Foreign matter scraping device for rotating structure and welding system

Abstract

The utility model provides a foreign matter scraping device for a rotating structure and a welding system. The foreign matter scraping device comprises a mounting seat and a sliding rod, at least one guide structure is fixed on the mounting seat; the guide structure is used for limiting the sliding rod in the circumferential direction, so that the advancing direction of the sliding rod is parallel to the first direction, and the first direction is the extending direction of the sliding rod; the guide structure is in clearance fit with the sliding rod; one end of the sliding rod is provided with a scraping piece in contact with the side wall of the rotating structure; the sliding rod is sleeved with a nut. An external thread matched with the nut is arranged on the sliding rod; the length of the external thread in the first direction is greater than that of the nut in the first direction; a spring is arranged between the nut and the guide structure facing the nut and arranged on the outer side of the sliding rod in a sleeving mode, one end of the spring is installed on the nut, and the other end of the spring is installed on the guide structure facing the nut. The nut and the spring are both located between the guide structure facing the nut and the scraping piece.

Description

Technical Field

[0001] The utility model belongs to the field of steel strip and band saw blade processing equipment, in particular to a foreign matter scraping device and a welding system for a rotating structure, and relates to welding slag cleaning during band saw blade processing. Background Art

[0002] The saw blade manufacturing process involves laser welding two different steel strips (wire and strip) together. The wire and strip are then joined together to create the saw blade. The tip of the saw blade is formed from the wire, providing the hardness needed to cut through objects, while the back of the saw blade is formed from the strip, providing the flexibility to rotate the tip. Laser welding is a high-energy, Gaussian process. When laser welding two dissimilar materials, it produces large sparks and molten particles (commonly known as welding slag or spatter).

[0003] In steel strip and wire welding systems, the thickness of the joined strips and wires is typically only 0.65-1.6mm. Therefore, during laser welding, a fixture and positioning wheel are essential to ensure that the wire and strip are aligned. Otherwise, the laser will not reach the joint surface between the two materials, resulting in a weak weld and potentially causing saw blade failure (tooth loss). The positioning wheel is designed to be tangential to the wire and rotates as the wire advances to avoid scratching the wire's sidewalls. The positioning wheel is typically positioned no more than 1.5mm from the laser weld point and must rotate continuously and steadily to ensure smooth wire movement. Welding slag and spatter from laser welding easily adhere to the positioning wheel, affecting its smooth rotation. When spatter adheres to the positioning wheel, the weld between the wire and strip can develop quality issues such as bulging, intermittent widening and narrowing, and incomplete welds.

[0004] In order to reduce the negative impact of slag splashes adhering to the positioning wheel, the existing technology generally adopts the following methods: regularly applying high-temperature resistant vacuum silicone grease on the positioning wheel to reduce the adhesion of welding slag, or manually scraping the positioning wheel with a scraper every half an hour.

[0005] However, both the application of vacuum silicone grease and manual scraping require regular personnel participation, which is inefficient, labor-intensive, and prone to omissions and forgetfulness. Furthermore, vacuum silicone grease has the following problems: (1) it is difficult to apply evenly, and if applied too much, it will fall onto the steel wire, directly affecting the welding quality; (2) it causes the steel wire to slide up and down, resulting in a deviation in the welding position and affecting the weld quality; and (3) it produces smoke and dust that contaminates the laser welding head. Utility Model Content

[0006] The problem to be solved by the utility model is that in the existing steel strip and steel wire welding system, the method of applying vacuum silicone grease and manually scraping to remove welding slag is low in efficiency and labor-intensive, and a foreign matter scraping device for a rotating structure is provided.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a foreign matter scraping device for a rotating structure, comprising a mounting seat (16) and a sliding rod (122);

[0008] At least one guide structure is fixed on the mounting seat (16); the guide structure is used to limit the sliding rod (122) in the circumferential direction, and is used to limit the sliding rod (122) in the circumferential direction, so that the moving direction of the sliding rod (122) is parallel to the first direction, and the first direction is the extension direction of the sliding rod (122); the guide structure and the sliding rod (122) are clearance-fitted;

[0009] A scraper (11) is mounted on one end of the sliding rod (122) for contacting the side wall of the rotating structure;

[0010] The sliding rod (122) is sleeved with a nut (14); the sliding rod (122) is provided with an external thread (12A) that matches the nut (14); the length of the external thread (12A) in the first direction is greater than the length of the nut (14) in the first direction;

[0011] A spring (15) is provided between the nut (14) and the guide structure toward the nut (14), and the spring (15) is sleeved on the outside of the sliding rod (122). One end of the spring (15) abuts against the nut (14), and the other end of the spring (15) abuts against the guide structure toward the nut (14);

[0012] The nut (14) and the spring (15) are both located between the guide structure facing the nut (14) and the scraper (11).

[0013] Through the above-mentioned arrangement, the sliding rod is limited in the circumferential direction, so that the sliding rod can only move forward and backward relative to the guide mechanism (i.e., move forward and backward along the first direction). By setting the external thread, the nut and the corresponding length, the position of the nut in the length direction of the external thread (i.e., the first direction) can be adjusted. When the nut is not rotated, the nut, the sliding rod, and the connecting piece form an integrated structure that moves together. When the nut is rotated, so that the distance between the nut and the guide structure toward the nut is reduced, the spring is compressed, and the spring generates a reaction elastic force to the nut, so that the nut has a tendency to move away from the guide structure, thereby driving the sliding rod in the integrated structure to move in the same direction as the nut, or have a tendency to move in the same direction, so that the scraper can apply a greater abutment force to the outer wall of the rotating structure. When the nut rotates, increasing the distance between the nut and the guide structure toward the nut, the spring is stretched, generating a counteracting pulling force against the nut, causing the nut to tend toward the guide structure. This in turn drives the sliding rod in the integrated structure to move in the same direction as the nut, or to tend to move in the same direction, allowing the scraper to exert a smaller abutting force on the outer wall of the rotating structure, or to move away from the outer wall of the rotating structure. This arrangement can adjust the amount of force applied by the scraper to the outer wall of the rotating structure. Furthermore, when the outer wall of the rotating structure is adhered to relatively hard welding slag, making it impossible for the scraper to remove it all at once, the slag abuts against the scraper, causing it to move away from the rotating structure, thereby compressing the spring. The retractable spring also avoids the prior art phenomenon of the scraper and the rotating structure becoming stuck when the scraper is unable to remove the relatively hard welding slag and is unable to retract, thereby preventing excessive interference with the rotation of the rotating structure.

