Welding device and roller workpiece

Abstract

The invention provides a welding device and a roller workpiece, the welding device is used for welding a plurality of stud pieces to a roller at a preset circumferential interval angle, the welding device comprises a supporting frame, the supporting frame is used for supporting the roller and allowing the roller to rotate around the axis of the roller, the welding device further comprises a circumferential adjusting mechanism, and the circumferential adjusting mechanism is used for adjusting the circumferential direction of the roller. The circumferential adjustment mechanism includes a chuck and an index plate which are concentric, the chuck is fixed to the support frame, the index plate can be fixed to the roller so that the roller can rotate integrally with the index plate, and thus the circumferential angle of the roller can be defined by rotating the index plate by a predetermined angle, the index plate is configured in a disc shape, and the index plate is configured to rotate by a predetermined angle. A plurality of tooth grooves which are evenly spaced are formed in the outer periphery of the index plate, a plurality of positioning grooves are formed in the outer periphery of the chuck, and the interval angle between every two adjacent positioning grooves is not equal to the interval angle between every two adjacent tooth grooves. According to the welding device disclosed by the invention, more efficient and higher-quality welding can be provided, so that a roller workpiece with higher quality is provided.

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202511979687.2 (22) Application Date 2025.12.25 (71) Applicant: Xinbeierkangpu (Qingdao) Machinery Equipment Co., Ltd. Address: No. 5, Minshan Road, Huangdao District, Qingdao City, Shandong Province, 266426 (72) Inventors: Ding Shaofan, Cong Ming (74) Patent Agency: Beijing Jijia Intellectual Property Agency Co., Ltd. 11227 Patent Attorney: Yuan Yuan (51) Int.Cl. B23K 37 / 00 (2025.01) (54) Invention Title: Welding Device and Roller Workpiece (57) Abstract: This invention provides a welding device and a roller workpiece. The welding device is used to weld multiple studs to a roller at a predetermined circumferential interval angle. The welding device includes a support frame for supporting the roller and allowing the roller to rotate about the axis of the roller. The welding apparatus further includes a circumferential adjustment mechanism, which comprises a concentric chuck and an indexing plate. The chuck is fixed to a support frame, and the indexing plate is fixed to the roller, allowing the roller to rotate integrally with the indexing plate. This allows the circumferential angle of the roller to be limited by rotating the indexing plate by a predetermined angle. The indexing plate is disc-shaped, with a plurality of evenly spaced toothed grooves formed on its outer periphery. The chuck has a plurality of positioning grooves on its outer periphery, and the angle between adjacent positioning grooves is not equal to the angle between adjacent toothed grooves. The welding apparatus according to the present invention can provide more efficient and higher-quality welding, thereby providing higher-quality roller workpieces. Claims 2 pages, Description 7 pages, Drawings 5 ​​pages, CN 121696604 A 2026.03.20 CN 1 21 69 66 04 A 1. A welding apparatus (100) for welding a plurality of stud members (94) to a roller (90) at predetermined circumferential intervals, the welding apparatus comprising a support frame (10) for supporting the roller and allowing the roller to rotate about its axis, characterized in that the welding apparatus further comprises a circumferential adjustment mechanism (PA) comprising a concentric chuck (60) and an indexing plate (70), the chuck being fixed to the support frame, the indexing plate being fixed to the roller so that the roller can rotate integrally with the indexing plate, thereby limiting the circumferential angle of the roller by rotating the indexing plate by a predetermined angle, the indexing plate being configured as a disc, the outer periphery of the indexing plate having a plurality of evenly spaced toothed grooves (72). The outer periphery of the chuck is formed with a plurality of positioning grooves, and the spacing angle between adjacent positioning grooves is not equal to the spacing angle between adjacent tooth grooves.2. The welding apparatus (100) according to claim 1, characterized in that the positioning groove is constructed comprising n positioning grooves arranged sequentially along the circumferential direction of the chuck, wherein n is an odd number and n is greater than or equal to 3; and the interval angle between adjacent positioning grooves is equal. 3. The welding apparatus (100) according to claim 1, characterized in that the positioning groove is constructed comprising n positioning grooves arranged sequentially along the circumferential direction of the chuck, wherein n is an odd number and n is greater than or equal to 3; and the positioning grooves are arranged symmetrically about the center line (P) of the (n+1) / 2th positioning groove. 4. The welding apparatus (100) according to claim 3, characterized in that, when n is greater than or equal to 5, in the positioning groove, the difference between the interval angle between adjacent positioning grooves closer to the center line and the interval angle between adjacent tooth grooves is greater than or equal to the difference between the interval angle between adjacent positioning grooves farther from the center line and the interval angle between adjacent tooth grooves. 5. The welding apparatus (100) according to claim 3, characterized in that, during the initial welding, one groove of the indexing plate is aligned with the (n+1) / 2th positioning groove of the chuck. 6. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that the interval angle α between adjacent positioning grooves is calculated by the following formula: where θ represents the interval angle between adjacent grooves of the indexing plate, in degrees; l represents the deviation of the welding position of the stud member in the circumferential direction during the welding of the stud member to the roller, this deviation being an empirical value; r represents the radius of the chuck, the unit of l being the same as the unit of r. 7. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that the circumferential adjustment mechanism further includes a fixing block (80), the fixing block being simultaneously installed in one groove of the groove and one positioning groove of the positioning groove, thereby fixing the indexing plate and the chuck. 8. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that each of the toothed grooves has the same width in the circumferential direction of the indexing plate, each of the positioning grooves has the same width in the circumferential direction of the chuck, and the width of the toothed groove in the circumferential direction of the indexing plate is equal to the width of the positioning groove in the circumferential direction of the chuck. 9. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that the predetermined circumferential spacing angle is an integer multiple of the spacing angle between adjacent toothed grooves. 10. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that the indexing plate can...The chuck is detachably fixed to the roller and the indexing plate is detachably fixed to the support frame, such that the chuck and the indexing plate are replaceable. 11. A roller workpiece, the roller workpiece comprising a roller and studs welded to the outer peripheral surface of the roller, characterized in that the studs are welded to the roller by a welding apparatus according to any one of claims 1 to 10. Claims 2 / 2 Page 3 CN 121696604 A Welding apparatus and roller workpiece technical field

