Impeller positioning welding tool and impeller positioning welding process

Abstract

The present invention relates to the field of mechanical processing and manufacturing, and specifically to an impeller positioning welding tool and an impeller positioning welding process, characterized in that: it includes a base plate, a main shaft is provided at the center of the base plate, a first positioning plate for positioning the base, a second positioning plate for positioning the reinforcing ring, a first positioning plate for positioning the conical tube, and a second positioning plate for positioning the circular tube are sleeved on the main shaft, the reinforcing ring is supported by a pad placed on the base, a third positioning plate is provided on the base plate, a first positioning block is provided on the third positioning plate, a second positioning block is provided on the first positioning plate, the first positioning block positions the blades by the second positioning block, and a first wedge block mechanism for clamping the second positioning plate and a second wedge block mechanism for clamping the first positioning plate and the second positioning plate are provided on the main shaft. The overall structure of the present invention is simple and practical, can improve the overall splicing efficiency of the impeller, has high positioning accuracy and small error, reduces eccentricity, and ensures the stability of the impeller during operation.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing and manufacturing, and in particular to an impeller positioning welding tool and an impeller positioning welding process. Background Art

[0002] The impeller is usually installed on the shaft head at the upper end of the main shaft assembly, and the pitch is transmitted by a tapered sleeve and a key connection. It rotates at high speed. The impeller is a key component of the vertical impact crusher. The material enters the center of the impeller from the central feed pipe of the impeller upper feeder, and the material is evenly distributed to each launch channel of the impeller by the distribution cone in the center of the impeller. A wear-resistant block made of special material is installed at the outlet of the launch channel, which can be replaced. The impeller accelerates the material to a speed of 60-75m / s and ejects it.

[0003] The impeller rotates at high speed when working, and the blades will be eccentric when they are welded. The smaller the eccentricity, the smoother the operation. Usually multiple blades need to be welded on the impeller, and each blade needs to be positioned separately. The positioning of the blades on the original impeller is done by drawing lines, resulting in low positioning accuracy and a manufacturing error of about 2mm. It is also impossible to ensure equal division and control of internal and external dimensions, which results in a large eccentricity of the impeller and very unstable operation. It takes more time to dynamically balance the impeller, and the overall quality of the manufactured impeller is poor. In addition, due to the slow positioning speed of the blades, the overall welding efficiency of the impeller is slow. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an impeller positioning welding tooling with a simple and practical overall structure, which can improve the overall splicing efficiency of the impeller, have high positioning accuracy and small error, reduce eccentricity, and ensure the stability of the impeller during operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: an impeller positioning welding tool, comprising a base plate, a main shaft is detachably provided at the center of the base plate, a first positioning plate for positioning the impeller base, a second positioning plate for positioning the impeller reinforcement ring, a first positioning plate for positioning the impeller conical tube and a second positioning plate for positioning the impeller circular tube are detachably provided on the main shaft, the reinforcement ring is supported by a plurality of pads placed on the base, a third positioning plate is provided on the base plate, a plurality of first positioning blocks are provided on the third positioning plate, a second positioning block consistent with the number of the first positioning blocks is provided on the first positioning plate, the first positioning block positions the impeller blades by cooperating with the corresponding second positioning block, and a first wedge block mechanism for clamping the second positioning plate and a second wedge block mechanism for clamping the first positioning plate and the second positioning plate are also provided on the main shaft.

[0006] Furthermore, the bottom plate is circular in shape, the center of the upper end of the bottom plate is recessed inwardly and forms a circular groove, the edge of the upper end of the bottom plate is recessed inwardly and forms an annular groove, the third positioning plate is annular in shape and embedded in the annular groove, a first positioning key is also provided between the third positioning plate and the annular groove, the lower end surface of the first positioning plate protrudes outwardly and forms a first annular protrusion for positioning the base, the outer diameter of the first annular protrusion is adapted to the inner diameter of the circular groove, the first annular protrusion can be embedded in the circular groove and a gap for accommodating the base is formed between the lower end surface of the first positioning plate and the upper end surface of the bottom plate, a second positioning key is also provided between the first annular protrusion and the circular groove, the first positioning plate, the second positioning plate, the first positioning plate and the second positioning plate are all circular in shape, and the central axes of the first positioning plate, the second positioning plate, the third positioning plate, the first positioning plate and the second positioning plate all coincide with the central axis of the main shaft.

[0007] Furthermore, the first wedge block mechanism includes a first wedge block and a first wedge-shaped groove opened on the main shaft. The main shaft is detachably provided with a first sleeve placed on the first positioning plate and used to support the second positioning plate. The first sleeve is clearance-matched with the main shaft, and the first wedge block can be inserted into the first wedge-shaped groove and clamp the second positioning plate.

