Automatic feeding and discharging device for oil casing threading machine

Abstract

The utility model discloses an automatic feeding and discharging device for an oil casing threading machine. The automatic feeding and discharging device comprises a sliding table mechanism, a base, a supporting casing, an expansion clamping mechanism and an expansion driving mechanism. The supporting sleeve extends in the front-back direction, the rear end of the supporting sleeve is rotationally connected to the base, the expansion clamping mechanism is connected to the front end of the supporting sleeve, and an oil sleeve to be machined is used for being arranged on the expansion clamping mechanism in a sleeving mode. The expansion driving mechanism is connected with the expansion clamping mechanism and used for driving the expansion clamping mechanism to abut against the inner wall of the oil casing in an expansion mode so as to clamp the oil casing, and the sliding table mechanism is used for driving the base to move front and back so as to drive the expanded and clamped oil casing to be fed into a threading machine. According to the automatic feeding and discharging device for the oil casing, the oil casing can be automatically fed into the threading machine and taken out of the threading machine, automatic feeding and discharging of the oil casing can be achieved, the feeding and discharging efficiency can be improved, and the labor cost can be saved.

Description

Technical Field

[0001] The utility model relates to an automatic loading and unloading device for an oil casing threading machine. Background Art

[0002] At present, during the production process of oil casing, it is necessary to feed the oil casing into a threading machine to process threads on the ends of the oil casing. A Chinese patent with publication number CN105290528B discloses a pipe threading machine that can thread and process threads on oil casing. The pipe threading machine has a main shaft, the rear end of the main shaft is connected to a rear hydraulic chuck, and the front end of the main shaft is connected to a front hydraulic chuck. The oil casing can be clamped by the front hydraulic chuck and the rear hydraulic chuck, and then the main shaft rotates to drive the oil casing to rotate, and then the threads are processed on the oil casing by the threading cutter. However, in the pipe threading machine, manual loading and unloading are required to feed the oil casing into the threading machine and manual unloading is required to take the oil casing out of the threading machine. Automatic loading and unloading of the oil casing cannot be achieved, and the loading and unloading of the oil casing needs to be completed manually, which is not only inefficient but also increases labor costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an automatic loading and unloading device for an oil casing threading machine, which can automatically feed the oil casing into the threading machine and take the oil casing out of the threading machine, can realize automatic loading and unloading of the oil casing, can improve the efficiency of loading and unloading and save labor costs.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: an automatic loading and unloading device for an oil casing threading machine, which includes a slide mechanism, a base, a supporting casing, an expansion clamping mechanism and an expansion driving mechanism;

[0005] The support sleeve extends in the front-to-back direction, and the rear end of the support sleeve is rotatably connected to the base;

[0006] The expansion and clamping mechanism is connected to the front end of the supporting sleeve, and the oil casing to be processed is used to be sleeved on the expansion and clamping mechanism;

[0007] The expansion drive mechanism is connected to the expansion clamping mechanism and is used to drive the expansion clamping mechanism to expand against the inner wall of the oil casing and thus clamp the oil casing;

[0008] The base is connected to the slide mechanism, and the slide mechanism is used to drive the base to move forward and backward, thereby driving the oil casing clamped by expansion to move forward to be sent into the threading machine and driving the oil casing clamped by expansion to move backward to exit the threading machine.

[0009] A specific structure of the expansion drive mechanism is further provided, wherein the expansion drive mechanism comprises a push-pull rod and a telescopic drive assembly;

[0010] The rear end of the push-pull rod is rotatably connected to the telescopic drive assembly;

[0011] The front end of the push-pull rod is connected to the expansion clamping mechanism;

[0012] The push-pull rod passes through the inner side of the support sleeve;

[0013] The telescopic drive assembly is connected to the base and is used to drive the push-pull rod to move backward to drive the expansion clamping mechanism to expand the inner wall of the oil casing and then clamp the oil casing. The telescopic drive assembly is also used to drive the push-pull rod to move forward to drive the expansion clamping mechanism to release the expansion of the inner wall of the oil casing.

[0014] A specific structure of the telescopic drive assembly is further provided. The telescopic drive assembly includes a cylinder and a connecting seat. The cylinder is connected to the base, the connecting seat is connected to the cylinder, and the rear end of the push-pull rod is rotatably connected to the connecting seat.

