Friction welding temperature-measuring welding head fixing structure, temperature-measuring welding head, temperature-measuring system, and method

Abstract

A friction welding temperature-measuring welding head fixing structure, comprising: a base (100) having two electrical connection wires (110), wherein two electrical connection structures are provided on the bottom surface of the base (100), and the two electrical connection structures are respectively connected to the two electrical connection wires (110); and a welding head (200) on which a thermocouple wire (210) and a conductive structure (220) are mounted, wherein the thermocouple wire (210) and the conductive structure (220) are electrically connected to the two electrical connection structures, respectively, wherein the thermocouple wire (210) is electrically connected to the corresponding electrical connection structure, the conductive structure (220) is electrically connected to the corresponding electrical connection structure, and the thermocouple wire (210) and the conductive structure (220) can both be separated after moving away from the base (100) along with the welding head (200) to a certain distance. In the welding head fixing structure, the thermocouple wire (210) and the conductive structure (220) are both detachably connected to the electrical connection structures, and when the welding head (200) is detached, the thermocouple wire (210) and the conductive structure (220) can be simultaneously separated from the electrical connection structures, so that there is no need to detach wire harnesses, the detachment is not affected by wire harnesses, and it is more convenient to detach the welding head (200). The present invention also relates to a temperature-measuring welding head, a temperature-measuring system, and a welding seam temperature-measuring method.

Description

A friction welding temperature measuring welding head fixing structure, a temperature measuring welding head, a temperature measuring system and a method TECHNICAL FIELD

[0001] The present application relates to the technical field of friction welding, in particular, to a friction welding temperature measuring welding head fixing structure, a temperature measuring welding head, a temperature measuring system and a method. BACKGROUND

[0002] Friction stir welding mainly generates a large amount of friction heat through the friction between the stirring head and the workpiece to be welded, so that the weld material softens to a hot plastic state, and the weld material flows and mixes to achieve solid-phase connection of the material. Friction stir welding is a high-efficiency, high-performance and environmentally friendly welding technology, which is widely used in aluminum, copper and titanium alloy welding fields. The welding temperature change caused by friction is an important indicator of the friction stir welding process, which directly affects the welding quality. Real-time monitoring of the core zone temperature of the welding process helps to improve the stability of the welding process and reduce welding defects.

[0003] In order to measure the temperature of the core zone of the welding process, a thermocouple wire can be used for temperature measurement, such as patent CN202310185422.X, which discloses a temperature monitoring method and device for the core zone of the welding seam of friction stir welding. The stirring welding head is connected to the signal processing circuit board through a wire. When the stirring welding head needs to be disassembled and replaced, the wire needs to be disassembled and a new stirring welding head needs to be reconnected. However, the signal processing circuit board is usually wrapped, and the disassembly and reconnection of the wire are very troublesome, which makes the replacement of the welding head disturbed and affected by the wire harness, and the operation is complicated. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a friction welding temperature measuring welding head fixing structure, which can facilitate the disassembly and replacement of the welding head.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0006] A friction welding temperature measuring welding head fixing structure, comprising: a female seat having two electric connection lines, the female seat bottom surface is provided with two electric connection structures, and the two electric connection structures are connected with the two electric connection lines respectively; a welding head installed with a thermocouple wire; the thermocouple wire extends to the temperature measuring area of the welding head; the thermocouple wire is electrically connected with one of the electric connection structures; and the thermocouple wire and the corresponding electric connection structure are detachably connected.

[0007] Further, the welding head is provided with an electrically conductive structure, the material of the thermocouple wire is different from that of the welding head, the electrically conductive structure extends to the non-temperature measuring area of the welding head, and the electrically conductive structure is electrically connected with another electrically connecting structure; the thermocouple wire and the corresponding electrically connecting structure are detachably connected.

[0008] Further, the female seat and the welding head are circumferentially positioned by a circumferential positioning structure.

[0009] Further, the circumferential positioning structure comprises a positioning protrusion arranged at the upper end of the welding head and a positioning gap arranged at the lower end of the female seat and matched with the positioning protrusion.

[0010] Further, the electrically connecting structure is a metal sleeve arranged at the bottom of the female seat, and the thermocouple wire and the upper end of the electrically conductive structure protrude from the upper end of the welding head and are inserted into the corresponding metal sleeve.

[0011] Further, the height of the thermocouple wire and the electrically conductive structure protruding from the upper end of the welding head is less than the height of the positioning protrusion protruding from the upper end of the welding head.