[0008] Furthermore, the inner edge of the upper end of the third positioning disk protrudes outward and forms a first annular positioning protrusion, and the upper end surface of the third positioning disk is evenly provided with first positioning grooves consistent with the number of the first positioning blocks along the circumferential direction of the main axis. The lower end surface of the first positioning block protrudes outward and forms a first positioning protrusion adapted to the first positioning groove, and the first positioning protrusion can be engaged with the first positioning groove.

[0009] Furthermore, the first positioning block is L-shaped, and a positioning groove for positioning the blade is provided on the vertical short side of the first positioning block, and the positioning groove is at a right angle. The first mounting blocks are fixedly provided on both sides of the horizontal long side of the bottom of the first positioning block, and a first long hole is provided on the first mounting block. The first bolt can be passed through the first long hole and the first positioning block can be fixedly installed on the third positioning plate by the first bolt.

[0010] Furthermore, the outer edge of the upper end of the first positioning plate protrudes outward and forms a second annular protrusion, the outer edge of the upper end of the second annular protrusion protrudes outward and forms a second annular positioning protrusion, and second positioning grooves corresponding to the number of the second positioning blocks are evenly opened on the upper end surface of the second annular protrusion along the circumferential direction of the main shaft, and the lower end surface of the second positioning block protrudes outward and forms a second positioning protrusion adapted to the second positioning groove, and the second positioning protrusion can be engaged with the second positioning groove.

[0011] Furthermore, the second positioning block is L-shaped, and a positioning bevel for positioning the blade is provided on the vertical short side of the second positioning block. Second mounting blocks are fixedly provided on both sides of the horizontal long side of the bottom of the second positioning block, and a second long hole is provided on the second mounting block. A second bolt can be passed through the second long hole and the second positioning block can be fixedly installed on the first positioning plate by the second bolt.

[0012] Furthermore, the second wedge block mechanism includes a second wedge block and a second wedge-shaped groove opened on the main shaft. The main shaft is detachably provided with a second sleeve placed on the first positioning plate and used to support the first positioning plate. The main shaft is also detachably provided with a third sleeve placed on the first positioning plate. The second sleeve and the third sleeve are both loosely matched with the main shaft. The second wedge block can be inserted into the second wedge-shaped groove and press the third sleeve to clamp the first positioning plate.

[0013] Furthermore, a fourth sleeve placed on the first positioning plate and used to support the second positioning plate can be detachably sleeved on the main shaft, the fourth sleeve is clearance-matched with the main shaft, and the second wedge block can be inserted into the second wedge-shaped groove and clamp the second positioning plate.

[0014] An impeller positioning welding process is implemented through the following process steps:

[0015] Step 1: Preparation: Place the base plate at the position to be welded, and then lock the spindle onto the base plate.

[0016] Step 2: Pass the base through the main shaft and place it on the bottom plate, put the first positioning plate on the main shaft, and make the first annular protrusion at the bottom of the first positioning plate embedded in the circular groove on the bottom plate, and use the second positioning key to position the first positioning plate. The first positioning plate can further fix the main shaft, and at the same time position the base and press the base.

[0017] Step 3: First, fix each second positioning block to the corresponding position on the first positioning plate, so that the second positioning protrusion at the bottom of the second positioning block can be embedded in the second positioning groove on the first positioning plate, and one side of the second mounting block of the second positioning block can be abutted against the inner side of the second annular positioning protrusion, thereby positioning the second positioning block, and then locking and fixing the second positioning block with the second bolt.

[0018] Step 4: Arrange the various pads evenly along the circumferential direction of the main shaft and place them on the upper end surface of the base, pass the reinforcement ring through the main shaft and support it through the pads, sleeve the first sleeve on the main shaft and place it on the upper end surface of the first positioning plate, sleeve the second positioning plate on the main shaft and support it through the first sleeve, the second positioning plate can position the reinforcement ring, and then insert the first wedge block into the first wedge-shaped groove to clamp the second positioning plate so that the whole is in a fixed state.

[0019] Step 5: Pass the third positioning disk through the main shaft and place it on the bottom plate and embed it in the annular groove, and position the third positioning disk through the first positioning key.

[0020] Step 6: Then fix each first positioning block to the corresponding position on the third positioning plate, so that the first positioning protrusion at the bottom of the first positioning block can be embedded in the first positioning groove on the third positioning plate, and one side of the first mounting block of the first positioning block can be abutted against the outer side of the first annular positioning protrusion, thereby positioning the first positioning block, and then locking and fixing the first positioning block by the first bolt.

[0021] Step 7: Place the blade on the base and embed the reinforcement ring into the notch on the blade, so that one side of the blade can abut against the positioning groove on the first positioning block and the other side of the blade can abut against the positioning bevel on the corresponding second positioning block. The first positioning block cooperates with the second positioning block to position the blade, and then spot weld the positioned blade. Repeat this step to position and spot weld the remaining blades in turn.

[0022] Step 8: Loosen the first wedge block and remove it from the first wedge-shaped notch, and then remove the second positioning plate and the first sleeve from the main shaft in turn.

