Aperture detection mechanism for high-frequency welded pipe production

Abstract

The invention relates to the technical field of pipe detection equipment, and particularly discloses a caliber detection mechanism for high-frequency welded pipe production, which comprises a base, a pair of supports, a bearing track, a plurality of guide structures, a first detection structure and a second detection structure, tubes with different diameters can be adjusted for use within a certain range through the guiding and conveying structure, the tubes can penetrate through the first detection structure in the process of bearing and limiting movement through the guiding and conveying structure, a stress roller in the first detection structure makes contact with the tubes to drive the tubes to rotate, and the lengths of the tubes are detected along with movement of the tubes. When one end of a pipe is located on the first detection structure, the pipe is clamped to detect the diameter of the outer wall of the pipe, then the radius of the inner wall of a pipe opening is measured by means of the second detection structure, and adjustment can be effectively carried out according to pipe grooves with different diameters due to different pipe core heights. And flow data detection is carried out according to the outer wall diameter, the inner wall radius, the wall thickness and the length of the pipe.

Description

Technical Field

[0001] The invention relates to the technical field of pipe detection equipment, in particular to a caliber detection mechanism for high-frequency welded pipe production. Background Art

[0002] In the production process of high-frequency welded pipes, accurate detection of pipe diameter and related parameters is crucial to ensure product quality and meet industrial application requirements. However, there are many problems in existing detection technology and equipment that are difficult to ignore, which seriously restricts the development of the high-frequency welded pipe production industry. There are the following technical problems: Poor equipment versatility: Traditional high-frequency welded pipe diameter detection equipment is often designed for specific pipe diameters. When the diameter of the produced pipe changes, the equipment is difficult to adapt. For example, in some small pipe processing plants, if you want to detect high-frequency welded pipes of different diameters, you need to frequently replace the entire detection equipment, or spend a lot of time and energy to make complex adjustments to the equipment. This not only increases production costs, but also leads to a significant reduction in production efficiency, and cannot meet the diversified and large-scale production needs of modern industry.

[0003] Incomplete test data: Previous testing methods can usually only obtain some parameters of the pipe, making it difficult to conduct a comprehensive quality assessment of the pipe. For example, only the outer diameter of the pipe can be measured, but key parameters such as the inner wall radius and wall thickness of the pipe cannot be accurately tested. In fields such as construction and machinery manufacturing that have strict requirements on pipe quality, the lack of such comprehensive data makes it impossible to determine whether the pipe meets the use standards, which may bring hidden dangers to subsequent engineering safety and product performance. Summary of the invention

[0004] The object of the present invention is to provide a caliber detection mechanism for high-frequency welded pipe production to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above-mentioned problem, the present invention provides the following technical solutions: a caliber detection mechanism for high-frequency welded pipe production, comprising a base, a pair of supports, a bearing rail, a plurality of guiding structures, a first detection structure and a second detection structure; one end of a pair of the supports are respectively fixedly arranged on the upper wall of the base and located in the middle of the left and right ends, the bearing rail is an I-shaped structure, and the middle of the front and rear sides of the bearing rail is a concave structure, the two ends of the bearing rail are respectively fixedly arranged on the other end of a pair of supports, the plurality of guiding structures are respectively movably arranged on the bearing rail, the first detection structure is detachably arranged on the bearing rail and located between one of the pair of guiding structures, and the second detection structure is fixedly arranged on the first detection structure.

[0006] Preferably, the guiding structure includes a first slide, a first tightening bolt, a first roller frame, a first bearing arm, a first hydraulic cylinder, a second roller frame, a pair of guide rollers, a first motor, a pair of pulleys and a belt; the first slide is movably mounted on the bearing rail, the first tightening bolt is movably screwed into the front side wall of the first slide and fits in the middle of the bearing rail, the first roller frame is concave, the first roller frame is fixedly arranged in the middle of the upper wall of the first slide, one end of the first bearing arm is fixedly arranged in the middle of the front side wall of the first slide, and the other end of the first bearing arm is located at the front side of the first slide, One end of the first hydraulic cylinder is fixedly arranged on the other end of the first bearing arm, the second roller frame is L-shaped, one end of the second roller frame is fixedly arranged on the telescopic end of the first hydraulic cylinder, and the other end of the second roller frame is located above one end of the first roller frame, a pair of guide rollers are respectively movably arranged on the first roller frame and the second roller frame and are symmetrical to each other, the first motor is fixedly arranged on the front side wall of one end of the first roller frame and is located below the guide roller, a pair of pulleys are respectively fixedly arranged on the roller shaft at the driving end of the first motor and one end of one of the guide rollers, and both ends of the belt are respectively movably mounted on the pulleys.

