Stainless steel pipe bending auxiliary device

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 assembly and a centralizing cylinder which are arranged in sequence, the centralizing cylinder and the three-dimensional bending assembly are coaxially arranged; the first straightening roller set and the second straightening roller set are arranged perpendicular to each other. The three-dimensional bending assembly comprises a base and a bending assembly, wherein two limiting rods which are symmetrically arranged are fixed to the base; the sliding seat is arranged on the limiting rod in a sliding manner and is driven by a first telescopic cylinder; the cylinder seat is fixed on the sliding seat, and a rotating cylinder is rotationally arranged in the cylinder seat; and the first bending set and the second bending set are symmetrically arranged in the rotary drum, each of the first bending set and the second bending set comprises a plurality of bending assemblies, and through mutual cooperation of the first straightening roll set and the second straightening roll set and cooperation of the three-dimensional bending assemblies, three-dimensional bending machining of the steel pipe can be achieved through the device.

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; Wherein, the straightening cylinder is coaxially arranged with the three-dimensional bending assembly; The first straightening roller set and the second straightening roller set are arranged perpendicular to each other; Wherein, the three-dimensional bending component comprises: A base, on which two symmetrically arranged limiting rods are fixed; A sliding seat, which is slidably disposed on the limiting rod 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; A first bending group and a second bending group are symmetrically arranged in the rotating drum, and the first bending group and the second bending group both include a plurality of bending components.

[0007] Preferably, the bending assembly comprises a second telescopic cylinder and a bending head arranged at an output end of the second telescopic cylinder, and the bending head is a concave roller.

[0008] Preferably, the bending assembly comprises a second telescopic cylinder and a bending head arranged at an output end of the second telescopic cylinder; 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.

[0009] Preferably, the locking assembly comprises: The accommodating groove has a first wedge block vertically slidably disposed therein; a bolt, which slides through the receiving groove and is threadably connected to the first wedge; a disc spring installed between the first wedge block and the receiving groove; The second wedge block is matched with the first wedge block.

[0010] Preferably, a side of the second wedge block away from the first wedge block is a V-shaped surface, a side 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.

[0011] Preferably, two spacing synchronization adjustment components are provided in the rotating drum, which are used to correspondingly adjust the spacing between multiple bending components in the first bending group and the second bending group; The rotating drum is also provided with a visual sensor for monitoring the bent steel pipe, and when the monitoring data does not meet the standard, the spacing between the multiple bending components is adjusted and the steel pipe is bent again.

[0012] 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, the outer rotating sleeve of the first hinge shaft is provided with two rotating rods, and one end of the rotating rod away from the first hinge shaft is hinged to the adjacent rotating rod through a second hinge shaft; The first hinge shaft located at one end is also driven by the third telescopic cylinder.

[0013] Preferably, a center plate is fixed on the limiting groove, and waist-shaped holes are symmetrically provided on the center plate for accommodating the second hinge shaft in the middle.

[0014] Compared with the prior art, the present invention provides a stainless steel pipe bending processing auxiliary device, which has the following beneficial effects: The present invention can realize high-precision three-dimensional bending processing of steel pipes 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. During the three-dimensional bending processing, the rotating drum on the drum seat starts to rotate, driving the first bending group and the second bending group therein to move to the specified position, thereby realizing the three-dimensional bending processing of the steel pipe.

[0015] The introduction of the visual sensor in this embodiment enables the device to monitor the bending quality in real time, and trigger the spacing synchronization adjustment component and the bending component to adjust and bend the steel pipe again when problems are found. This real-time feedback mechanism helps to improve processing accuracy and stability and reduce human intervention and errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of a stainless steel pipe bending processing auxiliary device; Figure 2 It is a three-dimensional structural schematic diagram of a stainless steel pipe bending processing auxiliary device; Figure 3 for Figure 2 A partially enlarged structural schematic diagram; Figure 4 A schematic diagram of the structure of a bending component in a stainless steel pipe bending auxiliary device Figure 1 ; Figure 5 A schematic diagram of the structure of a bending component in a stainless steel pipe bending auxiliary device Figure 2 ; Figure 6 It is a schematic diagram of the main structure of a spacing synchronization adjustment component in a stainless steel pipe bending processing auxiliary device; 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; 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

[0017] 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.

[0018] Example 1: Please refer to Figure 1-Figure 4 , Figure 6-Figure 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; Wherein, the straightening cylinder 5 is coaxially arranged with the three-dimensional bending component 4; 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 includes: 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 drum seat 45, which is fixed on the slide seat 44, and a rotating drum 46 is rotatably arranged in the drum seat 45; 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 .

[0019] The implementation includes the following steps: 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.

[0020] 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.

[0021] 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).

[0022] Step 4: Output after bending. After the bending process is completed, the steel pipe 6 can be taken out manually.

[0023] 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.

[0024] 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.

[0025] A driving assembly 48 is fixed to the bottom of the slide seat 44 for driving the rotating drum 46 to rotate.

[0026] 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 circumference of the drum 46 and transmits power through friction, while the motor directly drives the friction wheel to rotate.

[0027] The driving assembly 48 can be a combination of a synchronous wheel, a belt and a motor. In this form, the motor drives the synchronous wheel to rotate, and the synchronous wheel then drives the rotating drum 46 to rotate through the belt.

[0028] During the implementation, the rotating drum 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. The two bending groups perform three-dimensional bending processing on the steel pipe 6 entering therein through precise coordinated actions.

