Non-ferrous alloy material feeding and straightening device

Abstract

The present application relates to metal straightening processing technical field, especially to a non-ferrous metal alloy material loading and straightening device, which comprises a fixed plate, two left-right symmetrical sliding seats, the sliding seat is concave structure, the opposite surface of the two sliding seats is provided with a clamping mechanism, and the fixed plate is provided with a detection mechanism; the present application drives the extrusion block, the pressing plate and the pressing strip to extrude the inner and outer walls of the pipe fitting through the driving part, changes the pipe end from a circle to an octagon, limits the radial displacement and the circumferential rotation, avoids the deviation of the pipe fitting in the stretching process, and avoids the deviation of the pipe fitting in the stretching process; at the same time, the full contact of the inner and outer walls increases the friction area, reduces the pipe end flattening amount, and the transition section of the octagon to the circle gradually changes, eliminates the stress concentration, prevents the tearing of the transition area during stretching; then the moving part drives the sliding plate, the adjusting part makes the pressure sensor press the pipe surface to collect the pressure fluctuation, and iterates repeatedly until the pressure fluctuation is within the qualified range, so as to realize high-precision closed-loop straightening.

Description

Technical Field

[0001] This invention relates to the field of metal straightening processing technology, and in particular to a non-ferrous metal alloy material feeding and straightening device. Background Technology

[0002] Tension straightening is a precision machining process that applies an axial tensile force exceeding the yield strength of a metallic material, causing it to undergo uniform plastic elongation. This eliminates shape defects such as bending and twisting and improves the distribution of residual stress. It is widely used in the finishing and straightening processes of aluminum alloy tubes, profiles, and bars. In a tension straightening machine, clamping devices are installed at both ends of a fixed tension head and a moving tension head. The two ends of the workpiece are clamped by hydraulic drive, and the moving tension head applies tensile force to complete the straightening process.

[0003] However, the following problems exist in the current process of stretching and straightening pipes: the cross-section of circular pipes lacks self-positioning characteristics, and the weight of long pipes easily causes bending. During clamping, it is difficult to precisely align the pipe axis with the stretching axis, and the pipe end is prone to displacement during clamping, resulting in uneven stretching, which reduces the straightening accuracy and causes uneven distribution of residual stress. The flat clamp has a line contact with the outer wall of the circular pipe, with a small contact area. In order to obtain sufficient friction to prevent slippage, a large radial clamping force is required. This radial force can easily cause the pipe end to be severely flattened, resulting in an excessively long flattened section and a large amount of material waste. At the same time, the transition zone between the flattened and unflattened sections causes stress concentration due to the abrupt change in cross-section, which can easily lead to tearing in the transition zone during stretching.

[0004] Therefore, the lack of self-positioning during the clamping of round pipes, leading to uneven pulling, easy flattening of the pipe ends causing material waste, and easy tearing in the transition zone, are technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the above problems, the present invention provides a non-ferrous metal alloy material feeding and straightening device to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a non-ferrous metal alloy material feeding and straightening device, comprising a fixed plate, two left-right symmetrical slides, the slides having a concave structure, a clamping mechanism being provided on the opposite surfaces of the two slides, and a detection mechanism being provided on the fixed plate.

[0007] As a preferred embodiment, the clamping mechanism includes a circular groove formed in the vertical section of the slide block, a fixed platform installed in the circular groove, an expansion roller coaxially fixedly installed on the fixed platform, each of the four telescopic sections of the expansion roller is provided with a pressing block, four pressure plates are evenly slidably arranged on the outer circumference of the fixed platform, the pressure plates are slidably connected to each other, a pressure strip is slidably installed between two adjacent pressure plates, and a driving unit is provided on the fixed platform.

[0008] As a preferred embodiment, the testing mechanism includes a slide plate that is slidably mounted on the front end of a fixed plate, a pressure sensor that is movably mounted on the slide plate, an adjustment part that is mounted on the slide plate, and a moving part that is mounted on the fixed plate.

[0009] As a preferred embodiment, the driving unit drives the extrusion block to extrude the inner wall of the pipe fitting, and the pressure plate and pressure strip to extrude the outer wall of the pipe fitting, deforming the end of the pipe fitting from a circle to an octagon, reducing the amount of flattening of the pipe end, and making the cross section of the transition zone from octagon to circle gradually change to reduce stress concentration. The moving unit drives the sliding plate to move along the axial direction of the pipe fitting, and the adjusting unit adjusts the pressure sensor to press against the surface of the pipe fitting to collect pressure fluctuations. The pressure fluctuations are collected by repeating the detection and stretching process until they are within the set threshold.

