An auxiliary device for bending stainless steel pipes

Abstract

The invention discloses a stainless steel pipe bending processing auxiliary device, which relates to the technical field of bending processing, and comprises a first straightening roller group, a second straightening roller group, a steel pipe conveying roller group, a cutter, a three-dimensional bending component and a straightening cylinder which are arranged in sequence; the straightening cylinder is coaxially arranged with the three-dimensional bending component; the first straightening roller group and the second straightening roller group are arranged perpendicular to each other; the three-dimensional bending component comprises: a base, on which two symmetrically arranged limit rods are fixed; a slide seat, which is slidably arranged on the limit rods and driven by a first telescopic cylinder; a cylinder seat, which is fixed on the slide seat, and a rotating cylinder is rotatably arranged in the cylinder seat; the first bending group and the second bending group are symmetrically arranged in the rotating cylinder, and the first bending group and the second bending group both include a plurality of bending components. Through the mutual cooperation of the first straightening roller group and the second straightening roller group, and the coordination of the three-dimensional bending components, the device can realize three-dimensional bending processing of the steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of bending processing, in particular to a stainless steel pipe bending processing auxiliary device. Background Art

[0002] Stainless steel pipe bending, with its excellent corrosion resistance, high strength and good plasticity, has shown wide application value in many fields such as petrochemical, electric power, aerospace, shipbuilding, etc. However, the current stainless steel pipe bending processing equipment on the market has some flaws in terms of technology and practical application, especially in the flexibility adjustment of the bending shape, the realization of three-dimensional bending technology and the later correction of the bending effect.

[0003] The so-called three-dimensional bending refers to the use of specific process technology and equipment to accurately bend stainless steel pipes that were originally straight or flat into predetermined three-dimensional space curves or complex shapes to meet the needs of various specific application scenarios. Unfortunately, existing bending processing devices generally have the problem of fixed bending shapes and difficult to flexibly adjust. Its bending mold design and process parameters are often customized for specific bending shapes, and once set, they are difficult to change. This results in the device lacking the necessary flexibility and adaptability when facing diverse bending needs, and it is necessary to replace molds or adjust equipment to cope with them, thereby increasing processing costs and reducing production efficiency. What's more tricky is that existing devices seem to be unable to achieve the three-dimensional bending technology. They are mainly suitable for flat bending processing, and are not competent for three-dimensional space curve bending.

[0004] In addition, during the bending process, due to the influence of various factors such as material properties, mold accuracy, process parameters, etc., the bending effect is sometimes poor, such as bending angle deviation, warping or wrinkling. However, it is often difficult to make effective corrections and adjustments to the existing devices after the bending is completed, which further increases the production cost and scrap rate.

[0005] Therefore, it is necessary to provide a stainless steel pipe bending auxiliary device to solve the above problems. Summary of the invention

[0006] To solve the above problems, the present invention provides the following technical solutions: a stainless steel pipe bending processing auxiliary device, comprising a first straightening roller group, a second straightening roller group, a steel pipe conveying roller group, a cutter, a three-dimensional bending component and a straightening cylinder arranged in sequence;

[0007] Wherein, the straightening cylinder is coaxially arranged with the three-dimensional bending assembly;

[0008] The first straightening roller set and the second straightening roller set are arranged perpendicular to each other;

[0009] Wherein, the three-dimensional bending component comprises:

[0010] A base, on which two symmetrically arranged limiting rods are fixed;

[0011] A sliding seat, which is slidably arranged on the limiting rods and is driven by a first telescopic cylinder;

[0012] A cylinder seat, which is fixed on the sliding seat, and a rotating cylinder is rotatably arranged in the cylinder seat;

[0013] A first bending group and a second bending group symmetrically arranged in the rotating cylinder, and both the first bending group and the second bending group include a plurality of bending components.

[0014] Preferably, the bending component includes a second telescopic cylinder and a bending head arranged at the output end of the second telescopic cylinder, and the bending head is a concave roller.

[0015] Preferably, the bending component includes a second telescopic cylinder and a bending head arranged at the output end of the second telescopic cylinder;

[0016] The bending head in the bending component located at the leftmost side is a locking component, and the bending heads located on the right side of the locking component are concave rollers.

[0017] Preferably, the locking component includes:

[0018] A receiving groove, in which a first wedge block is vertically slidably arranged;

[0019] A bolt, which slidably passes through the receiving groove and is threadedly connected to the first wedge block;

[0020] A disc spring, which is installed between the first wedge block and the receiving groove;

[0021] A second wedge block, which cooperates with the first wedge block.

