Search

CN-121972917-A - Strainer processing device and method

CN121972917ACN 121972917 ACN121972917 ACN 121972917ACN-121972917-A

Abstract

The invention provides a strainer processing device and a strainer processing method, which solve the problems that the wire straightening is easy to generate wavy defects in the traditional strainer processing, so that the welding quality is poor and the product is easy to lose efficacy. The method comprises six steps of wire preliminary straightening, directional detection and shaping, cooling and conveying, bending, welding and blanking storage, the wavy defects of a target bending area are detected in real time through a visual identification unit, a heating and shaping assembly is started in a targeted mode to carry out progressive extrusion shaping, meanwhile, the conveying speed is optimized, the shaping effect is ensured to be stable, and the device is arranged corresponding to the method and comprises a multi-wheel set straightening mechanism, a shaping assembly, a bending station, a welding station and a blanking storage mechanism which are sequentially arranged and cooperatively controlled by a control unit. The invention can effectively eliminate the wavy defects of the wire, avoid the problems of burn-through, cold joint and the like in the welding process, improve the strength and the sealing performance of the welding part and prolong the service life of the strainer.

Inventors

  • YANG WEIKANG

Assignees

  • 揭阳市利佳森不锈钢有限公司

Dates

Publication Date
20260505
Application Date
20260327

Claims (10)

