Weld seam roll welding system for metal plate machining

Abstract

The invention discloses a weld seam roll welding system for metal plate machining, and relates to the field of manufacturing of metal cutting and welding equipment such as plasma arc welding machines, the weld seam roll welding system comprises a base and roller electrodes symmetrically and rotatably arranged on the base, and further comprises a working ring and a mounting ring, the working ring and the mounting ring are respectively clamped at the two axial ends of the roller electrode, so that the working ring sleeves the outer side of the roller electrode, and the working ring and the mounting ring are fixed in an inserting manner. According to the weld seam roll welding system for metal plate machining, the working ring and the mounting ring are connected in an inserted mode so as to be clamped on the roller electrode, and the working ring is arranged on the outer side of the roller electrode in a sleeving mode so that the pressing ring part can be located on the radial outer side of the roller electrode to form a working face; and when the working surface on the pressing ring part is damaged and generates a pit during long-time welding operation, the working ring can be quickly replaced and maintained by disassembling the working ring and the mounting ring, so that the problem of low maintenance efficiency caused by the fact that the roller electrode of the traditional roll welding equipment needs to be integrally disassembled is solved.

Description

Technical Field

[0001] This invention relates to the field of manufacturing technology of metal cutting and welding equipment such as plasma arc welding machines, specifically a weld seam rolling welding system for metal plate processing. Background Technology

[0002] As is well known, in the manufacturing process of light poles, steel plates are rolled into cylinders using a plate rolling machine and then welded to form the light pole. For the manufacturing of large-diameter light poles, two steel plates need to be welded together before being rolled to meet the diameter requirements of the light pole. When welding two steel plates, a roll welding process is required. Roll welding uses roller electrodes to apply pressure to the workpiece and roll it to form a continuous weld, which can ensure the density and strength of the weld.

[0003] For example, the invention patent with application publication number CN103108719B, application publication date of December 2, 2015, and titled "Thinning Roll Welding Method and Apparatus," describes a thinning roll welding apparatus that includes two metal plates held by first and second gripping devices, causing the ends of the two metal plates to overlap. A pair of upper and lower electrode wheels apply pressure to the overlapped portion, and welding current is applied continuously to join the two metal plates. The apparatus includes: upper and lower pressure devices that apply pressure to the upper and lower electrode wheels respectively; and a control... The device, after the upper and lower pair of electrode wheels contact the joint end face of the overlapping part, feeds one of the upper and lower electrode wheels by position control and feeds the other electrode wheel by pressure control, thereby engaging the joint end face of the overlapping part. Then, both the upper and lower electrode wheels are switched to pressure control, and under this pressure control, the pressure applied to the upper and lower electrode wheels by the upper and lower pressure devices is controlled in such a way that the pressure applied to the upper and lower parts of the overlapping part is equal.

[0004] The shortcomings of the existing technology are that by rotating two electrode wheels to squeeze and move the material plate between the two electrode wheels and weld it synchronously, the working surface of the electrode wheels is prone to pits or scratches during long-term welding operations. This results in uneven weld indentations between the material rolls and a decrease in weld strength. It is necessary to completely disassemble and replace the electrode wheels to ensure the quality of the weld. However, the complete disassembly and replacement of the electrode wheels is cumbersome and laborious, resulting in low maintenance efficiency of the roll welding equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a weld seam rolling system for metal plate processing to overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a weld seam rolling system for metal plate processing, comprising a base and a roller electrode symmetrically rotated thereon, and further comprising a working ring and a mounting ring, wherein the working ring and the mounting ring are respectively clamped at both ends of the roller electrode so that the working ring is sleeved on the outside of the roller electrode, and the working ring and the mounting ring are inserted and fixed.

[0007] As a further description of the above technical solution: an embedded ring is fixedly provided on the working ring, and a fitting groove is provided on the mounting ring. The embedded ring is embedded in the fitting groove so that a buffer chamber is formed between the two.

