A processing method for nickel-white copper triangular bar

Abstract

The present invention relates to the field of bar processing technology, specifically a method for processing nickel-white copper triangular bars, comprising the following steps: S1, heating the ingot to form a triangular bar blank; S2, diameter reduction treatment; S3, annealing heat treatment; S4, electroplating treatment and S5, quality inspection. The detection device used in S5 includes a detection platform, a CCD camera and a positioning mechanism. In the present invention, the bar is limited and tightened by a pre-positioning part and a tightening part, so that the three circumferential end faces of the bar are facing upward in turn, and the three end faces of the bar are photographed and sampled in turn by a CCD camera, and the quality of the bar is detected based on the obtained bar surface image information. This detection method avoids the problem of human naked eye fatigue affecting the detection quality, and at the same time meets the detection needs in the batch bar production process, while ensuring that the CCD camera is perpendicular to the corresponding shooting end face when shooting, thereby improving the accuracy of image acquisition.

Description

Technical Field

[0001] The invention relates to the technical field of bar processing, in particular to a processing method of nickel-white copper triangular bars. Background Art

[0002] Nickel-white copper triangular bar is a rod-shaped material with a triangular cross-section. It combines the advantages of copper and nickel, with nickel as the main alloying element. It has good corrosion resistance, excellent mechanical properties, good thermal conductivity and electrical conductivity, and is widely used in marine engineering, electronics, instrumentation and other fields.

[0003] At present, the processing method of nickel-nickel copper triangle bars mainly includes the steps of raw material preparation, smelting and casting, hot working, cold working, heat treatment, surface treatment, quality inspection and packaging and storage. Among them, quality inspection is one of the most important steps. The quality inspection items include dimensional accuracy measurement, chemical composition analysis, mechanical property testing, surface quality inspection, etc. The surface defects of nickel-nickel copper triangle bars will affect the appearance quality, dimensional accuracy and performance of nickel-nickel copper triangle bars. The surface quality inspection step can timely detect defects such as cracks, pores, scratches, peeling, etc. on the bars. Therefore, surface quality inspection is the first type of quality inspection required. At present, surface defects are mainly detected by naked eye observation or optical microscope during surface quality inspection.

[0004] The following problems exist in the above-mentioned surface quality inspection process: when performing surface quality inspection by naked eye, the inspection speed is slow and personnel are easily fatigued, resulting in poor overall efficiency and inspection effect. Although the use of optical microscopes can provide clear images, personnel need to adjust and observe each field of view one by one, which is time-consuming and labor-intensive, and cannot meet the rapid inspection needs in large-scale production processes.

[0005] Secondly, in order to solve the above problems, a CCD camera is usually used to shoot the surface of the bar and collect surface data, and then image processing and analysis are performed to detect the surface image of the bar. However, the placement state of the triangular bar during triangular bar detection will directly affect the accuracy of the collected data, that is, the tilt of the detection end face of the bar causes uneven light radiation, which causes the collected image to be deformed, thereby affecting the accuracy of image acquisition and ultimately affecting the accuracy of the detection results. In addition, when the triangular bar is fixed, it will also cause occlusion of the triangular bar bag detection area, thereby affecting the detection results. Summary of the Invention

[0006] Based on this, it is necessary to provide a method for processing nickel-white copper triangular bars, aiming to solve the problems of the above-mentioned prior art.

[0007] The present application provides a method for processing nickel-white copper triangular bars, comprising the following steps: S1, heating the nickel-white copper ingot in a heating furnace, and preliminarily processing it into a triangular bar blank by die extrusion or groove rolling.

[0008] S2. Use a triangular drawing die to perform multiple diameter reduction processes on the triangular bar blank to obtain a triangular bar.

[0009] S3. Perform annealing heat treatment on the triangular bar after the diameter reduction treatment.

[0010] S4. The triangular bar is subjected to surface electroplating treatment after heat treatment and cooled, and a layer of alloy coating is plated on the surface.

[0011] S5. Conduct quality inspection on the processed triangular bars.

[0012] In step S5, a detection device is used to sequentially detect the three end faces of the triangular bar. The detection device includes a detection platform. A detection portion is provided on the detection platform and slides left and right and is located above the detection platform. The detection portion includes a CCD camera for quickly collecting image information of the bar surface.

