Stator welding auxiliary tool

Abstract

The stator welding auxiliary tool can effectively weld strip-shaped silicon steel sheets and comprises a positioning block and a support, a clamping groove used for clamping the strip-shaped silicon steel sheets is formed in the upper plate face of the positioning block, and the length of the clamping groove is smaller than that of the strip-shaped silicon steel sheets. The support supports the lower portion of the positioning block and presses the upper portion of the strip-shaped silicon steel sheet, and welding positions are formed in the areas on the two sides of the clamping groove. The clamping grooves are formed in the positioning blocks, the width of the clamping grooves is matched with that of the strip-shaped silicon steel sheets, displacement of the strip-shaped silicon steel sheets in the width direction is limited, it is guaranteed that the strip-shaped silicon steel sheets are stacked in order, meanwhile, the bottoms of the positioning blocks are supported by the supports, the upper portions of the strip-shaped silicon steel sheets are pressed, and the positions of the strip-shaped silicon steel sheets are limited in a lower-supporting and upper-pressing mode; and at the moment, the stacked strip-shaped silicon steel sheets are welded from the welding positions on the side surfaces to form the stator column.

Description

TECHNICAL FIELD

[0001] The utility model relates to stator welding technical field, concretely relates to a stator welding auxiliary tool. BACKGROUND

[0002] The core part of motor stator is formed by silicon steel sheet lamination, and then is welded into an integrated structure by welding process. The existing stator welding auxiliary tool is also for this kind of circular stamping part, and is stacked and welded after punching. However, for small-sized silicon steel sheets, especially small-sized silicon steel sheets in strip shape, the traditional welding auxiliary tool cannot effectively clamp and weld them, resulting in low yield. SUMMARY

[0003] The utility model discloses a kind of stator welding auxiliary tools that can effectively weld strip-shaped silicon steel sheet.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows: a stator welding auxiliary tool, comprising a positioning block and a support, the upper plate surface of the positioning block is provided with a clamping groove for clamping a strip-shaped silicon steel sheet, the length of the clamping groove is less than the length of the strip-shaped silicon steel sheet, and the support holds the lower part of the positioning block while pressing the strip-shaped silicon steel sheet above, and the two side regions of the clamping groove form a welding position.

[0005] Further, the clamping groove includes a group of clamping columns protruding from the upper plate surface of the positioning block, the group of clamping columns includes two clamping columns parallel to and perpendicular to the upper plate surface of the positioning block, and the two clamping columns and the upper plate surface of the positioning block enclose the clamping groove, the group of clamping columns is spaced apart in the length direction of the positioning block, and the clamping grooves formed by the multiple groups of clamping columns are collinear, and the area between adjacent groups of clamping columns also forms a welding position.

[0006] Further, the upper plate surface of the positioning block corresponding to the welding position is provided with a recess along the radial direction thereof, the recess extends from the edge of the positioning block to the bottom position of the strip-shaped silicon steel sheet, and the recess is provided on both sides of the positioning block and is not connected at the bottom of the strip-shaped silicon steel sheet.

[0007] Further, the recess is provided at least three positions corresponding to the two ends and the middle of the strip-shaped silicon steel sheet.

[0008] Further, the support is in the shape of U as a whole, including a bottom plate and a top plate arranged in parallel, one end of the bottom plate and the top plate is connected as a whole by a connecting plate, the lower plate surface of the top plate is provided with a pressing strip protruding downward, the length direction of the pressing strip is consistent with the length direction of the bottom plate, the lower plate surface of the positioning block is provided with a sliding groove, and the sliding groove is clamped on the bottom plate to form a sliding fit.

[0009] Further, the cross section of the pressing strip is in the shape of T, including a connecting strip fixed directly with the top plate and a pressing strip fixed below the connecting strip, the width of the connecting strip is consistent with the width of the clamping groove, and the width of the pressing strip is less than the width of the clamping groove.

[0010] Further, when the one end surface of the positioning block abuts against the connecting plate, the other end surface of the positioning block is flush with the end surface of the pressing strip, and the other end surface of the positioning block protrudes from the end surface of the bottom plate.

