Bending equipment for pipe fitting machining

Abstract

The utility model relates to the related technical field of pipe fitting processing, in particular to bending equipment for pipe fitting processing, which comprises a workbench, a connecting seat is connected above the workbench, a lower die is connected above the connecting seat, a buffer device is arranged between the workbench and the lower die, and the buffer device is connected with the lower die. And pressure conveying mechanisms are arranged on the surfaces of the connecting seat and the bracket. According to the bending equipment for pipe fitting machining, due to the arrangement of the buffer device, many defects caused by rigid contact of traditional equipment are overcome, the machining quality and the equipment reliability are remarkably improved, after bending is completed, the elastic reset force of the spring can further push the lower die to slowly rise, return stroke inertial impact is reduced, and the machining efficiency is improved. The surface quality and the size precision of the pipe fitting are protected, the service life of the die and the service life of equipment are prolonged, the safety risk of operators is reduced, and reliable guarantee is provided for efficient and stable pipe fitting bending operation.

Description

A bending device for pipe fitting processing Technical Field

[0001] This utility model relates to the field of pipe fitting processing technology, and in particular to a bending device for pipe fitting processing. Background Technology

[0002] Pipe fitting processing refers to the manufacturing process of changing the shape, size, performance, or surface condition of pipes through various technological means to meet the needs of specific projects or products. Its core is to transform pipes from their original state into parts or finished products with specific functions through physical or chemical methods. Some pipe fittings need to be bent during the processing, so there is a special need for bending equipment for pipe fitting processing.

[0003] However, in traditional pipe bending equipment, the pipe is in direct rigid contact with the mold and transmission components during the bending process. There is no buffer device to absorb the impact force. When the equipment drives the mold to quickly squeeze the pipe, the instantaneous huge pressure will leave obvious indentations and scratches on the surface of the pipe, and may even cause local deformation or cracking of the pipe. For some metal pipes with high surface quality requirements, this damage directly scraps the product and increases production costs. Summary of the Invention

[0004] The purpose of this utility model is to provide a bending device for pipe processing, which has a buffer device at the bottom of the lower mold, thus solving the problem that traditional bending equipment is prone to damaging pipes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bending device for pipe processing, comprising a worktable, pulleys installed at the bottom of the worktable, a connecting seat connected above the worktable, a lower mold connected above the connecting seat, a support connected to the side of the worktable, a pipe placed above the lower mold, a buffer device provided between the worktable and the lower mold, and a pressure conveying mechanism provided on the surface of both the connecting seat and the support.

[0006] The buffer device includes a buffer groove, an inner guide groove, a guide block connected to the side of the lower mold, a sleeve connected to the bottom of the lower mold, a limit groove inside the sleeve, a sliding groove on the side of the limit groove, a limit plate slidably connected inside the limit groove, a slider connected to the side of the limit plate, a telescopic spring connected above the limit plate, a support rod connected below the limit plate, a washer connected to the bottom of the support rod, and a return spring connected inside the buffer groove.

[0007] Preferably, the bottom of the workbench is provided with multiple sets of pulleys, and the pulleys in each set are distributed at equal intervals.

[0008] Preferably, the lower mold slides inside the buffer groove via a guide block and a guide groove, and the outer wall size of the guide block matches the inner wall size of the guide groove.

[0009] Preferably, the limiting plate slides up and down inside the limiting groove via a slider, and the diameter of the slider and the groove are precisely matched.

[0010] Preferably, multiple sets of sleeves are provided inside the buffer groove, and multiple sets of return springs are distributed at equal intervals inside the buffer groove.

[0011] Preferably, the pressure conveying mechanism includes a hydraulic cylinder, a hydraulic rod connected to the bottom of the hydraulic cylinder, a lower pressure plate connected to the bottom of the hydraulic rod, a bending plate connected to the bottom of the lower pressure plate, a fixed seat connected above the connecting seat, a drive motor connected to one side of the fixed seat, a rotating shaft connected to the output end of the drive motor, and a conveying roller connected to the surface of the rotating shaft.

