Welding tool clamp and method special for spliced round roller

Abstract

The invention relates to a welding tool clamp and method special for a spliced round roller, 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 invention relates to a special welding fixture and method for splicing round rollers, belonging to the technical field of round roller manufacturing. Background Art

[0002] Fixtures are commonly used auxiliary tools in mechanical processing, and their main function is to position and fix parts. Spliced ​​rollers are important components used in the field of silage machinery. Spliced ​​rollers are composed of roller outer flanges at both ends, multiple roller outer guards, and multiple roller inner flanges arranged inside the multiple roller outer guards. The two ends of the roller outer guards are welded to the roller outer flanges at both ends. The roller outer guards are composed of two inner and outer plates, and their cross-section is a V-shaped structure. The inner plate is surrounded by the tangent of the outer circle. In the process of welding and manufacturing spliced ​​rollers, it is required that the inner plate of each roller outer guard is arranged with its tangent inscribed circle concentrically, and the adjacent roller outer guards must be welded evenly, and the roller outer guard and the roller inner flange must be welded evenly. In the current actual processing process, manual positioning welding is adopted, and there are problems: the welding accuracy is poor, the inscribed circles of multiple roller outer guards cannot be guaranteed to be concentrically arranged, and since the roller outer guards are not positioned, it cannot be guaranteed that each processing is the same standard. Summary of the invention

[0003] The purpose of the present invention is to provide a special welding fixture and method for splicing circular rollers, which can weld the outer guard plates of the circular rollers after positioning, ensure that the outer guard plates of each spliced ​​circular roller are placed in the same position, ensure that the inner plates of the outer guard plates of each circular roller are tangent to the inscribed circles concentrically, weld evenly between the outer guard plates of adjacent circular rollers, and weld evenly between the outer guard plates of the circular rollers and the inner flanges of the circular rollers, ensure welding accuracy, improve processing efficiency, ensure that the inscribed circles on both sides are concentric, and ensure that the spliced ​​circular rollers processed each time are of the same standard, thereby solving the above-mentioned technical problems existing in the prior art.

[0004] The technical solution of the present invention is as follows: A special welding fixture for splicing circular rollers, wherein the spliced ​​circular rollers are composed of a plurality of circular roller inner flanges and a plurality of circular roller outer guard plates, wherein the circular roller outer guard plates are composed of two inner and outer plates, and the cross section thereof is a V-shaped structure, wherein the inner plate forms a tangent line of the outer circle inside; the special welding fixture for splicing circular rollers comprises a processing fixture and a processing support device, wherein the processing fixture is arranged on the processing support device; The processing support device comprises a center positioning shaft, a deep groove ball bearing, a base plate, a bottom tray, a fixed seat base plate, a positioning pin, a fixing flange and a fixing shaft, the fixing shaft being fixed at the center of the fixed seat base plate, the fixing shaft being connected to the annular bottom tray through the deep groove ball bearing, the top of the fixing shaft being fixedly connected to the fixing flange, a center positioning shaft being arranged at the center of the fixing flange, a regular polygonal boss being arranged at the center of the annular bottom tray, the center positioning shaft passing through the center of the regular polygonal boss, the bottom tray and the regular polygonal boss rotating together around the center positioning shaft and the fixing shaft; a positioning pin is arranged on the bottom tray corresponding to the outer side of each side of the regular polygonal boss, the number of sides of the regular polygonal boss and the number of positioning pins are the same as the number of round roller outer guard plates that need to be welded, the round roller outer guard plate with a V-shaped structure is placed in the gap between the side of the regular polygonal boss and the positioning pin and is positioned, the inner plate is pressed against one side of the regular polygonal boss, and the outer plate is in contact with the positioning pin; The processing and fastening device comprises bolts, nuts, a top plate, a support plate and a bottom plate. The bottom plate and the top plate are both of the same ring shape and are connected to each other as a whole through multiple support plates and placed on the bottom tray. The bottom plate and the top plate have the same structure, and multiple nuts are evenly arranged on the upper surface. Each nut matches a bolt, and the bolts and nuts are arranged radially. The number of bolts and nuts is the same as the number of round roller outer guard plates that need to be welded. The axis of each bolt points to the same center of a circle and matches one side of a regular polygonal boss in the processing support device. The adjusting bolt will press the inner plate of the round roller outer guard plate placed in the gap between the edge of the regular polygonal boss and the locating pin onto the edge of the regular polygonal boss. The center positioning shaft is a multi-section variable-section stepped shaft body, and the diameters of each section of the center positioning shaft increase successively from top to bottom. The inner flange of the round roller is supported and fixed by the corresponding steps on the center positioning shaft.

