Clamp for machining steel pipes

Abstract

The application discloses a clamp for steel pipe machining, and belongs to the technical field of steel pipe machining clamps.The clamp comprises oppositely distributed clamping tables and platforms fixedly installed on the two clamping tables, both ends of the platform are provided with adjusting seats, the adjusting seats are oppositely provided with fixing seats and clamping mechanisms for clamping steel pipes, the clamping mechanisms comprise first clamping seats and second clamping seats oppositely installed on the fixing seats, the first clamping seats and the second clamping seats are fixedly installed with connecting blocks, and the connecting blocks are rotatably connected with clamping rollers; the clamping rollers are installed on the clamping seats through the connecting blocks, can move with the fixing seats and form circumferential clamping on the steel pipes, four groups of the clamping rollers are close to each other to clamp and fix the circular steel pipes, and the surfaces of the clamping rollers are provided with rubber sleeves with anti-skid lines, so that the clamping of the steel pipes can be prevented from sliding and direct hard contact can be avoided to cause scratching and damage.

Description

Technical Field

[0001] This application relates to the field of steel pipe processing fixture technology, specifically a fixture for steel pipe processing. Background Technology

[0002] Steel with a hollow cross-section, whose length is much greater than its diameter or circumference, is classified into circular, square, rectangular and irregular steel pipes according to the shape of the cross-section. During the processing, steel pipes usually need to be fixed by clamps to ensure processing accuracy and safety.

[0003] Currently, most common steel pipe processing fixtures on the market adopt a relatively distributed arc-shaped clamping plate structure. This type of fixture has a simple design principle and is easy to operate, and can effectively clamp and fix the round pipe, thereby ensuring the stability during processing. However, the existing arc-shaped clamping plate structure has some limitations in application. The main limitation is that it can only be used to clamp round pipes of a single specification, that is, only for round pipes of a specific radius. In actual production, there are many specifications of steel pipes, especially for round pipes with larger or smaller radii. For round pipes with larger radii, the clamping plate cannot cover the entire circumference, resulting in insufficient clamping force or even ineffective clamping. For round pipes with smaller radii, the contact area of ​​the arc-shaped clamping plate is too large, which may cause uneven clamping or even damage to the surface of the round pipe.

[0004] Therefore, this application provides a fixture for steel pipe processing to solve the above problems. Utility Model Content

[0005] This application provides a steel pipe processing fixture, which aims to solve the limitations of the existing arc-shaped clamping plate structure mentioned in the background art, mainly that it can only be adapted to a single specification of round pipe.

[0006] To achieve the above objectives, this application provides the following technical solution: a steel pipe processing fixture, comprising clamping tables that are relatively distributed and a platform fixedly installed on the two clamping tables, wherein adjusting seats are provided at both ends of the platform, and fixed seats and clamping mechanisms for clamping steel pipes are relatively distributed on the adjusting seats. The clamping mechanism includes a first clamping seat and a second clamping seat mounted opposite each other on a fixed base. A connecting block is fixedly mounted on both the first and second clamping seats. A clamping roller is rotatably connected to the connecting block. An adjusting seat has a groove for moving the fixed base. A bidirectional lead screw, threaded into the fixed base, is rotatably connected within the groove. One end of the bidirectional lead screw passes through the adjusting seat and is fitted with a transmission toothed belt. A support base is fixedly mounted on the clamping platform. A servo motor is mounted on the support base. The output end of the servo motor is fixedly connected to one of the transmission toothed belts. The two transmission toothed belts are meshed and fitted together via transmission gears. The surface of the clamping roller is fitted with a rubber sleeve with anti-slip texture, which prevents slippage when clamping the steel pipe and avoids scratches caused by direct hard contact.

[0007] Preferably, the connecting block has a pin hole, a limit ring is fixedly installed inside the pin hole, both ends of the clamping roller are provided with shafts that are adapted to the pin hole, both the shafts and the limit ring are provided with keyways, and the connecting block is detachably connected with a pin.

[0008] Preferably, a round rod is fixedly installed on the pin, and the round rod is provided with a protrusion that matches the keyway.

[0009] Preferably, the fixed base has a limiting groove, the second clamping base has a slider fixedly installed, the slider is slidably connected to the limiting groove, the top of the fixed base has a fixed plate fixedly installed, the inside of the fixed base is rotatably connected to a screw, the upper end of the screw passes through the fixed plate, and a torsion wheel is fixedly installed at the upper end of the screw. The second clamping base has a threaded hole, the screw is threaded into the threaded hole, and the second clamping base can move up and down along the slider in the limiting groove of the fixed base to finely adjust the clamping height.

