Automatic centering clamp for pipeline machining

Abstract

The utility model discloses an automatic centering clamp for pipeline machining, which comprises a fixing plate, two groups of clamping mechanisms and a driving mechanism for driving the two clamping mechanisms to move in the same direction or in opposite directions simultaneously are mounted on the fixing plate; the clamping mechanism comprises a mounting base, a supporting rod is connected to the position, located on the periphery of the mounting hole, of the mounting base, a bottom plate is fixedly connected to the supporting rod, a rotating wheel is rotationally connected to the position, located above the bottom plate, of the supporting rod, a rotating plate bent in the clockwise direction is connected to one side of the rotating wheel, and a positioning rod is in threaded connection with the outer end of the rotating plate. A first motor is installed on the lower portion of the installation base and connected with a first transmission shaft, a gear is connected to the first transmission shaft, gear rings are arranged on the peripheries of the rotating wheels, the gear is meshed with the gear rings of the three rotating wheels, and a top plate is detachably connected to the portion, above the rotating wheels, of the supporting rod. By starting the first motor, all the positioning rods can be driven to rotate clockwise or anticlockwise at the same time, so that clamping of pipe fittings with different diameters is achieved, and the pipe fittings can be centered.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning fixture technical field, concretely is a kind of automatic centering fixture for pipeline processing. BACKGROUND

[0002] Pipe fitting needs to be clamped during processing, so that it can be kept stable to facilitate processing. However, the current clamping device has the following problems: (1) When clamping the pipeline, it cannot quickly center the pipeline, so that the pipeline is not in the center position after being fixed, which is not conducive to processing; (2) Only one pipeline can be fixed at a time, resulting in low processing efficiency; (3) It can only be used as a tool for fixing the pipeline and cannot be used as a clamp to grab the pipeline, so the function is single. SUMMARY

[0003] To solve the problems mentioned in the background art, the utility model provides an automatic centering fixture for pipeline processing.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] An automatic centering fixture for pipeline processing includes a fixed plate, two sets of clamping mechanisms are installed on the fixed plate, and a driving mechanism is also installed on the fixed plate to drive the two clamping mechanisms to move simultaneously in the same direction or in opposite directions; the clamping mechanism includes a mounting seat, an installation hole is formed in the mounting seat, three support rods are connected to the periphery of the installation hole on the mounting seat, a bottom plate is fixedly connected to the support rods, a rotating wheel is rotatably connected to the top of the support rods, a rotating plate is connected to one side of the rotating wheel and curves in the clockwise direction, three positioning rods are threadedly connected to the outer ends of the three rotating plates, a first motor is installed at the lower part of the mounting seat, a first transmission shaft is connected to the first motor through a coupling, a gear is connected to the first transmission shaft, the gear is rotatably arranged in the installation hole, a gear ring is arranged on the periphery of the rotating wheel, the gear meshes with the gear rings of the three rotating wheels, the distances between the three positioning rods and the center of the gear are equal, and a top plate is detachably connected to the top of the rotating wheel on the support rods.

[0006] Preferably, the driving mechanism includes bearing seats connected to the bottom surface of the fixed plate at both ends, a lead screw rotatably connected to the two bearing seats, a second motor installed at one end of the fixed plate, a second transmission shaft connected to the second motor through a coupling, a driving wheel connected to the first transmission shaft, and a driven wheel connected to the lead screw. The driving wheel and the driven wheel are drivingly connected through a transmission belt. The lead screw is provided with reverse threads on both sides. The driving mechanism further includes screw sleeves threadedly connected to both sides of the lead screw, a guide rail connected to one side of the fixed plate, and two mounting seats connected to the two screw sleeves respectively. One side of the mounting seat is provided with a sliding block. A sliding groove is formed in the sliding block and is slidingly connected to the guide rail through the sliding groove.

[0007] Preferably, the positioning rod includes a screw, a positioning block connected to the upper end of the screw, and a nut threadedly connected to the lower end of the screw. The screw is threadedly connected to the rotating plate, the nut is tightly pressed against the bottom surface of the rotating plate, and the cross-section of the positioning block is trapezoidal.

[0008] Preferably, a robotic arm connecting seat is connected to one side of the fixing plate.

