Sand making machine rotor blade plate welding tool

Abstract

The utility model discloses a sand making machine rotor blade plate welding tool which comprises a lower tool and an upper tool, lower positioning plates are arranged on the front side and the rear side of the lower tool, lower positioning grooves are formed in the tops of the lower positioning plates, upper positioning plates are arranged on the front side and the rear side of the upper tool, upper positioning grooves are formed in the bottoms of the upper positioning plates, and the lower positioning plates are arranged in the upper positioning grooves. The lower positioning groove and the upper positioning groove are spliced to form a limiting groove, the shape of the limiting groove is matched with the vertical section of the rotor blade, and a receding groove is reserved in the position, at the welding position of the rotor blade, of the limiting groove; the tool is divided into the upper part and the lower part, and the upper part and the lower part are clamped and fixed, so that a part is fixed at a correct position, an operator can conveniently carry out positioning welding, the position and the angle of the part do not need to be manually positioned, the operation difficulty is reduced, and the production efficiency and the product percent of pass are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of heavy machinery industry, and in particular to the technical field of welding fixtures for rotor blades of sand making machines. Background Technology

[0002] The rotor blades of a sand making machine, also known as the throwing plate, are an important component of the rotor impeller of the sand making machine. Currently, the welding of rotor blades is basically done by welders by hand. Welders weld the components on the blades one by one, and the angles and positions of the components on the blades are positioned by workers using rulers. The angles of the parts on the blades are also positioned using angle rulers. This manual positioning method leads to deviations in the position and angle of the components.

[0003] Because the rotor of a sand making machine has very high requirements for blades, if poorly welded rotor blades are installed into the rotor, the rotor will produce abnormal vibrations during high-speed operation, resulting in a significant loss of kinetic energy, affecting the sand making effect, and shortening the service life compared to a rotor with high dynamic balance. Therefore, the welding of rotor blades requires operators to have certain operating skills. When operators without welding experience perform welding, it will lead to a low product qualification rate, resulting in a large waste of raw materials, increased production costs, and low production efficiency. Summary of the Invention

[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a welding fixture for the rotor blades of a sand making machine, which can solve the above problems.

[0005] To achieve the above objectives, this utility model proposes a welding fixture for rotor blades of a sand making machine, comprising a lower fixture and an upper fixture. The lower fixture has lower positioning plates on its front and rear sides, and a lower positioning groove is formed on the top of the lower positioning plates. The upper fixture has upper positioning plates on its front and rear sides, and an upper positioning groove is formed on the bottom of the upper positioning plates. The lower positioning groove and the upper positioning groove are joined together to form a limiting groove. The shape of the limiting groove matches the vertical cross-section of the rotor blades. The limiting groove has a clearance groove reserved at the welding point of the rotor blades.

[0006] Preferably, the two lower positioning plates are parallel to each other, and the two upper positioning plates are parallel to each other.

[0007] Preferably, the two lower positioning plates are connected on the left and right sides by a lower connecting plate, and the two upper positioning plates are connected on the left and right sides by an upper connecting plate.

[0008] Preferably, the top of the upper tooling is fixed with a top plate, and the top of the top plate is fixed with an ear plate.

[0009] Preferably, the upper positioning plate has an upper positioning hole, and the upper positioning holes on both sides are connected by upper positioning pins; the lower positioning plate has a lower positioning hole, and the lower positioning holes on both sides are connected by lower positioning pins.

[0010] Preferably, the clearance groove is an arc-shaped groove.

[0011] The beneficial effects of this utility model are as follows: By dividing the tooling into upper and lower parts and using the upper and lower parts to clamp and fix them, the parts are fixed in the correct position, which makes it convenient for operators to perform positioning welding. It eliminates the need for manual positioning of the parts' position and angle, which not only reduces the difficulty of operation but also improves production efficiency and product qualification rate.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is the front view of this utility model;

[0015] Figure 3 This is the left view of this utility model;

[0016] Figure 4 This is a bottom view of the present invention;

[0017] Figure 5 This is a schematic diagram of the assembly of the limiting groove of this utility model;

[0018] Figure 6 This is a schematic diagram of the positioning pin of this utility model;

[0019] Figure 7 This is a schematic diagram of the rotor blade structure of a sand making machine.

