with a third threaded rod 417. The third threaded rod 417 passes through the two mating grooves 416. Two fixing rings 47 are respectively connected in the two mating grooves 416. The inner side surfaces of the two fixing rings 47 are respectively arranged in threaded cooperation with the third threaded rod 417. A plurality of third empty grooves 48 are respectively formed in the outer side surfaces of the two fixing rings 47. A fifth electric telescopic rod 49 is fixedly connected in each of the plurality of third empty grooves 48. The telescopic ends of the plurality of fifth electric telescopic rods 49 are respectively fixedly connected with an anti-slip block 410.

[0021] Specifically, place the coupling on the upper end of the double-shaft electric telescopic rod 43, and contract the double-shaft electric telescopic rod 43. The double-shaft electric telescopic rod 43 drives the two clamping plates 45 to fix the coupling, and elongates the hydraulic telescopic rod 411 to horizontally place the two rotating shafts and the coupling.

[0022] In this embodiment, a first clamping and fixing mechanism 2 for clamping the shaft body is connected in the guiding groove 41. The first clamping and fixing mechanism 2 includes a first limiting body 21 slidably arranged in the guiding groove 41.

[0023] The upper end of the first limiting body 21 is fixedly connected with a first electric telescopic rod 22. The telescopic end of the first electric telescopic rod 22 is fixedly connected with a first fixing body 23. A first empty groove 26 is formed at one end of the first fixing body 23. A first motor 24 is fixedly connected in the first empty groove 26 of the first fixing body 23. The transmission shaft end of the first motor 24 is fixedly connected with a fixing shell 25. One side of the fixing shell 25 is of an open structure. A plurality of second electric telescopic rods 27 are fixedly connected to the inner side surface of the fixing shell 25 at equal angles. The telescopic ends of the plurality of second electric telescopic rods 27 are respectively fixedly connected with an anti-slip plate 28.

[0024] Specifically, several second electric telescopic rods 27 are extended simultaneously. The several second electric telescopic rods 27 respectively drive the anti-slip plates 28 to squeeze the side surface of the rotating shaft, thereby fixing the two rotating shafts. After that, the rotating ring 54 in the fourth fixing body 52 rotates. At the same time, the first motor 24 drives the fixed shell 25 to rotate, so that the rotation speed of the fixed shell 25 is the same as that of the rotating ring 54.

[0025] In this embodiment, a second clamping and fixing mechanism 5 for rotatably clamping the shaft body is connected to the upper end of the main body plate 1.

[0026] The second clamping and fixing mechanism 5 includes a sixth electric telescopic rod 51 fixedly arranged at the upper end of the main body plate 1. The telescopic end of the sixth electric telescopic rod 51 is fixedly connected with a fourth fixing body 52. A rotating groove 53 is formed through the side surface of the fourth fixing body 52. The fourth fixing body 52 is rotatably connected with a rotating ring 54 through a gear in the rotating groove 53. The inner side surface of the rotating ring 54 is fixedly connected with several seventh electric telescopic rods 56 distributed at equal angles. The telescopic ends of the several seventh electric telescopic rods 56 are respectively fixedly connected with arc-shaped plates 57.

[0027] Specifically, several seventh electric telescopic rods 56 are extended. The several seventh electric telescopic rods 56 drive the arc-shaped plates 57 to clamp the side surface of the rotating shaft.

[0028] In this embodiment, a grinding and welding mechanism 3 for grinding and welding is connected to the upper end of the main body plate 1.

[0029] The grinding and welding mechanism 3 includes two limiting grooves 32 symmetrically formed at the upper end of the main body plate 1. Second motors 33 are respectively fixedly connected to the main body plate 1 in the two limiting grooves 32. The transmission shaft ends of the two second motors 33 are respectively fixedly connected with first threaded rods 31. Second limiting bodies 35 are respectively connected in a matching manner to the sides of the two first threaded rods 31.

[0030] The upper ends of the two second limiting bodies 35 are respectively fixedly connected with third electric telescopic rods 36. The telescopic ends of the two third electric telescopic rods 36 are fixedly connected with a third fixing body 37. A second empty groove 39 is formed at the lower end of the third fixing body 37. A third motor 38 is fixedly connected to the third fixing body 37 in the second empty groove 39. The transmission shaft end of the third motor 38 is fixedly connected with a second threaded rod 310. A third limiting body 311 and a fourth limiting body 312 are connected in a threaded matching manner to the side of the second threaded rod 310 in the second empty groove 39. The side surfaces of the third limiting body 311 and the fourth limiting body 312 are respectively arranged in sliding cooperation with the second empty groove 39.

[0031] A fourth electric telescopic rod 313 is fixedly connected to the lower groove of the third limiting body 311. A fourth motor 314 is fixedly connected to the telescopic end of the fourth electric telescopic rod 313. A rotary welding head 315 is fixedly connected to the transmission shaft end of the fourth motor 314. A fifth motor 316 is fixedly connected to the lower groove of the fourth limiting body 312. A first pressure sensor 317 is fixedly connected to the transmission shaft end of the fifth motor 316. A sixth motor 318 is fixedly connected to the lower end of the first pressure sensor 317. A grinding head 319 is fixedly connected to the transmission shaft end of the sixth motor 318.

