A new type of roller welding tool and its welding process

Abstract

The present invention discloses a novel roller welding tool and a welding process thereof, comprising a roller, a roller body support mechanism, two sets of fixing mechanisms and a welding mechanism, wherein the roller frame is on the roller body support mechanism, the fixing mechanism is arranged corresponding to both sides of the roller, the welding mechanism is fixed on the roller body support mechanism and is arranged in cooperation with the roller, the fixing mechanism comprises a driving module group 1, a rotating component, a fixing frame group and a temperature adjustment component, wherein the temperature adjustment component comprises a stop block, two electric push rods 1 are arranged in the stop block facing each other, the driving end of the electric push rod 1 is connected to a connecting block, long grooves are provided on both sides of the stop block, a slider is slidably matched in the long groove, the slider is fixedly connected to the connecting block, the slider is connected to an air bag, and a heat exchange block is embedded on the upper side of the air bag. The present invention can control the temperature during welding and improve the welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a novel roller welding tool and a welding process thereof. Background Art

[0002] Roller is the main working part and tool used to make metal produce continuous plastic deformation on the rolling mill. Roller welding is a technology that builds a wear-resistant alloy layer on the surface of the roll to improve the wear resistance and service life of the roll. This technology is very important for the roll, which is subjected to huge pressure and friction during the rolling process. Roller surfacing technology usually adopts arc surfacing or laser surfacing methods, using high hardness and high wear resistance alloy materials, such as tungsten carbon alloy, chromium iron alloy, etc.

[0003] The roller consists of three parts: the roller body, the roller neck and the shaft head. The roller body is the actual working part of the rolled metal and is also the part that is most susceptible to wear during working applications. Normal wear and abnormal damage will occur during use, causing irregular pits on the roller surface. If the pits are too large, it will affect normal operation and need to be replaced or repaired.

[0004] Rollers can be divided into solid and hollow. Solid rolls have extremely high rigidity and strength, which can meet the requirements of heavy-load rolling and are not easily worn. Hollow rolls are required for high-speed rolling or situations requiring precise temperature control. The strength of hollow rolls is not as good as that of solid rolls. In addition, when they are used in situations of high-speed rolling, their surfaces are more prone to wear.

[0005] The existing welding equipment for rolls includes a basic fixing mechanism and a welding tool, which can meet the cladding requirements of most rolls. However, for hollow rolls, due to the high temperature during the cladding process, the hollow rolls may generate thermal stress, which may cause the rolls to deform or crack. In particular, between the cladding layer and the roll base, due to the different thermal expansion coefficients, stress concentration is more likely to occur. Therefore, a new welding tool suitable for the cladding requirements of hollow rolls is needed. Summary of the invention

[0006] The purpose of the present invention is to provide a new type of roller welding tool and welding process thereof to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a new type of rolling mill roller welding tooling and a welding process thereof, comprising a rolling mill roller, a rolling mill body supporting mechanism, two sets of fixing mechanisms and a welding mechanism, wherein the rolling mill roller frame is on the rolling mill body supporting mechanism, the fixing mechanism is arranged corresponding to both sides of the rolling mill roller, and is used to fix and adjust the two ends of the rolling mill roller, and the welding mechanism is fixed on the rolling mill body supporting mechanism and is arranged in conjunction with the rolling mill roller, and is used to perform surfacing and inspection on the surface of the rolling mill roller.

[0008] According to the above technical solution, the fixing mechanism includes a driving module group 1, a rotating component, a fixed frame group and a temperature control component, wherein the rotating component is fixed to the driving end of the driving module group 1, the fixed frame group is installed at the end of the rotating component, and the temperature control component is arranged on the fixed frame group. The temperature control component includes a stop block, and two electric push rods 1 are arranged back to back in the stop block. The driving end of the electric push rod 1 is connected to a connecting block, and long grooves are provided on both sides of the stop block. A slider is slidably fitted in the long groove. The slider is fixedly connected to the connecting block, and the slider is connected to an airbag. A heat exchange block is embedded on the upper side of the airbag. The slider is a hollow structure with openings at both ends. The slider and the airbag form a closed space, and input pumps and output pumps are externally connected to both ends of the slider.