[0012] Further, the outer circumferential wall of the welding head is provided with a vertical plane.

[0013] Further, the welding head comprises a welding head body and a cover plate, the upper end surface of the welding head body is provided with a first insertion hole and a second insertion hole, the thermocouple wire and the electrically conductive structure are respectively inserted into the first insertion hole and the second insertion hole, and the cover plate is detachably arranged at the upper end of the welding head body to axially limit the thermocouple wire and the electrically conductive structure.

[0014] Further, the outer circumference of the thermocouple wire is wrapped with an insulating tube inserted into the first insertion hole, and the upper end of the thermocouple wire extends out of the insulating tube, and the lower end of the thermocouple wire is flush with the friction surface of the welding head body or / and in contact with the welding head body.

[0015] Further, the first insertion hole is a through hole, the lower end of the thermocouple wire is flush with the friction surface of the welding head body, and the lower end of the thermocouple wire is separated from the welding head body by the insulating tube.

[0016] Further, the first insertion hole is a through hole, the outer circumference of the insulating tube is matched with the first insertion hole and inserted into the first insertion hole, the lower end of the thermocouple wire is provided with a radial protruding head, the outer circumference of the radial protruding head is in contact with the inner wall of the first insertion hole, and the lower end of the insulating tube is in abutment with the upper end surface of the radial protruding head.

[0017] Further, the cover plate is provided with a first insulating sleeve, and the first insulating sleeve is provided with a through hole, and the upper end of the thermocouple wire extends out of the cover plate through the through hole; the first insulating sleeve is in a stepped shaft shape with a narrow upper end and a wide lower end, the cover plate is provided with a first stepped hole for fitting the first insulating sleeve, and the upper end of the insulating tube is attached to the bottom surface of the first insulating sleeve.

[0018] The application also provides a temperature measuring welding head, comprising: a welding sleeve; a friction welding temperature measuring welding head fixing structure installed on the welding sleeve.

[0019] Further, the two electric connection structures are elastically deformed to be in elastic contact with the thermocouple wire and the conductive structure respectively, or the female seat is elastically movably installed on the welding sleeve to apply elastic forces to the two electric connection structures towards the thermocouple wire and the conductive structure.

[0020] The application also provides a temperature measuring system, comprising: a temperature measuring welding head; a transmitting device and a receiving device, one of the transmitting device and the receiving device is arranged on the temperature measuring welding head, and the other is connected with the temperature measuring welding head and can rotate with the temperature measuring welding head, and during the rotation, when the transmitting device and the receiving device are opposite to each other, the receiving device can receive the medium transmitted by the transmitting device.

[0021] The application also provides a welding seam temperature measuring method, comprising the following steps: S1, driving the temperature measuring welding head to rotate by a rotating driving mechanism, and rotating the temperature measuring welding head to rub the welding seam area of a to-be-welded part; S2, rotating the temperature measuring welding head to perform real-time temperature measurement on the welding seam core area to obtain a temperature-time curve; S3, when the transmitting device and the receiving device are opposite to each other, the receiving device receives the medium transmitted by the transmitting device, and records the time, and sets the time as a calibration time; and S4, subdividing the welding seam core area into multiple subareas, and obtaining the temperature distribution of each subarea according to the temperature-time curve, the calibration time and the temperature measuring assembly test position.

[0022] The application has the following beneficial effects:

[0023] The thermocouple wire, the conductive structure and the electric connection structure are detachably connected, and when the welding head is detached, the thermocouple wire, the conductive structure and the electric connection structure can be separated at the same time, so that the wiring harness does not need to be detached and arranged, and the welding head is more convenient to detach without being affected by the wiring harness.

[0024] In addition to the objects, features and advantages described above, the application has other objects, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiment of the application and assist in

[0026] Fig. 1 is a schematic view of the connecting structure of the embodiment of the present application;

[0027] Fig. 2 is a schematic view of the structure of the female seat and the welding head in the exploded state;

[0028] Fig. 3 is a schematic view of the structure of the welding head in the exploded state;

[0029] Fig. 4 is a schematic view of the structure of the female seat;

[0030] Fig. 5 is a schematic view of the structure of the welding head;

[0031] Fig. 6 is a sectional view of the female seat and the welding head installed in the welding sleeve;

[0032] Fig. 7 is an enlarged view of A in Fig. 6;

[0033] Fig. 8 is a partial sectional view of one embodiment of the installation of the thermocouple wire;

[0034] Fig. 9 is a partial sectional view of another embodiment of the installation of the thermocouple wire;

[0035] Fig. 10 is a partial sectional view of another embodiment of the installation of the thermocouple wire;

[0036] Fig. 11 is a partial sectional view of one embodiment of the friction stir welding device;

[0037] Fig. 12 is a partial sectional view of another embodiment of the friction stir welding device

[0038] Fig. 13 is a schematic view of the structure of the temperature measuring system;

[0039] Fig. 14 is an enlarged view of B in Fig. 13;

[0040] Fig. 15 is a schematic view of the working principle of the embodiment of the present application;

[0041] Fig. 16 is a curve of temperature and time of the embodiment of the present application.