[0001] The present invention relates to a welding apparatus, and more particularly to a welding apparatus including a circumferential adjustment mechanism for defining the circumferential angle of a roller. Background Art

[0002] This section provides background information related to the present invention, which does not necessarily constitute prior art.

[0003] Rollers with studs are common workpieces in sheet metal production lines, for example, for conveying and loosening raw materials such as wood chips. The circumferential surface of this roller is provided with a large number of studs spaced at certain circumferential intervals and axial intervals. Each stud extends radially from the outer circumferential surface of the roller toward a direction away from the roller. The studs are usually fixed to the roller by welding.

[0004] Currently, in order to achieve welding of the studs to the roller, a welding device including a support for supporting the roller can be used. In this welding device, the roller is supported on the support, and the welding operation is performed by manually rotating the roller or moving the welding gun. In this welding device, due to manufacturing and assembly tolerances and operational errors, problems may occur during the welding process, such as a deviation between the actual circumferential interval angle of the studs and the desired circumferential interval angle.

[0005] Based on this, the present invention aims to provide a welding device that can ensure the desired circumferential position of the studs welded to the outer circumferential surface of the roller, thereby improving the welding quality and welding efficiency and thus ensuring the quality of the roller workpiece.

[0006] One object of the present invention is to provide a welding apparatus including a circumferential adjustment mechanism, which corrects circumferential deviation by cooperating with an indexing plate and a chuck, thereby accurately positioning the stud member to be welded to the roller relative to the roller's circumferential position, ensuring that the stud member is welded to the roller at a predetermined circumferential interval angle, and improving welding quality.

[0007] Another object of the present invention is to provide a welding apparatus including a circumferential adjustment mechanism, which not only ensures the welding quality of the stud member welded to the roller, but also has a simple and efficient welding process.

[0008] Another object of the present invention is to provide a high-quality roller workpiece manufactured by a welding apparatus including a circumferential adjustment mechanism, in which the stud member can be welded to the outer circumferential surface of the roller at a desired circumferential interval angle.

[0009] The present invention provides a welding apparatus for welding multiple stud members at a predetermined circumferential interval angle.The roller is welded to the roller. The welding device includes a support frame for supporting the roller and allowing the roller to rotate around its axis. The welding device also includes a circumferential adjustment mechanism, which includes a concentric chuck and an indexing plate. The chuck is fixed to the support frame, and the indexing plate is fixed to the roller so that the roller can rotate integrally with the indexing plate. Thus, the circumferential angle of the roller can be limited by rotating the indexing plate by a predetermined angle. The indexing plate is constructed in a disc shape, and a plurality of evenly spaced toothed grooves are formed on the outer periphery of the indexing plate. A plurality of positioning grooves are formed on the outer periphery of the chuck, and the interval angle between adjacent positioning grooves is not equal to the interval angle between adjacent toothed grooves.

[0010] Optionally, the positioning grooves are constructed to include n positioning grooves arranged sequentially along the circumferential direction of the chuck, where n is an odd number and n is greater than or equal to 3; and the interval angle between adjacent positioning grooves is equal.

[0011] Optionally, the positioning slot is constructed to include n positioning slots arranged sequentially along the circumferential direction of the chuck, where n is an odd number and n is greater than or equal to 3; and the positioning slots are arranged symmetrically about the center line of the (n+1) / 2th positioning slot. Specification 1 / 7 page 4 CN 121696604 A

[0012] Optionally, when n is greater than or equal to 5, in the positioning slot, the difference between the interval angle between adjacent positioning slots closer to the center line and the interval angle between adjacent tooth slots is greater than or equal to the difference between the interval angle between adjacent positioning slots farther from the center line and the interval angle between adjacent tooth slots.

[0013] Optionally, during the initial welding, one tooth slot of the indexing plate is aligned with the (n+1) / 2th positioning slot of the chuck.

[0014] Optionally, the interval angle α between adjacent positioning slots is calculated using the following formula:

[0015]

[0016] Wherein, θ represents the interval angle between adjacent tooth grooves of the indexing plate, and its unit is degrees;

[0017] l represents the deviation of the welding position of the stud member in the circumferential direction during the welding of the stud member to the roller, and this deviation is an empirical value;

[0018] r represents the radius of the chuck, and the unit of l is the same as the unit of r.

