Current transformer winding die

Abstract

The utility model relates to the technical field of current transformers, and provides a current transformer winding die which comprises a base and a built-in cavity. The fixing structure is arranged, the two ends of a rotating shaft are inserted into rotating grooves respectively, when one end of the rotating shaft is inserted, a clamping block is squeezed, a movable plate compresses a telescopic spring, a movable rod drives a connecting rod to move, and when the clamping block makes contact with a clamping groove, the clamping block is clamped in the clamping groove; a movable plate is driven under the elastic action of a telescopic spring, so that a clamping block is clamped into a clamping groove, a rotating shaft is installed on the outer side of an adjusting rod in a rotating groove, the adjusting rod is driven through rotation of a driven wheel, then the rotating shaft is driven to rotate, and therefore winding work of the winding mold is facilitated; and meanwhile, a pressing block is pressed to drive a connecting rod to move in a movable cavity, one end of the connecting rod drives a movable rod to move so as to drive a movable plate to move downwards to enable a telescopic spring to be compressed, accordingly, a clamping block is moved out of a clamping groove, and the rotating shaft can be conveniently mounted and dismounted.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, and particularly relates to a winding die for a current transformer. Background Art

[0002] A current transformer is an electrical device used to measure large currents. It converts high currents into low currents based on the principle of electromagnetic induction for measurement and protection purposes. A winding die for a current transformer is mainly used to improve the efficiency and accuracy of winding the coils of the current transformer.

[0003] During the use of the existing winding die for a current transformer, it is inconvenient to install and disassemble the die, which is time-consuming, laborious, and difficult to operate. At the same time, it is not convenient to install dies of different lengths and sizes, making it not easy to use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a winding die for a current transformer to solve the defect that the existing winding die for a current transformer is not convenient to install.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A winding die for a current transformer, comprising a base and an internal cavity;

[0006] The base includes an internal cavity, an installation structure, an adjustment structure, and a fixing structure. The internal cavity is arranged inside the base, and an installation structure is arranged inside the internal cavity;

[0007] An adjustment structure is arranged on one side of the base;

[0008] A fixing structure is arranged on the top end of the base.

[0009] Preferably, the installation structure includes a motor, a bidirectional threaded rod, a first slider, a second slider, a first support block, a second support block, a chute, a rotating groove, a slide rail, and a pulley. The motor is fixed on one side of the base. A bidirectional threaded rod is arranged inside the internal cavity. A first slider is arranged on the outer side of the bidirectional threaded rod. A second slider is arranged on one side of the first slider on the outer side of the bidirectional threaded rod. A first support block is fixed on the top end of the first slider. A second support block is fixed on the top end of the second slider. Chutes are arranged on both sides of the top end of the base. Rotating grooves are arranged on one side of the top ends of the first support block and the second support block. Slide rails are arranged on both sides of the bottom end of the internal cavity. Pulleys are arranged at the bottom ends of the first slider and the second slider inside the slide rails.

[0010] Preferably, one end of the bidirectional threaded rod penetrates through one side of the built-in cavity and extends to the outside of the base and is fixedly connected to the output end of the motor. Internal threads matching the outside of the bidirectional threaded rod are provided inside both the first slider and the second slider. The first slider and the second slider are respectively threadedly connected to the bidirectional threaded rod. The length of the sliding groove is the same as the length of the sliding rail.

[0011] Preferably, the adjusting structure includes a driving wheel, a transmission belt, a driven wheel, a sleeve, an adjusting rod, a limiting hole, a fixing frame, a limiting pin, a reset plate and a reset spring. The driving wheel is fixed to the outside of the bidirectional threaded rod on one side of the base. A transmission belt is arranged on the outside of the driving wheel. A driven wheel is arranged on one side inside the transmission belt. A sleeve is fixed to one end of the driven wheel. An adjusting rod is arranged inside the sleeve. A plurality of limiting holes are evenly arranged on one side of the adjusting rod. A fixing frame is fixed to one side of the sleeve. A limiting pin is arranged inside the fixing frame. A reset plate is arranged on the outside of the limiting pin at the bottom end of the fixing frame. A reset spring is arranged on the outside of the limiting pin at the top end of the reset plate.

