Winding jig for transformer coil

Abstract

The utility model discloses a winding jig for a transformer coil, and belongs to the technical field of transformers. Comprising a winding shaft and a winding mold, the winding mold comprises a mold body and two side face baffles, and the mold body is formed by splicing two oblique notch half molds; the winding shaft comprises a screw rod, a connecting end face, an internal thread sleeve and an external thread sleeve, two positioning pins are symmetrically arranged on the inner side of the side face baffle and correspond to the two oblique notch half dies respectively, positioning holes are formed in the left end and the right end of each oblique notch half die, and a locking plate is arranged on the outer side, close to the connecting end face, of the side face baffle. The internal thread sleeve is located between the winding die and the connecting end face, and a locking notch is formed in the inner end of the internal thread sleeve; the mold body is clamped between the two side face baffles, the positioning pins at the same ends of the two side face baffles are inserted into the positioning holes in the left end and the right end of one oblique notch half mold respectively, the locking plate is embedded into the locking notch, and the winding mold is fixed to the screw through the inner threaded sleeve and the outer threaded sleeve.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to a winding jig for transformer coils. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are a primary coil, a secondary coil, and an iron core (magnetic core). Its main functions include voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization (magnetic saturation transformer). Conventional technology requires using winding equipment to wind copper wire onto a suitable jig to create a coil.

[0003] For example, the patent application number CN201721472395.0 discloses a square coil winding mold, which includes a square mold body composed of two oblique cut half molds, a first through hole for passing the winding shaft is provided in the middle of the square mold body, and two side baffles are connected to the square mold body, respectively, and a second through hole is provided in the middle of the side baffle to match the first through hole. A low-voltage starter positioning groove is provided on the upper side of the side baffle, and a starter fixing plate for fixing the low-voltage starter of the winding is connected to the low-voltage starter positioning groove. A high-voltage starter positioning groove is provided on the lower side of the side baffle for fixing the high-voltage starter of the winding. A plurality of threaded holes are symmetrically provided on the front and back of the square mold body, and a plurality of fixing holes corresponding to the threaded holes are provided on the side baffle. The square mold body and the side baffles are fixed by bolts inserted into the threaded holes and the fixing holes.

[0004] The mold body and the side baffles of this patent are fixed by bolts, and the mold body and the side baffles are fixed to the winding shaft through corresponding structures. The operation is complicated, which increases the difficulty and time of mold assembly and mold disassembly. Utility Model Content

[0005] To solve the above problems, the present invention provides a transformer coil winding jig that locks the winding shaft and the winding mold while simultaneously locking the two side baffles and the two beveled half molds. The technical solution is as follows:

[0006] The embodiment of the present invention provides a winding jig for a transformer coil, comprising a winding shaft 1 and a winding mold 2 thereon, wherein the winding mold 2 comprises a mold body 21 arranged in the left and right directions and two side baffles 22 on its left and right sides, wherein the mold body 21 is spliced ​​by two oblique cut half molds 3; the winding shaft 1 comprises a screw 11 arranged in the left and right directions, a connecting end face 12 at one end of the screw 11, an internally threaded sleeve 13 on the screw 11 and located on the side of the winding mold 2 close to the connecting end face 12, and an externally threaded sleeve 14 on the screw 11 and located on the side of the winding mold 2 away from the connecting end face 12, two locating pins 23 are symmetrically provided on the inner side of the side baffle 22, and the two locating pins 23 correspond to two The beveled cut half mold 3 is set and is set in the left and right directions. The left and right ends of the beveled cut half mold 3 are provided with positioning holes 24 that cooperate with the positioning pins 23. The outer side of the side baffle 22 close to the connecting end face 12 is provided with a locking plate 25. The internal threaded sleeve 13 is located between the winding mold 2 and the connecting end face 12 and its inner end is provided with a locking notch 15 that cooperates with the locking plate 25; the mold body 21 is clamped between the two side baffles 22, and the positioning pins 23 at the same end of the two side baffles 22 are respectively inserted into the positioning holes 24 at the left and right ends of a beveled cut half mold 3, and the locking plate 25 is embedded in the locking notch 15. The internal threaded sleeve 13 and the external threaded sleeve 14 fix the winding mold 2 on the screw 11.

[0007] Specifically, the mold body 21 in the embodiment of the present invention is a hollow long cylinder, and the side baffle 22 is an oblong plate that matches the shape of the mold body 21.