[0014] Furthermore, the guide structure includes a fixing seat (17) fixed to the mounting seat (16), and the fixing seat (17) is provided with first through holes (171) respectively corresponding to the sliding rods (122); the axis direction of the first through holes (171) is parallel to the first direction.

[0015] With the above arrangement, the circumferential direction of the sliding rod can be limited by the first through holes, so that the sliding rod can only move forward and backward.

[0016] In a preferred embodiment, at least two guide structures are arranged at intervals along the first direction.

[0017] By the above arrangement, the guide structure is used to limit the sliding rod in the circumferential direction. At least two guide structures are arranged at intervals along the first direction, so that the limiting effect on the sliding rod is higher and the sliding rod moves more smoothly in the first direction.

[0018] In a preferred embodiment, a first guide sleeve (181) is provided on at least one side of the first through hole (171), and the first guide sleeve (181) is provided on the fixing seat (17).

[0019] By providing the first guide sleeve, the limiting effect on the sliding rod is enhanced.

[0020] Furthermore, in the guide structure toward the nut (14), the fixing seat (17) includes a detachably connected base inner guide sleeve (183) and a fixing seat base (17A);

[0021] The fixed seat base (17A) is fixed to the mounting seat (16) and is sleeved on the outside of the inner guide sleeve (183) of the base; the inner guide sleeve (183) of the base is used to install the other end of the spring (15) and is sleeved on the outside of the sliding rod (122); the inner side of the inner guide sleeve (183) of the base is provided with the first through hole (171);

[0022] When the base inner guide sleeve (183) and the fixed seat base (17A) are in a connected state, the base inner guide sleeve (183) and the fixed seat base (17A) are fixed to each other;

[0023] When the base inner guide sleeve (183) and the fixed seat base (17A) are in an unconnected state, the base inner guide sleeve (183) can move relative to the fixed seat base (17A) in a direction away from the nut (14).

[0024] Through the above arrangement, when the scraper needs to be replaced, there is no need to remove the fixed seat. It is only necessary to make the inner guide sleeve of the base and the fixed seat base unconnected, and the inner guide sleeve of the base can be moved relative to the fixed seat base in the direction away from the nut, so that the spring length is extended, thereby causing the sliding rod to move together in the direction away from the rotating mechanism, leaving space between the scraper and the rotating mechanism, making it easier to replace the scraper.

[0025] In a preferred embodiment, the base inner guide sleeve (183) forms a protruding structure on the fixed seat base (17A) facing the nut (14).

[0026] Through the above arrangement, when the inner guide sleeve of the base and the fixed base are in an unconnected state, the raised inner guide sleeve of the base can be pushed away from the nut, so that the nut can move accordingly, and the overall structure of the nut and the sliding rod can move away from the rotating structure.

[0027] In a preferred embodiment, the inner guide sleeve (183) of the base includes a first end portion (1831), a connecting portion (1833), and a second end portion (1832) connected in sequence; the outer circumference of the first end portion (1831) and the outer circumference of the second end portion (1832) are both larger than the outer circumference of the connecting portion (1833), so that the inner guide sleeve (183) of the base forms an I-shaped structure as a whole; a base through hole (173) is provided on the fixed base (17A), and the base through hole (173) includes a mutually connected paving groove (1731) and a guide sleeve matching section (1732), and the guide sleeve matching section (1732) is located at the paving groove (1731) away from the nut ( 14) one side; the size of the relief groove (1731) is adapted to the outer circumferential size of the first end portion (1831), and the size of the guide sleeve fitting section (1732) is adapted to the size of the connecting portion (1833); the outer circumferential size of the first end portion (1831) and the outer circumferential size of the second end portion (1832) are both larger than the size of the guide sleeve fitting section (1732), and the length of the connecting portion (1833) in the first direction is larger than the length of the guide sleeve fitting section (1732) in the first direction; when the guide sleeve (183) inside the base is fixedly connected to the fixed seat base (17A) through the guide sleeve fastener (17B), the second end portion (1832) contacts the fixed seat base (17A).

[0028] With the above arrangement, when the scraper needs to be replaced, after removing the guide sleeve fixing member, the inner guide sleeve of the base can be moved relative to the fixing base in a direction away from the nut. Moreover, the inner guide sleeve of the base is prevented from being completely separated from the fixing base by the limiting effect of the wall surface of the clearance groove. In addition, after the scraper is replaced, the inner guide sleeve of the base is moved to a position where the second end portion contacts the fixing base. The guide sleeve fastener can then be used to securely connect the inner guide sleeve of the base to the fixing base, thereby avoiding the problem that the inner guide sleeve of the base and the fixing base are difficult to move back to the fixed position after moving relative to each other.

[0029] Furthermore, the scraper (11) is detachably connected to the sliding rod (122); the scraper (11) has K scraping segments, and the scraper (11) has K installation positions corresponding to the K scraping segments, where K is greater than or equal to 2;

[0030] When the scraper (11) is located at any j-th installation position among the K installation positions, the j-th scraper segment corresponding to the j-th installation position faces the side wall of the rotating structure, 1≤j≤K.