[0023] Step 9: Sleeve the second sleeve on the main shaft and place it on the upper end face of the first positioning plate, sleeve the first positioning plate on the main shaft and support it through the second sleeve, and then sleeve the third sleeve on the main shaft and place it on the upper end face of the first positioning plate, insert the second wedge block into the second wedge-shaped notch and press the third sleeve to clamp the first positioning plate so that the whole is in a fixed state, then pass the conical tube through the main shaft and place it on the upper end of the blade, and use the first positioning plate to play a positioning role, and finally fix the conical tube by spot welding.

[0024] Step 10: Loosen the second wedge block and remove it from the second wedge-shaped notch, and then remove the third sleeve, the first positioning plate and the second sleeve from the main shaft in sequence.

[0025] Step 11: Sleeve the fourth sleeve on the main shaft and place it on the upper end face of the first positioning plate, sleeve the second positioning plate on the main shaft and support it through the fourth sleeve, insert the second wedge block into the second wedge-shaped groove to clamp the second positioning plate so that the whole is in a fixed state, then pass the round tube through the main shaft and place it on the upper end of the conical tube, and use the second positioning plate to play a positioning role, and finally fix the round tube by spot welding.

[0026] Step 12: Loosen the second wedge block and remove it from the second wedge-shaped notch, and then remove the second positioning plate and the fourth sleeve from the main shaft in turn.

[0027] Step 13: Loosen the main shaft and remove it from the base plate, loosen the first bolt and remove each first positioning block, loosen the second bolt and remove each second positioning block, and then remove the first positioning plate from the base plate.

[0028] Step 14: Completely weld the spot-welded impeller. After welding is completed, the impeller can be removed from the base plate and placed.

[0029] From the above description, it can be seen that the overall structure of the impeller positioning welding tool provided by the present invention is simple and practical. Through the setting of the first positioning plate, the base can be positioned. Through the setting of the first positioning plate, the conical tube can be positioned. Through the setting of the second positioning plate, the round tube can be positioned. Through the setting of the main shaft, the coaxiality requirements of the base, conical tube and round tube on the impeller after welding can be ensured. Through the cooperation of the first positioning block and the second positioning block, the blades can be quickly positioned, with high positioning accuracy and small error, ensuring that the eccentricity of the impeller after welding is small, thereby making the operation of the impeller more stable and the overall welding quality high. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The figure is a schematic diagram of the three-dimensional structure decomposition of an impeller positioning welding tooling of the present invention.

[0031] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0032] Figure 3 for Figure 1 A local enlarged schematic diagram of point B in the middle.

[0033] Figure 4 for Figure 1 A partial enlarged schematic diagram of point C in the middle.

[0034] Figure 5 Schematic diagram of the welding of the base, reinforcement ring and blades.

[0035] Figure 6 for Figure 5 Schematic diagram of the internal structure.

[0036] Figure 7 for Figure 6 A partial enlarged schematic diagram of point D in the middle.

[0037] Figure 8 Schematic diagram of welding of conical tubes.

[0038] Fig. 9 Schematic diagram of round tube welding.

[0039] Fig.10 It is a schematic diagram of the three-dimensional structure of the impeller.

[0040] In the figure: 1-impeller; 11-base; 111-first through hole; 12-reinforcement ring; 13-conical tube; 14-circular tube; 15-blade; 2-bottom plate; 21-circular groove; 22-annular groove; 3-main shaft; 41-first positioning plate; 411-first annular convex block; 412-second annular convex block; 413-second annular positioning convex block; 414-second positioning groove; 42-second positioning plate; 43-third positioning plate; 431-first annular positioning convex block; 432-first positioning groove; 51-first positioning plate; 52-second positioning plate; 61-pad; 62-first sleeve; 63-second sleeve ;64-third sleeve;65-fourth sleeve;71-first positioning block;711-first positioning protrusion;712-positioning groove;713-first mounting block;714-first long hole;715-first bolt;72-second positioning block;721-second positioning protrusion;722-positioning bevel;723-second mounting block;724-second long hole;725-second bolt;81-first wedge mechanism;811-first wedge;812-first wedge-shaped notch;82-second wedge mechanism;821-second wedge;822-second wedge-shaped notch;91-first positioning key;92-second positioning key. DETAILED DESCRIPTION

[0041] The present invention is further described below through specific implementation modes.