[0013] The detection platform is provided with a positioning mechanism, which includes a lifting platform. The upper end surface of the detection platform is provided with a lifting platform for supporting rods. The detection platform is provided with two left-right symmetrical multi-stage hydraulic rods. The second telescopic section of the multi-stage hydraulic rod is provided with a pre-positioning part, and the first telescopic section is provided with a tightening part.

[0014] The pre-positioning portion includes three V-shaped positioning plates that are slidably arranged on the second telescopic section and correspond one-to-one to the top corners of the rod. The rod is positioned by fitting the V-shaped areas of the three positioning plates on the same side to the top corners of the rod.

[0015] The pressing portion includes a pressing platform and a plurality of positioning columns arranged on the pressing platform. The left and right pressing platforms press the rod material to position it in the left and right directions, and enable the plurality of positioning columns to position the rod material circumferentially.

[0016] The lifting platform is provided with a switching part. When the pressing platform presses against the rod, the switching part is used to reset and move the positioning plate out, thereby maintaining the positioning of the rod and avoiding the image collection process.

[0017] According to a favorable embodiment, the pre-positioning portion also includes a mounting bar, and two vertically symmetrical mounting bars are fixedly provided on the second telescopic section. A mounting rod with an axis extending from left to right is passed through the mounting bar and slides left and right. A mounting ring is fixedly provided on one side of the two mounting rods close to the lifting platform.

[0018] According to a favorable embodiment, the three positioning plates on the same side together form a triangular frame, the longitudinal interface area formed by extending the inner end faces of the three positioning plates matches the longitudinal cross-section of the rod, and the inner end faces of the positioning plates facing the lifting platform are chamfered.

[0019] According to an advantageous embodiment, a pressure spring sleeved on the mounting rod is fixedly provided between the mounting ring and the mounting bar.

[0020] According to a favorable embodiment, the clamping portion also includes a V-shaped frame, and the clamping platform is rotatably set on the first telescopic section, and the two clamping platforms clamp the rod to the left and right to limit the rod in the left and right directions. A V-shaped frame corresponding to the positioning plate is fixedly set on the clamping platform, and the positioning column is fixedly set on the branch of the V-shaped frame, and the same positioning plate corresponds to two positioning columns, and the corresponding two positioning columns are tightly attached to the end faces on both sides of the corresponding top angles on the rod, and a triangular limitation is formed on the rod by the contact limitation of the two adjacent positioning columns on the corresponding top angles of the rod, and the positioning plate is close to the end face of the rod with a through groove corresponding to the two corresponding positioning columns.

[0021] According to a favorable embodiment, the switching part includes a moving platform, and two moving platforms distributed on the left and right sides of the lifting platform are provided on the upper end surface of the detection platform. A U-shaped frame is provided on the moving platform for sliding left and right, and a pushing block for pushing the mounting ring is fixedly provided on the two vertical sections of the U-shaped frame. Two front-to-back symmetrical L-shaped frames are provided on the moving platform for sliding left and right, and racks are fixedly provided between the two L-shaped frames and on the U-shaped frames. A gear rotatably provided on the moving platform is provided between the two racks, and the gear and rack are engaged with each other.

[0022] According to a favorable embodiment, the switching portion further comprises a plug-in rack, a plug-in rack is plugged into the L-shaped rack, an L-shaped force block is fixedly mounted on the plug-in rack, a pushing plate corresponding to the force block is fixedly mounted on the first telescopic section, and the L-shaped rack is moved by pushing the vertical section of the force block through the pushing plate.

[0023] According to a favorable embodiment, both of the abutting platforms are provided with a fixed angle portion for controlling the angle of the rod after being clamped, the fixed angle portion includes a fixed plate, and three circumferentially distributed fixed plates are fixedly provided on the opposite back surfaces of the two abutting platforms, a moving rod is vertically slidably provided on the fixed plate, a positioning block is fixedly provided on the moving rod, and a reset spring mounted on the moving rod is fixedly provided between the positioning block and the fixed plate.

[0024] According to a favorable embodiment, when the positioning plate that cooperates with the rod at a right angle cooperates with the three blocking blocks in sequence, the three end faces of the rod face upward in sequence, the blocking blocks are triangular in shape and the top angle of the blocking blocks is away from the axis of the clamping platform.

[0025] According to a preferred embodiment, a plug-in rod is fixedly provided on the left end face of the mounting strip on the lower left side, and a plug-in tube is fixedly provided on the right end face of the mounting strip on the lower right side. The plug-in rod is inserted into the plug-in tube, so that the left and right mounting rings are integrated.