[0009] According to the above technical solution, when the electric push rod moves, it will drive the slider to move, and the long groove is used for guiding and supporting, assisting the displacement of the slider. Blocks are provided on both sides of the stop block to limit the inward movement of the heat exchange block. When the input pump introduces gas into the airbag, the airbag expands to lift the heat exchange block upward. Preferably, the input pump is connected to a component that can adjust the airflow temperature, and the airflow temperature is changed according to actual heating and cooling requirements. The heating method is not limited to electric heating, etc., and the cooling method is not limited to coolant refrigeration. An internal pressure detection module and a temperature detection module are provided in the slider.

[0010] According to the above technical solution, a plurality of fins are provided on the heat exchange block.

[0011] According to the above technical solution, a slide groove is opened on the upper side of the stop block, a pressure sensing module is laid on the inner wall of the slide groove, a test block is slidably arranged in the slide groove, and a plurality of strips are arranged on the surface of the test block.

[0012] According to the above technical solution, the fixed frame group includes two electric push rods and a plurality of articulated frames, wherein one end of the articulated frame is connected to the driving end of the second electric push rod, and the other end of the articulated frame is used to install the temperature control component.

[0013] According to the above technical solution, the rotating assembly includes a rotating disk, a transmission gear set 1, a plurality of rotating rods, a transmission gear set 2 and a motor 1, wherein one side of the rotating disk is connected to the electric push rod 2, the transmission gear set 1 and the transmission gear set 2 are respectively composed of a driving gear and a driven gear, the other side of the rotating disk is equipped with a driven gear of the transmission gear set 1, one end of the rotating rod is connected to the driving gear of the transmission gear set 1, the other end of the rotating rod is connected to the driven gear of the transmission gear set 2, and the driving end of the motor 1 is connected to the driving gear of the transmission gear set 2.

[0014] According to the above technical solution, the welding mechanism includes a group of cylinder one, a welding frame, a detection module and a welding module, wherein one side of the welding frame is hinged to the driving end of the cylinder one, and one side of the hinged end is provided with a hinge block for auxiliary support, the detection module is installed on the lower side of the welding frame, and the welding module is arranged on the welding frame.

[0015] According to the above technical solution, the roller body support mechanism includes a roller body support assembly and two end support assemblies, wherein the roller body support assembly is composed of a group of rollers with a lifting structure, which is arranged on the lower side of the rolling roller for lifting the rolling roller, and the two end support assemblies are arranged on both ends of the rolling roller and on the rotating rod.

[0016] According to the above technical solution, the two end support components are composed of a group of fixed plates and support frames, wherein the fixed plates are separated and arranged with a spacing of at least the length of a roller body, and the support frames are arranged on the rotating rod.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a temperature control component, can stably preheat the roller before welding, and during the welding process, by adjusting the position of the heat exchange block through an electric push rod, the unwelded position can be preheated in advance, saving preheating time, further, another group of heat exchange blocks can be adjusted to the welding position for heat exchange and cooling, avoiding local overheating, thereby achieving temperature control during welding and improving welding quality; by providing a pressure sensing module, the precise locking of the inside of the roller can be assisted to avoid deformation caused by excessive locking of the inner wall or incomplete locking of the inner wall resulting in inaccurate movement during welding, further improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the fixing mechanism of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the fixing mechanism of the present invention;

[0022] Figure 4 is a schematic diagram of a fixing frame assembly of the present invention;

[0023] Figure 5 is a cross-sectional view of the abutment block of the present invention;

[0024] Figure 6 is a partial cross-sectional view of the fixing frame assembly of the present invention;

[0025] Figure 7 The present invention Figure 6 A magnified schematic diagram of area A;

[0026] Figure 8 It is a schematic diagram of the block slideway of the present invention;

[0027] Fig. 9 is a schematic diagram of a rotating assembly of the present invention;