[0019] Optionally, the circumferential adjustment mechanism further includes a fixing block, which can be simultaneously installed in one tooth groove of the tooth groove and one positioning groove of the positioning groove, thereby fixing the indexing plate and the chuck.

[0020] Optionally, each tooth groove has the same width in the circumferential direction of the indexing plate, each positioning groove has the same width in the circumferential direction of the chuck, and the width of the tooth groove in the circumferential direction of the indexing plate is equal to the width of the positioning groove in the circumferential direction of the chuck.

[0021] Optionally, the predetermined circumferential interval angle is an integer multiple of the interval angle between adjacent tooth grooves.

[0022] Optionally, the indexing plate is detachably fixed to the roller and the chuck is detachably fixed to the support frame, such that the chuck and indexing plate are replaceable.

[0023] According to another aspect of the invention, the invention also provides a roller workpiece comprising a roller and stud members welded to the outer peripheral surface of the roller, wherein the stud members are welded to the roller by a welding apparatus according to the above description.

[0024] In general, the welding apparatus according to the invention, due to the provision of a circumferential adjustment mechanism that corrects circumferential deviations through the cooperation of an indexing plate and a chuck, not only can it ensure that the stud members are welded to the roller at a predetermined circumferential interval angle, but the welding process is also of high quality and high efficiency, thereby enabling the reliable and efficient manufacture of high-quality roller workpieces. Brief Description of the Drawings

[0025] The features and advantages of one or more embodiments of the invention will become more readily understood from the following description with reference to the accompanying drawings. The drawings provided herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. The drawings are not drawn to scale, but some features may be enlarged or reduced to show details of specific parts. In the accompanying drawings:

[0026] FIG1 is a perspective view of a welding apparatus according to the present invention;

[0027] FIG2 is a front view of a welding apparatus according to the present invention;

[0028] FIG3 is a detailed enlarged view of the circumferential adjustment mechanism of the welding apparatus in FIG1;

[0029] FIG4 is a side view of the chuck of the welding apparatus according to the present invention;

[0030] FIG5 is a side view of the indexing plate of the welding apparatus according to the present invention;

[0031] FIG6 and FIG7 respectively show partial side views of the indexing plate and the fixing block of the welding apparatus according to the present invention in the state without the circumferential adjustment step and in the state after the circumferential adjustment step during the welding process; and Specification 2 / 7 page 5 CN 121696604 A

[0032] FIG8 and FIG9 respectively show partial side views of the chuck and the fixing block of the welding apparatus according to the present invention in the state without the circumferential adjustment step and in the state after the circumferential adjustment step during the welding process. Detailed Description

[0033] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. This description is merely exemplary and does not constitute a limitation on the present invention and its application.

[0034] Figures 1 and 2 show a welding apparatus 100 according to the invention, in which a roller 90 is arranged at a welding station. As shown in Figure 1, the roller 90 includes a first shaft head 91 and a second shaft head 92 located at two ends in its axial direction, and a cylindrical body portion 93 located between the first shaft head 91 and the second shaft head 92. The welding apparatus 100 is used to weld stud members 94 to the roller 90, particularly the body portion 93 of the roller 90, at predetermined circumferential interval angles and / or predetermined axial interval distances. Figure 1 shows the state of the roller 90 after welding is substantially completed, with the stud members 94 uniformly arranged on the roller 90 at predetermined circumferential interval angles and predetermined axial interval distances, and the stud members 94 substantially along the roller 90.The radial direction extends away from the outer peripheral surface of the roller 90.

[0035] As shown in Figures 1 and 2, the welding apparatus 100 includes a support frame 10 for supporting the roller 90 and allowing the roller 90 to rotate about its own axis. Specifically, the support frame 10 may include a base 12 and a pair of first uprights 14 and a pair of second uprights 16 mounted on the base 10. The pair of first uprights 14 are used to support the roller 90 and the circumferential adjustment mechanism PA, which will be described below. The pair of second uprights 16 are used to support the axial adjustment mechanism DA and the welding torch assembly WG, which will be described below.

[0036] The welding apparatus 100 includes an axial adjustment mechanism DA and a welding torch assembly WG, the axial adjustment mechanism DA being used to adjust the axial position of the welding torch assembly WG relative to the roller 90. The axial adjustment mechanism DA includes a comb-like member 50 and a guide rod 40, the comb-like member 50 and the guide rod 40 being arranged parallel to the axis of the roller 90 supported by the support frame 10. The welding torch assembly WG is arranged perpendicular to the comb-like member 50 and the guide rod 40. The comb-like member 50 includes a plurality of evenly spaced comb grooves 51. The plurality of comb grooves 51 are arranged side by side between two ends of the comb-like member 50. Preferably, each comb groove 51 is configured to open upward to facilitate a portion of the welding torch assembly WG engaging into and disengaging from the comb groove 51. The predetermined axial spacing of the stud members 94 on the roller 90 is an integer multiple of the spacing between adjacent comb grooves 51 of the comb-like member 50, for example preferably one, two, or three times. Here, it should be noted that the spacing between adjacent comb grooves 51 of the comb-like member 50 refers to the distance between a virtual line perpendicular to the longitudinal extension direction of the comb-like member 50 (or the axial direction of the roller 90 already mounted on the welding device) and passing through the center of a comb groove 51, and a virtual line perpendicular to the longitudinal extension direction of the comb-like member 50 and passing through the center of the comb groove 51 adjacent to that comb groove 51.

