Winding stator cooling cycle welding positioning clamping tool, winding stator tool

Abstract

The application discloses a cooling circulating welding positioning clamping tool for a winding stator and a winding stator tool, and the tool comprises a center column cover (7), a center support cylinder sleeve (9), an outer ring (5), a small piece bolt (3), an outer ring sealing plate (2) and a rotating welding small piece (1). In the process of welding positioning, the rotating welding small piece (1) is rotated to drive the small piece bolt (3) to rotate to the limiting position of the outer ring (5) at the same time. In the process of cooling circulation, water flows into the bottom of the center support cylinder sleeve (9) and flows out from the top of the center support cylinder sleeve (9), and the water flows into the outer ring sealing plate (2) and is discharged. Through the application, not only the clamping positioning is realized, but also the water flow circulation is realized to locally radiate heat.

Description

Technical Field

[0001] This application relates to the field of clamping fixture technology, and in particular to a cooling circulation welding positioning clamping fixture and a winding stator fixture. Background Technology

[0002] After the square conductor stator of the new energy vehicle motor is twisted, the twisted side of the stator needs to be welded. According to the welding process and production efficiency requirements, the positioning clamping and cooling of the hairpin copper wire are not separated during the welding process to ensure welding efficiency and quality.

[0003] In related technologies, two plates, an upper plate and a lower plate, are used to directly clamp the product. The cooling method is air cooling. The usage method is to rotate the upper plate while fixing the lower plate to clamp the stator product.

[0004] However, in the current welding process, the tooling does not consider heat dissipation, which can damage the copper wire insulation layer and cause the product quality to fail to meet process requirements. Furthermore, the clamping process during welding uses a rotating clamping method with upper and lower plates, which requires high consistency in incoming materials and is prone to clamping defects, leading to rework of welded products and reducing production efficiency. Utility Model Content

[0005] This application provides a cooling circulation welding positioning clamping fixture and a winding stator fixture to clamp and position the hairpin by rotating the welding piece. During the welding process, local high temperatures are generated when welding the copper wire of the hairpin. A water circulation method is used to protect the insulation layer of the copper wire of the hairpin, thus protecting the insulation layer from damage and improving product quality and production efficiency.

[0006] The embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, embodiments of this application provide a cooling circulation welding positioning clamping fixture for a winding stator, wherein the fixture includes: a center column cover (7), a center support cylinder sleeve (9), an outer ring (5), a small pin (3), an outer ring sealing plate (2), and a rotating welding piece (1). The center column cover (7) is disposed in the center support cylinder sleeve (9), the outer ring (5) is disposed on the outer ring sealing plate (2), and the small pin (3) rotates with the rotating welding piece (1).

[0008] During the welding positioning process, by rotating the rotating welding piece (1), the piece pin (3) is driven to rotate to the limit position of the outer ring (5);

[0009] During the cooling cycle, water enters from the bottom of the central support cylinder liner (9), flows out from the top of the central support cylinder liner (9), and enters the outer ring seal plate (2) for discharge.

[0010] In some embodiments, the rotary welding piece (1) comprises a plurality of pieces, and each of the rotary welding pieces (1) has a trapezoidal groove.

[0011] In some embodiments, the outer ring sealing plate (2) is further provided with a groove.

[0012] In some embodiments, the groove has a drainage hole.

[0013] In some embodiments, the rotary welding piece (1) includes a head hole, an inner hole, and a tail hole, with water flowing from the head hole into the inner hole and then out from the tail hole.

[0014] In some embodiments, a plurality of sealing rings are also included.

[0015] In some embodiments, the sealing ring includes a first sealing ring (4) disposed near the small piece pin (3) or the outer ring (5).

[0016] In some embodiments, the sealing ring includes a second sealing ring (6) disposed near the central post cap (7).

[0017] In some embodiments, the sealing ring includes a third sealing ring (8) disposed near the central support cylinder liner (9).

[0018] Secondly, embodiments of this application also provide a winding stator fixture, which includes the cooling circulation welding positioning clamping fixture for the winding stator described in the first aspect.