[0015] A specific structure of the expansion and clamping mechanism is further provided, wherein the expansion and clamping mechanism comprises a clamping sleeve, a blocking component, a first expansion body, a second expansion body, a pressure component and an intermediate sleeve;

[0016] The rear end of the clamping sleeve is connected to the front end of the supporting sleeve;

[0017] The blocking component is fixedly connected to the clamping sleeve, and the pressure component and the intermediate sleeve are respectively slidably connected to the clamping sleeve along the front-rear direction;

[0018] The pressure member, the first expansion member, the intermediate sleeve, the second expansion member and the blocking member are arranged in sequence from front to back;

[0019] The first expansion body is connected to the front end of the intermediate sleeve, the second expansion body is connected to the blocking component, and the oil casing is used to be sleeved on the first expansion body and the second expansion body;

[0020] The front end portion of the push-pull rod passes through the clamping sleeve and is connected to the pressure component. When the telescopic drive assembly drives the push-pull rod to move backward, it drives the pressure component to move backward to press the first expansion body, the intermediate sleeve and the second expansion body onto the blocking component in sequence, thereby causing the first expansion body and the second expansion body to expand radially after being compressed to expand the inner wall of the oil casing.

[0021] Furthermore, a first conical portion is provided on the rear end portion of the pressure-applying component for abutting against the first expansion body to expand the first expansion body;

[0022] A second conical portion is disposed on the rear end portion of the intermediate sleeve for abutting against the second expansion body to expand the second expansion body.

[0023] Furthermore, the first expansion body and the second expansion body are made of rubber or silicone.

[0024] Furthermore, a flange connection portion for connecting with the supporting sleeve is provided on the rear end portion of the clamping sleeve.

[0025] A specific structure of the support sleeve and the push-pull rod is further provided, wherein the support sleeve comprises a first tube body and a second tube body, wherein the first tube body is rotatably connected to the base, the rear end of the second tube body is connected to the front end of the first tube body, the rear end of the clamping sleeve is connected to the front end of the second tube body, and at least two support plates are connected to the first tube body;

[0026] The push-pull rod comprises a front rod body, a middle rod body and a rear rod body;

[0027] The rear rod body is arranged on the inner side of the first tube body and is slidably connected to the support plate along the front-rear direction;

[0028] The middle rod body is arranged on the inner side of the second tube body, the front end of the middle rod body is connected to the front rod body, and the rear end of the middle rod body is connected to the rear rod body;

[0029] The front rod body is arranged on the inner side of the clamping sleeve, and the front end portion of the front rod body is connected to the pressure component.

[0030] A specific structure of the slide mechanism is further provided, wherein the slide mechanism comprises a base, a mobile platform and a mobile driving mechanism;

[0031] The mobile platform is slidably connected to the base in the front-rear direction, and the base is connected to the mobile platform;

[0032] The mobile driving mechanism is installed on the base, connected to the mobile platform and used to drive the mobile platform to move forward and backward and then drive the base to move forward and backward.

[0033] Furthermore, the automatic loading and unloading device for the oil casing threading machine also includes a transporting robot for transporting the oil casing to sleeve the oil casing on the expansion clamping mechanism.

[0034] After adopting the above technical solution, the oil casing to be processed is firstly sleeved on the expansion clamping mechanism, and the expansion drive mechanism drives the expansion clamping mechanism to expand against the inner wall of the oil casing and thus clamp the oil casing, and then the slide mechanism drives the base to move forward and then drives the expanded and clamped oil casing to move forward to be sent into the threading machine, so as to process threads on the oil casing through the threading machine. During the processing, the threading machine drives the oil casing to rotate, and when the oil casing rotates, it drives the expansion clamping mechanism and the support sleeve to rotate together. After the processing is completed, the slide mechanism drives the base to move backward and then drives the expanded and clamped oil casing to move backward so as to drive the oil casing to exit the threading machine, and then the expansion drive mechanism drives the expansion clamping mechanism to release the expansion of the inner wall of the oil casing, and then the oil casing is removed from the expansion clamping mechanism. In the embodiment of the present application, the oil casing can be automatically fed into the threading machine and can be automatically taken out from the threading machine, thereby realizing automatic loading and unloading of the oil casing, improving the efficiency of loading and unloading and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the oil casing threading machine of the utility model using an automatic loading and unloading device to feed the oil casing into the threading machine;

