Nondestructive testing device for internal thread core head of precise pipe

Abstract

The utility model discloses a nondestructive testing device for an internal thread core head of a precise pipe, relates to the technical field of internal thread core head detection equipment, and aims to solve the problems that the conventional detection device is inconvenient to detect internal thread core heads with different specifications and sizes and has a relatively large error in clamping the internal thread core heads. The base is provided with a groove used for containing bulk amorphous alloy, and a push plate is further slidably connected into the groove. The PLC temperature control heating sheath is connected with an internal thread core head to be detected through a clamping mechanism; a lifting mechanism is also arranged on the PLC temperature control heating sheath; an auxiliary mechanism is further arranged on the base. A clamping mechanism is arranged on a PLC temperature control heating sheath, an auxiliary mechanism on a base is matched, an internal thread core head to be detected is placed in an arc-shaped groove in a supporting block, the internal thread core head is made to be matched with two sets of clamping blocks on the clamping mechanism, under the action of a driving screw, the two sets of clamping blocks clamp the internal thread core head, and the internal thread core head is made to be in a horizontal state all the time; and subsequent thread copying operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of internal thread core head detection equipment, in particular to a non-destructive detection device for the internal thread core head of a precision pipe. Background Art

[0002] Chinese patent CN100439902C discloses a non-destructive testing method and testing device for the internal thread core of a precision pipe, and the technical scheme adopted is: (1) selecting a large piece of amorphous alloy of appropriate size; (2) clamping the internal thread core with a pliers-shaped press head and placing it in a temperature-controlled heating sleeve to start heating; (3) placing a large piece of amorphous alloy billet into a groove of a base and introducing an inert gas; (4) driving the pliers-shaped press head with a screw to make the internal thread core head contact the amorphous alloy billet for reshaping; (5) unloading and taking out the large piece of amorphous alloy for cooling; the device comprises a pliers-shaped press head, an internal thread core head, a large piece of amorphous alloy, and a temperature-controlled heating sleeve, wherein the pliers-shaped press head, the internal thread core head, and the large piece of amorphous alloy are placed in the temperature-controlled heating sleeve, the pliers-shaped press head clamps the internal thread core head to be tested, and the internal thread core head is placed on the large piece of amorphous alloy.

[0003] The above technical scheme can realize non-destructive testing of the tooth profile parameters of the internal thread core head of precision copper, aluminum, zinc and other metal pipes; however, there are still the following shortcomings: the internal thread core head to be tested is clamped and limited by a pliers-shaped pressure head, but there are many specifications of existing internal thread core heads. When testing internal thread core heads of different specifications and sizes, it is necessary to replace the matching pliers-shaped pressure heads for clamping, which increases the testing time of the staff and has low efficiency; manually clamping the internal thread core head to be tested with the pliers-shaped pressure head is prone to large installation errors, resulting in tilting of the internal thread core head. When a large piece of amorphous alloy is copied, it is easy to cause incomplete thread replication, which has certain disadvantages.

[0004] Therefore, the present application provides a non-destructive testing device for the internal thread core head of a precision pipe to meet the needs. Utility Model Content

[0005] The purpose of the present application is to provide a nondestructive testing device for the internal thread core heads of precision pipes, aiming to solve the problem that the existing testing devices are inconvenient for testing the internal thread core heads of different specifications and sizes, and there are large errors in the clamping of the internal thread core heads.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a non-destructive testing device for an internal thread core head of a precision pipe, comprising a workbench and a PLC temperature-controlled heating sleeve, a support leg is provided at the bottom of the workbench, a base and a bracket are provided at the top of the workbench, and a detection element for detecting the internal thread core head is provided on the bracket;

[0007] The base is provided with a groove for placing large pieces of amorphous alloy, and a push plate is slidably connected in the groove, and the push plate is driven by a push rod. The base is also provided with a temperature sensor; the PLC temperature-controlled heating cover is provided above the base, and the PLC temperature-controlled heating cover is arranged on the workbench; the PLC temperature-controlled heating cover is connected to the internal thread core head to be tested through a clamping mechanism; the PLC temperature-controlled heating cover is also provided with a lifting mechanism for moving the internal thread core head to be tested in a vertical direction; the base is also provided with an auxiliary mechanism for cooperating with the clamping mechanism to clamp and limit the internal thread core head to be tested.