[0008] Among them, the two positioning pins 23 in the embodiment of the utility model are arranged on the long axis of the side baffle 22 and are symmetrically arranged with respect to the short axis. Correspondingly, the two positioning holes 24 are arranged on the long axis of the end face of the mold body 21 and are symmetrically arranged with respect to the short axis. The bevel cut of the bevel cut half mold 3 extends from one side of the short axis of one end face of the mold body 21 to the other side of the short axis of the other end face.

[0009] Furthermore, a circular hole 26 for the screw 11 to pass through is provided at the center of the side baffle 22 in the embodiment of the utility model, a high-voltage terminal positioning groove 27 is provided at one end of its long axis, and a low-voltage terminal positioning groove 28 is provided at the other end of its long axis.

[0010] Among them, the locking plate 25 in the embodiment of the present invention is arranged perpendicular to the side baffle 22, is arranged close to the circular hole 26, and is arranged along the radial direction of the circular hole 26; the locking notch 15 is arranged along the left and right directions.

[0011] Furthermore, in the embodiment of the utility model, the inner end of the external threaded sleeve 14 is coaxially provided with an outer expanded end, and the outer diameter of the outer expanded end is larger than the outer diameter of the external threaded sleeve 14; the inner end of the internal threaded sleeve 13 is coaxially provided with an inner expanded end, and the outer diameter of the inner expanded end is larger than the outer diameter of the internal threaded sleeve 13, and the locking notch 15 is provided on the inner expanded end.

[0012] The connecting end surface 12 in the embodiment of the present invention is a circular surface coaxially arranged with the screw rod 11 and its diameter is larger than the diameter of the screw rod 11 .

[0013] Specifically, the external threaded sleeve 14 in the embodiment of the present invention includes two threaded sleeves arranged side by side on the left and right, and the internal threaded sleeve 13 is a threaded sleeve and is provided with a fixing ring band 16 for fixing the insulating tape. The fixing ring band 16 is arranged close to the winding mold 2 and is loosely sleeved on the outside of the internal threaded sleeve 13.

[0014] The beneficial effects of the technical solution provided by the embodiment of the present invention are as follows: the embodiment of the present invention provides a winding jig for a transformer coil, which locks the two side baffles and the two bevel-cut half-molds while locking the winding shaft and the winding mold. The operation is simple, and the disassembly and assembly are convenient, which reduces the disassembly and assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a transformer coil winding jig provided by an embodiment of the present utility model;

[0016] Figure 2 It is the inside view of the side baffle;

[0017] Figure 3 This is an outside view of the side panels;

[0018] Figure 4 It is a structural diagram of the mold body;

[0019] Figure 5 It is a schematic diagram of the structure of a half-mold with an oblique cut;

[0020] Figure 6 This is a schematic diagram of the structure of another bevel cut half mold;

[0021] Figure 7 It is a structural diagram of an internally threaded casing.

[0022] In the figure: 1 winding shaft, 2 winding mold, 3 bevel cut half mold;

[0023] 11 screw, 12 connecting end face, 13 internal threaded sleeve, 14 external threaded sleeve, 15 locking notch, 16 fixing ring band;

[0024] 21 mold body, 22 side baffle, 23 positioning pin, 24 positioning hole, 25 locking plate, 26 round hole, 27 high voltage terminal positioning groove, 28 low voltage terminal positioning groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] See also Figure 1-7 , Example 1 provides a winding jig for a transformer coil, including a winding shaft 1 and a winding mold 2 thereon.

[0028] The winding mold 2 comprises a mold body 21 arranged in a horizontal direction, and two side baffles 22 on its left and right sides. The mold body 21 is a hollow, long cylinder with through-holes in the centers of its left and right end faces for the screw 11 to pass through. It is composed of two beveled mold halves 3. The bevel cuts of the beveled mold halves 3 extend from one side of the minor axis of one end face of the mold body 21 to the other side of the minor axis of the other end face. The side baffles 22 are oblong plates that match (have a similar shape to) the mold body 21. They are larger than the cross-section of the mold body 21 and have a circular hole 26 in their centers for the screw 11 to pass through.