[0022] Preferably, the surface of the second wedge block away from the first wedge block is a V-shaped surface, the surface of the second wedge block close to the first wedge block has a magnetic block, and the first wedge block is made of a magnetic material.

[0023] Preferably, two spacing synchronous adjustment components are arranged in the rotating cylinder for correspondingly adjusting the spacing between a plurality of bending components in the first bending group and the second bending group;

[0024] A visual sensor is further arranged in the rotating cylinder for monitoring the steel pipe after bending, and when the monitoring data does not meet the standard, the spacing between a plurality of bending components is adjusted and the steel pipe is bent again.

[0025] Preferably, the spacing synchronous adjustment component includes a limit groove, on which a plurality of limit blocks corresponding to the bending component are slidably arranged. The upper part of the limit block is connected to the bending component by a first hinge shaft. Two rotating rods are rotatably sleeved outside the first hinge shaft. One end of the rotating rod far from the first hinge shaft is hinged to the adjacent rotating rod by a second hinge shaft;

[0026] The first hinge shaft located at one end is also driven by a third telescopic cylinder.

[0027] Preferably, a central plate is also fixed on the limit groove. Waist-shaped holes are symmetrically opened on the central plate for accommodating the second hinge shaft in the middle.

[0028] Compared with the prior art, the present invention provides an auxiliary device for bending stainless steel pipes, which has the following beneficial effects:

[0029] Through the mutual cooperation of the first straightening roller group and the second straightening roller group, and the coordination of multiple bending components in the three-dimensional bending component, the present invention can realize the three-dimensional bending processing of steel pipes with high precision. Among them, during the three-dimensional bending processing, the rotating cylinder on the cylinder seat starts to rotate, driving the first bending group and the second bending group therein to move to the designated position, so as to realize the three-dimensional bending processing of the steel pipe.

[0030] In this embodiment, the introduction of the visual sensor enables the device to monitor the bending quality in real time, and when a problem is found, it triggers the spacing synchronous adjustment component and the bending component to make adjustments and bend the steel pipe again. This real-time feedback mechanism helps to improve the processing accuracy and stability, and reduce human intervention and errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front view structural schematic diagram of an auxiliary device for bending stainless steel pipes;

[0032] Figure 2 It is a three-dimensional structural schematic diagram of an auxiliary device for bending stainless steel pipes;

[0033] Figure 3 For Figure 2 Partial enlarged structural schematic diagram;

[0034] Figure 4 It is a structural schematic diagram of a bending component in an auxiliary device for bending stainless steel pipes Figure 1 ;

[0035] Figure 5 It is a structural schematic diagram of a bending component in an auxiliary device for bending stainless steel pipes Figure 2 ;

[0036] Figure 6It is a schematic diagram of the main structure of a spacing synchronization adjustment component in a stainless steel pipe bending processing auxiliary device;

[0037] Figure 7 It is a three-dimensional structural schematic diagram of a spacing synchronous adjustment component in a stainless steel pipe bending processing auxiliary device;

[0038] In the figure: 1. first straightening roller group; 2. second straightening roller group; 3. steel pipe conveying roller group; 4. three-dimensional bending assembly; 5. straightening cylinder; 6. steel pipe; 41. base; 42. limit rod; 43. first telescopic cylinder; 44. slide seat; 45. cylinder seat; 46. rotating cylinder; 47. bending assembly; 48. driving assembly; 471. second telescopic cylinder; 472. accommodating groove; 473. first wedge block; 474. disc spring; 475. bolt; 476. second wedge block; 49. limit groove; 410. limit block; 411. rotating rod; 412. second hinge shaft; 413. center plate; 414. waist-shaped hole; 415. third telescopic cylinder. DETAILED DESCRIPTION

[0039] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0040] Example 1: Please refer to Figures 1 - 4 , Figures 6 - 7 In an embodiment of the present invention, a stainless steel pipe bending processing auxiliary device is provided, comprising a first straightening roller group 1, a second straightening roller group 2, a steel pipe conveying roller group 3, a cutter, a three-dimensional bending component 4 and a straightening cylinder 5 which are arranged in sequence;

[0041] Wherein, the straightening cylinder 5 is coaxially arranged with the three-dimensional bending component 4;

[0042] The first straightening roller set 1 and the second straightening roller set 2 are arranged perpendicular to each other;

[0043] Wherein, the three-dimensional bending component 4 includes:

[0044] A base 41 on which two symmetrically arranged limiting rods 42 are fixed;

[0045] A sliding seat 44 is slidably disposed on the limiting rod 42 and driven by the first telescopic cylinder 43;

[0046] A drum seat 45, which is fixed on the slide seat 44, and a rotating drum 46 is rotatably arranged in the drum seat 45;

[0047] The first bending group and the second bending group are symmetrically arranged in the rotating drum 46 , and each of the first bending group and the second bending group includes a plurality of bending components 47 .

