Nondestructive testing equipment for welding seam of nickel-titanium alloy wire and stainless steel medical composite guide wire

Abstract

The invention discloses nondestructive detection equipment for a welding seam of a nickel-titanium alloy wire and a stainless steel medical composite guide wire, and relates to the technical field of guide wire welding detection, the nondestructive detection equipment comprises a detection box, the detection box is internally provided with at least one group of detection channels, and the detection box is internally provided with an identification module and a detection module in sequence along the detection channels; the detection module is used for carrying out nondestructive detection on at least one welding part of the composite guide wire; the conveying frame is mounted in the detection channel and drives the to-be-detected composite guide wire to sequentially pass through the identification module and the detection module; the conveying frame comprises two groups of circulating frame bodies which are arranged in parallel, convex tooth parts which are continuously arranged are mounted on the outer side of each circulating frame body, and concave areas are arranged at the connecting parts of the adjacent convex tooth parts. When the composite guide wires are detected, a plurality of composite guide wires can be sequentially conveyed to the lower side of the detection module through the conveying frame, and welding parts of the composite guide wires can be identified and adjusted during conveying, so that the subsequent detection quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of guide wire welding detection, in particular to nondestructive detection equipment for welding seams of nickel-titanium alloy wires and stainless steel medical composite guide wires. Background Art

[0002] The nickel-titanium alloy wire and stainless steel are directly welded to form a composite guide wire, and the welding is uniform inside and outside the welding part, and the weld and the welding heat-affected zone are small. After forming, the joint obtained does not undergo brittle transition, and the superelasticity of the nickel-titanium alloy wire itself is not affected.

[0003] After the composite guide wire is formed, in order to improve the quality of the product, it is necessary to test the quality of the composite guide wire welding parts to achieve the purpose of control. In order not to damage the composite guide wire during testing, non-destructive testing is usually used.

[0004] After searching, a Chinese patent (publication number: CN118150694A) discloses an ultrasonic detection device for semiconductor defect detection, which includes a main body, an ultrasonic detection component, a control panel and a push-piece component. The ultrasonic detection component includes an ultrasonic detection head, which is used to emit and receive ultrasonic waves and transmit the signal to the control panel. A protective shell is fixed on the top of the main body; the ultrasonic detection component also includes a transmission component, an articulated seat and a first arm, the articulated seat and the first arm are movably connected by an axis, and the first arm and the second arm are movably connected by an axis, and the articulated seat, the first arm and the second arm are used to adjust the angle and position of the ultrasonic detection head.

[0005] In the prior art, when inspecting a composite guide wire, since its welding portion is small, high requirements are placed on the accuracy of the inspection portion. When the composite guide wire is in contact with a detection component, the composite guide wire needs to be kept in a suitable position. Therefore, the present invention proposes a nondestructive inspection device for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire. Summary of the invention

[0006] The purpose of the present invention is to provide a nondestructive testing device for welding seams of nickel-titanium alloy wires and stainless steel medical composite guide wires to solve the problems mentioned in the above background technology.

[0007] The present invention can be implemented by the following technical scheme: a nondestructive testing device for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire comprises a testing box, wherein at least one set of testing channels is arranged inside the testing box;

[0008] A conveyor frame is installed inside the detection channel. The conveyor frame includes two sets of circulating frames arranged in parallel. The two sets of circulating frames keep moving synchronously and a working gap is arranged between them.

[0009] The outer sides of the two groups of the circulation frames are both installed with continuously arranged convex tooth parts, and the connecting parts of the adjacent convex tooth parts are provided with recessed areas, and the recessed areas on the outer sides of the two groups of circulation frames are symmetrically arranged, that is, the connecting line of the two groups of recessed areas corresponding to the two groups of circulation frames is perpendicular to the moving direction of the two groups of circulation frames, and when the composite guide wire is tested, its two ends are set in the corresponding two groups of recessed areas, and the detection part of the composite guide wire is located inside the working gap of the two groups of circulation frames;

[0010] An indication module and a support platform are installed at the inner bottom end of the detection channel along the moving direction of the conveyor frame. The indication module is arranged between two sets of circulation frames in the conveyor frame and is used to generate an identification line on the lower side of the moving path of the composite guide wire.