[0042] like Figures 1 to 10 As shown, an impeller positioning welding tool described in the present invention includes a base plate 2, a main shaft 3 is detachably provided at the center of the base plate 2, a first positioning disk 41 for positioning the base 11 of the impeller 1, a second positioning disk 42 for positioning the reinforcement ring 12 of the impeller 1, a first positioning plate 51 for positioning the conical tube 13 of the impeller 1, and a second positioning plate 52 for positioning the circular tube 14 of the impeller 1 are detachably sleeved on the main shaft 3, the reinforcement ring 12 is supported by a plurality of pads 61 placed on the base 11, a third positioning disk 43 is provided on the base plate 2, a plurality of first positioning blocks 71 are provided on the third positioning disk 43, the first positioning disk 41 is provided with second positioning blocks 72 whose number is consistent with the first positioning blocks 71, the first positioning block 71 positions the blades 15 of the impeller 1 by cooperating with the corresponding second positioning block 72, and a first wedge mechanism 81 for clamping the second positioning disk 42 and a second wedge mechanism 82 for clamping the first positioning plate 51 and the second positioning plate 52 are further provided on the main shaft 3.

[0043] A threaded hole is provided at the center of the base plate 2, a raised portion matching the threaded hole is fixedly provided at the lower end of the main shaft 3, the raised portion is provided with an external thread, and the main shaft 3 is threadedly connected to the threaded hole on the base plate 2 through the raised portion.

[0044] By setting the first positioning disk 41, the base 11 can be positioned; by setting the first positioning plate 51, the conical tube 13 can be positioned; by setting the second positioning plate 52, the circular tube 14 can be positioned; by setting the main shaft 3, the coaxiality requirements of the base 11, the conical tube 13 and the circular tube 14 on the impeller 1 after welding can be ensured; by the cooperation of the first positioning block 71 and the second positioning block 72, the blade 15 can be quickly positioned with high positioning accuracy and small error, thereby ensuring that the eccentricity of the impeller 1 after welding is small, thereby making the operation of the impeller 1 more stable and the overall welding quality high.

[0045] like Figures 1 to 3 As shown, the bottom plate 2 is circular in shape, the center of the upper end of the bottom plate 2 is recessed inward and formed with a circular groove 21, the edge of the upper end of the bottom plate 2 is recessed inward and formed with an annular groove 22, the third positioning plate 43 is annular and embedded in the annular groove 22, and a first positioning key 91 is also provided between the third positioning plate 43 and the annular groove 22, the lower end surface of the first positioning plate 41 protrudes outward and is formed with a first annular protrusion 411 for positioning the base 11, the outer diameter of the first annular protrusion 411 is adapted to the inner diameter of the circular groove 21, and the outer diameter of the first annular protrusion 411 is also adapted to the inner diameter of the first through hole 111 on the base 11, the first annular protrusion 411 can be embedded in the circular groove 21 and the first positioning plate 4 A gap for accommodating the base 11 is formed between the lower end surface of the bottom plate 1 and the upper end surface of the bottom plate 2. A second positioning key 92 is further provided between the first annular protrusion 411 and the circular groove 21. The first positioning disk 41, the second positioning disk 42, the first positioning plate 51 and the second positioning plate 52 are all circular in shape. The central axes of the first positioning disk 41, the second positioning disk 42, the third positioning disk 43, the first positioning plate 51 and the second positioning plate 52 coincide with the central axis of the main shaft 3. The outer diameter of the second positioning disk 42 is matched with the inner diameter of the reinforcing ring 12. The outer diameter of the first positioning plate 51 is matched with the inner diameter of the upper end of the conical tube 13. The outer diameter of the second positioning plate 52 is matched with the inner diameter of the circular tube 14.

[0046] A first through groove is provided on the lower end surface of the third positioning disk 43, and a first key groove matched with the first positioning key 91 is provided in the annular groove 22. The first positioning key 91 can be embedded in the first key groove and the first through groove, thereby positioning the third positioning disk 43 and ensuring the accurate position of the first positioning block 71. A second through groove is provided on the lower end surface of the first annular protrusion 411 of the first positioning disk 41, and a second key groove matched with the second positioning key 92 is provided in the circular groove 21 of the base plate 2. The second positioning key 92 can be embedded in the second key groove and the second through groove, thereby positioning the first positioning disk 41 and ensuring the accurate position of the second positioning block 72.

[0047] A first inner hole is provided at the center of the first positioning disk 41, and the inner diameter of the first inner hole is adapted to the outer diameter of the main shaft 3; a second inner hole is provided at the center of the second positioning disk 42, and the inner diameter of the second inner hole is adapted to the outer diameter of the main shaft 3; a third inner hole is provided at the center of the first positioning plate 51, and the inner diameter of the third inner hole is adapted to the outer diameter of the main shaft 3; a fourth inner hole is provided at the center of the second positioning plate 52, and the inner diameter of the fourth inner hole is adapted to the outer diameter of the main shaft 3; a plurality of circular holes are evenly distributed on the second positioning disk 42 along the circumferential direction of the second positioning disk 42; a plurality of first fan-shaped notches are evenly distributed on the first positioning plate 51 along the circumferential direction of the first positioning plate 51; a plurality of second fan-shaped notches are evenly distributed on the second positioning plate 52 along the circumferential direction of the first positioning plate 51, thereby reducing the weight of the second positioning disk 42, the first positioning plate 51 and the second positioning plate 52, and facilitating operation and use.