[0012] Preferably, the rotating shaft is configured to rotate by means of a drive motor and a conveying roller, and the conveying rollers are distributed in multiple sets at equal intervals on the surface of the rotating shaft, with each set of conveying rollers in contact with the pipe fitting.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This bending equipment for pipe fitting processing solves many drawbacks caused by rigid contact in traditional equipment by setting a buffer device, significantly improving processing quality and equipment reliability. When the bending plate presses down on the pipe fitting, the lower die no longer directly bears the impact, but moves vertically down along the buffer groove through the precise cooperation of the guide block and the guide groove, ensuring a stable motion trajectory. Under the constraint of the slider and the slide groove, the limiting plate in the sleeve drives the telescopic spring and the return spring to absorb the impact force step by step, forming a dual shock absorption effect of "initial buffer-strong buffer". After bending, the elastic return force of the spring can also push the lower die to slowly rise, reducing the impact of return inertia. This not only protects the surface quality and dimensional accuracy of the pipe fitting and extends the service life of the mold and equipment, but also reduces the safety risks for operators, providing a reliable guarantee for efficient and stable pipe fitting bending operations. Attached Figure Description

[0014] Figure 1 is a side view of the appearance structure of this utility model;

[0015] Figure 2 is a schematic diagram of the buffer device structure of this utility model;

[0016] Figure 3 is a schematic diagram of the pressure conveying mechanism of this utility model;

[0017] Figure 4 is an enlarged structural schematic diagram of point A in Figure 2 of this utility model.

[0018] In the diagram: 1. Workbench; 2. Pulley; 3. Connecting seat; 4. Lower mold; 5. Support; 6. Pipe fitting; 7. Buffer device; 701. Buffer groove; 702. Guide groove; 703. Guide block; 704. Sleeve; 705. Limiting groove; 706. Slide groove; 707. Limiting plate; 708. Slider; 709. Telescopic spring; 710. Support rod; 711. Shim; 712. Return spring; 8. Pressure conveying mechanism; 801. Hydraulic cylinder; 802. Hydraulic rod; 803. Lower pressure plate; 804. Bending plate; 805. Fixed seat; 806. Drive motor; 807. Rotating shaft; 808. Conveying roller. Detailed Implementation

[0019] 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.

[0020] Please refer to Figures 1-4. This utility model provides a technical solution: a bending device for pipe processing, including a workbench 1, a pulley 2 installed at the bottom of the workbench 1, a connecting seat 3 connected above the workbench 1, a lower mold 4 connected above the connecting seat 3, a support 5 connected to the side of the workbench 1, a pipe 6 placed above the lower mold 4, a buffer device 7 provided between the workbench 1 and the lower mold 4, and a pressure conveying mechanism 8 provided on the surface of both the connecting seat 3 and the support 5.

[0021] The buffer device 7 includes a buffer groove 701, a guide groove 702 on the inner side of the buffer groove 701, a guide block 703 connected to the side of the lower mold 4, a sleeve 704 connected to the bottom of the lower mold 4, a limit groove 705 inside the sleeve 704, a sliding groove 706 on the side of the limit groove 705, a limit plate 707 slidably connected inside the limit groove 705, a slider 708 connected to the side of the limit plate 707, a telescopic spring 709 connected above the limit plate 707, a support rod 710 connected below the limit plate 707, a gasket 711 connected to the bottom of the support rod 710, and a return spring 712 connected inside the buffer groove 701. The buffer device... With setting 7, when the pipe fitting 6 is pressed downwards by the bending device against the lower die 4, the lower die 4 is forced to slide the guide block 703 downwards within the guide groove 702, ensuring the stability and straightness of the lower die 4's movement and preventing deviation. Simultaneously, the sleeve 704 at the bottom of the lower die 4 moves downwards, and the limiting plate 707 inside the sleeve 704 begins to function as a buffer. The sliders 708 on both sides of the limiting plate 707 slide against the slide groove 706, restricting its rotational freedom and allowing it to move only vertically within the limiting groove 705. As the lower die 4 continues to press down, the telescopic spring 709 above the limiting plate 707 is compressed, absorbing the stress generated during pipe bending through elastic deformation. The impact force is partially absorbed, slowing down the descent speed of the lower mold 4. Simultaneously, the support rod 710 and pad 711 below the limit plate 707 transmit the force to the return spring 712 at the bottom of the buffer groove 701. The return spring 712 is also compressed, further absorbing and dispersing the remaining impact force. Throughout the bending process, the telescopic spring 709 and the return spring 712 form a double buffer structure. The telescopic spring 709 mainly buffers the instantaneous impact when the lower mold 4 is initially subjected to force, while the return spring 712 provides greater buffering resistance when the pipe continues to bend and the lower mold 4 approaches its limit position, preventing a rigid collision between the lower mold 4 and the worktable 1. When the bending action is completed, the external force is removed. Afterwards, the return spring 712 and the extension spring 709 begin to recover their deformation. The return spring 712 pushes the pad 711 and the support rod 710 upwards, causing the limit plate 707 to rise. The extension spring 709 also pushes the limit plate 707 upwards, causing the lower mold 4 to slowly return to its original position. During this process, the guide block 703 slides upwards in the guide groove 702, ensuring that the lower mold 4 returns to its initial position smoothly, preparing for the next bending operation. The entire buffer device 7 effectively reduces the impact force during the bending process of the pipe fitting through the precise cooperation of the spring compression and return and the guide and limit structure, protecting the surface quality of the pipe fitting and the equipment components, while improving the stability and safety of the bending operation.

