A device and control method for detecting and controlling the ring compression connection of stainless steel pipes

Abstract

This invention discloses a stainless steel pipe circumferential bonding testing device and control method, comprising: a circumferential bonding cylinder head having multiple radially retractable pressure heads for circumferential bonding of stainless steel pipes; a rotating ring rotatably disposed within the circumferential bonding cylinder head with the center as its axis; and multiple thickness detection probes spaced apart on the peripheral wall of the rotating ring. When the pressure heads perform circumferential bonding on the stainless steel pipe, they drive the rotating ring to rotate, with the rotation path of the multiple thickness detection probes being at least one circumference. This invention, by providing a rotating ring that rotates along its center on the circumferential bonding cylinder head, and by mounting multiple thickness detection probes on the rotating ring, allows for comprehensive detection of the stainless steel pipe's quality during the circumferential bonding process. This saves labor and improves testing efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of stainless steel pipe processing, in particular, relates to a stainless steel pipe ring pressure connection detection device and control method. BACKGROUND

[0002] The ring pressure connection is that a cylindrical wide band sealing ring is sleeved on a pipe fitting, inserted into the socket of another ring pressure pipe fitting, and a special tool is used to press from the outside along the circumference of the socket, so that the socket is deformed together with the pipe and the sealing section of the socket is compressed, thereby achieving the pipe fitting fastening and sealing.

[0003] The existing ring pressure device is basically divided into caliper type or chuck type, both of which press the center through a plurality of pairs of pressure heads to connect two stainless steel pipes by ring pressure. After the ring pressure action is completed, the technical personnel need to check the size of the crimping by using a special caliper. It is needless to say that for the continuous processing of the factory, the technical personnel cannot detect each ring-connected stainless steel pipe, which cannot guarantee the qualified rate of each processed stainless steel pipe, and the detection labor intensity is large and the detection efficiency is poor.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and the purpose is to provide a stainless steel pipe ring pressure connection detection device, wherein a rotating ring that rotates along the center thereof is arranged on the ring pressure cylinder head, a plurality of thickness detection probes are arranged on the rotating ring, and the rotating ring can rotate along the center of the ring pressure cylinder head during the radial movement of the pressure head, so that the plurality of thickness detection probes rotate at least by a complete circle, so that whether the stainless steel pipe of the crimping operation is qualified can be known in all directions, the labor is saved, and the detection efficiency is improved.

[0006] Another purpose of the present application is to provide a control method.

[0007] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is as follows: a stainless steel pipe ring pressure connection detection device, comprising a ring pressure cylinder head having a plurality of pressure heads that can stretch and retract along the radial direction for ring pressure connection of stainless steel pipes; further comprising,

[0008] A rotating ring is arranged in the ring pressure cylinder head with the center of the ring pressure cylinder head as the axis;

[0009] A plurality of thickness detection probes are arranged on the peripheral wall of the rotating ring, and the rotating ring is driven to rotate when the pressure head performs ring pressure connection on the stainless steel pipe, and the rotating path of the plurality of thickness detection probes is at least one circumference.

[0010] Further, a connecting structure is arranged between the rotating ring and one of the pressing heads of the ring pressing cylinder head, for rotating the rotating ring when the pressing heads move towards the center along the radial direction.

[0011] Further, the connecting structure comprises,

[0012] a driving part arranged on the outer periphery of the ring pressing cylinder head, the driving part being in contact with the rotating ring;

[0013] a transmission part having one end in transmission connection with the pressing head and the other end in transmission connection with the driving part, for rotating the driving part when the pressing head moves towards the center along the radial direction.

[0014] Further, the driving part is a driving wheel, the driving wheel being in point contact with the outer periphery of the rotating ring.

[0015] Alternatively, the outer periphery of the driving wheel is provided with a first outer gear ring, and the outer periphery of the rotating ring is provided with a second outer gear ring matched with the first outer gear ring.

[0016] Further, the transmission part comprises,

[0017] a trigger rod arranged along the radial direction of the ring pressing cylinder head, one end of the trigger rod being connected with the pressing head, and the other end of the trigger rod being provided with a rack;

[0018] a gear set having one end in meshing transmission connection with the rack and the other end in transmission connection with the driving wheel.