[0037] The welding torch assembly WG includes a positioning member 20 and a welding torch 30 mounted on the positioning member 20. The positioning member 20 includes a first end 22 and a second end 24 opposite to each other. The first end 22 is configured, for example, as a sleeve portion that fits onto the guide rod 40, thereby allowing the welding torch assembly to slide (shown in FIG. 2 as sliding in the left-right direction) along the guide rod 40 (or along the axial direction of the sleeve) and rotate about the guide rod 40 (or about the axis of the sleeve portion). The second end 24 of the positioning member 20 is configured, for example, as a plate portion that can be inserted into and fixed in a tooth groove 51 of the comb-like member 50, thereby fixing the positioning member 20 to the comb-like member 50 for welding. For welding, the stud member 94 can be held in the head of the welding torch 30, and the head of the welding torch 30 can be brought close to the roller 90 to perform welding. After the current welding is performed, the positioning member 20 can be...The second end 24 of the positioning member 20 is removed from the current comb tooth groove 51 of the comb-like member 50 (e.g., the second end 24 is lifted upwards, causing the welding torch assembly WG to rotate about the guide rod 40 (with the first end 22 as the hinge point)), the first end 22 of the positioning member 20 is translated on the guide rod 40, and then the second end 24 of the positioning member 20 is re-engaged into the next comb tooth groove 51 of the comb-like member 50, and then the next welding is performed. In addition, the welding torch assembly WG also includes a welding torch fine-tuning mechanism 31 consisting of a torch holder 32 and an adjusting bolt 33, for adjusting the position (particularly the position of the welding torch in a vertical plane passing through the axis of the roller) and posture (i.e., the angle between the axis of the welding torch and this plane) of the welding torch 30 to ensure that the stud members 94 are welded to the roller 90 at predetermined axial intervals and in a vertical manner.

[0038] The welding apparatus 100 further includes a circumferential adjustment mechanism PA, which is used to adjust the circumferential position of the welding torch 30 of the welding torch assembly WG relative to the roller 90. Specifically, the circumferential adjustment mechanism PA includes a chuck 60 and an indexing plate 70. The chuck 60 can be fixed to the support frame 10, and the indexing plate 70 can be fixed to the roller 90 (for example, the indexing plate 70 and the roller 90 can be detachably fixed to each other through a convex-concave fit), so that the indexing plate 70 can rotate with the rotation of the roller 90 (i.e., the roller 90 can rotate integrally with the indexing plate 70). Thus, the circumferential angle of the roller 90 can be limited by rotating the indexing plate 70 by a predetermined angle. It should be noted here that the "circumferential angle of the roller 90" specifically refers to the angle by which the roller is rotated during the welding process to align the position to be welded on the roller 90 with the welding torch.

[0039] Specifically, referring to FIG. 5, the indexing plate 70 can be constructed in a disc shape, with a central through hole 71 formed at its center for one shaft head of the roller 90 to pass through, and a plurality of evenly spaced toothed grooves 72 formed on its outer periphery. In other words, the interval angle θ between any two adjacent toothed grooves 72 of the indexing plate 70 is equal. Specifically, referring to FIG. 4, the chuck 60 can be constructed in a disc shape, with a central through hole 61 formed at its center for one shaft head of the roller 90 to pass through. The chuck 60 is fixed on the support frame 10 such that its central through hole 61 is aligned with the groove 142 of the first stand 14. A plurality of positioning grooves 62 are formed on the outer periphery of the chuck 60.

[0040] Before placing the roller 90 to be welded onto the welding apparatus 100, one end of the roller 90 (e.g., the second end 92 shown in Figures 1 and 2) can first pass through the central through-hole 71 of the indexing plate 70 and fix the indexing plate 70 to the roller 90. Then, the end is passed through the central through-hole 61 of the chuck 60 and placed into the groove 142 of the first stand 14, and the other end (the first end 91) is placed into the groove 142 of the first stand 14 on the opposite side, thereby enabling the roller 90 to...It is arranged in the welding station of the welding device 90. Thus, the chuck 60 and the indexing plate 70 are arranged concentrically, and the axis of the roller 90 passes through the center of the chuck 60 and the indexing plate 70.

[0041] In addition, referring to FIG3, the circumferential adjustment device PA also includes a fixing block 80. When performing welding, the fixing block 80 can be simultaneously installed in a tooth groove 72 of the indexing plate 70 and a positioning groove 62 of the chuck 60, thereby fixing the indexing plate 70 to the chuck 60. In this case, the roller 90, which is fixedly connected to the indexing plate 70, is also fixed relative to the chuck 60 and the first stand 14 and can no longer rotate, thereby facilitating the performance of welding. When it is necessary to rotate the roller 90 to adjust the circumferential angle of the roller 90 (in other words, when it is necessary to adjust the position of the roller 90 on the circumferential surface aligned with the welding gun 30 (the position to be welded)), the fixing block 80 can be removed from the current toothed groove 72 of the indexing plate 70, or the fixing block 80 can be removed from both the current toothed groove 72 of the indexing plate 70 and the current positioning groove 62 of the chuck 60, thereby allowing the rotation of the indexing plate 70 and the roller 90.

