Locking mechanism for machining stators

Abstract

The present invention discloses a locking mechanism for processing a stator, comprising: a clamping unit, comprising a fixed jaw and a movable jaw capable of horizontally moving relative to the fixed jaw; a positioning unit, comprising a base located at the upper end of the clamping unit and a central axis passing through the center of the base and extending in the vertical direction, wherein the base is provided with a plurality of push rod units in its radial direction; a first positioning portion passing through the central axis and fixed to the central axis; an electromagnetic brake, comprising a brake body sleeved on the outer end of the first positioning portion and a control wire connected to the brake body; a rotary clutch connected to the lower end of the central axis. The present invention improves the alignment efficiency and thus improves the welding efficiency. In addition, each push rod unit can be controlled in an alignment state to achieve welding, so that the wire head can always be kept in a state of alignment with the connecting copper wire, thereby making the quality of the stator after welding more stable.

Description

Technical Field

[0001] The invention relates to the field of positioning devices, in particular to a locking mechanism used for machining stators. Background Art

[0002] In the motor production process, in order to simplify the difficulty of winding, there are usually more wire ends. For example, in this example, there are as many as 24 wire ends on a stator that need to be welded. When welding, the wire ends need to be abutted against the connecting copper sheets and the welding is completed in this state. The existing technology requires that individual wire ends be aligned one by one and then welded, resulting in a problem of low welding efficiency. In addition, because the wire ends are relatively small, even if the wire ends are aligned with the connecting copper sheets at a certain moment, it is difficult to ensure that this state is maintained during the welding process, which makes the quality of the stator after welding unstable. Summary of the invention

[0003] In order to overcome the defects in the prior art, an embodiment of the present invention provides a locking mechanism for machining a stator, which is used to solve one or more of the above problems.

[0004] The embodiment of the present application discloses: a locking mechanism for machining a stator, comprising: a clamping unit, the clamping unit comprising a fixed jaw and a movable jaw capable of horizontally moving relative to the fixed jaw, the opposite sides of the fixed jaw and the movable jaw being capable of abutting against the outer wall of a motor stator to fix the motor stator; a positioning unit, the positioning unit comprising a base located at the upper end of the clamping unit and a central axis penetrating the center of the base and extending in a vertical direction, a plurality of push rod units being arranged on the base in a radial direction thereof, the push rod units being capable of rotating with the base and abutting against one end of a wire head on the motor stator away from a connecting copper sheet; a first positioning portion, the first positioning portion being penetrating the central axis and fixed to the central axis, the first positioning portion being located below the clamping unit; an electromagnetic brake, the electromagnetic brake comprising a brake body sleeved on the outer end of the first positioning portion and a control wire connected to the brake body; a rotating clutch, the rotating clutch being connected to the lower end of the central axis; a rotating unit, the rotating unit being connected to the rotating clutch and capable of driving the rotating clutch to rotate.

[0005] Furthermore, the base is provided with a plurality of limit grooves extending radially along the base at intervals along its circumference; the push rod unit includes a limit rod and a limit portion connected to one end of the limit rod, each limit rod is placed in a different limit groove, the width of the limit rod in the horizontal direction is smaller than the width of the limit groove in the horizontal direction, the limit rod is rotatably connected to the base located on the inner side of the limit groove, and the limit portion is located outside the base.

[0006] Furthermore, a rubber buffer pad is included, and the rubber buffer pad is placed between adjacent limiting rods and abuts against the limiting rods.

[0007] Furthermore, the clamping unit includes a fixed guide shaft extending in a horizontal direction, the fixed guide shaft is passed through the fixed jaw, the first end of the fixed guide shaft extends out of the fixed jaw and is connected to the movable jaw, the second end of the fixed guide shaft is located outside the fixed jaw away from one end of the movable jaw, the second end is provided with a locking portion with a cross-sectional area larger than the cross-sectional area of ​​the fixed guide shaft, and the fixed guide shaft sleeve located between the locking portion and the fixed jaw is provided with a compression spring.

[0008] Furthermore, it comprises a fixing support, which is located at the lower end of the clamping unit, and the upper end of the fixing support is connected to the lower end of the clamping unit, so as to fix the clamping unit.

[0009] Furthermore, it includes a second positioning portion, which is sleeved on the central axis. The second positioning portion is located between the clamping unit and the brake body. The fixed support is provided with a limiting fixing screw. The second positioning portion is connected to a limiting fixing block extending radially along the central axis. The limiting fixing block can abut against the limiting fixing screw during the rotation of the second positioning portion.