[0042] Legend:

[0043] Female seat 100, electric connecting wire 110, positioning allowance 120, metal sleeve 130;

[0044] Welding head 200, vertical plane 201, friction surface 202, thermocouple wire 210, insulating tube 211, conductive structure 220, circumferential protrusion 221, positioning protrusion 230, welding head body 240, first insertion hole 241, second insertion hole 242, threaded hole 243, cover plate 250, insulating sleeve 251, through hole 252, first stepped hole 253, second stepped hole 254, connecting hole 255, second insulating sleeve 260;

[0045] Welding sleeve 300, setscrew 310, mounting cavity 320, light inlet hole 321;

[0046] Emission device 500;

[0047] Induction device 600;

[0048] Welding piece 700, return side area 710, rear end area 720, advancing side area 730, front end area 740. DETAILED DESCRIPTION

[0049] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0051] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0052] In addition, the description of “first”, “second” and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person of ordinary skill in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0053] Please refer to Fig. 1 and Fig. 2, a friction welding temperature measuring head fixing structure in a preferred embodiment of the present application comprises a female seat 100 and a welding head 200.

[0054] The female seat 100 has two electric connection lines 110, and two electric connection structures are arranged on the bottom surface of the female seat 100 and connected with the two electric connection lines 110 respectively. One end of the electric connection line 110 is connected with the corresponding electric connection structure, and the other end extends out of the female seat 100 to facilitate connection with a circuit board, so as to transmit the electric potential signal to the signal processing module on the circuit board.

[0055] The welding head 200 is provided with a thermocouple wire 210 and a conductive structure 220. The material of the thermocouple wire 210 is different from that of the welding head 200. The thermocouple wire 210 extends to the temperature measuring area of the welding head 200, and the conductive structure 220 extends to the non-temperature measuring area of the welding head 200. Specifically, the temperature measuring area is the area where the bottom friction surface 202 of the welding head 200 contacts with the workpiece 101 to be welded, and the non-temperature measuring area is the area away from the temperature measuring area, which is usually arranged within the upper half of the welding head 200. In order to be far away from the temperature measuring area as much as possible, the non-temperature measuring area is preferably arranged at the upper end of the welding head 200, and the conductive structure 220 is arranged at the upper end of the welding head 200. The lower end of the thermocouple wire 210 extends to the same level as the friction surface 202, so as to directly measure the temperature measuring area. The thermocouple wire 210 and the conductive structure 220 are electrically connected with the two electric connection structures respectively, that is, the thermocouple wire 210 is electrically connected with one of the electric connection structures, and the conductive structure 220 is electrically connected with the other electric connection structure.

[0056] The electric connection between the thermocouple wire 210 and the corresponding electric connection structure and the electric connection between the conductive structure 220 and the corresponding electric connection structure can be separated when the welding head 200 is away from the female seat 100 to a certain distance. Therefore, when the welding head 200 is disassembled, the thermocouple wire 210 and the conductive structure 220 can be separated from the corresponding electric connection structure. The separation of the thermocouple wire 210 and the conductive structure 220 from the corresponding electric connection structure can only be realized when the welding head 200 is away from the female seat 100 to a certain distance, so that the electric connection structure can be stably connected with the thermocouple wire 210 and the conductive structure 220 even if there is a certain installation error or vibration. It can be understood that, in order to facilitate installation, the upper end of the thermocouple wire 210 can be thickened or a thickened sleeve can be fixedly arranged on the upper end of the thermocouple wire 210 to facilitate connection with the electric connection structure.