[0028] Fig.10 It is a schematic diagram of the welding mechanism of the present invention;

[0029] Fig.11 is a schematic diagram of a welding module of the present invention;

[0030] Fig.12 It is a schematic diagram of the annular seam welding mechanism of the present invention;

[0031] In the figure: 1, roller; 20, driving module 1; 21, rotating assembly; 211, rotating disk; 212, transmission gear set 1; 213, rotating rod; 214, transmission gear set 2; 215, motor 1; 22, fixed frame assembly; 221, electric push rod 2; 222, articulated frame; 23, temperature control assembly; 231, stop block; 2311, stepping block; 232, electric push rod 1; 233, connecting block; 234, slider; 235 , airbag; 236, heat exchange block; 2361, fin; 237, test block; 30, cylinder one; 31, welding frame; 32, detection module; 33, welding module; 331, welding head; 332, multi-axis adjustment assembly; 40, roller body support assembly; 41, fixed plate; 42, support frame; 50, moving assembly; 51, lifting frame; 52, suction hood; 53, adjustable welding assembly; 54, tray; 55, rotating assembly. DETAILED DESCRIPTION

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

[0033] See also Figure 1-12 The present invention provides a technical solution: a new type of roller welding tool, including a roller 1, a roller body support mechanism, two sets of fixing mechanisms and a welding mechanism. The roller 1 is mounted on the roller body support mechanism. The fixing mechanisms are arranged at both sides of the roller 1 and are used to fix and adjust the positions of the two ends of the roller 1. The welding mechanism is fixed on the roller body support mechanism and is arranged in conjunction with the roller 1, and is used to perform surfacing and inspection on the surface of the roller 1.

[0034] The fixing mechanism includes a driving module 20, a rotating component 21, a fixed frame group 22 and a temperature control component 23, wherein the rotating component 21 is fixed to the driving end of the driving module 20, the fixed frame group 22 is installed at the end of the rotating component 21, and the temperature control component 23 is arranged on the fixed frame group 22. The temperature control component 23 includes a stop block 231, in which two electric push rods 232 are arranged back to back, and the driving end of the electric push rod 232 is connected to a connecting block 233, long grooves are opened on both sides of the stop block 231, and a slider 234 is slidably fitted in the long groove. The slider 234 is fixedly connected to the connecting block 233, and the slider 234 is connected to an airbag 235. A heat exchange block 236 is embedded on the upper side of the airbag 235. The slider 234 is a hollow structure with openings at both ends. The slider 234 and the airbag 235 form a closed space, and an input pump and an output pump are externally connected to both ends of the slider 234.

[0035] Supplementary explanations based on the above structure are as follows: When the electric push rod 232 moves, it will drive the slider 234 to move. The long groove is used for guiding and supporting, and assists the displacement of the slider 234. Blocks 2311 are provided on both sides of the stop block 231 to limit the inward movement of the heat exchange block 236. When the input pump introduces gas into the airbag 235, the airbag 235 expands and lifts the heat exchange block 236 upward. Preferably, the input pump is connected to a component that can adjust the airflow temperature. The airflow temperature is changed according to actual heating and cooling requirements. The heating method is not limited to electric heating, etc., and the cooling method is not limited to coolant refrigeration. An internal pressure detection module and a temperature detection module are provided in the slider 234.

[0036] like Figure 7 As shown, a plurality of fins 2361 are provided on the heat exchange block 236 to expand the contact area and improve the heat exchange efficiency.

[0037] like Figure 8 As shown, a slide groove is provided on the upper side of the stop block 231, a pressure sensing module is laid on the inner wall of the slide groove, a test block 237 is slidably provided on the slide groove, and a plurality of strips are provided on the surface of the test block 237 to increase friction.

[0038] The fixed frame assembly 22 includes an electric push rod 221 and a plurality of articulated frames 222 , wherein one end of the articulated frame 222 is connected to the driving end of the electric push rod 221 , and the other end of the articulated frame 222 is used to install the temperature adjustment component 23 .