[0010] Furthermore, the rotating unit is a rotating cylinder.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. Multiple push rod units can simultaneously achieve the effect of abutting different wire ends against the connecting copper sheet, thereby improving the alignment efficiency and then the welding efficiency. In addition, by powering off and on the electromagnetic brake, the locking and opening of the first positioning portion can be more easily achieved, so that each push rod unit can be controlled in an aligned state to achieve welding, so that the wire ends can always be kept in a state of alignment with the connecting copper wire, thereby making the quality of the stator after welding more stable.

[0013] 2. Multiple push rod units can simultaneously achieve the effect of abutting different wire ends against the connecting copper sheet, thereby improving the alignment efficiency and then the welding efficiency. During the positioning process, the limiting part gradually abuts against the side of the wire end away from the connecting copper sheet and pushes the wire end to abut against the connecting copper sheet, and each limiting part can be in this state at the same time, so that the wire end and the connecting copper sheet can have a better abutment effect, thereby making the quality of the stator after welding more stable.

[0014] 3. The relationship between each push rod unit and its corresponding limit groove can be made floating, so that when there is a deviation in the distance between different push rod units and their corresponding thread ends, the push rod position can be floated by the action of the rubber buffer pad, thereby achieving an automatic adjustment effect.

[0015] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic structural diagram of a stator in an embodiment of the present invention;

[0018] Figure 2 Detailed structural diagram of the stator in an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of a locking mechanism for machining a stator in an embodiment of the present invention at a first viewing angle;

[0020] Figure 4 is a schematic structural diagram of a locking mechanism for machining a stator in an embodiment of the present invention at a second viewing angle;

[0021] Figure 5 is a front view of a locking mechanism for machining a stator in an embodiment of the present invention;

[0022] Figure 6 is a cross-sectional view of a locking mechanism for machining a stator in an embodiment of the present invention;

[0023] Figure 7 is a schematic structural diagram of the positional relationship between the push rod unit and the base in an embodiment of the present invention;

[0024] The figure marks of the above drawings are: 1. stator; 11. wire end; 12. connecting copper sheet; 2. clamping unit; 21. fixed jaw; 22. movable jaw; 23. fixed guide shaft; 24. compression spring; 3. positioning unit; 31. base; 32. center axis; 33. push rod unit; 331. limit rod; 332. limit part; 4. first positioning part; 5. electromagnetic brake; 51. brake body; 52. control wire; 6. rotating clutch; 7. rubber buffer pad; 8. fixed support; 81. limit fixing screw; 9. second positioning part; 91. limit fixing block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 7 As shown, a locking mechanism for machining a stator 1 in this embodiment includes:

[0027] The clamping unit 2 includes a fixed jaw 21 and a movable jaw 22 that can move horizontally relative to the fixed jaw 21. The opposite sides of the fixed jaw 21 and the movable jaw 22 can abut against the outer wall of the motor stator 1 to fix the motor stator 1, so that the clamping unit 2 can achieve a better fixing effect on the motor stator 1 during the processing.

[0028] The positioning unit 3 comprises a base 31 located at the upper end of the clamping unit 2 and a central axis 32 passing through the center of the base 31 and extending in the vertical direction. The central axis 32 can be fixedly connected to the base 31. A plurality of push rod units 33 are arranged on the base 31 in its radial direction. The push rod units 33 can rotate with the base 31 and abut against one end of the wire head 11 located on the motor stator 1 away from the connecting copper sheet 12, so that when the central axis 32 drives and the base 31 to rotate, the push rod unit 33 can abut from one end of the wire head 11 away from the connecting copper sheet 12, and the push rod unit 33 can push the wire head 11 to abut against the connecting copper sheet 12.

[0029] The first positioning portion 4 is passed through the central shaft 32 and fixed to the central shaft 32 . The first positioning portion 4 is located below the clamping unit 2 , so that the first positioning portion 4 can rotate synchronously with the base 31 and the central shaft 32 .

[0030] The electromagnetic brake 5 includes a brake body 51 sleeved on the outer end of the first positioning part 4 and a control wire 52 connected to the brake body 51, so that the control wire 52 can drive the power on and off of the brake body 51. The brake body 51 can open the brake in the power-on state, so that the first positioning part 4 rotates with the central shaft 32, and the base 31 and the push rod unit 33 thereon rotate synchronously. The brake body 51 can be locked in the power-off state, so that the first positioning part 4 is synchronously locked with the brake, and then the rotation of the first positioning part 4 is stopped, and accordingly, the central shaft 32 and the base 31 connected to the central shaft 32 stop rotating synchronously.

[0031] The rotary clutch 6 is connected to the lower end of the central shaft 32 and is used to be connected to the rotating unit and drive the central shaft 32 to rotate.

[0032] The rotating unit is connected to the rotating clutch 6 and can drive the rotating clutch 6 to rotate. The rotating unit can drive the central axis 32 to rotate with the vertical direction as the axis, thereby also enabling the base 31 and the push rod unit 33 to rotate with the vertical direction as the axis.

