A current transformer and a production method thereof

Abstract

The present invention provides a current transformer and a production method thereof, which relates to the technical field of current transformers, including a shell, a coil assembly is arranged in the shell, the coil assembly includes a coil, a left-right symmetrical fixing block is arranged in the shell, a groove is provided on the fixing block, a pin is arranged in the groove, the coil is connected to the pin, a limiting groove is arranged in the groove, a through groove is also provided on the fixing block, the through groove is connected with the groove, and the through groove and the groove are arranged at a 90-degree angle, a limiting block is arranged in the through groove, and the limiting block is pressed and matched with the limiting groove. The present invention forms a limit for the pin by placing the pin into the groove and then inserting the limiting block into the limiting groove, without the need to squeeze and match the pin, thereby reducing the probability of damage to the pin, and effectively improving the yield rate of the current transformer.

Description

Technical Field

[0001] The invention relates to the technical field of current transformers, in particular to a current transformer and a production method thereof. Background Art

[0002] The principle of current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. Its primary winding has very few turns and is connected in series in the circuit of the current to be measured, so it often has the entire current of the circuit flowing through it. The secondary winding has more turns and is connected in series in the measuring instrument and the protection circuit. When the current transformer is working, its secondary circuit is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to a short circuit. The current transformer converts the large current on the primary side into a small current on the secondary side for use, and the secondary side cannot be open;

[0003] The existing patent CN 220526705 U provides a pin fixing structure of a current transformer and a current transformer, which uses a tool to press the other side of the pin into the positioning groove. Since the positioning groove and the other side of the pin are in interference fit, the part of the other side of the pin that matches the positioning groove will be deformed; however, under the pushing force of the tool and the clamping force of the positioning groove, the pin will not only be deformed, but also easily broken, resulting in a product yield and poor quality. Summary of the invention

[0004] The present invention provides a current transformer and a production method thereof to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a current transformer, including a shell, a coil assembly is arranged in the shell, the coil assembly includes a coil, a left-right symmetrical fixing block is arranged in the shell, a groove is provided on the fixing block, a pin is provided in the groove, the coil is connected to the pin, a limiting groove is provided in the groove, a through groove is also provided on the fixing block, the through groove is connected with the groove, and the through groove and the groove are arranged at a 90-degree angle, a limiting block is arranged in the through groove, and the limiting block and the limiting groove are pressed tightly together.

[0006] Preferably, a left-right symmetrical through hole is opened on the lower surface of the shell, and a shaft sleeve is installed on the lower surface of the shell, and the shaft sleeve corresponds to the through hole; a plurality of clamping grooves are also arranged in the shell; and a pressing block is arranged on the limit block.

[0007] Preferably, the pin includes a first section and a second section, one end of the first section is connected to the coil, the other end of the first section is connected to the second section, the second section extends out of the shell through the sleeve and the through hole, and the first section cooperates with the groove.

[0008] Preferably, a method for producing a current transformer, used for manufacturing a current transformer as described above, comprises the following steps:

[0009] S1: Place the coil and pins on the coil assembly into a welding mechanism for welding, and then install the coil assembly and pins into the housing;

[0010] S2: Push the first section into the groove, and the second section through the sleeve and the through hole;

[0011] S3: Press the pressing block, and the limiting block and the limiting groove are pressed and matched tightly, thereby limiting the first section;

[0012] S4: Fill the shell with glue to complete the production.

[0013] Preferably, the welding mechanism includes a fixed table, a welding shell is arranged on the fixed table, a conveying plate is fixedly arranged on the fixed table, a fixing mechanism is arranged on the conveying plate, the fixing mechanism is used to fix the coil and the pin, and a welding head is arranged on the upper side of the fixed table, and the welding head is used to weld the coil and the pin.

[0014] Preferably, U-shaped plates are provided on the inner walls on the left and right sides of the welding shell, a horizontal plate is fixedly provided on the side where the U-shaped plates are close to each other, a slide groove is provided in the center of the horizontal plate, a sliding plate is slidably provided in the slide groove, a direct driving component 1 is fixedly provided on the sliding plate symmetrically on the left and right sides, the lower output end of the direct driving component 1 slides through the sliding plate, the lower output end of the direct driving component 1 is fixedly connected to the lifting plate, a sleeve is rotatably connected to the center of the lifting plate, and a welding head is rotatably provided at the lower end of the sleeve.