[0039] In actual operation, the fixed frame group 22 is used to fix the inside of the roller 1. The expansion range of the articulated frame 222 can be changed through the telescopic movement of the electric push rod 221 to achieve internal fixation of rollers 1 of different specifications. The test block 237 is used to detect whether the fixed frame group 22 is locked in place.

[0040] The rotating assembly 21 includes a rotating disk 211, a transmission gear set 1 212, a plurality of rotating rods 213, a transmission gear set 214 and a motor 1 215, wherein one side of the rotating disk 211 is connected to the electric push rod 2 221, the transmission gear set 1 212 and the transmission gear set 2 214 are respectively composed of a driving gear and a driven gear, the other side of the rotating disk 211 is installed with the driven gear of the transmission gear set 1 212, one end of the rotating rod 213 is connected to the driving gear of the transmission gear set 1 212, the other end of the rotating rod 213 is connected to the driven gear of the transmission gear set 214, and the driving end of the motor 1 215 is connected to the driving gear of the transmission gear set 2 214.

[0041] In one embodiment, the driving gear of the transmission gear set 214 is driven to rotate by the motor 1 215, and the driven gear of the transmission gear set 214 is driven to drive the rotating rod 213 to rotate synchronously, so that the driving gear of the transmission gear set 1 212 driven by the rotating rod 213 drives the driven gear of the transmission gear set 1 212 to rotate, and finally the rotation effect of the rotating disk 211 is achieved. Preferably, an annular groove (not shown in the figure) that matches the driving gear of the transmission gear set 1 212 can be provided on the disk surface of the rotating disk 211, so as to improve the support of the transmission gear set 1 212 on the rotating disk 211 and avoid the displacement between the gears of the transmission gear set 1 212 without affecting the rotation of the rotating disk 211.

[0042] The driving module 20 preferably adopts a two-axis driving structure, and through two vertically arranged cylinder driving components, the rotating component 21 can be freely moved in the horizontal and vertical directions to align the roller 1.

[0043] like Fig.10 As shown, the welding mechanism includes a group of cylinder 30, welding frame 31, detection module 32 and welding module 33, wherein one side of the welding frame 31 is hinged to the driving end of the cylinder 30, and one side of the hinged end is provided with an auxiliary supporting hinge block 34, the detection module 32 is installed on the lower side of the welding frame 31, and the welding module 33 is arranged on the welding frame 31.

[0044] In one embodiment, the detection module 32 adopts a structure that combines a screw drive and a visual inspection module, and the visual inspection module is driven by the screw to move and adjust its position, so as to check the surface welding state of the roller 1. The welding module 33 adopts a structure that combines a welding head 331 and a multi-axis adjustment component 332, wherein the multi-axis adjustment component 332 is used to locally adjust the position of the welding head 331. Optionally, it is assembled by cylinders in three directions, and the welding head 331 is externally connected to a welding material conveying device.

[0045] In actual operation, when the cylinder 30 pulls the welding frame 31 downward, the welding frame 31 drives the detection module 32 and the welding module 33 to deflect to facilitate the feeding of the roller 1. When the roller 1 is placed and positioned and fixed, the cylinder 30 pushes the welding frame 31 upward so that it is erected above the roller 1, and the detection module 32 cooperates with the welding module 33 to perform local fine-tuning.

[0046] The roller body support mechanism includes a roller body support assembly 40 and two end support assemblies, wherein the roller body support assembly 40 is composed of a group of rollers with a lifting structure, which is arranged on the lower side of the roller 1 for lifting the roller 1, and the two end support assemblies are arranged on both ends of the roller 1 and on the rotating rod 213 for assisting the positioning of the rotating assembly 21 and improving the stability of the fixed frame assembly 22.

[0047] The two end support components are specifically composed of a set of fixed plates 41 and support frames 42, wherein the fixed plates 41 are separated and arranged with a spacing of at least the length of the roller body of the roller 1, and the support frames 42 are arranged on the rotating rod 213. When the fixing mechanism is pushed into the roller 1, the support frames 42 will press against the fixed plates 41 to play the role of auxiliary positioning and support.