[0048] The implementation includes the following steps:

[0049] Step 1: Preliminary straightening: The steel tube 6 first passes through the first straightening roller set 1 for preliminary straightening to ensure that the steel tube 6 has good straightness and flatness before entering the subsequent processing stage. Subsequently, the steel tube 6 is sent to the second straightening roller set 2 for further straightening and positioning. In this step, the two straightening roller sets (the first straightening roller set 1 and the second straightening roller set 2) are arranged perpendicular to each other, which helps to eliminate the bending and twisting of the steel tube 6 in multiple directions.

[0050] Step 2: Conveying and cutting. The straightened steel pipe 6 is smoothly conveyed to the cutter (not shown) by the steel pipe conveying roller group 3. The cutter accurately cuts the steel pipe 6 according to the processing requirements to ensure that the length and end surface quality of each section of the steel pipe 6 meet the requirements of the subsequent bending process. Before cutting, one end of the steel pipe 6 is conveyed through the three-dimensional bending assembly 4 and straightened by the straightening cylinder 5.

[0051] Step 3: Three-dimensional bending, the cut steel pipe 6 enters the core area of ​​the three-dimensional bending assembly 4. Driven by the first telescopic cylinder 43, the slide 44 slides to a predetermined position along the limit rod 42. At this time, the rotating cylinder 46 on the cylinder seat 45 starts to rotate, driving the first bending group and the second bending group therein to move to the designated position, thus realizing the three-dimensional bending process of the steel pipe 6 (described in detail below).

[0052] Step 4: Output after bending. After the bending process is completed, the steel pipe 6 can be taken out manually.

[0053] In this embodiment, through the mutual cooperation of the first straightening roller group 1 and the second straightening roller group 2, and the coordination of multiple bending components 47 in the three-dimensional bending component 4, the device can achieve high-precision three-dimensional bending processing of the steel pipe 6.

[0054] In addition, the provision of the straightening cylinder 5 helps to maintain the posture of the steel pipe 6 before bending. At the same time, the coordination of multiple bending components 47 also ensures the accuracy of the bending angle and shape, thereby improving the quality and consistency of the product.

[0055] A driving assembly 48 is fixed to the bottom of the slide seat 44 for driving the rotating drum 46 to rotate.

[0056] The driving assembly 48 can be a combination of a friction wheel and a motor. In this form, the friction wheel directly contacts the outer peripheral side of the rotating cylinder 46 and transmits power through friction, while the motor directly drives the friction wheel to rotate.

[0057] The driving assembly 48 can be a combination of a synchronous pulley, a belt, and a motor. In this form, the motor drives the synchronous pulley to rotate, and the synchronous pulley then drives the rotating cylinder 46 to rotate through the belt.

[0058] During implementation, the rotating cylinder 46 starts to rotate under the action of the driving assembly 48 and drives the first bending group and the second bending group therein to work synchronously. Through precise coordinated actions, these two bending groups perform three-dimensional bending processing on the steel pipe 6 entering therein.

[0059] In this embodiment, the bending assembly 47 includes a second telescopic cylinder 471 and a bending head disposed at the output end of the second telescopic cylinder 471. The bending head is a concave roller. Therefore, in step three, when the rotating cylinder 46 on the cylinder base 45 starts to rotate, driving the first bending group and the second bending group therein to move to the designated position, at this time, the second telescopic cylinder 471 in the bending assembly 47 performs telescopic adjustment. During this process, the bending head drives the steel pipe 6 to deform, thereby realizing three-dimensional bending processing of the steel pipe 6.

[0060] In this embodiment, two spacing synchronous adjustment components are provided in the rotating cylinder 46 for correspondingly adjusting the spacing between multiple bending assemblies 47 in the first bending group and the second bending group;

[0061] A visual sensor is also provided in the rotating cylinder 46 for monitoring the bent steel pipe 6, and when the monitoring data does not meet the standard, the spacing between multiple bending assemblies 47 is adjusted and the steel pipe 6 is bent again.

[0062] Among them, the visual sensor generally includes parts such as a camera, an image processor, and a comparison algorithm. After the camera captures an image of the steel pipe 6, the image processor processes and analyzes the image, extracts key feature information. Then, this information is compared with a preset standard to determine whether the bending meets the requirements. If it does not meet the standard, the visual sensor will send a signal to trigger the adjustment of the spacing synchronous adjustment component and the bending assembly 47 to bend the steel pipe 6 again.