[0032] Specifically, two first threaded rods 31 cooperate to drive the second limiting body 35 to move along the limiting groove 32. The two second limiting bodies 35 drive the third fixing body 37 to move above the fourth fixing body 52 through the third electric telescopic rod 36. Then, the third motor 38 drives the second threaded rod 310 to rotate. The second threaded rod 310 cooperates to drive the grinding head 319 to move above this rotating shaft. The sixth motor 318 drives the grinding head 319 to rotate, so as to grind the side surface of the rotating rotating shaft.

[0033] During use, when in use, place a rotating shaft in the fourth fixing body 52, and then simultaneously extend several seventh electric telescopic rods 56. The several seventh electric telescopic rods 56 drive the arc-shaped plate 57 to clamp the side surface of the rotating shaft. Then, place another rotating shaft in the fixed housing 25, and then simultaneously extend several second electric telescopic rods 27. The several second electric telescopic rods 27 respectively drive the anti-slip plates 28 to squeeze the side surface of the rotating shaft, so as to fix the two rotating shafts. Then, the rotating ring 54 in the fourth fixing body 52 rotates. At the same time, the first motor 24 drives the fixed housing 25 to rotate, so that the rotation speed of the fixed housing 25 is the same as that of the rotating ring 54, ensuring that the two rotating shafts rotate horizontally synchronously, improving the positioning efficiency and accuracy. Then, place the coupling on the upper end of the double-axis electric telescopic rod 43, and contract the double-axis electric telescopic rod 43. The double-axis electric telescopic rod 43 drives the two clamping plates 45 to fix the coupling, and extend the hydraulic telescopic rod 411 to horizontally place the two rotating shafts and the coupling.

[0034] After starting two second motors 33, the two second motors 33 drive the first threaded rods 31 to rotate respectively. The two first threaded rods 31 cooperate to drive the second limiting body 35 to move along the limiting groove 32. The two second limiting bodies 35 drive the third fixing body 37 to move above the fourth fixing body 52 through the third electric telescopic rod 36. After that, the third motor 38 drives the second threaded rod 310 to rotate. The second threaded rod 310 cooperates to drive the grinding head 319 to move above this rotating shaft. The sixth motor 318 drives the grinding head 319 to rotate, so as to grind the side surface of the rotating rotating shaft. While grinding, the first pressure sensor 317 is connected to the third electric telescopic rod 36 through the controller. The first pressure sensor 317 controls the telescopic of the third electric telescopic rod 36, and draws the side profile of this rotating shaft through the telescopic amount of the third electric telescopic rod 36. When the grinding is completed, the fifth motor 316 is started. The fifth motor 316 drives the grinding head 319 to rotate to the square of the corresponding coupling. After that, the third electric telescopic rod 36 and the third motor 38 act together, so that the grinding head 319 grinds according to the profile of the corresponding rotating shaft, so that the coupling can be closely attached to this rotating shaft, improving the connection strength after welding. After that, repeat this step, and grind the other end rotating shaft in the way of profile fitting, improving the connection strength between the coupling and the two rotating shafts after welding.

[0035] When the seventh motor 46 and the second motor 33 drive the side surfaces of the two rotating shafts to be respectively placed inside the coupling, the third motor 38 drives the third limiting body 311 to move to a position close to the weld seam, and starts the rotary welding head 315 to weld the connections between the two rotating shafts and the coupling respectively. During welding, the controller can calculate the axis center through the surface profiles of the two rotating shafts, so as to select two rotating shafts with close axis centers, preventing the axis deviation of the two rotating shafts from being too large. And the axis center designed during the production of the coupling is at the center of the inner circular groove. While the rotary welding head 315 is welding, the welding rate can be controlled at the same time to adjust the quality change of each angle of the coupling during welding, so as to change the axis position of the coupling. When the rotary welding head 315 rotates along the weld seam for welding, the axis center of the welded coupling is close to the axis centers of the two rotating shafts, so as to reduce the axis center between the welded coupling and the two rotating shafts within a safe range.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding positioning device for a coaxial combined connector, comprising a main body plate (1), characterized in that: A coupling clamping mechanism (4) is provided at the upper end of the main body plate (1). The coupling clamping mechanism (4) includes a guiding groove (41) opened at the upper end of the main body plate (1). A fifth limiting body (42) is slidably connected in the guiding groove (41). An eighth motor (415) is connected in the upper groove of the fifth limiting body (42). The transmission shaft end of the eighth motor (415) is connected with a hydraulic telescopic rod (411). The lower end of the hydraulic telescopic rod (411) is fixedly connected with an annular second pressure sensor (418). The lower end of the second pressure sensor (418) is fixedly connected with the upper end of the fifth limiting body (42). A first clamping and fixing mechanism (2) for clamping the shaft body is connected in the guiding groove (41). The first clamping and fixing mechanism (2) includes a first limiting body (21) slidably arranged in the guiding groove (41). A second clamping and fixing mechanism (5) for rotatably clamping the shaft body is connected to the upper end of the main body plate (1). A grinding and welding mechanism (3) for grinding and welding is connected to the upper end of the main body plate (1).

