Dynamic pipe fitting clamping structure for pipe bending machine

Abstract

The utility model relates to pipe fitting clamping technical field of pipe bender, specifically is a kind of dynamic pipe fitting clamping structure for pipe bender, including machine table, the top of machine table is rotatably connected with two hydraulic cylinders, and the output end between two hydraulic cylinders is fixed with positioning fixture, the positioning fixture includes carrier plate, the top surface of carrier plate is rotatably provided with a plurality of rubber wheels one, the both sides of positioning fixture are slidably arranged with movable clamp, and the movable clamp includes the U-shaped seat slidably connected with carrier plate. In the utility model, by being placed to the position between U-shaped seat and carrier plate with two pipe fittings respectively, the output end contraction of double-end pneumatic cylinder makes two U-shaped seats move to carrier plate direction, so that multiple groups of adjacent two rubber wheels can be clamped and fixed two pipe fittings of different positions, then rubber wheel rotates and makes pipe fitting move to bending machine, to realize bending work of simultaneously pushing and fixing two pipe fittings, and pipe fitting clamping structure is convenient for high-efficiency pushing and fixing pipe fitting.

Description

Technical Field

[0001] This utility model relates to the field of pipe clamping technology for pipe bending machines, specifically a dynamic pipe clamping structure for pipe bending machines. Background Technology

[0002] Pipe bending machines are commonly used equipment for bending pipe fittings. One end of the pipe bending machine is usually equipped with a pipe clamping structure. The pipe clamping structure currently in use can transport the pipe fitting to the bending station of the pipe bending machine, and can also clamp and fix the moving pipe fitting at the bending station of the pipe bending machine, achieving the dual function of pushing and fixing the pipe fitting.

[0003] To improve production efficiency, some processing tables are equipped with two pipe bending machines. However, most pipe clamping structures can only clamp and transport a single pipe, making it difficult for commonly used pipe clamping structures to simultaneously transport pipes to two pipe bending machines to improve pipe bending efficiency. Furthermore, when both ends of a pipe need to be bent, most pipe clamping structures cannot easily switch the positions of the two ends of the pipe to allow for automatic switching between the two ends for bending. Manually assisting the two ends of the pipe to switch between bending is not conducive to improving the efficiency of pipe bending. Utility Model Content

[0004] The purpose of this utility model is to provide a dynamic pipe clamping structure for a pipe bending machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dynamic pipe clamping structure for a pipe bending machine includes:

[0007] The machine base is fixed at one end of the pipe bending machine, and the top of the machine base has two hydraulic cylinders that rotate.

[0008] A positioning fixture is fixed between the output ends of two hydraulic cylinders. The positioning fixture includes a carrier plate. Multiple rubber wheels are rotatable on the top surface of the carrier plate. Columns are fixed at both ends of the carrier plate. A cover plate is fixed to the top of the two columns. Two motors that can drive the corresponding rubber wheels to rotate are fixed to the top surface of the cover plate.

[0009] Two movable clamps are arranged on both sides of the positioning clamp. Each movable clamp includes an inverted bracket that is slidably connected to the carrier plate. Both ends of the inverted bracket are equipped with two rotatable rubber wheels. A motor that can drive the two rubber wheels to rotate is fixed on the top surface of the inverted bracket.

[0010] The double-headed cylinder, fixed to the bottom of the carrier plate, can drive two C-shaped seats to move towards each other or away from each other.

[0011] Furthermore, both ends of the carrier plate are fixed with guide rails, and both ends of the shaped base are fixed with sliders that are respectively slidably engaged with the guide rails at corresponding positions.

[0012] Furthermore, a transmission cavity is provided on the inner bottom of both sides of the carrier plate, a connecting shaft is fixed in the middle of the rubber wheel and rotatably connected to the carrier plate, the connecting shaft extends into the interior of the transmission cavity and a pulley is fixed thereon, and a synchronous belt is connected between the two pulleys.

[0013] Furthermore, the inner bottom of the C-shaped seat is provided with a transmission cavity II, the middle of the rubber wheel II is fixed with a connecting shaft II that is rotatably connected to the C-shaped seat, the connecting shaft II extends into the interior of the transmission cavity II and a pulley II is fixed thereon, and a synchronous belt II is connected between the two pulleys II.

[0014] Furthermore, a support plate is fixed to the inner side of the C-shaped base, and the support plate slides against the top surface of the carrier plate.

[0015] Furthermore, a geared motor is installed and fixed inside the machine tool, and a rotating wheel is fixed at the output end of the geared motor.