[0048] like Figures 4 to 6 As shown, the first wedge block mechanism 81 includes a first wedge block 811 and a first wedge-shaped groove 812 opened on the main shaft 3. The main shaft 3 is detachably provided with a first sleeve 62 placed on the first positioning disk 41 and used to support the second positioning disk 42. The first sleeve 62 is clearance-matched with the main shaft 3. The first wedge block 811 can be inserted into the first wedge-shaped groove 812 and clamp the second positioning disk 42. By adopting this structure, the first wedge block 811 can be quickly disassembled and assembled, which is simple and convenient to use, thereby quickly clamping or loosening the second positioning disk 42, thereby improving the overall assembly efficiency.

[0049] like Figure 3As shown, the inner edge of the upper end of the third positioning disk 43 protrudes outward and is formed with a first annular positioning protrusion 431, and the upper end surface of the third positioning disk 43 is evenly provided with first positioning grooves 432 consistent with the number of the first positioning blocks 71 along the circumferential direction of the main shaft 3, and the lower end surface of the first positioning block 71 protrudes outward and is formed with a first positioning protrusion 711 adapted to the first positioning groove 432, and the first positioning protrusion 711 can be engaged with the first positioning groove 432. By adopting this structure, the equal distribution of the first positioning blocks 71 can be accurately controlled, thereby controlling the equal distribution of the impeller 1.

[0050] like Figure 3 As shown, the first positioning block 71 is L-shaped, and a positioning groove 712 for positioning the blade 15 is provided on the vertical short side of the first positioning block 71, and the positioning groove 712 is right-angled. First mounting blocks 713 are fixedly provided on both sides of the horizontal long side of the bottom of the first positioning block 71, and a first long hole 714 is provided on the first mounting block 713. A first bolt 715 can be passed through the first long hole 714, and the first positioning block 71 is fixedly installed on the third positioning plate 43 by the first bolt 715, so that the first positioning protrusion 711 at the bottom of the first positioning block 71 can be embedded in the first positioning groove 432 on the third positioning plate 43, and one side of the first mounting block 713 of the first positioning block 71 is abutted against the outer side of the first annular positioning protrusion 431, thereby positioning the first positioning block 71.

[0051] like Figure 2 and Figure 4 As shown, the outer edge of the upper end of the first positioning plate 41 protrudes outward and is formed with a second annular protrusion 412, the outer edge of the upper end of the second annular protrusion 412 protrudes outward and is formed with a second annular positioning protrusion 413, and the upper end surface of the second annular protrusion 412 is evenly provided with second positioning grooves 414 consistent with the number of the second positioning blocks 72 along the circumferential direction of the main shaft 3, the lower end surface of the second positioning block 72 protrudes outward and is formed with a second positioning protrusion 721 adapted to the second positioning groove 414, and the second positioning protrusion 721 can be engaged with the second positioning groove 414. By adopting this structure, the equal distribution of the second positioning blocks 72 can be accurately controlled, thereby controlling the equal distribution of the impeller 1.

[0052] like Figure 2As shown, the second positioning block 72 is L-shaped, and a positioning bevel 722 for positioning the blade 15 is provided on the vertical short side of the second positioning block 72, and second mounting blocks 723 are fixedly provided on both sides of the horizontal long side of the bottom of the second positioning block 72, and a second long hole 724 is provided on the second mounting block 723, and a second bolt 725 can be passed through the second long hole 724 and the second positioning block 72 is fixedly installed on the first positioning plate 41 by the second bolt 725, so that the second positioning protrusion 721 at the bottom of the second positioning block 72 can be embedded in the second positioning groove 414 on the first positioning plate 41, and one side of the second mounting block 723 of the second positioning block 72 can be abutted against the inner side of the second annular positioning protrusion 413, thereby positioning the second positioning block 72.

[0053] like Figure 4 and Figure 8 As shown, the second wedge block mechanism 82 includes a second wedge block 821 and a second wedge-shaped groove 822 opened on the main shaft 3, the main shaft 3 is detachably provided with a second sleeve 63 placed on the first positioning disk 41 and used to support the first positioning plate 51, and the main shaft 3 is also detachably provided with a third sleeve 64 placed on the first positioning plate 51, the second sleeve 63 and the third sleeve 64 are both loosely matched with the main shaft 3, the second wedge block 821 can be inserted into the second wedge-shaped groove 822 and press the third sleeve 64 to clamp the first positioning plate 51. By adopting this structure, the second wedge block 821 can be quickly disassembled and assembled, which is simple and convenient to use, thereby quickly clamping or loosening the first positioning plate 51 and improving the overall assembly efficiency.