[0005] Furthermore, a fixing seat rib plate is welded under the fixing seat bottom plate to form a load-bearing base.

[0006] Furthermore, the base plate of the fixed seat 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 base plate of the fixed seat, and the upper end of the fixed shaft is sleeved into the deep groove ball bearing sleeve.

[0007] Furthermore, there are grooves above and below the central circular hole of the annular bottom tray. The lower groove is sleeved on the deep groove ball bearing, and the upper groove fixing flange is embedded in it. There is a central positioning shaft embedded in the center of the fixing flange. A reinforcement base plate is welded under the bottom tray and outside the deep groove ball bearing to reinforce it. The positioning pin is inserted into the circular hole on the bottom tray. The above structures are all manufactured by welding assembly and then machining.

[0008] A method for welding spliced ​​circular rollers, using the above-mentioned special welding fixture, includes the following steps: supporting and fixing the two circular roller inner flanges respectively through the corresponding steps on the central positioning shaft; placing the circular roller outer guard plate of the V-shaped structure into the gap between the edge of the regular polygonal boss and the positioning pin, with the inner plate of the circular roller outer guard plate close to one edge of the regular polygonal boss, and the outer plate of the circular roller outer guard plate close to the positioning pin; adjusting the bolts on the bottom plate to press the inner plate of the circular roller outer guard plate against one edge of the regular polygonal boss; adjusting the bolts on the top plate to support and position the upper part of the circular roller outer guard plate, and pressing the circular roller outer guard plate close to the circular roller inner flange to ensure that the inscribed circles of the inner plates of each circular roller outer guard plate are concentric during the spliced ​​circular roller welding process; rotating the bottom tray to complete the welding between the circular roller outer guard plate and the circular roller inner flange.

[0009] Furthermore, the outer plate of the circular roller outer guard plate is tightly attached to the positioning pin, and the inner plate is tightly attached to the regular polygonal boss in the center of the bottom tray. It is fastened by bolts on the bottom plate to position the circular roller outer guard plate, ensuring that each time the circular roller is spliced, the same standard parts are used, thereby improving the accuracy of the spliced ​​circular roller production and improving the processing efficiency.

[0010] The present invention places the outer guard plate of the circular roller close to the inner flange of the circular roller, ensuring that the inner plate of each outer guard plate of the circular roller is tangent to the concentric inscribed circle during the welding process of the spliced ​​circular rollers, reducing the time cost consumed by manual pressing and avoiding the quality defect of the inscribed circle being non-concentric due to manual operation, thereby improving the processing efficiency and processing accuracy. The outer plate of the outer guard plate of the circular roller is placed close to the positioning pin, and the inner plate is placed close to the regular polygonal boss at the center of the bottom tray, ensuring that the position of the outer guard plate of the circular roller is the same each time the circular rollers are spliced, and fastened by bolts on the bottom plate to ensure processing accuracy. During the process of splicing the circular rollers, the outer guard plate of the circular roller is rotated according to the processing order, which improves the processing efficiency, reduces the complexity of the welding work, and ensures uniform welding between the outer guard plate of the circular roller and the inner flange of the circular roller.