[0008] As a further description of the above technical solution: the mounting ring has a circumferential array of ejection holes that communicate with the fitting groove, the outlet end of the ejection hole is inclined toward the outer periphery of the mounting ring, and a flexible strip that blocks the ejection hole in the default state is fixedly provided inside the mounting ring.

[0009] As a further description of the above technical solution: the mounting ring has an annular inner groove, and the working ring and the mounting ring are interlocked to move the inner groove into the sleeve groove facing the working ring.

[0010] As a further description of the above technical solution: a rubber ring is fixedly provided in the inner groove, and the rubber ring abuts against the inner wall of the sleeve groove.

[0011] As a further description of the above technical solution: it also includes a fixing ring on which a plurality of partial helical portions distributed along the helical direction are fixedly disposed, and the mounting ring is provided with a helical groove, and the fixing ring is fixedly installed on the inner ring side of the mounting ring through the partial helical portions and the helical groove.

[0012] As a further description of the above technical solution: the mounting ring has a connecting channel for connecting the helical groove and the inner groove.

[0013] As a further description of the above technical solution: a pressing part is fixedly provided on the fixing ring, and the pressing part presses the first end of the flexible strip onto the mounting ring.

[0014] As a further description of the above technical solution: it also includes a flexible ring plate fixedly connected to the end of the fixed ring, the flexible ring plate being moved to cover the helical groove and then inserted into the mounting ring.

[0015] As a further description of the above technical solution: the surface of the mounting ring is provided with a corrosion-resistant coating.

[0016] In the above technical solution, the present invention provides a metal plate welding seam roll welding system, which utilizes a working ring and a mounting ring to be interlocked and clamped onto a roller electrode. At this time, the working ring is sleeved on the outside of the roller electrode, so that the pressure ring part is located on the radial outside of the roller electrode to form a working surface. When the working surface on the pressure ring part is damaged and pits are generated during long-term welding operations, the working ring can be quickly replaced and maintained by disassembling the working ring and the mounting ring. This avoids the problem of low maintenance efficiency caused by the need to completely disassemble the roller electrode in traditional roll welding equipment, and improves the production efficiency of the roll welding equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure provided in an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the roller electrode, working ring, mounting ring, and fixing ring provided in an embodiment of the present invention.

[0021] Figure 4 An exploded view of the roller electrode, working ring, mounting ring, and fixing ring provided in an embodiment of the present invention;

[0022] Figure 5 This is an exploded structural diagram of the working ring and mounting ring provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the fixing ring provided in an embodiment of the present invention;

[0024] Figure 7 Provided for embodiments of the present invention Figure 3 Enlarged schematic diagram of the local structure at point A;

[0025] Figure 8 Provided for embodiments of the present invention Figure 3 Enlarged schematic diagram of the local structure at point B;

[0026] Figure 9 Provided for embodiments of the present invention Figure 4 Enlarged schematic diagram of the local structure at point C;

[0027] Figure 10Provided for embodiments of the present invention Figure 5 A magnified schematic diagram of the local structure at point D.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Base; 11. Material platform; 12. Control panel; 13. Cooling pipe; 2. Roller electrode; 21. Fitting ring; 3. Working ring; 31. Pressing ring; 32. Sleeve groove; 33. Embedding ring; 4. Mounting ring; 41. Fitting groove; 42. Spout; 43. Mounting groove; 44. Helical groove; 45. Inner groove; 46. Connecting channel; 47. Assembly groove; 5. Fixing ring; 51. Partial helical section; 52. Pressing section; 6. Flexible belt; 61. Through hole; 7. Rubber ring; 8. Flexible ring plate; 9. Conveying assembly; 91. Moving seat; 92. Conveying roller; 93. Drive cylinder. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Please see Figure 1-10 The present invention provides a technical solution: a weld seam rolling welding system for metal plate processing, including a base 1 and a roller electrode 2 symmetrically rotated on it, and also including a working ring 3 and a mounting ring 4. The working ring 3 and the mounting ring 4 are respectively clamped at both ends of the axial direction of the roller electrode 2 so that the working ring 3 is sleeved on the outside of the roller electrode 2, and the working ring 3 and the mounting ring 4 are inserted and fixed.

