Automatic correcting and sheet aligning mechanism of large-specification special-shaped iron core welding tool

Abstract

The utility model relates to an automatic correcting and sheet aligning mechanism of a large-size special-shaped iron core welding tool, which comprises a lower supporting frame assembly, a lower pressing plate is arranged at the top of the lower supporting frame assembly, and a special-shaped iron core is placed at the top of the lower pressing plate. According to the automatic correcting and sheet aligning mechanism of the large-size special-shaped iron core welding tool, a plurality of thick sheet aligning rods which are good in rigidity and high in abrasion resistance are arranged at proper positions, close to the outside as much as possible, on the appearance of an iron core and are tightly attached to the side edge of the appearance of the iron core, the sheet aligning rods and an expansion core are fixed to an upper pressing plate together, and the length of the sheet aligning rods and the length of the expansion core are the same; when the expansion core is inserted into the iron core together with the plurality of sheet aligning rods from top to bottom, the iron core laminations can be easily corrected and aligned by the sheet aligning rods according to the moment principle, the farther the stress point for correcting the laminations is from the center point of the iron core, the smaller the force required for shifting the laminations is, the easier the correction is, the use of a user is facilitated, and the production efficiency is improved. And the practicability of the automatic correcting and aligning mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor iron core manufacturing, in particular to an automatic correction and alignment mechanism for a large-size special-shaped iron core welding tool. Background Art

[0002] In the process of making the motor core, for the core welding tooling with conventional structure, the neatness correction of the core laminations is usually achieved by inserting the key bar on the expansion core installed on the upper pressure plate into the inner circular groove of the core. When the expansion core equipped with the key bar is inserted into the inner hole of the core from top to bottom, the core laminations that are not completely close together will be corrected and aligned from top to bottom under the action of the expansion core and the key bar, and then the core will be pressed and welded. This action process is no problem for conventional small and medium-sized round cores.

[0003] However, for special-shaped (non-circular) cores with larger dimensions, it is difficult to adjust the neatness of the entire core laminations by moving the inner circular grooves of the core through the key strips on the expansion core due to their heavy weight, large contact surface between the laminations and the adhesion of punching and shearing oil. This will cause the core teeth to twist and deform, and it is also difficult to adjust the parts close to the outer shape other than the moving teeth. Therefore, an automatic alignment mechanism for large-sized special-shaped core welding tooling is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an automatic correction and alignment mechanism for a large-sized special-shaped iron core welding tool, which has the advantages that the core laminations can be easily corrected and aligned, thereby ensuring that the iron core meets the quality requirements, greatly improving the welding quality, and at the same time improving production efficiency and reducing manufacturing costs. It solves the problem that for special-shaped (non-circular) iron cores with larger dimensions, it is difficult to correct the neatness of the entire core laminations by moving the key strips on the expansion core to move the inner circle grooves of the core due to their own heavy weight and the presence of punching and shearing oil. At this time, the core teeth will be distorted and it is difficult to correct the part close to the shape other than the moving teeth.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic correction and alignment mechanism of a large-size special-shaped iron core welding tool, comprising a lower supporting frame assembly, a lower pressure plate is arranged on the top of the lower supporting frame assembly, a special-shaped iron core is placed on the top of the lower pressure plate, an upper connecting frame assembly is arranged on the top of the lower supporting frame assembly, a core expansion fixing plate is arranged on the bottom of the upper connecting frame assembly, an expanding core is arranged on the bottom of the expanding core fixing plate, an upper ejecting plate is arranged on the outside of the expanding core, an upper pressure plate is arranged on the bottom of the upper ejecting plate, an upper ejecting rod is arranged on the upper ejecting plate, and an alignment rod is arranged inside the upper ejecting plate.

[0006] Furthermore, the lower support frame assembly is used to fix the lower pressure plate and is installed on the working panel of the hydraulic press.

[0007] Furthermore, the lower pressing plate is used to support and position the special-shaped iron core to be welded.

[0008] Furthermore, the number of the sheet-aligning rods is five and they are distributed on the upper connecting frame assembly.

[0009] Furthermore, the number of the upper ejector rods is two and they are symmetrically distributed on the upper ejector plate.

[0010] Furthermore, the expansion core fixing plate is used to accurately fix the expansion core and the sheet alignment rod.