[0015] Preferably, a motor is fixedly arranged symmetrically on the horizontal plate, a reciprocating screw is fixedly connected to the lower output end of the motor, the reciprocating screw rotates and passes through the horizontal plate, the reciprocating screw is rotatably connected to the fixed platform, a moving rod is threadedly connected to the reciprocating screw, an L-shaped connecting rod is fixedly arranged on the side where the moving rods are close to each other, the two L-shaped connecting rods form a square frame, a moving cylinder is slidably arranged in the square frame, a moving cylinder is arranged in the moving cylinder, a connecting key is arranged on the sleeve, the connecting key cooperates with the moving groove, and the sleeve is socketed with the moving cylinder.

[0016] Preferably, a positioning block is provided on the lifting plate, a rotating rod is rotatably provided on the positioning block, a bevel gear 1 is fixedly provided on one end of the rotating rod, a bevel gear 2 is fixedly provided on the sleeve, bevel gear 1 is meshingly connected with bevel gear 2, a gear 1 is fixedly provided on the other end of the rotating rod, a groove is provided on the lifting plate, a toothed plate is fixedly provided on one of the moving rods, and the toothed plate cooperates with gear 1.

[0017] Preferably, a filter screen is detachably provided in the sleeve, a U-shaped limit block is fixedly provided at the lower end of the filter screen, a gear two is rotatably connected to the U-shaped limit block, a bevel gear three is fixedly provided on the front side of the gear two, and the left side of the gear two is meshingly connected to the gear three, a rack one is provided in the movable cylinder, a mounting groove one is provided on the sleeve, gear three is rotatably connected in the mounting groove one, a bevel gear four is meshingly connected at the lower side of the bevel gear three, a gear four is fixedly connected at the lower end of the bevel gear four, and a gear five is meshingly connected to the left side of the gear four, a mounting groove two is also provided on the sleeve, gear five is rotatably connected in the mounting groove two, a drive rod is fixedly provided on the gear five, and an arc-shaped opening and closing plate is fixedly provided on the drive rod.

[0018] Preferably, an air pump is fixedly provided at the center of the sliding plate, a connecting pipe is fixedly provided at the lower end of the air pump, the connecting pipe is fixedly provided downwardly and penetrates the sliding plate, and the lower end of the connecting pipe is rotatably connected with the sleeve, an air outlet pipe is connected to the air pump, the air outlet pipe extends upward out of the welding shell, a cleaning box is fixedly provided at the upper end of the welding shell, the air outlet pipe is connected to the cleaning box, and an adsorption block is provided in the cleaning box;

[0019] Two racks are fixedly arranged symmetrically on the lower surface of the moving rod, and rotating rods are rotatably connected on the inner walls of the left and right sides of the welding shell. A toothed ring is fixedly arranged on the rotating rod, and the toothed ring is meshed with the two racks. Fan blades are fixedly arranged on the side of the rotating rod close to each other;

[0020] A linear drive component 2 is fixedly arranged on the transverse plate, a right output end of the linear drive component 2 is fixedly connected with a drive block, and the drive block is fixedly arranged on the sliding plate.

[0021] Compared with the prior art, the present invention provides a current transformer and a production method thereof, wherein the pins are placed into grooves and then a limit block is inserted into the limit grooves, thereby limiting the pins. There is no need to squeeze the pins, thereby reducing the probability of damage to the pins and effectively improving the product quality and yield rate of the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of a current transformer of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the fixing block of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the welding mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified image of point A;

[0027] Figure 5 A top view of the horizontal plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the matching of the L-shaped connecting rod of the present invention;

[0029] Figure 7 It is a schematic diagram of the cooperation between the moving cylinder and the sleeve of the present invention;

[0030] Figure 8 It is a schematic diagram of the internal structure of the sleeve of the present invention.