[0032] Preferred, such as Figure 1 As shown, a material platform 11 and a control panel 12 are provided on the base 1. The roller electrode 2 is vertically and symmetrically rotated on the base 1. A conveying assembly 9 is also horizontally and symmetrically arranged on the base 1. The conveying assembly 9 includes a set of vertically symmetrically arranged movable seats 91. Several conveying rollers 92 are rotatably arranged on the movable seats 91. A drive cylinder 93 is also provided on the base 1 to drive the two movable seats 91 to move relative to each other. The movable seats 91 move relative to each other and move closer together so that the conveying rollers 92 are clamped on the material plate. Two material plates can be clamped and conveyed by the two sets of conveying assemblies 9, and the ends of the two material plates extend into the space between the roller electrodes 2.

[0033] The outer side of the working ring 3 is provided with a pressure ring 31, which allows the working ring 3 and the mounting ring 4 to approach the roller electrode 2 from both axial sides of the roller electrode 2, and the working ring 3 and the mounting ring 4 to be inserted into each other to clamp onto the roller electrode 2. At this time, the working ring 3 is sleeved on the outer side of the roller electrode 2, and the pressure ring 31 is located on the radial outer side of the roller electrode 2 to form a working surface. When the working surface on the pressure ring 31 is damaged and pits are generated during long-term welding operations, the working ring 3 can be quickly replaced and maintained by disassembling the working ring 3 and the mounting ring 4. This avoids the problem of low maintenance efficiency caused by the need to completely disassemble the roller electrode 2 in traditional roller welding equipment, and improves the production efficiency of the roller welding equipment.

[0034] Secondly, a cooling pipe 13 is also provided on the base 1. The cooling pipe 13 is used to spray coolant onto the material plate to avoid local overheating of the material plate or working ring 3, which would cause the working surface of the working ring 3 or the material plate to bulge, thereby improving the quality of the welded product and the service life of the working ring 3. Both ends of the roller electrode 2 are fixedly provided with fitting rings 21. The mounting ring 4 has an assembly groove 47, and the working ring 3 has an annular groove. When the mounting ring 4 and the working ring 3 are clamped and installed on the roller electrode 2, the assembly groove 47 of the mounting ring 4 and the annular groove of the working ring 3 are inserted and sealed with the assembly groove 47. If coolant seeps into the contact surface between the working ring 3 and the roller electrode 2, it will cause uneven current distribution, resulting in fluctuations in welding quality and possible problems such as incomplete welding or spatter. By using the assembly groove 47 of the mounting ring 4 and the annular groove of the working ring 3 to fit into the assembly groove 47, the intrusion of coolant into the gap between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3 is reduced. This improves the welding quality and also prevents coolant from accumulating between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3 to form a heat insulation layer. This avoids the problem of poor heat dissipation of the roller electrode 2, local temperature rise, and increased risk of adhesion.

[0035] The material of the working ring 3 can be selected according to the material of the material plate to be welded. When installing the working ring 3 made of chromium zirconium copper with high wear resistance and explosion resistance, the working ring 3 can be installed on the side of the roller electrode 2 near the rotating shaft, while the mounting ring 4 is installed on the side opposite to the rotating shaft of the roller electrode 2. The working ring 3 can be removed from the outer ring side of the roller electrode 2 but not completely removed from the base 1. Simple grinding and maintenance of the high wear resistance working ring 3 can be performed to improve the service life of the working ring 3.

[0036] When using an alumina copper working ring 3 for roll welding, the working ring 3 is resistant to adhesion to galvanized or aluminum plates. However, this type of working ring 3 has a relatively short service life. Therefore, the mounting ring 4 can be installed near the roller electrode 2 on the side closest to the rotating shaft, while the working ring 3 is installed on the side facing away from the rotating shaft of the roller electrode 2. This avoids the need for complete removal and replacement of the working ring 3 from the roller electrode 2.

