A steel strip U-shaped groove blanking and charging device in welding wire production
By using a powder scraping unit to shape the powder in the U-shaped groove of the steel strip during welding wire production, the problem of powder overflow was solved, ensuring the smooth progress of welding wire production and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN DAQIAO METAL WELDING WIRE CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-14
Smart Images
Figure CN224492956U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of welding wire production equipment, and in particular relates to a steel strip U-shaped groove feeding and filling device in welding wire production. Background Technology
[0002] In welding wire production, steel strips are passed sequentially through opposing rollers. First, the strip's cross-section is cold-rolled into a U-shape. Then, flux powder is filled into the U-shaped strip, followed by a second cold rolling process. This gradually closes the U-shaped section, forming an O-shape, before proceeding to the subsequent cold drawing and stretching process. In existing technology, during the feeding process into the U-shaped strip, the amount of flux powder entering the strip is difficult to control due to the narrow groove. Excess flux is often used, and the excess powder is then expelled during subsequent cold rolling by the rollers' compression and deformation. However, during the closing of the U-shaped groove, the overflowing flux powder can affect the opening, causing incomplete closure. This can lead to flux leakage in some segments during the subsequent drawing process, affecting product quality. Utility Model Content
[0003] In view of this, the present invention aims to provide a steel strip U-shaped groove feeding and filling device in the production of welding wire, so as to sort out the powder falling into the U-shaped steel strip groove, discharge the excess powder, and avoid affecting the subsequent processes.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A U-shaped groove feeding and filling device for steel strip in welding wire production, comprising:
[0006] The powder discharge unit includes a powder tank and a conveyor belt placed below the powder tank discharge port. The steel belt U-shaped groove is located below the end of the conveyor belt, and the powder falling from the powder tank discharge port can be transported to the steel belt U-shaped groove by the conveyor belt.
[0007] The powder scraping unit is located on one side of the powder dropping unit along the direction of movement of the steel belt, and the powder scraping unit includes a scraper, the scraper includes a scraping part that can extend into the U-shaped groove of the steel belt and scraping edge parts that extend upward at an angle on both sides of the scraping part, and the scraping edge parts can rest on the U-shaped groove of the steel belt.
[0008] Furthermore, a flexible pad is fixed on the scraping edge, and the flexible pad is placed between the steel strip U-shaped groove and the hanging edge.
[0009] Furthermore, each scraped edge is also fixed with multiple chucks, each chuck including a stud and a flange extending outward from the end of the stud, a nut and the stud are screwed together, the stud passing through the flexible pad and the hanging edge.
[0010] Furthermore, each of the scraped edges is arc-shaped, and the edge of the U-shaped groove of the steel strip is placed inside the arc-shaped opening.
[0011] Furthermore, a fixing rod is fixed above the U-shaped groove of the steel strip, and the fixing rod is inserted into a sleeve. A connecting rod extends from the middle of the powder scraping unit, and the connecting rod is fixedly connected to the sleeve.
[0012] Furthermore, a set screw is screwed onto the sleeve, and the end of the set screw can pass through the sleeve and abut against the connecting rod.
[0013] Furthermore, a guide plate is provided below the end of the conveyor belt, with one end of the guide plate positioned directly below the end of the conveyor belt and the other end positioned directly above the U-shaped groove of the steel belt.
[0014] Furthermore, it also includes a material collection tray, which is placed directly below the powder dropping unit and the powder scraping unit.
[0015] Compared with existing technologies, the U-shaped groove feeding and filling device for steel strip in welding wire production described in this utility model has the following advantages:
[0016] This utility model employs a powder scraping unit installed downstream of the powder filling process to scrape excess powder from the steel strip U-shaped groove to the rear or sides, thereby shaping the powder in the steel strip U-shaped groove and preventing excessive powder in the steel strip U-shaped groove from affecting the subsequent cold rolling joint process.
[0017] The use of a clamp allows the flexible pad to be detached, which facilitates the replacement of the flexible pad while preventing excessive wear of the flexible pad from causing rigid contact between the edge of the steel strip and the scraper edge. Attached Figure Description
[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall production line for welding wire steel strip pressing and rolling.
[0020] Figure 2 This is a schematic diagram of the overall structure of the powder scraping unit;
[0021] Figure 3 This is a schematic diagram illustrating the changes during the steel strip plastering and jointing process.