[0048] In one embodiment, Fig.12 As shown, in order to improve the comprehensiveness of the welding of the rolling mill 1, a circumferential seam welding mechanism is additionally provided on the basis of the above structure, and the circumferential seam welding mechanism includes a moving assembly 50, a lifting frame 51, a suction cover 52, an adjustable welding assembly 53, a tray 54 and a rotating assembly 55, wherein the lifting frame 51 is fixed to the moving end of the moving assembly 50, the suction cover 52 is installed at the driving end of the lifting frame 51, the adjustable welding assembly 53 is arranged in conjunction with the suction cover 52, the rotating assembly 55 is arranged at the lower side of the lifting frame 51, and the tray 54 is arranged at one side of the rotating assembly 55.

[0049] It should be noted that: the moving component 50 adopts but is not limited to a screw drive structure, the lifting frame 51 adopts but is not limited to a cylinder drive structure, the size of the suction hood 52 is consistent with the cross-sectional size of the roller 1, and a suction cup is provided at the bottom of the suction hood 52, which grasps the roller 1 by means of but not limited to negative pressure adsorption, the structure of the adjustable welding component 53 is consistent with the setting of the welding module 33, the rotating component 55 adopts a combination of several wheels and motors, the motor controls the rotation of the wheels, the roller 1 is placed between the wheels, and the rotation of the wheels drives the roller 1 to rotate, and the tray 54 is used to feed the roller 1.

[0050] The specific welding process is as follows:

[0051] Step 1: feeding, moving the roller 1 to the roller body support assembly 40;

[0052] Step 2: Positioning and locking. The driving module 1 20 adjusts the position of the fixed frame assembly 22. After aligning it with the hollow part of the roller 1, the driving module 1 20 pushes the fixed frame assembly 22 into the roller 1. The electric push rod 1 232 contracts and opens the articulated frame 222. The data fed back by the pressure sensing module determines whether the locking is complete.

[0053] Step 3: Adjust the position of the welding mechanism. After the welding frame 31 is set up above the roller 1, the fixing mechanism cooperates with the detection module 32 to detect and record the initial state of the surface of the roller 1, and adjust the welding position of the welding module 33;

[0054] Step 4: Preheating. According to the ambient temperature and the welding standard, the required preheating temperature range is set. The heat exchange airflow temperature is adjusted to the required temperature range. The input pump inputs the airflow into the airbag 235. During this process, the output pump is in a closed state. The input stops when the internal pressure reaches a certain value. At this time, the airflow is in full contact with the fin 2361, and the heat is transferred to the roller 1 through the stop block 231. During this period, when the temperature detection module detects that the internal temperature drops to a certain value, the input pump and the output pump will replace the internal airflow so that the internal pressure is in a stable range to ensure stable heat exchange.

[0055] Step 5: Welding. After preheating, the welding mechanism starts to start surfacing. The rotating assembly 21 drives the roller 1 to rotate at a constant speed at a certain speed. The fixing mechanism adjusts the position of the roller 1. During this period, one of the electric push rods 232 in the block 231 will push the slider 234 to extend to the unwelded part to preheat the unwelded part. The process is the same as step 4, and the other electric push rod 232 moves the slider 234 to the corresponding position of the welding position to change the internal heat exchange air flow temperature. At this time, the heat exchange block 236 absorbs heat to prevent local high temperature at the welding position.

[0056] Step 6: Quality inspection: after welding is completed, the fixing mechanism controls the roller 1 to move and rotate, and the inspection module 32 performs a comprehensive inspection on the surface of the roller 1 to determine whether local repair welding is required;

[0057] Step 7: Circumferential seam welding. After the roller body surfacing of the roller 1 is completed, the roller 1 is moved to the pallet 54 for cooling. The lifting frame 51 moves to the top of the roller 1 and grabs it to the rotating component 55 and releases it. The adjustable welding component 53 welds the circular seam of the roller 1.