[0011] The positive effects of the present invention are as follows: the outer guard plates of the round rollers are positioned and then welded, ensuring that the outer guard plates of each round roller are placed in the same position, ensuring that the inner plates of the outer guard plates of each round roller have concentric inscribed circles, the outer guard plates of adjacent round rollers are welded evenly, the outer guard plates of the round rollers are welded evenly to the inner flanges of the round rollers, ensuring welding accuracy, improving processing efficiency of personnel, ensuring that the inscribed circles on both sides are concentric, and ensuring that the spliced ​​round rollers processed each time are of the same standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A top view of an embodiment of the present invention; Figure 2 It is a front view of an embodiment of the present invention; Figure 3 It is a cross-sectional view of an embodiment of the present invention; Figure 4 A three-dimensional top view of an embodiment of the present invention; Figure 5 This is a bottom tray positioning diagram of an embodiment of the present invention; Figure 6 This is a cross-sectional view of a round roller according to an embodiment of the present invention; In the figure: center positioning shaft 1, bolts 2, nuts 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, reinforced bottom plate 11, positioning pin 12, fixed flange 13, fixed shaft 14, spliced ​​round roller 15, round roller inner flange 151, round roller outer guard plate 152, regular polygonal boss 16, step 17. DETAILED DESCRIPTION

[0013] The present invention is further described in detail by the following examples.

[0014] Combined with Figure 1-6 This embodiment provides a special welding fixture for splicing round rollers. The spliced ​​round roller 15 is composed of multiple round roller inner flanges 151 and multiple round roller outer guard plates 152. The round roller outer guard plate 152 is composed of two inner and outer plates. Its cross-section is a V-shaped structure, and the inner plate forms a tangent of the outer circle inside; the special welding fixture for splicing round rollers includes a processing fixture and a processing support device, and the processing fixture is arranged on the processing support device.

[0015] The processing support device comprises a center positioning shaft 1, a deep groove ball bearing 6, a base 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 center positioning shaft 1. The center of the annular bottom tray 8 is provided with a regular polygonal boss 16. The center positioning shaft 1 is provided from the regular polygonal boss 16 passes through the center, and the bottom tray 8 and the regular polygonal boss 16 rotate together around the central positioning axis 1 and the fixed axis 14; a positioning pin 12 is provided on the bottom tray 8 corresponding to the outer side of each side of the regular polygonal boss 16, and the number of sides of the regular polygonal boss 16 and the number of positioning pins 12 are the same as the number of round roller outer guard plates 152 that need to be welded, and the round roller outer guard plates 152 with a V-shaped structure are placed in the gap between the side of the regular polygonal boss 16 and the positioning pin 12 and are positioned, the inner plate is close to one side of the regular polygonal boss 16, and the outer plate is in contact with the positioning pin 12.

[0016] The processing and fastening device comprises 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 of the same ring shape and are connected to each other as a whole through multiple support plates 5 and placed on the bottom tray 8. The bottom plate 7 and the top plate 4 have the same structure, and multiple nuts 3 are evenly arranged on the upper surface, each nut 3 matches a bolt 2, and the bolts 2 and nuts 3 are arranged radially. The number of bolts 2 and nuts 3 is the same as the number of round roller outer guard plates 152 that need to be welded. The axis of each bolt 2 points to the same center of a circle and matches one side of the regular polygonal boss 16 in the processing support device. The adjusting bolt 2 will press the inner plate of the round roller outer guard plate 152 placed in the gap between the edge of the regular polygonal boss 16 and the locating pin 12 against the edge of the regular polygonal boss 16; the center positioning shaft 1 is a multi-section variable-section stepped shaft body, and the diameters of each section of the center positioning shaft 1 increase from top to bottom, and the inner flange of the round roller is supported and fixed by the corresponding step 17 on the center positioning shaft 1.

[0017] The fixing seat rib plate 9 is welded below the fixing seat bottom plate 10 to form a load-bearing base.