[0019] Further, the gear set comprises,

[0020] a first bevel gear set comprising a first bevel gear and a second bevel gear, the two bevel gears being in meshing transmission, and the first bevel gear being connected with a driven gear matched with the rack through a transmission shaft;

[0021] a second bevel gear set comprising a third bevel gear and a fourth bevel gear, the two bevel gears being in meshing transmission, one end of the third bevel gear being connected with the second bevel gear through a transmission shaft, and the fourth bevel gear being connected with the driving wheel through a transmission shaft.

[0022] Further, the third bevel gear has a larger number of teeth than the fourth bevel gear.

[0023] Preferably, the ratio of the number of teeth of the third bevel gear to the number of teeth of the fourth bevel gear is 3:1.

[0024] Further, a plurality of ultrasonic probes are arranged on the rotating ring, each of the ultrasonic probes being located between two adjacent thickness detection probes.

[0025] The application further provides a control method applied to the stainless steel pipe ring pressing connection detection device.

[0026] Determine the extrusion position of the stainless steel pipe to be processed, and insert it into the ring pressing cylinder head;

[0027] Drive the plurality of pressing heads to move along the radial direction of the ring pressing cylinder head, and drive the rotating ring to rotate around the center of the ring pressing cylinder head;

[0028] The sum of the rotation angles of the plurality of thickness detection probes and / or the plurality of ultrasonic probes is at least one circumference, and the thickness and / or damage of the extrusion position of the stainless steel pipe is detected.

[0029] Further, the plurality of pressing heads are driven to move along the radial direction of the ring pressing cylinder head, and the plurality of thickness detection probes are controlled to operate;

[0030] The plurality of pressing heads are driven to move reversely along the radial direction of the ring pressing cylinder head, and the plurality of ultrasonic probes are controlled to operate.

[0031] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art.

[0032] (1) The present application is provided with a rotating ring rotating along the center of the ring pressing cylinder head, and a plurality of thickness detection probes are arranged on the rotating ring. During the radial movement of the pressing heads, the rotating ring can rotate along the center of the ring pressing cylinder head, and the plurality of thickness detection probes rotate accordingly, with an enclosed angle of at least one full circle. Therefore, it can be determined whether the stainless steel pipe after crimping operation is qualified, and the detection efficiency is improved.

[0033] (2) The present application is provided with a rotating ring rotatingly connected with the ring pressing cylinder head, and a connecting structure is arranged on the side wall of the ring pressing cylinder head. Through the linkage of the connecting structure, the pressing head can automatically rotate with the rotating ring when moving along the radial direction. Therefore, the thickness detection probes arranged on the rotating ring can detect the thickness change and state of the stainless steel pipe in real time, so as to determine whether the two stainless steel pipes meet the thickness requirement after crimping.

[0034] (3) The present application is provided with a driving part in the form of a driving wheel, which is in point contact with the outer periphery of the rotating ring. Therefore, the rotating ring can be driven to rotate by the driving part through friction. Alternatively, the outer periphery of the driving wheel is provided with a first outer gear ring, and the outer periphery of the rotating ring is provided with a second outer gear ring matched with the first outer gear ring. Through the meshing action of the first outer gear ring and the second outer gear ring, the driving wheel can drive the rotating wheel to rotate more stably, avoiding the occurrence of slipping.

[0035] (4) By setting up a first bevel gear set and a second bevel gear set, and the number of teeth of the third bevel gear in the second bevel gear set being greater than the number of teeth of the fourth bevel gear, the bevel gear transmission is more stable. When the third bevel gear is transmitting to the fourth bevel gear, it can drive the fourth bevel gear to rotate rapidly, thereby allowing the drive wheel to rotate at a greater angle. Thus, the limited transmission distance between the rack on the trigger rod and the driven gear can be amplified, thereby ensuring that when the multiple thickness detection probes rotate with the rotating ring, the sum of their overall rotation angles is a complete circle.

[0036] (5) This invention controls the operation of multiple thickness detection probes by driving multiple pressure heads to move radially along the ring pressing cylinder head; it also controls the operation of multiple ultrasonic probes by driving multiple pressure heads to move in the opposite direction along the ring pressing cylinder head. The back-and-forth radial movement of the pressure heads controls different probes to work, thus making the division of labor clearer and the detection results more accurate. After the pressing is completed, the ultrasonic probe is used for detection. The internal deformation has been fixed, thus the detection results are more accurate.