[0011] An identification module and a detection module are sequentially installed at the top of the detection channel along the moving direction of the conveyor frame, and at least one set of correction modules and at least one set of rotation modules are sequentially installed at one side of the conveyor frame in the detection channel;

[0012] The supporting platform is located between the two sets of circulation frames and is arranged on the lower side of the detection module;

[0013] The correction module is arranged between the recognition module and the detection module, and the rotation module is arranged on one side of the detection module;

[0014] The identification module is used to identify the welding part and the identification line of the composite guide wire to be detected, and detect the distance difference between the welding part and the identification line of the composite guide wire to obtain the adjustment difference;

[0015] When the corresponding composite guide wire passes through, the correction module adjusts the position of the composite guide wire based on the adjustment difference, and adjusts the distance difference between the welding part of the composite guide wire and the identification line to within a preset threshold, thereby improving the subsequent detection quality;

[0016] After the composite guide wire moves to one side of the rotating module, the rotating module fixes the composite guide wire and rotates it, and the detection module detects at least one welding position of the composite guide wire.

[0017] A further technical improvement of the present invention is that: the correction module comprises a support frame, and horizontal drive mechanisms are installed on both the upper and lower sides of the support frame, and the output ends of the two sets of horizontal drive mechanisms are arranged opposite to each other and are both equipped with lifting mechanisms, and the moving directions of the output ends of the two sets of horizontal drive mechanisms are perpendicular to the moving direction of the circulation frame;

[0018] The output ends of the two groups of lifting mechanisms are arranged opposite to each other and are both equipped with clamping parts;

[0019] When in use, the two groups of clamping parts are respectively arranged on the upper and two sides of the composite guide wire, and the composite guide wire is clamped by a lifting mechanism. Finally, the composite guide wire is adjusted in a direction perpendicular to the moving direction of the circulating frame through a horizontal driving mechanism.

[0020] A further technical improvement of the present invention is that: the rotating module comprises a stroke cylinder, the output end of the stroke cylinder is arranged upward and is equipped with a rotating drive mechanism;

[0021] The output end of the rotary drive mechanism faces the conveying frame, and contact components are installed on both the upper and lower sides;

[0022] The two groups of contact components each include a connection portion connected to the rotary drive mechanism, and a displacement unit is installed on the opposite side of the two groups of connection portions. The output ends of the two groups of displacement units are arranged opposite to each other and are both installed with a clamping unit.

[0023] The two groups of clamping units are used to clamp the composite guide wire, and driven by the rotary drive mechanism, the composite guide wire is rotated so that different parts of the composite guide wire are brought into contact with the detection module.

[0024] A further technical improvement of the present invention is that: the detection module comprises a working unit and a contact head unit, the contact head unit and the working unit are connected via a lifting unit, and after the lifting unit is started, the contact head unit is brought into contact with the welding part of the composite guide wire;

[0025] The contact head unit is provided with three groups of detection areas, which respectively correspond to the nickel-titanium alloy wire portion, the welding portion and the stainless steel portion of the composite guide wire.

[0026] A further technical improvement of the present invention is that the detection method of the composite guide wire by the detection module comprises the following steps:

[0027] S1. The rotating module fixes the composite guide wire, and the contact head unit in the detection module descends based on the lifting unit and contacts the composite guide wire. After contact, the three groups of detection areas of the contact head unit contact the nickel-titanium alloy wire part, the welding part and the stainless steel part respectively;

[0028] S2, the detection module is started, and the first detection is performed, corresponding to the first part of the composite guide wire, and detection data a1, detection data b1 and detection data c1 are respectively obtained;

[0029] a1 is the test data of the nickel-titanium alloy wire part, a2 is the test data of the welding part, and a3 is the test data of the stainless steel part;

[0030] S3, the detection module is separated from the composite guide wire, and the rotation module drives the composite guide wire to rotate at a preset angle, where the preset angle is set based on the number of detection locations of a single composite guide wire welding location;

[0031] S4, repeat S2 and S3, detect the remaining detection parts of the composite guide wire, and obtain detection data an, detection data bn and detection data cn of the remaining parts of the composite guide wire, where n is a positive integer greater than 1;

[0032] S5. In a single test, a1.., an and c1.., cn of the composite guide wire are used as identification anchor points. When the corresponding test data of a1.., an and c1.., cn are all within the preset threshold range, the corresponding b1.., bn are taken as the test data of the corresponding part of the welding part;

[0033] S6. Identify the various detection data b1.., bn of the welding parts.