[0010] As a preferred embodiment, the drive unit includes a waist hole formed on the movable seat, the waist hole passing through the movable seat from left to right, and a slide rod corresponding to the waist hole is slidably installed on the fixed platform. The slide rod slides through into the corresponding waist hole, and two guide posts are fixedly installed on the slide rod. The movable seat has an inclined groove corresponding to the guide post, and the guide post slides through into the corresponding inclined groove.

[0011] As a preferred embodiment, the slide block is provided with a push-pull part, which includes a disc, a drive section of the expansion roller and a slide rod that slide through the corresponding slide block and are then fixedly mounted on the disc. The opposite ends of the two slide blocks are fixedly mounted with a hydraulic cylinder, and the telescopic section of the hydraulic cylinder slides through the fixed seat and is then fixedly connected to the disc.

[0012] As a preferred embodiment, the moving part includes two synchronous wheels rotatably mounted on the front end of the fixed plate. The two synchronous wheels are connected by a transmission belt. The slide plate is fixedly connected to the upper part of the transmission belt. A servo motor is fixedly mounted on the fixed plate by a motor mount. The output shaft of the servo motor is coaxially fixedly connected to one of the synchronous wheels.

[0013] As a preferred embodiment, a flat-jaw pliers assembly is provided on the lower horizontal section of the slide block. The flat-jaw pliers assembly is divided into a lower pliers block and an upper pliers block. The lower pliers block is fixedly installed at the upper end of the horizontal section below the slide block, and the upper pliers block is movably installed above the lower pliers block. A second hydraulic cylinder is fixedly installed at the upper end of the slide block. The telescopic section of the second hydraulic cylinder slides through the slide block and is fixedly connected to the corresponding upper pliers block.

[0014] As a preferred embodiment, the adjustment part includes a through groove on the fixed plate, a rectangular groove on the slide plate, a cylinder fixedly installed on the slide plate, and a pressure sensor fixedly installed on the telescopic section of the cylinder through a support plate. The pressure sensor and the support plate movably pass through the rectangular groove and the through groove.

[0015] As a preferred embodiment, the outer circumference of the fixed platform is uniformly provided with a plurality of movable seats that slide radially thereon. A driving block is fixedly installed at the end of the movable seat away from the center of the fixed platform, and a pressure plate is fixedly installed on the driving block.

[0016] As a preferred embodiment, the inclined groove on the left side is inclined from right to left toward the center of the fixed platform on the same side, and the inclined groove on the right side is inclined from left to right toward the center of the fixed platform on the same side.

[0017] As a preferred embodiment, a bearing seat is fixedly installed on the pressure strip, a sliding column is fixedly installed on the bearing seat, and a sliding groove is provided on the pressure plate that corresponds to and slides with the sliding column.

[0018] As a preferred embodiment, the contact surfaces of the pressure strip, extrusion block, pressure plate and pipe fitting are all provided with protrusions, and the protrusions on the contact surfaces are staggered.

[0019] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: First, the present invention drives the extrusion block to extrude the inner wall of the pipe fitting and the pressure plate and pressure strip to extrude the outer wall of the pipe fitting by the driving part, deforming the end of the pipe fitting from a circle to an octagon. The octagonal plane restricts radial displacement and circumferential rotation, avoiding the problem of uneven stretching caused by pipe end slippage or axis deviation during the stretching process; at the same time, the full contact between the inside and outside increases the friction area, which can reliably hold the pipe fitting under a lower clamping force, reducing the flattening of the pipe end, and the gradual change of the cross section of the transition zone from octagon to circle eliminates stress concentration and prevents tearing of the transition zone during stretching; then, the moving part drives the sliding plate and the adjusting part to make the pressure sensor press against the pipe surface to collect pressure fluctuations, locate the maximum bending point and control the two sliding blocks to move in opposite directions to implement axial stretching and straightening, and iterates repeatedly until the pressure fluctuation is within the qualified range, realizing high-precision closed-loop straightening.