[0012] Preferably, one end of the adjusting rod penetrates through one side of the first support block and extends into the inside of the rotating groove. A plurality of groups of limiting holes are provided. The limiting holes are evenly distributed at equal intervals on one side of the adjusting rod. The bottom end of the limiting pin penetrates through one side of the sleeve and extends into the inside of the limiting hole and forms a clamping structure with the limiting hole. The limiting pin and the reset plate form a telescopic structure through the reset spring.

[0013] Preferably, the fixing structure includes a rotating shaft, a winding die, a limiting disc, an active cavity, an internal groove, an active rod, a telescopic spring, a moving plate, a clamping block, a clamping groove, a connecting rod and a pressing block. Both ends of the rotating shaft are arranged inside the rotating groove. A winding die is fixed at the middle position on the outside of the rotating shaft. Limiting discs are fixed at both ends of the winding die on the outside of the rotating shaft. An active cavity is arranged inside one end of the adjusting rod. Internal grooves are arranged on both sides at one end of the active cavity. An active rod is arranged inside the internal groove. A telescopic spring is arranged on the outside of the active rod. A moving plate is fixed to one end of the active rod and the telescopic spring. A clamping block is fixed to one end of the moving plate. A clamping groove is arranged inside the rotating shaft on the outside of the clamping block. Connecting rods are arranged at both ends inside the active cavity. A pressing block is fixed to one end of the connecting rod.

[0014] Preferably, a through groove is provided inside one end of the rotating shaft. The bottom end of the movable rod penetrates through the bottom end of the built-in groove and extends into the interior of the movable cavity and is fixedly connected to one end of the connecting rod. The movable rod and the built-in groove form a telescopic structure through a telescopic spring. The clamping block and the clamping groove form a clamping structure. The connecting rod is arranged in an "L" shape. There are two groups of connecting rods, which are symmetrically distributed inside the movable cavity. The other ends of the connecting rods respectively penetrate through both sides of the adjusting rod and extend to the outside of the adjusting rod and are fixedly connected to one end of the pressing block.

[0015] An advantage of a current transformer winding mold provided by the present utility model is that:

[0016] By providing an installation structure, starting the motor drives the bidirectional threaded rod to rotate, so that the first slider and the second slider move away from or close to each other on the outside of the bidirectional threaded rod. Then, the first support block and the second support block are driven to slide inside the chute respectively by the movement of the first slider and the second slider. At the same time, the movement of the first slider and the second slider drives the pulley to slide inside the slide rail, so as to facilitate the installation of the winding mold of different lengths and sizes by adjusting the distance between the first support block and the second support block, and facilitate the installation and disassembly of the winding mold, thereby improving the practicability;

[0017] By providing an adjustment structure, the length of the adjusting rod inside the sleeve is adjusted according to the moving distance of the first support block. When the first support block moves to a suitable position, the adjusting rod is driven to move inside the sleeve. By pressing the limit pin, one end of the limit pin enters the inside of the limit hole under the action of the reset plate and the reset spring, and the sleeve and the adjusting rod are limited, so as to adjust the length of the adjusting rod and the sleeve, and facilitate the telescoping according to the moving distance of the first support block;

[0018] By providing a fixing structure, the two ends of the rotating shaft are respectively inserted into the rotating grooves at the tops of the first support block and the second support block. When one end of the rotating shaft is inserted into the rotating groove at the top of the first support block, a force is generated on one side of the clamping block during the insertion process, so as to squeeze the clamping block to compress the telescopic spring by the moving plate, and the movable rod drives the connecting rod to move. When the clamping block contacts the clamping groove, the force disappears, and then the moving plate is driven by the elastic force of the telescopic spring to make the clamping block snap into the inside of the clamping groove, so that the rotating shaft is installed on the outside of the adjusting rod inside the rotating groove. The adjusting rod is driven to rotate by the rotation of the driven wheel, and then the rotating shaft is driven to rotate, so as to facilitate the winding work of the winding mold. At the same time, by pressing the pressing block, the connecting rod is driven to move inside the movable cavity. One end of the connecting rod drives the movable rod to move, and then drives the moving plate to move downward to compress the telescopic spring, so as to move the clamping block out of the inside of the clamping groove, so as to facilitate the installation and disassembly of the rotating shaft. Description of the Drawings