[0008] Preferably, the PLC temperature control heating cover is of split type, including a left part and a right part, the left part and the right part are slidably connected to the workbench, the workbench is provided with a slide rail for the left part and the right part to slide, the left part and the right part are also provided with handles for pulling, the facing surfaces of the left part and the right part are provided with convex edges, the lifting mechanism is arranged on the convex edge, and a sealing gasket is also provided between the left part and the right part. The PLC temperature control heating cover adopts a split design, which is convenient for the staff to open and close the PLC temperature control heating cover, and is also convenient for working when clamping the internal thread core head so that it corresponds to the position of the large piece of amorphous alloy, thereby improving the detection accuracy.

[0009] Preferably, the lifting mechanism includes a driving screw and a sliding sleeve, the driving screw is meshed on the PLC temperature control heating sleeve, the upper and lower ends of the driving screw are respectively located on the inner and outer sides of the PLC temperature control heating sleeve, the upper end of the driving screw is also provided with a limit sleeve, the lower end of the driving screw is rotatably connected to a slider, the inner wall of the PLC temperature control heating sleeve is also provided with the sliding sleeve corresponding to the position of the slider and matching the size, the slider is slidably connected in the sliding sleeve, and a clamping mechanism is provided on the PLC temperature control heating sleeve and cooperates with the auxiliary mechanism on the base to place the internal thread core head to be detected in the arc groove on the support block so that it cooperates with the two groups of clamping blocks on the clamping mechanism. Under the action of the driving screw, the two groups of clamping blocks clamp the internal thread core head, so that the internal thread core head is always in a horizontal state when the clamping limit is reached, which is convenient for subsequent thread replication operations.

[0010] Preferably, the clamping mechanism includes a mounting plate and a clamping block, the bottom of the slider protrudes from the sliding sleeve, and the bottom of the slider is connected to the mounting plate, the mounting plate is provided with a sliding groove for the clamping block to slide, and the sliding groove is provided with two groups and symmetrically arranged on both sides of the slider, the slider is also rotatably connected with a bidirectional screw, the bidirectional screw is provided with threaded sections with opposite rotation directions, and the two groups of clamping blocks are provided with threaded holes meshing with the threaded sections.

[0011] Preferably, the auxiliary mechanism includes a rotating frame and a supporting block. Rotating shafts are installed on the left and right sides of the base. The rotating frame is provided with kidney-shaped holes corresponding to the positions and matching the sizes of the rotating shafts. The rotating frame is also provided with the supporting block for the internal thread core head to be detected. An arc-shaped groove is formed on the facing surface of the supporting block and the clamping mechanism, and the arc-shaped groove corresponds to the position of the clamping mechanism.

[0012] Preferably, the rotating frame is a "冂"-shaped frame, including a vertical part and a horizontal part. The vertical part rotates around the rotating shaft through the kidney-shaped hole, and the supporting block is arranged on the horizontal part.

[0013] In summary, the technical effects and advantages of the present invention are as follows:

[0014] In the present invention, by arranging a clamping mechanism on the PLC temperature-controlled heating jacket and cooperating with the auxiliary mechanism on the base, the internal thread core head to be detected is placed in the arc-shaped groove on the supporting block, so that it cooperates with the two groups of clamping blocks on the clamping mechanism. Under the action of the driving screw, the two groups of clamping blocks clamp the internal thread core head, so that when the internal thread core head is clamped and limited, it is always in a horizontal state, which is convenient for subsequent thread replication operations.

[0015] In the present invention, the PLC temperature-controlled heating jacket adopts a split design, which is convenient for the staff to open and close the PLC temperature-controlled heating jacket. At the same time, it is also convenient for the work to make it correspond to the position of the bulk amorphous alloy when clamping the internal thread core head, improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a structural schematic diagram of the present invention;

[0018] Figure 2 is an internal structural schematic diagram of the present invention;

[0019] Figure 3 is a structural schematic diagram of the base of the present invention;

[0020] Figure 4 is a cross-sectional view of the base of the present invention;

[0021] Figure 5 is an exploded view of the lifting mechanism and the clamping mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the use state of the utility model;

[0023] Figure 7 It is a schematic diagram of the PLC temperature-controlled heating package of the utility model.