[0037] The conveying component 9, control panel 12, and cooling pipe 13 are common technical knowledge to those skilled in the art and will not be described in detail here.

[0038] In the above technical solution, the working ring 3 and the mounting ring 4 are interlocked to clamp onto the roller electrode 2. At this time, the working ring 3 is sleeved on the outside of the roller electrode 2, so that the pressure ring part 31 is located on the radial outside of the roller electrode 2 to form a working surface. When the working surface on the pressure ring part 31 is damaged and pits are generated during long-term welding operations, the working ring 3 can be quickly replaced and maintained by disassembling the working ring 3 and the mounting ring 4. This avoids the problem of low maintenance efficiency caused by the need to completely disassemble the roller electrode 2 in traditional roller welding equipment, and improves the production efficiency of the roller welding equipment.

[0039] In another embodiment of the present invention, an embedded ring 33 is fixedly provided on the working ring 3, and a fitting groove 41 is provided on the mounting ring 4. The embedded ring 33 is embedded in the fitting groove 41 so that a buffer chamber is formed between the two.

[0040] Preferred, such as Figure 3 As shown, when the working ring 3 is fitted onto the roller electrode 2 and inserted into the mounting ring 4, the insert ring 33 of the working ring 3 is embedded in the fitting groove 41 for fixation and limitation. When the mounting ring 4 and the working ring 3 are fully inserted and assembled, a cavity exists between the insert ring 33 and the fitting groove 41 to form a buffer chamber. This buffer chamber is located on the axial side of the pressure ring 31. Because there is a gap on the outer ring side of the mounting ring 4 and the working ring 3 when they are assembled, some coolant inevitably enters into this gap due to vaporization pressure and capillary action. The existence of the buffer chamber can store the coolant that has entered into the gap between the mounting ring 4 and the insert ring 33, thereby reducing the uneven current distribution and local overheating caused by coolant intrusion between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3, further improving the stability of current and heat transfer between the working ring 3 and the roller electrode 2. The insert ring 33 is inserted into the fitting groove 41 to further improve the fixation stability between the working ring 3 and the mounting ring 4.

[0041] The working ring 3 and the mounting ring 4 can be further fixedly connected by bolts, thereby improving the installation stability between the working ring 3 and the mounting ring 4 and the roller electrode 2.

[0042] In another embodiment of the present invention, the mounting ring 4 is provided with a circumferential array of ejection holes 42 that communicate with the fitting groove 41. The outlet end of the ejection hole 42 is inclined toward the outer periphery of the mounting ring 4. A flexible strip 6 is fixedly provided inside the mounting ring 4 to block the ejection hole 42 in the default state.

[0043] Preferred, such as Figure 7As shown, a flexible belt 6 is fixedly installed inside the mounting ring 4. The flexible belt 6 has a through hole 61. In its default state, the through hole 61 is misaligned with the ejector hole 42, thus sealing the buffer chamber. As coolant enters the buffer chamber, the roller electrode 2 rolls to perform roll welding on the material plate. Under the high temperature generated during welding, the coolant in the buffer chamber easily absorbs heat and vaporizes, increasing the air pressure inside the buffer chamber. Driven by the air pressure, the flexible belt 6 deforms and elongates, causing the through hole 61 to move and connect with the ejector hole 42. At this time, the vaporized coolant in the buffer chamber can be sprayed onto the material roll along the ejector hole 42, allowing the vaporized coolant airflow to impact and clean the material roll, improving the cleanliness of the surface of the material roll to be welded and thus improving the welding quality. Secondly, the temperature of the vaporized coolant is still lower than the temperature at the welded joint of the coil. Therefore, the vaporized coolant airflow can still cool the coil to avoid the problem of local overheating and bulging.