[0063] In this embodiment, the introduction of the visual sensor enables the device to monitor the bending quality in real time and make adjustments immediately when problems are found. This real-time feedback mechanism helps to improve the processing accuracy and stability, reduce human intervention and errors. In addition, the visual sensor can also be used to record and analyze the data during the processing, providing a basis for optimizing process parameters and improving equipment design.

[0064] In fact, the first bending group and the second bending group are equivalent to a mold for constructing a bend. The shape of this mold remains unchanged during the processing, but by adjusting the spacing between the bending components, the position of the force application point can be changed, thereby achieving fine-tuning of the bending effect. This design not only ensures the stability of the processing but also improves the flexibility.

[0065] Specifically, the spacing synchronous adjustment component includes a limit groove 49, on which a plurality of limit blocks 410 corresponding to the bending components 47 are slidably arranged. Above the limit blocks 410, the bending components 47 are connected by a first hinge shaft. The outer part of the first hinge shaft is rotatably sleeved with two rotating rods 411, and the ends of the rotating rods 411 away from the first hinge shaft are hinged to adjacent rotating rods 411 through a second hinge shaft 412;

[0066] The first hinge shaft located at one end is also driven by a third telescopic cylinder 415.

[0067] In addition, a central plate 413 is fixed on the limit groove 49, and waist-shaped holes 414 are symmetrically opened on the central plate 413 for accommodating the second hinge shaft 412 in the middle.

[0068] Among them, the limit groove 49 is the basis of the spacing synchronous adjustment component, which provides a stable sliding track for installing and supporting the limit blocks 410. The limit blocks 410 are slidably arranged on the limit groove 49 and are connected to the bending components 47 through a first hinge shaft. The main function of the limit blocks 410 is to limit the movement range of the bending components 47 and change the spacing between the bending components 47 by adjusting their positions in the limit groove 49.

[0069] Among them, the rotating rods 411 are rotatably sleeved on the outer part of the first hinge shaft and are hinged to adjacent rotating rods 411 through the second hinge shaft 412. This structure forms a linkage mechanism. When the first hinge shaft at one end is driven, the entire linkage mechanism can be driven to move synchronously, thereby realizing the adjustment of the spacing between the bending components 47.

[0070] Therefore, when it is necessary to adjust the spacing between the bending components 47, the third telescopic cylinder 415 starts to work, pushing the first hinge shaft at one end to move. Since the rotating rods 411 are rotatably sleeved on the outer part of the first hinge shaft and are hinged to adjacent rotating rods 411 through the second hinge shaft 412. This structure forms a linkage mechanism, so this movement will be converted into a synchronous spacing adjustment between the bending components 47. At the same time, the sliding of the limit blocks 410 in the limit groove 49 also ensures the accuracy and stability of this adjustment.

[0071] Embodiment 2: Please refer to Figure 5, which is different from the first embodiment. In this embodiment, the bending assembly includes a second telescopic cylinder 471 and a bending head disposed at the output end of the second telescopic cylinder 471. Therefore, in step three, when the rotating cylinder 46 on the cylinder base 45 starts to rotate, driving the first bending group and the second bending group therein to move to the designated position, at this time, the second telescopic cylinder 471 in the bending assembly 47 performs telescopic adjustment. During this process, the bending head drives the steel pipe 6 to deform, thereby realizing the three-dimensional bending processing of the steel pipe 6;

[0072] The bending head in the bending assembly located on the far left is a locking assembly, and the bending head located on the right side of the locking assembly is a concave roller.

[0073] The locking assembly can better lock the steel pipe 6. The locking assembly has a strong clamping force and a stable structure to ensure the stability and accuracy of the steel pipe during the bending process.

[0074] And the bending head located on the right side of the locking assembly is a concave roller. This ensures that the steel pipe 6 can feed normally when bending the steel pipe 6.

[0075] During the bending process, the locking assembly first fixes one side of the steel pipe 6, and the other side is positioned by the concave roller and allowed to feed. As the steel pipe 6 feeds, the concave roller gradually displaces under the drive of the second telescopic cylinder 471 and applies pressure to the steel pipe 6 to bend it. Since the steel pipe 6 is continuously affected by the concave roller during the feeding process, the required bending angle and shape can be gradually achieved.

[0076] It should be noted that during the bending process, it is necessary to pay attention to controlling the feeding speed of the steel pipe and the pressure of the concave roller to ensure the accuracy and stability of the bending and obtain the best bending effect.

