Impeller laser welding tool

Abstract

The utility model relates to the field of impeller welding, in particular to an impeller laser welding tool which comprises a lower die base and a positioning core rod, a lower base plate is fixed on the lower die base, a lower die plate is fixed on the lower base plate, a plurality of curved surface positioning block sets are fixed in the lower die plate, a material lifting plate is arranged above the lower die plate, and a stopping plate is arranged on the material lifting plate. The top ends of a plurality of lifting rods are fixed to the position close to the edge of the material lifting plate, the lifting rods penetrate through the lower cushion plate and the lower die base, and a power mechanism is arranged at the bottom ends of the lifting rods. And the blade and the cover plate cannot move in the welding process, the welding precision is greatly improved, and meanwhile the blade is well protected.

Description

Technical Field

[0001] The utility model relates to the field of impeller welding, in particular to a laser welding tooling for impellers. Background Art

[0002] In the process of impeller production and manufacturing, there is a process of welding blades to the cover plate, that is, welding the originally scattered blades and cover plates together. In order to ensure the welding accuracy, before welding, it is necessary to fix multiple blades and the cover plate through corresponding welding tooling before subsequent welding work can be carried out. A patent with the application number CN202122468780.0 discloses an impeller welding and assembly positioning fixture. This positioning fixture only presses and fixes the blades and the cover plate through a pressing component. Although this positioning fixture can play a certain role in positioning and clamping, this positioning and clamping method only limits the clamping and positioning of the blades to the upper and lower sides, and the upper and lower sides of the blades are very narrow. On the one hand, the clamping effect is poor, resulting in the blades being prone to displacement during clamping and welding. On the other hand, during the process of the positioning fixture pressing forcefully, the blades are very likely to damage the cover plate and are also easily deformed, ultimately leading to poor quality or unqualified impellers as a whole. Summary of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a laser welding tooling for impellers, which solves the problems existing in the prior art. The welding tooling of the utility model can clamp and position the blades well, so that the blades and the cover plate will not move during the welding process, greatly improving the welding accuracy. In addition, the clamping of the welding tooling to the blades is to clamp and position the blades along the arc of the blades from the two sides of the blades. This method not only has a good clamping and positioning effect, but also plays a good protective role for the blades.

[0005] (2) Technical Solutions

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a laser welding tooling for impellers, including a lower die base and a positioning mandrel. A lower backing plate is fixed on the lower die base, a lower template is fixed on the lower backing plate, and several groups of curved surface positioning block groups are fixed in the lower template. A lifting plate is arranged above the lower template, a stop block is arranged on the lifting plate, and the tops of several lifting rods are fixed near the edge of the lifting plate. The lifting rods penetrate through the lower backing plate and the lower die base, and a power mechanism is arranged at the bottom ends of the lifting rods.

[0007] Preferably, the power mechanism includes a connecting plate fixedly connected to the bottom end of the lifting rod, and the telescopic rod of a cylinder is fixed on the bottom surface of the connecting plate.

[0008] Preferably, the stop plate and the lower template are detachably connected via square pins, and both the stop plate and the lower template are provided with square pin insertion holes.

[0009] Preferably, a plurality of clamping blocks are provided on the lifting plate.

[0010] Preferably, the curved surface positioning block group includes a first curved surface positioning block and a second curved surface positioning block, the first curved surface positioning block is provided with a first curved surface, and the second curved surface positioning block is provided with a second curved surface.

[0011] Preferably, a first straight surface is provided on the first curved surface positioning block, the first straight surface is connected to a second straight surface perpendicular thereto, the second straight surface is connected to a first arcuate surface, and the first arcuate surface is connected to the second arcuate surface.

[0012] Preferably, the first straight surfaces of several first curved surface positioning blocks are connected in sequence to form a regular polygon, the first curved surface is connected to the second curved surface positioning block that forms a curved surface positioning block group with it, and the second curved surface is fixed to the second curved surface.