[0020] In the diagram: 1. Lower fixture; 2. Upper fixture; 3. Lower positioning plate; 4. Lower positioning groove; 5. Upper positioning plate; 6. Upper positioning groove; 7. Limiting groove; 8. Leaving groove; 9. Lower connecting plate; 10. Upper connecting plate; 11. Top plate; 12. Ear plate; 13. Upper positioning hole; 14. Upper positioning pin; 15. Lower positioning hole; 16. Lower positioning pin. Detailed Implementation

[0021] See Figures 1 to 7A welding fixture for rotor blades of a sand making machine includes a lower fixture 1 and an upper fixture 2. The lower fixture 1 has lower positioning plates 3 on its front and rear sides, and a lower positioning groove 4 is formed on the top of the lower positioning plates 3. The upper fixture 2 has upper positioning plates 5 on its front and rear sides, and an upper positioning groove 6 is formed on the bottom of the upper positioning plates 5. The lower positioning groove 4 and the upper positioning groove 6 are joined together to form a limiting groove 7. The shape of the limiting groove 7 matches the vertical cross section of the rotor blades. The limiting groove 7 has a clearance groove 8 reserved at the welding point of the rotor blades.

[0022] The two lower positioning plates 3 are parallel to each other, and the two upper positioning plates 5 are parallel to each other.

[0023] The two lower positioning plates 3 are connected on the left and right sides by the lower connecting plate 9, and the two upper positioning plates 5 are connected on the left and right sides by the upper connecting plate 10.

[0024] The top of the upper tooling 2 is fixed with a top plate 11, and the top of the top plate 11 is fixed with an ear plate 12.

[0025] The upper positioning plate 5 has an upper positioning hole 13, and the upper positioning holes 13 on both sides are connected by upper positioning pins 14. The lower positioning plate 3 has a lower positioning hole 15, and the lower positioning holes 15 on both sides are connected by lower positioning pins 16.

[0026] The upper positioning hole 13 and the lower positioning hole 15 are distributed on the outer periphery of the limiting groove.

[0027] The clearance groove 8 is an arc-shaped groove.

[0028] When manufacturing the welding fixture for the rotor blades of the sand making machine, first use a laser cutter to cut out four upper and lower positioning plates with holes. Then, install positioning pins into the cut positioning holes and connect the upper and lower positioning plates on both sides respectively. Next, weld the upper and lower connecting plates to the designated positions, and finally weld on the ear plates to complete the processing.

[0029] During welding, simply place the parts to be welded according to the shape of the steel plate, then press the upper fixture against the lower fixture, and welding can begin. After welding is complete, remove the upper fixture.

[0030] Using rotor blade welding fixtures greatly improves the product qualification rate; it also makes the welding process more convenient and faster for workers, improving production efficiency; even a worker with no welding experience for this product can easily get started welding and ensure a very high qualification rate.

[0031] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A sand making machine rotor blade welding tool, characterized in that: The fixture includes a lower fixture (1) and an upper fixture (2). The lower fixture (1) has a lower positioning plate (3) on its front and rear sides. The lower positioning plate (3) has a lower positioning groove (4) on its top. The upper fixture (2) has an upper positioning plate (5) on its front and rear sides. The upper positioning plate (5) has an upper positioning groove (6) on its bottom. The lower positioning groove (4) and the upper positioning groove (6) are joined together to form a limiting groove (7). The shape of the limiting groove (7) matches the vertical section of the rotor blade. The limiting groove (7) has a clearance groove (8) reserved at the welding point of the rotor blade.

2. The sand maker rotor blade welding tooling of claim 1, wherein: The two lower positioning plates (3) are parallel to each other, and the two upper positioning plates (5) are parallel to each other.

3. The sand mill rotor blade welding tooling of claim 2, wherein: the first and second welding jigs are configured to be welded together to form a first welding jig; and the third and fourth welding jigs are configured to be welded together to form a second welding jig. The two lower positioning plates (3) are connected on the left and right sides by the lower connecting plate (9), and the two upper positioning plates (5) are connected on the left and right sides by the upper connecting plate (10).

4. The sand mill rotor blade welding fixture of claim 1, wherein: The top of the upper tooling (2) is fixed with a top plate (11), and the top of the top plate (11) is fixed with an ear plate (12).

5. The welding fixture for the rotor blades of the sand making machine as described in claim 1, characterized in that: The upper positioning plate (5) has an upper positioning hole (13), and the upper positioning holes (13) on both sides are connected by upper positioning pins (14). The lower positioning plate (3) has a lower positioning hole (15), and the lower positioning holes (15) on both sides are connected by lower positioning pins (16).

6. The welding fixture for the rotor blades of the sand making machine as described in claim 1, characterized in that: The clearance groove (8) is an arc-shaped groove.

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