[0044] In another embodiment of the present invention, the mounting ring 4 has an annular inner groove 45, and the working ring 3 and the mounting ring 4 are interlocked to move the inner groove 45 into the sleeve groove 32 facing the working ring 3.

[0045] Preferred, such as Figure 8 As shown, an inner groove 45 is provided on the mounting ring 4. When the working ring 3 is sleeved on the outer circumference of the roller electrode 2 for insertion and fixation with the mounting ring 4, the inner groove 45 on the mounting ring 4 faces the inner wall of the sleeve groove 32 of the working ring 3, thereby facilitating the axial assembly and close proximity between the mounting ring 4 and the working ring 3. Furthermore, when the working ring 3 and the mounting ring 4 are clamped on the roller electrode 2, the inner groove 45 is located between the buffer chamber and the outer ring surface of the roller electrode 2. This allows the inner groove 45 to serve as a secondary storage chamber for the intruding coolant, further preventing uneven current distribution and local overheating caused by the intrusion of coolant between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3, thus improving the quality of the welded products formed by the roller welding equipment.

[0046] In another embodiment of the present invention, a rubber ring 7 is fixedly disposed in the inner groove 45, and the rubber ring 7 abuts against the inner wall of the sleeve groove 32.

[0047] Preferred, such as Figure 8As shown, the rubber ring 7 is annularly fixed within the inner groove 45. When the working ring 3 is sleeved on the outer circumference of the roller electrode 2 and inserted and fixed with the mounting ring 4, the inner groove 45 on the mounting ring 4 faces the inner wall of the sleeve groove 32 of the working ring 3. This causes the rubber ring 7 to abut against the inner wall of the sleeve groove 32 to form an annular seal, thereby further sealing the outer annular surface of the roller electrode 2 and the inner annular surface of the working ring 3. This prevents coolant from entering between the outer annular surface of the roller electrode 2 and the inner annular surface of the working ring 3, thus avoiding problems such as uneven current distribution, welding quality fluctuations, and poor heat dissipation caused by coolant intrusion between the outer annular surface of the roller electrode 2 and the inner annular surface of the working ring 3.

[0048] In another embodiment of the present invention, a fixing ring 5 is further provided thereon with a plurality of partial helical portions 51 distributed along the helical direction. The mounting ring 4 is provided with a helical groove 44. The fixing ring 5 is fixedly installed on the inner ring side of the mounting ring 4 through the partial helical portions 51 and the helical groove 44.

[0049] Preferably, a mounting groove 43 is provided on the mounting ring 4, and a helical groove 44 is provided on the inner wall of the mounting groove 43, such as... Figure 6 As shown, the retaining ring 5 has several helical portions 51. These helical portions 51 and the helical groove 44 allow the retaining ring 5 to be fixedly installed into the mounting groove 43. At this time, the retaining ring 5 is located inside the mounting ring 4 to improve the compressive strength of the mounting ring 4. When the roller electrode 2 rotates to compress the welding plate with the pressure ring portion 31 of the working ring 3, the working ring 3 applies a deformation pressure in the axial direction to the outer edge of the mounting ring 4. If the compressive strength of the mounting ring 4 is weak, the gap between the working ring 3 and the mounting ring 4 can easily increase, allowing more coolant to enter and causing overheating. The presence of the retaining ring 5 improves the compressive strength of the mounting ring 4, thereby further improving the installation stability of the mounting ring 4 and reducing the intrusion of coolant between the working ring 3 and the mounting ring 4.

[0050] Secondly, some of the spiral portions 51 on the mounting ring 4 are spirally distributed. When all of the spiral portions 51 rotate into the spiral groove 44, several cavities will be distributed along the spiral in the spiral groove 44. During the splashing process, the coolant can easily penetrate along the inner wall of the spiral groove 44 and enter the cavities in the spiral groove 44. During the roll welding operation, the mounting ring 4 will also be heated by the high temperature of welding, which will heat the coolant in the cavities in the spiral groove 44, so that the coolant can vaporize in the cavities in the spiral groove 44 to increase the fastening pressure, thereby further fixing the stability between the ring 5 and the mounting ring 4 and the compressive strength of the mounting ring 4.