  1. 1. The processing method of the strainer is characterized by comprising the following steps of: s1, straightening wires, namely primarily straightening the wires by adopting a multi-wheel set straightening mechanism; S2, directional detection and shaping are carried out, the wire rod subjected to preliminary straightening is sequentially sent into a first shaping unit and a transition unit, the lengths of the first shaping unit and the transition unit are consistent and equal to the wire rod length required by single processing, two groups of shaping modules are arranged on the first shaping unit, the shaping modules comprise visual identification units and are used for detecting the proportion of a plurality of wavy defects in two target bending areas in real time, when the proportion of the wavy defects is detected to be greater than a threshold value, a heating unit and an open-close type shaping piece corresponding to the target bending areas in the shaping modules are started, the heating unit is used for heating the target bending areas, and the shaping piece realizes progressive extrusion on the target bending areas in the process of passing through the closed shaping piece, so that the proportion of the wavy defects in the target bending areas is reduced below the threshold value; If the visual recognition unit detects that the wavy defect proportion is less than or equal to the threshold value, the heating unit and the shaping module are kept in a standby state, and the wire rod normally passes through the first shaping unit; S3, cooling and conveying, wherein a conveying structure in the transition unit realizes stable conveying of the wires, and meanwhile, the shaped wires are stably cooled by utilizing a progressive cooling module in the transition unit, so that a shaping effect is fixed; S4, bending, namely feeding the wire rod output by the transition unit into a bending station, and sequentially completing bending of a first branch part, bending of an arc part, bending of a second branch part and end shearing to obtain a blank which is formed preliminarily, wherein two target bending areas respectively correspond to the connecting areas of the two branch parts and the arc part of the blank; S5, welding, namely transferring the formed part after bending to a welding station, and welding a connecting area of the two branch parts and the arc part, namely a shaped target bending area; s6, blanking and storing.
  2. 2. The method according to claim 1, wherein the standard conveying speed V0 corresponding to the standard average value M0 of the amplitude values of the plurality of wavy defects is preset in the conveying structure in the step S3, the conveying structure adjusts the actual conveying speed v1=a×v0×m0/M1 according to the average value M1 of the amplitude values of the plurality of wavy defects in the two target bending areas, where a is an adjustment coefficient, and the single amplitude is a distance from the bus in the single wavy defect.
  3. 3. The method according to claim 2, wherein the conveying structure in step S3 is pre-configured with a standard conveying speed V0 corresponding to a standard chord width mean N0 of the plurality of wavy defects, the conveying structure adjusts an actual conveying speed v2=b×v0 (k1×m0/m1+k2×n1/N0) according to an actual chord width mean N1 of the plurality of wavy defects in the two target bending areas, wherein b is an adjustment coefficient, k1 and k2 are weight coefficients, k1+k2=1, and a single chord width is a width dimension of the wire when the wire exhibits a single wavy defect.
  4. 4. The method for processing the colander according to claim 3, wherein the number of the wavy defects in the two target bending areas, wherein the amplitude value F of the wavy defects is larger than M0, is d1, the chord width R of the wavy defects is smaller than N0, and the number of the wavy defects is d2, and the weight coefficients k1 and k2 meet k 1/k2=d1/d 2.
  5. 5. The method according to claim 4, wherein in step S3, the visual recognition unit uploads the largest wavy form factor a of the wavy defects in the two target bending areas to the conveying structure, and the conveying structure corrects V2 to B1 times according to a, wherein b1=c×a0/a, A0 is a reference threshold value of the wavy form factor, c is a correction factor inputted in advance, and a=f/R.
  6. 6. The strainer processing method according to claim 1, wherein a second shaping unit for shaping the arc part is arranged between the first shaping unit and the transition unit, Z reserved welding areas which are equidistantly distributed and have a distance of L are preset on the second shaping unit, the Z reserved welding areas are positioned between two target bending areas, and the distances from the two reserved welding areas at the front end and the rear end to the two adjacent target bending areas are L/2 respectively along the moving direction of the wire rod; The second shaping unit is provided with a Z group of shaping modules which are the same as those of the first shaping unit, and the Z group of shaping modules are used for shaping Z reserved welding areas of the arc part, so that the wavy defect proportion in the reserved welding areas is reduced below a welding threshold.
  7. 7. The method according to claim 6, wherein the lengths of the target bending area and the reserved welding area are larger than the welding length of each of the target bending area and the reserved welding area in actual welding, and the welding area in actual welding is positioned in the middle of the target bending area and the reserved welding area; the visual recognition unit recognizes the target bending region and the reserved welding region and recognizes the adjacent judgment regions at the same time, and the width of the judgment regions is consistent with that of the shaping piece; When the visual identification unit identifies that the maximum wave shape coefficient A1 in the plurality of wave-shaped defects in the judging area is larger than the safety threshold, and one end of the reserved welding area or the target bending area, which is far away from the shaping piece, completely enters the shaping piece, the shaping piece is opened while shaping is completed; when the visual recognition unit recognizes that the maximum wave shape coefficient A1 in the plurality of wave-shaped defects in the judging area is smaller than the safety threshold, and the reserved welding area or the target bending area completely penetrates out of the inside of the shaping piece, the shaping piece is opened.
  8. 8. The strainer processing device is used for realizing a strainer processing method and is characterized by comprising a multi-wheel set straightening mechanism, a shaping assembly, a bending station, a welding station and a discharging storage mechanism which are sequentially arranged and are electrically connected with a control unit, wherein the control unit is used for controlling all parts to cooperatively operate; the shaping assembly comprises a first shaping unit and a transition unit, wherein the first shaping unit is provided with two groups of shaping modules, and each group of shaping modules comprises a visual identification unit, a heating unit and an open-close shaping piece; The visual identification unit is used for detecting the wavy defect ratio of the two target bending areas on the wire rod; the heating unit is used for heating the target bending area with the wavy defect ratio larger than the threshold value; the shaping piece is used for progressively extruding and shaping the heated target bending area; The transition unit is internally provided with a conveying structure and a progressive cooling module, the conveying structure is used for realizing stable conveying of the wires, and the progressive cooling module is used for stably cooling the shaped wires to fix the shaping effect; The bending station is used for sequentially completing the bending of the first branch part, the bending of the circular arc part, the bending of the second branch part and the end shearing of the wire rod; The welding station is used for welding the connection areas of the two branch parts and the arc part of the blank; The blanking storage mechanism is used for blanking and storing the welded formed part.
  9. 9. The strainer processing apparatus according to claim 8, wherein the shaping member includes a fixed block and a movable block hinged to the fixed block, semi-shaping holes are provided in both the movable block and the fixed block, the wire is positioned in the semi-shaping holes of the fixed block when the fixed block is not engaged with the movable block, shaping through holes are formed in both the semi-shaping holes when the movable block is rotated and engaged with the fixed block, the wire penetrates through the shaping through holes, the shaping through holes are tapered through holes, and the diameter of the shaping through holes is gradually reduced along the conveying direction of the wire.
  10. 10. The strainer processing apparatus of claim 9, wherein the inlet end of the shaping bore is provided with a flare having a maximum diameter greater than 2 times the maximum historical amplitude of the wavy defect.