[0058] Specifically, in step 2, the locking method is as follows: before being pushed into the interior of the roller 1, the electric push rod 232 is in an extended state, at which time the articulated frame 222 is opened to the minimum, and the fixed frame group 22 can smoothly enter the interior of rollers 1 of different specifications. After entering, the electric push rod 232 begins to shrink, and the articulated frame 222 slowly opens, so that the stop block 231 is close to the inner wall of the roller 1. In the process from the stop block 231 contacting the inner wall of the roller 1 to being completely close, the test block 237 slides in the slide groove due to the reaction force brought by the roller 1, and the pressure sensing module can detect the moving pressure signal. When the stop block 231 and the roller 1 are completely locked, the test block 237 no longer moves, and the pressure sensing module detects a fixed pressure signal, which is used as a basis for judgment.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of roller welding tool, including a roller body supporting mechanism, two sets of fixing mechanisms and a welding mechanism, characterized in that: The roller (1) is mounted on the roller body support mechanism, the fixing mechanism is arranged corresponding to both sides of the roller (1) and is used to fix and adjust the positions of the two ends of the roller (1), and the welding mechanism is fixed on the roller body support mechanism and is arranged in conjunction with the roller (1) and is used to perform surfacing welding and inspection on the surface of the roller (1); The fixing mechanism comprises a driving module (20), a rotating assembly (21), a fixing frame (22) and a temperature control assembly (23), wherein the rotating assembly (21) is fixed to the driving end of the driving module (20), the fixing frame (22) is mounted on the end of the rotating assembly (21), the temperature control assembly (23) is arranged on the fixing frame (22), and the temperature control assembly (23) comprises a stop block (231), two electric push rods (232) are arranged in opposite directions in the stop block (231), and the electric push rods (232) drive the temperature control assembly (231). The movable end is connected to a connecting block (233), long grooves are provided on both sides of the stop block (231), a slider (234) is slidably fitted in the long groove, the slider (234) is fixedly connected to the connecting block (233), the slider (234) is connected to an airbag (235), a heat exchange block (236) is embedded on the upper side of the airbag (235), the slider (234) is a hollow structure with openings at both ends, the slider (234) and the airbag (235) form a closed space, and the two ends of the slider (234) are externally connected to an input pump and an output pump; The heat exchange block (236) is provided with a plurality of fins (2361); A slide groove is provided on the upper side of the stop block (231), a pressure sensing module is laid on the inner wall of the slide groove, a test block (237) is slidably arranged on the slide groove, and a plurality of strips are arranged on the surface of the test block (237); The fixed frame group (22) comprises a second electric push rod (221) and a plurality of articulated frames (222), wherein one end of the articulated frame (222) is connected to the driving end of the second electric push rod (221), and the other end of the articulated frame (222) is used to install the temperature control component (23); The rotating assembly (21) comprises a rotating disk (211), a transmission gear set 1 (212), a plurality of rotating rods (213), a transmission gear set 2 (214) and a motor 1 (215), wherein one side of the rotating disk (211) is connected to the electric push rod 2 (221), the transmission gear set 1 (212) and the transmission gear set 2 (214) are respectively composed of a driving gear and a driven gear, the other side of the rotating disk (211) is provided with a driven gear of the transmission gear set 1 (212), one end of the rotating rod (213) is connected to the driving gear of the transmission gear set 1 (212), the other end of the rotating rod (213) is connected to the driven gear of the transmission gear set 2 (214), and the driving end of the motor 1 (215) is connected to the driving gear of the transmission gear set 2 (214); The welding mechanism comprises a group of cylinder one (30), a welding frame (31), a detection module (32) and a welding module (33), wherein one side of the welding frame (31) is hinged to the driving end of the cylinder one (30), and one side of the hinged end is provided with a hinge block (34) for auxiliary support.