[0031] In the figure: 1, housing; 2, coil assembly; 3, snap-in groove; 4, coil; 5, fixed block; 6, first section; 7, second section; 8, groove; 9, limit block; 10, pressing block; 11, limit groove; 12, sleeve; 13, fixed platform; 14, welding housing; 15, moving cylinder; 16, reciprocating screw rod; 17, motor; 18, linear drive part 2; 19, direct drive part 1; 20, cleaning box; 21, adsorption block; 22, horizontal plate; 23, U-shaped plate; 24, tooth plate; 25, moving rod; 26, rack 2; 27, gear ring; 28. Rotating rod; 29. ​​Fan blade; 30. Welding head; 31. Conveying plate; 32. Lifting plate; 33. Rotating rod; 34. Connecting key; 35. Sleeve; 36. Bevel gear 2; 37. Air pump; 38. Exhaust pipe; 39. Bevel gear 1; 40. Gear 1; 41. Sliding plate; 42. L-shaped connecting rod; 43. Slide groove; 44. Rack 1; 45. Gear 3; 46. Arc opening and closing plate; 47. Gear 2; 48. Gear 4; 49. Driving rod; 50. Gear 5; 51. Bevel gear 4; 52. Bevel gear 3; 53. Filter. DETAILED DESCRIPTION

[0032] 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.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1

[0036] An embodiment of the present invention provides a current transformer, such as Figure 1-Figure 2 As shown, it includes a shell 1, a coil assembly 2 is arranged in the shell 1, the coil assembly 2 includes a coil 4, a left-right symmetrical fixing block 5 is arranged in the shell 1, a groove 8 is opened on the fixing block 5, a pin is arranged in the groove 8, the coil 4 is connected to the pin, a limiting groove 11 is opened in the groove 8, a through groove is also opened on the fixing block, the through groove is connected with the groove 8, and the through groove and the groove 8 are arranged at a 90-degree angle, a limiting block 9 is arranged in the through groove, and the limiting block 9 is pressed and fitted with the limiting groove 11.

[0037] The working principle and beneficial effects of the above technical solution are as follows: first connect the coil 4 to the pin, then install the coil assembly 2 and the pin into the housing 1, and the pin passes through the groove 8. At this time, press the limit block 9, and the limit block 9 passes through the through groove and the groove 8 and enters the limit groove 11, and the limit block 9 is pressed and fitted with the limit groove 11, thereby forming a space for placing the pin in the groove 8; by placing the pin into the groove, and then inserting the limit block into the limit groove, the pin is limited, and there is no need to squeeze the pin, thereby reducing the probability of damage (breakage) to the pin, and effectively improving the product quality and yield rate of the current transformer.

[0038] Example 2

[0039] On the basis of the above-mentioned embodiment 1, Figure 1-Figure 2As shown, a left-right symmetrical through hole is opened on the lower surface of the shell 1, and a shaft sleeve 12 is installed on the lower surface of the shell 1, and the shaft sleeve 12 corresponds to the through hole; a plurality of clamping grooves 3 are also arranged in the shell 1; and a pressing block 10 is arranged on the limit block 9.

[0040] Among them, preferably, the pin includes a first section 6 and a second section 7, one end of the first section 6 is connected to the coil 4, the other end of the first section 6 is connected to the second section 7, the second section 7 extends out of the shell 1 through the sleeve 12 and the through hole, and the first section 6 cooperates with the groove 8.

[0041] Wherein, a cover plate is detachably mounted on the housing 1 .

[0042] The working principle and beneficial effects of the above technical solution are as follows: when installing the pin, the first section 6 is passed through the groove 8, and the pressing block 10 is pressed, so that the limit block 9 moves in the through groove and the groove 8; the second section 7 passes through the sleeve 12 and the through hole and extends out of the shell 1; by setting the pressing block 10, the limit block 9 can be quickly pressed into the limit groove 11 (by manual pressing or tooling); and by setting a plurality of snap-in grooves 3, the assembly of the shell 1 and the cover plate can be quickly completed, which is more convenient to use.

[0043] Example 3

[0044] This embodiment provides a method for producing a current transformer, which is used to manufacture a current transformer as described above, and includes the following steps:

[0045] S1: Put the coil 4 and the pins on the coil assembly 2 into a welding mechanism for welding, and then install the coil assembly 2 and the pins into the housing 1;

[0046] S2: Push the first section 6 into the groove 8, and the second section 7 passes through the sleeve 12 and the through hole;

[0047] S3: Press the pressing block 10, and the limiting block 9 is pressed and matched with the limiting groove 11, thereby limiting the first section 6;

[0048] S4: Filling the shell 1 with glue to complete the production.