[0007] Preferably, the first detection structure includes a second slide, a detection seat, a rotation stroke detector, a force roller, an infrared sensor and an outer diameter detection component; the second slide is the same as the first slide, the second slide is movably mounted on the load-bearing rail and fixed by a first tightening bolt, the detection seat is a concave cavity structure, the detection seat is fixedly arranged on the second slide, the rotation stroke detector is fixedly arranged in one end of the detection seat, the force roller is movably arranged in the middle of the detection seat, and the upper wall of the force roller and the middle upper wall of the guide roller on the first roller frame are in the same horizontal plane, the roller shaft of the force roller is connected to the rotation stroke detector, the infrared sensor is fixedly passed through the middle upper wall of the detection seat and is located on the right side of the force roller, and the outer diameter detection component is fixedly arranged on the front side of the detection seat.

[0008] Preferably, the outer diameter detection component includes a mounting seat, a controller, a second hydraulic cylinder, a lower pressure arm, a support plate and a first infrared rangefinder; the mounting seat is concave, one end of the mounting seat is fixedly arranged on the front side wall of the detection seat, the controller is fixedly arranged on the front side wall of the other end of the mounting seat, one end of the second hydraulic cylinder is fixedly arranged on the middle upper wall of the mounting seat, the lower pressure arm is Z-shaped, one end of the lower pressure arm is fixedly arranged on the telescopic end of the second hydraulic cylinder, the other end of the lower pressure arm is movably inserted in the middle of the detection seat, and a pressure sensor is arranged on the lower wall of the other end of the lower pressure arm, one end of the support plate is fixedly arranged on the inner front side wall of one end of the mounting seat, and is located on the rear side of the second hydraulic cylinder, and the first infrared rangefinder is fixedly arranged on the support plate and opposite to one end of the lower pressure arm.

[0009] Preferably, the second detection structure includes a second bearing arm, a cross-shaped slide rail, a telescopic plate, a chassis, a second motor, a flip arm and a second infrared rangefinder; one end of the second bearing arm is fixedly arranged on the rear wall of the detection seat, and the other end of the second bearing arm is located on the left side of the detection seat, the cross-shaped slide rail is fixedly arranged on the other end of the second bearing arm, one end of the telescopic plate is fixedly arranged on the cross-shaped slide rail, the chassis is fixedly arranged on the other end of the telescopic plate, the second motor is fixedly arranged in the chassis and the second motor driving end movably passes through the right side wall of the chassis, the flip arm is L-shaped, one end of the flip arm is fixedly arranged on the second motor driving end, the other end of the flip arm is movably inserted in the middle part of the detection seat and is located above the force roller, and the second infrared rangefinder is fixedly arranged on the upper wall of the other end of the flip arm.

[0010] Preferably, the guiding structure at the right end of the bearing track is the output end.

[0011] Preferably, the first infrared rangefinder is used to measure the outer wall diameter of the tube body.

[0012] Preferably, the second infrared rangefinder is used to measure the inner wall radius of the tube body.

[0013] The invention proposes a caliber detection mechanism for high-frequency welded pipe production, which has the beneficial effects of: different diameters of pipes can be adjusted within a certain range through the guide structure, and the pipe will pass through the first detection structure when it is carried and limited by the guide structure. The force roller in the first detection structure contacts and drives the pipe to rotate, and the length of the pipe is detected as the pipe moves. When one end of the pipe is located on the first detection structure, the pipe is clamped to detect the outer wall diameter of the pipe, and then the inner wall radius of the pipe mouth is measured with the help of the second detection structure, and it can effectively adjust according to the different core heights of pipe grooves of different diameters, and then perform process data detection according to the outer wall diameter, inner wall radius, wall thickness and pipe length of the pipe. In summary, the invention has the following effects: 1. The guiding structure can be adjusted within a certain range to adapt to pipes of different diameters. This means that the system does not need to frequently replace equipment or make large-scale adjustments for pipes of different diameters, and can realize the transportation and detection of pipes of various specifications. The second detection structure can be adjusted according to the different core heights of pipe grooves of different diameters, and can accurately measure the inner wall radius of the pipe mouth of pipes of different specifications.