[0026] In summary, the present invention includes at least one of the following beneficial effects: First, in the present invention, the pre-positioning part and the tightening part are used to limit and tighten the rod, so that the three circumferential end faces of the rod are facing upward in turn, and the three end faces of the rod are photographed and sampled in turn by the CCD camera, and the quality of the rod is detected based on the obtained surface image information of the rod. This detection method avoids the problem of fatigue of personnel in naked eye detection affecting the detection quality, and at the same time meets the detection needs in the batch production process of rods. Secondly, the shooting detection method can quickly collect the surface information of the rod, and can perform rapid scanning and detection of the rod, thereby improving the detection efficiency of the rod, and at the same time ensure that the CCD camera is perpendicular to the corresponding shooting end face when shooting, thereby improving the accuracy of image acquisition.

[0027] 2. In the present invention, the rod is pre-positioned by clamping it into the positioning plate, and then the positioning column takes over the positioning state of the positioning plate to perform positioning, and the positioning of the rod in the circumferential direction is completed by triangulation positioning, so that the rod maintains a horizontal state and the three end faces of the rod are arranged in a set direction, ensuring that the CCD camera is perpendicular to the shooting end face when shooting, avoiding the tilt of the shooting end face due to the tilt of the rod, affecting the accuracy of image acquisition. In summary, the stability of the rod during shooting and the accuracy of the detection results are improved.

[0028] 3. In the present invention, the upper positioning plate contacts and cooperates with the corresponding three positioning blocks in sequence, that is, the cooperation between the inner angle of the positioning plate and the positioning block is used as the detection angle reference, and the circumferential end faces of the rod corresponding to the positioning block are controlled to face upward in sequence, ensuring that the corresponding circumferential end faces of the rod remain horizontal and face upward when the CCD camera is shooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0030] Figure 1 A schematic flow chart of a method for processing nickel-white copper triangular bars provided according to an embodiment of the present invention is shown.

[0031] Figure 2A schematic diagram of the three-dimensional structure among the detection platform, CCD camera and positioning mechanism provided according to an embodiment of the present invention is shown.

[0032] Figure 3 A schematic diagram of the three-dimensional structure between a multi-stage hydraulic rod, a switching part and a lifting platform provided according to an embodiment of the present invention is shown.

[0033] Figure 4 A front view of a connecting rod, a connecting cylinder and a positioning plate provided according to an embodiment of the present invention is shown.

[0034] Figure 5 A schematic diagram of the three-dimensional structure among a multi-stage hydraulic rod, a pushing plate and a force-bearing block provided according to an embodiment of the present invention is shown.

[0035] Figure 6 A side view of a multi-stage hydraulic rod, a mounting ring and a V-shaped bracket according to an embodiment of the present invention is shown.

[0036] Figure 7 A schematic diagram of the three-dimensional structure among the locking block, the tightening strip and the positioning plate provided according to an embodiment of the present invention is shown.

[0037] Figure 8 A schematic diagram showing a change in the detection angle of a bar defined by a fixed angle portion provided in accordance with an embodiment of the present invention is shown.

[0038] The above drawings include the following reference numerals: 1. detection platform; 2. CCD camera; 3. positioning mechanism; 30. lifting platform; 31. multi-stage hydraulic rod; 310. first telescopic section; 311. second telescopic section; 32. pre-positioning portion; 320. positioning plate; 321. mounting bar; 322. mounting rod; 323. mounting ring; 324. rib; 325. pressure spring; 33. pressing portion; 330. pressing platform; 331. positioning plate; Positioning column; 332, V-shaped frame; 333, through slot; 34, switching part; 340, moving platform; 341, U-shaped frame; 342, pushing block; 343, L-shaped frame; 344, rack; 345, gear; 346, plug-in frame; 347, force block; 348, pushing plate; 35, fixed angle part; 350, fixed plate; 351, moving rod; 352, positioning block; 353, return spring; 36, plug-in rod; 360, plug-in cylinder. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] like Figure 1 As shown, a method for processing nickel-white copper triangular bars comprises the following steps: S1, heating the ingot to form a triangular bar blank: heating the nickel-white copper ingot in a heating furnace, and using a die extrusion or pass rolling method to preliminarily process it into a triangular bar blank, wherein the temperature of the heating furnace is heated to between 850 and 950°C to avoid overburning, and then the temperature is kept for 1 to 2 hours, and a protective atmosphere is filled during the addition to prevent oxidation.