[0011] Furthermore, the upper connecting frame assembly is used to connect the expansion core fixing plate and is installed on the upper pressure plate of the hydraulic press, and transmits the pressure of the hydraulic press to the upper ejector plate and the upper pressure plate when pressing down.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The automatic correction and alignment mechanism of the large-size special-shaped iron core welding tooling arranges multiple thick alignment rods with good rigidity and high wear resistance at appropriate positions as close to the outside as possible on the shape of the iron core, close to the side of the shape of the iron core. The alignment rods and the expansion core are fixed on the upper pressure plate together, and the two have the same length. When the expansion core is inserted into the iron core from top to bottom with the multiple alignment rods, the iron core laminations can be easily corrected by the alignment rods (according to the torque principle, the farther the force point for adjusting the laminations is from the center point of the iron core, the smaller the force required to adjust the laminations is, and the correction is easier), which is convenient for users and increases the practicality of the automatic correction and alignment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a top view of the special-shaped iron core structure of the utility model;

[0016] Figure 3 This is a schematic structural diagram of a state in which a special-shaped iron core to be welded has been inserted with a core expansion rod and a sheet alignment rod and is pressed by an upper pressing plate.

[0017] In the figure: 1. Lower support frame assembly; 2. Lower pressure plate; 3. Special-shaped iron core; 4. Expanding core; 5. Alignment rod; 6. Upper pressure plate; 7. Upper ejection plate; 8. Upper ejection rod; 9. Expanding core fixing plate; 10. Upper connecting frame assembly. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 In this embodiment, a large-size special-shaped iron core welding tooling automatic correction and alignment mechanism includes a lower support frame assembly 1, a lower pressure plate 2 is arranged on the top of the lower support frame assembly 1, the lower support frame assembly 1 is used to fix the lower pressure plate 2 and is installed on the working panel of the hydraulic press, a special-shaped iron core 3 is placed on the top of the lower pressure plate 2, and the lower pressure plate 2 is used to support and position the special-shaped iron core 3 to be welded.

[0020] It should be noted that the lower support frame assembly 1 is used to fix the lower pressing plate 2 and is installed on the working panel of the hydraulic press. The shaped iron core 3 to be welded is placed on the lower pressing plate 2, and the lower pressing plate 2 supports and positions the shaped iron core 3.

[0021] In this embodiment, an upper connecting frame assembly 10 is provided on the top of the lower supporting frame assembly 1. The number of the sheet-aligning rods 5 is five and they are distributed on the upper connecting frame assembly 10. The upper connecting frame assembly 10 is used to connect the expansion core fixing plate 9 and is installed on the upper pressure plate 6 of the hydraulic press. At the same time, the pressure of the hydraulic press is transmitted to the upper ejector plate 7 and the upper pressure plate 6 when pressing down.

[0022] An expansion core fixing plate 9 is provided at the bottom of the upper connecting frame assembly 10, and the expansion core fixing plate 9 is used to accurately fix the expansion core 4 and the sheet-aligning rod 5. An expansion core 4 is provided at the bottom of the expansion core fixing plate 9, and an upper ejection plate 7 is provided on the outer side of the expansion core 4. There are two upper ejection rods 8 and they are symmetrically distributed on the upper ejection plate 7. An upper pressing plate 6 is provided at the bottom of the upper ejection plate 7, an upper ejection rod 8 is provided on the upper ejection plate 7, and an sheet-aligning rod 5 is provided inside the upper ejection plate 7.

[0023] It should be noted that, when the aligning rod 5 cooperates with the expansion core 4 to insert the special-shaped iron core 3, the iron core laminations are aligned from the outer side of the special-shaped iron core 3 to ensure that the iron core is not misaligned.

[0024] Specifically, a plurality of thick aligning rods with good rigidity and high wear resistance are arranged at appropriate positions as close to the outside as possible on the shape of the core, close to the side of the core shape, and the aligning rods and the expansion core are fixed together on the upper pressure plate, and the two have the same length. Then, when the expansion core is inserted into the core from top to bottom together with the plurality of aligning rods, the core laminations can be easily aligned by the aligning rods. According to the torque principle, the farther the force point for adjusting the laminations is from the center point of the core, the smaller the force required to adjust the laminations, and the easier it is to correct, which is convenient for users to use and increases the practicality of the automatic alignment mechanism.

[0025] The working principle of the above embodiment is:

[0026] This large-size special-shaped iron core welding tool has an automatic correction mechanism for aligning the pieces.