[0014] 2. It can conduct comprehensive data detection on the outer wall diameter, inner wall radius, wall thickness and length of the pipe; the force roller in the first detection structure contacts and rotates with the pipe, and the length of the pipe is detected as the pipe moves; at the same time, when one end of the pipe is on the first detection structure, the pipe is clamped to detect the outer wall diameter of the pipe, and the inner wall radius of the pipe mouth is measured with the help of the second detection structure, and then the wall thickness of the pipe can be calculated. This multi-dimensional detection capability can comprehensively evaluate whether the quality and size of the pipe meet the standards, and provide detailed and accurate data support for the quality control of the pipe.

[0015] 3. Various tests can be carried out simultaneously while the pipe is being carried and limited by the guide structure. This real-time online detection method can promptly detect deviations and abnormalities in the pipe size during the production process, making it convenient for operators to adjust the production process parameters in time, avoiding the production of a large number of unqualified products, improving production efficiency and product quality, and quickly obtaining pipe data.

[0016] 4. The pipe is clamped and driven by the guiding structure to move and transport. The pipe completes various tests in sequence during the movement, realizing continuous transportation and testing. Compared with the traditional intermittent testing method, this continuous work process greatly shortens the testing time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly structure of the present invention; Figure 2 It is a schematic diagram of the split structure of the guide structure of the present invention; Figure 3 It is a schematic diagram of the assembly structure of the guide structure of the present invention; Figure 4 It is a schematic diagram of the split structure of the first detection structure of the present invention; Figure 5 This is a schematic diagram of the assembly structure of the first detection structure of the present invention; Figure 6 It is a schematic diagram of the split structure of the second detection structure of the present invention; Figure 7 This is a schematic diagram of the assembly structure of the second detection structure of the present invention; Figure 8 The present invention is a schematic diagram of the detection structure.

[0018] In the figure: 1, base; 2, support; 3, bearing track; 4, guiding structure; 40, first slide; 41, first tightening bolt; 42, first roller frame; 43, first bearing arm; 44, first hydraulic cylinder; 45, second roller frame; 46, guiding roller; 47, first motor; 48, pulley; 49, belt; 5, first detection structure; 51, second slide; 52, detection seat; 53, rotation stroke detector; 54, force roller; 55, infrared sensor; 56, outer diameter detection component; 561, mounting seat; 562, controller; 563, second hydraulic cylinder; 564, lower pressure arm; 565, support plate; 566, first infrared rangefinder; 6, second detection structure; 61, second bearing arm; 62, cross slide; 63, telescopic plate; 64, chassis; 65, second motor; 66, flip arm; 67, second infrared rangefinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 8 The present invention provides a technical solution: a caliber detection mechanism for high-frequency welded pipe production, comprising a base 1, a pair of supports 2, a bearing rail 3, a plurality of guide structures 4, a first detection structure 5 and a second detection structure 6; the base 1 is rectangular, one end of a pair of supports 2 is respectively fixedly arranged on the upper wall of the base 1 and located in the middle of the left and right ends, the bearing rail 3 is an I-shaped structure, and the middle of the front and rear sides of the bearing rail 3 is a concave structure, the two ends of the bearing rail 3 are respectively fixedly arranged on the other end of the pair of supports 2, the plurality of guide structures 4 are respectively movably arranged on the bearing rail 3, and the first detection structure 5 can be detachably placed On the bearing rail 3 and between one pair of guiding structures 4, the second detection structure 6 is fixedly arranged on the first detection structure 5; the bearing rail 3 is supported by the support 2 on the base 1, and multiple guiding structures 4 and the first detection structure 5 are installed through the bearing rail 3. The pipe is limited by the guiding structure 4, the length and outer wall diameter of the pipe are detected by the first detection structure 5, and the inner wall radius of the pipe is detected by the second detection structure 6, so as to obtain the wall thickness of the pipe. The guiding structure 4 at the right end of the bearing rail 3 is the output end, which is used to realize left-in and right-out according to design requirements, and is convenient for measuring the length and limiting the position of the pipe.