[0077] Among them, the locking assembly includes:

[0078] A receiving groove 472, inside which a first wedge block 473 is vertically slidably arranged;

[0079] A bolt 475, which slidably passes through the receiving groove 472 and is threadedly connected to the first wedge block 473;

[0080] A disc spring 474, which is installed between the first wedge block 473 and the receiving groove 472;

[0081] A second wedge block 476, which cooperates with the first wedge block 473.

[0082] In this embodiment, locking is achieved through a wedge fit. Different from the conventional wedge fit method, in this embodiment, a bolt 475 and a disc spring 474 are also provided. By setting the disc spring 474, a pre-tightening force can be provided for the first wedge block 473, and by setting the bolt 475, the first wedge block 473 can be restricted to prevent it from falling out of the accommodating groove 472. Moreover, when the second wedge block 476 moves and presses the first wedge block 473, the reaction force of the first wedge block 473 on the second wedge block 476 is high, ensuring the clamping effect.

[0083] Further, one side of the second wedge block 476 away from the first wedge block 473 is a V-shaped surface, one side of the second wedge block 476 close to the first wedge block 473 has a magnetic block, and the first wedge block 473 is made of a magnetic material.

[0084] The purpose of setting the V-shaped surface is to adapt to steel pipes 6 with different diameters. One side of the second wedge block 476 close to the first wedge block 473 has a magnetic block, and the first wedge block 473 is made of a magnetic material. In this way, the second wedge block 476 can be adsorbed on the first wedge block 473 and will not fall off randomly.

[0085] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A stainless steel pipe bending auxiliary device, characterized in that: It comprises a first straightening roller group (1), a second straightening roller group (2), a steel pipe conveying roller group (3), a cutter, a three-dimensional bending component (4) and a straightening cylinder (5) which are arranged in sequence; Wherein, the straightening cylinder (5) and the three-dimensional bending component (4) are coaxially arranged; The first straightening roller set (1) and the second straightening roller set (2) are arranged perpendicular to each other; Wherein, the three-dimensional bending component (4) comprises: A base (41) on which two symmetrically arranged limiting rods (42) are fixed; A sliding seat (44) is slidably disposed on the limiting rod (42) and driven by the first telescopic cylinder (43); A cylinder seat (45) is fixed on the slide seat (44), and a rotating cylinder (46) is rotatably arranged in the cylinder seat (45); A first bending group and a second bending group symmetrically arranged in the rotating drum (46), wherein the first bending group and the second bending group each include a plurality of bending components (47); The bending assembly (47) comprises a second telescopic cylinder (471) and a bending head arranged at the output end of the second telescopic cylinder (471), wherein the bending head is a concave roller; Alternatively, the bending head in the bending assembly (47) located on the far left is a locking assembly, and the bending head located on the right side of the locking assembly is a concave roller; The locking assembly comprises: The receiving groove (472) has a first wedge (473) disposed therein for vertical sliding movement; a bolt (475) which slides through the receiving groove (472) and is threadedly connected to the first wedge block (473); a disc spring (474) installed between the first wedge block (473) and the receiving groove (472); A second wedge block (476) matched with the first wedge block (473); The rotating drum (46) is provided with two synchronous spacing adjustment components for correspondingly adjusting the spacing between the plurality of bending components (47) in the first bending group and the second bending group; The rotating drum (46) is also provided with a visual sensor for monitoring the bent steel pipe (6), and when the monitoring data does not meet the standard, the spacing between the plurality of bending components (47) is adjusted and the steel pipe (6) is bent again.

2. A stainless steel pipe bending auxiliary device according to claim 1, characterized in that: The side of the second wedge block (476) away from the first wedge block (473) is a V-shaped surface, and the side of the second wedge block (476) close to the first wedge block (473) has a magnetic block, and the first wedge block (473) is made of magnetic material.

3. A stainless steel pipe bending auxiliary device according to claim 1, characterized in that: The spacing synchronous adjustment component comprises a limit groove (49), on which a plurality of limit blocks (410) corresponding to the bending component (47) are slidably arranged, the upper part of the limit block (410) is connected to the bending component (47) by a first hinge shaft, the outer rotating sleeve of the first hinge shaft is provided with two rotating rods (411), and one end of the rotating rod (411) away from the first hinge shaft is hinged to the adjacent rotating rod (411) through a second hinge shaft (412); The first hinge shaft located at one end is also driven by a third telescopic cylinder (415).

4. A stainless steel pipe bending auxiliary device according to claim 3, characterized in that: A center plate (413) is also fixed on the limiting groove (49), and waist-shaped holes (414) are symmetrically provided on the center plate (413) for accommodating the second hinge shaft (412) in the middle.

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