[0057] The application provides a friction welding temperature measuring welding head fixing structure, which utilizes a thermocouple metal wire 210 to contact a welding head of a temperature measuring area, utilizes a conductive structure 220 to contact a non-temperature measuring area, and utilizes the fact that the material of the thermocouple metal wire is different from the material of the welding head to generate a thermoelectric effect when the temperature of the non-temperature measuring area contacted by the conductive structure 220 is different from the temperature of the temperature measuring area sensed by the thermocouple metal wire 210, to generate a voltage in a loop formed by the thermocouple metal wire 210 and the welding head 200, and to obtain the temperature value of the temperature measuring area of the welding head by analyzing the voltage, so as to realize temperature measurement on the core area (temperature measuring area) of the welding seam; and the thermocouple metal wire 210, the conductive structure 220 and the electric connection structure are detachably connected, when the welding head 200 is detached, the thermocouple metal wire 210, the conductive structure 220 and the electric connection structure can be separated at the same time, so that the wiring harness (electric connection wire 110) does not need to be detached and arranged, the connection of the electric connection wire 110 and other electronic components on the female seat 100 is not affected, when the welding head 200 is detached, only the welding head 200 needs to be detached, the detachment of the welding head 200 is not affected by the wiring harness, the detachment of the welding head 200 is more convenient, and when the welding head 200 is reinstalled subsequently, the electric connection wire 110 does not need to be reinstalled, and the detachment and installation operations of the welding head 200 are simplified.

[0058] Of course, in other embodiments, the conductive structure 220 can not be arranged, and one thermocouple metal wire 210 is arranged instead of the conductive structure 220 in the above embodiment; two thermocouple metal wires 210 are arranged, the bottoms of the two thermocouple metal wires 210 extend to the temperature measuring area, specifically, the bottoms of the two thermocouple metal wires 210 can extend to be flush with the friction surface 202, the materials of the two thermocouple metal wires 210 are different, and thus the temperature of the friction welding position of the friction stir welding can be measured.

[0059] As shown in FIG. 1, in some embodiments of the application, the female seat 100 and the welding head 200 are circumferentially positioned by a circumferential positioning structure, so that when the welding head 200 is installed, the thermocouple metal wire 210, the conductive structure 220 and the electric connection structure will not be misaligned, and the thermocouple metal wire 210, the conductive structure 220 and the electric connection structure can be accurately connected.

[0060] As shown in FIG. 2, in some embodiments of the present application, the circumferential positioning structure includes a positioning protrusion 230 arranged on the upper end of the welding head 200 and a positioning recess 120 arranged on the lower end of the female seat 100 and matched with the positioning protrusion 230. As shown in FIG. 7, since the welding head 200 and the female seat 100 are inserted into the circular hole of the welding sleeve 300 during installation, the coaxial centering of the welding head 200 and the female seat 100 is achieved, and the matching of the positioning protrusion 230 and the positioning recess 120 ensures that the female seat 100 will not be rotated and misaligned during docking, thereby achieving circumferential positioning. The positioning protrusion 230 is embedded in the positioning recess 120 to achieve the positioning and docking of the upper end of the welding head 200 and the lower end of the female seat 100. Specifically, the positioning protrusion 230 is arranged on the edge of the female seat 100, and the positioning recess 120 is arranged on the edge of the welding head 200. The positioning protrusion 230 and the positioning recess 120 both have vertical planes that match each other, thereby achieving circumferential positioning. Of course, in other embodiments, the cross-sectional profile of the positioning protrusion 230 and the positioning recess 120 can also be other shapes, such as polygons.

[0061] Of course, in some other embodiments, a positioning recess can also be arranged on the upper end of the welding head 200, and a positioning protrusion can also be arranged on the female seat 100, which can also achieve the same effect.

[0062] Referring to FIGS. 2 and 4, in some embodiments of the present application, the electrical connection structure is a metal sleeve 130 arranged on the bottom of the female seat 100, and the upper end of the thermocouple wire 210 and the conductive structure 220 protrude from the upper end of the welding head 200 and are inserted into the corresponding metal sleeve 130. The metal sleeve 130 is embedded in the bottom surface of the female seat 100, and the upper end of the thermocouple wire 210 and the conductive structure 220 protrude from the upper end of the welding head 200 and are inserted into the metal sleeve 130, thereby achieving connection with the electrical connection wire 110, so that the electric potential signal can be transmitted out. The insertion and separation of the thermocouple wire 210, the conductive structure 220, and the metal sleeve 130 can be achieved with the fitting and separation of the welding head 200 and the female seat 100, so that the insertion and separation of the thermocouple wire 210, the conductive structure 220, and the metal sleeve 130 do not need to be achieved by additional actions. In addition, the positioning and matching of the positioning protrusion 230 and the positioning recess 120 enable the thermocouple wire 210 and the conductive structure 220 to be accurately aligned with the metal sleeve 130 during installation, making the operation and installation simple and convenient.