[0049] The working principle and beneficial effects of the above technical solution are as follows: first, the coil 4 and the pins on the coil assembly 2 are placed in the welding mechanism for welding, and then the coil assembly 2 and the pins are installed in the housing 1; second, the first section 6 is pushed into the groove 8, and the second section 7 passes through the sleeve 12 and the through hole; third, the pressing block 10 is pressed, and the limiting block 9 is pressed and matched with the limiting groove 11, so as to limit the first section 6 (that is, to limit the pins); fourth, the production is completed by filling glue in the housing 1; and then the housing 1 and the cover plate are assembled;

[0050] Through the above steps, the current sensor can be manufactured quickly, and at the same time, the pins can be effectively limited. Compared with the prior art, there is no need to extrude the pins, and a space for placing the pins is formed in the through hole, the sleeve and the groove 8, which completes the limitation of the pins in two directions, with better limiting effect and higher yield rate.

[0051] Example 4

[0052] Based on the above embodiment 3, Figure 3 As shown, the welding mechanism includes a fixing table 13, a welding shell 14 is arranged on the fixing table 13, a conveying plate 31 is fixedly arranged on the fixing table 13, a fixing mechanism is arranged on the conveying plate 31, the fixing mechanism is used to fix the coil 4 and the pin, and a welding head 30 is arranged on the upper side of the fixing table 13, and the welding head 30 is used to weld the coil and the pin.

[0053] Among them, the fixing mechanism is a common fixing mechanism on the market;

[0054] The working principle and beneficial effects of the above technical solution are as follows: the coil 4 and the pin are placed on the conveying plate 31, the fixing mechanism forms a limit for the coil 4 and the pin, and then the conveying plate 31 conveys the coil 4 and the pin into the welding shell 14, and the welding head 30 welds the coil 4 and the pin; by setting up the welding mechanism, the welding work of the coil 4 and the pin can be completed quickly, effectively replacing manual labor, making it more convenient to use and more practical.

[0055] Example 5

[0056] On the basis of the above-mentioned embodiment 4, Figure 3-Figure 8 As shown, U-shaped plates 23 are provided on the inner walls of the left and right sides of the welding shell 14, a horizontal plate 22 is fixedly provided on the side where the U-shaped plates 23 are close to each other, a slide groove 43 is provided in the center of the horizontal plate 22, a sliding plate 41 is slidably provided in the slide groove 43, a direct driving member 19 is fixedly provided on the sliding plate 41 symmetrically on the left and right, the lower output end of the direct driving member 19 slides through the sliding plate 41, the lower output end of the direct driving member 19 is fixedly connected to the lifting plate 32, the lifting plate 32 is rotatably connected with a sleeve 35 in the center, and the welding head 30 is rotatably provided at the lower end of the sleeve 35.

[0057] Among them, preferably, the motor 17 is fixedly arranged symmetrically on the left and right sides of the horizontal plate 22, and the lower output end of the motor 17 is fixedly connected to the reciprocating screw 16, the reciprocating screw 16 rotates and passes through the horizontal plate 22, the reciprocating screw 16 is rotatably connected to the fixed platform 13, and the moving rod 25 is threadedly connected to the reciprocating screw 16, and an L-shaped connecting rod 42 is fixedly arranged on the side where the moving rods 25 are close to each other, and the two L-shaped connecting rods 42 form a square frame, and a moving cylinder 15 is slidably arranged in the square frame, and a moving groove is arranged in the moving cylinder 15, and a connecting key 34 is arranged on the sleeve 35, and the connecting key 34 cooperates with the moving groove, and the sleeve 35 is socketed with the moving cylinder 15.

[0058] The working principle and beneficial effects of the above technical solution are as follows: start two direct drive members 19, the direct drive member 19 drives the lifting plate 32 to move downward, the lifting plate 32 drives the sleeve 35 to move downward, the sleeve 35 drives the welding head 30 to move downward, so that the welding head 30 is closer to the coil 4 and the pin; when the sleeve 35 moves downward, the moving cylinder 15 is fixed; when the moving cylinder 15 needs to move, start the motor 17, the reciprocating screw rod 16 starts to rotate, the reciprocating screw rod 16 drives the moving rod 25 to move up and down, the moving rod 25 drives the L-shaped connecting rod 42 to move, and the L-shaped connecting rod 42 drives the moving cylinder 15 to move up and down, so that the moving cylinder 15 slides up and down on the sleeve 35; by setting the direct drive member 19, the welding head 30 can be quickly approached to the coil 4 and the pin; and setting two motors 17 and the reciprocating screw rod 16 can quickly drive the movement of the moving cylinder 15, the structure is simple, and it is more convenient to use.