[0054] like Figure 4 and Fig. 9 As shown, the main shaft 3 is detachably provided with a fourth sleeve 65 placed on the first positioning disk 41 and used to support the second positioning plate 52. The fourth sleeve 65 is clearance-matched with the main shaft 3. The second wedge block 821 can be inserted into the second wedge-shaped groove 822 and clamp the second positioning plate 52. By quickly disassembling and assembling the second wedge block 821, the second positioning plate 52 can be quickly clamped or loosened, thereby improving the overall assembly efficiency.

[0055] A positioning welding process of an impeller 1 is implemented by the following process steps:

[0056] Step 1: Preparation work, place the base plate 2 at the position to be welded, and then lock the main shaft 3 on the base plate 2.

[0057] Step 2: Pass the base 11 through the main shaft 3 and place it on the bottom plate 2, sleeve the first positioning plate 41 on the main shaft 3, and make the first annular protrusion 411 at the bottom of the first positioning plate 41 embedded in the circular groove 21 on the bottom plate 2, and use the second positioning key 92 to position the first positioning plate 41. The first positioning plate 41 can further fix the main shaft 3, and at the same time position the base 11 and press the base 11.

[0058] Step 3: First, fix each of the second positioning blocks 72 at the corresponding position on the first positioning plate 41, so that the second positioning protrusion 721 at the bottom of the second positioning block 72 can be embedded in the second positioning groove 414 on the first positioning plate 41, and one side of the second mounting block 723 of the second positioning block 72 can be abutted against the inner side of the second annular positioning protrusion 413, thereby positioning the second positioning block 72, and then locking and fixing the second positioning block 72 by the second bolt 725.

[0059] Step 4: Arrange the pads 61 evenly along the circumferential direction of the main shaft 3 and place them on the upper end surface of the base 11, pass the reinforcement ring 12 through the main shaft 3 and support it through the pads 61, sleeve the first sleeve 62 on the main shaft 3 and place it on the upper end surface of the first positioning plate 41, sleeve the second positioning plate 42 on the main shaft 3 and support it through the first sleeve 62, the second positioning plate 42 can position the reinforcement ring 12, and then insert the first wedge block 811 into the first wedge-shaped groove 812 to clamp the second positioning plate 42, so that the whole is in a fixed state.

[0060] Step 5: Pass the third positioning disk 43 through the main shaft 3 and place it on the bottom plate 2 and embed it in the annular groove 22 , and position the third positioning disk 43 by using the first positioning key 91 .

[0061] Step 6: Then fix each of the first positioning blocks 71 at the corresponding position on the third positioning plate 43, so that the first positioning protrusion 711 at the bottom of the first positioning block 71 can be embedded in the first positioning groove 432 on the third positioning plate 43, and one side of the first mounting block 713 of the first positioning block 71 can be abutted against the outer side of the first annular positioning protrusion 431, thereby positioning the first positioning block 71, and then locking and fixing the first positioning block 71 by the first bolt 715.

[0062] Step 7: Place the blade 15 on the base 11 and embed the reinforcement ring 12 in the notch on the blade 15, so that one side of the blade 15 can abut against the positioning groove 712 on the first positioning block 71 and the other side of the blade 15 can abut against the corresponding positioning bevel 722 on the second positioning block 72. The first positioning block 71 cooperates with the second positioning block 72 to position the blade 15, and then the positioned blade 15 is spot-welded and fixed. Repeat this step to position and spot-weld the remaining blades 15 in turn.

[0063] Step 8: Loosen the first wedge block 811 and remove the first wedge block 811 from the first wedge-shaped notch 812 , and then remove the second positioning plate 42 and the first sleeve 62 from the main shaft 3 in sequence.

[0064] Step 9: Sleeve the second sleeve 63 on the main shaft 3 and place it on the upper end surface of the first positioning plate 41, sleeve the first positioning plate 51 on the main shaft 3 and support it through the second sleeve 63, and then sleeve the third sleeve 64 on the main shaft 3 and place it on the upper end surface of the first positioning plate 51, insert the second wedge block 821 into the second wedge-shaped groove 822 and press the third sleeve 64 to clamp the first positioning plate 51 so that the whole is in a fixed state, and then pass the conical tube 13 through the main shaft 3 and place it on the upper end of the blade 15, and use the first positioning plate 51 to play a positioning role, and finally fix the conical tube 13 by spot welding.

[0065] Step 10: Loosen the second wedge block 821 and remove the second wedge block 821 from the second wedge-shaped notch 822 , and then remove the third sleeve 64 , the first positioning plate 51 and the second sleeve 63 from the main shaft 3 in sequence.

[0066] Step 11: Sleeve the fourth sleeve 65 on the main shaft 3 and place it on the upper end surface of the first positioning plate 41, sleeve the second positioning plate 52 on the main shaft 3 and support it through the fourth sleeve 65, insert the second wedge block 821 into the second wedge-shaped groove 822 to clamp the second positioning plate 52 so that the whole is in a fixed state, then pass the round tube 14 through the main shaft 3 and place it on the upper end of the conical tube 13, and use the second positioning plate 52 to play a positioning role, and finally fix the round tube 14 by spot welding.