[0029] The winding shaft 1 comprises a screw 11, a connecting end face 12, an internally threaded sleeve 13, and an externally threaded sleeve 14. The screw 11 is arranged horizontally, with the connecting end face 12 coaxially disposed at one end. The connecting end face 12 has a diameter greater than that of the screw 11 and is specifically a circular surface coaxially disposed with the screw 11. During winding, the connecting end face 12 rests against the drive plate of the winding machine. The other end of the winding shaft 1 is coaxially disposed with and rests against the center of the winding machine. The internally threaded sleeve 13 is arranged horizontally and threadedly connected to the screw 11. It is located on the side of the winding mold 2 closest to the connecting end face 12, between the winding mold 2 and the connecting end face 12. Its inner end is provided with a locking notch 15 (specifically, a strip-shaped notch arranged horizontally) that mates with the locking plate 25. The externally threaded sleeve 14 is arranged horizontally and threadedly connected to the screw 11. It is located on the side of the winding mold 2 away from the connecting end face 12. The other end of the screw rod 11 extends toward the external threaded sleeve 14 .

[0030] Two symmetrical positioning pins 23 are provided on the inner side of the side baffle 22. These two positioning pins 23 correspond to the two beveled cut mold halves 3 and are both arranged in the left-right direction. Specifically, the two positioning pins 23 are located on the long axis of the side baffle 22 and are symmetrically arranged about the short axis of the side baffle 22. Positioning holes 24 (specifically, circular holes arranged in the left-right direction and with a clearance fit between the positioning pins 23) are provided on the left and right ends of the beveled cut mold halves 3. Specifically, the two positioning holes 24 are located on the long axis of the end face of the mold body 21 and are symmetrically arranged about the short axis of the end face of the mold body 21. A locking plate 25 is provided on the outer side of the side baffle 22 near the connecting end face 12. Specifically, the locking plate 25 is arranged perpendicular to the side baffle 22, near the circular hole 26, and radially along the circular hole 26.

[0031] Among them, the mold body 21 is clamped between two side baffles 22, and the positioning pins 23 at the same end of the two side baffles 22 are respectively inserted into the positioning holes 24 at the left and right ends of an oblique cut half mold 3, and the locking plate 25 is embedded in the locking notch 15. The internal threaded sleeve 13 and the external threaded sleeve 14 fix the winding mold 2 on the screw 11.

[0032] Furthermore, the side baffle 22 in the embodiment of the present invention has a high-voltage terminal positioning groove 27 at one end of its long axis and a low-voltage terminal positioning groove 28 at the other end of its long axis. Both the high-voltage terminal positioning groove 27 and the low-voltage terminal positioning groove 28 are rectangular grooves arranged along the long axis.

[0033] Example 2

[0034] See also Figure 1 and 7 Example 2 provides a transformer coil winding jig, which has a structure substantially the same as that of Example 1, except that: in this embodiment, an outer flared end (which may or may not have threads on its inner side) is coaxially provided on the inner end of the externally threaded sleeve 14, and the outer diameter of the outer flared end is larger than the outer diameter of the externally threaded sleeve 14. An inner flared end (which may or may not have threads on its inner side) is coaxially provided on the inner end of the internally threaded sleeve 13, and the outer diameter of the inner flared end is larger than the outer diameter of the internally threaded sleeve 13. A locking notch 15 is provided on the inner flared end.

[0035] Example 3

[0036] Example 3 provides a winding jig for a transformer coil, the structure of which is basically the same as that of Example 1, except that: the external threaded sleeve 14 in this embodiment includes two threaded sleeves arranged side by side on the left and right to ensure the locking effect, and the internal threaded sleeve 13 is a threaded sleeve and is provided with a fixing ring belt 16 (specifically a cloth belt ring) for fixing the insulating belt (the insulating belt is placed in the gap between the fixing ring belt 16 and the internal threaded sleeve 13). The fixing ring belt 16 is arranged close to the winding mold 2 and is loosely sleeved on the outside of the internal threaded sleeve 13.