[0013] Preferably, the lifting rod is fixedly connected to the lifting plate by screws.

[0014] Preferably, an arc-shaped slot matching the screw is provided at the edge of the stop plate.

[0015] (III) Beneficial effects

[0016] 1. The utility model clamps and positions the inner and outer sides of the blades well through the curved positioning block group and the lifting plate, so that the blades and the cover plate will not move during the welding process, which greatly improves the welding accuracy and also plays a good protective role for the blades;

[0017] 2. The utility model has a good limiting effect on the stop plate through the arrangement of the square pin, the square pin insertion hole and the arc-shaped slot;

[0018] 3. The utility model arranges a first straight surface, a second straight surface, a first curved surface and a second curved surface on the first curved surface positioning block, wherein the first straight surfaces of several first curved surface positioning blocks are sequentially connected to form a regular polygon, which facilitates the insertion and fixation of the positioning core rod, wherein the second straight surface is arranged to resist the inner end of the blade, and the inner end of the blade is well limited, wherein the first curved surface is connected to the second curved surface positioning block that forms a curved surface positioning block group with it, and the second curved surface is used to fix the second curved surface positioning block of another group of curved surface positioning block groups. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the utility model.

[0020] Figure 2Schematic diagram of the lifting rod and power mechanism of the present utility model.

[0021] Figure 3 Overall schematic diagram of the stop plate of the present utility model.

[0022] Figure 4 Overall schematic diagram of the material lifting plate of the present utility model.

[0023] Figure 5 Schematic diagram of the lower template and the curved surface positioning block group of the present utility model.

[0024] Figure 6 Schematic diagram of the lower backing plate of the present utility model.

[0025] Figure 7 Schematic diagram of the positioning mandrel of the present utility model.

[0026] Figure 8 Schematic diagram of the lower die base of the present utility model.

[0027] Figure 9 Schematic diagram of the lifting rod, square pin and screw of the present utility model.

[0028] Figure 10 Schematic diagram of a group of curved surface positioning block groups of the present utility model.

[0029] Figure 11 Overall schematic diagram of the first curved surface positioning block of the present utility model.

[0030] Figure 12 For the present utility model Figure 11 Schematic diagram after changing the angle.

[0031] In the figure: 1 - lower die base, 2 - positioning mandrel, 3 - lower backing plate, 4 - lower template, 5 - curved surface positioning block group, 6 - material lifting plate, 7 - stop plate, 8 - lifting rod, 9 - power mechanism, 10 - connecting plate, 11 - cylinder, 12 - telescopic rod, 13 - square pin, 14 - square pin jack, 15 - clamping block, 16 - first curved surface positioning block, 17 - second curved surface positioning block, 18 - first curved surface, 19 - second curved surface, 20 - first straight surface, 21 - second straight surface, 22 - first arc surface, 23 - second arc surface, 24 - screw, 25 - arc-shaped card slot. Specific implementation mode

[0032] Next, the attached drawings in the embodiments of the present utility model will be combined Figure 1-12The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] The present invention provides a technical solution: an impeller laser welding tooling, which includes a lower die base 1 and a positioning mandrel 2. A lower backing plate 3 is fixed on the lower die base 1, a lower template 4 is fixed on the lower backing plate 3, and several groups of curved surface positioning block groups 5 are fixed inside the lower template 4. A lifting plate 6 is arranged above the lower template 4, a stop baffle 7 is arranged on the lifting plate 6, and the tops of several lifting rods 8 are fixed near the edge of the lifting plate 6. The lifting rods 8 penetrate through the lower backing plate 3 and the lower die base 1, and a power mechanism 9 is arranged at the bottom ends of the lifting rods 8. During work, first, the power mechanism 9 drives the lifting rods 8 to rise, and then drives the lifting plate 6 to rise together. After that, a certain number of blades are sequentially placed into the lower template 4. The inner side of one blade is closely attached to a group of curved surface positioning block groups 5 until all the curved surface positioning block groups 5 in the lower template 4 are placed with blades. Then, the power mechanism 9 drives the lifting rods 8 to descend, and then drives the lifting plate 6 to descend together until the inner side and the outer side of the blades are clamped. An arc surface that matches the outer side of the blade is arranged on the lifting plate 6. Then, the assembly of the impeller cover plate and the hub welded well is sleeved on the positioning mandrel 2. Then, the stop baffle 7 is fixed on the impeller cover plate. Then, laser welding can be carried out. The welding tooling of the present invention can well clamp and position the inner side and the outer side of the blades through the curved surface positioning block groups 5 and the lifting plate 6, so that the blades and the cover plate will not move during the welding process, greatly improving the welding accuracy, and at the same time, also playing a good role in protecting the blades.