[0034] A further technical improvement of the present invention is that: the support platform comprises a plurality of lifting cylinders connected to the detection box, the output end of each lifting cylinder is upward, and a table is installed between them;

[0035] During testing, the table rises to the underside of the composite guide wire based on individual lifting cylinders and supports it from the bottom.

[0036] A further technical improvement of the present invention is that the nondestructive testing device further comprises a counterweight, which, when in use, is placed on the upper side of the corresponding conveying frame to fix the composite guide wire;

[0037] A first detachment rack is installed inside the detection box between the identification module and the detection module, and a second detachment rack is installed inside the detection box on a side of the detection module facing away from the identification module;

[0038] When the correction module adjusts the composite guide wire, the first separation frame separates the counterweight from the composite guide wire, and after the adjustment, the first separation frame resets the counterweight;

[0039] After the detection module detects the composite guide wire, the second separation frame separates the counterweight from the composite guide wire and moves it to the outside of the detection box.

[0040] A further technical improvement of the present invention is that: the counterweight member includes a counterweight plate, which is frame-shaped, and when the composite guide wire is fixed, the welding part of the composite guide wire is exposed, so that the indication module and the identification module can easily identify the position of the welding part of the composite guide wire;

[0041] The top of the counterweight plate is equipped with multiple connecting parts for connecting with the first detachment frame or the second detachment frame, and multiple embedded blocks are installed on both sides of the lower surface of the counterweight plate. The distribution position and size of each embedded block match the recessed area in each convex tooth part. During assembly, the counterweight is placed on the upper side of the two groups of circulation frames in the conveying frame, and each positioning side plate is embedded in the corresponding recessed area.

[0042] A further technical improvement of the present invention is that a rotatable contact roller is installed on the lower side of each embedded block through an elastic connector, so that when the rotating module drives the composite guide wire to rotate, the friction between the composite guide wire and the embedded block can be reduced.

[0043] A further technical improvement of the present invention is that: a limiting groove is provided on the upper side of each of the convex teeth, and a positioning side plate is installed on one side corresponding to each of the embedded blocks;

[0044] The size of the positioning side plate corresponds to the limiting groove;

[0045] When the counterweight is placed on the composite guide wire, the counterweight can be positioned and limited by positioning the side plates.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] When the composite guide wire is inspected, the present invention can sequentially transport multiple composite guide wires to the lower side of the inspection module through the transport frame, and during the transport, the welding position of the composite guide wire can be identified and adjusted, thereby improving the subsequent inspection quality;

[0048] Furthermore, during detection, the present invention can detect multiple parts of the composite guidewire, and while improving the detection quality, multiple identification anchor points can be set to monitor the detection data;

[0049] On the other hand, when moving the composite guide wire, the stability of the composite guide wire on the conveyor frame can be improved by the counterweight, and during detection, the composite guide wire can be supported in conjunction with the support platform, thereby improving the quality of contact between the contact head unit in the detection module and the composite guide wire, thereby further improving the detection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0051] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0052] Figure 2 For the present invention Figure 1 Schematic diagram of the structure of part A;

[0053] Figure 3 is a side sectional view of the detection box in Example 1 of the present invention;

[0054] Figure 4 It is a front cross-sectional view of the detection box in Example 1 of the present invention;

[0055] Figure 5 is a side sectional view of the detection box in Example 2 of the present invention;

[0056] Figure 6 It is a front cross-sectional view of the detection box of Example 2 of the present invention;

[0057] Figure 7 It is a front view of the counterweight in the present invention;