[0037] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0038] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0039] Figure 1 This is a front view in an embodiment of the present invention;

[0040] Figure 2 This is a side view from an embodiment of the present invention;

[0041] Figure 3 This is a three-dimensional structural diagram illustrating the connection relationship between the ring-pressure cylinder head and the rotating ring in an embodiment of the present invention.

[0042] Figure 4 This is a schematic diagram of the planar structure of the rotating ring connection relationship in an embodiment of the present invention;

[0043] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0044] Figure 6 This is a flowchart of an embodiment of the present invention.

[0045] Description of main components in the diagram:

[0046] 1, hydraulic oil tank; 11, hydraulic solenoid valve; 2, display screen; 3, alarm device; 4, rotating ring; 5, driving motor; 6, thickness detection probe; 7, ultrasonic probe; 8, ring pressure cylinder head; 81, pressure head; 9, connecting structure; 91, transmission part; 911, trigger rod; 912, rack; 913, driven gear; 914, first bevel gear; 915, second bevel gear; 916, third bevel gear; 917, fourth bevel gear; 918, transmission shaft; 92, driving part; 10, fixed plate.

[0047] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0049] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0050] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] As Figures 1 to 5 shown, the stainless steel pipe ring pressure connection detection device of the present application comprises a ring pressure cylinder head 8, which has a plurality of pressure heads 81 that can be expanded and contracted along the radial direction, for ring pressure connection of stainless steel pipes.

[0052] The stainless steel ring pressing mechanism in the application comprises a hydraulic system, wherein the hydraulic system at least comprises a hydraulic oil tank 1, a hydraulic electromagnetic valve 11 and a driving motor 5, the hydraulic electromagnetic valve 11 is arranged on the oil pipe interface connected with the ring pressing cylinder head 8 to control the opening of the oil pipe, the hydraulic pump is arranged in the hydraulic oil tank 1, the hydraulic pump is driven by the driving shaft of the driving motor 5 to extract the hydraulic oil from the hydraulic oil tank 1, the one-way valve is arranged between the outlet and the hydraulic pump to protect the hydraulic pump, the side wall of the hydraulic oil tank 1 is further provided with a glass liquid level meter, the hydraulic oil level in the hydraulic oil tank 1 can be directly observed through the window, the air filter is arranged on the top of the hydraulic oil tank 1 and can be communicated with the outside atmosphere to avoid the pressure generated by thermal expansion and cold contraction in the hydraulic oil tank 1, and the impurities in the atmosphere can be filtered to ensure the cleanliness of the hydraulic oil in the hydraulic oil tank 1, and the plurality of pairs of pressing heads 81 are arranged in the ring pressing cylinder head 8, the driving motor 5, the hydraulic oil tank 1 and the hydraulic electromagnetic valve 11 are controlled to continuously pressurize, and the pressing heads 81 can move along the radial direction of the ring pressing cylinder head 8.

[0053] The conventional ring pressing connecting device needs to be manually detected by a technician through a caliper after the stainless steel pipe is pressed to check whether the size after pressing is qualified. In the continuous production process of the factory, each stainless steel pipe after pressing cannot be detected, the detection strength is large, and the efficiency is poor.

[0054] In order to overcome the defects existing in the above, the application makes corresponding improvements:

[0055] The rotating ring 4 is arranged in the ring pressing cylinder head 8 with the center of the ring pressing cylinder head 8 as the axis,

[0056] The plurality of thickness detection probes 6 are arranged on the peripheral wall of the rotating ring 4, the rotating ring 4 is driven to rotate when the pressing heads 81 press the stainless steel pipe, and the rotating path of the plurality of thickness detection probes 6 is at least one circumference.