[0019] The above-mentioned technical solutions adopted in the embodiments of this application can achieve the following beneficial effects: The tooling includes: a central column cover (7), a central support cylinder sleeve (9), an outer ring (5), a small piece pin (3), an outer ring sealing plate (2), and a rotating welding piece (1). The central column cover (7) is disposed in the central support cylinder sleeve (9), the outer ring (5) is disposed on the outer ring sealing plate (2), and the small piece pin (3) rotates with the rotating welding piece (1). The tooling mechanism for welding hairpin stators using water flow circulation and a sealed design locally cools the clamping part during the welding process, protecting the copper wire insulation layer from damage. During the welding positioning process, by rotating the rotating welding piece (1), the small piece pin (3) is driven to rotate simultaneously to the limit position of the outer ring (5); during the cooling circulation process, water flows in from the bottom of the central support cylinder sleeve (9), flows out from the top of the central support cylinder sleeve (9), and flows into the outer ring sealing plate (2) for discharge. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a cross-sectional schematic diagram of the cooling cycle welding positioning and clamping fixture for the winding stator in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the water circulation of the cooling cycle welding positioning clamping fixture for the winding stator in the embodiments of this application;

[0023] Figure 3 This is a schematic diagram showing the completion of the tooling clamping of the cooling cycle welding positioning clamping fixture for the winding stator in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the welding loosening of the cooling cycle welding positioning clamping tool for the winding stator in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the welding and clamping fixture for the cooling cycle welding positioning and clamping of the winding stator in the embodiments of this application;

[0026] Figure 6 This is a schematic diagram of the rotating welding piece of the cooling cycle welding positioning clamping fixture for the winding stator in the embodiments of this application.

[0027] Among them, 1-rotary welding piece, 2-outer ring sealing plate, 3-small piece pin, 4-D15x2.4 fluororubber O-ring seal, 5-outer ring, 6-D5x1 fluororubber O-ring seal, 7-center column cover, 8-AS568-132 sealing O-ring, 9-center support cylinder liner. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0030] This application provides a cooling cycle welding positioning and clamping fixture for a winding stator, such as... Figure 1The diagram shows a cross-sectional view of the cooling cycle welding positioning clamping fixture for the winding stator according to an embodiment of this application. The fixture includes: a center column cover 7, a center support cylinder sleeve 9, an outer ring 5, a small pin 3, an outer ring sealing plate 2, and a rotating welding piece 1. The center column cover 7 is disposed in the center support cylinder sleeve 9, and the outer ring 5 is disposed on the outer ring sealing plate 2. The small pin 3 rotates with the rotating welding piece 1. During the welding positioning process, by rotating the rotating welding piece 1, the small pin 3 is simultaneously rotated to the limit position of the outer ring 5. During the cooling cycle, water enters from the bottom of the center support cylinder sleeve 9 and flows out from the top of the center support cylinder sleeve 9, and the water flows into the outer ring sealing plate 2 and is discharged. The tooling mainly includes a central column cover 7, a central support cylinder sleeve 9, an outer ring 5, a small pin 3, an outer ring sealing plate 2, and a rotating welding piece 1. The specific structure includes the central column cover 7 being installed in the central support cylinder sleeve 9, the outer ring 5 being installed on the outer ring sealing plate 2, and the small pin 3 rotating with the rotating welding piece 1.

[0031] When positioning and clamping the hairpin on the twisted side, the rotating welding piece 1 of the welding fixture rotates 90 degrees during welding to clamp the hairpin, ensuring stability during welding, improving the automation level of the motor production process, and increasing motor production efficiency. It also solves the problem of high-temperature damage to the copper wire insulation layer during welding: after the rotating welding piece 1 of the welding fixture positions and clamps the hairpin during welding, the stator product is cooled by water cooling. Figure 2 As shown, water circulates internally within the rotating welding piece 1 of the welding fixture during welding, effectively cooling the copper wire hairpin and improving the motor manufacturing quality. This fixture allows for complete positioning and clamping of the hairpin copper wire, as detailed below. Figure 3 , 4 As shown in Figure 5.