[0058] In the figure: 1. detection box; 2. counterweight; 3. conveying frame; 4. indication module; 5. identification module; 6. detection module; 7. correction module; 8. rotation module; 9. support platform; 10. first detachment frame; 11. second detachment frame; 31. circulation frame; 32. convex tooth part; 71. support frame; 72. horizontal drive mechanism; 73. lifting mechanism; 74. clamping part; 81. stroke cylinder; 82. rotation drive mechanism; 83. contact assembly; 91. lifting cylinder; 92. table; 21. counterweight plate; 22. embedded block; 23. contact roller; 24. positioning side plate. DETAILED DESCRIPTION

[0059] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0060] Example 1

[0061] See also Figure 1-4 As shown, the present invention provides a nondestructive testing device for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire, comprising a testing box 1, wherein a plurality of testing channels are arranged inside the testing box 1;

[0062] A conveyor frame 3 is installed inside the detection channel. The conveyor frame 3 includes two sets of circulating frames 31 arranged in parallel. The two sets of circulating frames 31 keep moving synchronously, and a working gap is set between them.

[0063] The outer sides of the two groups of circulation frames 31 are both installed with continuously arranged convex tooth parts 32, and the connecting parts of adjacent convex tooth parts 32 are provided with recessed areas, and the recessed areas on the outer sides of the two groups of circulation frames 31 are symmetrically arranged, that is, the connecting lines of the two groups of recessed areas corresponding to the two groups of circulation frames 31 are perpendicular to the moving directions of the two groups of circulation frames 31. When the composite guide wire is tested, its two ends are set in the corresponding two groups of recessed areas, and the detection part of the composite guide wire is located inside the working gap of the two groups of circulation frames 31;

[0064] An indication module 4 and a support platform 9 are installed at the inner bottom end of the detection channel along the moving direction of the conveyor frame 3. The indication module 4 is arranged between two sets of circulation frames 31 in the conveyor frame 3, and is used to generate an identification line on the lower side of the moving path of the composite guide wire;

[0065] An identification module 5 and a detection module 6 are sequentially installed at the top of the detection channel along the moving direction of the conveyor frame 3, and a group of correction modules 7 and a group of rotation modules 8 are sequentially installed on one side of the conveyor frame 3 in the detection channel;

[0066] In this embodiment, the detection module 6 selects a high-frequency ultrasonic device based on the diameter of the composite guidewire to improve the resolution;

[0067] The support platform 9 is located between the two sets of circulation frames 31 and is arranged on the lower side of the detection module 6;

[0068] The correction module 7 is arranged between the recognition module 5 and the detection module 6, and the rotation module 8 is arranged on one side of the detection module 6;

[0069] The identification module 5 is used to identify the welding part and the identification line of the composite guide wire to be detected, and detect the distance difference between the welding part and the identification line of the composite guide wire to obtain the adjustment difference;

[0070] When the corresponding composite guide wire passes through, the correction module 7 adjusts the position of the composite guide wire based on the adjustment difference, and adjusts the distance difference between the welding part of the composite guide wire and the identification line to within a preset threshold, thereby improving the subsequent detection quality;

[0071] After the composite guide wire moves to one side of the rotating module 8, the rotating module 8 fixes the composite guide wire and rotates it, and the detection module 6 detects the welding position of the composite guide wire.

[0072] See also Figure 3-4 As shown, the correction module 7 includes a support frame 71, and horizontal drive mechanisms 72 are installed on the upper and lower sides of the support frame 71. The horizontal drive mechanism 72 adopts a screw structure in this embodiment. The output ends of the two sets of horizontal drive mechanisms 72 are arranged opposite to each other, and are both equipped with a lifting mechanism 73, and the moving direction of the output ends of the two sets of horizontal drive mechanisms 72 is perpendicular to the moving direction of the circulation frame 31;

[0073] The output ends of the two sets of lifting mechanisms 73 are arranged opposite to each other and are both equipped with clamping members 74;

[0074] When in use, two groups of clamping members 74 are respectively arranged on the upper and two sides of the composite guide wire, and the composite guide wire is clamped by the lifting mechanism 73. Finally, the composite guide wire is adjusted in a direction perpendicular to the moving direction of the circulation frame 31 through the horizontal driving mechanism 72.