[0018] In the embodiment, the regular polygonal boss 16 is a regular thirteen-sided boss, the number of the round roller outer guard plates 152 is thirteen, and the number of the positioning pins 12 is thirteen.

[0019] The fixing seat bottom plate 10 is provided with a central circular hole, the middle part of the fixing shaft 14 is provided with an annular protrusion, the lower end of the fixing shaft 14 is inserted into the central circular hole of the fixing seat bottom plate 10, and the upper end of the fixing shaft 14 is sleeved into the deep groove ball bearing sleeve 6.

[0020] The annular bottom tray 8 has grooves on the upper and lower sides of the central circular hole. The lower groove is sleeved on the deep groove ball bearing 6, and the upper groove fixing flange 13 is embedded in it. The fixing flange 13 has a central positioning shaft 1 embedded in the center. A reinforcement base plate 11 is welded below the bottom tray 8 and outside the deep groove ball bearing 6 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.

[0021] The outer plate of the circular roller outer guard plate 152 is tightly attached to the positioning pin 12, and the inner plate is tightly attached to the regular polygonal boss 16 in the center of the bottom tray 8. It is fastened by the bolts 2 on the bottom plate 7 to position the circular roller outer guard plate 152, ensuring that each time the circular rollers are spliced, the same standard parts are used, thereby improving the precision of the spliced ​​circular rollers and improving the processing efficiency.

[0022] The deep groove ball bearing 6 enables the upper part of the processing support device to rotate with the processing fastening device, and rotates according to the processing sequence, so that the welding is more uniform and the processing is convenient.

[0023] A method for welding spliced ​​round rollers, using the above-mentioned special welding fixture, includes the following steps: supporting and fixing the two inner flanges of the round rollers respectively through the corresponding steps 17 on the central positioning shaft 1; placing the round roller outer guard plate 152 of the V-shaped structure into the gap between the edge of the regular polygonal boss 16 and the positioning pin 12, the inner plate of the round roller outer guard plate 152 is close to one edge of the regular polygonal boss 16, and the outer plate of the round roller outer guard plate 152 is close to the positioning pin 12; adjusting the bolts 2 on the bottom plate 7 to press the inner plate of the round roller outer guard plate 152 against one edge of the regular polygonal boss 16; adjusting the bolts on the top plate 4 to support and position the upper part of the round roller outer guard plate 152, and pressing the round roller outer guard plate 151 against the round roller inner flange 152 to ensure that the inner plates of each round roller outer guard plate 151 are concentric with the inscribed circles during the welding process of the round roller 15; rotating the bottom tray 8 to complete the welding between the round roller outer guard plate 151 and the round roller inner flange 152.

Claims

1. A special welding fixture for splicing circular rollers, wherein the spliced ​​circular rollers (15) are composed of a plurality of circular roller inner flanges (151) and a plurality of circular roller outer guard plates (152), wherein the circular roller outer guard plates (152) are composed of two inner and outer plates, and the cross section thereof is a V-shaped structure, wherein the inner plate forms a tangent line of the outer circle inside; the characteristics are: The special welding fixture for splicing circular rollers comprises a processing fixture and a processing support device, and the processing fixture is arranged on the processing support device; The processing support device comprises a center positioning shaft (1), a deep groove ball bearing (6), a base 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 center positioning shaft (1); the center of the annular bottom tray (8) is provided with a regular polygonal boss (16); the center positioning shaft (1) extends from the regular polygonal boss (16) to the fixed flange (13); The center of the polygonal boss (16) passes through, and the bottom tray (8) and the regular polygonal boss (16) rotate together around the central positioning axis (1) and the fixed axis (14); a positioning pin (12) is provided on the bottom tray (8) corresponding to the outer side of each side of the regular polygonal boss (16); the number of sides of the regular polygonal boss (16) and the number of positioning pins (12) are the same as the number of round roller outer guard plates (152) to be welded; the round roller outer guard plates (152) with a V-shaped structure are placed in the gap between the side of the regular polygonal boss (16) and the positioning pins (12) to be positioned, the inner plate is close to one side of the regular polygonal boss (16), and the outer plate is in contact with the positioning pins (12); The processing and fastening device comprises 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 of the same ring shape and are connected to each other via a plurality of support plates (5) as a whole and are placed on a bottom tray (8). The bottom plate (7) and the top plate (4) have the same structure, and a plurality of nuts (3) are evenly arranged on the upper surface. Each nut (3) matches a bolt (2). The bolts (2) and nuts (3) are arranged radially. The number of bolts (2) and nuts (3) is the same as the number of the outer guard plate (152) of the round roller to be welded. ) are the same in number, the axis of each bolt (2) points to the same center of a circle and matches one side of a regular polygonal boss (16) in the processing support device, and the adjusting bolt (2) is inserted into the gap between the side of the regular polygonal boss (16) and the positioning pin (12) and the inner plate of the roller outer guard plate (152) is pressed against the side of the regular polygonal boss (16); the center positioning shaft (1) is a multi-section variable cross-section stepped shaft body, and the diameter of each section of the center positioning shaft (1) increases from top to bottom, and the inner flange (151) of the roller is supported and fixed by the corresponding step (17) on the center positioning shaft (1).