[0024] In the figure: 1, workbench; 11, slide rail; 12, support leg;

[0025] 2. PLC temperature-controlled heating cover; 21. Left part; 22. Right part; 23. Raised edge; 24. Handle;

[0026] 3. Bracket;

[0027] 4. Detection element;

[0028] 5. Lifting mechanism; 51. Driving screw; 52. Limiting sleeve; 53. Sliding block; 54. Sliding sleeve;

[0029] 6. Clamping mechanism; 61. Mounting plate; 62. Clamping block; 63. Bidirectional screw; 64. Slideway;

[0030] 7. base; 71. groove; 72. push plate; 73. push rod;

[0031] 8. Auxiliary mechanism; 81. Rotating frame; 82. Rotating shaft; 83. Support block; 84. Arc groove; 85. Waist-shaped hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0033] refer to Figure 1-7 The nondestructive testing device for the internal thread core of a precision pipe shown in the figure comprises a workbench 1 and a PLC temperature-controlled heating sleeve 2. The workbench 1 is provided with legs 12 at the bottom, and the workbench 1 is provided with a base 7 and a bracket 3 at the top. The base 7 is provided in the middle of the workbench 1, and the bracket 3 is located on one side of the workbench 1. The bracket 3 is provided with a detection element 4 for detecting the internal thread core, and the detection element 4 adopts a high-power optical microscope;

[0034] The base 7 is provided with a groove 71 for placing a large piece of amorphous alloy, and a push plate 72 is slidably connected in the groove 71. The cross-sectional size of the push plate 72 is the same as that of the groove 71. The push plate 72 is driven by a push rod 73. One end of the push rod 73 is connected to the push plate 72, and the other end protrudes from the base 7 and the workbench 1 and is located at the bottom of the workbench 1, so that the staff can push the push rod 73 to drive the push plate 72 to take the large piece of amorphous alloy out of the groove 71. The base 7 is also provided with a temperature sensor, which is used to detect the temperature in the closed space enclosed by the PLC temperature-controlled heating package 2 and the workbench 1;

[0035] The PLC temperature control heating cover 2 is provided above the base 7, and the PLC temperature control heating cover 2 is provided on the workbench 1; the PLC temperature control heating cover 2 is split, including a left part 21 and a right part 22, and the left part 21 and the right part 22 are slidably connected to the workbench 1, and a slide rail 11 for the left part 21 and the right part 22 to slide is provided on the workbench 1, and a handle 24 for pulling and a lock body for limiting the two are also provided on the left part 21 and the right part 22. The handle 24 can be used to pull the left part 21 and the right part 22 to slide in the slide rail 11, and the lock body can lock and limit the left part 21 and the right part 22. A convex edge 23 is provided on the facing surface of the left part 21 and the right part 22, and the lifting mechanism 5 is provided on the convex edge 23. A sealing gasket is also provided between the left part 21 and the right part 22.

[0036] The PLC temperature control heating sleeve 2 is also provided with a lifting mechanism 5 for driving the internal thread core head to be detected to move in the vertical direction; the lifting mechanism 5 includes a driving screw 51 and a sliding sleeve 54, the driving screw 51 is meshed with the PLC temperature control heating sleeve 2, and a threaded hole meshed with the driving screw 51 is provided on the left portion 21 of the PLC temperature control heating sleeve 2, and the upper and lower ends of the driving screw 51 are respectively located at the inner and outer sides of the PLC temperature control heating sleeve 2, and the upper end of the driving screw 51 is also provided with a limiting sleeve 52, which limits the position of the driving screw 51. The sleeve 52 can be used to control the distance that the driving screw 51 drives the clamping mechanism 6 to move downward. The lower end of the driving screw 51 is rotatably connected to a slider 53. A bearing seat is provided between the bottom of the driving screw 51 and the slider 53. The inner wall of the PLC temperature control heating sleeve 2 is also provided with a sleeve 54 corresponding to the position and matching the size of the slider 53. The slider 53 is slidably connected in the sleeve 54. The cross-section of the slider 53 is rectangular. The slider 53 can be driven by the driving screw 51 to move upward or downward in the sleeve 54.

[0037] The inner thread core head to be detected is connected to the PLC temperature control heating jacket 2 through a clamping mechanism 6; the clamping mechanism 6 includes a mounting plate 61 and clamping blocks 62. The bottom of the slider 53 protrudes from the sliding sleeve 54, and the mounting plate 61 is connected to the bottom of the slider 53. A sliding groove 64 for the clamping blocks 62 to slide is formed on the mounting plate 61. There are two groups of the sliding grooves 64, which are symmetrically arranged on both sides of the slider 53. A bidirectional screw 63 is also rotatably connected to the slider 53. Thread segments with opposite helix directions are formed on the bidirectional screw 63. Thread holes meshing with the thread segments are formed on the two groups of clamping blocks 62. When the bidirectional screw 63 rotates on the slider 53, due to the meshing relationship between the thread segments with opposite helix directions and the thread holes on the clamping blocks 62, the two groups of clamping blocks 62 can be driven to move towards or away from each other, so as to realize the clamping and limiting of the inner thread core head.