[0022] Figure 4 This is a schematic diagram of the mating parts of the limiting plate and the fixing plate;
[0023] Figure 5 A schematic diagram of the structure for setting up the limit block.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1-U-forming roller assembly; 2-Seam forming roller assembly; 21-Fixed frame; 211-Gutter; 3-O-forming roller assembly; 31-Gantry; 41-Fixed plate; 42-Limiting plate; 421-Guide surface; 422-Auxiliary clamping part; 43-Bolt; 44-Guide rod; 51-Adjusting platform; 511-Oblong hole; 52-Limiting pressure block; 522-Guide plate; 523-Screw; 524-Adjusting nut; 6-Powder dropping unit; 61-Powder tank; 62-Gnawing cage; 63-Conveyor belt; 64-Guide plate; 7-Powder scraping unit; 71-Scraper; 711-Scraping part; 712-Scraping edge part; 73-Flexible pad; 74-Chuck; 741-Stud; 742-Flange; 743-Clamping nut; 75-Sleeve; 77-Top screw; 78-Connecting rod; 79-Fixed rod. Detailed Implementation
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0030] The steel strip rolling mill for producing welding wire according to this utility model includes at least one U-shaped forming roller group 1, a seam forming roller group 2, and an O-shaped forming roller group 3 arranged sequentially along the direction of steel strip movement. Between the U-shaped forming roller group 1 and the seam forming roller group 2, a powder-dropping unit 6 and a powder-scraping unit 7 are also provided. The U-shaped forming roller group 1 and the O-shaped forming roller group 3 each include two oppositely arranged rollers, and the circumferential surface of the rollers corresponds to the cross-section of the steel strip to be formed. The seam forming roller group 2 can be composed of two oppositely arranged rollers with a seam V-shaped groove corresponding to the U-shaped groove of the steel strip on the circumferential surface of one of the rollers, or it can be composed of three oppositely arranged rollers, with the circumferential surfaces of two rollers respectively placed on the inclined sides of the side wall of the U-shaped groove of the steel strip. This applies external force to the side walls of the U-shaped groove during operation, causing the side walls to come together to complete the seam. The two rollers can be mounted on a fixed frame 21, through which the fixed frame 21 applies a supporting force to the two rollers. Specifically, the fixing frame 21 is positioned above another roll and includes a slot 211 for mounting the roll shaft. The shafts of the two rolls that apply external force to the sidewalls of the U-shaped groove of the steel strip are placed inside the slot 211 and rotatably connected to the groove wall of the slot 211. Simultaneously, a slider is provided on each side of the fixing frame 21. The fixing frame 21 is slidably connected to the slide rails on both sides of a gantry 31 via the sliders, and the sliders are supported by screws 523 or nuts in the slide rails, thus fixing the fixing frame 21 in position. The two rolls on the fixing frame 21 can be driven by the friction of the moving steel strip or the friction of the lower roll, or a power source such as a motor can be fixed to the fixing frame 21 to make the two rolls rotate actively. The specific structure of each roll and how to drive or control the rotation of the rolls are existing technologies and will not be described in detail here.
[0031] In operation, the U-shaped forming roller group 1 presses the cross-section of the steel strip into a U-shape to form a U-shaped groove. Then, powder is filled into the U-shaped groove through the powder feeding unit 6. The steel strip then sequentially passes through the seam forming roller group 2 and the O-shaped forming roller group 3 to complete the initial production, awaiting the subsequent drawing process. In other embodiments, there can be multiple U-shaped forming roller groups 1, allowing the cross-section of the steel strip to be progressively pressed into a U-shape.
[0032] Specifically, in this embodiment, the powder feeding unit 6 includes a powder tank 61 and a conveyor belt 63 positioned below the discharge port of the powder tank 61. To control the feeding speed and ensure uniform feeding, a auger 62 is provided below the powder tank 61. The auger 62 transports the material in the powder tank 61 to the conveyor belt 63, and then the conveyor belt 63 transports the powder into the U-shaped groove of the steel belt. Those skilled in the art should know that how to transport materials via the auger 62 is common knowledge in the art, and the setting of the auger 62 will not be described in detail here. Specifically, the U-shaped groove of the steel belt is located below the end of the conveyor belt 63. The powder falling from the discharge port of the powder tank 61 can be transported by the conveyor belt 63 to the U-shaped groove of the steel belt to fill the steel belt with powder. In this embodiment, to make the steel belt feeding more accurate, a guide plate 64 is also provided below the steel belt. The guide plate 64 is inclined, with one end positioned directly below the end of the conveyor belt 63 and the other end positioned directly above the U-shaped groove of the steel belt. This ensures that the material first falls onto the guide plate 64 on the conveyor belt 63, and then slides off the guide plate 64 into the steel belt U-shaped groove, thus preventing some powder from falling into the steel belt U-shaped groove due to differences in the position of separation from the conveyor belt 63.