[0010] Preferably, a third clamping seat is fixedly installed on one side of the fixing plate. The third clamping seat is provided with a convex and groove, and the convex and groove of the third clamping seat fits against the outer wall of the steel pipe, mainly for clamping square and rectangular tubes.

[0011] The clamping rollers are mounted on the clamping base via connecting blocks. They can move with the fixed base and form a circumferential clamping of the steel pipe. A total of four sets of clamping rollers clamp and fix the circular steel pipe by approaching each other. The surface of the clamping rollers is covered with rubber sleeves with anti-slip texture, which can prevent slippage when clamping the steel pipe and avoid scratches caused by direct hard contact.

[0012] The fixture uses a rotating torsion wheel to drive a screw to rotate. The screw engages with the threaded hole of the second clamping seat, causing the second clamping seat to move up and down along the slider within the limiting groove of the fixed seat, thus finely adjusting the clamping height and providing a fit for round steel pipes of different sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a steel pipe processing fixture; Figure 2 This is a schematic diagram of the slider's structure; Figure 3 This is a schematic diagram of the limiting ring structure.

[0014] In the picture: 1. Clamping table; 11. Support base; 2. Adjusting base; 3. Fixed base; 4. Clamping mechanism; 41. First clamping base; 42. Second clamping base; 421. Slider; 422. Threaded hole; 423. Connecting block; 424. Pin; 43. Clamping roller; 431. Limiting ring; 44. Fixed plate; 45. Third clamping base; 46. Torsion wheel; 5. Bidirectional lead screw; 51. Servo motor; 52. Transmission toothed belt; 53. Transmission gear. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] This embodiment provides a clamp for steel pipe processing, such as Figure 1-3 As shown, the fixture includes clamping tables 1 that are relatively distributed and a platform fixedly installed on the two clamping tables 1. Adjustment seats 2 are provided at both ends of the platform. Fixed seats 3 and clamping mechanisms 4 for clamping steel pipes are relatively distributed on the adjustment seats 2. The clamping mechanism 4 includes a first clamping seat 41 and a second clamping seat 42 mounted opposite to each other on the fixed seat 3. A connecting block 423 is fixedly mounted on both the first clamping seat 41 and the second clamping seat 42. A clamping roller 43 is rotatably connected to the connecting block 423. A sliding groove for the fixed seat 3 to move is opened on the adjusting seat 2. A bidirectional lead screw 5 that is threaded into the fixed seat 3 is rotatably connected in the sliding groove. One end of the bidirectional lead screw 5 passes through the adjusting seat 2 and is fitted with a transmission toothed belt 52. A support seat 11 is fixedly mounted on the clamping table 1. A servo motor 51 is provided on the support seat 11. The output end of the servo motor 51 is fixedly connected to one of the transmission toothed belts 52. The two transmission toothed belts 52 are meshed and fitted together through a transmission gear 53.

[0017] Specifically, the servo motor 51 drives the bidirectional lead screw 5 to rotate through the transmission gear 53 and the transmission belt 52. The bidirectional lead screw 5 drives the fixed seat 3 to move towards or away from each other in the sliding groove of the adjusting seat 2 to adapt to steel pipes of different diameters. The clamping roller 43 is installed on the clamping seat through the connecting block 423. It can move with the fixed seat 3 and form a circumferential clamping on the steel pipe. A total of four sets of clamping rollers 43 clamp and fix the circular steel pipe after they come close to each other.

[0018] The connecting block 423 has a pin hole, and a limit ring 431 is fixedly installed inside the pin hole. Both ends of the clamping roller 43 are provided with shafts that are compatible with the pin hole. Both the shafts and the limit ring 431 are provided with keyways. The connecting block 423 is detachably connected with a pin 424. A round rod is fixedly installed on the pin 424, and a protrusion that is compatible with the keyway is provided on the round rod.

[0019] More specifically, the keyway of the shaft of the clamping roller 43 is adapted to the limiting ring 431, and the pin 424 passes through the pin hole of the connecting block 423. The protrusions are inserted into the keyways of the limiting ring 431 and the shaft of the clamping roller 43 in sequence, thereby providing a locking fixation for the clamping roller 43 and preventing the clamping roller 43 from rotating.

