Special tool for welding and splicing round rollers

Abstract

The utility model relates to a special tool for welding and splicing round rollers, and belongs to the technical field of round roller manufacturing. According to the technical scheme, the special welding tool clamp for the spliced round roller comprises a machining fixing device and a machining supporting device, and a round roller outer protection plate is placed in a gap between the edge of a regular polygon boss and a positioning pin to be positioned; the adjusting bolts press the inner plate of the round roller outer protection plate placed in the gap between the edge of the regular polygon boss and the locating pin to the edge of the regular polygon boss, and the round roller inner flange is supported and fixed through a corresponding step on the center locating shaft. Round roller outer protection plates are welded after being positioned, it is guaranteed that the placement positions of the round roller outer protection plates of all spliced round rollers are the same, it is guaranteed that the tangent inscribed circles of inner plates of all the round roller outer protection plates are concentric, welding between the adjacent round roller outer protection plates is uniform, welding between the round roller outer protection plates and round roller inner flanges is uniform, and the welding precision is guaranteed; the machining efficiency of workers is improved, and inscribed circles on the two sides can be concentric.

Description

Technical Field

[0001] The utility model relates to a special tool for welding and splicing circular rollers, belonging to the technical field of circular roller manufacturing. Background Art

[0002] A fixture is a commonly used auxiliary tool in machining, and its main function is to position and fix parts. The spliced circular roller is an important component used in the field of silage machinery. The spliced circular roller is composed of circular roller outer flanges at both ends, multiple circular roller outer guard plates, and multiple circular roller inner flanges arranged inside the multiple circular roller outer guard plates. Both ends of the circular roller outer guard plates are respectively welded to the circular roller outer flanges at both ends. The circular roller outer guard plate is composed of two inner and outer plates, and its cross-section is a V-shaped structure. The inner plate is tangent to the inner circle of the outer circle formed inside. During the process of welding and manufacturing the spliced circular roller, it is required that the inner circles tangent to the inner plates of each arranged circular roller outer guard plate are concentric, the welding between adjacent circular roller outer guard plates is uniform, and the welding between the circular roller outer guard plate and the circular roller inner flange is uniform. In the current actual processing process, the manual alignment welding method is adopted, and the problems are: the welding accuracy is poor, the inner circles of multiple circular roller outer guard plates cannot be guaranteed to be concentrically arranged, and since the circular roller outer guard plates are not positioned, it cannot be guaranteed that each processing is in the same standard. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a special tool for welding and splicing circular rollers, which welds after positioning the circular roller outer guard plates, ensures that the placement positions of the circular roller outer guard plates of each spliced circular roller are the same, ensures that the inner circles tangent to the inner plates of each circular roller outer guard plate are concentric, the welding between adjacent circular roller outer guard plates is uniform, and the welding between the circular roller outer guard plate and the circular roller inner flange is uniform, guarantees the welding accuracy, improves the processing efficiency, can ensure that the inner circles on both sides are concentric, and ensures that each processed spliced circular roller is in the same standard, and solves the above technical problems existing in the prior art.

[0004] The technical solution of the utility model is as follows:

[0005] A special welding fixture for splicing circular rollers. The splicing circular roller is composed of multiple circular roller inner flanges and multiple circular roller outer guard plates. The two ends of the circular roller outer guard plate are respectively welded to the circular roller inner flanges at both ends. The circular roller outer guard plate is composed of two inner and outer plates, and its cross-section is a V-shaped structure. The inner plate forms a tangent to the outer circle inside. The special welding fixture for splicing circular rollers includes a processing fixing device and a processing support device. The processing fixing device is arranged on the processing support device. The processing support device includes a center positioning shaft, a deep groove ball bearing, a bottom plate, a bottom tray, a fixed seat bottom plate, a positioning pin, a fixed flange and a fixed shaft. The fixed shaft is fixed at the center of the fixed seat bottom plate. The fixed shaft is connected to the annular bottom tray through a deep groove ball bearing. The top of the fixed shaft is fixedly connected to the fixed flange. The center of the fixed flange is provided with a center positioning shaft. The center of the annular bottom tray is provided with a regular polygon boss. The center positioning shaft passes through the center of the regular polygon boss. The bottom tray and the regular polygon boss rotate together around the center positioning shaft and the fixed shaft. Positioning pins are arranged on the bottom tray corresponding to the outside of each side of the regular polygon boss. The number of sides of the regular polygon boss and the number of positioning pins are the same as the number of circular roller outer guard plates to be welded. The V-shaped circular roller outer guard plate is positioned in the gap between the side of the regular polygon boss and the positioning pin. The inner plate is pressed against one side of the regular polygon boss, and the outer plate contacts the positioning pin.