[0020] Second, the driving unit of the present invention simultaneously drives the extrusion block to extrude from the inner wall to the outside and the pressure plate and pressure strip to extrude from the outer wall to the inside, uniformly deforming the end of the pipe from a circle to an octagon. The multiple planes of the octagon form a surface contact fit with the clamping mechanism, which restricts the circumferential rotation and radial displacement of the pipe during the stretching process, so that the axis of the pipe always coincides with the stretching axis, thereby avoiding the decrease in straightening accuracy and uneven distribution of residual stress caused by eccentric stretching.

[0021] Third, the extrusion block, pressure plate and pressure strip of the present invention are in full contact with the inner and outer surfaces of the pipe end, which increases the friction area and can obtain sufficient gripping force under a lower radial clamping force, reducing the length and degree of flattening of the pipe end; at the same time, the octagonal to circular transition zone cross section gradually becomes flat without abrupt steps, so that the stress is evenly distributed along the transition zone during tension, avoiding stress concentration caused by abrupt changes in cross section, thereby preventing tearing in the transition zone.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of the structure at point A in the image;

[0026] Figure 3 for Figure 1 A schematic diagram of the second-view structure;

[0027] Figure 4 for Figure 3 Enlarged view of the structure at point B in the image;

[0028] Figure 5 This is a schematic diagram of the structure between the pressure plates of the present invention;

[0029] Figure 6 This is a schematic diagram of the drive unit of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure between the pressure plate and the pressure strip of the present invention.

[0031] Reference numerals: 10. Fixed plate; 11. Slide block; 12. Lower clamp block; 13. Upper clamp block; 14. Hydraulic cylinder II; 2. Clamping mechanism; 20. Expansion roller; 21. Extrusion block; 22. Pressure plate; 220. Moving seat; 221. Drive block; 23. Pressure bar; 230. Shaft seat; 231. Sliding column; 232. Sliding groove; 4. Drive unit; 40. Waist hole; 41. Sliding rod; 42. Guide column; 43. Inclined groove; 5. Push-pull unit; 50. Disc; 51. Hydraulic cylinder I; 3. Detection mechanism; 30. Slide plate; 31. Pressure sensor; 6. Adjustment unit; 60. Cylinder; 61. Support plate; 7. Moving unit; 70. Synchronous pulley; 71. Transmission belt; 72. Servo motor. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 and Figure 3 As shown, a non-ferrous metal alloy material feeding and straightening device includes a fixed plate 10 and two left-right symmetrical slides 11. The slides 11 have a concave structure, and clamping mechanisms 2 are provided on the opposite surfaces of the two slides 11. A detection mechanism 3 is provided on the fixed plate 10.

[0034] like Figure 1 As shown, a flat-jaw pliers assembly is provided on the lower horizontal section of the slide block 11. The flat-jaw pliers assembly is divided into a lower pliers block 12 and an upper pliers block 13. The lower pliers block 12 is fixedly installed at the upper end of the horizontal section below the slide block 11, and the upper pliers block 13 is movably arranged above the lower pliers block 12. A second hydraulic cylinder 14 is fixedly installed at the upper end of the slide block 11. The telescopic section of the second hydraulic cylinder 14 slides through the slide block 11 and is fixedly connected to the corresponding upper pliers block 13.

[0035] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the clamping mechanism 2 includes a circular groove formed in the vertical section of the slide block 11. A fixed platform is installed in the circular groove. An expansion roller 20 is fixedly installed on the opposite face of the two fixed platforms. Each of the four telescopic sections of the expansion roller 20 is provided with a pressing block 21. The pressing block 21 has an isosceles trapezoidal structure. Four pressure plates 22 are evenly slidably arranged on the outer circumference of the fixed platform. The pressure plates 22 are slidably connected to each other. A pressure strip 23 is slidably installed at the inside corner between two adjacent pressure plates 22. The pressure strip 23 has an isosceles trapezoidal structure.

[0036] like Figure 3 and Figure 4 As shown, the detection mechanism 3 includes a slide plate 30 that is slidably mounted on the front end of the fixed plate 10, a pressure sensor 31 that is movably mounted on the slide plate 30, an adjustment part 6 that is mounted on the slide plate 30, and a moving part 7 that is mounted on the fixed plate 10.