[0041] S2. Reducing treatment: Use a triangular drawing die to perform multiple reduction treatments on the triangular bar blank to obtain a triangular bar, where the deformation of each pass is ≤15%. Annealing treatment is performed between passes at a temperature between 600 and 700°C, and then kept warm for 1 hour to eliminate stress, restore the plasticity and toughness of the material, and improve the structural stability of the material.

[0042] S3. Annealing heat treatment: Annealing heat treatment is performed on the triangular bar after the diameter reduction treatment. The requirements for the annealing treatment are the same as those for the inter-pass annealing treatment in step S2.

[0043] S4. Electroplating treatment: The triangular bar after heat treatment and cooling is subjected to surface electroplating treatment, and a layer of alloy coating is plated on the surface. The common electroplating surface treatment method is chemical plating, which forms a layer of alloy coating on the surface of the triangular bar through chemical reaction, which has good uniformity and corrosion resistance.

[0044] S5. Quality inspection: The processed triangular bars are subjected to quality inspection. The most important quality inspection is the surface quality inspection, which is to check whether there are defects such as cracks, scratches, and pores on the surface of the bars.

[0045] like Figure 2 As shown, in step S5, a detection device is used to sequentially detect the three circumferential end faces of the triangular bar. The detection device includes a detection platform 1, on which a detection portion is provided that slides left and right and is located above the detection platform 1. The detection portion includes a CCD camera 2 for quickly collecting image information on the surface of the bar and a driving component for driving the CCD camera 2 to move left and right. The driving component adopts existing technology.

[0046] like Figure 2 、 Figure 3 and Figure 4As shown, the detection platform 1 is provided with a positioning mechanism 3, and the positioning mechanism 3 includes a lifting platform 30. The upper end surface of the detection platform 1 is provided with a lifting platform 30 for supporting the rod. After the rod is positioned and locked, the lifting platform 30 is driven down and separated from the rod by the existing hydraulic cylinder. Two left-right symmetrical multi-stage hydraulic rods 31 are provided on the detection platform 1. The second telescopic section 311 of the multi-stage hydraulic rod 31 is provided with a pre-positioning part 32, and the first telescopic section 310 is provided with a tightening part 33.

[0047] like Figure 3 and Figure 6 As shown, the pre-positioning portion 32 includes three V-shaped positioning plates 320 that are slidably arranged on the second telescopic section 311 and correspond one-to-one to the top angles of the rod. The rod is positioned by fitting the V-shaped areas of the three positioning plates 320 on the same side to the top angles of the rod.

[0048] like Figure 3 、 Figure 6 and Figure 7 As shown, the pressing portion 33 includes a pressing platform 330 and a plurality of positioning posts 331 provided on the pressing platform 330 . The left and right pressing platforms 330 press the bar to position it in the left and right directions, and the plurality of positioning posts 331 position the bar circumferentially.

[0049] like Figure 3 、 Figure 4 and Figure 7 As shown, the lifting platform 30 is provided with a switching part 34. When the pressing platform 330 presses against the bar, the switching part 34 is used to reset and move the positioning plate 320, thereby avoiding the problem that the positioning plate 320 covers the surface of the bar and affects the detection process.

[0050] During operation, the rod to be inspected is first placed on the lifting platform 30, and then the multi-stage hydraulic rods 31 on both sides start working at the same time. The first telescopic section 310 and the second telescopic section 311 of the multi-stage hydraulic rod 31 are extended at the same time, first making the positioning plates 320 in the two pre-positioning parts 32 close to the plate, and finally the three positioning plates 320 in the same pre-positioning part 32 are stuck on the adjacent ends of the rod, and the rod is preliminarily positioned by the corresponding three positioning plates 320, and the pre-positioning action on the left and right sides makes the rod in a horizontal state, thereby completing the preliminary positioning of the rod.