[0021] As a further solution of the present invention, the guiding structure 4 includes a first slide 40, a first tightening bolt 41, a first roller frame 42, a first bearing arm 43, a first hydraulic cylinder 44, a second roller frame 45, a pair of guide rollers 46, a first motor 47, a pair of pulleys 48 and a belt 49; the first slide 40 is movably mounted on the bearing rail 3, the first tightening bolt 41 is movably screwed into the front side wall of the first slide 40 and fits with the middle part of the bearing rail 3, the first roller frame 42 is concave, the first roller frame 42 is fixedly arranged in the middle part of the upper wall of the first slide 40, one end of the first bearing arm 43 is fixedly arranged in the middle part of the front side wall of the first slide 40, and the other end of the first bearing arm 43 is located on the front side of the first slide 40, one end of the first hydraulic cylinder 44 is fixedly arranged on the other end of the first bearing arm 43, the second roller frame 45 is L-shaped, and one end of the second roller frame 45 is fixedly arranged at The first hydraulic cylinder 44 is on the telescopic end, and the other end of the second roller frame 45 is located above one end of the first roller frame 42. A pair of guide rollers 46 are movably arranged on the first roller frame 42 and the second roller frame 45 and are symmetrical to each other. The first motor 47 is fixedly arranged on the front side wall of one end of the first roller frame 42 and is located below the guide roller 46. A pair of pulleys 48 are fixedly arranged on the driving end of the first motor 47 and the roller shaft at one end of one of the guide rollers 46. The two ends of the belt 49 are movably mounted on the pulleys 48 respectively; the first slide 40 can be moved and adjusted on the load-bearing track 3 through the first slide 40 and limited by the first tightening bolt 41. It is driven by the first motor 47, and the guide roller 46 on the first roller frame 42 is driven to rotate through the pulley 48 and the belt 49 to apply force to the pipe. The guide roller 46 on the second roller frame 45 is driven to descend and clamp the pipe through the first hydraulic cylinder 44.

[0022] As a further solution of the present invention, the first detection structure 5 includes a second slide 51, a detection seat 52, a rotation stroke detector 53, a force roller 54, an infrared sensor 55 and an outer diameter detection component 56; the second slide 51 is the same as the first slide 40, the second slide 51 is movably mounted on the bearing rail 3 and fixed by the first tightening bolt 41, the detection seat 52 is a concave cavity structure, the detection seat 52 is fixedly arranged on the second slide 51, the rotation stroke detector 53 is fixedly arranged in one end of the detection seat 52, the force roller 54 is movably arranged in the middle of the detection seat 52, and the upper wall of the force roller 54 is in the same horizontal plane as the upper wall of the middle part of the guide roller 46 on the first roller frame 42, and the roller shaft of the force roller 54 is aligned with the rotation stroke detector 53. The travel detector 53 is connected, the infrared sensor 55 is fixedly passed through the upper wall of the middle part of the detection seat 52 and is located on the right side of the force roller 54, and the outer diameter detection component 56 is fixedly arranged on the front side of the detection seat 52; the position is moved and adjusted on the bearing rail 3 by the second slide 51, and the pipe is carried by the force roller 54. When the pipe passes through the detection seat 52, the force roller 54 is driven to rotate, and the rotation driven by the force roller 54 forms a detector rotation to detect the rotation circumference, that is, calculate the length of the pipe, and sense the pipe entering the detection seat 52 through the infrared sensor 55. The outer diameter detection is used to detect the outer wall diameter of the pipe. In order to realize the detection of the outer wall diameter of the pipe, the transmitting end of the first infrared rangefinder 566 and the force roller 54 are avoided to be in the same horizontal plane.