[0063] In further embodiments of the present application, the heights of the thermocouple wire 210 and the conductive structure 220 protruding from the upper end of the welding head 200 are less than the height of the positioning protrusion 230 protruding from the upper end of the welding head 200, so that when the welding head 200 is installed, the positioning protrusion 230 first cooperates with the positioning recess 120 to achieve circumferential positioning, at which time the thermocouple wire 210 and the conductive structure 220 are aligned with the metal sleeve 130, and then the thermocouple wire 210 and the conductive structure 220 are inserted into the metal sleeve 130, so as to avoid the thermocouple wire 210 and the conductive structure 220 moving upward without being aligned with the metal sleeve 130 and colliding with the bottom surface of the female seat 100 and being damaged, so that when assembled, the positioning protrusion 230 is first cooperated with the positioning recess 120, and then the thermocouple wire 210 and the conductive structure 220 are inserted into the metal sleeve 130.

[0064] Referring to FIGS. 2 and 6, in some embodiments of the present application, the outer peripheral wall of the welding head 200 is provided with a vertical plane 201, which can be abutted by the fastening screw 310 of the peripheral wall of the welding sleeve 300 after the welding head 200 is inserted into the circular hole of the welding sleeve 300, so as to achieve fixation of the welding head 200, and the abutment of the plane and the fastening screw 310 is more stable, having a certain circumferential fixation effect.

[0065] Referring to FIG. 3, in some embodiments of the present application, the welding head 200 includes a welding head body 240 and a cover plate 250, and the material of the thermocouple wire is different from the material of the welding head body 240. Specifically, the thermocouple wire can be made of nickel-chromium alloy material, and the welding head body 240 and the cover plate 250 can be made of H13 die steel. The positioning protrusion 230 is specifically provided on the cover plate 250, and the vertical plane 201 is provided on the welding head body 240. The upper end surface of the welding head body 240 is provided with a first insertion hole 241 and a second insertion hole 242, and the thermocouple wire 210 and the conductive structure 220 are respectively inserted into the first insertion hole 241 and the second insertion hole 242. As shown in FIG. 5, the first insertion hole 241 extends from the upper end surface of the welding head body 240 to the friction surface 202 at the bottom of the welding head 200. The second insertion hole 242 is a blind hole located at the upper end region of the welding head body 240. The cover plate 250 is detachably mounted on the upper end of the welding head body 240 to axially position the thermocouple wire 210 and the conductive structure 220, and the cover plate 250 is used to press the thermocouple wire 210 and the conductive structure 220 to axially position them, so as to make the installation stable. Specifically, the cover plate 250 is provided with a connecting hole 255, the upper end surface of the welding head body 240 is provided with a threaded hole 243, the connecting hole 255 is aligned with the threaded hole 243 and is screwed into the threaded hole, so as to achieve connection and fixation of the cover plate 250 and the welding head body 240.

[0066] In further embodiments of the present application, the thermocouple wire 210 is wrapped with an insulating tube 211 inserted into the first insertion hole 241, and the upper end of the thermocouple wire 210 extends out of the insulating tube 211, and the lower end of the thermocouple wire 210 is flush with the friction surface 202 of the welding head body 240 or / and in contact with the welding head body 240. Thus, only the lower end of the thermocouple wire 210 is in contact with the temperature measuring area of the welding head body 240, avoiding the thermocouple wire 210 contacting the welding head body 240 except the temperature measuring area.

[0067] In specific embodiments of the present application, as shown in FIG. 8, the first insertion hole 241 is a through hole, and specifically, the first insertion hole 241 can be a circular hole for easy processing. The lower end of the thermocouple wire 210 is flush with the friction surface 202 of the welding head body 240, and the lower end of the thermocouple wire 210 is separated from the welding head body 240 by the insulating tube 211. When the lower end of the thermocouple wire 210 is not in direct contact with the welding head body 240, the friction surface 202 will be in contact with the surface of the workpiece 101 during processing, and the lower end of the thermocouple wire 210 will also be in contact with the workpiece 101, thereby achieving electrical conduction between the lower end of the thermocouple wire 210 and the lower end of the welding head body 240 through the workpiece 101, and achieving temperature measurement of the temperature measuring area of the lower end of the welding head body 240. Of course, the lower end of the thermocouple wire 210 can also be in direct contact with the welding head body 240. It can be understood that the first insertion hole 241 is a circular hole that is adapted to the insulating tube 211, thereby achieving positioning effect of the insulating tube 211 and the thermocouple wire 210.