[0038] An auxiliary mechanism 8 for cooperating with the clamping mechanism 6 to clamp and limit the inner thread core head to be detected is further provided on the base 7. The auxiliary mechanism 8 includes a rotating frame 81 and a supporting block 83. Rotating shafts 82 are installed on the left and right sides of the base 7. A kidney-shaped hole 85 corresponding to the position and matching the size of the rotating shaft 82 is provided on the rotating frame 81. The setting of the kidney-shaped hole 85 enables the rotating frame 81 to rotate under the limitation of the rotating shaft 82. The supporting block 83 for the inner thread core head to be detected is further provided on the rotating frame 81. An arc-shaped groove 84 is formed on the facing surface of the supporting block 83 and the clamping mechanism 6. The arc-shaped groove 84 corresponds to the position of the clamping mechanism 6. The arc-shaped groove 84 can support and adjust the position of the inner thread core head, so that it is always in a horizontal state during the clamping and limiting process of the clamping mechanism 6, avoiding tilting and affecting the subsequent copying of the thread.

[0039] The rotating frame 81 is a "冂"-shaped frame, including a vertical part and a horizontal part. The vertical part rotates around the rotating shaft 82 through the kidney-shaped hole 85. The supporting block 83 is arranged on the horizontal part. During use, the part of the rotating frame 81 is perpendicular to the table surface of the workbench 1.

[0040] Working principle of the utility model: when using, the equipment is connected to the power supply, and the staff slides the right part 22 of the PLC temperature control heating sleeve 2 to the right through the handle 24, so that it slides in the slide rail 11 and separates from the left part 21, and rotates the rotating frame 81 to rotate around the hinge with the rotating shaft 82. The rotating frame 81 rotates 90 degrees, and the vertical part of the rotating frame 81 is perpendicular to the workbench 1. At this time, the support block 83 and the top surface of the workbench 1 are in a horizontal state, and the internal thread core head to be tested is placed in the arc groove 84. The staff rotates the driving screw 51 clockwise to make it rotate in the convex groove. The screw 51 is rotated on the edge 23, and the lower end of the driving screw 51 drives the slider 53 to slide downward in the sliding sleeve 54 by meshing with the threaded hole on the convex edge 23, thereby driving the mounting plate 61 to move downward, and driving the clamping block 62 to move downward. When the clamping block 62 corresponds to the side wall position of the internal thread core head to be detected, the rotation of the driving screw 51 is stopped, and the bidirectional screw 63 is rotated clockwise, and the threaded section on the bidirectional screw 63 is meshed with the threaded holes on the two groups of clamping blocks 62, so as to drive the two groups of clamping blocks 62 to move toward each other, and the internal thread core head is clamped and limited;

[0041] After the clamping is completed, the driving screw 51 is rotated counterclockwise to drive the internal thread core head to move upward, so that the internal thread core head is separated from the arc groove 84, and the rotating frame 81 is reset; a large piece of amorphous alloy matching the size of the internal thread core head to be detected is added to the groove 71 on the base 7, and then the driving screw 51 is rotated clockwise to drive the internal thread core head to move toward the large piece of amorphous alloy. When the distance between the internal thread core head and the large piece of amorphous alloy is less than 5 mm, the rotation of the driving screw 51 is stopped, and the right part 22 is reset by the handle 24, and the left part 2 1 and the right part 22, the workbench 1 enclose a closed space, and the base 7 is located in this space, the PLC temperature control heating sleeve 2 is energized, the large piece of amorphous alloy on the base 7 is heated, and after heating to a specified stable state, the driving screw 51 is rotated clockwise to drive the internal thread core head to move downward, and the threaded portion of the internal thread core head is copied onto the large piece of amorphous alloy. After the copying is completed, the driving screw 51 is driven to reset, the large piece of amorphous alloy is taken out and left to stand, and after cooling to room temperature, the threaded portion of the internal thread core head is detected by the detection element 4.