[0011] In the above scheme, the clamping groove is arranged on the positioning block, the width of the clamping groove is consistent with the width of the strip-shaped silicon steel sheet, the displacement of the strip-shaped silicon steel sheet in the width direction is limited, the multiple strip-shaped silicon steel sheets are ensured to be stacked in order, meanwhile, the bottom of the positioning block is supported by the support, and the strip-shaped silicon steel sheet above is also pressed, the position of the strip-shaped silicon steel sheet is limited by the way of supporting from below and pressing from above, at this time, the stacked strip-shaped silicon steel sheet is welded from the welding position on the side to form the stator column. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a whole structure schematic view of the stator welding auxiliary tool;

[0013] Figure 2 It is a structure schematic view of the positioning block;

[0014] Figure 3 It is a structure schematic view of the support;

[0015] Figure 4 It is an assembly schematic view of the stator welding auxiliary tool and the strip-shaped silicon steel sheet;

[0016] Figure 5 It is a sectional view of Figure 4 . DETAILED DESCRIPTION

[0017] The utility model will be further discussed in detail in combination with the drawings. Figures 1-5 A stator welding auxiliary tool, including positioning block 10 and support 20, the upper plate surface of positioning block 10 is provided with the clamping groove for clamping strip-shaped silicon steel sheet A, the length of clamping groove is less than the length of strip-shaped silicon steel sheet A, and support 20 supports the lower part of positioning block 10 while pressing the upper part of strip-shaped silicon steel sheet A, and the region of both sides of clamping groove constitutes welding position.

[0018]

[0019] ​Further, the clamping groove comprises clamping column groups 11 protrudingly arranged on the upper plate surface of the positioning block 10, the clamping column groups 11 comprise two clamping columns 111 parallel to and perpendicular to the upper plate surface of the positioning block 10, the two clamping columns 111 and the upper plate surface of the positioning block 10 enclose a clamping groove, the clamping column groups 11 are arranged in multiple groups in the length direction of the positioning block 10, and the clamping grooves formed by the multiple clamping column groups 11 are collinear, and the area between adjacent clamping column groups 11 also forms a welding position. The clamping groove is formed by the two parallel clamping columns 111 and the upper plate surface of the positioning block 10. If the length of the clamping column 111 is arranged as a whole, the middle position of the strip-shaped silicon steel sheet A cannot be welded. Therefore, the length of the clamping column 111 is arranged to be relatively short, and multiple clamping column groups 11 are arranged at intervals, so that a gap is left between adjacent clamping column groups 11 for welding operation by a welding gun.

[0020] A recess 12 is formed in the radial direction of the upper plate surface of the positioning block 10 corresponding to the welding position. The recess 12 provides a welding space for the head of the welding machine, and the recess 12 extends from the edge of the positioning block 10 to the bottom position of the strip-shaped silicon steel sheet A. The recess 12 is arranged on both sides of the positioning block 10 and the two recesses 12 are not connected at the bottom of the strip-shaped silicon steel sheet A. The non-connected part supports the bottom of the strip-shaped silicon steel sheet A, ensuring the stability of the position of the stacked strip-shaped silicon steel sheet A.

[0021] In order to ensure the welding effect, the recess 12 is arranged at least three times, corresponding to the two ends and the middle of the strip-shaped silicon steel sheet A. Only the two ends and the middle of the strip-shaped silicon steel sheet A are welded, can the connection strength of the stator column be ensured.

[0022] Further, the support 20 is in the shape of a U as a whole, comprising a bottom plate 21 and a top plate 22 arranged in parallel, one end of the bottom plate 21 and the top plate 22 is connected as a whole through a connecting plate 23, the lower plate surface of the top plate 22 protrudes downwardly and is provided with a pressing strip 24, the length direction of the pressing strip 24 is consistent with the length direction of the bottom plate 21, the lower plate surface of the positioning block 10 is provided with a sliding groove 13, the sliding groove 13 is clamped on the bottom plate 21 to form a sliding fit. The positioning block 10 is drawn into the U-shaped cavity of the support 20 through the sliding groove 12 to realize assembly. At this time, the bottom plate 21 supports the positioning block 20, and the pressing strip 24 on the top plate 22 presses the strip-shaped silicon steel sheet A. Only one operation is needed to define the position of the silicon steel sheet A.

