Enameled wire clamping device for detecting integrity of paint film of U-shaped enameled wire

Abstract

The enameled wire clamping device comprises a base, a support and a supporting rod, the base comprises a hollow metal frame body with an upward opening, a steel ball cluster is arranged in an inner cavity of the frame body, a plurality of insulating supporting columns and a grounding pin are arranged on the bottom surface of the frame body, and the insulating supporting columns and the grounding pin are arranged on the bottom surface of the frame body. The support comprises two transverse rods and at least two vertical rods, at least one vertical rod is provided with a graduated scale in the length direction of the vertical rod, any transverse rod is provided with a transverse through groove and a longitudinal through groove, at least one screw hole is formed in the side wall of each transverse rod, a fastening bolt is arranged on each screw hole, and threaded sections are arranged at the two ends of the supporting rod respectively. The beneficial effects of the utility model are that the installation efficiency and the detection efficiency of the enameled wire are improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a fixing device, in particular to an enameled wire clamping device used for detecting the integrity of a U-shaped enameled wire paint film. Background Art

[0002] With the rapid development of the new energy vehicle industry, automotive motors are shifting from traditional round wire motors to flat wire motors. Flat wire motors offer high slot fill rates, low noise, and improved motor performance. Flat copper wire has gradually become a common core material in the motor industry. Commonly used enameled wire consists of an inner copper wire and an insulating layer covering the copper wire. After the forming process, the copper wire is bent and twisted, which can cause the insulation layer to break, necessitating testing of the enameled wire's paint film integrity.

[0003] To test the paint film integrity of enameled wire, a spark detector is commonly used to perform leakage testing at the corners and bends of the formed enameled wire. Before testing, the wire legs must be grounded and fixed in a clamping device, and then a probe brush must be swept over the bends. The existing clamping devices are not universally compatible with enameled wires of varying specifications, and the number of samples clamped at a time is limited, resulting in low testing efficiency. Furthermore, the paint film on each wire leg must be pierced individually before testing, making the testing process cumbersome. Utility Model Content

[0004] The purpose of the present utility model is to provide an enameled wire clamping device for detecting the integrity of the paint film of a U-shaped enameled wire. The enameled wire clamping device for detecting the integrity of the paint film of a U-shaped enameled wire is intended to solve the technical problems of low clamping efficiency and low detection efficiency in the prior art for detecting the integrity of the paint film of a U-shaped enameled wire.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A U-shaped enameled wire clamping device for detecting the paint film integrity of the enameled wire includes a base, a bracket, and a support rod. The base includes a hollow metal frame with an opening upward, the bottom of the inner cavity of the frame is filled with a cluster of steel balls, and the bottom surface of the frame is provided with an insulating support column and a grounding pin. The bracket includes two cross bars and at least two vertical bars. The vertical bars are respectively arranged on the left and right sides of the frame. The bottom of any one of the vertical bars is connected to the side wall of the frame. Any one of the vertical bars is arranged along the height direction. The two cross bars are respectively arranged above the left and right sides of the frame. The cross bar and the vertical bar constitute a sliding pair along the axial direction of the vertical bar. The cross bar is provided with a support rod, and the number of the support rod is at least one.

[0007] Furthermore, any one of the cross bars is provided with a transverse slot and a longitudinal slot, the upper portion of the vertical bar passes through the longitudinal slot, and both ends of the support bar pass through the transverse slots of the two cross bars respectively.

[0008] Furthermore, a screw hole is provided in the end face of one end of the cross bar, the screw hole is connected to the longitudinal through groove, a fastening bolt is provided on the screw hole, threaded sections are provided at both ends of the support rod, and fastening nuts are provided at both ends of the support rod.

[0009] Furthermore, at least one of the vertical poles is provided with a scale along its length.

[0010] Furthermore, the number of the support columns is four, and the support columns are arranged along a rectangle on the bottom surface of the frame.