[0031] With the above arrangement, when one scraping segment of the scraper is too worn to be used, the installation position of the scraper can be adjusted and the other scraping segment of the scraper can be used to remove the welding slag on the surface of the rotating structure.

[0032] Preferably, the scraper is a polyhedron structure having at least four surfaces, and the scraping segments are edges in the polyhedron structure.

[0033] Preferably, when any one scraping segment of the scraper (11) contacts the side wall of the rotating structure, the range of the angle of contact between the scraper (11) and the rotating structure is [15°, 75°].

[0034] More preferably, the range of the angle of contact between the scraper (11) and the rotating structure is:

[0035] By setting the angle range to [40°, 50°], the scraper section can better scrape the welding slag on the side wall of the rotating structure. The applicant has found that setting the angle range to [40°, 50°] can better scrape the welding slag on the side wall of the rotating structure.

[0036] More preferably, when an edge of the scraper (11) contacts the side wall of the rotating structure, the facing angle between the scraper (11) and the rotating structure is defined as: the angle between the surface of the scraper (11) located at the facing position of the rotating structure in the opposite direction of the direction of travel of the rotating structure at the position where the edge is located; the surface of the scraper (11) located at the facing position of the rotating structure is the surface where the edge is located.

[0037] According to the same utility model concept, the utility model also provides a welding system, comprising a welding device (3) for welding a workpiece, and also comprising the above-mentioned foreign matter scraping device, wherein the rotating structure is a first positioning wheel (2); the first positioning wheel (2) is used to limit the position of the workpiece and is tangent to the side wall of the workpiece.

[0038] Furthermore, the welding system further comprises a first limiting mechanism, a second limiting structure, and a second positioning wheel (2A);

[0039] The first limiting mechanism and the second limiting structure are both used to limit the workpiece in the height direction of the welding system;

[0040] In the direction of travel of the workpiece, the first limiting mechanism and the second limiting structure are respectively located in front of and behind the welding device (3);

[0041] The first positioning wheel (2) and the second positioning wheel (2A) are respectively located on both sides of the workpiece;

[0042] The second positioning wheel (2A) is tangent to the side wall of the workpiece, thereby limiting the position of the workpiece.

[0043] Through the above setting, the first limiting mechanism and the second limiting mechanism are used to limit the workpiece in the height direction in front of and behind the welding device respectively, so that the height of the workpiece in the welded position is fixed, and the problems of upward and downward deviation are avoided, and the first positioning wheel and the second positioning wheel limit the workpiece on the left and right sides, so that the workpiece can be limited in upward, downward, left and right directions, and the workpiece runs stably at the welding position, and the problems of upward and downward deviation of the workpiece affecting the welding quality are avoided.

[0044] Further, the workpiece comprises a first workpiece (100) and a second workpiece (200) arranged adjacent to each other.

[0045] The first positioning wheel (2) is located on the side of the first workpiece (100) away from the second workpiece (200) and is tangent to the outer wall of the first workpiece (100).

[0046] The second positioning wheel (2A) is located on the side of the second workpiece (200) away from the first workpiece (100) and is tangent to the outer wall of the second workpiece (200); and the welding device (3) is used to weld the first workpiece (100) and the second workpiece (200) together.

[0047] Through the above setting, the first positioning wheel and the second positioning wheel are used to limit the first workpiece and the second workpiece on both sides respectively, and the positioning wheel avoids damaging the side wall of the workpiece by rotating when the workpiece is running.

[0048] The utility model has the advantages and positive effects that:

[0049] 1. The utility model adopts mechanical type shovel scraping design, can reduce machine material (vacuum silicone grease) consumption.

[0050] 2. The utility model has little influence on the stable operation of the steel wire, avoids the problem that the existing technology adopts the way of smearing more vacuum silicone grease to cause the upward and downward sliding of the steel wire on the positioning wheel, and reduces the quality hidden danger.

[0051] 3. Compared with the way of personnel inspection and shovel scraping at a certain time interval in the prior art, the utility model reduces the personnel inspection frequency, reduces the influence on production efficiency, improves single-step production efficiency, and obviously reduces the quality hidden danger compared with personnel inspection and shovel scraping omission.

[0052] 4. The utility model reduces the probability of causing poor welding quality accidents due to the positioning wheel being stuck, can prolong the service life of the positioning wheel, and compared with the form of personnel shovel scraping at a certain time interval in the prior art, the utility model can reduce the accumulation of welding slag splashes on the positioning wheel through the uninterrupted shovel scraping of the foreign matter scraping device.

[0053] 5. The utility model discloses after the verification confirms that the device slagging effect is better, and the sustainable use time is longer, solves the positioning wheel service life short problem, and quality hidden danger such as reduced welding defect. BRIEF DESCRIPTION OF DRAWINGS

[0054] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the drawings needed in the embodiment description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to these drawings without creative labor for the ordinary skilled in the art.

[0055] Figure 1 It is the local plan view of the welding system in the utility model embodiment 1;

[0056] Figure 2 It is the perspective view of the foreign matter scraping device in the utility model embodiment 1 from one direction; Figure 1

[0057] Figure 3 It is the front view of the foreign matter scraping device in the utility model embodiment 1; Figure 2

[0058] Figure 4 It is the A-A section view in the utility model embodiment 1; Figure 3

[0059] Figure 5 It is the A-A section view schematic diagram of the utility model embodiment 2 of replacement; Figure 4

[0060] Figure 6 It is the A-A section view schematic diagram of the utility model embodiment 3 of replacement; Figure 4

[0061] Figure 7 It is the schematic diagram of the foreign matter scraping device in the utility model embodiment 3 after removing the inside guide sleeve of base; Figure 6

[0062] Figure 8 It is the schematic diagram of the inside guide sleeve of base in the utility model embodiment 3. Figure 6