[0023] As a further solution of the present invention, the outer diameter detection component 56 includes a mounting seat 561, a controller 562, a second hydraulic cylinder 563, a lower pressure arm 564, a support plate 565 and a first infrared rangefinder 566; the mounting seat 561 is concave, one end of the mounting seat 561 is fixedly arranged on the front side wall of the detection seat 52, the controller 562 is fixedly arranged on the front side wall of the other end of the mounting seat 561, and the controller 562 is provided with a display screen and a control keyboard, one end of the second hydraulic cylinder 563 is fixedly arranged on the middle upper wall of the mounting seat 561, the lower pressure arm 564 is Z-shaped, and one end of the lower pressure arm 564 is fixedly arranged It is placed on the telescopic end of the second hydraulic cylinder 563, and the other end of the lower pressure arm 564 is movably inserted in the middle of the detection seat 52. One end of the support plate 565 is fixedly arranged on the inner front side wall of one end of the mounting seat 561 and is located on the rear side of the second hydraulic cylinder 563. The first infrared rangefinder 566 is fixedly arranged on the support plate 565 and is opposite to one end of the lower pressure arm 564. The equipment is controlled by the controller 562, and the lower pressure arm 564 is driven by the second hydraulic cylinder 563 to clamp the pipe. The first infrared rangefinder 566 is used to measure the outer wall diameter of the pipe body relative to one end of the lower pressure arm 564.

[0024] As a further solution of the present invention, the second detection structure 6 includes a second carrying arm 61, a cross-shaped slide rail 62, a telescopic plate 63, a chassis 64, a second motor 65, a flip arm 66 and a second infrared rangefinder 67; one end of the second carrying arm 61 is fixedly arranged on the rear side wall of the detection seat 52, and the other end of the second carrying arm 61 is located on the left side of the detection seat 52, the cross-shaped slide rail 62 is fixedly arranged on the other end of the second carrying arm 61, one end of the telescopic plate 63 is fixedly arranged on the cross-shaped slide rail 62, and the telescopic plate 63 can move left and right and move up and down, the chassis 64 is fixedly arranged on the other end of the telescopic plate 63, and the second motor 65 is fixedly arranged on the chassis 64 and the driving end of the second motor 65 movably penetrates the right side wall of the chassis 64, the flip arm 66 is L-shaped, one end of the flip arm 66 is fixedly set on the driving end of the second motor 65, and the other end of the flip arm 66 is movably inserted in the middle of the detection seat 52 and is located above the force roller 54, and the second infrared rangefinder 67 is fixedly set on the upper wall of the other end of the flip arm 66; the second infrared rangefinder 67 on the telescopic plate 63 is driven to rise and fall and move left and right through the cross-shaped slide rail 62, and the second infrared rangefinder 67 is inserted into the pipe through the flip arm 66 to measure the inner wall radius. The second infrared rangefinder 67 is used to measure the inner wall radius of the pipe body for design and use requirements.