[0075] The rotating module 8 comprises a stroke cylinder 81, the output end of which is arranged upward and is provided with a rotating driving mechanism 82;

[0076] The output end of the rotary drive mechanism 82 faces the conveyor frame 3, and contact components 83 are installed on both the upper and lower sides;

[0077] The two groups of contact components 83 each include a connection portion connected to the rotation drive mechanism 82, and a displacement unit is installed on the opposite side of the two groups of connection portions. The output ends of the two groups of displacement units are arranged opposite to each other and are both installed with a clamping unit.

[0078] The two groups of clamping units move based on the displacement unit and clamp the composite guide wire, and driven by the rotary drive mechanism 82 , rotate the composite guide wire so that different parts of the composite guide wire are in contact with the detection module 6 .

[0079] The detection module 6 includes a working unit and a contact head unit. The contact head unit and the working unit are connected via a lifting unit. After the lifting unit is started, the contact head unit is brought into contact with the welding part of the composite guide wire.

[0080] The contact head unit is provided with three groups of detection areas, corresponding to the nickel-titanium alloy wire part, the welding part and the stainless steel part respectively.

[0081] The support platform 9 includes a plurality of lifting cylinders 91 connected to the detection box 1, the output ends of each lifting cylinder 91 are facing upward, and a table 92 is installed between them;

[0082] During inspection, the table 92 rises to the lower side of the composite guide wire based on the respective lifting cylinders 91 and supports it from the bottom.

[0083] When the present invention is used:

[0084] First, pre-treat the welding parts of the composite guide wire, including grinding and cleaning. If necessary, apply coupling agent to the nickel-titanium alloy wire parts, welding parts and stainless steel parts of the composite guide wire where they need to contact the contact head module of the detection module 6;

[0085] The composite guide wire to be tested is placed on a conveying frame 3 in a set of testing channels, and is placed on two sets of circulating frames 31 in the conveying frame 3, and the two ends of the composite guide wire are respectively mounted in corresponding recessed areas on the two sets of circulating frames 31;

[0086] Then the conveyor frame 3 drives the composite guide wire to move, and during the movement, the identification module 5 identifies the distance difference between the welding position of the composite guide wire and the identification line of the indication module 4, and obtains the adjustment difference;

[0087] After the conveying frame 3 drives the composite guide wire to move to one side of the correction module 7, the two groups of clamping members 74 in the correction module 7 clamp the composite guide wire based on their respective lifting mechanisms 73, and then the two groups of horizontal driving mechanisms 72 are synchronously started to drive the composite guide wire to move horizontally based on the adjustment difference, and at the same time, the identification module 5 monitors the moving position of the composite guide wire. After the movement is completed, the correction module 7 breaks contact with the composite guide wire, and the conveying frame 3 continues to drive the composite guide wire to move to the lower side of the detection module 6;

[0088] The detection module 6 is started to detect the composite guide wire, including the following steps:

[0089] The contact head unit in the detection module 6 is lowered based on the lifting unit and contacts the composite guide wire. After the contact, the three groups of detection areas of the contact head unit contact the nickel-titanium alloy wire part, the welding part and the stainless steel part respectively.

[0090] The detection module 6 is started to perform the first detection, corresponding to the first part of the composite guide wire, and obtains detection data a1, detection data b1 and detection data c1 respectively;

[0091] a1 is the test data of the nickel-titanium alloy wire part, a2 is the test data of the welding part, and a3 is the test data of the stainless steel part;

[0092] The detection module 6 is separated from the composite guide wire. In this embodiment, the welding part of the rotation module 8 is provided with three groups of detection parts distributed equidistantly on its outer side, that is, the adjacent detection parts differ by 120°, and the rotation module 8 drives the composite guide wire to rotate 120° at a time;

[0093] The rotating module 8 drives the composite guide wire to rotate 120°, and the detecting module 6 detects the second part of the composite guide wire to obtain detection data a2, detection data b2 and detection data c2;

[0094] Then the detection module 6 is separated from the composite guide wire again, and the rotation module 8 drives the composite guide wire to rotate 120° again. The detection module 6 detects the second part of the composite guide wire to obtain detection data a3, detection data b3 and detection data c3;

[0095] In the three tests, a1 and c1 of the composite guide wire are used as the identification anchor points of the first test, a2 and c2 are used as the identification anchor points of the second test, and a3 and c3 are used as the identification anchor points of the third test. When the detection data of each identification anchor point is within the preset threshold range during each test, the corresponding b1, b2, and b3 are used as the detection data of the corresponding parts of the welding part;

[0096] Finally, the inspection data of the welding parts are identified;

[0097] In this embodiment, the preset threshold for identifying the anchor point is based on the material and diameter of the corresponding nickel-titanium alloy wire portion and the stainless steel portion of the composite guide wire, and is obtained through experiments.