[0068] Referring to FIG. 9, in other specific embodiments of the present application, the first insertion hole 241 is a through hole, the outer contour of the insulating tube 211 is adapted to the first insertion hole 241 and inserted into the first insertion hole 241, the lower end of the thermocouple wire 210 is provided with a radial protruding head 212, the outer periphery of the radial protruding head 212 is in contact with the inner wall of the first insertion hole 241, and specifically, the radial protruding head 212 is in interference fit with the first insertion hole 241, the lower end of the insulating tube 211 is in abutment with the upper end surface of the radial protruding head 212, thereby achieving axial positioning effect of the insulating tube 211, and the lower end surface of the radial protruding head 212 is flush with the friction surface 202 of the welding head body 240, thereby facilitating installation. Specifically, the first insertion hole 241 can be a circular hole for easy processing.

[0069] Referring to FIG. 10, in another specific embodiment of the present application, the thermocouple wire 210 is wrapped with an insulating tube 211, and the upper and lower ends of the thermocouple wire 210 extend out of the insulating tube 211, the first insertion hole 241 is a first stepped hole with a wide upper end and a narrow lower end, to accommodate the lower end of the thermocouple wire 210 extending out of the insulating tube 211 to be in contact with the welding head body 240, and the lower end of the thermocouple wire 210 is flush with the friction surface 202 of the welding head body 240.

[0070] Referring to FIG. 3 and FIG. 7, in a further embodiment of the present application, a first insulating sleeve 251 is mounted on the cover plate 250, the first insulating sleeve 251 is provided with a through hole 252 in the center, and the upper end of the thermocouple wire 210 passes through the through hole 252 and extends out of the cover plate 250, so as to be connected with the electrical connection structure (metal sleeve 130) at the upper end. In a specific embodiment, the first insulating sleeve 251 can be in the shape of a stepped shaft with a narrow upper part and a wide lower part, and the cover plate 250 is provided with a first stepped hole 253 for fitting the first insulating sleeve 251, so that the cover plate 250 axially limits the first insulating sleeve 251 from moving upward, achieving a downward pressing effect on the first insulating sleeve 251, and the upper end of the insulating tube 211 is attached to the bottom surface of the first insulating sleeve 251, thereby achieving an axial limiting effect. The insulating tube 211 can be made of ceramic material and is fixedly connected with the thermocouple wire 210.

[0071] Of course, in other embodiments, the first insulating sleeve 251 can be in the shape of a hollow cylinder and is fixed in the hole position of the cover plate 250 by means of fasteners or glue.

[0072] Referring to FIG. 3, the conductive structure 220 is a metal column, the peripheral wall of the metal column is provided with a circumferential protrusion 221, a second insulating sleeve 260 is sleeved on the metal column, the upper end of the metal column protrudes out of the second insulating sleeve 260 and the cover plate 250, the second insulating sleeve 260 is located above the circumferential protrusion 221, and the central hole of the second insulating sleeve 260 has a smaller diameter than the circumferential protrusion 221. In a specific embodiment, the second insulating sleeve 260 can be in the shape of a stepped shaft with a narrow upper part and a wide lower part, and the cover plate 250 is provided with a second stepped hole 254 for fitting the second insulating sleeve 260, so that the cover plate 250 axially fixes the metal column. The first insulating sleeve 251 and the second insulating sleeve 260 can be made of insulating materials such as rubber, plastic or ceramic.

[0073] Of course, in other embodiments, the second insulating sleeve 260 can be in the shape of a hollow cylinder and is fixed in the hole position of the cover plate 250 by means of fasteners or glue.

[0074] The present application also provides a temperature measuring welding head, which comprises the above-mentioned friction welding temperature measuring head fixing structure, a welding main shaft and a welding sleeve. The welding main shaft drives the welding sleeve 300 and the welding head to rotate, thereby realizing friction welding. The friction welding temperature measuring head fixing structure is mounted on the welding sleeve 300, and specifically, the welding head 200 and the female seat 100 are inserted into the circular hole of the welding sleeve 300.