[0063] ​​​​​​​In the above drawings, the scraper 11; the surface 11a; the scraper fastener 111; the first edge f1; the second edge f2; the sliding rod 122; the sliding rod 122; the external thread 12A; the connecting member 13; the nut 14; the spring 15; the mounting seat 16; the fixing seat 17; the fixing seat base 17A; the guide sleeve fastener 17B; the first through hole 171; the base through hole 173; the clearance groove 1731; the guide sleeve fitting section 1732; the first guide sleeve 181; the base inner guide sleeve 183; the first end 1831; the second end 1832; the connecting portion 1833; the first positioning wheel 2; the first positioning wheel side wall 21; the second positioning wheel 2A; the welding device 3; the workpiece guide mechanism 4; the first limit member 51; the first roller 61; the first workpiece 100; the second workpiece 200; the welding position W1; the contact position Wa. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0065] like Figures 1-4 As shown, the present invention provides a foreign matter scraping device for a rotating structure, comprising a mounting seat 16 and a sliding rod 122, wherein the first direction is the extending direction (i.e., the length direction) of the sliding rod 122. Preferably, the first direction can be the running direction of the workpiece (e.g., Figure 1 In the present invention, foreign matter refers to foreign matter adhered to the surface of the rotating structure, such as welding slag splashed onto and adhered to the surface of the rotating structure when the welding device 3 welds the workpiece.

[0066] like Figure 2 、 Figure 3 As shown, the mounting base 16 is fixed with two guide structures. The guide structures are used to limit the position of the sliding rod 122 in the circumferential direction and to limit the position of the sliding rod 122 in the circumferential direction so that the travel direction of the sliding rod 122 is parallel to the first direction. The guide structures and the sliding rod 122 are both clearance-fitted.

[0067] One end of the sliding rod 122 is mounted with a scraper 11 for contacting the side wall of the rotating structure (i.e., the outer wall of the rotating portion of the rotating structure, i.e., the wall parallel to the axis of the rotating structure) to scrape foreign matter off the side wall of the rotating structure. In this embodiment, the side wall of the rotating structure is the side wall 21 of the first positioning wheel.

[0068] The sliding rod 122 is sleeved with a nut 14. The sliding rod 122 is provided with an external thread that mates with the nut 14. Preferably, the length of the external thread 12A in the first direction (the extension of the external thread 12A in the first direction) can be set to be greater than the length of the nut 14 in the first direction (i.e., the extension of the nut 14 in the first direction). In other words, the dimension of the external thread 12A projected in the first direction is greater than the dimension of the nut 14 projected in the first direction. The nut 14 can move along the external thread 12A, allowing for adjustment of the spacing between the nut 14 and the guide structure facing the nut 14. The first direction is the length of the sliding rod 122.

[0069] A spring 15 is provided between the nut 14 and the guide structure toward the nut 14 (i.e., the guide structure closest to the nut 14). The spring 15 is sleeved on the outside of the sliding rod 122. One end of the spring 15 abuts against the nut 14 (can be installed on the nut 14), and the other end of the spring 15 abuts against the guide structure toward the nut 14 (can be installed on the guide structure toward the nut 14).

[0070] The guide structure toward the nut 14 is located between the nut 14 and the first connection point, which is the connection point between the sliding rod 122 and the connecting member 13. The nut 14 and the spring 15 are both located between the guide structure toward the nut 14 and the scraper 11. The other end of the sliding rod 122 is provided with the connecting member 13, and the size of the connecting member 13 is larger than the size of the first through hole 171.

[0071] The guide structure includes a fixing base 17 fixed to the mounting base 16 and a first guide sleeve 181 disposed on the fixing base 17. The fixing base 17 defines first through-holes 171 corresponding to the sliding rods 122. The sliding rods 122 have a clearance fit with the outer walls of the first through-holes 171. The sliding rods 122 also have a clearance fit with the outer walls. The axis of the first through-holes 171 is parallel to the first direction.

[0072] In this embodiment, two guide structures are arranged at intervals along the first direction. Of course, three or more guide structures can also be arranged.

[0073] A first guide sleeve 181 is provided on at least one side of the first through hole 171. The first guide sleeve 181 is provided on the fixing seat 17. The first guide sleeve 181 is clearance-fitted with the sliding rod 122.

[0074] The external threads on the nut 14 and the sliding rod 122 are both located near one end of the sliding rod 122. The other end of the sliding rod 122 is fixed to the other end of the sliding rod 122 via the connecting member 13. The sliding rod 122 is fixedly connected to the sliding rod 122 via the connecting member 13. In this embodiment, all guide structures are located between the scraper 11 and the connecting member 13, and between the nut 14 and the connecting member 13.

[0075] The scraper 11 is detachably connected to the sliding rod 122. The scraper 11 has K scraping segments, and the scraper 11 has K installation positions corresponding to the K scraping segments, where K≥2.

[0076] When the scraper 11 is located at any j-th installation position among the K installation positions, the j-th scraping segment corresponding to the j-th installation position faces the side wall of the rotating structure, 1≤j≤K.

[0077] Preferably, the scraper 11 is a polyhedron structure with at least four surfaces, and the scraping section is an edge of the polyhedron structure. The scraper 11 can be a rectangular parallelepiped structure, that is, the scraping section is an edge of the rectangular parallelepiped. In this embodiment, a groove is opened on a rectangular parallelepiped, and another rectangular parallelepiped is fixed in the groove, thereby forming the scraper 11, which is a polyhedron structure. Figure 3 As shown, the first edge f1 and the second edge f2 of the polyhedron structure can be used as scraping segments. That is, when scraping the rotating structure, the edges of the polyhedron structure are parallel to the rotating axis of the rotating structure. Figure 1 In the illustrated view, the first edge f1 acts as a scraping segment to scrape welding slag from the sidewall of the rotating structure. By rotating the scraper 11 180 degrees, the second edge f2 can also serve as a scraping segment. When the edge contacts the sidewall of the first positioning wheel 2, the edge is parallel to the axis of the rotating structure.