[0098] Example 2

[0099] See also Figure 5-7 As shown, the nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire comprises a testing box 1 and a counterweight 2, wherein a plurality of testing channels are arranged inside the testing box 1;

[0100] A conveyor frame 3 is installed inside the detection channel. The conveyor frame 3 includes two sets of circulating frames 31 arranged in parallel. The two sets of circulating frames 31 keep moving synchronously, and a working gap is set between them.

[0101] When in use, the counterweight 2 is placed on the upper side of the corresponding conveying frame 3 to fix the composite guide wire;

[0102] The outer sides of the two sets of circulation frames 31 are both installed with continuously arranged convex tooth parts 32, and the connecting parts of adjacent convex tooth parts 32 are provided with concave areas, and the concave areas on the outer sides of the two sets of circulation frames 31 are symmetrically arranged;

[0103] An indication module 4 and a support platform 9 are installed at the inner bottom end of the detection channel along the moving direction of the conveyor frame 3. The indication module 4 is arranged between two sets of circulation frames 31 in the conveyor frame 3, and is used to generate an identification line on the lower side of the moving path of the composite guide wire;

[0104] An identification module 5 and a detection module 6 are sequentially installed at the top of the detection channel along the moving direction of the conveyor frame 3, and a group of correction modules 7 and two groups of rotation modules 8 are sequentially installed on one side of the conveyor frame 3 in the detection channel;

[0105] The support platform 9 is located between the two sets of circulation frames 31 and is arranged on the lower side of the detection module 6;

[0106] A first detaching frame 10 is installed inside the detection box 1 between the identification module 5 and the detection module 6, and a second detaching frame 11 is installed inside the detection box 1 on the side of the detection module 6 facing away from the identification module 5;

[0107] In this embodiment, the first separation frame 10 includes a first driving module, a first connecting module is installed at the output end of the first driving module, and a first electromagnetic adsorption module is installed at the bottom end of the first connecting module;

[0108] In this embodiment, the moving path of the output end of the first driving module is parallel to the moving path of the conveying frame 3;

[0109] In this embodiment, the second separation frame 11 includes a second driving module, a plurality of second connection modules are installed at the output end of the second driving module, and a second electromagnetic adsorption module is installed at the bottom end of each second connection module;

[0110] The first connection module and the second connection module both include a lifting portion for contacting the counterweight 2;

[0111] The moving path of the output end of the second driving module is a circulation path, and a horizontal path parallel to the moving path of the conveying frame 3 is provided in the circulation path;

[0112] One end of the second driving module extends to the outside of the detection box 1, and a recovery structure is provided on the lower side thereof for recovering the counterweight 2;

[0113] The correction module 7 is arranged between the recognition module 5 and the detection module 6 , and the two groups of rotation modules 8 are arranged on both sides of the corresponding conveying frame 3 .

[0114] When the correction module 7 adjusts the composite guide wire, the first separation frame 10 separates the counterweight 2 from the composite guide wire, and after the adjustment, the first separation frame 10 resets the counterweight 2;

[0115] After the detection module 6 detects the composite guide wire, the second detaching frame 11 separates the counterweight 2 from the composite guide wire and moves it to the outside of the detection box 1 .

[0116] The counterweight 2 includes a counterweight plate 21, which is frame-shaped. When the composite guide wire is fixed, the welding part of the composite guide wire is exposed, so that the indication module 4 and the identification module 5 can easily identify the position of the welding part of the composite guide wire.

[0117] A plurality of connection parts are installed on the top of the counterweight plate 21, and a plurality of embedded blocks 22 are installed on both sides of the lower surface of the counterweight plate 21. The distribution position and size of each embedded block 22 match the recessed area in each convex tooth part 32. During assembly, the counterweight 2 is placed on the upper side of the two groups of circulation frames 31 in the conveying frame 3, and each positioning side plate 24 is respectively embedded in the corresponding recessed area.