[0011] Furthermore, the support rod is provided with a plurality of convex rings at equal intervals along its axial direction, and any of the convex rings protrudes outward along the circumferential direction.

[0012] Furthermore, the number of the vertical poles is four, the number of the support poles is two, and the two vertical poles are respectively close to the two ends of the transverse through slot.

[0013] Furthermore, the spacing between any adjacent protruding rings is millimeters.

[0014] Furthermore, the tops of the two upright poles on the left and right sides of the frame are connected by a connecting rod.

[0015] Furthermore, a step is provided between the threaded section of the support rod and the main body of the support rod, so that the threaded section of the support rod can pass through the cross bar, while the main body of the support rod cannot pass through the cross bar and stops on the inner side of the cross bar.

[0016] Working principle:

[0017] The utility model includes a metal frame, in which a steel ball cluster is arranged. A support rod is placed horizontally above the frame through a bracket, and the U-shaped enameled wire to be tested is hung on the support rod, and the end of the enameled wire is inserted into the steel ball cluster. By using the steel ball cluster as a conductive medium, the steel ball cluster can directly contact the exposed end of the enameled wire without piercing the paint film, thereby simplifying the installation steps when testing the enameled wire. Through the transverse and longitudinal grooves of the horizontal rod in the bracket, the height of the support rod can be adjusted, and the distance between the two support rods can also be adjusted, so as to adapt to enameled wires of different specifications, so that enameled wires of different specifications can be stably clamped and fixed. At the same time, dozens of samples can be clamped on the support rod at the same time, thereby improving the detection efficiency.

[0018] Compared with the prior art, the beneficial effects of the present invention are: improving the installation efficiency and detection efficiency of the enameled wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of Example 1 of an enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to the present invention.

[0020] Figure 2 This is a schematic diagram of Example 2 of an enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to the present invention.

[0021] Figure 3 yes Figure 2 A magnified schematic diagram of . DETAILED DESCRIPTION

[0022] Example 1

[0023] See also Figure 1 , the utility model provides a technical solution:

[0024] A U-shaped enameled wire film integrity detection enameled wire clamping device includes a base, a bracket, and a support rod 4. The base includes a hollow metal frame 1 with an opening upward. The bottom of the inner cavity of the frame 1 is filled with a steel ball cluster 5. The bottom of the frame 1 is provided with four insulating support columns 101 and a grounding pin (not shown in the figure). The support columns 101 are arranged on the bottom of the frame 1 along a rectangle. The bracket includes two cross bars 2 and two vertical bars 3. The vertical bars 3 are respectively arranged on the left and right sides of the frame 1. The bottom of any vertical bar 3 is connected to the side wall of the frame 1. Any vertical bar 3 is arranged along the height direction. At least one vertical bar 3 is provided with a scale 301 along its length direction. The cross bar 2 and the vertical bar 3 form a sliding pair along the axial direction of the vertical bar 3. The cross bar 2 A support rod 4 is provided on it, and a transverse through slot 201 and a longitudinal through slot 202 are provided on any cross bar 2. The two cross bars 2 are respectively arranged above the left and right sides of the frame 1, and the upper part of the vertical rod 3 passes through the longitudinal through slot 202. The number of support rods 4 is one, and a number of convex rings 402 are provided on the support rod 4 at equal intervals along its axial direction. Any convex ring 402 protrudes outward along the circumferential direction, and the two ends of the support rod 4 respectively pass through the transverse through slots 201 of the two cross bars 2. A screw hole is provided in the end face of one end of the cross bar 2, which is connected to the longitudinal through slot 202, and a fastening bolt 203 is provided on the screw hole. Threaded sections are provided at both ends of the support rod 4, and fastening nuts 401 are provided at both ends of the support rod 4.