[0037] like Figure 6 and Figure 7 As shown, a bearing seat 230 is fixedly installed on the pressure strip 23, a sliding column 231 is fixedly installed on the bearing seat 230, and a sliding groove 232 is provided on the pressure plate 22 to slide and cooperate with the sliding column 231.

[0038] like Figure 7 As shown, the contact surfaces of the pressure strip 23, the extrusion block 21, the pressure plate 22 and the pipe fitting are all provided with protrusions, and the protrusions on the contact surfaces are staggered.

[0039] like Figures 1 to 7As shown, in actual operation, the entire device is installed on a straightening machine with axial tension function. A fixing plate 10 is horizontally fixed on the frame of the straightening machine by bolts or welding. Two parallel linear guide rails are installed on the platform of the straightening machine. Two slide blocks 11 with the same structure are slidably assembled on these two parallel linear guide rails and can move back and forth along the axial direction of the pipe. A driving element is set next to the parallel linear guide rails to adjust the distance between the two slide blocks 11 according to the length of the pipe.

[0040] Each slide 11 is concave, and its vertical section is equipped with a clamping mechanism 2 for turning the end of a circular tube into an octagon. The lower horizontal section retains the original flat jaw clamp assembly of the straightening machine. The flat jaw clamp assembly consists of a lower clamp block 12 and an upper clamp block 13. The lower clamp block 12 is fixed to the upper end face of the lower horizontal section, and the upper clamp block 13 is located directly above it and is driven to rise and fall by a hydraulic cylinder 2 14 that is vertically installed on the upper horizontal section of the slide 11.

[0041] Each of the two fixed platforms has an expansion roller 20 mounted on its opposite side. The expansion roller 20 is a prior art type, such as a mechanical wedge expansion structure, which has four synchronously radially extending telescopic sections evenly arranged in the circumferential direction. Each telescopic section has an isosceles trapezoidal cross-section extrusion block 21 fixed at its end.

[0042] At the start of straightening, the operator or automatic feeding robot places a circular non-ferrous metal alloy tube horizontally between two slide blocks 11, driving the slide blocks 11 to move towards each other, so that both ends of the tube enter the clamping area of ​​the expansion rollers 20. At this time, the expansion rollers 20, together with the extrusion blocks 21 on them, are located inside the tube, while the pressure plates 22 and pressure strips 23 are located outside the tube. Then, the drive unit 4 performs two actions simultaneously: on the one hand, it drives the four telescopic sections on the expansion rollers 20 to extend radially outward in sync, causing the extrusion blocks 21 to move outward and extrude the inner wall of the tube; on the other hand, it drives the four pressure plates 22 and pressure strips 23 to extend radially outward in sync. The plate 22 moves radially inward in sync, causing the pressure plate 22 to squeeze the outer wall of the pipe from the outside. As the pressure plate 22 moves inward, the sliding column 231 and the sliding groove 232 cooperate to drive the pressure strip 23 located at the angle between adjacent pressure plates 22 to also move inward. As the expansion roller 20 continues to extend outward and the pressure plate 22 and pressure strip 23 continue to move inward, the pipe wall thickness undergoes plastic deformation under the combined action of internal and external extrusion forces, ultimately squeezing the circular end of the pipe into an octagonal profile. During this process, the misaligned protrusions on the contact surface are embedded in the surface of the pipe, forming a reliable anti-rotation and anti-slip interface.

[0043] After clamping and fixing are completed, the stretching and straightening stage begins. The drive element on the frame drives the two slides 11 to move back to back along the parallel linear guide rail. Since the two ends of the pipe are firmly fixed by the clamping mechanism 2, the moving back of the slides 11 applies an axial tensile force to the pipe. The magnitude of this tensile force is set by the control system of the straightening machine according to the material and diameter of the pipe. It usually needs to exceed the yield strength of the material to make the pipe plastically elongate. Under the action of the axial tensile force, the pipe undergoes plastic deformation along its length, and its original curvature is gradually straightened. After one stretching is completed, the drive element stops and maintains the tensile force or slightly releases the force.