[0025] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0026] First, the controller 562 in the first detection structure 5 controls the device to input the pipe from the left end of the bearing track 3 supported by the support 2 and output it from the right end for use; The pipes are passed through the middle of the multiple guide structures 4 and the detection seat 52 of the first detection structure 5. Since the force roller 54 and the upper wall of the guide roller 46 on the first roller frame 42 are in the same plane, the pipes are transported and contacted horizontally. The first hydraulic cylinder 44 on the first bearing arm 43 is driven to contract and drive the guide roller 46 on the second roller frame 45 to descend, so that the pipes are clamped between the guide rollers 46, and then the first motor 47 on the first roller frame 42 is driven to drive the guide roller 46 on the first roller frame 42 to rotate through the transmission of the pulley 48 and the belt 49, so that the pipes are forced to move to the right between the two guide rollers 46. Pipes with different diameters descend to different heights of the second roller frame 45. The setting spacing and position of the guide structure 4 can be adjusted according to actual needs, that is, the first sliding seat 40 is moved on the bearing rail 3, and then fixed by the first tightening bolt 41; the same principle is adopted, and the detection seat 52 in the first detection structure 5 is placed and fixed on the bearing rail 3 by the second sliding seat 51; When the pipe enters the middle of the detection seat 52 and contacts the force roller 54, it moves to the right. When the pipe passes through the force roller 54, it will be sensed by the infrared sensor 55, and then the driving guide structure 4 will stop. At this time, the pipe stays on the equipment through the limit, and the stroke of the force roller 54 rotated by force is calculated by the rotation stroke detector 53 and displayed on the controller 562. The length of the running pipe, that is, the length of the pipe from the contact with the force roller 54 to the start of movement; Then the device drives the second hydraulic cylinder 563 on the mounting seat 561 in the outer diameter detection component 56 to contract and drive the lower pressing arm 564 to descend. The other end of the lower pressing arm 564 is provided with a pressure sensor. When the other end of the lower pressing arm 564 contacts the upper wall of the pipe, it stops. At this time, the first infrared rangefinder 566 detects (such as Figure 8 As shown in the figure, the distance between the first infrared rangefinder 566 and one end of the lower pressure arm 564, that is, the distance between the force roller 54 and one end of the lower pressure arm 564 is A. Since the distance B between the lower wall surface of the end of the lower pressure arm 564 in contact with the pipe and the lower wall surface of the end of the lower pressure arm 564 connected to the second hydraulic cylinder 563 remains unchanged, and the upper and lower side walls of the pipe are located between the force roller 54 and the lower pressure arm 564, the outer wall diameter of the pipe is A minus B, that is, the outer wall diameter of the pipe is C. Then, the cross-shaped slide rail 62 supported by the second bearing arm 61 in the second detection structure 6 is driven, and the telescopic plate 63 and the flip arm 66 are driven to move up and down and left and right through the cross-shaped slide rail 62; at this time, due to the outer wall diameter of the pipe, the center position of the pipe mouth of the pipe is relatively obtained, that is, the height of the center of the pipe mouth above the force roller 54, and then the height of the flip arm 66 is adjusted with the help of the cross-shaped slide rail 62, so that the second infrared rangefinder 67 is located at the height position of the center of the pipe mouth, and then the flip arm 66 is driven by the telescopic plate 63 to insert into one end of the pipe located in the middle of the detection seat 52, and the radius distance of the inner wall of the pipe is measured by the second infrared rangefinder 67, as shown in FIG. Figure 8 The D shown in the figure is the wall thickness of the pipe obtained by subtracting D from half of the diameter C. Figure 8 E shown, and then the corresponding outer wall diameter, inner wall diameter and wall thickness of the pipe are obtained; After measuring the inner wall diameter, the flip arm 66 is separated from the pipe, and the second motor 65 in the chassis 64 is driven to drive the flip arm 66 to flip 90 or 180 degrees to prevent the pipe from being blocked; the guiding structure 4 can be driven again to transport the pipe to the right. When the pipe is separated from the force roller 54, the length data of the pipe can be obtained by the rotation of the force roller 54.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A caliber detection mechanism for high-frequency welded pipe production, characterized in that: It comprises a base (1), a pair of supports (2), a bearing track (3), a plurality of guide structures (4), a first detection structure (5) and a second detection structure (6); One end of a pair of the supports (2) is respectively fixedly arranged on the upper wall of the base (1) and is located in the middle of the left and right ends; the bearing rail (3) is an I-shaped structure, and the middle of the front and rear sides of the bearing rail (3) is a concave structure; the two ends of the bearing rail (3) are respectively fixedly arranged on the other end of the pair of supports (2); a plurality of the guide structures (4) are respectively movably arranged on the bearing rail (3); the first detection structure (5) is detachably arranged on the bearing rail (3) and is located between one of the pair of guide structures (4); and the second detection structure (6) is fixedly arranged on the first detection structure (5).

2. The caliber detection mechanism for high-frequency welded pipe production according to claim 1 is characterized in that: The guide structure (4) comprises a first slide seat (40), a first tightening bolt (41), a first roller frame (42), a first bearing arm (43), a first hydraulic cylinder (44), a second roller frame (45), a pair of guide rollers (46), a first motor (47), a pair of pulleys (48) and a belt (49); The first slide (40) is movably mounted on the bearing rail (3); the first tightening bolt (41) is movably screwed into the front side wall of the first slide (40) and fits with the middle of the bearing rail (3); the first roller frame (42) is concave; the first roller frame (42) is fixedly arranged in the middle of the upper wall of the first slide (40); one end of the first bearing arm (43) is fixedly arranged in the middle of the front side wall of the first slide (40); the other end of the first bearing arm (43) is located at the front side of the first slide (40); one end of the first hydraulic cylinder (44) is fixedly arranged on the other end of the first bearing arm (43); the second roller frame (45) is L-shaped; One end of the second roller frame (45) is fixedly arranged on the telescopic end of the first hydraulic cylinder (44), and the other end of the second roller frame (45) is located above one end of the first roller frame (42). A pair of guide rollers (46) are movably arranged on the first roller frame (42) and the second roller frame (45) and are symmetrical to each other. The first motor (47) is fixedly arranged on the front side wall of one end of the first roller frame (42) and is located below the guide roller (46). A pair of pulleys (48) are fixedly arranged on the driving end of the first motor (47) and on the roller shaft at one end of one of the guide rollers (46). Both ends of the belt (49) are movably mounted on the pulleys (48).