[0020] A limiting groove is provided on the fixed base 3, and a slider 421 is fixedly installed on the second clamping base 42. The slider 421 is slidably connected to the limiting groove. A fixing plate 44 is fixedly installed on the top of the fixed base 3. A screw is rotatably connected inside the fixed base 3. The upper end of the screw passes through the fixing plate 44, and a torsion wheel 46 is fixedly installed on the upper end of the screw. A threaded hole 422 is provided on the second clamping base 42, and the screw is threadedly inserted into the threaded hole 422.

[0021] It should be noted that the rotating torsion wheel 46 drives the screw to rotate, and the screw engages with the threaded hole 422 of the second clamping seat 42, causing the second clamping seat 42 to move up and down along the slider 421 within the limiting groove of the fixed seat 3, finely adjusting the clamping height, thereby providing a fit for round steel pipes of different sizes.

[0022] A third clamping seat 45 is fixedly installed on one side of the fixing plate 44, and the third clamping seat 45 is provided with a protrusion and groove.

[0023] It is worth mentioning that the convex and concave grooves of the third clamping seat 45 fit against the outer wall of the steel pipe, mainly for clamping square and rectangular tubes, improving the applicability of the entire fixture and preventing vibration during processing.

[0024] In use, the servo motor 51 is started to drive the bidirectional lead screw 5 to rotate through the transmission gear 53 and the transmission belt 52. The bidirectional lead screw 5 drives the fixed seat 3 to move towards each other in the slide groove of the adjusting seat 2, thereby adjusting the spacing of the fixed seat 3. Simultaneously, the clamping rollers 43 move closer together. After the clamping rollers 43 move to a distance that is suitable for the size of the steel pipe, the steel pipe is inserted between the four sets of clamping rollers 43. The servo motor 51 is started again to make the clamping rollers 43 completely clamp and fix the steel pipe.

[0025] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A steel pipe processing fixture, comprising clamping tables (1) distributed opposite to each other and a platform fixedly installed on the two clamping tables (1), wherein an adjusting seat (2) is provided at both ends of the platform, and a fixed seat (3) and a clamping mechanism (4) for clamping the steel pipe are distributed opposite to each adjusting seat (2). Its features are: The clamping mechanism (4) includes a first clamping seat (41) and a second clamping seat (42) mounted opposite to each other on the fixed seat (3). A connecting block (423) is fixedly mounted on both the first clamping seat (41) and the second clamping seat (42). A clamping roller (43) is rotatably connected to the connecting block (423). A sliding groove for the fixed seat (3) to move is provided on the adjusting seat (2). A bidirectional lead screw (5) threaded into the fixed seat (3) is rotatably connected in the sliding groove. One end of the bidirectional lead screw (5) passes through the adjusting seat (2) and is fitted with a transmission toothed belt (52). A support seat (11) is fixedly mounted on the clamping table (1). A servo motor (51) is provided on the support seat (11). The output end of the servo motor (51) is fixedly connected to one of the transmission toothed belts (52). The two transmission toothed belts (52) are meshed and fitted together by a transmission gear (53).

2. The steel pipe processing fixture according to claim 1, characterized in that: The connecting block (423) has a pin hole, and a limiting ring (431) is fixedly installed inside the pin hole. Both ends of the clamping roller (43) are provided with shafts that are compatible with the pin hole. Both the shafts and the limiting ring (431) have keyways. The connecting block (423) is detachably connected with a pin (424).

3. The steel pipe processing fixture according to claim 2, characterized in that: A round rod is fixedly installed on the pin (424), and a protrusion adapted to the keyway is provided on the round rod.

4. The steel pipe processing fixture according to claim 3, characterized in that: The fixed seat (3) has a limiting groove, and the second clamping seat (42) is fixedly installed with a slider (421). The slider (421) is slidably connected to the limiting groove. The top of the fixed seat (3) is fixedly installed with a fixing plate (44). The inside of the fixed seat (3) is rotatably connected with a screw. The upper end of the screw passes through the fixing plate (44), and a torsion wheel (46) is fixedly installed at the upper end of the screw. The second clamping seat (42) has a threaded hole (422), and the screw is threadedly inserted into the threaded hole (422).

5. The steel pipe processing fixture according to claim 4, characterized in that: A third clamping seat (45) is fixedly installed on one side of the fixing plate (44), and the third clamping seat (45) is provided with a protrusion and groove.

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