[0057] In the application, the rotating ring 4 is arranged on the ring pressing cylinder head 8 and rotates along the center thereof. Specifically, the rotating ring 4 is embedded in the front side of the ring pressing cylinder head 8. A plurality of mounting holes are arranged on the rotating ring 4 at intervals, and the included angle of every two adjacent mounting holes is the same. An internal thread is arranged in the mounting hole, and the thickness detection probe 6 is threadedly connected in each mounting hole. In the specific pressing implementation process, the support for fixing the stainless steel pipe is arranged on the upper side of the hydraulic oil tank 1, and the fixing clamp is arranged on the support to temporarily clamp the stainless steel pipe. Through the continuous pressurization of the hydraulic system, the pairs of pressing heads 81 move along the radial direction of the ring pressing cylinder head 8 to the center, so that the stainless steel pipe arranged in the middle is continuously pressed.

[0058] During the radial movement of the pressing heads 81, the rotating ring 4 can rotate along the center of the ring pressing cylinder head 8, and the plurality of thickness detection probes 6 rotate accordingly, at least by an angle of a full circle. The number of thickness detection probes 6 can be 3, 4 or even more.

[0059] The thickness of the stainless steel pipe at the crimping position is detected by the plurality of thickness detection probes 6 in a full circle, so that whether the stainless steel pipe is qualified after crimping can be known in all directions, and the detection efficiency is improved.

[0060] Further, the connecting structure 9 is arranged between the rotating ring 4 and one of the pressing heads 81 of the ring pressing cylinder head 8, for rotating the rotating ring 4 when the pressing heads 81 move towards the center along the radial direction.

[0061] In the present application, the rotating ring 4 is rotatably connected with the ring pressing cylinder head 8, and the connecting structure 9 is arranged on the side wall of the ring pressing cylinder head 8. Through the linkage of the connecting structure 9, the pressing heads 81 can automatically rotate with the rotating ring 4 when moving along the radial direction. Through the connecting structure 9, the linkage between the pressing heads 81 and the rotating ring 4 can be simultaneously performed, so that the thickness detection probes 6 arranged on the rotating ring 4 can detect the thickness change and state of the stainless steel pipe in real time, so as to determine whether the two stainless steel pipes meet the thickness requirement after crimping.

[0062] Further, the connecting structure 9 comprises,

[0063] The driving part 92 is rotatably arranged on the outer periphery of the ring pressing cylinder head 8, and the driving part 92 is in contact with the rotating ring 4;

[0064] The transmission part 91 is in transmission connection with one end of the pressing head 81 and the other end of the driving part 92, and the transmission part 91 rotates the driving part 92 when the pressing head 81 moves towards the center along the radial direction.

[0065] In the present application, the driving part 92 of the connecting structure 9 is in frictional contact with the rotating ring 4. In order to improve the friction force between the two, an annular groove is arranged on the driving part 92, and a rubber ring is arranged in the annular groove. The rubber ring is in contact with the outer peripheral wall of the rotating ring 4, so as to avoid the driving part 92 from slipping when driving the rotating ring 4 to rotate.

[0066] One end of the transmission part 91 is connected with the pressing head 81, so that when the pressing head 81 moves in the radial direction, the transmission part 91 can be driven to move together. The other end of the transmission part 91 is connected with the driving part 92, so that when the transmission part 91 is moved by the pressing head 81, the driving part 92 can be driven to rotate, and in turn drive the rotating ring 4 to rotate. It is ensured that the rotating ring 4 can be driven to rotate by the connecting structure 9 during the radial movement of the pressing head 81, so that the plurality of thickness detection probes 6 can surround an angle sum of at least 360°, and in turn achieve real-time detection of the thickness during the ring pressing connection of the stainless steel pipe.

[0067] Further, the driving part 92 is a driving wheel which is in point contact with the outer periphery of the rotating ring 4.

[0068] Alternatively, the outer periphery of the driving wheel is provided with a first outer gear ring, and the outer periphery of the rotating ring 4 is provided with a second outer gear ring matched with the first outer gear ring.

[0069] In the present application, the driving part 92 adopts the form of a driving wheel, and one driving mode is that the driving wheel is in point contact with the outer periphery of the rotating ring 4, and the rotating ring 4 is driven to rotate by the driving part 92 through friction.

[0070] Another mode is that the outer periphery of the driving wheel is provided with a first outer gear ring, and the outer periphery of the rotating ring 4 is also provided with a second outer gear ring matched with the first outer gear ring, so that the driving wheel drives the rotating ring to rotate more stably through the meshing of the first outer gear ring and the second outer gear ring, avoiding the occurrence of slipping.