[0067] Step 12: Loosen the second wedge block 821 and remove the second wedge block 821 from the second wedge-shaped notch 822 , and then remove the second positioning plate 52 and the fourth sleeve 65 from the main shaft 3 in sequence.

[0068] Step 13: Loosen the main shaft 3 and remove the main shaft 3 from the base plate 2, loosen the first bolt 715, and remove each of the first positioning blocks 71, loosen the second bolt 725, and remove each of the second positioning blocks 72, and then remove the first positioning plate 41 from the base plate 2.

[0069] Step 14: The impeller 1 fixed by spot welding is completely welded. After the welding is completed, the impeller 1 can be taken out from the base plate 2 and placed.

[0070] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An impeller positioning welding tool, characterized in that: The invention comprises a bottom plate, the center of which is detachably provided with a main shaft, the main shaft is detachably provided with a first positioning plate for positioning an impeller base, a second positioning plate for positioning an impeller reinforcement ring, a first positioning plate for positioning an impeller conical tube, and a second positioning plate for positioning an impeller circular tube, the reinforcement ring is supported by a plurality of pads placed on the base, a third positioning plate is provided on the bottom plate, a plurality of first positioning blocks are provided on the third positioning plate, a second positioning block having the same number as the first positioning block is provided on the first positioning plate, the first positioning block positions the impeller blades by cooperating with the corresponding second positioning block, and a first positioning plate for clamping the second positioning block is also provided on the main shaft. The first wedge mechanism of the positioning plate, the second wedge mechanism for clamping the first positioning plate and the second positioning plate, the bottom plate is circular in shape, the center of the upper end of the bottom plate is recessed inwardly and forms a circular groove, the edge of the upper end of the bottom plate is recessed inwardly and forms an annular groove, the third positioning plate is annular in shape and is embedded in the annular groove, and a first positioning key is also provided between the third positioning plate and the annular groove, the lower end surface of the first positioning plate protrudes outwardly and forms a first annular protrusion for positioning the base, the outer diameter of the first annular protrusion is adapted to the inner diameter of the circular groove, the first annular protrusion can be embedded in the circular groove and form a useful In the gap accommodating the base, a second positioning key is further provided between the first annular protrusion and the circular groove, the first positioning disk, the second positioning disk, the first positioning plate and the second positioning plate are all circular, and the central axes of the first positioning disk, the second positioning disk, the third positioning disk, the first positioning plate and the second positioning plate all coincide with the central axis of the main shaft, the first wedge block mechanism includes a first wedge block and a first wedge-shaped notch opened on the main shaft, the main shaft is detachably provided with a first sleeve placed on the first positioning disk and used to support the second positioning disk, the first sleeve is loosely matched with the main shaft, and the first wedge block can be inserted into the first wedge-shaped notch The third positioning plate is clamped, the inner edge of the upper end of the third positioning plate protrudes outward and forms a first annular positioning protrusion, the upper end surface of the third positioning plate is evenly provided with a first positioning groove consistent with the number of the first positioning block along the circumferential direction of the main shaft, the lower end surface of the first positioning block protrudes outward and forms a first positioning protrusion adapted to the first positioning groove, the first positioning protrusion can be fitted with the first positioning groove, the first positioning block is L-shaped, a positioning groove for positioning the blade is provided on the vertical short side of the first positioning block, the positioning groove is right-angled, the first mounting blocks are fixedly provided on both sides of the horizontal long side of the bottom of the first positioning block, and the first mounting block is provided with a first long hole,A first bolt may be inserted into the first long hole, and the first positioning block may be fixedly mounted on the third positioning plate by the first bolt.

2. The impeller positioning welding tool according to claim 1, characterized in that: The outer edge of the upper end of the first positioning plate protrudes outward and forms a second annular protrusion, the outer edge of the upper end of the second annular protrusion protrudes outward and forms a second annular positioning protrusion, and second positioning grooves corresponding to the number of the second positioning blocks are evenly opened on the upper end surface of the second annular protrusion along the circumferential direction of the main shaft, and the lower end surface of the second positioning block protrudes outward and forms a second positioning protrusion adapted to the second positioning groove, and the second positioning protrusion can be engaged with the second positioning groove.

3. The impeller positioning welding tool according to claim 2, characterized in that: The second positioning block is L-shaped, and a positioning bevel for positioning the blade is provided on the vertical short side of the second positioning block. Second mounting blocks are fixedly provided on both sides of the horizontal long side of the bottom of the second positioning block. A second long hole is provided on the second mounting block, and a second bolt can be passed through the second long hole to fix the second positioning block on the first positioning plate through the second bolt.