[0036] Figure 2 It is a structural schematic diagram of the oil casing threading machine of the utility model using an automatic loading and unloading device to take the oil casing out of the threading machine;

[0037] Figure 3 It is a structural schematic diagram of the base, the supporting sleeve, the expansion clamping mechanism and the expansion driving mechanism of the utility model;

[0038] Figure 4 It is a structural schematic diagram of the expansion clamping mechanism of the utility model. DETAILED DESCRIPTION

[0039] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0040] like Figures 1 to 4 As shown, an automatic loading and unloading device for an oil casing threading machine comprises a slide mechanism 1, a base 2, a supporting sleeve 3, an expansion clamping mechanism 4 and an expansion driving mechanism 5;

[0041] The support sleeve 3 extends in the front-to-back direction, and the rear end of the support sleeve 3 is rotatably connected to the base 2;

[0042] The expansion and clamping mechanism 4 is connected to the front end of the support sleeve 3, and the oil casing 6 to be processed is used to be sleeved on the expansion and clamping mechanism 4;

[0043] The expansion drive mechanism 5 is connected to the expansion clamping mechanism 4 and is used to drive the expansion clamping mechanism 4 to expand against the inner wall of the oil casing 6 and thus clamp the oil casing 6;

[0044] The base 2 is connected to the slide mechanism 1, and the slide mechanism 1 is used to drive the base 2 to move forward and backward, thereby driving the expanded and clamped oil casing 6 to move forward to the feeding threading machine 7 and driving the expanded and clamped oil casing 6 to move backward to exit the threading machine 7. Specifically, the oil casing 6 to be processed is first sleeved on the expansion clamping mechanism 4, and the expansion drive mechanism 5 drives the expansion clamping mechanism 4 to expand and press against the inner wall of the oil casing 6 to clamp the oil casing 6, and then the slide mechanism 1 drives the base 2 to move forward and drives the expanded and clamped oil casing 6 to move forward to the feeding threading machine 7, so as to process threads on the oil casing 6 through the threading machine 7. During the processing, the threading machine 7 will drive the oil casing 6 to rotate, and when the oil casing 6 rotates, it will drive the expansion clamping mechanism 4 and the support sleeve 3 to rotate together. After the processing is completed, the slide mechanism 1 drives the base 2 to move backward and then drives the oil casing 6 clamped by the expansion to move backward so as to drive the oil casing 6 to exit the threading machine 7, and then the expansion drive mechanism 5 drives the expansion clamping mechanism 4 to release the expansion of the inner wall of the oil casing 6, and then removes the oil casing 6 from the expansion clamping mechanism 4. In the embodiment of the present application, the oil casing 6 can be automatically fed into the threading machine 7 and can be automatically taken out of the threading machine 7, realizing the automatic loading and unloading of the oil casing 6, improving the efficiency of loading and unloading and saving labor costs.

[0045] like Figures 1 to 4 As shown, the expansion drive mechanism 5 may include a push-pull rod 8 and a telescopic drive assembly;

[0046] The rear end of the push-pull rod 8 is rotatably connected to the telescopic drive assembly;

[0047] The front end of the push-pull rod 8 is connected to the expansion clamping mechanism 4;

[0048] The push-pull rod 8 passes through the inner side of the support sleeve 3;

[0049] The telescopic drive assembly is connected to the base 2 and is used to drive the push-pull rod 8 to move backward to drive the expansion and clamping mechanism 4 to expand the inner wall of the oil casing 6 and then clamp the oil casing 6. The telescopic drive assembly is also used to drive the push-pull rod 8 to move forward to drive the expansion and clamping mechanism 4 to release the expansion of the inner wall of the oil casing 6.