[0075] Referring to Fig. 11, in some embodiments of the present application, two of the electric connection structures are elastically deformable to be in elastic contact with the thermocouple wire 210 and the conductive structure 220 respectively. Specifically, the electric connection structure is an elastically deformable metal spring 270, which can be elastically deformed to achieve close contact with the thermocouple wire 210 and the conductive structure 220, and when separation is needed, the resistance is smaller. In addition, the elastic deformation of the electric connection structure can also compensate for the installation error of the welding head 200 when the distance between the welding head 200 and the electric connection structure becomes larger, so as to ensure that the electric connection structure can be stably connected with the thermocouple wire 210 and the conductive structure 220.

[0076] Of course, in order to achieve elastic contact between the electric connection structure and the thermocouple wire 210 and the conductive structure 220, other ways can also be used. As shown in Fig. 12, in other embodiments of the present application, the female seat 100 is elastically movably mounted on the welding sleeve 300 to apply an elastic force to the two electric connection structures towards the thermocouple wire 210 and the conductive structure 220. Specifically, the female seat 100 is provided with an elastic member 280 on the side away from the welding head 200. The elastic member 280 can be a compression spring, which applies an elastic force to the conductive structure 220 to make it in elastic contact with the thermocouple wire 210 and the conductive structure 220. The conductive structure 220 can be a metal sheet 290, which has a contact groove for embedding the thermocouple wire 210 and the conductive structure 220 to achieve stable positioning and contact.

[0077] Referring to Figs. 13 and 14, the present application also provides a temperature measurement system, which comprises a temperature measurement welding head, a transmitting device 500 and a sensing device 600.

[0078] One of the transmitting device 500 and the sensing device 600 is arranged on the temperature measurement welding head, and the other is connected with the temperature measurement welding head and can rotate with the temperature measurement welding head. During rotation, when the transmitting device 500 and the sensing device 600 are in front-to-front alignment, the sensing device 600 can receive the medium emitted by the transmitting device 500. That is, one of the transmitting device 500 and the sensing device 600 rotates with the taper handle, and the other is fixed on the outside and does not rotate with the taper handle. Thus, during one rotation, the transmitting device 500 and the sensing device 600 will be aligned once, and by recording the time of each alignment and the position of the test at each alignment, the measured temperature data can be matched with the position. The temperature measurement assembly is used to measure the temperature of the core area of the weld, and as the temperature measurement assembly rotates, the core area of the weld can be measured in a full circumferential direction. In combination with the alignment of the sensing device 600 and the transmitting device 500, the measured temperature data can be matched with the position, so as to obtain the temperature distribution of the core area of the weld.

[0079] The emitting device 500 is a light emitting element arranged outside the temperature measuring welding head, and the sensing device 600 is a photosensitive sensing element installed on the temperature measuring welding head. When the emitting device 500 is aligned with the sensing device 600, the light emitting element emits a light beam to the sensing device 600, the sensing device 600 is triggered after receiving the light beam, and the time of triggering is recorded, so that the measurement temperature corresponding to the triggering time is obtained, and the measurement position corresponding to the measurement temperature is obtained.

[0080] The welding sleeve 300 is provided with a mounting cavity 320 at the upper end, the sensing device 600 is installed in the mounting cavity 320, and the side wall of the mounting cavity 320 is provided with a light inlet hole 321 corresponding to the sensing device 600 at the outer periphery of the sensing device 600. When the emitting device 500 is opposite to the sensing device 600, the medium emitted by the emitting device 500 can pass through the light inlet hole 321 to trigger the sensing device 600. The mounting cavity 320 is used to shield the sensing device 600, so as to avoid the interference of other interference sources outside, such as the direct light of the light source outside the sensing device 600, so as to ensure that the sensing device 600 can only be triggered by the emitting device 500. The light inlet hole 321 can make the medium (light beam) emitted by the emitting device 500 reach the sensing device 600 when the sensing device 600 and the emitting device 500 are opposite to each other, so as to be sensed and detected by the sensing device 600. In addition, a circuit board can be arranged in the mounting cavity 320, the circuit board is protected, the sensing device 600 is installed on the circuit board, the integration of the circuit board 230 is improved, so that the triggering information can be transmitted to the control system on the circuit board, and the temperature measuring assembly also needs to be connected with the circuit board, so as to obtain the information measured by the temperature measuring assembly.

[0081] In some embodiments of the present application, the emitting device 500, the sensing device 600 and the light inlet hole 221 are arranged in multiple groups around the rotation axis of the rotating main shaft 100, so as to realize multi-position measurement, and the alignment is realized multiple times in the same rotation period of the welding head assembly, and the accuracy of temperature distribution measurement is further improved.