[0019] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0020] Figure 2 is a front view sectional structure schematic diagram of the present utility model;

[0021] Figure 3 of the present utility model Figure 2 is an enlarged structure schematic diagram at position A;

[0022] Figure 4 of the present utility model Figure 2 is an enlarged structure schematic diagram at position B;

[0023] Figure 5 is a side view sectional structure schematic diagram of the present utility model.

[0024] Explanation of the reference numerals in the figure: 1, base; 101, built-in cavity; 102, mounting structure; 1021, motor; 1022, bidirectional threaded rod; 1023, first slider; 1024, second slider; 1025, first support block; 1026, second support block; 1027, chute; 1028, rotating groove; 1029, slide rail; 1020, pulley; 103, adjusting structure; 1031, driving wheel; 1032, transmission belt; 1033, driven wheel; 1034, sleeve; 1035, adjusting rod; 1036, limiting hole; 1037, fixed frame; 1038, limiting pin; 1039, reset plate; 1030, reset spring; 104, fixing structure; 1041, rotating shaft; 1042, winding die; 1043, limiting disc; 1044, movable cavity; 1045, built-in groove; 1046, movable rod; 1047, telescopic spring; 1048, moving plate; 1049, clamping block; 10410, clamping groove; 10411, connecting rod; 10412, pressing block. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5 , a wire winding die for a current transformer provided by the present utility model includes a base 1 and a built-in cavity 101.

[0027] Refer to Figure 1 , Figure 2 and Figure 5As shown, the base 1 includes a built-in cavity 101, a mounting structure 102, an adjusting structure 103, and a fixing structure 104. The built-in cavity 101 is provided inside the base 1. Inside the built-in cavity 101, there is a mounting structure 102. The mounting structure 102 includes a motor 1021, a bidirectional threaded rod 1022, a first slider 1023, a second slider 1024, a first support block 1025, a second support block 1026, a chute 1027, a rotating groove 1028, a slide rail 1029, and a pulley 1020. The motor 1021 is fixed to one side of the base 1. Inside the built-in cavity 101, there is a bidirectional threaded rod 1022. On the outside of the bidirectional threaded rod 1022, there is a first slider 1023. On one side of the first slider 1023 on the outside of the bidirectional threaded rod 1022, there is a second slider 1024. At the top of the first slider 1023, there is a fixed first support block 1025. At the top of the second slider 1024, there is a fixed second support block 1026. On both sides of the top of the base 1, there are chutes 1027. On one side of the top of the first support block 1025 and the second support block 1026, there are rotating grooves 1028. On both sides of the bottom of the built-in cavity 101, there are slide rails 1029. At the bottom of the first slider 1023 and the second slider 1024 inside the slide rails 1029, there are pulleys 1020. One end of the bidirectional threaded rod 1022 passes through one side of the built-in cavity 101 and extends to the outside of the base 1 and is fixedly connected to the output end of the motor 1021. Inside the first slider 1023 and the second slider 1024, there are internal threads matching the outside of the bidirectional threaded rod 1022. The first slider 1023 and the second slider 1024 are respectively threadedly connected to the bidirectional threaded rod 1022. The length of the chute 1027 is the same as the length of the slide rail 1029.

[0028] By starting the motor 1021 to drive the bidirectional threaded rod 1022 to rotate, the first slider 1023 and the second slider 1024 move away from or close to each other on the outside of the bidirectional threaded rod 1022. Then, the movement of the first slider 1023 and the second slider 1024 drives the first support block 1025 and the second support block 1026 to slide inside the chute 1027 respectively. At the same time, the movement of the first slider 1023 and the second slider 1024 drives the pulley 1020 to slide inside the slide rail 1029. Thus, it is convenient to install the winding die 1042 according to different lengths by adjusting the distance between the first support block 1025 and the second support block 1026, which facilitates the installation and disassembly of the winding die 1042, thereby improving the practicality.