[0050] like Figures 1 to 3As shown, the telescopic drive assembly may include an oil cylinder 9 and a connecting seat 10, wherein the oil cylinder 9 is connected to the base 2, the connecting seat 10 is connected to the oil cylinder 9, and the rear end of the push-pull rod 8 is rotatably connected to the connecting seat 10; specifically, when the oil casing 6 rotates, it will not only drive the expansion clamping mechanism 4 and the support casing 3 to rotate together, but also drive the push-pull rod 8 to rotate together. More specifically, when the oil cylinder 9 is telescopic, it can drive the connecting seat 10 to move forward and backward, and then drive the push-pull rod 8 to move forward and backward through the connecting seat 10, and the push-pull rod 8 can drive the expansion clamping mechanism 4 to expand the inner wall of the oil casing 6 when the push-pull rod 8 moves backward, and can drive the expansion clamping mechanism 4 to release the expansion of the inner wall of the oil casing 6 when the push-pull rod 8 moves forward.

[0051] like Figure 3 , 4 As shown, the expansion and clamping mechanism 4 may include a clamping sleeve 11, a blocking component 12, a first expansion body 13, a second expansion body 14, a pressure component 15 and an intermediate sleeve 16;

[0052] The rear end of the clamping sleeve 11 is connected to the front end of the supporting sleeve 3;

[0053] The blocking member 12 is fixedly connected to the clamping sleeve 11, and the pressure member 15 and the intermediate sleeve 16 are respectively slidably connected to the clamping sleeve 11 along the front-rear direction;

[0054] The pressure member 15, the first expansion member 13, the intermediate sleeve 16, the second expansion member 14 and the blocking member 12 are arranged in sequence from front to back;

[0055] The first expansion body 13 is connected to the front end of the intermediate sleeve 16, the second expansion body 14 is connected to the blocking component 12, and the oil casing 6 is used to be sleeved on the first expansion body 13 and the second expansion body 14;

[0056] The front end of the push-pull rod 8 passes through the clamping sleeve 11 and is connected to the pressure component 15. When the telescopic drive assembly drives the push-pull rod 8 to move backward, it drives the pressure component 15 to move backward to press the first expansion body 13, the intermediate sleeve 16 and the second expansion body 14 on the blocking component 12 in sequence, so that the first expansion body 13 and the second expansion body 14 are radially expanded after being compressed to expand the inner wall of the oil casing 6; specifically, the telescopic drive assembly can also drive the push-pull rod 8 to move forward and drive the pressure component 15 to move forward to release the compression of the first expansion body 13, the intermediate sleeve 16 and the second expansion body 14, so that the first expansion body 13 and the second expansion body 14 are restored to their original size to release the expansion of the inner wall of the oil casing 6. In this embodiment, the blocking component 12 is integrated with the clamping sleeve 11.

[0057] like Figure 4 As shown, the rear end of the pressure member 15 is provided with a first conical portion 17 for abutting against the first expansion body 13 to expand the first expansion body 13;

[0058] A second tapered portion 18 is disposed on the rear end of the intermediate sleeve 16 for abutting against the second expansion body 14 to expand the second expansion body 14 ; specifically, the first tapered portion 17 and the second tapered portion 18 are gradually reduced from front to back.

[0059] like Figure 4 As shown, the first expansion body 13 and the second expansion body 14 are made of rubber or silicone, and a flange connection portion 19 for connecting with the support sleeve 3 is provided on the rear end portion of the clamping sleeve 11 .

[0060] like Figures 1 to 4 As shown, the support sleeve 3 may include a first tube body 20 and a second tube body 21, the first tube body 20 is rotatably connected to the base 2, the rear end of the second tube body 21 is connected to the front end of the first tube body 20, the rear end of the clamping sleeve 11 is connected to the front end of the second tube body 21, and at least two support plates 22 are connected to the first tube body 20;

[0061] The push-pull rod 8 may include a front rod body 23, a middle rod body 24 and a rear rod body 25;

[0062] The rear rod 25 is disposed inside the first tube 20 and is slidably connected to the support plate 22 along the front-rear direction;

[0063] The middle rod body 24 is disposed inside the second tube body 21 , the front end of the middle rod body 24 is connected to the front rod body 23 , and the rear end of the middle rod body 24 is connected to the rear rod body 25 ;

[0064] The front rod body 23 is disposed on the inner side of the clamping sleeve 11, and the front end of the front rod body 23 is connected to the pressure component 15; specifically, the rear end of the second tube body 21 and the front end of the first tube body 20 are connected via a fastener.