[0042] Preferably, each toothed groove 72 has the same width (i.e., groove width) in the circumferential direction of the indexing plate 70, each positioning groove 62 has the same width (i.e., groove width) in the circumferential direction of the chuck 60, and the groove width of the toothed groove 70 is equal to the groove width of the positioning groove 62, so as to facilitate the manufacture and installation of the fixing block 80, and also to ensure that no relative movement occurs between the indexing plate 70 and the chuck 60 when the indexing plate 70 and the chuck 60 are stably connected and fixed by the fixing block 80.

[0043] Specifically, the predetermined circumferential interval angle β between adjacent stud members 94 to be welded to the roller 90 is an integer multiple of the interval angle θ (see FIG. 5) between adjacent tooth grooves 72 of the indexing plate 70. For example, it is one, two, or three times the interval angle θ. The predetermined circumferential interval angle β being one time the interval angle θ between adjacent tooth grooves 72 of the indexing plate 70 means that the predetermined circumferential interval angle β is equal to the interval angle θ between adjacent tooth grooves 72 of the indexing plate 70. Thus, the circumferential angle of the roller 90 can be defined by rotating the indexing plate 70 by a predetermined angle. Here, it should be noted that, referring to FIG. 5, the interval angle θ between adjacent tooth grooves 72 of the indexing plate 70 refers to the angle between a first virtual line r1 passing through the center of the indexing plate 70 and the center of a tooth groove 72, and a second virtual line r2 passing through the center of the indexing plate 70 and the center of a tooth groove 72 adjacent to that tooth groove 72. Instruction manual, pages 4 / 7, CN 121696604 A

[0044] Preferably, the chuck 60, indexing plate 70, and comb-like member 50 are replaceable to meet the needs of rollers 90 and stud members 94 of different specifications. In particular, the indexing plate 70 can be configured according to the predetermined dimensions of the stud members 94 to be welded to the roller 90.The circumferential interval angle is used for selection and replacement. In some embodiments, the chuck 60 can be detachably fixed to the first stand 14 of the support frame by a suitable structure (e.g., a concave-convex structure).

[0045] In particular, in this invention, the interval angle α between adjacent positioning grooves 62 of the chuck 60 is not equal to the interval angle θ between adjacent tooth grooves 72 of the indexing plate 70. Thus, the cooperation between the chuck 60 and the indexing plate 70 can compensate for the tolerance in the circumferential direction that occurs during the welding of the stud member 94 to the roller 90, or in other words, can correct the deviation in the circumferential direction of the welding position of the stud member 94 to the roller 90. Here, it should be noted that the circumferential deviation of the welding position from the stud 94 to the roller 90 refers to the possible circumferential deviation between the position aligned with the welding torch 30 on the circumferential surface of the roller 90 and the actual desired welding position during the rotation of the roller 90 to perform welding. Specifically, it manifests as the arc length between the position aligned with the welding torch 30 on the circumferential surface of the roller 90 and the actual desired welding position. Furthermore, referring to Figure 4, the spacing angle α between adjacent positioning slots 62 of the chuck 60 refers to the angle between a virtual line passing through the center of the chuck 60 and the center of one positioning slot 62 (e.g., the first positioning slot 621) and a virtual line passing through the center of the chuck 60 and the center of an adjacent positioning slot 62 (e.g., the second positioning slot 622). For example, referring to Figure 4, each of the spacing angles between any two adjacent positioning slots 62 of the chuck 60 is not equal to the spacing angle θ between adjacent tooth grooves 72.

[0046] In order to accurately correct the circumferential deviation of the welding position of the stud 94 to the roller 90, the interval angle α between adjacent positioning grooves 62 of the chuck 60 is designed based on the interval angle θ between adjacent tooth grooves 72 of the indexing plate 70 (or the predetermined circumferential interval angle of the stud 94 distributed on the roller 90), the deviation to be adjusted, and the radius of the chuck 60. Preferably, the interval angle α between adjacent positioning grooves 62 of the chuck 60 can be calculated by the following formula:

[0047] Wherein, θ represents the interval angle between adjacent tooth grooves 72 of the indexing plate 70, and its unit is degrees; l represents the circumferential deviation of the welding position of the stud 94 during the welding of the stud 94 to the roller 90, which is an empirical value; r represents the radius of the chuck 60, and the unit of l is the same as the unit of r, for example, millimeters.

[0048] Preferably, the plurality of positioning grooves 62 are evenly spaced along the circumferential direction of the chuck 60, thereby facilitating the correction of circumferential deviations that increase linearly with the rotation of the roller 90. In other words, the positioning grooves 62 of the chuck 60 are configured to include n positioning grooves arranged sequentially along the circumferential direction of the chuck 60, wherein n is an odd number and n is greater than or equal to 3, and adjacent positioning grooves 62 are spaced apart.The interval angles between the chuck and the indexing plate are all equal. For example, referring to Figure 4, the positioning groove 62 is constructed to include seven positioning grooves arranged sequentially along the circumferential direction of the chuck 60, and the interval angles between adjacent positioning grooves 62 are all equal.