[0078] When any one of the scraping segments of the scraper 11 contacts the side wall of the rotating structure, the range of the angle of contact between the scraper 11 and the rotating structure is [15°, 75°]; the extending direction of the edge in contact with the side wall of the rotating structure is parallel to the axis of the rotating structure. More preferably, the range of the angle of contact between the scraper (11) and the rotating structure is [40°, 50°].

[0079] When an edge of the scraper 11 contacts the side wall of the rotating structure, the head-on angle between the scraper 11 and the rotating structure is defined as: the angle between the surface of the scraper 11 facing the rotating structure and the direction opposite to the direction of travel of the rotating structure at the position of the edge; the surface of the scraper 11 facing the rotating structure is the surface where the edge is located.

[0080] like Figure 1As shown, when the first edge f1 of the scraper 11 (serving as the scraping segment) contacts the side wall of the rotating structure (i.e., the side wall 21 of the first positioning wheel), the contact position Wa is located on the first edge f1, i.e., the first edge f1 is the position where the scraper 11 is tangent to the first positioning wheel 2. Figure 1 In the figure, the facing angle θ between the scraper 11 and the rotating structure is: the angle between the direction La opposite to the travel direction Lc of the first positioning wheel 2 at the position of the first edge f1 (that is, the travel direction at the tangent position Wa) and the surface 11a of the scraper 11 located at the facing position of the rotating structure, that is, the angle between the direction La and the surface 11a, or the angle between the direction La and the direction Lb, where the direction Lb passes through the first edge f1 and is perpendicular to the axis of the first positioning wheel 2; the surface 11a of the scraper 11 located at the facing position of the first positioning wheel 2 is the surface where the first edge f1 is located.

[0081] In this embodiment, the scraper 11 can be fixed to the sliding rod 122 by a scraper fastener 111 (such as a bolt). The installation position of the scraper 11 can be adjusted by adjusting the rotation position of the bolt. In order to ensure that the scraper is relatively stable in each installation position and avoid large shaking, for example, the bolt can be matched with a spring to achieve stability at each screwing position of the bolt. In addition, the angle between the surface of the polyhedron structure facing the sliding rod 122 and the extension direction of the sliding rod 122 can also be set to be in the range of 15 degrees to 45 degrees, such as Figure 2 When the polyhedron is rotated to various installation positions, the surface of the polyhedron structure facing the sliding rod 122 is limited by the sliding rod 122, thereby preventing the polyhedron from shaking greatly during scraping.

[0082] The spacing between the nut 14 and the guide structure facing the nut 14 can be set based on the requirement that the sliding rod 122 moves rightward after the spring is stretched, thereby creating a gap between the scraper 11 and the rotating structure. The spacing between the nut 14 and the guide structure facing the nut 14 can also be determined based on the required abutment force of the scraper 11 against the side wall of the rotating structure.

[0083] Based on the same utility model concept, the utility model further provides a welding system, comprising the above-mentioned foreign matter scraping device, wherein the rotating structure is a first positioning wheel 2. The first positioning wheel 2 is tangent to the side wall of the workpiece.

[0084] The first positioning wheel 2 is used to be tangent to the side wall of the workpiece. The speed of the first positioning wheel 2 on the tangent line and the speed of the second positioning wheel 2A on the tangent line are preferably the same as the travel speed of the first workpiece and the second workpiece.

[0085] like Figure 1-Figure 3As shown, the welding system also includes a first limiting mechanism, a second limiting structure, a second positioning wheel 2A, and a welding device 3 for welding the workpiece. The first and second limiting structures are both used to limit the workpiece's position in the height direction of the welding system. In the workpiece's travel direction, the first limiting mechanism and second limiting structure are located in front of and behind the welding device 3, respectively. The first and second positioning wheels 2, 2A are located on either side of the workpiece. The second positioning wheel 2A is tangential to the sidewalls of the workpiece, thereby limiting the workpiece's position.

[0086] The workpieces include a first workpiece 100 and a second workpiece 200 that are adjacent to each other. The first positioning wheel 2 is located on the side of the first workpiece 100 away from the second workpiece 200 and is in contact with the outer wall of the first workpiece 100 ( Figure 1 The second positioning wheel 2A is located on the side of the second workpiece 200 away from the first workpiece 100 and is tangent to the outer wall of the second workpiece 200 ( Figure 1 The welding device 3 is used to weld the first workpiece 100 and the second workpiece 200, whose top surfaces are located in the same plane, together to form an integrated structure. The welding position W1 of the welding device 3 is located between the first workpiece 100 and the second workpiece 200, such as Figure 1 shown.

[0087] In the present invention, the steel strip and the steel wire move side by side along the running direction. The steel strip and the steel wire are laser welded together at the welding position W1, and the tooth tips of the band saw blade are formed by milling the position of the steel wire of the welded structure.

[0088] In this embodiment, the first workpiece 100 is a steel wire, and the second workpiece 200 is a steel strip. The first limiting mechanism includes a first limiting member 51 and a second limiting member (not shown) located above and below the workpieces, respectively. The first limiting member 51 and the second limiting member form a clamping structure that simultaneously clamps the first workpiece 100 and the second workpiece 200. The second limiting structure includes a first roller 61 and a second roller (not shown) located above and below the workpieces, respectively. Both the first roller 61 and the second roller are in rolling contact with the workpieces. The workpiece guide mechanism 4 can be a mechanism for clamping the workpieces. The mounting seat 16 can be fixed to the side wall of the workpiece guide mechanism 4. Both the first limiting member 51 and the second limiting member can be fixed to the wall of the workpiece guide mechanism 4 facing the second limiting structure. The rotation axes of the first positioning wheel 2 (i.e., the rotating structure) and the second positioning wheel 2A are perpendicular to the direction of travel of the workpieces. The first roller 61, the second roller, the first limiting member 51, and the second limiting member ensure that the running plane of the steel strip and the steel wire is horizontal, preventing the steel strip from tilting and affecting the welding effect.