[0051] In another embodiment of the present invention, a connecting channel 46 is provided in the mounting ring 4 for connecting the helical groove 44 and the inner groove 45.

[0052] Preferred, such as Figure 8As shown, the two ends of the rubber ring 7 are fixedly connected to the two side walls of the inner groove 45 to separate the inner groove 45. The two ends of the connecting channel 46 are connected to the helical groove 44 and the inner groove 45 respectively. When the fixing ring 5 is rotated and installed into the mounting ring 4 through the partial helical part 51 and the helical groove 44, the partial helical part 51 rotates to force the air in the helical groove 44 into the inner groove 45 through the connecting channel 46. This causes the pressure in the inner groove 45 near the connecting channel 46 to rise. Driven by the air pressure inside the inner groove 45, the rubber ring 7 deforms and adheres tightly to the inner wall of the sleeve groove 32 of the working ring 3. This further deforms the rubber ring 7 to improve the sealing between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3, thus further improving the sealing effect between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3.

[0053] When the working ring 3 and the mounting ring 4 are installed onto the roller electrode 2, the inner wall of the sleeve groove 32 of the working ring 3 needs to be in close contact with the outer ring surface of the roller electrode 2. Therefore, the working ring 3 and the outer ring surface of the roller electrode 2 need to be interference-fitted. The working ring 3 and the mounting ring 4 also need to be axially inserted interference-fitted to improve the fixing stability of the working ring 3 and the mounting ring 4. However, the inner wall of the sleeve groove 32 of the working ring 3 cannot be lubricated with oil. Otherwise, the oil will form a heat insulation layer between the working ring 3 and the roller electrode 2 and affect the current distribution. Therefore, the disassembly of the interference fit between the working ring 3 and the roller electrode 2 is still quite difficult.

[0054] When the working ring 3 needs to be disassembled and maintained, the heating during the welding of the roller electrode 2 causes the buffer chamber in the mounting ring 4 to contain vaporized coolant. At this time, the fixing ring 5 can be rotated to remove the fixing ring 5 from the mounting groove 43. At this time, the air pressure in the inner groove 45 decreases instantaneously, causing the rubber ring 7 to deform away from the inner wall of the sleeve groove 32 of the working ring 3, thus reducing the contact area between the rubber ring 7 and the inner wall of the sleeve groove 32. Due to the decrease in air pressure in the inner groove 45, the coolant vapor in the buffer chamber can easily cross the surface of the rubber ring 7 along the gap between the mounting ring 4 and the working ring 3 and rush into the space between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3. This causes the coolant vapor to liquefy at the gap between the surface of the rubber ring 7 and the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3, forming a coolant film gas-liquid mixture layer between the surface of the rubber ring 7 and the outer ring surface of the roller electrode 2. This results in hydrodynamic lubrication on the surface of the rubber ring 7, facilitating the disassembly of the working ring 3 from the mounting ring 4 and the roller electrode 2. This improves the disassembly efficiency of the working ring 3, making it easier to maintain the working ring 3.

[0055] The hydrodynamic lubrication phenomenon refers to the formation of a gas-liquid mixed film between the mounting ring 4, the roller electrode 2, and the rubber ring 7, which causes a sudden drop in friction, thus facilitating the disassembly of the working ring 3. Since the surfaces of the working ring 3 and the roller electrode 2 will be contaminated with coolant after disassembly, the working ring 3 and the roller electrode 2 need to be cleaned immediately after disassembly.

[0056] In another embodiment of the present invention, a pressing part 52 is fixedly provided on the fixing ring 5, and the pressing part 52 presses the first end of the flexible strip 6 onto the mounting ring 4.