[0006] Further, the processing fixing device includes bolts, nuts, a top plate, a support plate and a bottom plate. Both the bottom plate and the top plate are the same ring shape and are connected into a whole through multiple support plates and placed on the bottom tray. The structures on the bottom plate and the top plate are the same. A plurality of nuts are evenly arranged on the upper surface. Each nut matches a bolt. The bolts and nuts are arranged radially. The number of bolts and nuts is the same as the number of circular roller outer guard plates to be welded. The axis of each bolt points to the same center of the circle and matches one side of the regular polygon boss in the processing support device. By adjusting the bolts, the inner plate of the circular roller outer guard plate placed in the gap between the side of the regular polygon boss and the positioning pin is pressed against the side of the regular polygon boss. The center positioning shaft is a multi-section stepped shaft with variable cross-sections. The diameters of each section of the center positioning shaft increase sequentially from top to bottom. The circular roller inner flange is supported and fixed through the corresponding steps on the center positioning shaft.

[0007] Further, a fixed seat rib plate is welded under the fixed seat bottom plate to form a load-bearing base.

[0008] Further, the fixed seat bottom plate is provided with a central circular hole. The middle part of the fixed shaft is provided with an annular protrusion. The lower end of the fixed shaft is inserted into the central circular hole of the fixed seat bottom plate, and the upper end of the fixed shaft is sleeved with a deep groove ball bearing.

[0009] Further, there are grooves both above and below the central circular hole of the annular bottom tray. The lower groove is sleeved on a deep groove ball bearing, and a fixing flange is embedded in the upper groove. A central positioning shaft is embedded in the center of the fixing flange. A reinforcing bottom plate is welded outside the deep groove ball bearing below the bottom tray for reinforcement. A positioning pin is inserted into the circular hole on the bottom tray. The above structures are all machined after being assembled by welding.

[0010] The inner flanges of the two round rollers are respectively supported and fixed through the corresponding steps on the central positioning shaft; the outer guard plate of the round roller with a V-shaped structure is placed in the gap between the side of the regular polygon convex platform and the positioning pin. The inner plate of the outer guard plate of the round roller is closely attached to one side of the regular polygon convex platform, and the outer plate of the outer guard plate of the round roller is closely attached to the positioning pin; the bolts on the bottom plate are adjusted to press the inner plate of the outer guard plate of the round roller against one side of the regular polygon convex platform; the bolts on the top plate are adjusted to support and position the upper part of the outer guard plate of the round roller, and the outer guard plate of the round roller is closely attached to the inner flange of the round roller to ensure that the inscribed circles of the inner plates of each outer guard plate of the round roller are concentric during the welding process of the spliced round roller; the bottom tray is rotated to complete the welding between the outer guard plate of the round roller and the inner flange of the round roller.

[0011] The outer plate of the outer guard plate of the round roller is closely attached to the positioning pin, and the inner plate is closely attached to the regular polygon convex platform at the center of the bottom tray. It is fastened through the bolts on the bottom plate to position the outer guard plate of the round roller, ensuring that each spliced round roller produced is the same standard part, improving the precision of the production of the spliced round roller and the processing efficiency.