[0049] Preferably, the plurality of positioning grooves 62 are constructed to include n positioning grooves arranged sequentially along the circumferential direction of the chuck 60, where n is an odd number and greater than or equal to 5, and the plurality of positioning grooves 62 are arranged symmetrically about the center line of the (n+1) / 2th positioning groove. Thus, regardless of whether the roller 90 and the indexing plate 70 rotate clockwise or counterclockwise, the positioning grooves 62 of the chuck 60 can cooperate with the indexing plate 70 to compensate for circumferential deviations. For example, referring to Figure 4, the positioning groove 62 is constructed as seven, including a first positioning groove 621, a second positioning groove 622, a third positioning groove 623, a fourth positioning groove 624, a fifth positioning groove 625, a sixth positioning groove 626, and a seventh positioning groove 627. The first to seventh positioning grooves are arranged symmetrically about the center line P of the fourth positioning groove. In other words, the interval angle between the first positioning groove 621 and the second positioning groove 622 is equal to the interval angle between the sixth positioning groove 626 and the seventh positioning groove 627, the interval angle between the second positioning groove 622 and the third positioning groove 623 is equal to the interval angle between the fifth positioning groove 625 and the sixth positioning groove 626, and the interval angle between the third positioning groove 623 and the fourth positioning groove 624 is equal to the interval angle between the fourth positioning groove 624 and the fifth positioning groove 625.

[0050] Preferably, during the initial welding, one tooth 72 of the indexing plate 70 is aligned with the (n+1) / 2th positioning groove of the chuck 60 (shown as the fourth positioning groove 624 in FIG. 4) to allow the fixing block 80 to be inserted into both the tooth 72 and the fourth positioning groove 624 simultaneously. This allows the welding apparatus 100 to rotate the roller 90 and the indexing plate 70 in both clockwise and counterclockwise directions and to adjust for possible circumferential deviations to the maximum extent.

[0051] Those skilled in the art will understand that the circumferential deviation between the position of the roller 90 aligned with the welding torch 30 and the actual desired welding position does not necessarily increase linearly with the rotation of the roller 90. In particular, the inventors have found in practice that the rate of increase of this circumferential deviation tends to be large at first and then small. Based on this, in order to more accurately compensate for this circumferential deviation, preferably, the spacing angle between adjacent positioning grooves 62 may be unequal. More preferably, when n is greater than or equal to 5, the difference between the spacing angle between adjacent positioning slots 62 closer to the center line P and the spacing angle between adjacent tooth grooves 72 is greater than or equal to the difference between the spacing angle between adjacent positioning slots further away from the center line P and the spacing angle between adjacent tooth grooves. For example, referring to FIG4, the third positioning slot closer to the center line P...The difference between the angle between the second positioning groove 622 and the third positioning groove 623 and the angle θ between the adjacent tooth grooves 72 is greater than or equal to the angle between the second positioning groove 622 and the third positioning groove 623, which is farther from the center line P, and the angle θ between the adjacent tooth grooves 72 (i.e., the difference between the angle between the second positioning groove 622 and the third positioning groove 623, which is closer to the center line P, and the angle θ between the adjacent tooth grooves 72 is greater than or equal to the angle between the first positioning groove 621 and the second positioning groove 622, which is farther from the center line P, and the angle θ between the adjacent tooth grooves 72. The difference between the angle between the fifth positioning groove 625 and the fourth positioning groove 624, which is closer to the center line P, and the angle between the adjacent tooth groove 72 is greater than or equal to the difference between the angle between the sixth positioning groove 626 and the fifth positioning groove 625, which is farther from the center line P, and the angle between the adjacent tooth groove 72 is greater than or equal to the difference between the angle between the sixth positioning groove 626 and the fifth positioning groove 625, which is closer to the center line P, and the angle between the adjacent tooth groove 72 is greater than or equal to the difference between the angle between the seventh positioning groove 627 and the sixth positioning groove 626, which is farther from ... seventh positioning groove 627 and the sixth positioning groove 626.

[0052] As a first preferred example, referring to Figures 4 and 5, assuming that the interval angle θ between adjacent tooth grooves 72 of the indexing plate 70 and the predetermined circumferential interval angle of the stud members 94 arranged on the roller 90 are both 10°, and the circumferential deviation of the welding positions of the stud members 94 sequentially welded to the roller 90 along the circumferential direction of the roller 90 increases non-linearly, for example, the circumferential deviation of the welding position of the first stud member 94 is 0mm, and the circumferential deviations of the welding positions of the second, third, and fourth stud members 94 are 0.6mm, 0.9mm, and 1.2mm, respectively, then the interval angle between the fourth positioning groove 624 (the fourth positioning groove 624 is the positioning groove into which the fixing block 80 is inserted when the first stud member is welded) and the adjacent third positioning groove 623 and fifth positioning groove 625, All are designed to be 9.8°. The spacing angle between the third positioning groove 623 and the adjacent second positioning groove 622, and the spacing angle between the fifth positioning groove 625 and the adjacent sixth positioning groove 626 are all designed to be 9.9°. The spacing angle between the second positioning groove 622 and the adjacent first positioning groove 621, and the spacing angle between the sixth positioning groove 626 and the adjacent seventh positioning groove 627 are all designed to be 9.9°. Alternatively, the spacing angles can also be designed to be 10.1°, 10.1°, 10.2°, 10.2°, 10.1°, and 10.1°, respectively.