4. The impeller positioning welding tool according to claim 3 is characterized in that: The second wedge block mechanism includes a second wedge block and a second wedge-shaped groove opened on the main shaft. The main shaft is detachably provided with a second sleeve placed on the first positioning disk and used to support the first positioning plate. The main shaft is also detachably provided with a third sleeve placed on the first positioning plate. The second sleeve and the third sleeve are both loosely matched with the main shaft. The second wedge block can be inserted into the second wedge-shaped groove and press the third sleeve to clamp the first positioning plate.

5. The impeller positioning welding tool according to claim 4, characterized in that: The main shaft is detachably sleeved with a fourth sleeve placed on the first positioning disk and used to support the second positioning plate. The fourth sleeve is clearance-matched with the main shaft, and the second wedge block can be inserted into the second wedge-shaped groove and clamp the second positioning plate.

6. An impeller positioning welding process, using an impeller positioning welding tool as claimed in claim 5 for positioning welding, characterized in that: This is achieved through the following process steps: Step 1: Preparation: Place the base plate at the position to be welded, and then lock the spindle on the base plate; Step 2: Pass the base through the spindle and place it on the bottom plate, sleeve the first positioning plate on the spindle, and embed the first annular protrusion at the bottom of the first positioning plate into the circular groove on the bottom plate, and position the first positioning plate through the second positioning key. The first positioning plate can further fix the spindle, and at the same time position the base and press the base; Step 3: First, each of the second positioning blocks is fixedly installed at a corresponding position on the first positioning plate, so that the second positioning protrusion at the bottom of the second positioning block is embedded in the second positioning groove on the first positioning plate, and one side of the second mounting block of the second positioning block is abutted against the inner side of the second annular positioning protrusion, thereby positioning the second positioning block, and then locking and fixing the second positioning block by the second bolt; Step 4: Arrange the cushion blocks evenly along the circumferential direction of the main shaft and place them on the upper end surface of the base, pass the reinforcement ring through the main shaft and support it through the cushion blocks, sleeve the first sleeve on the main shaft and place it on the upper end surface of the first positioning plate, sleeve the second positioning plate on the main shaft and support it through the first sleeve, the second positioning plate can position the reinforcement ring, and then insert the first wedge block into the first wedge-shaped notch to clamp the second positioning plate, so that the whole is in a fixed state; Step 5: Pass the third positioning disk through the main shaft and place it on the bottom plate and embed it in the annular groove, and position the third positioning disk by using the first positioning key; Step 6: Then, each of the first positioning blocks is fixedly installed at a corresponding position on the third positioning plate, so that the first positioning protrusion at the bottom of the first positioning block is embedded in the first positioning groove on the third positioning plate, and one side of the first mounting block of the first positioning block is abutted against the outer side of the first annular positioning protrusion, thereby positioning the first positioning block, and then locking and fixing the first positioning block by the first bolt; Step 7: Place the blade on the base and embed the reinforcement ring in the notch on the blade, so that one side of the blade abuts against the positioning groove on the first positioning block and the other side of the blade abuts against the corresponding positioning bevel on the second positioning block. The first positioning block cooperates with the second positioning block to position the blade, and then spot welds the positioned blade. Repeat this step to position and spot weld the remaining blades in turn. Step 8: loosen the first wedge block and remove the first wedge block from the first wedge-shaped notch, and then remove the second positioning plate and the first sleeve from the main shaft in sequence; Step 9: Sleeve the second sleeve on the main shaft and place it on the upper end surface of the first positioning plate, sleeve the first positioning plate on the main shaft and support it through the second sleeve, then sleeve the third sleeve on the main shaft and place it on the upper end surface of the first positioning plate, insert the second wedge block into the second wedge-shaped notch and press the third sleeve to clamp the first positioning plate so that the whole is in a fixed state, then pass the conical tube through the main shaft and place it on the upper end of the blade, and use the first positioning plate to play a positioning role, and finally fix the conical tube by spot welding; Step 10: loosen the second wedge block, remove the second wedge block from the second wedge-shaped notch, and then remove the third sleeve, the first positioning plate and the second sleeve from the main shaft in sequence; Step 11: sleeve the fourth sleeve on the main shaft and place it on the upper end surface of the first positioning plate, sleeve the second positioning plate on the main shaft and support it through the fourth sleeve, insert the second wedge block into the second wedge-shaped notch to clamp the second positioning plate so that the whole is in a fixed state, then pass the round tube through the main shaft and place it on the upper end of the conical tube, and use the second positioning plate to play a positioning role, and finally fix the round tube by spot welding; Step 12: loosen the second wedge block, and take the second wedge block out of the second wedge-shaped notch, and then remove the second positioning plate and the fourth sleeve from the main shaft in sequence; Step 13: loosen the main shaft and remove the main shaft from the bottom plate, loosen the first bolt, remove each of the first positioning blocks, loosen the second bolt, remove each of the second positioning blocks, and then remove the first positioning plate from the bottom plate; Step 14: Completely weld the impeller fixed by spot welding. After welding is completed, the impeller can be taken out from the base plate and placed.

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