[0044] After stretching, the testing and judgment stage begins. First, the pressure sensor 31 is brought into contact with the outer surface of the pipe with a constant light pressure through the adjustment unit 6. This pressure is much less than the yield strength of the pipe and will not cause new deformation. Then, the moving unit 7 is activated to drive the slide plate 30 to slowly sweep from one end of the pipe to the other. During the movement of the slide plate 30, the pressure sensor 31 collects the contact pressure value in real time and transmits it to the controller. If the pipe has been completely straightened, its outer surface generatrix is ​​a straight line, and the pressure value measured by the pressure sensor 31 throughout the entire stroke will remain stable with very little fluctuation. If there is still residual bending in the pipe, the pressure will increase significantly when the pressure sensor 31 passes the bent convex side and decrease or lose contact when it passes the concave side.

[0045] The controller compares the collected pressure fluctuation curve with the preset qualified threshold. If the difference between the maximum and minimum pressure fluctuation values ​​is within the qualified range, the pipe fitting is determined to be straightened and qualified. If it exceeds the qualified range, it is determined that it has not been straightened and needs to be further processed. At this time, the controller locates the pressure peak point, i.e. the position with the largest deformation, according to the pressure curve. The moving part 7 drives the slide plate 30 to move in the opposite direction, and precisely retracts the pressure sensor 31 to the position of the peak point. The straightening machine's control system, based on the pressure deviation at this point, restarts the drive element to drive the two slides 11 to perform one or more additional axial stretches. These additional stretches can be a whole-body re-stretch of the entire pipe fitting, or the slides 11 can be controlled to perform local targeted stretching with a specific stroke. For example, they can first move slightly towards each other to release some stress, and then move in opposite directions to perform stronger local stretching. After each stretch, the slide plate 30 is driven to move along the full length again to detect pressure changes. The iterative cycle of detecting the bending peak point, axial stretching and straightening, and re-detecting is repeated until the value change of the pressure sensor 31 in the entire stroke stabilizes within the qualified range.

[0046] Once the pressure fluctuations stabilize within the acceptable range, the system determines that the pipe fitting is straightened and then proceeds with unloading and feeding: First, the drive unit 4 of the expansion roller 20 is controlled to retract the telescopic section, while the pressure plate 22 is driven to reset outward, so that the extrusion block 21, pressure plate 22 and pressure strip 23 are separated from the end of the pipe fitting; then, the two slide blocks 11 are driven to move in opposite directions to remove the straightened pipe fitting, and the feeding and straightening operation of the next pipe fitting can be carried out.

[0047] like Figure 6 and Figure 7 As shown, a plurality of movable seats 220 are evenly arranged on the outer circumference of the fixed platform and slide along its radial direction. A driving block 221 is fixedly installed at the end of the movable seat 220 away from the center of the fixed platform, and a pressure plate 22 is fixedly installed on the driving block 221.

[0048] like Figure 1 , Figure 6 and Figure 7 As shown, the drive unit 4 includes a waist hole 40 opened on the movable base 220, the waist hole 40 passing through the movable base 220 from left to right, and a slide rod 41 corresponding to the waist hole 40 is slidably installed on the fixed platform. The slide rod 41 slides through into the corresponding waist hole 40, and two guide posts 42 are fixedly installed on the slide rod 41. The movable base 220 is provided with inclined grooves 43 corresponding to the guide posts 42, and the guide posts 42 slide through into the corresponding inclined grooves 43.

[0049] like Figure 1 , Figure 2 and Figure 5 As shown, the slide block 11 is provided with a push-pull part 5, which includes a disc 50. The drive section of the expansion roller 20 and the slide rod 41 slide through the corresponding slide block 11 and are fixedly installed together on the disc 50. The opposite ends of the two slide blocks 11 are fixedly installed with a hydraulic cylinder 51 through a fixed seat. The telescopic section of the hydraulic cylinder 51 slides through the fixed seat and is fixedly connected to the disc 50.

[0050] like Figure 6 and Figure 7 As shown, the inclined groove 43 on the left side is inclined from right to left toward the center of the fixed platform on the same side, and the inclined groove 43 on the right side is inclined from left to right toward the center of the fixed platform on the same side.