3. The caliber detection mechanism for high-frequency welded pipe production according to claim 2 is characterized in that: The first detection structure (5) comprises a second sliding seat (51), a detection seat (52), a rotation stroke detector (53), a force-bearing roller (54), an infrared sensor (55), and an outer diameter detection component (56); The second slide (51) is the same as the first slide (40). The second slide (51) is movably mounted on the bearing rail (3) and fixed by a first tightening bolt (41). The detection seat (52) is a concave cavity structure. The detection seat (52) is fixedly arranged on the second slide (51). The rotation stroke detector (53) is fixedly arranged in one end of the detection seat (52). The force roller (54) is movably arranged in the middle of the detection seat (52). The upper wall of the force roller (54) and the middle upper wall of the guide roller (46) on the first roller frame (42) are in the same horizontal plane. The roller shaft of the force roller (54) is connected to the rotation stroke detector (53). The infrared sensor (55) is fixedly passed through the middle upper wall of the detection seat (52) and is located on the right side of the force roller (54). The outer diameter detection component (56) is fixedly arranged on the front side of the detection seat (52).

4. The caliber detection mechanism for high-frequency welded pipe production according to claim 3 is characterized in that: The outer diameter detection component (56) comprises a mounting seat (561), a controller (562), a second hydraulic cylinder (563), a lower pressing arm (564), a supporting plate (565), and a first infrared rangefinder (566); The mounting seat (561) is concave, one end of the mounting seat (561) is fixedly arranged on the front side wall of the detection seat (52), the controller (562) is fixedly arranged on the front side wall of the other end of the mounting seat (561), one end of the second hydraulic cylinder (563) is fixedly arranged on the middle upper wall of the mounting seat (561), the lower pressure arm (564) is Z-shaped, one end of the lower pressure arm (564) is fixedly arranged on the telescopic end of the second hydraulic cylinder (563), the other end of the lower pressure arm (564) is movably inserted in the middle of the detection seat (52), and a pressure sensor is arranged on the lower wall of the other end of the lower pressure arm (564); one end of the support plate (565) is fixedly arranged on the inner front side wall of one end of the mounting seat (561) and is located at the rear side of the second hydraulic cylinder (563); the first infrared rangefinder (566) is fixedly arranged on the support plate (565) and is opposite to one end of the lower pressure arm (564).

5. The caliber detection mechanism for high-frequency welded pipe production according to claim 4 is characterized in that: The second detection structure (6) comprises a second carrying arm (61), a cross-shaped slide rail (62), a telescopic plate (63), a chassis (64), a second motor (65), a flip arm (66), and a second infrared rangefinder (67); One end of the second bearing arm (61) is fixedly arranged on the rear side wall of the detection seat (52), and the other end of the second bearing arm (61) is located on the left side of the detection seat (52); the cross-shaped slide rail (62) is fixedly arranged on the other end of the second bearing arm (61); one end of the telescopic plate (63) is fixedly arranged on the cross-shaped slide rail (62); the chassis (64) is fixedly arranged on the other end of the telescopic plate (63); the second motor (65) is fixedly arranged in the chassis (64), and the driving end of the second motor (65) movably penetrates the right side wall of the chassis (64); the flip arm (66) is L-shaped, one end of the flip arm (66) is fixedly arranged on the driving end of the second motor (65), and the other end of the flip arm (66) is movably inserted in the middle of the detection seat (52) and is located above the force-bearing roller (54); and the second infrared rangefinder (67) is fixedly arranged on the upper wall of the other end of the flip arm (66).

6. The caliber detection mechanism for high-frequency welded pipe production according to claim 5 is characterized in that: The guide structure (4) at the right end of the carrying track (3) is the output end.

7. A caliber detection mechanism for high-frequency welded pipe production according to claim 6, characterized in that: The first infrared rangefinder (566) is used to measure the outer wall diameter of the tube body.

8. The caliber detection mechanism for high-frequency welded pipe production according to claim 7 is characterized in that: The second infrared rangefinder (67) is used to measure the radius of the inner wall of the tube.

Images