[0071] Further, the transmission part 91 comprises

[0072] The trigger rod 911 is arranged in the radial direction of the ring pressing cylinder head 8, one end of which is connected with the pressing head 81, and the other end of which is provided with a rack 912;

[0073] The gear set is in meshing transmission connection with the rack 912 at one end, and in transmission connection with the driving wheel at the other end.

[0074] In the present application, the transmission part 91 can adopt the linkage mode of the trigger rod 911 and the gear set, wherein the trigger rod 911 is provided with a rack 912 or the trigger rod 911 itself is a complete rack 912, and the rack 912 on the trigger rod 911 is in meshing transmission with the gear set. Due to the cooperation of the gear set, the driving wheel can be finally driven to rotate. The setting direction of the trigger rod 911 is consistent with the radial movement direction of the pressing head 81.

[0075] Further, the gear set comprises

[0076] The first bevel gear set comprises a first bevel gear 914 and a second bevel gear 915, and the two bevel gears are in meshing transmission; the first bevel gear 914 is connected with a driven gear 913 matched with the rack 912 through a transmission shaft 918;

[0077] The second bevel gear set comprises a third bevel gear 916 and a fourth bevel gear 917, and the two bevel gears are in meshing transmission; the third bevel gear 916 is connected with the second bevel gear 915 through the transmission shaft 918 at one end, and the fourth bevel gear 917 is connected with the driving wheel through the transmission shaft 918.

[0078] In the present application, the specific structure of the gear set can be two pairs of bevel gear sets. Among them, the first bevel gear 914 in the first bevel gear set 914 is in meshing transmission with the second bevel gear 915; one end of the first bevel gear 914 is connected with the driven gear 913 through the transmission shaft 918, and the driven gear 913 is in meshing transmission with the rack 912 on the trigger lever 911.

[0079] In addition, the third bevel gear 916 in the second bevel gear set 915 is in meshing transmission with the fourth bevel gear 917. Among them, the fixed plate 10 is arranged on the ring pressing cylinder head 8, a rotating shaft is arranged between the third bevel gear 916 and the second bevel gear 915, the rotating shaft penetrates through the fixed plate 10 and is rotatably connected with the fixed plate 10, and the fourth bevel gear 917 is connected with the driving wheel through the rotating shaft. Thus, through the two bevel gear sets, the movement is transmitted to the driving wheel when the pressing head 81 moves in the radial direction, and the transmission to the rotating ring 4 is realized.

[0080] Further, the number of teeth of the third bevel gear 916 is greater than the number of teeth of the fourth bevel gear 917;

[0081] Preferably, the tooth ratio of the third bevel gear 916 to the fourth bevel gear 917 is 3:1.

[0082] In the present application, the number of teeth of the third bevel gear 916 is greater than the number of teeth of the fourth bevel gear 917, and the tooth ratio is preferably 3:1, so that the third bevel gear 916 can drive the fourth bevel gear 917 to rotate quickly when transmitting the fourth bevel gear 917, and thus the driving wheel can rotate more angles. Thus, within the limited transmission distance of the rack 912 on the trigger lever 911 and the driven gear 913, the rotation path of the driving wheel can be enlarged, and thus the sum of the overall rotation angles of the plurality of thickness detection probes 6 can be ensured to be a complete circumference when the rotating ring 4 rotates, and thus the real-time thickness detection of the stainless steel pipe and the judgment of whether the thickness reaches the compression completion thickness can be realized.

[0083] Further, a plurality of ultrasonic probes 7 are arranged on the rotating ring 4, and each ultrasonic probe 7 is located between two adjacent thickness detection probes 6.

[0084] In the present application, a plurality of ultrasonic probes 7 are also arranged on the rotating ring 4, each of which is located between two thickness detection probes 6, and the included angle of the two adjacent ultrasonic probes 7 is consistent. The abovementioned pressure head 81 is moved along the radial direction, so that the sum of the rotation angles of the thickness detection probes 6 and the ultrasonic probes 7 on the rotating ring 4 is at least one complete circumference. Then, through the real-time detection of the plurality of ultrasonic probes 7, it can be known whether the stainless steel pipe has internal cracks and other defects during the ring pressing connection of the stainless steel pipe, and then it can be accurately judged whether the stainless steel pipe pressing forming is qualified.