[0032] During the welding positioning process described above, rotating the rotating welding piece 1 causes the small piece pin 3 to simultaneously rotate to the limiting position of the outer ring 5; rotating the rotating welding piece 1 can cause the small piece pin 3 to simultaneously rotate to the limiting position of the outer ring 5 for clamping. Specifically, the flowchart for clamping the hairpin copper wire is as follows: the preceding process equipment automatically rotates the hexagonal head → inserts the rotating welding piece 1 into the hexagonal hole → rotates 90 degrees clockwise → positioning and clamping the hairpin copper wire is completed.

[0033] In the cooling cycle described above, water enters from the bottom of the central support cylinder sleeve 9 and flows out from the top of the central support cylinder sleeve 9. The water then enters the outer ring sealing plate 2 and exits. Specifically, the water circulation process includes: water supply through connection between the welding equipment and tooling → flow into the central support steel sleeve 9 → flow into the hollow Φ2 elongated hole of the rotating welding piece 1 → flow into the outer ring sealing plate 2 → connection between the welding equipment and the outer ring sealing plate 2 of the tooling → water recycling. Through the above tooling, water circulation provides localized heat dissipation for the hairpin copper wire, resulting in precise heat dissipation and better protection of the enamel insulation layer. Furthermore, it minimizes damage to parts and extends their service life.

[0034] Using the aforementioned tooling, the hairpin is clamped and positioned by rotating the welding piece. During the welding process, local high temperatures are generated when welding the copper wire of the hairpin. A water circulation method is used to protect the insulation layer of the copper wire, thus protecting the insulation layer from damage and improving product quality and production efficiency.

[0035] In one embodiment of this application, the rotary welding piece 1 includes a plurality of pieces, and each of the rotary welding pieces 1 has a trapezoidal groove.

[0036] The preceding process equipment automatically rotates a hexagonal head, inserts it into the hexagonal hole of the rotating welding piece 1, and rotates 90 degrees to position and clamp the hairpin copper wire. The clamping method is as follows: Figure 6 As shown, the trapezoidal groove design at the upper end of the head of the rotary welding piece 1 allows for fault-tolerant clamping of the copper wire in the hairpin. Figure 1 As shown, the trapezoidal groove at the head of the rotating welding piece 1 is clamped to the arc surface at the same time. After rotating 90 degrees, the small piece pin 3 rotates with the rotating welding piece 1. The small piece pin 3 rotates to the outer ring slot 5 for hard limiting, thereby achieving positioning and clamping of the hairpin copper wire.

[0037] In one embodiment of this application, the outer ring sealing plate 2 is further provided with a groove.

[0038] The groove provided in the outer ring sealing plate 2 can form a water channel, thereby draining water during the cooling cycle.

[0039] In one embodiment of this application, the groove has a drainage hole.

[0040] During the cooling cycle, water flows into the groove of the outer ring sealing plate 2. The groove has three drainage holes, forming a water circulation process. The discharged water is recycled by the equipment.

[0041] In one embodiment of this application, the rotary welding piece 1 includes a head hole, an inner hole, and a tail hole, with water flowing from the head hole into the inner hole and then out from the tail hole.

[0042] The water flows smoothly into the hole with a diameter of Φ2 at the head of the rotary welding piece 1, passes through the elongated hole with a diameter of Φ2 inside the rotary welding piece 1, and flows out from the hole with a diameter of Φ3 at the tail of the rotary welding piece 1.

[0043] Specifically, the internal hollow Φ2 elongated hole of the rotary welding piece 1 provides a water flow channel for water circulation cooling. The application of water circulation welding fixture cooling channel technology protects the structural design and sealing design of the hollow water channel inside the rotary welding piece. The welding fixture achieves water circulation for local heat dissipation, protecting the hairpin copper wire insulation layer from high temperature damage.

[0044] In one embodiment of this application, a plurality of sealing rings are also included.