[0051] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, in specific operation, the pipe is first placed between the two slides 11 and both ends are brought into the clamping area. Then, the hydraulic cylinder 51 is activated, and the disc 50 is pushed and moves toward the inside of the slide 11. The disc 50 simultaneously drives two sets of mechanisms: First, the disc 50 pushes the drive section of the expansion roller 20 to move inward, driving the wedge mechanism inside the expansion roller 20 to make the four telescopic sections extend radially outward in sync, thereby pushing the extrusion block 21 to press against the inner wall of the pipe. Second, the disc 50 pushes all the slide rods 41 to move inward in sync, and the guide post 42 on the slide rod 41 moves accordingly. Since the guide post 42 is slidably fitted in the inclined groove 43 of the moving seat 220, the axial movement of the guide post 42 will force the moving seat 220 to slide radially inward along the fixed platform. The moving seat 220 drives the pressure plate 22 to move radially inward in sync through the drive block 221, extruding the outer wall of the pipe from the outside.

[0052] As the pressure plate 22 moves inward, the extrusion block 21 expands outward from the inside. The internal and external extrusion forces work together on the end wall thickness of the pipe, extruding and deforming the circular end of the pipe into an octagonal profile. Throughout the process, the extension of the hydraulic cylinder 51 directly determines the outward extension distance of the extrusion block 21 and the inward retraction distance of the pressure plate 22. The clamping force can be precisely adjusted by controlling the stroke of the hydraulic cylinder 51.

[0053] When it is necessary to loosen the pipe fitting, the telescopic section of the hydraulic cylinder 51 retracts in the opposite direction, pulling the disc 50 outward. The disc 50 drives the drive section of the expansion roller 20 to retract, causing the telescopic section and the extrusion block 21 to retract radially inward and detach from the inner wall of the pipe fitting. At the same time, the slide rod 41 moves outward, and the guide post 42 pulls the moving seat 220 radially outward through the inclined groove 43, thereby driving the pressure plate 22 and the pressure strip 23 to move outward, releasing the extrusion on the outer wall of the pipe fitting. The end of the pipe fitting returns to a free state and can then be removed.

[0054] like Figure 3 and Figure 4 As shown, the moving part 7 includes two synchronous wheels 70 rotatably mounted on the front end of the fixed plate 10. The two synchronous wheels 70 are connected by a transmission belt 71. The slide plate 30 is fixedly connected to the upper part of the transmission belt 71. A servo motor 72 is fixedly mounted on the fixed plate 10 by a motor mount. The output shaft of the servo motor 72 is coaxially fixedly connected to one of the synchronous wheels 70.

[0055] like Figure 3 and Figure 4 As shown, the adjustment part 6 includes a through groove on the fixed plate 10, a rectangular groove on the slide plate 30, a cylinder 60 fixedly installed on the slide plate 30, and a pressure sensor 31 fixedly installed on the telescopic section of the cylinder 60 through the support plate 61. The pressure sensor 31 and the support plate 61 movably pass through the rectangular groove and the through groove.

[0056] like Figures 3 to 4As shown, during actual operation, the telescopic section of the cylinder 60 is first extended, pushing the support plate 61 and pressure sensor 31 towards the pipe. The pressure sensor 31 and the support plate 61 pass through the rectangular groove and the through groove until the pressure sensor 31 presses against the outer surface of the pipe with a constant light pressure. The pressure is precisely controlled by the air supply pressure of the cylinder 60 to ensure that the pressure sensor 31 maintains stable contact with the surface of the pipe without causing plastic deformation of the pipe. Then, the servo motor 72 is started to drive the slide plate 30 to move at a constant speed along the axial direction of the pipe from one end to the other. Since the slide plate 30 is fixedly connected to the transmission belt 71, and the cylinder 60, support plate 61 and pressure sensor 31 all move together with the slide plate 30, the pressure sensor 31 moves smoothly along the surface of the pipe while maintaining a constant pressure, sweeping across the entire length of the pipe.

[0057] During the movement, the pressure sensor 31 collects the contact pressure value in real time and transmits it to the controller. If the pipe is bent, the pressure sensor 31 will increase when it passes a protrusion and decrease when it passes a depression. The controller records the pressure fluctuation curve and compares it with the preset qualified threshold to determine whether the pipe is straight. After the test is completed, the cylinder 60 retracts its telescopic section, moving the pressure sensor 31 and the support plate 61 away from the pipe, so that they are removed from the surface of the pipe and retracted to the initial position to avoid affecting the loading and unloading of the pipe.