[0033] In this embodiment, the stator 1 is arranged at the lower end of the push rod unit 33 , and each of the limiting portions 332 can be located on the side of the wire head 11 away from the connecting copper sheet 12 , and 24 push rod units 33 are arranged on the base 31 .

[0034] When the electromagnetic brake 5 is powered on, the brake body 51 is in an open state, the rotating unit drives the rotary clutch 6 to rotate, thereby causing the central shaft 32 to rotate synchronously, thereby causing the base 31 to rotate relative to the positioning, thereby causing the push rod unit 33 to rotate relative to the stator 1, and the rotation causes the push rod unit 33 to approach the wire head 11 close to it, thereby causing the push rod unit 33 to gradually abut against the side of the wire head 11 away from the connecting copper sheet 12 and push the wire head 11 to abut against the connecting copper sheet 12, thereby achieving a positioning effect. In this process, multiple push rod units 33 can simultaneously achieve the effect of abutting different wire heads 11 against the connecting copper sheet 12. In this state, the control wire 52 is de-energized, so that the electromagnetic brake 5 is in a locked state, thereby locking the first positioning part 4 and the electromagnetic brake 5 synchronously, thereby stopping the rotation of the first positioning part 4, and correspondingly, causing the central shaft 32 and the base 31 connected to the central shaft 32 to stop rotating synchronously. Thereby, the push rod unit 33 maintains the positioning effect on the wire end 11 , and in this state, the wire end 11 and the connecting copper sheet 12 are welded.

[0035] By means of the above structure, a plurality of push rod units 33 can simultaneously achieve the effect of abutting different wire ends 11 against the connecting copper sheet 12, thereby improving the alignment efficiency and further improving the welding efficiency. In addition, by powering off and on the electromagnetic brake 5, the locking and opening of the first positioning portion 4 can be more easily achieved, thereby enabling each push rod unit 33 to be controlled in an aligned state to achieve welding, thereby enabling the wire end 11 to be always kept in a state of alignment with the connecting copper wire, thereby making the quality of the stator 1 after welding more stable.

[0036] Specifically, the base 31 is provided with a plurality of limiting grooves extending radially along the base 31 at intervals along its circumference, and the limiting grooves are used to simultaneously accommodate a plurality of push rod units 33. The push rod unit 33 includes a limiting rod 331 and a limiting portion 332 connected to one end of the limiting rod 331, each limiting rod 331 is placed in a different limiting groove, the width of the limiting rod 331 in the horizontal direction is smaller than the width of the limiting groove in the horizontal direction, the limiting rod 331 is rotatably connected to the base 31 located inside the limiting groove, and the limiting portion 332 is located outside the base 31, so that each limiting rod 331 can rotate with the position where it is connected to the base 31 as the axis, and the limiting rod 331 can rotate relative to the base 31 in the limiting groove during the rotation process, so that the limiting portion 332 can rotate driven by the limiting rod 331. Preferably, the connecting axis between the limiting rod 331 and the base 31 extends in the vertical direction, so that the limiting rod 331 can rotate in the horizontal direction.

[0037] By means of the above structure, a plurality of push rod units 33 can simultaneously achieve the effect of abutting different wire ends 11 against the connecting copper sheet 12, thereby improving the alignment efficiency and further improving the welding efficiency. During the positioning process, the limiting portion 332 gradually abuts against the side of the wire end 11 away from the connecting copper sheet 12 and pushes the wire end 11 to abut against the connecting copper sheet 12, and each limiting portion 332 can be in this state at the same time, thereby achieving a better abutment effect between the wire end 11 and the connecting copper sheet 12, thereby making the quality of the stator 1 more stable after welding.

[0038] Specifically, it includes a rubber buffer pad 7, which is placed between adjacent limiting rods 331 and abuts against the limiting rods 331. The provision of the rubber buffer pad 7 allows the relationship between each push rod unit 33 and its corresponding limiting groove to float, so that when the distance between different push rod units 33 and their corresponding thread heads 11 deviates, the push rod position can float through the action of the rubber buffer pad 7, thereby achieving an automatic adjustment effect.

[0039] Specifically, the clamping unit 2 includes a fixed guide shaft 23 extending in the horizontal direction, the fixed guide shaft 23 is arranged inside the fixed jaw 21, the first end of the fixed guide shaft 23 extends out of the fixed jaw 21 and is connected to the movable jaw 22, the second end of the fixed guide shaft 23 is located outside the fixed jaw 21 away from the end of the movable jaw 22, the second end is provided with a clamping portion with a cross-sectional area larger than the cross-sectional area of ​​the fixed guide shaft 23, and the fixed guide shaft 23 located between the clamping portion and the fixed jaw 21 is sleeved with a compression spring 24. Therefore, under the action of the compression spring 24, the stator 1 placed between the fixed jaw 21 and the movable jaw 22 can achieve a better fixing effect, and in the process of the movable jaw 22 gradually moving away from the fixed jaw 21, the compression spring 24 is gradually compressed, so that the stator 1 can be taken and placed, and after taking and placing, the movable jaw 22 can be reset under the action of the compression spring 24.