[0022] Furthermore, the bottom of the workbench 1 is equipped with multiple sets of pulleys 2, with each set of pulleys 2 evenly spaced. The pulleys 2 significantly improve the mobility and workstation adjustment efficiency of the bending equipment. The evenly spaced pulleys 2 allow the workbench 1 to slide easily on the ground. Operators can quickly move the equipment to different processing areas or workstations according to the production process requirements without the need for additional lifting equipment, greatly reducing the labor and time costs of equipment handling. At the same time, the stable support of the pulleys 2 ensures that the workbench 1 remains balanced during movement, preventing the equipment from tilting or tipping over due to a shift in the center of gravity. Especially in assembly line operations that require frequent adjustments to the processing position, this design can significantly improve the smoothness of the production cycle and meet the high requirements of modern manufacturing for equipment mobility.

[0023] Furthermore, the lower mold 4 slides inside the buffer groove 701 via the guide block 703 and guide groove 702. The outer wall dimension of the guide block 703 matches the inner wall dimension of the guide groove 702. Through the arrangement of the buffer groove 701, guide groove 702, and guide block 703, a precise guiding and stable buffering system for the movement of the lower mold 4 is constructed. The precise matching of the inner wall dimension of the guide block 703 and the guide groove 702 is like the cooperation of "track and slider", which strictly limits the movement trajectory of the lower mold 4 in the buffer groove 701, so that it can only slide up and down in the vertical direction, eliminating the possibility of lateral deviation or swaying. This precise guidance not only ensures that the pipe 6 is subjected to uniform force during bending, avoiding bending angle deviation caused by mold offset, but also allows the telescopic spring 709 and the return spring 712 to be subjected to uniform force, giving full play to the buffering and shock absorption effect. At the same time, the buffer groove 701 provides a stable movement space for the lower mold 4. With the help of the guiding structure, the entire buffering process is smooth and controllable, effectively improving the bending accuracy of the pipe and the reliability of equipment operation.

[0024] Furthermore, the limiting plate 707 slides up and down inside the limiting groove 705 via the slider 708 and the slide groove 706. The diameter of the slider 708 and the slide groove 706 are precisely matched. The setting of the slide groove 706 and the slider 708 provides reliable limiting and guiding guarantee for the vertical movement of the limiting plate 707. The precisely matched slider 708 and the slide groove 706 restrict the rotational freedom of the limiting plate 707, so that it can only slide in the vertical direction within the limiting groove 705. This ensures that the elastic force of the telescopic spring 709 can be evenly transmitted in the vertical direction, avoiding the failure of the spring due to uneven force caused by the tilt of the limiting plate 707. During the impact of the pipe bending, this structure can prevent the limiting plate 707 from lateral displacement, ensuring the stability and directionality of the buffer force, thereby effectively absorbing and dispersing the impact force and protecting the surface of the pipe from damage. At the same time, the smooth sliding fit also reduces mechanical wear and extends the service life of the buffer device 7.