[0029] Refer to Figure 2 and Figure 4As shown in the figure, an adjustment structure 103 is provided on one side of the base 1. The adjustment structure 103 includes a driving wheel 1031, a transmission belt 1032, a driven wheel 1033, a sleeve 1034, an adjustment rod 1035, a limiting hole 1036, a fixed frame 1037, a limiting pin 1038, a reset plate 1039, and a reset spring 1030. The driving wheel 1031 is fixed to the outer side of the bidirectional threaded rod 1022 on one side of the base 1. A transmission belt 1032 is provided on the outer side of the driving wheel 1031. A driven wheel 1033 is provided on one side inside the transmission belt 1032. One end of the driven wheel 1033 is fixed with a sleeve 1034. An adjustment rod 1035 is provided inside the sleeve 1034. A plurality of limiting holes 1036 are evenly provided on one side of the adjustment rod 1035. A fixed frame 1037 is fixed to one side of the sleeve 1034. A limiting pin 1038 is provided inside the fixed frame 1037. A reset plate 1039 is provided on the outer side of the limiting pin 1038 at the bottom end of the fixed frame 1037. A reset spring 1030 is provided on the outer side of the limiting pin 1038 at the top end of the reset plate 1039. One end of the adjustment rod 1035 penetrates through one side of the first support block 1025 and extends into the rotation groove 1028. A plurality of groups of limiting holes 1036 are provided. The limiting holes 1036 are evenly distributed on one side of the adjustment rod 1035 at equal intervals. The bottom end of the limiting pin 1038 penetrates through one side of the sleeve 1034 and extends into the limiting hole 1036 to form a clamping structure with the limiting hole 1036. The limiting pin 1038 and the reset plate 1039 form a telescopic structure through the reset spring 1030.

[0030] According to the moving distance of the first support block 1025, the length of the adjustment rod 1035 inside the sleeve 1034 is adjusted. When the first support block 1025 moves to a suitable position, the adjustment rod 1035 is driven to move inside the sleeve 1034. By pressing the limiting pin 1038, one end of the limiting pin 1038 enters the inside of the limiting hole 1036 under the action of the reset plate 1039 and the reset spring 1030, limiting the sleeve 1034 and the adjustment rod 1035, thereby adjusting the length of the adjustment rod 1035 and the sleeve 1034, and facilitating the telescoping according to the moving distance of the first support block 1025.

[0031] Refer to Figure 2 、 Figure 3 and Figure 5As shown, a fixing structure 104 is provided at the top of the base 1. The fixing structure 104 includes a rotating shaft 1041, a wire winding die 1042, a limiting disc 1043, a movable cavity 1044, an internal groove 1045, a movable rod 1046, a telescopic spring 1047, a moving plate 1048, a clamping block 1049, a clamping groove 10410, a connecting rod 10411 and a pressing block 10412. Both ends of the rotating shaft 1041 are arranged inside the rotating groove 1028. A wire winding die 1042 is fixed at the middle position on the outer side of the rotating shaft 1041. Limiting discs 1043 are fixed at both ends of the wire winding die 1042 on the outer side of the rotating shaft 1041. A movable cavity 1044 is arranged inside one end of the adjusting rod 1035. Internal grooves 1045 are arranged on both sides at one end of the movable cavity 1044. A movable rod 1046 is arranged inside the internal groove 1045. A telescopic spring 1047 is arranged on the outer side of the movable rod 1046. One end of the movable rod 1046 and the telescopic spring 1047 are fixed to a moving plate 1048. A clamping block 1049 is fixed at one end of the moving plate 1048. A clamping groove 10410 is arranged inside the rotating shaft 1041 on the outer side of the clamping block 1049. Connecting rods 10411 are arranged at both ends inside the movable cavity 1044. One end of the connecting rod 10411 is fixed to a pressing block 10412. A through groove is arranged inside one end of the rotating shaft 1041. The bottom end of the movable rod 1046 penetrates through the bottom end of the internal groove 1045 and extends into the movable cavity 1044 and is fixed to one end of the connecting rod 10411. The movable rod 1046 and the internal groove 1045 form a telescopic structure through the telescopic spring 1047. The clamping block 1049 and the clamping groove 10410 form a clamping structure. The connecting rod 10411 is arranged in an "L" shape. There are two groups of connecting rods 10411. The connecting rods 10411 are symmetrically distributed inside the movable cavity 1044. The other ends of the connecting rods 10411 respectively penetrate through both sides of the adjusting rod 1035 and extend to the outside of the adjusting rod 1035 and are fixed to one end of the pressing block 10412.