[0034] The power mechanism 9 includes a connecting plate 10 fixedly connected to the bottom end of the lifting rod 8. The telescopic rod 12 of a cylinder 11 is fixed on the bottom surface of the connecting plate 10. Multiple lifting rods 8 are connected to the same connecting plate 10, so as to ensure the synchronous lifting of the lifting rods 8. It is simple and convenient to realize the lifting through the cylinder 11.

[0035] The stop plate 7 and the lower template 4 are detachably connected by a square pin 13, and a square pin socket 14 is provided on the stop plate 7 and the lower template 4. The setting of the square pin 13 and the square pin socket 14 not only plays a good positioning role, but also plays a good fixing role. After the assembly welded with the impeller cover plate and the hub is inserted into the positioning mandrel 2, the square pin 13 is inserted into the square pin socket 14 on the lower template 4, and then the square pin socket 14 on the stop plate 7 is aligned with the square pin 13 and inserted. This not only plays a role in positioning the stop plate 7, but also plays a role in fixing the stop plate 7. In order to strengthen the fixing effect of the stop plate 7, the stop plate 7 can also be locked with the lifting plate 6 by screws. It is also possible to hinge a number of flip clamping blocks on the lower die base 1 to clamp the stop plate 7.

[0036] A plurality of clamping blocks 15 are provided on the lifting plate 6, wherein the clamping block 15 is provided with an arc surface which matches the outer side surface of the blade, so that the arc surface on the clamping block 15 is in close contact with the outer side surface of the blade, thereby clamping and positioning the blade as a whole, and the groove formed between the two clamping blocks 15 also plays a good limiting role on the outer end portion of the blade.

[0037] The curved surface positioning block group 5 includes a first curved surface positioning block 16 and a second curved surface positioning block 17. The first curved surface positioning block 16 is provided with a first curved surface 18, and the second curved surface positioning block 17 is provided with a second curved surface 19. The first curved surface 18 and the second curved surface 19 play a good positioning role on the inner side of the blade.

[0038] A first straight surface 20 is provided on the first curved surface positioning block 16, and the first straight surface 20 is connected to a second straight surface 21 perpendicular thereto, and the second straight surface 21 is connected to a first arcuate surface 22, and the first arcuate surface 22 is connected to a second arcuate surface 23, and the first straight surfaces 20 of several first curved surface positioning blocks 16 are connected in sequence to form a regular polygon, and the first arcuate surface 22 is connected to a second curved surface positioning block 17 constituting a curved surface positioning block group 5 therewith, and another group of second curved surface positioning blocks 17 of the curved surface positioning block group 5 is fixed on the second arcuate surface 23, wherein the first straight surface 20 is provided, and the first straight surfaces 20 are connected in sequence to form a regular polygon, so that the insertion and fixation of the positioning core rod 2 are facilitated, and the second straight surface 21 is provided to resist the inner end of the blade, so as to limit the inner end of the blade well.

[0039] The lifting rod 8 is fixedly connected to the lifting plate 6 by screws 24, and this arrangement is convenient for disassembly and fixation.