[0059] Example 6

[0060] On the basis of the above-mentioned embodiment 5, Figure 3-Figure 8 As shown, a positioning block is provided on the lifting plate 32, and a rotating rod 33 is rotatably provided on the positioning block. A bevel gear 39 is fixedly provided on one end of the rotating rod 33, and a bevel gear 36 is fixedly provided on the sleeve 35. The bevel gear 39 is meshed and connected with the bevel gear 36. A gear 40 is fixedly provided on the other end of the rotating rod 33. A groove is provided on the lifting plate 32, and a toothed plate 24 is fixedly provided on one of the moving rods 25, and the toothed plate 24 cooperates with the gear 40.

[0061] Among them, preferably, a filter screen 53 is detachably provided in the sleeve 35, a U-shaped limit block is fixedly provided at the lower end of the filter screen 53, a gear 2 47 is rotatably connected to the U-shaped limit block, a bevel gear 3 52 is fixedly provided on the front side of the gear 2 47, and the left side of the gear 2 47 is meshedly connected with the gear 3 45, a rack 1 44 is provided in the movable cylinder 15, a mounting groove 1 is provided on the sleeve 35, the mounting groove 1 is rotatably connected to the gear 3 45, the lower side of the bevel gear 3 52 is meshedly connected with the bevel gear 4 51, the lower end of the bevel gear 48 is fixedly connected to the gear 48, and the left side of the gear 48 is meshedly connected with the gear 5 50, a mounting groove 2 is also provided on the sleeve 35, the mounting groove 2 is rotatably connected to the gear 5 50, a drive rod 49 is fixedly provided on the gear 5 50, and an arc-shaped opening and closing plate 46 is fixedly provided on the drive rod 49.

[0062] The working principle and beneficial effects of the above technical solution are as follows: when the sleeve 35 moves downward, the rack 1 44 drives the gear 3 45 to rotate, the gear 3 45 drives the gear 2 47 to rotate, the gear 2 47 drives the bevel gear 3 52 to rotate, the bevel gear 3 52 drives the bevel gear 4 51 to rotate, the bevel gear 4 51 drives the gear 4 48 to rotate, the gear 4 48 drives the gear 5 50 to rotate, the gear 5 50 drives the driving rod 49 to rotate, so that the arc-shaped opening and closing plate 46 is opened, which facilitates the entry of impurities such as welding smoke into the sleeve 35 during welding;

[0063] When the motor 17 is started, the reciprocating screw rod 16 drives the moving rod 25 to move, the moving rod 25 drives the L-shaped connecting rod 42 to move, and the L-shaped connecting rod 42 drives the moving cylinder 15 to move. When the moving cylinder 15 moves upward, the toothed plate 24 on the moving rod 25 will pass through the groove and cooperate with the gear 1 40, thereby driving the gear 1 40 to rotate, the gear 1 40 drives the rotating rod 33 to rotate, the rotating rod 33 drives the bevel gear 1 39 to rotate, the bevel gear 1 39 drives the bevel gear 2 36 to rotate, the bevel gear 2 36 drives the sleeve 35 to rotate, and the sleeve 35 drives the moving cylinder 15 to rotate together, thereby performing rotational suction of the air near the welding position, and the adsorption effect is better; through the cooperation of the sleeve 35 and the moving cylinder 15, the arc-shaped opening and closing plate 46 can be opened, and at the same time, the rise of the moving rod 25 can also cause the sleeve 35 to rotate with the moving cylinder 15, the cooperation effect of each component is better, and the adsorption effect is better.

[0064] Example 7

[0065] On the basis of the above-mentioned embodiment 6, Figure 3-Figure 8As shown, an air pump 37 is fixedly provided at the center of the sliding plate 41, a connecting pipe is fixedly provided at the lower end of the air pump 37, the connecting pipe is fixedly provided downwardly and penetrates the sliding plate 41, and the lower end of the connecting pipe is rotatably connected with the sleeve 35, an air outlet pipe 38 is connected through the air pump 37, the air outlet pipe 38 extends upward out of the welding shell 14, a cleaning box 20 is fixedly provided at the upper end of the welding shell 14, the air outlet pipe 38 is connected through the cleaning box 20, and an adsorption block 21 is provided in the cleaning box 20;

[0066] A second rack 26 is fixedly provided on the lower surface of the moving rod 25 symmetrically, and a rotating rod 28 is rotatably connected to the inner walls of the left and right sides of the welding shell 14, and a toothed ring 27 is fixedly provided on the rotating rod 28, and the toothed ring 27 is meshed and connected with the second rack 26, and a fan blade 29 is fixedly provided on the side of the rotating rod 28 close to each other;

[0067] A second linear driving member 18 is fixedly disposed on the transverse plate 22 . A driving block is fixedly connected to a right output end of the second linear driving member 18 . The driving block is fixedly disposed on the sliding plate 41 .