[0065] like Figure 1 , 2 As shown, the slide mechanism 1 may include a base 26, a mobile platform 27 and a mobile driving mechanism;

[0066] The mobile platform 27 is slidably connected to the base 26 along the front-back direction, and the base 2 is connected to the mobile platform 27;

[0067] The mobile driving mechanism is installed on the base 26, connected to the mobile platform 27 and used to drive the mobile platform 27 to move forward and backward, thereby driving the base 2 to move forward and backward, thereby driving the oil casing 6 that is tightened and clamped to move forward to be fed into the threading machine 7 and driving the oil casing 6 that is tightened and clamped to move backward to exit the threading machine 7; specifically, the base 26 is fixedly arranged, and the specific structure of the mobile driving mechanism is the existing technology well known to those skilled in the art, and will not be described in detail in this embodiment.

[0068] Specifically, the automatic loading and unloading device for the oil casing threading machine may also include a handling robot for handling the oil casing 6 so as to sleeve the oil casing 6 on the expansion clamping mechanism 4; wherein, after the expansion of the inner wall of the oil casing 6 is released, the handling robot is also used to remove the oil casing 6 sleeved on the expansion clamping mechanism 4; in this embodiment, the handling robot may be a truss robot.

[0069] In summary, the oil casing 6 to be processed is first sleeved on the expansion clamping mechanism 4, and the expansion drive mechanism 5 drives the expansion clamping mechanism 4 to expand against the inner wall of the oil casing 6 and then clamp the oil casing 6, and then the slide mechanism 1 drives the base 2 to move forward and then drives the expanded and clamped oil casing 6 to move forward to be sent into the threading machine 7, so that the threading machine 7 can be used to process the threads on the oil casing 6. During the processing, the threading machine 7 will drive the oil casing 6 to rotate, and when the oil casing 6 rotates, it will drive the expansion clamping mechanism 4 and the support sleeve 3 to rotate together. After the processing is completed, the slide mechanism 1 drives the base 2 to move backward and then drives the expanded and clamped oil casing 6 to move backward so as to drive the oil casing 6 to exit the threading machine 7, and then the expansion drive mechanism 5 drives the expansion clamping mechanism 4 to release the expansion of the inner wall of the oil casing 6, and then remove the oil casing 6 from the expansion clamping mechanism 4. In the embodiment of the present application, the oil casing 6 can be automatically fed into the threading machine 7 and can be automatically taken out of the threading machine 7, thereby realizing automatic loading and unloading of the oil casing 6, improving the efficiency of loading and unloading and saving labor costs.

[0070] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic loading and unloading device for an oil casing threading machine, characterized in that: It comprises a slide mechanism (1), a base (2), a support sleeve (3), an expansion clamping mechanism (4) and an expansion driving mechanism (5); The support sleeve (3) extends in the front-to-back direction, and the rear end of the support sleeve (3) is rotatably connected to the base (2); The expansion clamping mechanism (4) is connected to the front end of the support sleeve (3), and the oil casing (6) to be processed is used to be sleeved on the expansion clamping mechanism (4); The expansion drive mechanism (5) is connected to the expansion clamping mechanism (4) and is used to drive the expansion clamping mechanism (4) to expand and press against the inner wall of the oil casing (6) so as to clamp the oil casing (6); The base (2) is connected to the slide mechanism (1), and the slide mechanism (1) is used to drive the base (2) to move forward and backward, thereby driving the oil casing (6) being clamped by expansion to move forward to be sent into the threading machine (7) and driving the oil casing (6) being clamped by expansion to move backward to exit the threading machine (7).

2. The automatic loading and unloading device for oil casing threading machine according to claim 1 is characterized in that: The expansion drive mechanism (5) comprises a push-pull rod (8) and a telescopic drive assembly; The rear end of the push-pull rod (8) is rotatably connected to the telescopic drive assembly; The front end of the push-pull rod (8) is connected to the expansion clamping mechanism (4); The push-pull rod (8) passes through the inner side of the support sleeve (3); The telescopic drive assembly is connected to the base (2) and is used to drive the push-pull rod (8) to move backward to drive the expansion and clamping mechanism (4) to expand the inner wall of the oil casing (6) and thus clamp the oil casing (6). The telescopic drive assembly is also used to drive the push-pull rod (8) to move forward to drive the expansion and clamping mechanism (4) to release the expansion of the inner wall of the oil casing (6).