[0057] Preferred, such as Figure 8 As shown, the end of the flexible band 6 closest to the axial direction of the mounting ring 4 is the first end, and the end of the flexible band 6 closest to the outer periphery of the mounting ring 4 is the second end. The second end of the flexible band 6 is fixedly connected to the mounting ring 4. When the fixing ring 5 is installed onto the mounting ring 4 through the partial helical part 51 and the helical groove 44, the pressing part 52 of the fixing ring 5 presses the first end of the flexible band 6 onto the mounting ring 4 to complete the fixing of the flexible band 6.

[0058] When the working ring 3 needs to be disassembled for maintenance, the fixing ring 5 can be rotated to remove it from the mounting groove 43. At this time, the air pressure in the inner groove 45 decreases instantly, causing the rubber ring 7 to deform away from the inner wall of the mounting groove 32 of the working ring 3. The coolant vapor in the buffer chamber can easily pass through the gap between the mounting ring 4 and the working ring 3, and rush into the space between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3. This forms a coolant film gas-liquid mixture layer between the surface of the rubber ring 7 and the outer ring surface of the roller electrode 2. Subsequently, the clamping part 52 no longer clamps the flexible band 6 on the mounting ring 4, allowing the flexible band 6 to relax and deform so that the buffer chamber can be connected to the outside through the through hole 61. This reduces the sealing of the gap between the working ring 3, the roller electrode 2, and the mounting ring 4 when the working ring 3 is disassembled, reducing the disassembly resistance of the working ring 3 caused by capillary action and further improving the disassembly efficiency of the working ring 3 from the roller electrode 2.

[0059] In another embodiment of the present invention, a flexible ring plate 8 is fixedly connected to the end of the fixed ring 5, and the flexible ring plate 8 is inserted into the mounting ring 4 after moving the shielding helical groove 44.

[0060] Preferred, such as Figure 8As shown, the flexible ring plate 8 is fixedly connected to the end of the fixed ring 5. When the fixed ring 5 is rotated and installed into the mounting ring 4 through the partial helical part 51 and the helical groove 44, the flexible ring plate 8 moves with the fixed ring 5 to move and cover the helical groove 44, thereby preventing debris or debris from entering the helical groove 44 and causing difficulties in installing and removing the fixed ring 5. When the fixed ring 5 is gradually rotated and installed into the mounting groove 43 of the mounting ring 4, the flexible ring plate 8 rotates and moves to be inserted into the mounting ring 4 to provide a seal to the end of the helical groove 44, thereby facilitating the partial helical part 51 to press the gas in the helical groove 44 into the inner groove 45 through the connecting channel 46, improving the deformation stability of the rubber ring 7.

[0061] In another embodiment of the present invention, the surface of the mounting ring 4 is provided with a corrosion-resistant coating.

[0062] Preferably, the surface of the mounting ring 4 is provided with a corrosion-resistant coating to improve the corrosion resistance and service life of the mounting ring 4.

[0063] Working principle:

[0064] When the working ring 3 needs to be installed, the working ring 3 and the mounting ring 4 can be brought close to the roller electrode 2 from both axial sides of the roller electrode 2, and the working ring 3 and the mounting ring 4 can be inserted into each other to clamp onto the roller electrode 2. At this time, the working ring 3 is sleeved on the outside of the roller electrode 2, so that the pressure ring part 31 is located on the radial outside of the roller electrode 2 to form a working surface. There is a cavity between the embedded ring 33 and the fitting groove 41 to form a buffer chamber. Then, the fixing ring 5 is fixedly installed into the mounting groove 43 through the partial helical part 51 and the helical groove 44. At this time, the fixing ring 5 is located on the inside of the mounting ring 4 to improve the compressive strength of the mounting ring 4.

[0065] During the roll welding operation, after the coolant enters the buffer chamber, the roller electrode 2 rolls to perform the roll welding operation on the material plate. Under the high temperature generated by the welding, the coolant in the buffer chamber easily absorbs heat and vaporizes, thereby increasing the air pressure in the buffer chamber. The flexible strip 6 is deformed and elongated by the air pressure, causing the through hole 61 of the flexible strip 6 to move to connect with the spray hole 42. At this time, the vaporized coolant in the buffer chamber can be sprayed onto the material roll along the spray hole 42.