[0009] Preferably, the outer wall of the upper end of the support rod is provided with an external thread, and two gaskets are connected by the external thread. The top surface of the top plate is provided with a groove, the diameter of the gasket is smaller than the diameter of the groove, the upper gasket is tightly pressed in the groove, and the lower gasket is tightly pressed on the bottom surface of the top plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] Two sets of clamping mechanisms can be used to position two pipes, allowing simultaneous processing. The position of the two clamping mechanisms can be adjusted by a drive mechanism. This allows the distance between the two clamping mechanisms to be adjusted according to the pipe diameters, preventing the pipes from being too close together. Furthermore, the clamping mechanisms can serve as gripping devices, allowing them to grasp pipes at different positions, expanding their range of applications.

[0012] By starting the first motor, the gear is driven to rotate, the gear drives the wheel to rotate, and the wheel drives the rotating plate to rotate, thereby driving all the positioning rods to rotate clockwise or counterclockwise at the same time to achieve clamping of pipes of different diameters and to center the pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the present utility model;

[0014] Figure 2 A schematic diagram of another direction of the present invention;

[0015] Figure 3 It is the main view of the clamping mechanism;

[0016] Figure 4 This is a schematic diagram of the clamping mechanism after removing the top plate and mounting base;

[0017] In the figure: 1-fixed plate, 2-clamping mechanism, 201-mounting seat, 202-support rod, 203-bottom plate, 204-rotating wheel, 205-rotating plate, 206-positioning rod, 2061-screw, 2062-positioning block, 2063-nut, 207-first motor, 208-gear, 209-top plate, 210-slider, 211-gasket, 3-bearing seat, 4-screw, 5-second motor, 6-driving wheel, 7-driven wheel, 8-transmission belt, 9-screw sleeve, 10-guide rail, 11-mechanical wall connecting seat. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1

[0020] See also Figure 1-4 , an automatic centering fixture for pipe processing, comprising a fixed plate 1, on which are mounted two sets of clamping mechanisms 2, and a driving mechanism for driving the two clamping mechanisms 2 to move simultaneously in the same direction or in opposite directions; the clamping mechanism 2 comprises a mounting seat 201, on which a mounting hole is formed, and on which the mounting seat 201 is connected three support rods 202 located on the periphery of the mounting hole, a base plate 203 is fixedly connected to the support rods 202, and a rotating wheel 204 is rotatably connected to the support rods 202 above the base plate, and a rotating plate 200 bent in a clockwise direction is connected to one side of the rotating wheel 204. 5. The outer ends of the three rotating plates 205 are all threadedly connected to positioning rods 206. A first motor 207 is mounted at the bottom of the mounting base 201. The first motor 207 is connected to a first transmission shaft via a coupling. A gear 208 is connected to the first transmission shaft and is rotatably mounted within the mounting hole. A ring gear is provided on the periphery of the rotating wheel 204. The gear 208 meshes with the ring gears of the three rotating wheels 204. The three positioning rods 206 are equidistant from the center of the gears 208. A top plate 209 is detachably connected to the support rod 202 above the rotating wheel 204. The rotating plate is movably mounted between the bottom and top plates. By starting the first motor 201, the gears rotate, which in turn rotate the rotating wheel, which in turn rotates the rotating plate. This drives all positioning rods to rotate clockwise or counterclockwise simultaneously, thereby clamping the pipe fitting and centering the pipe fitting.

[0021] The outer wall of the upper end of the support rod 202 is provided with an external thread, and two gaskets 211 are connected by the external thread. The top surface of the top plate 209 is provided with a groove. The diameter of the gasket is smaller than the diameter of the groove. The upper gasket is pressed tightly into the groove, and the lower gasket is pressed tightly against the bottom surface of the top plate. When installing the top plate, first thread the lower gasket onto the support rod, then install the top plate onto the support rod so that the top plate is located on the lower gasket. Then, install the upper gasket so that the upper gasket is hidden in the groove, thus completing the installation of the top plate. When it is necessary to maintain the gears, rotating plate, and rotating wheel, only the top plate needs to be disassembled.

[0022] The driving mechanism includes a bearing seat 3 connected to both ends of the bottom surface of the fixed plate, a screw rod 4 rotatably connected to the two bearing seats, a second motor 5 installed at one end of the fixed plate, a second transmission shaft connected to the second motor through a coupling, a driving wheel 6 connected to the first transmission shaft, and a driven wheel 7 connected to the screw rod. The driving wheel 6 and the driven wheel 7 are connected by a transmission belt 8. The screw rod 4 is provided with opposite threads on both sides. The driving mechanism also includes a screw sleeve 9 threadedly connected to both sides of the screw rod and a guide rail 10 connected to one side of the fixed plate. The two screw sleeves 9 are respectively connected to the two mounting seats 201. One side of the mounting seat 201 is provided with a slider 210. The slider 210 is provided with a slide groove and is slidably connected to the guide rail 10 through the slide groove. Starting the second motor 5 drives the screw rod to rotate, which can drive the slider to move along the guide rail. Since the screw rod is provided with opposite threads on both sides, the screw rod drives the two mounting seats to move relative to or in opposite directions at the same time during rotation.