[0025] Furthermore, multiple sets of sleeves 704 are arranged inside the buffer groove 701, and multiple sets of return springs 712 are equally distributed inside the buffer groove 701. Through the arrangement of sleeves 704 and return springs 712, a high-efficiency shock absorption system with multiple buffers and uniform force distribution is constructed. Multiple sets of sleeves 704 are evenly distributed in the buffer groove 701, corresponding one-to-one with the equally distributed return springs 712, forming a multi-point support buffer structure. When the pipe 6 is bent, the lower die 4 simultaneously squeezes multiple sets of return springs 712 through the sleeves 704, so that the impact force is distributed to multiple buffer points, avoiding excessive force at a single point that could cause spring overload failure. This distributed buffer design not only improves the load-bearing capacity of the buffer device 7, but also makes the force on the lower die 4 more uniform through the coordinated deformation of the springs, reducing pipe deformation or equipment damage caused by local stress concentration. In addition, the cooperation of multiple sets of sleeves 704 and return springs 712 can also provide gradient buffer force at different stages of pipe bending, further optimizing the buffer effect and ensuring a smooth and safe bending process.

[0026] Furthermore, the pressure conveying mechanism 8 includes a hydraulic cylinder 801, a hydraulic rod 802 connected to the bottom of the hydraulic cylinder 801, a lower pressure plate 803 connected to the bottom of the hydraulic rod 802, a bending plate 804 connected to the bottom of the lower pressure plate 803, a fixed seat 805 connected above the connecting seat 3, a drive motor 806 connected to one side of the fixed seat 805, a rotating shaft 807 connected to the output end of the drive motor 806, and a conveying roller 808 connected to the surface of the rotating shaft 807. Through the configuration of the pressure conveying mechanism 8, when the pipe fitting 6 needs to be bent, the hydraulic cylinder 801 is activated. The hydraulic system inside the hydraulic cylinder 801 drives the hydraulic rod 802 to extend downwards, causing the lower pressure plate 803 and the bottom bending plate 804 to descend synchronously. The shape of the bending plate 804 is adapted to the bending requirements of the pipe fitting 6. After it contacts the pipe fitting 6, the continuous pressure from the hydraulic rod 802 gradually presses the pipe fitting 6 into the groove of the lower mold 4, completing the bending action. The advantage of the hydraulic system is that the bending force can be precisely controlled by adjusting the oil pressure, avoiding the deformation or breakage of the pipe fitting caused by excessive impact force in traditional mechanical pressure. For example, for thin-walled pipe fittings or high-hardness materials, "flexible bending" can be achieved by reducing the oil pressure, ensuring the surface quality and dimensional accuracy of the pipe fitting. Before or during the bending of the pipe fitting 6, the drive motor 806 is started, driving the rotating shaft 807 and the conveying rollers 808 on the surface to rotate. The conveying rollers 808 are usually in multiple sets, and their surfaces are designed with anti-slip textures or rubber layers. Friction drives the pipe 6 to move smoothly along the length of the workbench 1. In the initial stage, the conveying roller 808 can accurately convey the pipe 6 to the top of the lower mold 4. By controlling the number of rotations of the drive motor 806, the bending position of the pipe 6 is precisely adjusted to ensure that the bending angle is consistent with the design. For multi-section bending of long pipes, the conveying roller 808 can continue to convey the pipe 6 to the next bending point after completing one section of bending, realizing continuous operation and greatly improving processing efficiency. The drive motor 806 starts first, and the conveying roller 808 conveys the pipe 6 to the designated position of the lower mold 4. After the operator or sensor confirms that the positioning is correct, the hydraulic cylinder 801 starts, and the bending plate 804 presses down on the pipe 6. At this time, the spring structure of the buffer device 7 presses down synchronously. The hydraulic system absorbs impact and provides uniform support, ensuring a smooth bending process. After bending, the hydraulic cylinder 801 drives the hydraulic rod 802 to retract, the bending plate 804 resets, the drive motor 806 restarts, and the conveying roller 808 transports the pipe 6 to the next workstation or unloading position, completing a single processing cycle. The hydraulic system can adjust the bending force in real time to adapt to pipes of different materials and wall thicknesses, avoiding defects caused by rigid extrusion. The cooperation between the drive motor and the conveying roller enables precise control of the pipe position, making it particularly suitable for multi-segment bending or complex shape processing. The pressure application and pipe conveying are synchronized and coordinated, reducing manual intervention, improving the degree of automation, and making it suitable for mass production scenarios. This significantly improves the quality, efficiency, and safety of pipe processing.