[0089] The following is a further detailed description of Example 1.

[0090] When laser welding composite steel strips (i.e., structures formed by welding side-by-side steel strips and steel wires), positioning wheels are required to maintain the strip's position for continuous welding. Laser welding produces large amounts of molten slag and spatter. When this slag and spatter adhere to the fixture, it can affect the stability and weld strength of the laser weld. This utility model is designed to eliminate this adhesion to the fixture during laser welding. This utility model primarily addresses the problem of cleaning slag and spatter adhering to the first positioning wheel 2 during continuous laser welding of steel strips. This utility model can be used for steel strips or saw blades.

[0091] This device uses a spring as a pressure source, providing a certain degree of cushioning and adjustability. By adjusting the advance and retreat of the nut at the front end of the spring device, it regulates the force exerted by the foreign matter scraper (also known as the scraping device) on the positioning wheel. The scraper 11 can be constructed of a hard alloy block, which is wear-resistant and strong.

[0092] The foreign body scraping device and the positioning wheel can be designed at a 40-degree angle so that the hard carbide cutting edge (i.e., the edge of the scraper 11) directly contacts the positioning wheel, and the force at this angle is on the inner side of the positioning wheel. When a slightly larger molten welding slag is accidentally encountered, the positioning wheel will not be immediately stuck due to the action of the spring 15, thereby preventing it from stopping rotation.

[0093] The foreign body scraping device uses two cross bars (i.e., sliding bars 122) connected in parallel to generate a certain supporting force and ensure that the device can move left and right flexibly and reliably.

[0094] The hard alloy of the foreign body scraping device is divided into multiple surfaces including front, rear, left and right. The edges can be selected to be used as scraping segments and can be replaced according to the wear and tear of the scraping segments.

[0095] In the present invention, a carbide polyhedron with a central circular hole (i.e., scraper 11) is secured to the head of the foreign matter scraper device using screws (i.e., scraper fasteners 111). The screws are secured within the circular holes. During installation, the edge of the polyhedron (i.e., the first edge f1) is positioned against the first positioning wheel 2. The position of the nut 14 can be adjusted based on the desired contact pressure on the first positioning wheel 2. For example, the nut 14 can be adjusted clockwise to tighten the scraper 11 against the first positioning wheel 2 until fine weld slag is scraped off.

[0096] When the scraping section (i.e., the edge of the polyhedron that contacts the welding slag on the outer wall of the first positioning wheel 2) needs to be replaced, the nut can be adjusted counterclockwise so that the scraper 11 does not contact the first positioning wheel 2 (i.e., there is a gap between the scraper 11 and the first positioning wheel). The screws securing the scraper 11 can be rotated a certain angle to replace the scraping section of the scraper 11 (i.e., the edge that contacts the welding slag on the outer wall of the first positioning wheel 2) and the scraper can be used again.

[0097] In the present invention, when it is necessary to increase the pressure of the scraper 11 on the first positioning wheel 2, the nut 15 can be screwed so that the distance between the nut 15 and the fixed seat 17 set toward the nut is reduced, and the spring 15 is compressed, that is, the pressure applied by the spring 15 on the nut 14 increases. This force is transmitted to the scraper 11 through the nut 14, the sliding rod 122, the connecting member 13, and the sliding rod 122, so that the scraper 11 applies greater pressure on the outer wall of the positioning wheel 2.

[0098] When it is necessary to reduce the pressure of the scraper 11 on the first positioning wheel 2, the nut 15 can be screwed to increase the distance between the nut 15 and the fixing seat 17 set towards the nut, and the spring 15 is extended, that is, the pressure applied by the spring 15 on the nut 14 is reduced. The force is transmitted to the scraper 11 through the nut 14, the sliding rod 122, the connecting piece 13, and the sliding rod 122, so that the scraper 11 applies less pressure on the outer wall of the positioning wheel 2.

[0099] After the foreign matter scraping device of the present invention is installed, the scraper 11 can contact the side wall (outer wall) of the first positioning wheel 2, and the scraper 11 abuts the side wall of the first positioning wheel 2, and the spring 15 is in a free state (that is, a critical state between the compressed state and the stretched state), or in a compressed state.

[0100] If the welding slag attached to the outer side of the first positioning wheel 2 is too stubborn to be completely removed by a single scraping motion, the welding slag on the first positioning wheel 2 will push the scraper 11 to the right. At this time, the sliding rod 122 drives the nut 14 to move rightward, compressing the spring 15 and preventing the first positioning wheel 2 from getting stuck. The compressed spring 15 generates a leftward restoring force, which can still keep the scraper 11 in good contact with the outer wall of the first positioning wheel.

[0101] The purpose of providing the two sliding rods (i.e., sliding rods 122) in the present invention is that if the nut 14 is installed between the scraper 11 and the fixing seat 17, then after the foreign matter scraping device of the present invention is installed, the scraper 11 maintains contact with the positioning wheel. If the scraper 11 becomes worn and needs to be replaced, it is difficult to remove the scraper 11. In other words, it is easy for the scraper 11 to hit the first positioning wheel 2 during removal, which can easily damage the first positioning wheel 2. After removing the nut 14, the sliding rod 122 can be moved to the right together, thereby leaving a gap between the scraper 11 and the first positioning wheel 2, making it easier to remove and replace the scraper 11.

[0102] Example 2

[0103] Figure 1-Figure 3 This is also the structural diagram of Example 2. Figure 5 replace Figure 4 , as Figure 3 AA cross-sectional view.