[0025] Example 2

[0026] See also Figure 2 、 Figure 3 , the utility model provides a technical solution:

[0027] A U-shaped enameled wire paint film integrity detection enameled wire clamping device, comprising a base, a bracket, and a support rod 4, the base comprising a hollow metal frame 1 with an opening upward, the bottom of the inner cavity of the frame 1 being filled with a steel ball cluster 5, the bottom surface of the frame 1 being provided with four insulating support columns 101 and a grounding pin 103, the support columns 101 being arranged on the bottom surface of the frame 1 along a rectangle, the bracket comprising two cross bars 2 and four vertical bars 3, the vertical bars 3 being arranged on the left and right sides of the frame 1 respectively, the tops of the two vertical bars 3 on both sides of the metal frame 1 being each connected by a connecting rod, the bottom of any vertical bar 3 being connected to the side wall of the frame 1, any vertical bar 3 being arranged along the height direction, at least one vertical bar 3 being provided with a scale 301 along its length direction, the cross bars 2 and the vertical bars 3 forming a vertical bar 3. The axial sliding pair of the rod 3, a support rod 4 is provided on the cross bar 2, any cross bar 2 is provided with a transverse through slot 201 and a longitudinal through slot 202, the two cross bars 2 are respectively arranged above the left and right sides of the frame 1, the upper part of the vertical rod 3 passes through the longitudinal through slot 202, the number of support rods 4 is two, and a number of convex rings 402 are provided on the support rod 4 at equal intervals along its axial direction, and any convex ring 402 protrudes outward along the circumferential direction, and the two ends of the support rod 4 respectively pass through the transverse through slots 201 of the two cross bars 2, and a screw hole is provided in the end face of one end of the cross bar 2, which is connected to the longitudinal through slot 202, and a fastening bolt 203 is provided on the screw hole, and a threaded section is provided at both ends of the support rod 4, and a fastening nut 401 is provided at both ends of the support rod 4.

[0028] Example 1 is a single support rod structure, and Example 2 is a double support rod structure. Example 2 has one more support rod than Example 1, which improves the stability of the support rod in fixing the enameled wire, but at the same time slightly increases the time for installing the sample. Example 1 reduces the sample loading time compared to Example 2, further improving the detection efficiency.

[0029] Furthermore, the distance between any adjacent protruding rings 402 is 4 mm.

[0030] Furthermore, the connecting rods can increase the stability of the structure.

[0031] Working process:

[0032] In Example 1, referring to Figure 1As shown, the threaded section of the support rod 4 passes through the transverse slot 201 of the crossbar 2. A step is provided between the threaded section of the support rod 4 and the main body of the support rod 4, so that the threaded section of the support rod 4 can pass through the crossbar 2, while the main body of the support rod 4 cannot pass through the crossbar 2 and stops on the inner side of the crossbar 2. The fastening nut 401 is installed on the threaded section of the support rod 4 and tightened to fix the support rod 4 to the crossbar 2. The crossbar 2 is inserted into the vertical rod 3 through its longitudinal slot 202. The vertical rod 3 is located between the support rod 4 and the fastening bolt 203 set at the end of the crossbar 2. The fastening bolt 203 is tightened to fix the crossbar 2 to the vertical rod 3 and the support rod 4.

[0033] Reference Figure 2 and Figure 3 As shown, after the enameled wire is formed, an electric spark detector is needed to detect the integrity of the paint film. The clamping device of Example 2 is used in the following steps:

[0034] Step 1: Place the clamping device Figure 2 Assemble and lock as shown, the specific locking position of the cross bar 2 and the support bar 4 is not limited;

[0035] Step 2: Loosen the fastening bolts 203 at both ends of the crossbar 2 so that the crossbar 2 can be adjusted in height on the vertical pole 3. Adjust the position of the crossbar 2 on the vertical pole 3 according to the length of the enameled wire. After adjusting to the appropriate height, tighten the fastening bolts 203 to fix the crossbar 2 and the vertical pole 3.