[0085] Similarly, each ultrasonic probe 7 is electrically connected with the display screen 2. Thus, during the pressing process, the technician can observe in real time through the display screen 2.

[0086] In addition, a control panel is arranged on the upper side of the hydraulic oil tank 1, and the control panel is provided with an alarm device 3, which can be an alarm lamp, a buzzer or other electrical appliances with prompting function. When the thickness of the stainless steel pipe exceeds the preset value or cracks occur during the ring pressing process, the abovementioned alarm device 3 can timely prompt the technician.

[0087] Reference Figure 6 The present application also provides a control method of the stainless steel pipe ring pressing connection detection device according to any one of the above-mentioned embodiments, which comprises the following steps,

[0088] The extrusion part of the stainless steel pipe to be processed is determined and inserted into the ring pressing cylinder head 8;

[0089] The plurality of pressure heads 81 are driven to move along the radial direction of the ring pressing cylinder head 8, and the rotating ring 4 is driven to rotate around the center of the ring pressing cylinder head 8;

[0090] The sum of the rotation angles of the plurality of thickness detection probes 6 and / or the plurality of ultrasonic probes 7 is at least one circumference, and the thickness and / or damage of the extrusion part of the stainless steel pipe is detected.

[0091] In the present application, the preparation stage: the stainless steel pipes are temporarily fixed on the fixing clamp, then one of the stainless steel pipes is sleeved with another stainless steel pipe, and the sleeve position is marked; the sealing ring is sleeved on the thinner stainless steel pipe, and the thicker stainless steel pipe is sleeved on the thinner stainless steel pipe, and the insertion depth is to the marked position.

[0092] The crimping stage: the ring pressing cylinder head 8 is continuously pressed by the hydraulic system, so that the paired pressing heads 81 move along the radial direction to the center, so that the driving part 92 drives the rotating ring 4 to rotate through the transmission of the connecting structure 9, and then the plurality of thickness detection probes 6 rotate around the stainless steel pipe, and the sum of the rotation angles of the plurality of thickness detection probes 6 is at least 360°, so that the thickness of the stainless steel pipe during the crimping process can be detected in real time as a whole, and then it can be judged whether the crimping operation is in place. In addition, an ultrasonic probe 7 is arranged between the two thickness detection probes 6, and the same movement action is consistent, and the damage of the stainless steel pipe during the crimping process can be detected in real time. Then the thickness detection probe 6 and the ultrasonic probe 7 can be detected at the same time or separately, so as to meet the detection of the technical personnel on whether the stainless steel pipe is qualified.

[0093] Further, the plurality of pressing heads 81 are driven to move along the radial direction of the ring pressing cylinder head 8, and the plurality of thickness detection probes 6 are controlled to operate;

[0094] The plurality of pressing heads 81 are driven to move reversely along the radial direction of the ring pressing cylinder head 8, and the plurality of ultrasonic probes 7 are controlled to operate.

[0095] In the present application, during the crimping process of the stainless steel pipe, the thickness detection probe 6 is used to detect the thickness change of the stainless steel pipe in real time; when the pressing head 81 moves reversely in the radial direction, the plurality of ultrasonic probes 7 are controlled to rotate with the rotating ring 4 at this time, so that whether the stainless steel pipe is damaged in a whole cycle can be detected. Through the back-and-forth radial movement of the pressing head 81, different probes are controlled to work respectively, so that the division of labor is more clear, and the detection result is more accurate. After the crimping is completed, the ultrasonic probe 7 is used for detection, and the internal deformation has been fixed, so that the detection result is more accurate.

[0096] In addition, the above detection processes can be observed through the display screen 2, and when the thickness does not meet the standard or damage occurs, an alarm can be set to alarm and prompt the technical personnel to screen the crimped stainless steel pipe.