[0104] The main difference between Example 2 and Example 1 is that, in the guide structure toward the nut 14, the fixed seat 17 includes a detachably connected base inner guide sleeve 183 and a fixed seat base 17A. The fixed seat base 17A is fixed to the mounting base 16 and is mounted on the outside of the base inner guide sleeve 183. The base inner guide sleeve 183 is used to mount the other end of the spring 15 and is mounted on the outside of the sliding rod 122. The base inner guide sleeve 183 has a first through hole 171 defined on its inner side for a clearance fit with the sliding rod 122. When the base inner guide sleeve 183 and the fixed seat base 17A are connected, the base inner guide sleeve 183 is secured to the fixed seat base 17A via a guide sleeve fastener 17B. When the base inner guide sleeve 183 and the fixed seat base 17A are disconnected, the base inner guide sleeve 183 can move relative to the fixed seat base 17A in a direction away from the nut 14. The base inner guide sleeve 183 forms a protruding structure on the fixed base 17A facing the nut 14 .

[0105] Regarding other structures of this embodiment, please refer to the contents of Example 1.

[0106] Example 3

[0107] Figure 1-Figure 3 This is also the structural diagram of Example 3. Figure 6 replace Figure 4 , as Figure 3AA cross-sectional view. The main difference between this embodiment 3 and embodiment 2 is that the inner guide sleeve 183 of the base includes a first end 1831, a connecting portion 1833, and a second end 1832 connected in sequence. The outer circumferential dimensions of the first end 1831 and the outer circumferential dimensions of the second end 1832 are both larger than the outer circumferential dimensions of the connecting portion 1833, so that the inner guide sleeve 183 of the base forms an I-shaped structure as a whole. The fixed base 17A is provided with a base through hole 173, and the base through hole 173 includes a mutually connected clearance groove 1731 and a guide sleeve matching section 1732, and the guide sleeve matching section 1732 is located on the side of the clearance groove 1731 away from the nut 14. The size of the clearance groove 1731 is adapted to the outer circumferential dimension of the first end 1831, and the size of the guide sleeve matching section 1732 is adapted to the size of the connecting portion 1833. The outer circumferences of the first end portion 1831 and the second end portion 1832 are both larger than those of the guide sleeve mating section 1732. The length of the connecting portion 1833 in the first direction is greater than the length of the guide sleeve mating section 1732 in the first direction. In other words, the projected dimension of the connecting portion 1833 in the first direction is greater than the projected dimension of the guide sleeve mating section 1732 in the first direction. When the base inner guide sleeve 183 is fixedly connected to the fixed base 17A via the guide sleeve fastener 17B, the second end portion 1832 contacts the fixed base 17A.

[0108] like Figure 6-Figure 8 As shown, when the inner guide sleeve 183 of the base is fixedly connected to the fixed seat base 17A through the guide sleeve fastener 17B, the wall of the fixed seat base 17A facing away from the nut 14 contacts the second end 1832. Since the length of the connecting portion 1833 in the first direction is greater than the length of the guide sleeve fitting section 1732 in the first direction, in the first direction, there is still a gap between the first end 1831 and the wall of the clearance groove 1731 (that is, the wall arranged toward the first end 1831), that is, at least part of the clearance groove 1731 is not occupied, so that when the inner guide sleeve 183 of the base needs to move relative to the fixed seat base 17A in the direction away from the nut 14, the first end 1831 can extend into the clearance groove 1731, and the wall of the clearance groove 1731 serves to limit the first end 1831. When the first end 1831 contacts the wall of the clearance groove 1731 facing the first end 1831, there is a gap between the scraper 11 and the rotating structure, so that the scraper 11 can be removed from the sliding rod 122. Figure 6 As shown, when the second end 1832 contacts the fixed seat base 17A, the through hole opened in the fixed seat base 17A and the groove opened in the guide sleeve 183 on the inner side of the base are aligned with each other, so that the guide sleeve fastener 17B can extend into the above-mentioned through hole and groove, thereby fixing the guide sleeve fastener 17B to the fixed seat base 17A.

[0109] Figure 6-Figure 8 In the embodiment, the through holes or grooves corresponding to the guide sleeve fasteners on the inner side guide sleeve and the fixed seat base are omitted. The guide sleeve fasteners can be arranged as shown in the following figure. Figure 5 In addition, additional fasteners (not shown in the figure) can be arranged on the side wall of the inner side guide sleeve 183 along the first direction, and the inner side guide sleeve and the fixed seat base are fastened, so that the inner side guide sleeve and the fixed seat base are better fixed.

[0110] For other structures of the embodiment, refer to the contents in the embodiment 1 and the embodiment 2.

[0111] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other.

[0112] The embodiments of the utility model have been described in detail above, but the content described is only the preferred embodiment of the utility model, and cannot be considered as limiting the scope of the utility model. Any equivalent changes and improvements made within the scope of the utility model should still belong to the scope of the utility model. After reading the utility model, the skilled in the art can modify various equivalent forms of the utility model, which fall within the scope defined by the claims attached to the application. In the case of no conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

Claims

1. A foreign matter scraping device for a rotating structure, comprising a mounting seat (16), characterized in that: Also included is a sliding rod (122); At least one guide structure is fixed on the mounting seat (16); the guide structure is used to limit the sliding rod (122) in the circumferential direction, and is used to limit the sliding rod (122) in the circumferential direction, so that the moving direction of the sliding rod (122) is parallel to the first direction, and the first direction is the extension direction of the sliding rod (122); the guide structure and the sliding rod (122) are clearance-fitted; A scraper (11) is mounted on one end of the sliding rod (122) for contacting the side wall of the rotating structure; The sliding rod (122) is sleeved with a nut (14); the sliding rod (122) is provided with an external thread (12A) that matches the nut (14); the length of the external thread (12A) in the first direction is greater than the length of the nut (14) in the first direction; A spring (15) is provided between the nut (14) and the guide structure toward the nut (14), and the spring (15) is sleeved on the outside of the sliding rod (122). One end of the spring (15) abuts against the nut (14), and the other end of the spring (15) abuts against the guide structure toward the nut (14); The nut (14) and the spring (15) are both located between the guide structure facing the nut (14) and the scraper (11).