[0012] In the utility model, the outer guard plate of the round roller is closely attached to the inner flange of the round roller, ensuring that the inscribed circles of the inner plates of each outer guard plate of the round roller are concentric during the welding process of the spliced round roller, reducing the time cost consumed by manual close attachment and avoiding the quality defect of non-concentric inscribed circles caused by manual operation, improving the processing efficiency and processing precision. The outer plate of the outer guard plate of the round roller is closely attached to the positioning pin, and the inner plate is closely attached to the regular polygon convex platform at the center of the bottom tray, ensuring that the position of the outer guard plate of the round roller is the same each time when the spliced round roller is produced, and is fastened through the bolts on the bottom plate to ensure the processing precision. During the processing of the spliced round roller, it rotates according to the processing sequence, improving the processing efficiency, reducing the complexity of the welding work, and ensuring uniform welding between the outer guard plate of the round roller and the inner flange of the round roller.

[0013] The positive effects of the utility model: After positioning the outer guard plate of the round roller for welding, ensuring that the placement positions of the outer guard plates of each spliced round roller are the same, ensuring that the inscribed circles of the inner plates of each outer guard plate are concentric, uniform welding between adjacent outer guard plates of the round roller, and uniform welding between the outer guard plate of the round roller and the inner flange of the round roller, ensuring the welding precision, improving the processing efficiency of personnel, being able to ensure the concentricity of the inscribed circles on both sides, and ensuring that each processed spliced round roller is of the same standard. Description of the Drawings

[0014] Figure 1Top view of the embodiment of the present utility model;

[0015] Figure 2 Front view of the embodiment of the present utility model;

[0016] Figure 3 Sectional view of the embodiment of the present utility model;

[0017] Figure 4 Top view three-dimensional view of the embodiment of the present utility model;

[0018] Figure 5 Positioning diagram of the bottom tray of the embodiment of the present utility model;

[0019] Figure 6 Sectional view of the round roller of the embodiment of the present invention;

[0020] In the figure: central positioning shaft 1, bolt 2, nut 3, top plate 4, support plate 5, deep groove ball bearing 6, bottom plate 7, bottom tray 8, fixed seat rib plate 9, fixed seat bottom plate 10, reinforcement bottom plate 11, positioning pin 12, fixed flange 13, fixed shaft 14, spliced round roller workpiece 15, round roller inner flange 151, round roller outer guard plate 152, regular polygon convex platform 16, step 17. Specific implementation manners

[0021] The present utility model will be further elaborated in detail through the following embodiments.

[0022] Combined with the attached Figures 1-6, this embodiment provides a special tooling for welding and splicing circular rollers. The spliced circular roller 15 is composed of a plurality of circular roller inner flanges 151 and a plurality of circular roller outer guard plates 152. Both ends of the circular roller outer guard plate 152 are welded to the circular roller inner flanges 151 at both ends. The circular roller outer guard plate 152 is composed of two inner and outer plates, and its cross-section is a V-shaped structure. The inner plate forms a tangent to the outer circle inside. The special welding tooling fixture for the spliced circular roller includes a processing fixing device and a processing support device. The processing fixing device is arranged on the processing support device. The processing support device includes a central positioning shaft 1, a deep groove ball bearing 6, a bottom plate 7, a bottom tray 8, a fixed seat bottom plate 10, a positioning pin 12, a fixed flange 13 and a fixed shaft 14. The fixed shaft 14 is fixed at the center of the fixed seat bottom plate 10. The fixed shaft 14 is connected to the annular bottom tray 8 through the deep groove ball bearing 6. The top of the fixed shaft 14 is fixedly connected to the fixed flange 13. The center of the fixed flange 13 is provided with a central positioning shaft 1. The center of the annular bottom tray 8 is provided with a regular polygon boss 16. The central positioning shaft 1 passes through the center of the regular polygon boss 16. The bottom tray 8 and the regular polygon boss 16 rotate together around the central positioning shaft 1 and the fixed shaft 14. Positioning pins 12 are provided on the bottom tray 8 corresponding to the outside of each side of the regular polygon boss 16. The number of sides of the regular polygon boss 16 and the number of positioning pins 12 are the same as the number of circular roller outer guard plates 152 to be welded. The V-shaped circular roller outer guard plate 152 is positioned in the gap between the side of the regular polygon boss 16 and the positioning pin 12. The inner plate is pressed against one side of the regular polygon boss 16, and the outer plate contacts the positioning pin 12.