3. The automatic loading and unloading device for oil casing threading machine according to claim 2 is characterized in that: The telescopic drive assembly comprises an oil cylinder (9) and a connecting seat (10), wherein the oil cylinder (9) is connected to the base (2), the connecting seat (10) is connected to the oil cylinder (9), and the rear end of the push-pull rod (8) is rotatably connected to the connecting seat (10).

4. The automatic loading and unloading device for oil casing threading machine according to claim 2 is characterized in that: The expansion clamping mechanism (4) comprises a clamping sleeve (11), a blocking component (12), a first expansion body (13), a second expansion body (14), a pressure component (15) and an intermediate sleeve (16); The rear end of the clamping sleeve (11) is connected to the front end of the supporting sleeve (3); The blocking component (12) is fixedly connected to the clamping sleeve (11), and the pressure component (15) and the intermediate sleeve (16) are respectively slidably connected to the clamping sleeve (11) along the front-rear direction; The pressure-applying component (15), the first expansion body (13), the intermediate sleeve (16), the second expansion body (14) and the blocking component (12) are arranged in sequence from front to back; The first expansion body (13) is connected to the front end of the intermediate sleeve (16), the second expansion body (14) is connected to the blocking component (12), and the oil casing (6) is used to be sleeved on the first expansion body (13) and the second expansion body (14); The front end of the push-pull rod (8) passes through the clamping sleeve (11) and is connected to the pressure component (15). When the telescopic drive assembly drives the push-pull rod (8) to move backward, it drives the pressure component (15) to move backward so as to press the first expansion body (13), the intermediate sleeve (16) and the second expansion body (14) onto the blocking component (12) in sequence, thereby causing the first expansion body (13) and the second expansion body (14) to expand radially after being compressed to expand the inner wall of the oil casing (6).

5. The automatic loading and unloading device for oil casing threading machine according to claim 4 is characterized in that: A first conical portion (17) is provided on the rear end portion of the pressure-applying component (15) for abutting against the first expansion body (13) to expand the first expansion body (13); A second conical portion (18) is provided on the rear end portion of the intermediate sleeve (16) for abutting against the second expansion body (14) to expand the second expansion body (14).

6. The automatic loading and unloading device for oil casing threading machine according to claim 4 is characterized in that: The first expansion body (13) and the second expansion body (14) are made of rubber or silicone.

7. The automatic loading and unloading device for oil casing threading machine according to claim 4 is characterized in that: A flange connection portion (19) for connecting to the support sleeve (3) is provided on the rear end portion of the clamping sleeve (11).

8. The automatic loading and unloading device for oil casing threading machine according to claim 4 is characterized in that: The supporting sleeve (3) comprises a first tube body (20) and a second tube body (21); the first tube body (20) is rotatably connected to the base (2); the rear end of the second tube body (21) is connected to the front end of the first tube body (20); the rear end of the clamping sleeve (11) is connected to the front end of the second tube body (21); and at least two supporting plates (22) are connected to the first tube body (20); The push-pull rod (8) comprises a front rod body (23), a middle rod body (24) and a rear rod body (25); The rear rod body (25) is arranged on the inner side of the first tube body (20) and is slidably connected to the support plate (22) along the front-rear direction; The middle rod body (24) is arranged on the inner side of the second tube body (21), the front end of the middle rod body (24) is connected to the front rod body (23), and the rear end of the middle rod body (24) is connected to the rear rod body (25); The front rod body (23) is arranged on the inner side of the clamping sleeve (11), and the front end of the front rod body (23) is connected to the pressure-applying component (15).

9. The automatic loading and unloading device for oil casing threading machine according to claim 1 is characterized in that: The slide mechanism (1) comprises a base (26), a movable platform (27) and a movable driving mechanism; The mobile platform (27) is slidably connected to the base (26) along the front-rear direction, and the base (2) is connected to the mobile platform (27); The mobile drive mechanism is installed on the base (26), connected to the mobile platform (27), and is used to drive the mobile platform (27) to move forward and backward, thereby driving the base (2) to move forward and backward.

10. The automatic loading and unloading device for oil casing threading machine according to claim 1, characterized in that: It also includes a transport robot for transporting the oil casing (6) so as to sleeve the oil casing (6) onto the expansion clamping mechanism (4).

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