[0051] Afterwards, as the multi-stage hydraulic rod 31 continues to operate, the second telescopic section 311 of the multi-stage hydraulic rod 31 extends out of the set area, and the first telescopic section 310 of the multi-stage hydraulic rod 31 begins to gradually extend, so the first telescopic section 310 drives the corresponding pressing platform 330 to press against the rod, and the left and right directions of the rod are limited by the pressing action of the left and right pressing platforms 330. At the same time, the pressing platform 330 drives the positioning column 331 thereon to move synchronously and position the rod circumferentially. Secondly, in the above process, the switching part 34 is used to make the positioning plate 330 20 releases the positioning of the rod, the positioning plate 320 no longer contacts the end face of the rod, and the positioning column 331 replaces the positioning plate 320 to position the rod. Since the area of ​​the positioning column 331 is much smaller than the positioning plate 320, the area of ​​the rod covered by the positioning column 331 will not affect the quality of the image information collected by the CCD camera 2, that is, it will not affect the subsequent detection process based on the image information, and avoid the subsequent detection process being affected by the positioning plate 320 covering too large an area of ​​the rod. At this point, the rod is positioned to the set state, and then the lifting platform 30 moves down.

[0052] Finally, the rod is rotated so that the three end faces of the rod are facing upward in sequence. At the same time, the CCD camera 2 takes pictures and samples the three end faces of the rod in sequence, and the quality of the rod is detected based on the obtained surface image information of the rod.

[0053] like Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown, the pre-positioning portion 32 also includes a mounting bar 321, and two vertically symmetrical mounting bars 321 are fixedly provided on the second telescopic section 311. A mounting rod 322 with an axis extending from left to right is passed through the mounting bar 321 for sliding left and right. A mounting ring 323 is fixedly provided on the side of the two mounting rods 322 close to the lifting platform 30. In order to improve the installation strength of the positioning plate 320, the positioning plate 320 is fixed on the end face of the mounting ring 323 facing the lifting platform 30 through the rib plate 324. The three positioning plates 320 on the same side together form a triangular frame. The longitudinal interface area formed by the extension of the inner end faces of the three positioning plates 320 is matched with the longitudinal cross-section of the rod. In order to ensure that the positioning plate 320 moves to the surface area of ​​the rod during the left and right movement, the inner end face of the positioning plate 320 facing the lifting platform 30 is chamfered.

[0054] After the rod is placed on the lifting platform 30, the multi-stage hydraulic rods 31 on both sides operate simultaneously, so that the second telescopic section 311 drives the first telescopic section 310 to extend at the same time, and the second telescopic section 311 drives the mounting rod 322 and the mounting ring 323 to move synchronously through the mounting bar 321, and the mounting ring 323 drives the V-shaped frame 332 on it to approach the rod. Taking the positioning plate 320 on the mounting ring 323 on one side as an example, the three top corners of the rod are simultaneously stuck in the V-shaped area of ​​the corresponding positioning plate 320, and the three positioning plates 320 form a preliminary positioning of the triangular guide. The positioning of the rod in the circumferential direction is completed by performing triangular positioning on the left and right ends of the rod at the same time, so that the rod maintains a horizontal state and the three end faces of the rod are arranged in the set direction. It should be noted that the positioning method of forming the triangular frame is highly consistent with the cross-section of the rod, which improves the stability of the rod positioning and guiding process while ensuring positioning accuracy.

[0055] like Figure 5 As shown, a pressure spring 325 is fixedly provided between the mounting ring 323 and the mounting bar 321 and is sleeved on the mounting rod 322. Figure 3 、 Figure 6 and Figure 7 As shown, the tightening portion 33 also includes a V-shaped frame 332, and the tightening platform 330 is rotatably set on the first telescopic section 310, and the two tightening platforms 330 press the rod to the left and right to limit the rod in the left and right directions. A V-shaped frame 332 corresponding to the positioning plate 320 is fixed on the tightening platform 330, and the positioning column 331 is fixed on the branch of the V-shaped frame 332, and the same positioning plate 320 corresponds to two positioning columns 331, and the corresponding two positioning columns 331 are tightly attached to the end faces on both sides of the corresponding vertex angles on the rod, and a triangular limitation is formed on the rod by the contact limitation of the corresponding vertex angles of the rod by the two adjacent positioning columns 331. The end face of the positioning plate 320 close to the rod is provided with a through groove 333 corresponding to the corresponding two positioning columns 331, and the free end of the positioning column 331 is chamfered.