[0082] The present application also provides a welding seam temperature measurement method, which comprises the following steps:

[0083] S1, the rotating driving mechanism drives the temperature measuring welding head to rotate, and the temperature measuring welding head rotates to rub the welding seam area of the to-be-welded part 700;

[0084] S2, the temperature measuring welding head rotates and performs real-time temperature measurement on the welding core area, so as to obtain a temperature-time curve; usually, the measurement is performed at a certain frequency, and is not continuous, but the acquisition frequency is generally large, for example, the measurement acquisition frequency can be set to 480 Hz, dense point data can be formed, and finally a temperature-time curve is fitted, as shown in FIG. 16.

[0085] S3, when rotating to the front of the launch device 500 and the induction device 600, the induction device 600 receives the medium launched by the launch device 500, and records the time at this time, and sets the time at this time as the calibration time; as shown in Figure 15, the welding head assembly rotates clockwise and feeds forward, and the welding core area is usually divided into four sub-areas, which are return side area 710, rear end area 720, forward side area 730 and front end area 740.

[0086] S4, the welding core area is subdivided into multiple sub-areas, and the temperature distribution of each sub-area is obtained according to the temperature-time curve, the calibration time and the temperature testing position of the temperature testing assembly.

[0087] Figure 16 is a part of the temperature curve, as shown in Figure 15, the induction device 600 and the thermocouple wire 210 are in the same circumferential direction, when the induction device 600 and the launch device 500 are aligned and triggered, the induction device 600, the launch device 500 and the thermocouple wire 210 are in the same straight line at this time, the time at this time is the calibration time, the temperature at this time is the measured temperature of the position of the thermocouple wire 210, the temperature of the thermocouple wire 210 at the center position of the return side area at this time is the temperature of the return side area at the calibration time, and since the rotation of the welding head assembly is uniform, the temperature of the corresponding area can be obtained by time shift according to the temperature of the return side area corresponding to the calibration time, such as when the thermocouple wire 210 rotates 90° to reach the center position of the rear end area, then the temperature corresponding to the temperature curve of the calibration time is the measured temperature of the center position of the rear end area, as described above, the temperature circumferential distribution of the welding core area can be obtained by determining the position corresponding to the calibration time through the temperature curve, the sub-areas can be divided according to the needs, and the number can be set according to the needs, so that the temperature distribution of the welding core area can be accurately obtained, and strong data support is provided for subsequent welding quality research and control.

[0088] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A friction welding temperature measuring welding head fixing structure, characterized in that: The utility model relates to a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

2. The friction welding temperature measuring tool holder fixing structure according to claim 1, characterized by The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

3. The friction welding temperature measuring tool holder fixation structure according to claim 1, characterized by The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

4. The temperature measuring friction welding head fixing structure according to claim 2, wherein The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

5. The friction welding temperature measuring tool holder fixation structure according to claim 4, characterized by The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

6. The friction welding temperature measuring tool holder fixation structure according to claim 4, characterized by The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

7. The temperature measuring friction welding head fixing structure according to any one of claims 1 to 6, characterized in that The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

8. The friction welding temperature measuring tool holder fixation structure according to claim 7, characterized by The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment.

9. The friction welding temperature measuring tool holder fixation structure according to claim 8, characterized by The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility model discloses a welding head and a female seat, and belongs to the field of welding equipment. The utility 10. The friction welding temperature measuring tool holder fixation structure according to claim 8, characterized by The first insertion hole (241) is a through hole, the lower end of the thermocouple wire (210) is provided with a radial protruding head (212), the outer periphery of the radial protruding head (212) is in contact with the inner wall of the first insertion hole (241), and the lower end of the insulating tube (211) is in abutment with the upper end surface of the radial protruding head (212).

11. The temperature measuring friction welding head fixation structure according to claim 8, wherein The cover plate (250) is provided with a first insulating sleeve (251), the center of the first insulating sleeve (251) is provided with a through hole (252), the upper end of the thermocouple wire (210) passes through the through hole (252) and extends out of the cover plate (250), and the upper end of the insulating tube (211) is in abutment with the bottom surface of the first insulating sleeve (251).

12. A temperature measuring welding tip, characterized by The friction welding temperature measuring head fixing structure comprises: a welding sleeve (300); The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300).

13. A temperature measurement system, characterized by The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises:

14. A method of measuring the temperature of a weld, characterized by, The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to 11 is installed on the welding sleeve (300). The friction welding temperature measuring head fixing structure comprises: The friction welding temperature measuring head fixing structure according to any one of claims 1 to

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