[0058] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0059] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A non-ferrous metal alloy material feeding and straightening device, comprising a fixed plate and two symmetrical sliding blocks, the sliding blocks having a concave structure, characterized in that: Both slides are equipped with clamping mechanisms on their opposite surfaces, and a detection mechanism is provided on the fixed plate. The clamping mechanism includes a circular groove in the vertical section of the slide block, a fixed platform installed in the circular groove, an expansion roller coaxially fixed on the fixed platform, and a squeezing block provided in each of the four telescopic sections of the expansion roller. Four pressure plates are evenly slidably arranged on the outer circumference of the fixed platform, and the pressure plates are slidably connected to each other. A pressure strip is slidably installed between two adjacent pressure plates. A driving unit is provided on the fixed platform. The testing mechanism includes a sliding plate that is slidably mounted on the front end of a fixed plate, a pressure sensor that is movably mounted on the sliding plate, an adjustment part that is mounted on the sliding plate, and a moving part that is mounted on the fixed plate. The drive unit includes a waist hole opened on the movable seat, the waist hole passing through the movable seat from left to right, and a slide rod corresponding to the waist hole is slidably installed on the fixed platform. The slide rod slides through into the corresponding waist hole, and two guide posts are fixedly installed on the slide rod. The movable seat has an inclined groove corresponding to the guide post, and the guide post slides through into the corresponding inclined groove. The slide block is provided with a push-pull part, which includes a disc, a drive section of the expansion roller and a slide rod that slide through the corresponding slide block and are then fixedly installed together on the disc. The opposite ends of the two slide blocks are fixedly installed with a hydraulic cylinder one through a fixed seat. The telescopic section of the hydraulic cylinder one slides through the fixed seat and is then fixedly connected to the disc. The moving part includes two synchronous wheels rotatably mounted on the front end of the fixed plate. The two synchronous wheels are connected by a transmission belt. The slide plate is fixedly connected to the upper part of the transmission belt. A servo motor is fixedly mounted on the fixed plate by a motor mount. The output shaft of the servo motor is coaxially fixedly connected to one of the synchronous wheels. The adjustment part includes a through groove on the fixed plate, a rectangular groove on the slide plate, a cylinder fixedly installed on the slide plate, and a pressure sensor fixedly installed on the telescopic section of the cylinder through a support plate. The pressure sensor and the support plate movably pass through the rectangular groove and the through groove. The contact surfaces of the pressure strip, extrusion block, pressure plate and pipe fitting are all provided with protrusions, and the protrusions on the contact surfaces are staggered. The driving unit drives the extrusion block to extrude the inner wall of the pipe fitting, and the pressure plate and pressure strip to extrude the outer wall of the pipe fitting, deforming the end of the pipe fitting from a circle to an octagon, reducing the amount of flattening of the pipe end, and making the cross section of the transition zone from octagon to circle gradually change to reduce stress concentration. The moving unit drives the sliding plate to move along the axial direction of the pipe fitting, and the adjusting unit adjusts the pressure sensor to press against the surface of the pipe fitting to collect pressure fluctuations. The process of repeated detection and stretching is continued until the pressure fluctuations are within the set threshold.

2. The non-ferrous metal alloy material feeding and straightening device according to claim 1, characterized in that: A flat-jaw pliers assembly is provided on the lower horizontal section of the slide block. The flat-jaw pliers assembly is divided into a lower pliers block and an upper pliers block. The lower pliers block is fixedly installed at the upper end of the horizontal section below the slide block, and the upper pliers block is movably installed above the lower pliers block. A hydraulic cylinder two is fixedly installed at the upper end of the slide block. The telescopic section of the hydraulic cylinder two slides through the slide block and is fixedly connected to the corresponding upper pliers block.

3. The non-ferrous metal alloy material feeding and straightening device according to claim 1, characterized in that: The fixed platform has multiple movable seats that slide radially along its outer circumference. A driving block is fixedly installed at the end of the movable seat away from the center of the fixed platform, and a pressure plate is fixedly installed on the driving block.

4. The non-ferrous metal alloy material feeding and straightening device according to claim 1, characterized in that: The inclined groove on the left side tilts from right to left toward the center of the fixed platform on the same side, while the inclined groove on the right side tilts from left to right toward the center of the fixed platform on the same side.

5. The non-ferrous metal alloy material feeding and straightening device according to claim 1, characterized in that: A bearing seat is fixedly installed on the pressure strip, and a sliding column is fixedly installed on the bearing seat. The pressure plate has a sliding groove that corresponds to and slides with the sliding column.

Images