[0068] The working principle and beneficial effects of the above technical solution are as follows: the linear driving member 18 drives the driving block to move, so that the sliding plate 41 moves left and right, so that the welding head 30 moves left and right, and the coils 4 and pins on the left and right sides are welded, and the welding is more convenient;

[0069] When welding starts, the air pump 37 is started, and the smoke and other impurities near the welding position enter the sleeve 35 through the arc-shaped opening and closing plate 46, and then enter the cleaning box 20 through the connecting pipe, the air pump 37 and the air outlet pipe after being filtered by the filter 53. The adsorption block 21 in the cleaning box 20 adsorbs the smoke and other impurities, and then discharges them. By setting the filter 53 and the adsorption block 21, the smoke and other impurities can be quickly cleaned, and the welding smoke can be effectively reduced, that is, the impact of the smoke on the human body is reduced, and the cleanliness is high and the safety is good.

[0070] When the moving rod 25 moves downward, the moving rod 25 drives the rack 26 to move downward, the rack 26 drives the gear ring 27 to rotate, the gear ring 27 drives the rotating rod 28 to rotate, and the rotating rod 28 drives the fan blades 29 to discharge wind, thereby suppressing the escape of impurities such as smoke, and blowing impurities such as smoke to the central position, that is, closer to the sleeve 35, so that impurities such as smoke can enter the sleeve 35 more conveniently. The device has a high degree of coordination and is easy to use, which effectively improves the functionality and practicality of the device.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A method for producing a current transformer, characterized in that: The current transformer comprises a housing (1), a coil assembly (2) is arranged in the housing (1), the coil assembly (2) comprises a coil (4), a left-right symmetrical fixing block (5) is arranged in the housing (1), a groove (8) is provided on the fixing block (5), a pin is provided in the groove (8), the coil (4) is connected to the pin, a limiting groove (11) is provided in the groove (8), a through groove is further provided on the fixing block, the through groove and the groove (8) are connected, and the through groove and the groove (8) are arranged at an angle of 90 degrees, a limiting block (9) is arranged in the through groove, and the limiting block (9) and the limiting groove (11) are pressed and matched; The production method comprises the following steps: S1: placing the coil (4) and the pins on the coil assembly (2) into a welding mechanism for welding, and then installing the coil assembly (2) and the pins into the housing (1); S2: Push the first section (6) into the groove (8), and the second section (7) passes through the sleeve (12) and the through hole; S3: pressing the pressing block (10), so that the limiting block (9) and the limiting groove (11) are pressed and matched, thereby limiting the first section (6); S4: Filling the shell (1) with glue to complete the production; The welding mechanism comprises a fixing platform (13), a welding housing (14) is arranged on the fixing platform (13), a conveying plate (31) is fixedly arranged on the fixing platform (13), a fixing mechanism is arranged on the conveying plate (31), the fixing mechanism is used to fix the coil (4) and the pin, and a welding head (30) is arranged on the upper side of the fixing platform (13), and the welding head (30) is used to weld the coil and the pin; U-shaped plates (23) are provided on the inner walls of the left and right sides of the welding housing (14); a horizontal plate (22) is fixedly provided on the side of the U-shaped plates (23) close to each other; a slide groove (43) is provided in the center of the horizontal plate (22); a sliding plate (41) is slidably provided in the slide groove (43); a direct drive member (19) is fixedly provided on the sliding plate (41) symmetrically on the left and right sides; a lower output end of the direct drive member (19) slides through the sliding plate (41); the lower output end of the direct drive member (19) is fixedly connected to the lifting plate (32); a sleeve (35) is rotatably connected to the center of the lifting plate (32); a welding head (30) is rotatably provided at the lower end of the sleeve (35); A motor (17) is fixedly arranged on the horizontal plate (22) in a symmetrical manner, a reciprocating screw (16) is fixedly connected to the output end on the lower side of the motor (17), the reciprocating screw (16) rotates