[0053] As a second preferred example, referring to Figures 4 and 5, it is assumed that the spacing angle θ between adjacent tooth grooves 72 of the indexing plate 70 andThe predetermined circumferential interval angle of the stud members 94 arranged on the roller 90 is 10°, and the circumferential deviation of the welding position of the stud members 94 welded to the roller 90 along the circumferential direction of the roller 90 increases linearly. For example, the circumferential deviation of the welding position of the first stud member 94 is 0 mm, and the circumferential deviations of the welding positions of the second, third, and fourth stud members 94 are 0.3 mm, 0.6 mm, and 0.9 mm, respectively. Then the interval angle can be designed to be all 9.9° or all 10.1°.

[0054] The operation process of the circumferential adjustment mechanism PA of the welding device 100 and the welding process will be described below with reference to the first preferred example and with reference to Figures 6 to 9, especially the process of the circumferential adjustment mechanism PA compensating for the circumferential deviation.

[0055] During the welding process using the welding apparatus 100, referring to Figures 6 and 8, the roller 90 with the indexing plate 70 is first placed in the welding station of the welding apparatus 100. Then, the fixing block 80 is inserted into a toothed groove 72 of the indexing plate 70 (e.g., the first toothed groove 721 shown in Figure 6) and a positioning groove 62 of the chuck 60 (shown as the fourth positioning groove 624 in Figure 8). After the welding gun assembly WG is fixed in place, the first welding can be performed.

[0056] Subsequently, the fixing block 80 is removed from the current first toothed groove 724 of the indexing plate 70, and the roller 90 and the indexing plate 70 are rotated so that the next toothed groove 72 (e.g., the second toothed groove 722 adjacent to the first toothed groove 721 shown in Figure 6) is aligned with the fourth positioning groove 624 of the chuck 60 (i.e., the roller 90 and the indexing plate 70 are rotated 10° clockwise in Figures 6 and 7). At this time, check whether there is a circumferential deviation between the position aligned with the welding gun assembly WG on the outer circumferential surface of the roller 90 and the desired welding position of the stud. For example, the circumferential surface of the roller has markings for the predetermined welding position (e.g., markings presented by scribing or drawing lines). By comparing the actual aligned position of the welding gun 30 on the circumferential surface of the roller with the markings on the circumferential surface of the roller, such as by visual inspection or inspection instruments, it can be confirmed whether such a circumferential deviation exists. If no circumferential deviation occurs, the fixing block 80 is inserted into the second tooth groove 722 and held in the fourth positioning groove 624 or re-inserted into the fourth positioning groove 624, and then the next welding is performed. If a circumferential deviation occurs, a circumferential adjustment step is performed.

[0057] Referring to Figures 7 and 9, for example, if a circumferential deviation is found when aligning the fourth tooth groove 724 with the fourth positioning groove 624 of the chuck 60, a circumferential adjustment step is performed. In the circumferential adjustment step, the fixing block 80 is removed from the fourth positioning groove 624 of the chuck 60, and the indexing plate 70 is rotated slightly counterclockwise so that the fixing block 80 is inserted into the fifth tooth groove 725 of the indexing plate 70.The next welding is performed in the fifth positioning groove 625 of the chuck 60. Since the interval angle between the fourth tooth groove 724 and the fifth tooth groove 725 of the indexing plate 70 is 10°, and the interval angle between the fourth positioning groove 624 and the fifth positioning groove 625 of the chuck 60 is 9.8°, it is equivalent to that when performing this welding, the roller 90 and the indexing plate 70 are adjusted from rotating 10° clockwise to rotating only 9.8°, thereby correcting the deviation (i.e., 0.6 mm) of the welding position in the circumferential direction of the roller 90.

[0058] Subsequently, the above welding process is repeated until all the welding points in the entire circumferential direction of the roller 90 are welded with stud members 94.

[0059] Those skilled in the art will understand that when multiple stud members 94 are welded to the roller 90 using the welding device 100 according to the present invention, the welding position of the stud members 94 on the roller 90 can be positioned more efficiently, especially in the circumferential direction of the roller 90. For example, compared with related solutions that involve manually marking positioning lines or points and then manually holding the welding torch for welding, the welding apparatus 100 according to the present invention, having a circumferential adjustment mechanism and an axial adjustment mechanism, can quickly and accurately position the stud member to the welding position on the roller, thereby avoiding operational errors and improving welding efficiency. Furthermore, through the cooperation of the chuck 60 and the indexing plate 70 of the circumferential adjustment mechanism PA, circumferential deviations occurring during welding can be adjusted in real time, further improving welding quality. The final product manufactured by this welding apparatus 100, including the roller 90 and the stud member 94 welded to the outer circumferential surface of the roller 90, has extremely high quality.