[0023] The positioning rod 206 comprises a screw 2061, a positioning block 2062 connected to the upper end of the screw, and a nut 2063 threadedly connected to the lower end of the screw. The screw is threadedly connected to the rotating plate, and the nut 2063 is tightly pressed against the bottom surface of the rotating plate 205. The positioning block 2062 has a trapezoidal cross-section. The positioning rod is threadedly connected to the rotating plate, making it easy to replace the positioning rod.

[0024] Example 2

[0025] This embodiment differs from embodiment 1 in that a robotic arm connection base 11 is connected to one side of the fixing plate 1. The robotic arm connection base allows the present invention to be mounted on a robotic arm, and can be used to position pipelines or to grab pipe fittings, thus increasing its scope of use.

[0026] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic centering fixture for pipe processing, characterized by: The invention comprises a fixing plate (1), two groups of clamping mechanisms (2) are installed on the fixing plate (1), and a driving mechanism for driving the two clamping mechanisms (2) to move in the same direction or in opposite directions at the same time is also installed on the fixing plate (1); the clamping mechanism (2) comprises a mounting seat (201), a mounting hole is provided on the mounting seat (201), three support rods (202) are connected to the periphery of the mounting hole on the mounting seat (201), a bottom plate (203) is fixedly connected to the support rods (202), a rotating wheel (204) is rotatably connected to the support rods (202) above the bottom plate, and a rotating plate (204) is connected to one side of the rotating wheel (204) which is bent in a clockwise direction. 5), the outer ends of the three rotating plates (205) are all threadedly connected to positioning rods (206), the lower part of the mounting seat (201) is installed with a first motor (207), the first motor (207) is connected to a first transmission shaft through a coupling, the first transmission shaft is connected to a gear (208), the gear (208) is rotatably arranged in the mounting hole, the periphery of the rotating wheel (204) is provided with a gear ring, the gear (208) is meshed with the gear rings of the three rotating wheels (204), the three positioning rods (206) are equidistant from the center of the gear (208), and a top plate (209) is detachably connected to the support rod (202) above the rotating wheel (204).

2. The automatic centering fixture for pipe processing according to claim 1, characterized in that: The driving mechanism comprises a bearing seat (3) connected to both ends of the bottom surface of the fixed plate, a screw rod (4) rotatably connected to the two bearing seats, a second motor (5) installed at one end of the fixed plate, a second transmission shaft connected to the second motor through a coupling, a driving wheel (6) connected to the first transmission shaft, and a driven wheel (7) connected to the screw rod. The driving wheel (6) and the driven wheel (7) are connected to each other through a transmission belt (8). The screw rod (4) is provided with opposite threads on both sides. The driving mechanism also comprises a screw sleeve (9) threadedly connected to both sides of the screw rod and a guide rail (10) connected to one side of the fixed plate. The two screw sleeves (9) are respectively connected to the two mounting seats (201). A slider (210) is provided on one side of the mounting seat (201). The slider (210) is provided with a slide groove and is slidably connected to the guide rail (10) through the slide groove.

3. The automatic centering fixture for pipe processing according to claim 2, characterized in that: The positioning rod (206) includes a screw (2061), a positioning block (2062) connected to the upper end of the screw, and a nut (2063) threadedly connected to the lower end of the screw. The screw is threadedly connected to the rotating plate, and the nut (2063) is tightly pressed against the bottom surface of the rotating plate (205). The cross section of the positioning block (2062) is trapezoidal.

4. The automatic centering fixture for pipe processing according to claim 3, characterized in that: The outer wall of the upper end of the support rod (202) is provided with an external thread, and two gaskets (211) are connected through the external thread. The top surface of the top plate (209) is provided with a groove, and the diameter of the gasket is smaller than the diameter of the groove. The upper gasket is tightly pressed in the groove, and the lower gasket is tightly pressed on the bottom surface of the top plate.

5. The automatic centering fixture for pipe processing according to claim 4, characterized in that: One side of the fixing plate (1) is connected to a mechanical arm connecting seat (11).

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