[0027] 1) The lower support frame assembly 1 is used to fix the lower pressure plate 2 and is installed on the working panel of the hydraulic press. The special-shaped iron core 3 to be welded is placed on the lower pressure plate 2. The lower pressure plate 2 supports and positions the special-shaped iron core 3. The expansion core 4 is inserted into the inner hole of the special-shaped iron core 3 to make the stacked sheets of the special-shaped iron core 3 neat and not misaligned, and ensure the verticality of the inner hole of the iron core and the end face.

[0028] 2) When the aligning rod 5 is inserted into the special-shaped iron core 3 together with the expanding core 4, the core laminations are aligned from the outer side of the special-shaped iron core 3 to ensure that the core is not misaligned. The upper pressure plate 6 applies a uniform downward pressure on the top surface of the special-shaped iron core 3 to achieve the optimal state required for welding the special-shaped iron core 3. The expanding core 4 and the aligning rod 5 are accurately fixed by the expanding core fixing plate 9.

[0029] 3) The expansion core fixing plate 9 is connected through the upper connecting frame assembly 10 and installed on the upper pressure plate 6 of the hydraulic press. At the same time, the pressure of the hydraulic press is transmitted to the upper ejector plate 7 and the upper pressure plate 6 when pressing down, so that the iron core is pressed tightly. After the iron core welding is completed, the welded special-shaped iron core 3 can be ejected from the expansion core 4 through the upper ejector rod 8 through the upper ejector plate 7.

[0030] 4) Arrange a plurality of thick aligning rods 5 with good rigidity and high wear resistance close to the outer side of the special-shaped iron core 3, and fix the aligning rods 5 and the expansion core 4 together on the upper pressure plate 6, and the lengths of the two are the same. When the expansion core 4 is inserted into the iron core from top to bottom together with the plurality of aligning rods 5, the laminations of the special-shaped iron core 3 can be easily corrected by the aligning rods 5 (according to the torque principle, the farther the force point for adjusting the laminations is from the center point of the special-shaped iron core 3, the smaller the force required to adjust the laminations is, and the easier it is to correct). This is convenient for users to use and increases the practicality of the automatic alignment mechanism.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic alignment mechanism for welding large-size special-shaped iron cores, comprising a lower support frame assembly (1), characterized in that: A lower pressure plate (2) is arranged on the top of the lower support frame assembly (1), a special-shaped iron core (3) is placed on the top of the lower pressure plate (2), an upper connecting frame assembly (10) is arranged on the top of the lower support frame assembly (1), an expanding core fixing plate (9) is arranged on the bottom of the upper connecting frame assembly (10), an expanding core (4) is arranged on the bottom of the expanding core fixing plate (9), an upper ejecting plate (7) is arranged on the outer side of the expanding core (4), an upper pressure plate (6) is arranged on the bottom of the upper ejecting plate (7), an upper ejecting rod (8) is arranged on the upper ejecting plate (7), and a sheet alignment rod (5) is arranged inside the upper ejecting plate (7).

2. According to claim 1, the automatic alignment mechanism for welding tooling for large-sized special-shaped iron cores is characterized by: The lower support frame assembly (1) is used to fix the lower pressing plate (2) and is installed on the working panel of the hydraulic press.

3. According to claim 1, the automatic alignment mechanism for welding tooling for large-sized special-shaped iron cores is characterized by: The lower pressing plate (2) is used to support and position the special-shaped iron core (3) to be welded.

4. According to claim 1, the automatic alignment mechanism for welding tooling for large-sized special-shaped iron cores is characterized by: The sheet-aligning rods (5) are five in number and are distributed on the upper connecting frame assembly (10).

5. According to claim 1, the automatic alignment mechanism for welding tooling for large-size special-shaped iron cores is characterized by: The number of the upper ejection rods (8) is two and they are symmetrically distributed on the upper ejection plate (7).

6. The automatic alignment mechanism for large-size special-shaped iron core welding tooling according to claim 1 is characterized in that: The expansion core fixing plate (9) is used to accurately fix the expansion core (4) and the sheet alignment rod (5).

7. The automatic alignment mechanism for large-size special-shaped iron core welding tooling according to claim 1 is characterized by: The upper connecting frame assembly (10) is used to connect the expansion core fixing plate (9) and is installed on the upper pressing plate (6) of the hydraulic press, and transmits the pressure of the hydraulic press to the upper ejecting plate (7) and the upper pressing plate (6) when pressing downward.

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