[0016] Furthermore, the top surface of the rotating wheel is fixed with two fixing rings, and the fixing rings are installed and fixed with the hydraulic cylinders at corresponding positions.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Two rubber wheels are rotatably mounted on both sides of the top surface of the carrier plate. C-shaped seats are slidably connected to both sides of the carrier plate, and two rubber wheels rotate inside the C-shaped seats. Two pipe fittings are placed in the space between the C-shaped seats and the carrier plate. The two output ends of a double-headed cylinder retract, causing the two C-shaped seats to move simultaneously towards the carrier plate. This allows the rubber wheels at different positions to cooperate in clamping the two pipe fittings. Motor 1 drives multiple rubber wheels to rotate, and motor 2 drives multiple rubber wheels to rotate. The rotation of rubber wheels 1 and 2 transports the two pipe fittings to the bending station of the pipe bending machine. Then, rubber wheels 1 and 2 move closer together to tightly clamp and fix the pipe fittings, facilitating pipe positioning and bending. This allows for the simultaneous pushing and fixing of two pipe fittings for bending, promoting efficient pushing and fixing of the pipe fittings by the clamping structure.

[0019] 2. Two hydraulic cylinders rotate at the top of the machine. The output ends of the hydraulic cylinders are fixed to the carrier plate of the positioning fixture. When the positioning fixture and the movable fixture work together to complete the bending of one end of the pipe, the output end of the hydraulic cylinder extends, causing the positioning fixture and the movable fixture to rise. This moves the bent end of the pipe away from the bending machine. Then, the rotary wheel rotates 180 degrees, causing the hydraulic cylinder to rotate the pipe between the positioning fixture and the movable fixture by 180 degrees. This automatically adjusts the unbent end of the pipe to the top of the bending machine. The output end of the hydraulic cylinder retracts, causing the pipe between the positioning fixture and the movable fixture to move down to the bending position height of the bending machine. The positioning fixture and the movable fixture work together again to position the other end of the pipe to be bent at the bending position for bending. This achieves automatic switching of the two ends of the pipe for bending, which helps to improve the efficiency of bending both ends of the pipe. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the positioning clamp and the movable clamp in this utility model;

[0022] Figure 3 This is a schematic diagram of the bottom structure of the carrier plate in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the clamping pipe fitting between rubber wheel one and rubber wheel two in this utility model;

[0024] Figure 5 This is a schematic diagram of the C-shaped base and the bottom structure of the carrier plate in this utility model.

[0025] In the diagram: 100, machine base; 110, hydraulic cylinder; 120, rotary wheel; 200, positioning fixture; 210, carrier plate; 211, transmission chamber one; 212, pulley one; 220, rubber wheel one; 230, column; 231, cover plate; 240, motor one; 250, guide rail; 300, movable fixture; 310, C-shaped seat; 311, transmission chamber two; 312, pulley two; 313, slider; 314, connecting block; 320, rubber wheel two; 330, motor two; 340, support plate; 400, double-headed cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1, please refer to Figure 1 - Figure 5 In this embodiment of the present invention, a dynamic pipe clamping structure for a pipe bending machine includes a machine base 100 fixedly installed at one end of the pipe bending machine. Two hydraulic cylinders 110 are rotatably connected to the top of the machine base 100. A positioning clamp 200 is fixed between the output ends of the two hydraulic cylinders 110. The positioning clamp 200 includes a carrier plate 210, with multiple rubber wheels 220 rotatably mounted on the top surface of the carrier plate 210. Columns 230 are fixed to both ends of the carrier plate 210, and cover plates 231 are fixed to the top of the two columns 230. The top surface of the cover plate 231 is fixed with two motors 240 that can drive the corresponding rubber wheels 220 to rotate. Movable clamps 300 are slidably arranged on both sides of the positioning clamp 200. The movable clamps 300 include a chamfered seat 310 that is slidably connected to the carrier plate 210. Rubber wheels 320 rotate at both ends inside the chamfered seat 310. The top surface of the chamfered seat 310 is fixed with a motor 330 that can drive the rubber wheels 320 to rotate. A double-headed cylinder 400 is fixed on the bottom surface of the carrier plate 210.