[0023] The processing fixing device includes bolts 2, nuts 3, a top plate 4, a support plate 5 and a bottom plate 7. Both the bottom plate 7 and the top plate 4 are the same ring shape, and are connected into a whole through a plurality of support plates 5 and placed on the bottom tray 8. The structures on the bottom plate 7 and the top plate 4 are the same. A plurality of nuts 3 are evenly arranged on the upper surface. Each nut 3 is matched with a bolt 2. The bolts 2 and the nuts 3 are arranged radially. The number of bolts 2 and the nuts 3 is the same as the number of circular roller outer guard plates 152 to be welded. The axis of each bolt 2 points to the same center of the circle and matches one side of the regular polygon boss 16 in the processing support device. By adjusting the bolts 2, the inner plate of the circular roller outer guard plate 152 placed in the gap between the side of the regular polygon boss 16 and the positioning pin 12 is pressed against the side of the regular polygon boss 16. The central positioning shaft 1 is a multi-section stepped shaft body with variable cross-sections. The diameters of each section of the central positioning shaft 1 increase sequentially from top to bottom. The circular roller inner flange is supported and fixed by the corresponding step 17 on the central positioning shaft 1.

[0024] A fixed seat rib plate 9 is welded under the fixed seat bottom plate 10 to form a load-bearing base.

[0025] In the embodiment, the regular polygon boss 16 is a regular thirteen-sided polygon boss, the number of circular roller outer guard plates 152 is thirteen, and the number of positioning pins 12 is thirteen.

[0026] The fixed base bottom plate 10 is provided with a central circular hole. The middle part of the fixed shaft 14 is provided with an annular protrusion. The lower end of the fixed shaft 14 is inserted into the central circular hole of the fixed base bottom plate 10, and the upper end of the fixed shaft 14 is sleeved with a deep groove ball bearing 6.

[0027] Both the upper and lower parts of the central circular hole of the annular bottom tray 8 are provided with grooves. The lower groove is sleeved on the deep groove ball bearing 6, and the fixing flange 13 is embedded in the upper groove. The central positioning shaft 1 on the fixing flange 13 is embedded in the center. A reinforcing bottom plate 11 is welded outside the deep groove ball bearing 6 below the bottom tray 8 for reinforcement. The positioning pin 12 is inserted into the circular hole on the bottom tray 8. The above structures are all processed by welding.

[0028] The outer plate of the circular roller outer guard plate 152 is closely attached to the positioning pin 12, and the inner plate is closely attached to the regular polygon convex platform 16 at the center of the bottom tray 8. It is fastened by the bolt 2 on the bottom plate 7 to position the circular roller outer guard plate 152, ensuring that each spliced circular roller is made of the same standard parts, improving the precision of the spliced circular roller manufacturing and the processing efficiency.

[0029] The deep groove ball bearing 6 enables the upper part of the processing support device to rotate with the processing fixing device and rotate according to the processing sequence, making the welding more uniform and facilitating processing.

[0030] The two circular roller inner flanges are respectively supported and fixed through the corresponding steps 17 on the central positioning shaft 1; the circular roller outer guard plate 152 with a V-shaped structure is placed in the gap between the side of the regular polygon convex platform 16 and the positioning pin 12. The inner plate of the circular roller outer guard plate 152 is closely attached to one side of the regular polygon convex platform 16, and the outer plate of the circular roller outer guard plate 152 is closely attached to the positioning pin 12; adjust the bolt 2 on the bottom plate 7 to press the inner plate of the circular roller outer guard plate 152 against one side of the regular polygon convex platform 16; adjust the bolt on the top plate 4 to support and position the upper part of the circular roller outer guard plate 152, and closely attach the circular roller outer guard plate 151 to the circular roller inner flange 152 to ensure that the inscribed circles tangent to the inner plates of each circular roller outer guard plate 151 are concentric during the welding process of the assembled circular roller 15; rotate the bottom tray 8 to complete the welding between the circular roller outer guard plate 151 and the circular roller inner flange 152.