[0056] like Figure 3 、 Figure 4 and Figure 5As shown, the switching part 34 includes a moving platform 340. Two moving platforms 340 are provided on the upper end surface of the detection platform 1 and are distributed on the left and right sides of the lifting platform 30. The moving platform 340 is fixed at a set position on the detection platform 1 manually according to the length size of the detection rod. A U-shaped frame 341 is provided on the moving platform 340 for sliding left and right. A pushing block 342 for pushing the mounting ring 323 is fixed on the two vertical sections of the U-shaped frame 341. Two front-to-back symmetrical L-shaped frames 343 are provided on the moving platform 340 for sliding left and right. A rack 344 is fixed between the two L-shaped frames 343 and on the U-shaped frame 341. A gear 345 rotatably provided on the moving platform 340 is provided between the two racks 344, and the gear 345 and the rack 344 are engaged with each other.

[0057] like Figure 3 、 Figure 4 and Figure 5 As shown, the switching portion 34 also includes a plug-in rack 346, the plug-in rack 346 is plugged into the L-shaped rack 343, an L-shaped force block 347 is fixedly provided on the plug-in rack 346, and a pushing plate 348 corresponding to the force block 347 is fixedly provided on the first telescopic section 310. The vertical section of the force block 347 is pushed by the pushing plate 348 to move the L-shaped rack 343.

[0058] First, before performing the inspection operation, adjust the position of the movable table 340 on the inspection platform 1 left and right according to the size and length of the bar, and lock the movable table 340 to the inspection platform 1 by bolt locking, and then perform pre-positioning and tightening operations.

[0059] After the positioning plate 320 moves to cover the rod for positioning operation, the second telescopic section 311 of the multi-stage hydraulic rod 31 moves to the set position and stops moving. Then the first telescopic section 310 of the multi-stage hydraulic rod 31 is extended alone, and the first telescopic section 310 drives the clamping platform 330 thereon to approach the rod synchronously. Finally, the clamping platform 330 moves to contact the side of the rod. Through the left and right clamping actions of the left and right clamping platforms 330, the rod is adjusted to the center left and right and the left and right limiting is completed. Secondly, it should be additionally explained that during the movement of the positioning plate 320, the pushing block 342 is located at the set position and prevents the mounting ring 323 from driving the positioning plate 320 too close to the rod. It should be additionally explained that, through the cooperation between the push plate 348 and the vertical section of the force block 347, the force block 347 can only move in the direction close to the rod, and through the cooperation between the corresponding two racks 344 and the gear 345, the push block 342 can only move in the direction away from the rod. Therefore, the push block 342 has a blocking effect of preventing the mounting ring 323 from getting too close to the rod.

[0060] It should be noted that before the pressing platform 330 moves, the plug-in frame 346 is installed on the corresponding L-shaped frame 343 by plugging and installing. Then, during the movement of the pressing platform 330, the first telescopic section 310 drives the push plate 348 thereon to move synchronously, and the push plate 348 pushes the vertical section of the corresponding force-bearing block 347, thereby driving the corresponding L-shaped frame 343 and the corresponding upper side rack 344 to move synchronously. Through the engagement between the upper side rack 344 and the gear 345, the lower side rack 344 drives the U-shaped frame 341 away from the rod, and the U-shaped frame 341 drives the push block 342 thereon to push the mounting ring 323, so that the pressure spring 325 is compressed, and the mounting ring 323 is installed. The mounting ring 323 also drives the positioning plate 320 thereon to move away from the rod. Therefore, when the pressing platform 330 approaches the rod, the positioning plate 320 moves away from the rod. During the movement of the pressing platform 330, the pressing platform 330 drives the positioning posts 331 thereon to gradually pass through the corresponding through slots 333 on the positioning plate 320 and move to both sides of the top angle of the rod. That is, the two positioning posts 331 on the corresponding V-shaped frame 332 move to both sides of the top angle of the rod respectively. Therefore, as the pressing platform 330 presses against the rod, the triangular frame clamping of the rod is maintained by all the positioning posts 331 on the same side. At this point, the positioning plate 320 is separated from the end face of the rod, and the positioning posts 331 maintain the positioning of the rod.

[0061] After completing the overall inspection operation, all devices are reset, and the elastic force generated by the deformation of the pressure spring 325 causes the mounting ring 323 to move and reset, so that the two mounting rings 323 are reset between the left and right abutment platforms 330, facilitating subsequent positioning and inspection operations.