[0040] Specifically, it includes a fixed support 8, the fixed support 8 is located at the lower end of the clamping unit 2, and the upper end of the fixed support 8 is connected to the lower end of the clamping unit 2, so as to fix the clamping unit 2. The setting of the fixed support 8 can make the setting of the clamping unit 2 more stable, thereby improving the stability of the stator 1 during the processing.

[0041] Specifically, it includes a second positioning portion 9, which is sleeved on the central axis 32, and is located between the clamping unit 2 and the brake body 51. The fixed support 8 is provided with a limited fixing screw 81, and the second positioning portion 9 is connected with a limited fixing block 91 extending radially along the central axis 32, and the limited fixing block 91 can abut against the limited fixing screw 81 during the rotation of the second positioning portion 9. Therefore, through the cooperation between the limited fixing screw 81 and the limited fixing block 91, the fixed support 8 can position the second positioning portion 9, thereby preventing the rotation angle between the second positioning portion 9 and the fixed support 8 from being too large, and further protecting the stator 1 located on the clamping unit 2.

[0042] Specifically, the rotating unit is a rotating cylinder. Since the rotating cylinder itself has a good reciprocating rotation effect within a small range, when the rotating unit composed of the rotating cylinder drives the base 31 to rotate, the base 31 and the push rod unit 33 can have a good reciprocating rotation effect, so that different stators 1 can be repeatedly positioned.

[0043] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A locking mechanism for machining a stator, characterized in that: include: A clamping unit, the clamping unit comprising a fixed clamping jaw and a movable clamping jaw capable of horizontally moving relative to the fixed clamping jaw, wherein opposite sides of the fixed clamping jaw and the movable clamping jaw can abut against an outer wall of a motor stator to fix the motor stator; A positioning unit, the positioning unit comprising a base located at the upper end of the clamping unit and a central axis passing through the center of the base and extending in the vertical direction, a plurality of push rod units are arranged on the base in the radial direction thereof, the push rod units can rotate with the base and abut against one end of the wire head on the motor stator away from the connecting copper sheet; A first positioning portion, the first positioning portion is passed through the central axis and fixed to the central axis, and the first positioning portion is located below the clamping unit; An electromagnetic brake, the electromagnetic brake comprising a brake body sleeved on the outer end of the first positioning portion and a control wire connected to the brake body; a rotary clutch connected to the lower end of the central shaft; A rotating unit, the rotating unit is connected to the rotating clutch and can drive the rotating clutch to rotate; The base is provided with a plurality of limiting grooves extending radially of the base at intervals along its circumference; The push rod unit includes a limiting rod and a limiting portion connected to one end of the limiting rod, each limiting rod is placed in a different limiting groove, the width of the limiting rod in the horizontal direction is smaller than the width of the limiting groove in the horizontal direction, the limiting rod is rotatably connected to the base located inside the limiting groove, and the limiting portion is located outside the base; Wherein, it also includes a rubber buffer pad, which is placed between adjacent limiting rods and abuts against the limiting rods.

2. The locking mechanism for machining a stator according to claim 1, characterized in that: The clamping unit includes a fixed guide shaft extending in a horizontal direction, the fixed guide shaft is passed through the interior of the fixed jaw, the first end of the fixed guide shaft extends out of the fixed jaw and is connected to the movable jaw, the second end of the fixed guide shaft is located outside the fixed jaw away from one end of the movable jaw, the second end is provided with a locking portion with a cross-sectional area larger than the cross-sectional area of ​​the fixed guide shaft, and the fixed guide shaft sleeve located between the locking portion and the fixed jaw is provided with a compression spring.

3. The locking mechanism for machining a stator according to claim 1, characterized in that: It comprises a fixing support, which is located at the lower end of the clamping unit, and the upper end of the fixing support is connected to the lower end of the clamping unit, so as to fix the clamping unit.

4. The locking mechanism for machining a stator according to claim 3, characterized in that: It includes a second positioning portion, which is sleeved on the central axis. The second positioning portion is located between the clamping unit and the brake body. The fixed support is provided with a limiting fixing screw. The second positioning portion is connected to a limiting fixing block extending radially along the central axis. The limiting fixing block can abut against the limiting fixing screw during the rotation of the second positioning portion.

5. The locking mechanism for machining a stator according to claim 1, characterized in that: The rotating unit is a rotary cylinder.

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