2. The welding positioning device of a coaxial combined connector according to claim 1, characterized in that: The telescopic end of the hydraulic telescopic rod (411) is fixedly connected with a double-shaft electric telescopic rod (43). The two ends of the double-shaft electric telescopic rod (43) are respectively fixedly connected with connecting plates (44). The upper ends of the two connecting plates (44) are respectively fixedly connected with clamping plates (45). A square groove (412) is opened on the lower end surface of the hydraulic telescopic rod (411). The transmission shaft end of the eighth motor (415) is fixedly connected with a square body (413) that is slidably matched with the square groove (412).

3. The welding positioning device for a coaxial combined connector according to claim 1, characterized in that: Cooperating grooves (416) are respectively penetrated through the sides of the fifth limiting body (42) and the first limiting body (21). A seventh motor (46) is fixedly connected in the guiding groove (41) of the main body plate (1). The transmission shaft end of the seventh motor (46) is fixedly connected with a third threaded rod (417). The third threaded rod (417) penetrates through the two cooperating grooves (416). Fixed rings (47) are respectively connected in the two cooperating grooves (416). The inner sides of the two fixed rings (47) are respectively arranged in threaded cooperation with the third threaded rod (417). A plurality of third empty grooves (48) are respectively opened on the outer sides of the two fixed rings (47). A fifth electric telescopic rod (49) is fixedly connected in each of the plurality of third empty grooves (48). The telescopic ends of the plurality of fifth electric telescopic rods (49) are respectively fixedly connected with anti-slip blocks (410).

4. The welding positioning device of a coaxial combined connector according to claim 1, characterized in that: The upper end of the first limiting body (21) is fixedly connected to a first electric telescopic rod (22). The telescopic end of the first electric telescopic rod (22) is fixedly connected to a first fixing body (23). One end of the first fixing body (23) is provided with a first empty groove (26). The first fixing body (23) fixedly connects a first motor (24) in the first empty groove (26). The transmission shaft end of the first motor (24) is fixedly connected to a fixing shell (25). One side of the fixing shell (25) is an open structure. The inner side surface of the fixing shell (25) is fixedly connected with a plurality of second electric telescopic rods (27) distributed at equal angles. The telescopic ends of the plurality of second electric telescopic rods (27) are respectively fixedly connected with anti-slip plates (28).

5. The welding positioning device of a coaxial combined connector according to claim 1, characterized in that: The grinding and welding mechanism (3) includes two symmetrically arranged limiting grooves (32) opened at the upper end of the main body plate (1). The main body plate (1) fixedly connects a second motor (33) in each of the two limiting grooves (32). The transmission shaft ends of the two second motors (33) are respectively fixedly connected to a first threaded rod (31). The sides of the two first threaded rods (31) are respectively in threaded engagement with a second limiting body (35).

6. The welding positioning device of a coaxial combined connector according to claim 5, characterized in that: The upper ends of the two second limiting bodies (35) are respectively fixedly connected to a third electric telescopic rod (36). The telescopic ends of the two third electric telescopic rods (36) are fixedly connected to a third fixing body (37). The lower end of the third fixing body (37) is provided with a second empty groove (39). The third fixing body (37) fixedly connects a third motor (38) in the second empty groove (39). The transmission shaft end of the third motor (38) is fixedly connected to a second threaded rod (310). The side of the second threaded rod (310) is in threaded engagement with a third limiting body (311) and a fourth limiting body (312) in the second empty groove (39). The sides of the third limiting body (311) and the fourth limiting body (312) are respectively in sliding fit with the second empty groove (39).

7. The welding positioning device for a coaxial combined connector according to claim 6, characterized in that: A fourth electric telescopic rod (313) is fixedly connected to the lower end groove of the third limiting body (311). The telescopic end of the fourth electric telescopic rod (313) is fixedly connected to a fourth motor (314). The transmission shaft end of the fourth motor (314) is fixedly connected to a rotary welding head (315). A fifth motor (316) is fixedly connected to the lower end groove of the fourth limiting body (312). The transmission shaft end of the fifth motor (316) is fixedly connected to a first pressure sensor (317). The lower end of the first pressure sensor (317) is fixedly connected to a sixth motor (318). The transmission shaft end of the sixth motor (318) is fixedly connected to a grinding head (319).

8. The welding positioning device of a coaxial combined connector according to claim 1, characterized in that: The second clamping and fixing mechanism (5) includes a sixth electric telescopic rod (51) fixedly arranged at the upper end of the main body plate (1). The telescopic end of the sixth electric telescopic rod (51) is fixedly connected with a fourth fixing body (52). A rotating groove (53) is formed through the side surface of the fourth fixing body (52). The fourth fixing body (52) is rotatably connected with a rotating ring (54) through a gear in the rotating groove (53). The inner side surface of the rotating ring (54) is fixedly connected with a plurality of seventh electric telescopic rods (56) distributed at equal angles. The telescopic ends of the plurality of seventh electric telescopic rods (56) are respectively fixedly connected with arc-shaped plates (57).

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