[0027] Furthermore, the rotating shaft 807, through the interaction of the drive motor 806 and the conveying rollers 808, forms a rotating structure. Multiple sets of conveying rollers 808 are evenly distributed on the surface of the rotating shaft 807, and each set of conveying rollers 808 is in contact with the pipe fitting 6. This arrangement of the conveying rollers 808 constructs a highly efficient and stable pipe fitting conveying system, significantly improving the automation and accuracy of pipe fitting bending processing. The multiple sets of conveying rollers 808 evenly distributed on the surface of the rotating shaft 807 can fully contact the outer surface of the pipe fitting 6, forming a uniform and stable frictional force. This ensures that the pipe fitting will not slip, deviate, or experience uneven rolling during conveying. This close-fitting design not only effectively drives the pipe fitting 6 forward smoothly but also provides auxiliary support to the pipe fitting during conveying. The positioning function ensures that the pipe 6 always moves along the preset path and accurately reaches the bending station of the lower mold 4. In actual processing, multiple sets of conveyor rollers 808 work together to disperse the pressure on the pipe and avoid damage to the surface of the pipe due to excessive force at a single point. This is especially suitable for thin-walled or easily deformable pipes. At the same time, by controlling the speed and direction of the drive motor 806, the conveying speed and direction of the pipe 6 can be flexibly adjusted to achieve continuous conveying, precise positioning, and orderly connection of multiple bends. Whether it is the efficient processing of a single pipe or the continuous operation of batch production, the conveyor rollers 808 can ensure that the pipe enters the bending process in a stable posture, greatly reducing the manual adjustment time, improving the overall processing efficiency and product qualification rate, and providing a reliable conveying guarantee for pipe bending processing.

[0028] Working Principle: Based on the processing requirements of the pipe fitting 6, the operator first uses the evenly spaced pulleys 2 at the bottom of the workbench 1 to quickly move the equipment to a suitable work position. Once at the designated position, the operator controls the drive motor 806 to cause the rotating shaft 807 to drive the evenly spaced conveyor rollers 808 on the surface to rotate, smoothly conveying the pipe fitting 6 above the lower mold 4. The conveyor rollers 808 are in close contact with the pipe fitting 6, and the uniform friction generated by the surface anti-slip texture or rubber layer ensures that the pipe fitting 6 moves precisely along the preset path. Simultaneously, by controlling the number of rotations of the drive motor 806, the operator precisely adjusts the bending position of the pipe fitting 6. After the pipe fitting 6 is positioned... The hydraulic cylinder 801 is activated, and the hydraulic system drives the hydraulic rod 802 to extend downward, causing the lower pressure plate 803 and bending plate 804 to descend. When the bending plate 804 contacts the pipe fitting 6, it continuously applies pressure, gradually pressing the pipe fitting 6 down into the lower mold 4. During this process, the buffer device 7 plays a crucial role: the lower mold 4 is forced to guide the guide block 703 to slide vertically within the guide groove 702, ensuring stable movement. The limiting plate 707 inside the sleeve 704 moves vertically along the limiting groove 705 under the guidance of the slider 708 and the slide groove 706. The upper telescopic spring 709 and the lower return spring 712 are compressed in sequence, forming a double buffer. Multiple sets of sleeves 7 The multi-point buffer structure formed by 04 and the return spring 712 evenly distributes the impact force, preventing the pipe fitting 6 from deforming due to uneven force or damage to equipment parts, ensuring a smooth and precise bending process. After the bending action is completed, the hydraulic cylinder 801 drives the hydraulic rod 802 to retract, driving the bending plate 804 to return to its original position. At the same time, the return spring 712 and the extension spring 709 in the buffer device 7 restore their deformation, pushing the lower mold 4 to slowly rise back to its initial position with the cooperation of the guide block 703 and the guide groove 702. Subsequently, the drive motor 806 starts again, and the conveyor roller 808 transports the bent pipe fitting 6 to the next station or unloading position. If pipe alignment is required... The pipe fitting 6 undergoes multiple bends, and the conveying roller 808 can repeatedly convey the pipe fitting 6 to different bending points. In conjunction with the pressure conveying mechanism 8, continuous processing is completed. The entire device achieves flexible scheduling of the equipment through the pulley 2, and uses the pressure conveying mechanism 8 to complete the precise conveying and controllable pressure of the pipe fitting 6. The buffer device 7 ensures the stability and safety of the bending process. The coordinated work of all components significantly improves the automation level, production efficiency and product quality of pipe fitting processing, reduces manual intervention and processing errors, and meets the high precision and high efficiency requirements of modern manufacturing for pipe fitting processing. This completes the usage process of a bending equipment for pipe fitting processing.