[0042] The electromechanical connection involved in the present utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of tests, which belongs to common knowledge.

[0043] Components not described in detail herein are prior art.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-destructive testing device for an internal thread core head of a precision pipe, comprising a workbench (1) and a PLC temperature-controlled heating sleeve (2), wherein the workbench (1) is provided with legs (12) at the bottom, the workbench (1) is provided with a base (7) and a bracket (3) at the top, and the bracket (3) is provided with a detection element (4) for detecting the internal thread core head; Features: The base (7) is provided with a groove (71) for placing a large piece of amorphous alloy, a push plate (72) is slidably connected in the groove (71), and the push plate (72) is driven by a push rod (73). A temperature sensor is also provided on the base (7); The PLC temperature-controlled heating sleeve (2) is provided above the base (7), and the PLC temperature-controlled heating sleeve (2) is provided on the workbench (1); The PLC temperature-controlled heating sleeve (2) is connected to the internal thread core head to be tested via a clamping mechanism (6); The PLC temperature-controlled heating sleeve (2) is also provided with a lifting mechanism (5) for driving the internal thread core head to be tested to move in a vertical direction; The base (7) is also provided with an auxiliary mechanism (8) for cooperating with the clamping mechanism (6) to clamp and limit the internal thread core head to be inspected.

2. The nondestructive testing device for the internal thread core of a precision pipe according to claim 1 is characterized in that: The PLC temperature-controlled heating sleeve (2) is of a split type, comprising a left portion (21) and a right portion (22); the left portion (21) and the right portion (22) are slidably connected to the workbench (1); a slide rail (11) is provided on the workbench (1) for the left portion (21) and the right portion (22) to slide; handles (24) for pulling are also provided on the left portion (21) and the right portion (22); a convex edge (23) is provided on the facing surfaces of the left portion (21) and the right portion (22); the lifting mechanism (5) is provided on the convex edge (23); and a sealing gasket is also provided between the left portion (21) and the right portion (22).

3. A nondestructive testing device for an internal thread core head of a precision pipe according to claim 1 or 2, characterized in that: The lifting mechanism (5) comprises a driving screw (51) and a sliding sleeve (54); the driving screw (51) is meshed with the PLC temperature-controlled heating sleeve (2); the upper and lower ends of the driving screw (51) are respectively located at the inner and outer sides of the PLC temperature-controlled heating sleeve (2); a limiting sleeve (52) is further provided at the upper end of the driving screw (51); a sliding block (53) is rotatably connected to the lower end of the driving screw (51); the sliding sleeve (54) corresponding in position and matching in size to the sliding block (53) is further provided on the inner wall of the PLC temperature-controlled heating sleeve (2); the sliding block (53) is slidably connected in the sliding sleeve (54).

4. The nondestructive testing device for the internal thread core of a precision pipe according to claim 3 is characterized in that: The clamping mechanism (6) includes a mounting plate (61) and clamping blocks (62). The bottom of the slider (53) protrudes from the sliding sleeve (54), and the mounting plate (61) is connected to the bottom of the slider (53). A sliding groove (64) for the clamping blocks (62) to slide is formed in the mounting plate (61). Two sets of the sliding grooves (64) are provided and symmetrically arranged on both sides of the slider (53). A bidirectional screw (63) is also rotatably connected to the slider (53). Thread sections with opposite helical directions are formed on the bidirectional screw (63). Thread holes meshing with the thread sections are formed in the two sets of clamping blocks (62).

5. The nondestructive testing device for the internal thread core of a precision pipe according to claim 1 is characterized in that: The auxiliary mechanism (8) includes a rotating frame (81) and a supporting block (83). Rotating shafts (82) are installed on the left and right sides of the base (7). The rotating frame (81) is provided with kidney-shaped holes (85) corresponding to the positions and matching the sizes of the rotating shafts (82). The rotating frame (81) is also provided with the supporting block (83) for the internal thread core head to be detected. Arc-shaped grooves (84) are formed on the facing surfaces of the supporting block (83) and the clamping mechanism (6). The arc-shaped grooves (84) correspond to the position of the clamping mechanism (6).

6. The nondestructive testing device for the internal thread core of a precision pipe according to claim 5 is characterized in that: The rotating frame (81) is a "冂"-shaped frame, including a vertical part and a horizontal part. The vertical part rotates around the rotating shaft (82) through the kidney-shaped holes (85). The supporting block (83) is arranged on the horizontal part.

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