[0062] like Figure 3 and Figure 7 As shown, both of the abutting platforms 330 are provided with a fixed angle portion 35 for controlling the angle of the bar after being clamped. The fixed angle portion 35 includes a fixed plate 350. Three circumferentially distributed fixed plates 350 are fixedly provided on the opposite back surfaces of the two abutting platforms 330. A moving rod 351 is vertically slidably provided through the fixed plate 350. A positioning block 352 is fixedly provided on the moving rod 351. A reset spring 353 is fixedly provided between the positioning block 352 and the fixed plate 350 and is sleeved on the moving rod 351. Figure 8 As shown, when the positioning plate 320 that cooperates with the rod at a right angle is matched with the three blocking blocks 352 in sequence, the three end faces of the rod are facing upward in sequence, the blocking blocks 352 are triangular in shape and the top angle of the blocking blocks 352 is away from the axis of the clamping platform 330.

[0063] After the positioning column 331 completes the contact positioning of the rod, the three angles of the rod are all oriented to the set direction after the positioning operation. Then the rod is manually rotated, and the rod drives the positioning column 331 and the clamping platform 330 to rotate synchronously. At this time, the clamping platform 330 is located between the corresponding three positioning plates 320. The clamping platform 330 drives the positioning block 352 on it to rotate synchronously during the rotation process. The process of rotating a fixed angle of one of the positioning blocks 352 is used as an example to illustrate. The positioning block 352 gradually enters the V-shaped area of ​​the upper positioning plate 320 during the rotation process. The reset spring 353 set is in a compressed state. When the positioning block 352 moves to the position aligned with the positioning plate 320, the reset spring 353 is in a compressed state. 0 When the inner V-shaped area is fully fitted, the elastic force generated by the deformation of the return spring 353 makes the blocking block 352 and the positioning plate 320 fit tightly. At this time, the cooperation between the inner angle of the positioning plate 320 and the blocking block 352 is used as the detection angle reference, that is, the end face of the rod corresponding to the blocking block 352 is facing straight upwards. Then the CCD camera 2 takes pictures and samples to obtain sample data of the corresponding end face of the rod. Then the rod is continued to be rotated so that the above-mentioned blocking block 352 moves out of the V-shaped area of ​​the upper positioning plate 320. In summary, the shooting and sampling process of the three end faces of the rod is completed by the cooperation between the three blocking blocks 352 and the corresponding upper positioning plates 320 in turn.

[0064] like Figure 4 As shown, the left end face of the mounting strip 321 on the lower left side is fixedly provided with a plug-in rod 36, and the right end face of the mounting strip 321 on the lower right side is fixedly provided with a plug-in tube 360. The plug-in rod 36 is inserted into the plug-in tube 360, so that the left and right mounting rings 323 are integrated.

[0065] During the process of the mounting ring 323 driving the positioning plate 320 to move close to the rod and perform the positioning operation, the two mounting bars 321 on the lower side respectively drive the plug-in rod 36 and the plug-in tube 360 ​​to move synchronously, and finally the plug-in rod 36 is inserted into the plug-in tube 360, so that the positioning process of the left and right sides of the rod is integrated, ensuring that the rod can maintain a horizontal state from left to right, and ensuring the effectiveness of the information collected by the CCD camera 2.