[0036] Step 3: Loosen the fastening nuts 401 at both ends of the two support rods 4 so that both support rods 4 can move horizontally in the transverse slots 201;

[0037] Step 4: Adjust one of the support rods 4 to the end or a position close to the end of the side, and tighten the fastening nuts 401 at both ends;

[0038] Step 4 is used to obtain a larger adjustment space for the spacing between the support rods 4;

[0039] Step 5: Insert one side of the enameled wire into the steel ball cluster 5 against one support rod 4. Adjust the position of the other support rod 4 in the transverse groove 201 according to the width of the wire. After clamping the enameled wire, rotate the fastening nuts 401 at both ends of the other support rod 4 to fix the cross bar 2 and the support rod 4.

[0040] Step 6: Insert more enameled wires into the steel ball cluster 5 through the support rod 4.

[0041] The convex ring 402 can ensure that the enameled wire will not deviate along the axial direction of the support rod 4, and the convex ring 402 can improve the stability of the enameled wire after being clamped and fixed.

[0042] The diameter of the steel balls in the steel ball cluster 5 is less than 2 mm. The steel ball cluster 5 is filled inside the metal frame 101, and the filling height is not less than 50 mm.

[0043] The scale 301 is provided to facilitate adjustment of the position of the sliding crossbar 2 according to the length of the enameled wire legs.

[0044] Through the transverse and longitudinal slots of the crossbar in the bracket, the height of the support rod can be adjusted, and the distance between the two support rods can also be adjusted, so as to adapt to enameled wires of different specifications and clamp enameled wires of different specifications, thereby improving the universality of the detection device.

Claims

1. An enameled wire clamping device for detecting the integrity of a U-shaped enameled wire film, characterized in that: The invention comprises a base, a bracket and a support rod (4), wherein the base comprises a hollow metal frame (1) with an opening facing upward, the bottom of the inner cavity of the frame (1) is filled with a steel ball cluster (5), the bottom surface of the frame (1) is provided with an insulating support column (101) and a grounding pin, the bracket comprises two cross bars (2) and at least two vertical bars (3), the vertical bars (3) are respectively provided on the left and right sides of the frame (1), the bottom of any one of the vertical bars (3) is connected to the side wall of the frame (1), and any one of the vertical bars (3) is provided in the height direction, the two cross bars (2) are respectively provided above the left and right sides of the frame (1), the cross bars (2) and the vertical bars (3) form a sliding pair along the axial direction of the vertical bars (3), the cross bars (2) are provided with a support rod (4), and the number of the support rod (4) is at least one.

2. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 1, characterized in that: Any one of the cross bars (2) is provided with a transverse through slot (201) and a longitudinal through slot (202), the upper portion of the vertical bar (3) passes through the longitudinal through slot (202), and both ends of the support bar (4) respectively pass through the transverse through slots (201) of the two cross bars (2).

3. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 2, characterized in that: A screw hole is provided in an end surface of one end of the cross bar (2), the screw hole is communicated with the longitudinal through slot (202), a fastening bolt (203) is provided on the screw hole, threaded sections are provided at both ends of the support bar (4), and fastening nuts (401) are provided at both ends of the support bar (4).

4. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 1, characterized in that: At least one of the vertical poles (3) is provided with a scale (301) along its length.

5. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 1, characterized in that: The number of the support columns (101) is four, and the support columns (101) are arranged along a rectangle on the bottom surface of the frame (1).

6. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 1, characterized in that: The support rod (4) is provided with a plurality of convex rings (402) at equal intervals along its axial direction, and any one of the convex rings (402) protrudes outward along the circumferential direction.

7. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 2, characterized in that: The number of the vertical poles (3) is four, the number of the support poles (4) is two, and the two vertical poles (3) are respectively close to the two ends of the transverse through slot (201).

8. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 6, characterized in that: The distance between any adjacent protruding rings (402) is 4 mm.

9. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 7, characterized in that: The tops of the two upright poles (3) on the left and right sides of the frame (1) are connected by a connecting rod.

10. The enameled wire clamping device for detecting the integrity of a U-shaped enameled wire paint film according to claim 1, characterized in that: A step is provided between the threaded section of the support rod (4) and the main body of the support rod (4).

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