[0040] An arc-shaped slot 25 matching the screw 24 is provided at the edge of the stop plate 7 , so as to further limit the stop plate 7 .

[0041] Working principle: During operation, first, the power mechanism 9 drives the lifting rod 8 to rise, and then drives the material lifting plate 6 to rise together. After that, a certain number of blades are sequentially placed into the lower template 4. The inner side of one blade is closely attached to a set of curved surface positioning block groups 5 until all the curved surface positioning block groups 5 in the lower template 4 are placed with blades. Then, the power mechanism 9 drives the lifting rod 8 to descend, and then drives the material lifting plate 6 to descend together until the inner side and the outer side of the blade are clamped. An arc surface that matches the outer side of the blade is provided on the material lifting plate 6. After that, the component obtained by welding the impeller cover plate and the hub is sleeved onto the positioning mandrel 2. Then, the stop baffle 7 is fixed on the impeller cover plate, and then laser welding can be carried out. The welding tooling of the present utility model can well clamp and position the inner side and the outer side of the blade through the curved surface positioning block groups 5 and the material lifting plate 6, so that the blade and the cover plate will not move during the welding process, greatly improving the welding accuracy, and at the same time, also playing a good protective role for the blade.

[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An impeller laser welding tool, characterized in that: The invention comprises a lower die base (1) and a positioning core rod (2), wherein a lower pad (3) is fixed on the lower die base (1), a lower template (4) is fixed on the lower pad (3), a plurality of curved surface positioning block groups (5) are fixed in the lower template (4), a lifting plate (6) is provided above the lower template (4), a stop plate (7) is provided on the lifting plate (6), the top ends of a plurality of lifting rods (8) are fixed near the edge of the lifting plate (6), the lifting rods (8) pass through the lower pad (3) and the lower die base (1), and a power mechanism (9) is provided at the bottom ends of the lifting rods (8).

2. The impeller laser welding tool according to claim 1, characterized in that: The power mechanism (9) comprises a connecting plate (10) fixedly connected to the bottom end of the lifting rod (8), and a telescopic rod (12) of a cylinder (11) is fixed on the bottom surface of the connecting plate (10).

3. The impeller laser welding tool according to claim 1, characterized in that: The stop plate (7) and the lower template (4) are detachably connected via a square pin (13), and both the stop plate (7) and the lower template (4) are provided with a square pin insertion hole (14).

4. The impeller laser welding tool according to claim 1, characterized in that: The material lifting plate (6) is provided with a plurality of clamping blocks (15).

5. The impeller laser welding tool according to claim 1, characterized in that: The curved surface positioning block group (5) comprises a first curved surface positioning block (16) and a second curved surface positioning block (17); the first curved surface positioning block (16) is provided with a first curved surface (18); and the second curved surface positioning block (17) is provided with a second curved surface (19).

6. The impeller laser welding tool according to claim 5, characterized in that: The first curved surface positioning block (16) is provided with a first straight surface (20), the first straight surface (20) is connected to a second straight surface (21) perpendicular thereto, the second straight surface (21) is connected to a first arcuate surface (22), and the first arcuate surface (22) is connected to a second arcuate surface (23).

7. The impeller laser welding tool according to claim 6, characterized in that: The first straight surfaces (20) of a plurality of the first curved surface positioning blocks (16) are sequentially connected to form a regular polygon; the first curved surface (22) is connected to the second curved surface positioning block (17) which forms the curved surface positioning block group (5) with the first curved surface; and the second curved surface (23) is fixed with another group of the second curved surface positioning blocks (17) of the curved surface positioning block group (5).

8. The impeller laser welding tool according to claim 1, characterized in that: The lifting rod (8) is fixedly connected to the material lifting plate (6) via screws (24).

9. The impeller laser welding tool according to claim 8, characterized in that: An arc-shaped slot (25) matching the screw (24) is provided at the edge of the stop plate (7).

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