[0118] A rotatable contact roller 23 is installed on the lower side of each embedded block 22, and an elastic connector is provided at the connection portion between the contact roller 23 and the embedded block 22. When the rotating module 8 drives the composite guide wire to rotate, the friction between the composite guide wire and the embedded block 22 can be reduced, and after the contact roller 23 contacts the composite guide wire, the elastic connector can allow the contact roller 23 to move within a certain range.

[0119] The rotation direction of the contact roller 23 is the same as the rotation direction of the composite guide wire based on the rotation module 8;

[0120] When in use, the composite guide wire is first placed on the conveying frame 3, and then the counterweight 2 is placed on the conveying frame 3, and the composite guide wire is fixed on the conveying frame 3;

[0121] Then the conveying frame 3 moves the counterweight 2 and the composite guide wire synchronously. When the composite guide wire needs to be adjusted when it moves to one side of the correction module 7, the first connection module in the first separation frame 10 is started, and connected with the connection part on the top of the counterweight 2 through the first electromagnetic adsorption module. Then the first driving module and the first connection module of the first separation frame 10 are started to move the counterweight 2 along the opening direction of each circulation frame 31, and separate the counterweight 2 from the composite guide wire;

[0122] After the correction module 7 adjusts the position of the composite guide wire, the first disengagement frame 10 resets the counterweight 2 to the upper side of the composite guide wire, and then the conveying frame 3 drives the composite guide wire to move to the lower side of the detection module 6, and the detection module 6 passes through the counterweight plate 21 in the counterweight 2 to detect the composite guide wire;

[0123] Finally, the conveying frame 3 drives the counterweight 2 to move to the lower side of the second detachment frame 11, and the second connection module in the second detachment frame 11 is started to assemble the second electromagnetic adsorption module at its bottom with the counterweight 2. Then the second driving module and the second connection module in the second detachment frame 11 are started to separate the counterweight 2 from the conveying frame 3. After the second detachment frame 11 moves the counterweight 2 to the recovery structure, it is separated from the counterweight 2, and the counterweight 2 can be recovered.

[0124] Example 3

[0125] Compared with Example 2, the counterweight 2 in Example 3 includes a counterweight plate 21, a plurality of magnetic connection parts are installed on the top of the counterweight plate 21, and a plurality of embedded blocks 22 are installed on both sides of the lower surface of the counterweight plate 21, and the distribution position and size of each embedded block 22 match the concave area in each convex tooth part 32;

[0126] A rotatable contact roller 23 is mounted on the lower side of each embedded block 22 via an elastic connector;

[0127] A limiting groove is provided on the upper side of each convex tooth portion 32, and a positioning side plate 24 is installed on the corresponding side of each embedded block 22;

[0128] The size of the positioning side plate 24 corresponds to the limiting groove;

[0129] When the counterweight 2 is placed on the composite guide wire, the counterweight 2 can be positioned and limited by positioning the side plates 24 .

[0130] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. Nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire, characterized in that: include: A detection box (1) is provided with at least one set of detection channels inside, and an identification module (5) and a detection module (6) are sequentially installed inside the detection box (1) along the detection channels, and the detection module (6) detects at least one welding position of the composite guide wire; A conveying frame (3) is installed inside the detection channel and drives the composite guide wire to pass through the identification module (5) and the detection module (6) in sequence; The conveying frame (3) comprises two sets of circulating frame bodies (31) arranged in parallel, the outer side of each circulating frame body (31) is provided with continuously arranged convex tooth parts (32), and the connecting parts of adjacent convex tooth parts (32) are provided with concave areas; An indication module (4) is arranged between the two sets of circulation frames (31) and generates an identification line on the lower side of the moving path of the composite guide wire; The identification module (5) identifies the welding part and the identification line of the composite guide wire, and detects the distance difference between the welding part and the identification line of the composite guide wire to obtain an adjustment difference; Correction modules (7), at least one group of the correction modules (7) is installed on one side of the conveying frame (3) and is arranged between the identification module (5) and the detection module (6); When the composite guide wire passes through, the correction module (7) adjusts the position of the composite guide wire based on the adjustment difference; Rotating modules (8), at least one group of the rotating modules (8) is installed on one side of the conveying frame (3) and is located on one side of the detection module (6); The supporting platform (9) is installed between the two sets of circulation frames (31) and is arranged on the lower side of the detection module (6).

2. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 1 is characterized in that: The detection module (6) detects the composite guide wire, comprising the following steps: S1, the rotating module (8) fixes the composite guide wire, and the detection module (6) contacts the nickel-titanium alloy wire portion, the welding portion and the stainless steel portion of the composite guide wire; S2, the detection module (6) is started to perform the first detection, corresponding to the first part of the composite guide wire, and respectively obtains detection data a1, detection data b1 and detection data c1; a1 is the test data of the nickel-titanium alloy wire part, a2 is the test data of the welding part, and a3 is the test data of the stainless steel part; S3, the detection module (6) is separated from the composite guide wire, and the rotation module (8) drives the composite guide wire to rotate at a preset angle based on the number of detection locations of the welding location; S4, repeat S2 and S3, detect the remaining detection parts of the composite guide wire, and obtain detection data an, detection data bn and detection data cn of the remaining parts of the composite guide wire; S5. In a single test, a1.., an and c1.., cn of the composite guide wire are used as identification anchor points. When the corresponding test data of a1.., an and c1.., cn are all within the preset threshold range, the corresponding b1.., bn are taken as the test data of the corresponding part of the welding part; S6. Identify the various detection data b1.., bn of the welding parts.

3. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 1 is characterized in that: The correction module (7) comprises a support frame (71), and horizontal drive mechanisms (72) are installed on both the upper and lower sides of the support frame (71), and the output ends of two groups of the horizontal drive mechanisms (72) are arranged opposite to each other and are both installed with lifting mechanisms (73); Furthermore, the moving directions of the output ends of the two sets of horizontal driving mechanisms (72) are perpendicular to the moving direction of the circulation frame (31); The opposite ends of the two sets of lifting mechanisms (73) are both equipped with clamping members (74).

4. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 1 is characterized in that: The rotating module (8) comprises a stroke cylinder (81), and a rotating driving mechanism (82) is mounted on the top end of the stroke cylinder (81); The output end of the rotary drive mechanism (82) faces the conveying frame (3), and contact components (83) are installed on both the upper and lower sides of the output end of the rotary drive mechanism (82).

5. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 1, characterized in that: It comprises a counterweight (2) which is placed on the upper side of a corresponding conveying frame (3) when in use.

6. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 5, characterized in that: A first detachment rack (10) is installed inside the detection box (1) between the identification module (5) and the detection module (6), and a second detachment rack (11) is installed inside the detection box (1) on a side of the detection module (6) facing away from the identification module (5); When the correction module (7) adjusts the composite guide wire, the first separation frame (10) separates the counterweight (2) from the composite guide wire, and after the adjustment, the first separation frame (10) resets the counterweight (2); After the detection module (6) detects the composite guide wire, the second separation frame (11) separates the counterweight (2) from the composite guide wire.

7. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 6, characterized in that: The counterweight (2) comprises a counterweight plate (21), and the counterweight plate (21) is frame-shaped; When placed on the upper side of the composite guide wire, the counterweight plate (21) exposes the welding portion of the composite guide wire; A plurality of connection parts connected to the first detachment frame (10) or the second detachment frame (11) are installed on the top of the counterweight plate (21); A plurality of embedded blocks (22) are installed on both sides of the lower surface of the counterweight plate (21), and the distribution position and size of each embedded block (22) match the distribution position and size of the recessed area in each convex tooth part (32).

8. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 7, characterized in that: A rotatable contact roller (23) is mounted on the lower side of each of the embedded blocks (22) via an elastic connection piece.

9. The nondestructive testing equipment for welding seams of nickel-titanium alloy wire and stainless steel medical composite guide wire according to claim 8, characterized in that: A limiting groove is provided on the upper side of each of the convex tooth portions (32), and a positioning side plate (24) is installed on a corresponding side of each of the embedded blocks (22); The size of the positioning side plate (24) corresponds to the limiting groove.

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