[0029] In this embodiment, the bending assembly 47 includes a second telescopic cylinder 471 and a bending head arranged 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 seat 45 starts to rotate, it drives the first bending group and the second bending group therein to move to the specified position. At this time, the second telescopic cylinder 471 in the bending assembly 47 is telescopically adjusted. During this process, the bending head drives the steel pipe 6 to deform, thereby realizing three-dimensional bending processing of the steel pipe 6.

[0030] In this embodiment, two spacing synchronization adjustment components are provided in the rotating drum 46, which are used to correspondingly adjust 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.

[0031] Among them, the visual sensor usually includes a camera, an image processor, and a comparison algorithm. After the camera captures the image of the steel pipe 6, the image processor processes and analyzes the image to extract key feature information. Then, this information is compared with the preset standard to determine whether the bending meets the requirements. If it does not meet the standards, the visual sensor will send a signal to trigger the adjustment of the spacing synchronization adjustment component and the bending component 47 to bend the steel pipe 6 again.

[0032] In this embodiment, the introduction of visual sensors 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 processing accuracy and stability and reduce human intervention and errors. In addition, visual sensors can also be used to record and analyze data during the processing process, providing a basis for optimizing process parameters and improving equipment design.

[0033] In fact, the first bending group and the second bending group are equivalent to a mold for building a bending. 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 ensures the stability of the processing and improves flexibility.

[0034] Specifically, the spacing synchronous adjustment component includes 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 the third telescopic cylinder 415 .

[0035] In addition, a center plate 413 is 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.

[0036] The limit slot 49 is the basis of the spacing synchronous adjustment component, which provides a stable sliding track for installing and supporting the limit block 410. The limit block 410 is slidably arranged on the limit slot 49 and connected to the bending component 47 through the first hinge shaft. The main function of the limit block 410 is to limit the moving range of the bending component 47 and change the spacing between the bending components 47 by adjusting its position in the limit slot 49.

[0037] The rotating rod 411 is rotatably sleeved outside the first hinge shaft, and is hinged to the adjacent rotating rod 411 through the second hinge shaft 412. This structure forms a connecting rod mechanism, and when the first hinge shaft at one end is driven, the entire connecting rod mechanism can be driven to move synchronously, thereby realizing the spacing adjustment between the bending components 47.

[0038] Therefore, when the spacing between the bending assemblies 47 needs to be adjusted, the third telescopic cylinder 415 starts to work, pushing the first hinge shaft at one end to move. Since the rotating rod 411 is rotatably sleeved outside the first hinge shaft and is hinged to the adjacent rotating rod 411 through the second hinge shaft 412. This structure forms a connecting rod mechanism, so this movement will be converted into a synchronous spacing adjustment between the bending assemblies 47. At the same time, the sliding of the limit block 410 in the limit groove 49 also ensures the accuracy and stability of this adjustment.

[0039] Example 2: Please refer to Figure 5 , which is different from the first embodiment in that, in the present embodiment, the bending assembly includes a second telescopic cylinder 471 and a bending head arranged at the output end of the second telescopic cylinder 471. Therefore, in step three, when the rotating cylinder 46 on the cylinder seat 45 starts to rotate, the first bending group and the second bending group therein are driven to move to the specified position. At this time, the second telescopic cylinder 471 in the bending assembly 47 is adjusted to be telescopic. In this process, the bending head drives the steel pipe 6 to deform, thereby realizing the three-dimensional bending processing of the steel pipe 6; 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.

[0040] The steel pipe 6 can be better locked by using the locking assembly, which has a strong clamping force and a stable structure to ensure the stability and accuracy of the steel pipe during the bending process.

[0041] The bending head on the right side of the locking assembly is a concave roller wheel, which ensures that the steel pipe 6 can be fed normally when it is bent.

[0042] During the bending process, the locking assembly first fixes one side of the steel pipe 6, while the other side is positioned and allowed to feed using the concave roller. As the steel pipe 6 feeds, the concave roller gradually moves 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 acted upon by the concave roller during the feeding process, the desired bending angle and shape can be gradually achieved.

[0043] It should be noted that during the bending process, it is necessary to control the feed 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.

[0044] Wherein, the locking assembly comprises: The accommodating groove 472 has a first wedge block 473 vertically slidably disposed therein; 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; The second wedge block 476 is matched with the first wedge block 473 .

[0045] In the present embodiment, locking is achieved by a wedge-shaped fit, wherein, different from the conventional wedge-shaped fit, in the present embodiment, a bolt 475 and a disc spring 474 are further provided, wherein the disc spring 474 can provide a pre-tightening force for the first wedge block 473, and the bolt 475 can limit the first wedge block 473 to prevent it from falling off from the accommodating groove 472, and when the second wedge block 476 moves and squeezes the first wedge block 473, the reaction force of the first wedge block 473 on the second wedge block 476 is high, thereby ensuring the clamping effect.

[0046] Furthermore, a surface of the second wedge block 476 away from the first wedge block 473 is a V-shaped surface, a surface 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.

[0047] The purpose of setting the V-shaped surface is to adapt to steel pipes 6 of different diameters, and the second wedge block 476 has a magnetic block on one side close to the first wedge block 473. The first wedge block 473 is made of magnetic material, so that the second wedge block 476 can be adsorbed on the first wedge block 473 and will not fall off at will.

[0048] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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; or, 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) is matched with the first wedge block (473).

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 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.

4. A stainless steel pipe bending auxiliary device according to claim 3, 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).

5. A stainless steel pipe bending auxiliary device according to claim 4, 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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