[0066] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0067] 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 the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0068] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0069] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for processing nickel-white copper triangular bars, characterized in that: The following steps are involved: S1. Heating the ingot to form a triangular bar blank: heating the nickel-white copper ingot in a heating furnace, and preliminarily processing it into a triangular bar blank by die extrusion or groove rolling; S2. Diameter reduction treatment: Use a triangular drawing die to perform multiple diameter reduction treatments on the triangular bar blank to obtain a triangular bar; S3, annealing heat treatment: annealing heat treatment is performed on the triangular bar after the diameter reduction treatment; S4. Electroplating treatment: The triangular bar after heat treatment and cooling is subjected to surface electroplating treatment, and a layer of alloy coating is plated on the surface; S5. Quality inspection: perform quality inspection on the processed triangular bars; In step S5, the three end faces of the triangular bar are inspected in sequence using a detection device. The detection device includes a detection platform, a detection unit is provided on the detection platform and slides left and right and is located above the detection platform. The detection unit includes a CCD camera for quickly collecting image information of the bar surface. The detection platform is provided with a positioning mechanism, which includes a lifting platform. The upper end surface of the detection platform is provided with a lifting platform for supporting the bar. The detection platform is provided with two bilaterally symmetrical multi-stage hydraulic rods. The second telescopic section of the multi-stage hydraulic rod is provided with a pre-positioning portion, and the first telescopic section is provided with a tightening portion. The pre-positioning portion includes three V-shaped positioning plates that are slidably arranged on the second telescopic section and correspond to the top corners of the rod. The rod is positioned by fitting the V-shaped areas of the three positioning plates on the same side to the top corners of the rod. The abutting portion includes a abutting platform and a plurality of positioning posts arranged on the abutting platform. The left and right abutting platforms abut the bar material to position it in the left and right directions, and the plurality of positioning posts position the bar material in the circumferential direction. The lifting platform is provided with a switching part. When the pressing platform presses against the bar, the switching part causes the positioning plate to be reset and moved out, thereby maintaining the positioning of the bar while avoiding the image acquisition process. The pre-positioning portion further includes a mounting bar, wherein two mounting bars are fixedly provided on the second telescopic section and are symmetrical with each other. A mounting rod extending from left to right and slidingly passes through the mounting bar, and a mounting ring is fixedly provided on one side of the two mounting rods close to the lifting platform. The tightening part also includes a V-shaped frame, a tightening platform is rotatably arranged on the first telescopic section, and the two tightening platforms tighten the bars to the left and right directions to limit the bars. The tightening platforms are fixed with V-shaped frames corresponding to the positioning plates one by one, and the positioning columns are fixedly arranged on the branches of the V-shaped frame; The switching part includes a moving platform, and two moving platforms distributed on the left and right sides of the lifting platform are provided on the upper end surface of the detection platform. A U-shaped frame is provided on the moving platform for sliding left and right. A pushing block for pushing the mounting ring is fixedly provided on the two vertical sections of the U-shaped frame. Two front-to-back symmetrical L-shaped frames are provided for sliding left and right on the moving platform. Racks are fixedly provided between the two L-shaped frames and on the U-shaped frames. A gear rotatably provided on the moving platform is provided between the two racks, and the gear and the rack are meshed with each other. The switching part also includes a plug-in rack, which is plugged into the L-shaped rack, and an L-shaped force block is fixedly installed on the plug-in rack. A pushing plate corresponding to the force block is fixedly installed on the first telescopic section, and the L-shaped rack moves by pushing the vertical section of the force block through the pushing plate.

2. The method for processing nickel-white copper triangular bars according to claim 1, wherein: The three positioning plates on the same side together form a triangular frame. The longitudinal interface area formed by extending the inner end surfaces of the three positioning plates matches the longitudinal cross-section of the rod. The inner end surfaces of the positioning plates facing the lifting platform are chamfered.

3. The method for processing nickel-white copper triangular bars according to claim 1, wherein: A pressure spring sleeved on the mounting rod is fixedly arranged between the mounting ring and the mounting bar.

4. The method for processing nickel-white copper triangular bars according to claim 1, characterized in that: The same positioning plate corresponds to two positioning columns, and the corresponding two positioning columns are tightly attached to the end faces on both sides of the corresponding top angles on the rod. The rod is limited in a triangular manner by the contact between the two adjacent positioning columns and the corresponding top angles of the rod. The end face of the positioning plate close to the rod is provided with through grooves corresponding to the two positioning columns one by one.

5. The method for processing nickel-white copper triangular bars according to claim 1, characterized in that: Both of the abutting platforms are provided with a fixed angle portion for controlling the angle of the rod after being clamped. The fixed angle portion includes a fixed plate. Three circumferentially distributed fixed plates are fixedly provided on the opposite back surfaces of the two abutting platforms. A moving rod is vertically slidably provided on the fixed plate. A positioning block is fixed on the moving rod. A reset spring mounted on the moving rod is fixedly provided between the positioning block and the fixed plate.

6. The method for processing nickel-white copper triangular bars according to claim 5, characterized in that: When the positioning plate matched with the rod at a right angle is matched with the three blocking blocks in sequence, the three end faces of the rod are directed upwards in sequence, the blocking blocks are triangular in shape and the top angles of the blocking blocks are away from the axis of the pressing platform.

7. The method for processing nickel-white copper triangular bars according to claim 1, characterized in that: The left end surface of the mounting bar on the lower right side is fixed with a plug rod, and the right end surface of the mounting bar on the lower left side is fixed with a plug tube. The plug rod is inserted into the plug tube, so that the left and right mounting rings are integrated.

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