[0066] When the working ring 3 needs to be removed, the fixing ring 5 can be rotated to remove it from the mounting groove 43. At this time, the air pressure in the inner groove 45 decreases instantly, causing the rubber ring 7 to deform away from the inner wall of the mounting groove 32 of the working ring 3. The coolant vapor in the buffer chamber can easily pass through the gap between the mounting ring 4 and the working ring 3, and rush into the space between the outer ring surface of the roller electrode 2 and the inner ring surface of the working ring 3. This causes a coolant film gas-liquid mixture layer to be formed between the surface of the rubber ring 7 and the outer ring surface of the roller electrode 2. Subsequently, the pressing part 52 no longer presses the flexible band 6 on the mounting ring 4, allowing the flexible band 6 to relax and deform so that the buffer chamber can be connected to the outside through the through hole 61. This reduces the disassembly resistance of the working ring 3 caused by capillary action when the working ring 3 is disassembled.

[0067] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A weld seam rolling system for metal plate processing, comprising a base (1) and roller electrodes (2) symmetrically rotatably disposed thereon, characterized in that, It also includes a working ring (3) and a mounting ring (4), wherein the working ring (3) and the mounting ring (4) are respectively clamped at both ends of the roller electrode (2) so that the working ring (3) is sleeved on the outside of the roller electrode (2), and the working ring (3) and the mounting ring (4) are inserted and fixed.

2. The weld seam rolling welding system for metal plate processing according to claim 1, characterized in that, An embedded ring (33) is fixedly provided on the working ring (3), and a fitting groove (41) is provided on the mounting ring (4). The embedded ring (33) is embedded in the fitting groove (41) so that a buffer chamber is formed between the two.

3. The weld seam rolling welding system for metal plate processing according to claim 2, characterized in that, The mounting ring (4) has a circumferential array of ejection holes (42) that communicate with the fitting groove (41). The outlet end of the ejection hole (42) is inclined toward the outer periphery of the mounting ring (4). A flexible strip (6) is fixedly installed inside the mounting ring (4) to block the ejection hole (42) in the default state.

4. The weld seam rolling welding system for metal plate processing according to claim 1, characterized in that, The mounting ring (4) has an annular inner groove (45), and the working ring (3) and the mounting ring (4) are interlocked to allow the inner groove (45) to move into the sleeve groove (32) facing the working ring (3).

5. A weld seam rolling welding system for metal plate processing according to claim 4, characterized in that, A rubber ring (7) is fixedly installed inside the inner groove (45), and the rubber ring (7) abuts against the inner wall of the sleeve groove (32).

6. A weld seam rolling welding system for metal plate processing according to claim 5, characterized in that, It also includes a fixing ring (5) on which several partial spiral portions (51) distributed along the spiral direction are fixedly disposed. The mounting ring (4) has a spiral groove (44) and the fixing ring (5) is fixedly installed on the inner ring side of the mounting ring (4) through the partial spiral portions (51) and the spiral groove (44).

7. A weld seam rolling system for metal plate processing according to claim 6, characterized in that, The mounting ring (4) has a connecting channel (46) for connecting the helical groove (44) and the inner groove (45).

8. A weld seam rolling system for metal plate processing according to claim 7, characterized in that, A pressing part (52) is fixedly provided on the fixing ring (5), and the pressing part (52) presses the first end of the flexible strip (6) onto the mounting ring (4).

9. A weld seam rolling welding system for metal plate processing according to claim 6, characterized in that, It also includes a flexible ring plate (8) fixedly connected to the end of the fixed ring (5), which is inserted into the mounting ring (4) after moving to cover the helical groove (44).

10. A weld seam rolling welding system for metal plate processing according to claim 1, characterized in that, The surface of the mounting ring (4) is provided with a corrosion-resistant coating.

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