[0045] After the copper wire is positioned and clamped, the welding fixture is transferred to the welding equipment station. The water cooling mechanism automatically connects to the fixture to perform water cooling circulation. The water circulation circuit diagram is shown below. Figure 2 As shown, the water first enters from the bottom of the central support cylinder liner 9 and flows out from the top of the central support cylinder liner 9 through a Φ3 diameter hole. Multiple sealing rings play a sealing role, preventing the water from flowing outside the tooling.

[0046] In one embodiment of this application, the sealing ring includes a first sealing ring 4, which is disposed near the small piece pin 3 or the outer ring 5.

[0047] By using the D15x2.4 fluororubber O-ring seal around the small pin 3 or the outer ring 5, water leakage from the small pin 3 or the outer ring 5 can be prevented.

[0048] In one embodiment of this application, the sealing ring includes a second sealing ring 6, which is disposed near the central post cap 7.

[0049] The water flows out from the Φ3 diameter hole at the top of the central support steel sleeve 9. The D5x16 fluororubber O-ring can play a sealing role, preventing water from flowing out of the tooling.

[0050] In one embodiment of this application, the sealing ring includes a third sealing ring 8, which is disposed near the central support cylinder liner 9.

[0051] The AS568-132 sealing O-ring 8 prevents water from overflowing near the center support cylinder liner 9.

[0052] This application also provides a winding stator fixture, which includes the aforementioned cooling circulation welding positioning and clamping fixture for the winding stator. The fixture includes: a center column cover 7, a center support cylinder sleeve 9, an outer ring 5, a small pin 3, an outer ring sealing plate 2, and a rotating welding piece 1. The center column cover 7 is disposed in the center support cylinder sleeve 9, the outer ring 5 is disposed on the outer ring sealing plate 2, and the small pin 3 rotates with the rotating welding piece 1.

[0053] During the welding positioning process, by rotating the rotating welding piece 1, the piece pin 3 is driven to rotate simultaneously to the limit position of the outer ring 5.

[0054] During the cooling cycle, water enters from the bottom of the central support cylinder liner 9, flows out from the top of the central support cylinder liner 9, and enters the outer ring seal plate 2 for discharge.

[0055] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A cooling circulation welding positioning and clamping fixture for a winding stator, wherein, The tooling includes: a central column cover (7), a central support cylinder sleeve (9), an outer ring (5), a small pin (3), an outer ring sealing plate (2), and a rotating welding piece (1). The central column cover (7) is disposed in the central support cylinder sleeve (9), the outer ring (5) is disposed on the outer ring sealing plate (2), and the small pin (3) rotates with the rotating welding piece (1). During the welding positioning process, by rotating the rotating welding piece (1), the piece pin (3) is driven to rotate to the limit position of the outer ring (5); During the cooling cycle, water enters from the bottom of the central support cylinder liner (9), flows out from the top of the central support cylinder liner (9), and enters the outer ring seal plate (2) for discharge.

2. The tooling as described in claim 1, wherein, The rotary welding piece (1) includes multiple pieces, and each of the rotary welding pieces (1) has a trapezoidal groove.

3. The tooling as described in claim 1, wherein, The outer ring sealing plate (2) is also provided with a groove.

4. The tooling as described in claim 3, wherein, The groove has a drainage hole.

5. The tooling as described in claim 1, wherein, The rotary welding piece (1) includes a head hole, an inner hole, and a tail hole. Water flows from the head hole into the inner hole and then flows out from the tail hole.

6. The tooling as described in claim 1, wherein, It also includes multiple sealing rings.

7. The tooling as described in claim 6, wherein, The sealing ring includes a first sealing ring (4), which is located near the small piece pin (3) or the outer ring (5).

8. The tooling as described in claim 6, wherein, The sealing ring includes a second sealing ring (6), which is located near the central column cap (7).

9. The tooling as described in claim 6, wherein, The sealing ring includes a third sealing ring (8), which is located near the central support cylinder liner (9).

10. A winding stator fixture, wherein, Includes the cooling cycle welding positioning clamping fixture for the winding stator as described in any one of claims 1 to 9.

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