Description

Strainer processing device and method Technical Field The invention relates to the technical field of hardware kitchen ware processing, in particular to a strainer processing device and method. Background The strainer is a kitchen ware widely used in the fields of daily life and food processing, and the processing and manufacturing quality of the strainer directly determines the service performance and service life of the product. The mainstream colander in the market at present is mostly manufactured by adopting food-grade stainless steel wires, and the traditional processing technology mainly comprises wire straightening, bending and forming and end welding. The bending forming process is generally carried out by adopting multi-station progressive bending, namely, bending of the first branch part, bending of the circular arc part, bending of the second branch part and end shearing are sequentially completed, then the formed part is transferred to a welding station, and welding is carried out on the joint of the two branch parts and the circular arc part to form a closed annular member. In the process, the straightening process of the multi-wheel group or the roller group adopted in the prior art can improve the straightness of the wire rod, but the straightened wire rod has irregular wavy shape in the straightening mode, and the main factors of the process are that the internal grain orientation, dislocation density and residual stress of the stainless steel wire rod have fluctuation along the length direction after the stainless steel wire rod is prepared by drawing. Even for the same batch of wires, the fluctuation range of the yield strength and the elastic modulus can reach +/-3% -5%. The inconsistency of the mechanical properties can cause the difference of the rebound amounts of different sections when the wire is processed by the uniform straightening process parameters, thereby forming the wavy defect. The wave-shaped defect can influence the production process of the outer ring of the stainless steel funnel, particularly for a welding process, and can easily cause two uncontrollable attaching states of wave crest-wave crest and wave crest-wave trough when welding end parts are abutted, so that the problems of base metal burning through, microcrack, cold joint and the like are easily caused, and the problems of insufficient strength, poor sealing performance and easy breakage of products of the welding parts are caused. Disclosure of Invention The invention aims to provide a strainer processing device and a strainer processing method, which at least have the defects. In order to achieve the purpose, the invention provides the following technical scheme that the strainer processing method comprises the following steps: s1, straightening wires, namely primarily straightening the wires by adopting a multi-wheel set straightening mechanism; S2, directional detection and shaping are carried out, the wire rod subjected to preliminary straightening is sequentially sent into a first shaping unit and a transition unit, the lengths of the first shaping unit and the transition unit are consistent and equal to the wire rod length required by single processing, two groups of shaping modules are arranged on the first shaping unit, the shaping modules comprise visual identification units and are used for detecting the proportion of a plurality of wavy defects in two target bending areas in real time, when the proportion of the wavy defects is detected to be greater than a threshold value, a heating unit and an open-close type shaping piece corresponding to the target bending areas in the shaping modules are started, the heating unit is used for heating the target bending areas, and the shaping piece realizes progressive extrusion on the target bending areas in the process of passing through the closed shaping piece, so that the proportion of the wavy defects in the target bending areas is reduced below the threshold value; If the visual recognition unit detects that the wavy defect proportion is less than or equal to the threshold value, the heating unit and the shaping module are kept in a standby state, and the wire rod normally passes through the first shaping unit; S3, cooling and conveying, wherein a conveying structure in the transition unit realizes stable conveying of the wires, and meanwhile, the shaped wires are stably cooled by utilizing a progressive cooling module in the transition unit, so that a shaping effect is fixed; S4, bending, namely feeding the wire rod output by the transition unit into a bending station, and sequentially completing bending of a first branch part, bending of an arc part, bending of a second branch part and end shearing to obtain a blank which is formed preliminarily, wherein two target bending areas respectively correspond to the connecting areas of the two branch parts and the arc part of the blank; S5, welding, namely transferring the formed part after bending to a weldi