[0032] By inserting both ends of the rotating shaft 1041 into the inner part of the rotating grooves 1028 at the tops of the first support block 1025 and the second support block 1026 respectively, when one end of the rotating shaft 1041 is inserted into the inner part of the rotating groove 1028 at the top of the first support block 1025, a force is generated on one side of the clamping block 1049 during the insertion process, thereby squeezing the clamping block 1049 to compress the telescopic spring 1047 by the moving plate 1048, causing the movable rod 1046 to drive the connecting rod 10411 to move. When the clamping block 1049 contacts the card slot 10410, the force disappears. Then, under the elastic force of the telescopic spring 1047, the moving plate 1048 is driven to make the clamping block 1049 snap into the inner part of the card slot 10410, and thus the rotating shaft 1041 is installed on the outer side of the adjusting rod 1035 inside the rotating groove 1028. By the rotation of the driven wheel 1033, the adjusting rod 1035 is driven to drive the rotating shaft 1041 to rotate, facilitating the winding work of the winding die 1042. At the same time, by pressing the pressing block 10412, the connecting rod 10411 is driven to move inside the movable cavity 1044. One end of the connecting rod 10411 drives the movable rod 1046 to move and then drives the moving plate 1048 to move downward to compress the telescopic spring 1047, thereby moving the clamping block 1049 out of the inner part of the card slot 10410, facilitating the installation and disassembly of the rotating shaft 1041.

[0033] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A current transformer winding die, comprising a base (1) and a built-in cavity (101); Features: The base (1) comprises a built-in cavity (101), a mounting structure (102), an adjustment structure (103) and a fixing structure (104); the built-in cavity (101) is arranged inside the base (1), and the mounting structure (102) is arranged inside the built-in cavity (101); An adjustment structure (103) is provided on one side of the base (1); A fixing structure (104) is provided at the top of the base (1).

2. A current transformer winding die according to claim 1, characterized in that: The mounting structure (102) comprises a motor (1021), a bidirectional threaded rod (1022), a first slider (1023), a second slider (1024), a first support block (1025), a second support block (1026), a slide groove (1027), a rotation groove (1028), a slide rail (1029) and a pulley (1020); the motor (1021) is fixed to one side of the base (1); a bidirectional threaded rod (1022) is arranged inside the built-in cavity (101); a first slider (1023) is arranged outside the bidirectional threaded rod (1022); and a first slider (1023) is arranged outside the bidirectional threaded rod (1022). A second slider (1024) is provided on one side of the first slider (1023), a first support block (1025) is fixed on the top of the first slider (1023), a second support block (1026) is fixed on the top of the second slider (1024), slide grooves (1027) are provided on both sides of the top of the base (1), a rotation groove (1028) is provided on one side of the top of the first support block (1025) and the second support block (1026), slide rails (1029) are provided on both sides of the bottom of the built-in cavity (101), and pulleys (1020) are provided at the bottom of the first slider (1023) and the second slider (1024) inside the slide rails (1029).

3. A current transformer winding die according to claim 2, characterized in that: One end of the bidirectional threaded rod (1022) passes through one side of the built-in cavity (101) and extends to the outside of the base (1) and is fixedly connected to the output end of the motor (1021); the first slider (1023) and the second slider (1024) are both provided with internal threads matching the outside of the bidirectional threaded rod (1022); the first slider (1023) and the second slider (1024) are respectively threadedly connected to the bidirectional threaded rod (1022); and the length of the slide groove (1027) is the same as the length of the slide rail (1029).