[0060] The welding apparatus according to a preferred embodiment of the present invention has been described above in conjunction with specific embodiments. It is understood that the above description is merely exemplary and not restrictive, and various variations and modifications can be conceived by those skilled in the art with reference to the above description without departing from the scope of the invention. These variations and modifications are also included within the scope of protection of the present invention. Instruction manual, page 7 / 7, 10 CN 121696604 A, Figure 1, Figure 2; Instruction manual, Figure 1 / 5, page 11 CN 121696604 A, Figure 3; Instruction manual, Figure 2 / 5, page 12 CN 121696604 A, Figure 4; Instruction manual, Figure 3 / 5, page 13 CN 121696604 A, Figure 5, Figure 6; Instruction manual, Figure 4 / 5, page 14 CN 121696604 A, Figure 7, Figure 8, Figure 9; Instruction manual, Figure 5 / 5, page 15 CN 121696604 A, Abstract: The present application provides a welding device and a roller workpiece.welding device is configured for welding multiple studs to a roller at a predetermined circumferential angular spacing. The welding device includes a support frame, which is configured to support the roller and allow the roller to rotate about its axis. The welding device further includes a circumferential adjustment mechanism, which has a locking disc and an indexing plate arranged concentrically. The locking disc is fixed to the support frame. The indexing plate may be fixed to the roller such that the roller is rotatable together with the indexing plate, thereby enabling a circumferential angle of the roller to be limited by rotating the indexing plate over a predetermined angle. The indexing plate is configured in a disc shape, and its outer periphery is formed with multiple uniformly-spaced tooth grooves. An outer periphery of the locking disc is formed with multiple positioning grooves, and an angular spacing between the adjacent positioning grooves is not identical to an angularspacing between the adjacent tooth grooves. The welding device according to the present application enables more efficient and higher-quality welding, thereby producing a higher-quality roller workpiece.

Claims

1. A welding apparatus (100) for welding a plurality of stud members (94) to a roller (90) at predetermined circumferential intervals, the welding apparatus comprising a support frame (10) for supporting the roller and allowing the roller to rotate about its axis. Its features are, The welding apparatus further includes a circumferential adjustment mechanism (PA), which comprises a concentric chuck (60) and an indexing plate (70). The chuck is fixed to the support frame, and the indexing plate is fixed to the roller so that the roller can rotate integrally with the indexing plate. This allows the circumferential angle of the roller to be limited by rotating the indexing plate by a predetermined angle. The indexing plate is constructed in a disc shape, and its outer periphery has a plurality of evenly spaced toothed grooves (72). The outer periphery of the chuck has a plurality of positioning grooves. The angle between adjacent positioning slots is not equal to the angle between adjacent tooth slots.

2. The welding apparatus (100) according to claim 1, characterized in that, The positioning groove is constructed to include n positioning grooves arranged sequentially along the circumferential direction of the chuck, where n is an odd number and n is greater than or equal to 3; and the interval angle between adjacent positioning grooves is equal.

3. The welding apparatus (100) according to claim 1, characterized in that, The positioning groove is constructed by including n positioning grooves arranged sequentially along the circumferential direction of the chuck, wherein n is an odd number and n is greater than or equal to 3; and The positioning slots are arranged symmetrically about the center line (P) of the (n+1) / 2th positioning slot.

4. The welding apparatus (100) according to claim 3, characterized in that, When n is greater than or equal to 5, in the positioning groove, the difference between the interval angle between adjacent positioning grooves closer to the center line and the interval angle between adjacent tooth grooves is greater than or equal to the difference between the interval angle between adjacent positioning grooves farther from the center line and the interval angle between adjacent tooth grooves.

5. The welding apparatus (100) according to claim 3, characterized in that, During the initial welding, one tooth of the indexing plate is aligned with the (n+1) / 2th positioning slot of the chuck.

6. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that, The spacing angle α between adjacent positioning slots is calculated using the following formula: Wherein, θ represents the interval angle between adjacent grooves of the indexing plate, and its unit is degrees; l represents the deviation of the welding position of the stud in the circumferential direction during the process of welding the stud to the roller, and this deviation is an empirical value; r represents the radius of the chuck, and the unit of l is the same as the unit of r.

7. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that, The circumferential adjustment mechanism further includes a fixing block (80), which can be installed simultaneously in one of the tooth grooves and one of the positioning grooves, thereby fixing the indexing plate and the chuck.

8. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that, Each of the toothed grooves has the same width in the circumferential direction of the indexing plate, and each of the positioning grooves has the same width in the circumferential direction of the chuck. The width of the tooth groove in the circumferential direction of the indexing plate is equal to the width of the positioning groove in the circumferential direction of the chuck.

9. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that, The predetermined circumferential spacing angle is an integer multiple of the spacing angle between adjacent tooth grooves.

10. The welding apparatus (100) according to any one of claims 1 to 5, characterized in that, The indexing plate is detachably fixed to the roller and the chuck is detachably fixed to the support frame, such that the chuck and the indexing plate are replaceable.

11. A roller workpiece, the roller workpiece comprising a roller and stud members welded to the outer peripheral surface of the roller, characterized in that, The stud is welded to the roller by a welding device according to any one of claims 1 to 10.

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