2. A new type of roller welding tool according to claim 1, characterized in that: When the electric push rod 1 (232) moves, it drives the slider (234) to move. The long groove is used for guiding and supporting, and assisting the displacement of the slider (234). Blocks (2311) are provided on both sides of the stop block (231) for limiting the heat exchange block (236) from moving inward. When the input pump introduces gas into the airbag (235), the airbag (235) expands and lifts the heat exchange block (236) upward.

3. A new type of roller welding tool according to claim 2, characterized in that: The detection module (32) is installed on the lower side of the welding frame (31), and the welding module (33) is arranged on the welding frame (31).

4. A new type of roller welding tool according to claim 3, characterized in that: The roller body support mechanism comprises a roller body support assembly (40) and two end support assemblies, wherein the roller body support assembly (40) is composed of a group of rollers with a lifting structure, which is arranged on the lower side of the roller (1) and is used to lift the roller (1), and the two end support assemblies are arranged at both ends of the roller (1) and on the rotating rod (213).

5. A new type of roller welding tool according to claim 4, characterized in that: The invention also comprises a circumferential seam welding mechanism, which comprises a moving assembly (50), a lifting frame (51), a suction cover (52), an adjustable welding assembly (53), a tray (54) and a rotating assembly (55), wherein the lifting frame (51) is fixed to the moving end of the moving assembly (50), the suction cover (52) is installed at the driving end of the lifting frame (51), the adjustable welding assembly (53) is arranged in conjunction with the suction cover (52), the rotating assembly (55) is arranged at the lower side of the lifting frame (51), and the tray (54) is arranged at one side of the rotating assembly (55).

6. A novel roller welding process, applicable to the novel roller welding tooling according to claim 5, characterized in that: The specific welding process is as follows: Step 1: feeding the material, moving the roller (1) to the roller body support assembly (40); Step 2: Positioning and locking, the driving module 1 (20) adjusts the position of the fixed frame assembly (22) and aligns it with the hollow part of the roller (1), and then the driving module 1 (20) pushes the fixed frame assembly (22) into the interior of the roller (1), and the electric push rod 1 (232) contracts and opens the hinged frame (222), and determines whether the locking is complete based on the data fed back by the pressure sensing module; Step 3: The welding mechanism is adjusted. After the welding frame (31) is erected above the roller (1), the fixing mechanism cooperates with the detection module (32) to detect and record the initial state of the surface of the roller (1), and the welding position of the welding module (33) is adjusted; Step 4: Preheating. According to the ambient temperature and the required preheating temperature range in combination with the welding standard, the temperature of the heat exchange airflow is adjusted to the required temperature range. The input pump inputs the airflow into the airbag (235). During this process, the output pump is in a closed state. The input stops when the internal pressure reaches a certain value. At this time, the airflow is in full contact with the fins (2361) and the heat is transferred to the roller (1) through the stop block (231). During this period, when the temperature detection module detects that the internal temperature drops to a certain value, the input pump and the output pump will replace the internal airflow so that the internal pressure is in a stable range to ensure stable heat exchange. Step 5: welding. After preheating is completed, the welding mechanism starts to start surfacing. The rotating assembly (21) drives the roller (1) to rotate at a constant speed at a certain speed. The fixing mechanism adjusts the position of the roller (1). During this period, one of the electric push rods (232) in the block (231) will push the slider (234) to extend to the unwelded part to preheat the unwelded part. The process is the same as step 4. The other electric push rod (232) moves the slider (234) to the corresponding position of the welding position to change the internal heat exchange air flow temperature. At this time, the heat exchange block (236) absorbs heat to prevent local high temperature at the welding position. Step 6: quality inspection: after welding is completed, the fixing mechanism controls the roller (1) to move and rotate, and the inspection module (32) performs a comprehensive inspection on the surface of the roller (1) to determine whether local repair welding is required; Step 7: Circumferential seam welding. After the roller body surfacing of the roller (1) is completed, the roller (1) is moved to a pallet (54) for cooling. The lifting frame (51) moves to the top of the roller (1), grabs it to the rotating assembly (55) and releases it. The adjustable welding assembly (53) welds the circular seam of the roller (1).

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