4. A current transformer winding die according to claim 1, characterized in that: The adjustment structure (103) comprises a driving wheel (1031), a transmission belt (1032), a driven wheel (1033), a sleeve (1034), an adjustment rod (1035), a limiting hole (1036), a fixing frame (1037), a limiting pin (1038), a reset plate (1039) and a reset spring (1030); the driving wheel (1031) is fixed to the outer side of a bidirectional threaded rod (1022) on one side of the base (1); a transmission belt (1032) is arranged on the outer side of the driving wheel (1031); a driven wheel (1033) is arranged on one side inside the transmission belt (1032); A sleeve (1034) is fixed to one end of the driven wheel (1033), an adjusting rod (1035) is arranged inside the sleeve (1034), a limiting hole (1036) is evenly arranged on one side of the adjusting rod (1035), a fixing frame (1037) is fixed to one side of the sleeve (1034), a limiting pin (1038) is arranged inside the fixing frame (1037), a reset plate (1039) is arranged on the outer side of the limiting pin (1038) at the bottom end of the fixing frame (1037), and a reset spring (1030) is arranged on the outer side of the limiting pin (1038) at the top end of the reset plate (1039).

5. A current transformer winding die according to claim 4, characterized in that: One end of the adjusting rod (1035) passes through one side of the first supporting block (1025) and extends to the inside of the rotating groove (1028); a plurality of groups of limiting holes (1036) are provided, and the limiting holes (1036) are evenly spaced on one side of the adjusting rod (1035); the bottom end of the limiting pin (1038) passes through one side of the sleeve (1034) and extends to the inside of the limiting hole (1036) and forms a snap-fit ​​structure with the limiting hole (1036); the limiting pin (1038) and the reset plate (1039) form a telescopic structure through a reset spring (1030).

6. A current transformer winding die according to claim 4, characterized in that: The fixed structure (104) comprises a rotating shaft (1041), a winding mold (1042), a limiting disk (1043), a movable cavity (1044), a built-in groove (1045), a movable rod (1046), a telescopic spring (1047), a movable plate (1048), a clamping block (1049), a clamping groove (10410), a connecting rod (10411) and a pressing block (10412); both ends of the rotating shaft (1041) are arranged inside the rotating groove (1028); the winding mold (1042) is fixed at the middle position outside the rotating shaft (1041); the limiting disks (1043) are fixed at both ends of the winding mold (1042) outside the rotating shaft (1041); and a clamping block (1044) is arranged inside one end of the adjusting rod (1035). A movable cavity (1044), both sides of one end of the movable cavity (1044) are provided with built-in grooves (1045), a movable rod (1046) is provided inside the built-in groove (1045), a telescopic spring (1047) is provided outside the movable rod (1046), a movable plate (1048) is fixed to one end of the movable rod (1046) and the telescopic spring (1047), a clamping block (1049) is fixed to one end of the movable plate (1048), a clamping groove (10410) is provided inside the rotating shaft (1041) outside the clamping block (1049), connecting rods (10411) are provided at both ends inside the movable cavity (1044), and a pressing block (10412) is fixed to one end of the connecting rod (10411).

7. A current transformer winding die according to claim 6, characterized in that: A through groove is provided inside one end of the rotating shaft (1041); the bottom end of the movable rod (1046) passes through the bottom end of the built-in groove (1045) and extends to the inside of the movable cavity (1044) and is fixedly connected to one end of the connecting rod (10411); the movable rod (1046) and the built-in groove (1045) form a telescopic structure through a telescopic spring (1047); the clamping block (1049) and the clamping groove (10410) form a clamping structure; the connecting rod (10411) is arranged in an "L" shape; two groups of connecting rods (10411) are provided; the connecting rods (10411) are symmetrically distributed inside the movable cavity (1044); the other end of the connecting rod (10411) passes through both sides of the adjusting rod (1035) and extends to the outside of the adjusting rod (1035) and is fixedly connected to one end of the pressing block (10412).

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