[0029] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending device for pipe fitting processing, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is equipped with pulleys (2), the top of the workbench (1) is connected to a connecting seat (3), the top of the connecting seat (3) is connected to a lower mold (4), the side of the workbench (1) is connected to a bracket (5), a pipe fitting (6) is placed on top of the lower mold (4), a buffer device (7) is provided between the workbench (1) and the lower mold (4), and pressure conveying mechanisms (8) are provided on the surfaces of the connecting seat (3) and the bracket (5); the buffer device (7) includes a buffer groove (701), the inner side of the buffer groove (701) is provided with a guide groove (702), and the side of the lower mold (4) is connected to a guide block ( ). 703), the bottom of the lower mold (4) is connected to a sleeve (704), the sleeve (704) has a limiting groove (705) inside, the limiting groove (705) has a sliding groove (706) on the side, the limiting groove (705) has a limiting plate (707) slidably connected inside, the limiting plate (707) has a slider (708) connected to the side, the limiting plate (707) has a telescopic spring (709) connected above, the limiting plate (707) has a support rod (710) connected below, the support rod (710) has a gasket (711) connected to the bottom, and the buffer groove (701) has a return spring (712) connected inside.

2. The bending equipment for pipe fitting processing according to claim 1, characterized in that: The bottom of the workbench (1) is provided with multiple sets of pulleys (2), and each set of pulleys (2) is distributed at equal intervals.

3. The bending equipment for pipe fitting processing according to claim 1, characterized in that: The lower mold (4) slides inside the buffer groove (701) via the guide block (703) and the guide groove (702), and the outer wall size of the guide block (703) matches the inner wall size of the guide groove (702).

4. The bending equipment for pipe fitting processing according to claim 1, characterized in that: The limiting plate (707) slides up and down inside the limiting groove (705) via the slider (708) and the slide groove (706), and the diameter of the slider (708) and the slide groove (706) are precisely matched.

5. A bending device for pipe fitting processing according to claim 1, characterized in that: Multiple sets of sleeves (704) are provided inside the buffer groove (701), and multiple sets of return springs (712) are distributed at equal intervals inside the buffer groove (701).

6. A bending device for pipe fitting processing according to claim 1, characterized in that: The pressure conveying mechanism (8) includes a hydraulic cylinder (801), a hydraulic rod (802) connected to the bottom of the hydraulic cylinder (801), a lower pressure plate (803) connected to the bottom of the hydraulic rod (802), a bending plate (804) connected to the bottom of the lower pressure plate (803), a fixed seat (805) connected above the connecting seat (3), a drive motor (806) connected to one side of the fixed seat (805), a rotating shaft (807) connected to the output end of the drive motor (806), and a conveying roller (808) connected to the surface of the rotating shaft (807).

7. A bending device for pipe fitting processing according to claim 6, characterized in that: The rotating shaft (807) is connected to the conveying roller (808) by a drive motor (806) to form a rotating structure. The conveying roller (808) is distributed in multiple sets at equal intervals on the surface of the rotating shaft (807), and each set of conveying roller (808) is in contact with the pipe (6).

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