[0033] The powder scraping unit 7 is located on one side of the powder dropping unit 6 along the direction of the steel strip movement, i.e., downstream of the powder dropping unit 6. The powder scraping unit 7 includes a scraper 71, which includes a scraping part 711 that can extend into the U-shaped groove of the steel strip and scraping edge parts 712 that extend upward at an angle on both sides of the scraping part 711. The scraping edge parts can rest on the U-shaped groove of the steel strip, so that the upper surface of the powder pile in the steel strip forms a V-shape under the action of the scraper 71. When the steel strip moves to the seam forming roller group 2, the groove walls on both sides of the U-shaped groove of the steel strip contract inward. At this time, the powder also contracts towards the middle. Through the V-shaped powder pile design, the powder enters the space surrounded by the V-shape during the inward contraction process, thereby avoiding powder overflow and making the space enclosed by the steel strip as solid as possible, reducing the occurrence of cavities in the steel strip and affecting product quality.
[0034] In this embodiment, a flexible pad 73 is also fixed on the scraping part 712, and the flexible pad 73 is placed between the U-shaped groove of the steel strip and the hanging part. Thus, the flexible pad 73 contacts the two sides of the steel strip, avoiding direct contact between the scraper 71 and the edge of the steel strip, which would damage the edge of the steel strip and affect the sealing effect. Specifically, in this embodiment, each scraping part 712 is also fixed with multiple clamps 74. Each clamp 74 includes a stud 741 and a flange 742 extending outward from the end of the stud 741. A clamping nut 743 is screwed to the stud 741. The clamping stud 741 passes through the flexible pad 73 and the hanging part 712 through the through hole on the flexible pad 73 and the scraping part 712. Then, the flexible pad 73 and the scraping part 712 are fixed by tightening the clamping nut 743. At the same time, it is convenient to quickly replace the flexible pad 73, avoiding the flexible pad 73 from being in contact with the edge of the steel strip for a long time, which would cause scratching and damage to the flexible pad 73 and the scraper 71. Each of the scraping portions 712 is arc-shaped, and the edge of the U-shaped groove of the steel strip is placed within the arc-shaped opening, thereby making the contact between the edge of the scraper 71 and the edge of the steel strip more reliable. The arc-shaped design scrapes the upper surface of the edge of the U-shaped groove of the steel strip, preventing residual powder from affecting the joint. A fixing rod 79 is fixed above the U-shaped groove of the steel strip, and the fixing rod 79 is inserted into a sleeve 75. A connecting rod 78 extends from the middle of the powder scraping unit 7, and the connecting rod 78 is fixedly connected to the sleeve 75. A set screw 77 is screwed onto the sleeve 75, and the end of the set screw 77 can pass through the sleeve 75 and press tightly against the connecting rod 78. This fixes the angle and height of the scraper 71, and the fixing of the set screw 77 shares the weight of the scraper 71, reducing damage to the flexible pad 73 during the movement of the steel strip. Those skilled in the art should know that the fixed rod 79, fixed plate 41, powder tank 61, auger 62 and other components can be fixed by corresponding support frames, etc. The specific fixing structure and fixing method can be arranged according to the site conditions, and will not be described in detail here.
[0035] After the powder filling is completed by the U-shaped steel strip roller, the seam forming roller group 2 is provided with a limiting plate 42 on the side near the U-shaped forming roller group 1, and a space for the steel strip to pass through is left between the two limiting plates 42, and the two sides of the steel strip can be tightly attached to the inner sidewalls of the two limiting plates 42 respectively. Specifically, in this embodiment, a fixing plate 41 is fixedly provided on the outer side of each of the two limiting plates 42, and a guide rod 44 is provided between the two fixing plates 41. A guide sleeve corresponding to the guide rod 44 is fixedly provided on each limiting plate 42, so that the fixing plate 41 can move along the direction of the guide rod 44. Bolts 43 are screwed on the fixing plate 41, and the ends of the bolts 43 can be tightly abutted against the fixing plate 41. There are multiple bolts 43 on each fixing plate 41, and the bolts 43 on each fixing plate 41 are arranged along the length of the steel strip. Thus, in the initial production and installation process, by rotating the bolts 43, the limiting plate 42 can be tightly attached to both sides of the U-shaped groove of the steel strip. When the steel strip enters the seam forming roller group 2, the U-shaped groove of the steel strip is restricted by the limiting plate 42, which can resist the torsional force that may exist in the seam forming roller group 2, thereby allowing the steel strip to pass through the seam forming roller group 2 more stably and reducing the twisting of the steel strip during the seam forming process. In order to allow the U-shaped groove of the steel strip to enter the gap between the limiting plates 42 more smoothly, each of the limiting plates 42 extends outward from the end near the U-shaped forming roller group 1 with a guide surface 421, and the guide surface 421 is a funnel shape with the edge of the limiting plate 42 extending outward at an angle. The end of the limiting plate 42 near the seam forming roller group 2 extends outward to form an auxiliary clamping part 422, which can extend into and approach the contact point of the rolls of the seam forming roller group 2, thereby improving the steel strip's resistance to torsional force.