[0028] Specifically, by slidably connecting C-shaped seats 310 on both sides of the carrier plate 210, and having multiple rubber wheels (including rubber wheel one 220 and rubber wheel two 320) rotating on both the top surface of the carrier plate 210 and the interior of the C-shaped seats 310, two pipe fittings are placed between the C-shaped seats 310 and the carrier plate 210 respectively. The output end of the double-headed cylinder 400 retracts, causing the two C-shaped seats 310 to move towards the carrier plate 210. This allows multiple sets of adjacent pairs of rubber wheels to clamp and fix two pipe fittings in different positions. Then, the rotation of the rubber wheels moves the pipe fittings towards the bending machine, thereby achieving simultaneous pushing and fixing of two pipe fittings for bending operations, facilitating the clamping of the pipe fittings. The system efficiently pushes and fixes the pipe fitting. After one end of the pipe fitting is bent, the output end of the hydraulic cylinder 110 extends, causing the carrier plate 210 and the C-shaped seat 310 to move the pipe fitting upwards and away from the bending machine. Then, the rotating wheel 120 drives the hydraulic cylinder 110 to rotate 180 degrees, causing the carrier plate 210 and the C-shaped seat 310 to rotate 180 degrees, making it easier to adjust the other end of the pipe fitting to be bent to the top of the bending machine. The output end of the hydraulic cylinder 110 retracts, causing the carrier plate 210 and the C-shaped seat 310 to move the pipe fitting downwards to the bending position height, making it easier to bend the other end of the pipe fitting. This achieves automatic switching of the two ends of the pipe fitting for bending separately, which helps to improve the efficiency of bending both ends of the pipe fitting.

[0029] like Figure 4 and Figure 5As shown, in this embodiment, guide rails 250 are fixed at both ends of the carrier plate 210, and sliders 313 are fixed at both ends of the inverted bracket 310, which are respectively slidably engaged with the guide rails 250 at corresponding positions. When the output end of the double-headed cylinder 400 drives the two inverted brackets 310 to move towards each other or away from each other, the sliders 313 slide inside the guide rails 250, so that the inverted brackets 310 can move stably on both sides of the carrier plate 210. When the inverted brackets 310 are away from the carrier plate 210, it is convenient to put the pipe into the gap between the two. When the inverted brackets 310 are close to the carrier plate 210, it is convenient to use rubber wheels to clamp the pipe.

[0030] like Figure 2 and Figure 5 As shown, in this embodiment, a transmission cavity 211 is provided on the inner bottom of both sides of the carrier plate 210. A connecting shaft 212 is fixed in the middle of the rubber wheel 220 and is rotatably connected to the carrier plate 210. The connecting shaft 220 extends into the transmission cavity 211 and a pulley 212 is fixed therein. A synchronous belt 212 is connected between the two pulleys 212.

[0031] In practice, motor 240 drives the connecting shaft at its output end to rotate, thereby causing one connecting shaft to drive the rubber wheel 220 below motor 240 to rotate. The pulley 212 below the connecting shaft rotates, and under the transmission action of the synchronous belt, another pulley 212 inside the transmission cavity 211 drives another connecting shaft to rotate, so that the two connecting shafts can simultaneously drive the two rubber wheels 220 to rotate the conveying pipe.

[0032] In this embodiment, a transmission cavity 311 is provided at the bottom of the C-shaped seat 310, and a connecting shaft 320 is fixed in the middle of the rubber wheel 320 and rotatably connected to the C-shaped seat 310. The connecting shaft 320 extends into the transmission cavity 311 and a pulley 312 is fixed therein. A synchronous belt 312 is connected between the two pulleys 312.

[0033] In specific implementation, motor 2 330 drives the connecting shaft 2 at its output end to rotate, thereby causing the connecting shaft 2 to drive the rubber wheel 2 320 below motor 2 330 to rotate. The pulley 2 312 below the connecting shaft 2 rotates, and under the transmission action of synchronous belt 2, another pulley 2 312 inside the transmission cavity 2 311 drives another connecting shaft 2 to rotate, so that the two connecting shafts 2 can simultaneously drive the two rubber wheels 2 320 to rotate the conveying pipe.

[0034] like Figure 4As shown, in this embodiment, a support plate 340 is fixed to the inner side of the C-shaped seat 310. The support plate 340 slides against the top surface of the carrier plate 210. The support plate 340 covers the gap between the C-shaped seat 310 and the carrier plate 210 and can raise the surface height of the carrier plate 210, so that the pipe placed on the support plate 340 is at the same height as the annular notch on the outside of the rubber wheel. Later, the rubber wheel can directly clamp the pipe to the annular notch position of the rubber wheel. The annular notch helps to improve the stability of the rubber wheel in clamping, fixing or conveying the pipe.

[0035] like Figure 1 As shown, in this embodiment, a geared motor is installed and fixed inside the machine base 100, and a rotating wheel 120 is fixed at the output end of the geared motor. The geared motor is used to drive the rotating wheel 120 to rotate, thereby causing the rotating wheel 120 to drive the entire clamping structure to adjust the bending of different ends of the pipe fitting.