and penetrates the horizontal plate (22), the reciprocating screw (16) is rotatably connected to the fixed platform (13), a moving rod (25) is threadedly connected to the reciprocating screw (16), an L-shaped connecting rod (42) is fixedly arranged on one side of the moving rod (25) close to each other, two L-shaped connecting rods (42) surround a square frame, a moving cylinder (15) is slidably arranged in the square frame, a moving groove is arranged in the moving cylinder (15), a connecting key (34) is arranged on the sleeve (35), the connecting key (34) is matched with the moving groove, and the sleeve (35) is sleeved with the moving cylinder (15); A positioning block is provided on the lifting plate (32), a rotating rod (33) is rotatably provided on the positioning block, a bevel gear 1 (39) is fixedly provided on one end of the rotating rod (33), a bevel gear 2 (36) is fixedly provided on the sleeve (35), the bevel gear 1 (39) is meshingly connected with the bevel gear 2 (36), a gear 1 (40) is fixedly provided on the other end of the rotating rod (33), a groove is provided on the lifting plate (32), a toothed plate (24) is fixedly provided on one of the moving rods (25), and the toothed plate (24) is matched with the gear 1 (40); A filter screen (53) is detachably arranged in the sleeve (35), a U-shaped limit block is fixedly arranged at the lower end of the filter screen (53), a gear 2 (47) is rotatably connected to the U-shaped limit block, a bevel gear 3 (52) is fixedly arranged on the front side of the gear 2 (47), the left side of the gear 2 (47) is meshingly connected to the gear 3 (45), a rack 1 (44) is arranged in the moving cylinder (15), a mounting groove 1 is arranged on the sleeve (35), the gear 3 (45) is rotatably connected in the mounting groove 1, the lower side of the bevel gear 3 (52) is meshingly connected to the bevel gear 4 (51), the lower end of the bevel gear 4 (51) is fixedly connected to the gear 4 (48), the left side of the gear 4 (48) is meshingly connected to the gear 5 (50), the sleeve (35) is also provided with a mounting groove 2, the gear 5 (50) is rotatably connected in the mounting groove 2, a drive rod (49) is fixedly arranged on the gear 5 (50), and an arc-shaped opening and closing plate (46) is fixedly arranged on the drive rod (49); An air pump (37) is fixedly arranged at the center of the sliding plate (41), a connecting pipe is fixedly arranged at the lower end of the air pump (37), the connecting pipe is fixedly arranged downwardly and penetrates the sliding plate (41), and the lower end of the connecting pipe is rotatably connected to the sleeve (35), an air outlet pipe (38) is connected to the air pump (37), the air outlet pipe (38) extends upward out of the welding shell (14), a cleaning box (20) is fixedly arranged at the upper end of the welding shell (14), the air outlet pipe (38) is connected to the cleaning box (20), and an adsorption block (21) is arranged in the cleaning box (20); A second rack (26) is fixedly provided symmetrically on the lower surface of the moving rod (25); a rotating rod (28) is rotatably connected to the inner walls of the left and right sides of the welding housing (14); a toothed ring (27) is fixedly provided on the rotating rod (28); the toothed ring (27) is meshingly connected with the second rack (26); and a fan blade (29) is fixedly provided on the side of the rotating rod (28) close to each other; A second linear drive member (18) is fixedly arranged on the transverse plate (22), a right output end of the second linear drive member (18) is fixedly connected to a drive block, and the drive block is fixedly arranged on the sliding plate (41).

2. The method for producing a current transformer according to claim 1, characterized in that: The lower surface of the shell (1) is provided with bilaterally symmetrical through holes, and a shaft sleeve (12) is installed on the lower surface of the shell (1), and the shaft sleeve (12) corresponds to the through hole; a plurality of clamping grooves (3) are also provided in the shell (1); and a pressing block (10) is provided on the limit block (9).

3. The method for producing a current transformer according to claim 2, characterized in that: The pin comprises a first section (6) and a second section (7), one end of the first section (6) is connected to the coil (4), the other end of the first section (6) is connected to the second section (7), the second section (7) passes through the shaft sleeve (12) and the through hole and extends out of the housing (1), and the first section (6) is matched with the groove (8).

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