[0037] Example 4

[0038] Example 4 provides a winding jig for a transformer coil, the structure of which is basically the same as that of Example 1, except that: the connecting end face 12 in this embodiment is located at the right end of the screw 11, the internal threaded sleeve 13 is located on the right side of the winding mold 2, the external threaded sleeve 14 is located on the left side of the winding mold 2, a locking plate 25 is provided on the outer side of the right side baffle 22, a locking notch 15 is provided on the left end of the internal threaded sleeve 13, and the bevel of the beveled cut half mold 3 is set obliquely downward from right to left. The winding mold 2 is set vertically and is composed of two beveled cut half molds 3 spliced ​​together from top to bottom. Two locating pins 23 are set side by side in an upper and lower direction, and the high-voltage terminal positioning groove 27 and the low-voltage terminal positioning groove 28 are respectively provided at the upper and lower ends of the side baffle 22.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transformer coil winding jig, comprising a winding shaft (1) and a winding die (2) thereon, wherein the winding die (2) comprises a die body (21) arranged in a left-right direction and two side baffles (22) on its left and right sides, wherein the die body (21) is formed by splicing two obliquely cut half-molds (3); characterized in that: The winding shaft (1) comprises a screw (11) arranged in the left-right direction, a connecting end face (12) at one end of the screw (11), an internal threaded sleeve (13) on the screw (11) and located on the side of the winding mold (2) close to the connecting end face (12), and an external threaded sleeve (14) on the screw (11) and located on the side of the winding mold (2) away from the connecting end face (12). Two positioning pins (23) are symmetrically provided on the inner side of the side baffle (22). The two positioning pins (23) are respectively provided corresponding to the two bevel cut half molds (3) and are both arranged in the left-right direction. The left and right ends of the bevel cut half mold (3) are provided with positioning holes (24) that cooperate with the positioning pins (23). A locking plate (25) is provided on the outer side of the side baffle (22) of the connecting end face (12); the internal threaded sleeve (13) is located between the winding mold (2) and the connecting end face (12), and the inner end thereof is provided with a locking notch (15) that matches the locking plate (25); the mold body (21) is clamped between the two side baffles (22); the positioning pins (23) at the same end of the two side baffles (22) are respectively inserted into the positioning holes (24) at the left and right ends of an oblique cut half mold (3); the locking plate (25) is embedded in the locking notch (15); the internal threaded sleeve (13) and the external threaded sleeve (14) fix the winding mold (2) on the screw (11).

2. The transformer coil winding jig according to claim 1, characterized in that: The mold body (21) is a hollow long cylinder, and the side baffle (22) is an oblong plate that matches the shape of the mold body (21).

3. The transformer coil winding jig according to claim 2, characterized in that: Two positioning pins (23) are arranged on the long axis of the side baffle (22) and are symmetrically arranged with respect to the short axis. Correspondingly, two positioning holes (24) are arranged on the long axis of the end face of the mold body (21) and are symmetrically arranged with respect to the short axis. The bevel cut of the bevel cut half mold (3) extends from one side of the short axis of one end face of the mold body (21) to the other side of the short axis of the other end face.

4. The transformer coil winding jig according to claim 2, characterized in that: The center of the side baffle (22) is provided with a circular hole (26) for the screw (11) to pass through, one end of its long axis is provided with a high-voltage terminal positioning groove (27), and the other end of its long axis is provided with a low-voltage terminal positioning groove (28).

5. The transformer coil winding jig according to claim 4, characterized in that: The locking plate (25) is arranged perpendicular to the side baffle (22), is arranged close to the circular hole (26), and is arranged along the radial direction of the circular hole (26); the locking notch (15) is arranged in the left and right directions.

6. The transformer coil winding jig according to claim 1, characterized in that: The inner end of the external threaded sleeve (14) is coaxially provided with an outer expanded end, and the outer diameter of the outer expanded end is larger than the outer diameter of the external threaded sleeve (14); the inner end of the internal threaded sleeve (13) is coaxially provided with an inner expanded end, and the outer diameter of the inner expanded end is larger than the outer diameter of the internal threaded sleeve (13), and the locking notch (15) is provided on the inner expanded end.

7. The transformer coil winding jig according to claim 1, characterized in that: The connecting end surface (12) is a circular surface coaxially arranged with the screw (11) and has a diameter greater than that of the screw (11).

8. The transformer coil winding jig according to claim 1, characterized in that: The external threaded sleeve (14) comprises two threaded sleeves arranged side by side on the left and right sides, and the internal threaded sleeve (13) is a threaded sleeve and is provided with a fixing ring belt (16) for fixing the insulating belt. The fixing ring belt (16) is arranged close to the winding mold (2) and is loosely sleeved outside the internal threaded sleeve (13).

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