[0036] In this embodiment, after both ends of a pipe are bent, the rotating wheel 120 will rotate 180 degrees with the clamping structure. After the bent pipe is removed, the reduction motor drives the rotating wheel 120 to rotate 180 degrees in the opposite direction, so that the clamping structure can return to the initial position.

[0037] In this embodiment, two fixing rings are fixed on the top surface of the rotating wheel 120. The fixing rings are installed and fixed to the hydraulic cylinder 110 at the corresponding position, so that the hydraulic cylinder 110 can be firmly installed and fixed on the rotating wheel 120.

[0038] like Figure 3 As shown, in this embodiment, a connecting block 314 is fixed on the bottom surface of the C-shaped seat 310. The connecting block 314 is fixed to the corresponding output end of the double-headed cylinder 400, so that the double-headed cylinder 400 can drive the two C-shaped seats 310 to move simultaneously.

[0039] In this utility model, when it is necessary to use the extension of the output end of the hydraulic cylinder 110 to move the positioning clamp 200 and the movable clamp 300 with the bent pipe upward away from the bending machine, the bending die on the existing bending machine can be moved away from the bent pipe first, and then the hydraulic cylinder 110 can be used to drive the pipe upward to prevent the pipe from moving directly upward and interfering with the bending die on the bending machine.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dynamic pipe clamping structure for a pipe bending machine, characterized in that, include: The machine base (100) is fixed at one end of the pipe bending machine, and the top of the machine base (100) has two hydraulic cylinders (110) rotating. A positioning fixture (200) is fixed between the output ends of two hydraulic cylinders (110). The positioning fixture (200) includes a carrier plate (210). Multiple rubber wheels (220) rotate on the top surface of the carrier plate (210). Columns (230) are fixed at both ends of the carrier plate (210). A cover plate (231) is fixed on the top of the two columns (230). Two motors (240) that can drive the corresponding rubber wheels (220) to rotate are fixed on the top surface of the cover plate (231). Two movable clamps (300) are arranged on both sides of the positioning clamp (200). The movable clamp (300) includes an inverted seat (310) that is slidably connected to the carrier plate (210). Rubber wheels (320) are rotatably mounted on both ends inside the inverted seat (310). A motor (330) that can drive the rubber wheels (320) to rotate is fixed on the top surface of the inverted seat (310). A double-headed cylinder (400) is fixed to the bottom surface of the carrier plate (210) and can drive two C-shaped seats (310) to move toward each other or away from each other.

2. The dynamic pipe clamping structure for a pipe bending machine according to claim 1, characterized in that, Both ends of the carrier plate (210) are fixed with guide rails (250), and both ends of the shaped seat (310) are fixed with sliders (313) that are respectively slidably engaged with the guide rails (250) at the corresponding positions.

3. The dynamic pipe clamping structure for a pipe bending machine according to claim 1, characterized in that, The inner bottom of both sides of the carrier plate (210) is provided with a transmission cavity (211). A connecting shaft is fixed in the middle of the rubber wheel (220) and is rotatably connected to the carrier plate (210). The connecting shaft extends into the transmission cavity (211) and a pulley (212) is fixed therein. A synchronous belt is connected between the two pulleys (212).

4. The dynamic pipe clamping structure for a pipe bending machine according to claim 1, characterized in that, The inner bottom of the C-shaped seat (310) is provided with a transmission cavity 2 (311). The middle part of the rubber wheel 2 (320) is fixed with a connecting shaft 2 that is rotatably connected to the C-shaped seat (310). The connecting shaft 2 extends into the interior of the transmission cavity 2 (311) and is fixed with a pulley 2 (312). The two pulleys 2 (312) are connected by a synchronous belt 2.

5. The dynamic pipe clamping structure for a pipe bending machine according to claim 1, characterized in that, A support plate (340) is fixed on the inner side of the shaped base (310), and the support plate (340) slides against the top surface of the carrier plate (210).

6. The dynamic pipe clamping structure for a pipe bending machine according to claim 1, characterized in that, A geared motor is installed and fixed inside the machine (100), and a rotating wheel (120) is fixed at the output end of the geared motor.

7. The dynamic pipe clamping structure for a pipe bending machine according to claim 6, characterized in that, Two fixing rings are fixed on the top surface of the rotary wheel (120), and the fixing rings are installed and fixed to the hydraulic cylinder (110) at the corresponding position.

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