2. The foreign matter scraping device according to claim 1, characterized in that: The guide structure comprises a fixing seat (17) fixed to the mounting seat (16); a first through hole (171) corresponding to the sliding rod (122) is provided on the fixing seat (17); and an axial direction of the first through hole (171) is parallel to the first direction.

3. The foreign matter scraping device according to claim 2, characterized in that: In the guide structure toward the nut (14), the fixed seat (17) includes a detachably connected base inner guide sleeve (183) and a fixed seat base (17A); The fixed seat base (17A) is fixed to the mounting seat (16) and is sleeved on the outside of the inner guide sleeve (183) of the base; the inner guide sleeve (183) of the base is used to install the other end of the spring (15) and is sleeved on the outside of the sliding rod (122); the inner side of the inner guide sleeve (183) of the base is provided with the first through hole (171); When the base inner guide sleeve (183) and the fixed seat base (17A) are in a connected state, the base inner guide sleeve (183) and the fixed seat base (17A) are fixed to each other; When the base inner guide sleeve (183) and the fixed seat base (17A) are in an unconnected state, the base inner guide sleeve (183) can move relative to the fixed seat base (17A) in a direction away from the nut (14).

4. The foreign matter scraping device according to claim 3, characterized in that: The inner guide sleeve (183) of the base includes a first end portion (1831), a connecting portion (1833), and a second end portion (1832) connected in sequence; the outer circumference of the first end portion (1831) and the outer circumference of the second end portion (1832) are both larger than the outer circumference of the connecting portion (1833), so that the inner guide sleeve (183) of the base forms an I-shaped structure as a whole; a base through hole (173) is provided on the fixed seat base (17A), and the base through hole (173) includes a mutually connected paving groove (1731) and a guide sleeve matching section (1732), and the guide sleeve matching section (1732) is located on the side of the paving groove (1731) away from the nut (14). side; the size of the relief groove (1731) is adapted to the outer circumferential size of the first end portion (1831), and the size of the guide sleeve fitting section (1732) is adapted to the size of the connecting portion (1833); the outer circumferential size of the first end portion (1831) and the outer circumferential size of the second end portion (1832) are both larger than the size of the guide sleeve fitting section (1732), and the length of the connecting portion (1833) in the first direction is larger than the length of the guide sleeve fitting section (1732) in the first direction; when the guide sleeve (183) inside the base is fixedly connected to the fixed seat base (17A) through the guide sleeve fastener (17B), the second end portion (1832) contacts the fixed seat base (17A).

5. The foreign matter scraping device according to any one of claims 1 to 4, characterized in that: At least two guide structures are arranged at intervals along the first direction.

6. The foreign matter scraping device according to any one of claims 1 to 4, characterized in that: The scraper (11) is detachably connected to the sliding rod (122); the scraper (11) has K scraping segments, and the scraper (11) has K installation positions corresponding to the K scraping segments, where K is greater than or equal to 2; When the scraper (11) is located at any j-th installation position among the K installation positions, the j-th scraper segment corresponding to the j-th installation position faces the side wall of the rotating structure, 1≤j≤K.

7. The foreign matter scraping device according to claim 6, characterized in that: The scraper (11) is a polyhedral structure having at least four surfaces, and the scraping segments are edges in the polyhedral structure; when any one of the scraping segments of the scraper (11) contacts the side wall of the rotating structure, the range of the angle of contact between the scraper (11) and the rotating structure is [15°, 75°]; the extending direction of the edge in contact with the side wall of the rotating structure is parallel to the axis of the rotating structure; When an edge of the scraper (11) contacts the side wall of the rotating structure, the facing angle between the scraper (11) and the rotating structure is defined as: the angle between the surface of the scraper (11) located at the facing position of the rotating structure in the opposite direction of the direction of travel of the rotating structure at the position where the edge is located; the surface of the scraper (11) located at the facing position of the rotating structure is the surface where the edge is located.

8. The foreign matter scraping device according to claim 7, characterized in that: The range of the angle of contact between the scraper (11) and the rotating structure is [40°, 50°].

9. A welding system comprising a welding device (3) for welding a workpiece, characterized in that It also comprises a foreign matter scraping device according to any one of claims 1 to 8, wherein the rotating structure is a first positioning wheel (2); the first positioning wheel (2) is used to limit the position of the workpiece and is tangent to the side wall of the workpiece.

10. The welding system according to claim 9, characterized in that: The welding system further comprises a first limiting mechanism, a second limiting structure, and a second positioning wheel (2A); the first limiting mechanism and the second limiting structure are both used to limit the workpiece in the height direction of the welding system; in the direction of travel of the workpiece, the first limiting mechanism and the second limiting structure are respectively located in front of and behind the welding device (3); the first positioning wheel (2) and the second positioning wheel (2A) are respectively located on both sides of the workpiece; the second positioning wheel (2A) is tangent to the side wall of the workpiece, thereby limiting the workpiece; The workpieces include a first workpiece (100) and a second workpiece (200) that are adjacently arranged; the first positioning wheel (2) is located on a side of the first workpiece (100) away from the second workpiece (200) and is tangent to an outer wall of the first workpiece (100); the second positioning wheel (2A) is located on a side of the second workpiece (200) away from the first workpiece (100) and is tangent to an outer wall of the second workpiece (200); and the welding device (3) is used to weld the first workpiece (100) and the second workpiece (200) together.

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