[0023] Preferably, the pressing strip 24 is T-shaped in cross section, comprising a connecting strip 241 fixed directly to the top plate 22 and a pressing strip 242 fixed below the connecting strip 241, the width of the connecting strip 241 is consistent with the width of the clamping groove, and the width of the pressing strip 242 is smaller than the width of the clamping groove. That is, the connecting strip 241 only contacts a small part of the groove wall at the slot opening of the clamping groove, thereby playing a guiding role, and the pressing strip 242 is not in contact with the groove wall of the clamping groove, thereby reducing the friction, so that the positioning block 10 can be easily disassembled and assembled with the support 20.

[0024] When the one end surface of the positioning block 10 abuts against the connecting plate 23, the other end surface of the positioning block 10 is flush with the end surface of the pressing strip 24, and the strip-shaped silicon steel sheet A has no freedom in the length direction and can be axially displaced, after the positioning block 10 is moved to the position, the entire auxiliary tool can be stood up, the end surface of the positioning block 10 and the end surface of the pressing strip 24 are shaken on the table top for several times, so that the end surface of the strip-shaped silicon steel sheet A also reaches the flush state, and then the welding operation is implemented. The other end surface of the positioning block 10 protrudes from the end surface of the bottom plate 21, which facilitates the disassembly of the positioning block 10 after the welding is completed.

Claims

1. A stator welding auxiliary tool, characterized in that: The device includes a positioning block (10) and a support (20). The upper surface of the positioning block (10) is provided with a slot for holding a strip silicon steel sheet (A). The length of the slot is less than the length of the strip silicon steel sheet (A). The support (20) supports the lower part of the positioning block (10) while pressing the upper part of the strip silicon steel sheet (A). The areas on both sides of the slot form a welding position.

2. The stator welding fixture according to claim 1, characterized in that: The slot includes a set of clamping posts (11) protruding from the upper plate of the positioning block (10). The set of clamping posts (11) includes two clamping posts (111) with their plates parallel and perpendicular to the upper plate of the positioning block (10). The two clamping posts (111) and the upper plate of the positioning block (10) form a slot. The set of clamping posts (11) is arranged in multiple sets at intervals along the length of the positioning block (10), and the slot formed by the multiple sets of clamping posts (11) is collinear. The area between adjacent sets of clamping posts (11) also forms a welding position.

3. The stator welding fixture according to claim 2, characterized in that: The upper surface of the positioning block (10) corresponding to the welding position has a recess (12) along its radial direction. The recess (12) extends from the edge of the positioning block (10) to the bottom position of the strip silicon steel sheet (A). The recess (12) is provided on both sides of the positioning block (10) and the two recesses (12) are not connected at the bottom of the strip silicon steel sheet (A).

4. The stator welding fixture according to claim 3, characterized in that: The recess (12) is provided in at least 3 places, which correspond one-to-one with the two ends and the middle of the strip silicon steel sheet (A).

5. The stator welding fixture according to claim 1, characterized in that: The support (20) is U-shaped in general, including a bottom plate (21) and a top plate (22) arranged in parallel. One end of the bottom plate (21) and the top plate (22) are connected as one unit by a connecting plate (23). A pressure strip (24) is provided on the lower plate surface of the top plate (22). The length direction of the pressure strip (24) is consistent with the length direction of the bottom plate (21). A sliding groove (13) is provided on the lower plate surface of the positioning block (10). The sliding groove (13) is locked on the bottom plate (21) to form a sliding fit.

6. The stator welding fixture according to claim 5, characterized in that: The pressure strip (24) has a T-shaped cross section and includes a connecting strip (241) that is directly fixed to the top plate (22) and a pressing strip (242) that is fixed below the connecting strip (241). The width of the connecting strip (241) matches the width of the slot, and the width of the pressing strip (242) is smaller than the width of the slot.

7. The stator welding fixture according to claim 5, characterized in that: When one end face of the positioning block (10) abuts against the connecting plate (23), the other end face of the positioning block (10) is flush with the end face of the pressure strip (24), and the other end face of the positioning block (10) protrudes from the end face of the base plate (21).

Images