Claims

1. A special tooling for welding and splicing circular rollers. The spliced circular roller (15) is composed of multiple circular roller inner flanges (151) and multiple circular roller outer guard plates (152). The circular roller outer guard plate (152) is composed of two inner and outer plates, and its cross-section is a V-shaped structure. The inner plate forms a tangent to the outer circle on the inside; characterized in that: The special welding tooling fixture for splicing round rollers includes a processing and fixing device and a processing and supporting device. The processing and fixing device is arranged on the processing and supporting device. The processing and supporting device includes a central positioning shaft (1), a deep groove ball bearing (6), a bottom plate (7), a bottom tray (8), a fixed seat bottom plate (10), a positioning pin (12), a fixed flange (13) and a fixed shaft (14). The fixed shaft (14) is fixed at the center of the fixed seat bottom plate (10). The fixed shaft (14) is connected to the annular bottom tray (8) through the deep groove ball bearing (6). The top of the fixed shaft (14) is fixedly connected to the fixed flange (13). The central positioning shaft (1) is arranged at the center of the fixed flange (13). A regular polygon boss (16) is arranged at the center of the annular bottom tray (8). The central positioning shaft (1) passes through the center of the regular polygon boss (16). The bottom tray (8) and the regular polygon boss (16) rotate around the central positioning shaft (1) and the fixed shaft (14) together. Positioning pins (12) are arranged on the bottom tray (8) corresponding to the outside of each side of the regular polygon boss (16). The number of sides of the regular polygon boss (16) and the number of positioning pins (12) are the same as the number of outer guard plates (152) of the round roller to be welded. The V-shaped outer guard plate (152) of the round roller is placed in the gap between the side of the regular polygon boss (16) and the positioning pin (12) for positioning. The inner plate is pressed against one side of the regular polygon boss (16), and the outer plate contacts the positioning pin (12).

2. The special tooling for welding and splicing circular rollers according to claim 1, wherein: The processing and fixing device includes bolts (2), nuts (3), a top plate (4), a support plate (5) and a bottom plate (7). The bottom plate (7) and the top plate (4) are both the same ring shape and are connected into a whole through multiple support plates (5) and placed on the bottom tray (8). The structures on the bottom plate (7) and the top plate (4) are the same. A plurality of nuts (3) are evenly arranged on the upper surface. Each nut (3) matches a bolt (2). The bolts (2) and the nuts (3) are arranged radially. The number of bolts (2) and the number of nuts (3) are the same as the number of outer guard plates (152) of the round roller to be welded. The axis of each bolt (2) points to the same center of the circle and matches one side of the regular polygon boss (16) in the processing and supporting device. By adjusting the bolts (2), the inner plate of the outer guard plate (152) of the round roller placed in the gap between the side of the regular polygon boss (16) and the positioning pin (12) is pressed against the side of the regular polygon boss (16). The central positioning shaft (1) is a multi-section stepped shaft with variable cross-sections. The diameters of each section of the central positioning shaft (1) increase sequentially from top to bottom. The round roller inner flange (151) is supported and fixed through the corresponding step (17) on the central positioning shaft (1).

3. The special tooling for welding and splicing circular rollers according to claim 1, characterized in that: A fixed seat rib plate (9) is welded under the fixed seat bottom plate (10) to form a load-bearing base.

4. A special tooling for welding and splicing circular rollers according to claim 1, characterized in that: The fixed seat bottom plate (10) is provided with a central circular hole. The middle part of the fixed shaft (14) is provided with an annular protrusion. The lower end of the fixed shaft (14) is inserted into the central circular hole of the fixed seat bottom plate (10), and the upper end of the fixed shaft (14) is sleeved with the deep groove ball bearing (6).

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