2. The special welding fixture for splicing round rollers according to claim 1 is characterized in that: A fixing seat rib plate (9) is welded below the fixing seat bottom plate (10) to form a load-bearing base.

3. The special welding fixture for splicing round rollers according to claim 2 is characterized in that: The fixing seat bottom plate (10) is provided with a central circular hole, the middle part of the fixing shaft (14) is provided with an annular protrusion, the lower end of the fixing shaft (14) is inserted into the central circular hole of the fixing seat bottom plate (10), and the upper end of the fixing shaft (14) is inserted into the deep groove ball bearing sleeve (6).

4. The special welding fixture for splicing round rollers according to claim 3 is characterized in that: The annular bottom tray (8) has grooves at the top and bottom of the central circular hole. The bottom groove is sleeved on the deep groove ball bearing (6), and the top groove fixing flange (13) is embedded therein. A center positioning shaft (1) is embedded in the center of the fixed flange (13), a reinforcement base plate (11) is welded below the bottom tray (8) and outside the deep groove ball bearing (6), and a positioning pin (12) is inserted into a circular hole on the bottom tray (8).

5. A method for welding spliced ​​circular rollers, using a special welding fixture for splicing circular rollers as described in any one of claims 1 to 4, comprising the following steps: supporting and fixing multiple circular roller inner flanges (151) respectively through corresponding steps (17) on the central positioning shaft (1); placing a circular roller outer guard plate (152) with a V-shaped structure into a gap between an edge of a regular polygonal boss (16) and a positioning pin (12), with an inner plate of the circular roller outer guard plate (152) pressed against one edge of the regular polygonal boss (16), and an outer plate of the circular roller outer guard plate (152) pressed against the positioning pin (12). ; Adjust the bolts (2) on the bottom plate (7) to press the inner plate of the roller outer guard plate (152) against one side of the regular polygonal boss (16); Adjust the bolts (2) on the top plate (4) to support and position the upper part of the roller outer guard plate (152), and place the roller outer guard plate (151) close to the roller inner flange (152) to ensure that the inner plates of each roller outer guard plate (151) are tangent to the inner circles of the rollers during the welding process of the spliced ​​rollers (15); Rotate the bottom tray (8) to complete the welding between the roller outer guard plate (151) and the roller inner flange (152).

6. A method for welding spliced ​​circular rollers according to claim 5, characterized in that: The outer plate of the circular roller outer guard plate (152) is tightly attached to the positioning pin (12), and the inner plate is tightly attached to the regular polygonal boss (16) at the center of the bottom tray (8). The circular roller outer guard plate (152) is positioned by fastening with bolts (2) on the bottom plate (7) to ensure that the same standard parts are used for each splicing of circular rollers.

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