[0097] The above description is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes are equivalent. The embodiments in the above examples can be further combined or replaced, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification of the above examples according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A device for detecting the ring-press connection of stainless steel pipes, comprising a ring-press cylinder head (8) having a plurality of press heads (81) that can be extended and retracted along the radial direction for ring-press connecting the stainless steel pipes; characterized in that: Also included, A rotating ring (4) is arranged in the ring pressing cylinder head (8) and rotates around the center of the ring pressing cylinder head (8); A plurality of thickness detection probes (6) are arranged on the circumferential wall of the rotating ring (4) and rotate with the rotating ring (4) when the pressing head (81) is used to connect the stainless steel pipe by ring pressing, and the rotating path of the plurality of thickness detection probes (6) is at least one circumference; A connecting structure (9) is arranged between the rotating ring (4) and one of the pressing heads (81) of the ring pressing cylinder head (8) to drive the rotating ring (4) to rotate when the pressing head (81) moves towards the center along the radial direction.

2. The apparatus for detecting a ring press connection of a stainless steel pipe according to claim 1, wherein: The connecting structure (9) comprises, A driving part (92) is arranged on the outer circumference of the ring pressing cylinder head (8) and is in contact with the rotating ring (4); A transmission part (91) is in transmission connection with the pressing head (81) at one end and in transmission connection with the driving part (92) at the other end, and drives the driving part (92) to rotate when the pressing head (81) moves towards the center along the radial direction.

3. The apparatus for detecting a ring press connection of a stainless steel pipe according to claim 2, characterized in that: The driving part (92) is a driving wheel which is in point contact with the outer circumference of the rotating ring (4); Alternatively, a first outer gear ring is arranged on the outer circumference of the driving wheel, and a second outer gear ring matched with the first outer gear ring is arranged on the outer circumference of the rotating ring (4).

4. The apparatus for detecting a ring press connection of a stainless steel pipe according to claim 3, wherein: The transmission part (91) comprises, A trigger rod (911) extends along the radial direction of the ring pressing cylinder head (8) and is connected with the pressing head (81) at one end and provided with a rack (912) at the other end; A gear set is in meshing transmission connection with the rack (912) at one end and in transmission connection with the driving wheel at the other end.

5. A device for detecting a ring press connection of a stainless steel pipe according to claim 4, characterized in that: The gear set comprises, A first bevel gear set comprises a first bevel gear (914) and a second bevel gear (915), and the two bevel gears are in meshing transmission, and the first bevel gear (914) is connected with a driven gear (913) matched with the rack (912) through a transmission shaft (918); A second bevel gear set comprises a third bevel gear (916) and a fourth bevel gear (917), and the two bevel gears are in meshing transmission, and the third bevel gear (916) is connected with the second bevel gear (915) through a transmission shaft (918) at one end, and the fourth bevel gear (917) is connected with the driving wheel through a transmission shaft (918).

6. A device for detecting a ring press connection of a stainless steel pipe according to claim 5, characterized in that: The number of teeth of the third bevel gear (916) is greater than that of the fourth bevel gear (917).

7. A device for detecting a ring press connection of a stainless steel pipe according to claim 6, wherein: The ratio of the number of teeth of the third bevel gear (916) to that of the fourth bevel gear (917) is 3:

1.

8. A device for detecting a ring press connection of a stainless steel pipe according to any one of claims 1 to 7, characterized in that: A plurality of ultrasonic probes (7) are arranged on the rotating ring (4), and each ultrasonic probe (7) is located between two adjacent thickness detection probes (6).

9. A control method applied to the stainless steel pipe ring press connection detection device of claim 8, characterized in that: The method comprises the following steps: Determine the extrusion position of the stainless steel pipe to be processed and insert it into the ring pressing cylinder head (8); Drive the plurality of pressing heads (81) to move along the radial direction of the ring pressing cylinder head (8) and drive the rotating ring (4) to rotate around the center of the ring pressing cylinder head (8); The sum of the rotation angles of the plurality of thickness detection probes (6) and / or the plurality of ultrasonic probes (7) is at least one circumference, and the thickness and / or damage of the extrusion position of the stainless steel pipe is detected.

10. The control method according to claim 9, wherein: The plurality of pressing heads (81) are driven to move along the radial direction of the ring pressing cylinder head (8), and the plurality of thickness detection probes (6) are controlled to operate; The plurality of pressing heads (81) are driven to move reversely along the radial direction of the ring pressing cylinder head (8), and the plurality of ultrasonic probes (7) are controlled to operate.

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