[0036] The O-forming roller assembly 3 includes a gantry 31. The fixing frame 21 extends an adjusting platform 51 towards the seam forming roller assembly 2. The O-forming roller assembly 3 has a limiting block 52 on the side near the seam forming roller assembly 2. The limiting block 52 is located directly below the adjusting platform 51. Specifically, a screw 523 extends vertically upward from the upper surface of the limiting block and can pass through the adjusting platform 51. Two adjusting nuts 524 are screwed onto the screw 523, and the adjusting nuts 524 can clamp the adjusting platform 51. The adjusting platform 51 has an elongated hole 511, through which the screw 523 can pass. The length direction of the elongated hole 511 is perpendicular to the movement direction of the steel strip. The height of the limiting block 52 is controlled by the two adjusting nuts 524, and the position of the limiting block 52 is controlled by the screw 523 and the elongated hole 511. The lower surface of the limiting pressure block 52 has a V-shaped groove, and the opening of the V-shaped groove faces the gap between the two forming rollers of the O-forming roller group 3. This allows the V-shaped groove of the limiting pressure block 52 to fit tightly against the upper side wall of the steel strip after the seam is closed, thereby providing anti-torsional force to the steel strip passing through the O-forming roller group 3 and preventing the steel strip from twisting due to uneven force during the extrusion of the roller group. Guide plates 522 are fixed on the groove wall of the V-shaped groove, and the two guide plates 522 are close to the flared opening of the groove at one end of the seam forming roller group 2.
[0037] A material distribution and collection tray (not shown in the figure) is provided directly below the powder dropping unit 6, the powder scraping unit 7 and the seam forming roller group 2 to receive any excess and scraped powder.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A steel strip U-shaped groove feeding and filling device for welding wire production, comprising a powder feeding unit, which includes a powder tank and a conveyor belt positioned below the powder tank's discharge port, wherein the steel strip U-shaped groove is located below the end of the conveyor belt, and the powder falling from the powder tank's discharge port can be conveyed onto the steel strip U-shaped groove via the conveyor belt, characterized in that: It also includes a powder scraping unit, which is placed on one side of the powder dropping unit along the direction of movement of the steel strip. The powder scraping unit includes a scraper, which includes a scraping part that can extend into the U-shaped groove of the steel strip and scraping edge parts that extend upward at an angle on both sides of the scraping part. The scraping edge parts can rest on the U-shaped groove of the steel strip.
2. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 1, characterized in that: A flexible pad is also fixed on the scraping part, and the flexible pad is placed between the steel strip U-shaped groove and the hanging part.
3. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 2, characterized in that: Each scraped edge is also fixed with multiple chucks, each chuck including a stud and a flange extending outward from the end of the stud, a nut and the stud are screwed together, the stud passing through a flexible pad and the hanging edge.
4. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 2, characterized in that: Each of the scraped edges is arc-shaped, and the edge of the U-shaped groove of the steel strip is placed inside the arc-shaped opening.
5. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 1, characterized in that: A fixing rod is fixed above the U-shaped groove of the steel strip, and the fixing rod is inserted into a sleeve. A connecting rod extends from the middle of the powder scraping unit and is fixedly connected to the sleeve.
6. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 5, characterized in that: A set screw is screwed onto the sleeve, and the end of the set screw can pass through the sleeve and press against the connecting rod.
7. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 1, characterized in that: A guide plate is provided below the end of the conveyor belt, with one end of the guide plate positioned directly below the end of the conveyor belt and the other end positioned directly above the U-shaped groove of the steel belt.
8. The U-shaped groove feeding and filling device for steel strip in welding wire production according to claim 1, characterized in that: It also includes a material collection tray, which is located directly below the powder dropping unit and the powder scraping unit.