A transformer coil pressing tool

Abstract

The present invention relates to the field of electrical equipment installation, and specifically to a transformer coil pressing tool, comprising a base, on which a pressing mechanism for axially and radially pressing the coil is arranged, and a twisting mechanism for twisting the coil wire is arranged in the middle of the base. The present invention adopts a clamping component to drive a clamping plate to clamp the upper and lower side surfaces of an insulated round copper wire, and then twists the insulated round copper wire at various locations through the rotation of a rotating component and the driving of a driving component, thereby offsetting the elastic force of the insulated round copper wire, so that the insulated round copper wire can still be fitted together without leaving any gaps in the absence of external force, thereby increasing the pressing effect on the coil. The present invention adopts a rotating component to twist the insulated round copper wire of the coil at various locations, and the rotating ring plate can axially press the twisted part of the coil through the clamping plate on the lower side, thereby further increasing the pressing effect.

Description

Technical Field

[0001] The invention relates to the field of transformer coil manufacturing, in particular to a transformer coil pressing tool. Background Art

[0002] The coil of the transformer is a key part of the transformer, responsible for transferring electrical energy from one coil to another through electromagnetic induction. Transformers can be divided into small transformers and large transformers according to their capacity. The coil of a small transformer is usually made of round copper wire with an insulation layer.

[0003] The coil of the transformer needs to be axially compressed to ensure that it can withstand the combined test of mechanical force and electric field force during operation. Axial compression helps to maintain the symmetry and stability of the coil, thereby improving the efficiency of the transformer and extending its service life. When the wound coil is subjected to axial pressure, the pitch between the coils decreases. The essence of this is that the insulated copper wire of the coil is twisted under the action of pressure.

[0004] When the clamping device in the prior art clamps the coil of the transformer, it usually only applies axial force to the coil, and then maintains the axial extrusion force for a period of time to cause the coil to undergo plastic deformation, thereby making the transformer coil tighter and not loose. However, when the coil is clamped in this manner, at most the outer side surfaces of the insulated round copper wires of the coil can be made to abut against each other, and the coil cannot be over-compressed, thereby failing to eliminate the elasticity of the insulated round copper wires. As a result, when the coil is removed from the clamping device, there are still gaps between the insulated round copper wires, and the clamping effect is not ideal. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a transformer coil pressing tool, including a base, on which is provided a pressing mechanism for axially and radially pressing the coil, and a twisting mechanism for twisting the coil wire is provided in the middle of the base.

[0006] The clamping mechanism includes moving blocks and moving columns which are arranged at equal intervals on the upper part of the base along the circumference of the base. The moving blocks and the moving columns are both slidably connected to the base along the radial direction. The moving blocks and the moving columns are arranged alternately with each other. A supporting roller is rotatably arranged on the upper part of the moving block. The moving column is provided with an extrusion component for extruding the coil. The base is provided with a synchronization component for driving the moving block and the moving column to move synchronously.

[0007] The torsion mechanism includes a sliding sleeve arranged in the center of the base for sliding up and down, a rotating ring plate is rotatably arranged on the upper end of the sliding sleeve, an inner support column is rotatably arranged on the upper end of the rotating ring plate, a notch is opened on the rotating ring plate, a moving frame is arranged inside the rotating ring plate for sliding along its radial direction, a clamping plate symmetrically arranged up and down and connected thereto on the side of the moving frame close to the notch of the rotating ring plate, a rotating component for rotating the wire of the coil is jointly arranged on the clamping plate and the moving frame, a clamping component for driving the two clamping plates to clamp the wire is jointly arranged on the clamping plate and the rotating ring plate, a driving component for driving the rotating component is arranged on the moving frame, a one-way screw threadedly connected to the moving frame is rotatably arranged on the rotating ring plate, and a fixing component for fixing the rotation angle of the inner support column is arranged on the base.

[0008] Preferably, the extrusion assembly includes a follower which is slidably arranged inside the movable column along the up and down directions, a pushing spring is arranged between the follower and the movable column, a movable plate is arranged on the lower side of the follower for radial sliding along the base, an abutting spring is arranged between the movable plate and the follower, an arc-shaped pressure plate is rotatably arranged on one side of the movable plate close to the center of the base, both ends of the arc-shaped pressure plate are upwardly tilted, and a rolling portion for radially rolling the coil is arranged on the upper part of the arc-shaped pressure plate.

[0009] Preferably, the rolling part includes a sliding member sliding along the arc trajectory of the arc pressure plate at its lower part, a notch plate is provided at the lower part of the sliding member through a ball hinge, a rolling roller is rotatably provided at the lower part of the notch plate, a raised column is fixedly installed at the lower part of the movable plate close to the center of the base, the notch plate cooperates with the notch of the raised column, a pushing ring plate is rotatably provided at the lower part of the base, and notch push plates fixedly connected to the inner side of the pushing ring plate are provided at equal intervals along its circumference, the notch push plates correspond to the rolling roller one by one, and the notch push plates cooperate with the notches of the rolling rollers at corresponding positions, a rotating motor is fixedly installed on the right side of the base, and the output shaft of the rotating motor is connected to the pushing ring plate through a belt.

[0010] Preferably, the synchronization component includes an active swivel rotatably arranged on a base, push-pull plates are hingedly connected to the active swivel at equal intervals along its circumference, the push-pull plates are respectively hingedly connected to moving blocks and moving columns at corresponding positions, and an electric push rod is hingedly connected to the lower side of the base and the active swivel.

[0011] Preferably, the rotating assembly includes a rotating roller rotatably arranged at one end of the clamping plate close to the notch of the rotating ring plate, an active roller rotatably arranged on the side of the movable frame away from the notch of the rotating ring plate, and symmetrically arranged tensioning blocks are radially slidably arranged along the base on the side of the movable frame away from the notch of the rotating ring plate, a tensioning spring is arranged between the tensioning blocks and the movable frame, a tensioning roller is rotatably arranged between the tensioning blocks, and a transmission belt is wound around the tensioning roller, the active roller and the two rotating rollers.

[0012] Preferably, the driving assembly includes a driven rotating rod rotatably arranged on a movable frame, the end of the driven rotating rod away from the active roller is connected to a driving wheel through a torque limiting portion, the driving wheel abuts against the bottom surface of the inner support column, the end of the driven rotating rod close to the active roller is connected to the active roller through a speed reduction portion, an actuator motor is fixedly installed at the bottom of the sliding sleeve, the output shaft of the actuator motor is fixedly connected to the rotating ring plate, and a coil spring is arranged between the sliding sleeve and the base.

[0013] Preferably, the torque limiting part includes an insertion block arranged inside the driving wheel at equal intervals along the circumference of the driving wheel, the insertion block is slidably connected to the driving wheel along the radial direction, an adjusting plate is arranged on the inner side of the driving wheel and is slidably connected along its radial direction, the adjusting plate corresponds to the insertion block one-to-one, a compression spring is arranged between the adjusting plate and the insertion block, an inclined surface is provided at one end of the insertion block close to the axis of the driving wheel, a triangular groove corresponding to the insertion block one-to-one is provided on the driven rotating rod, the inclined surface of the insertion block and the inclined surface of the triangular groove of the driven rotating rod are in corresponding positions, an adjusting disk is rotatably arranged inside the driving wheel, inclined grooves corresponding to the adjusting plates are arranged on the adjusting disk at equal intervals along its circumference, the inclined grooves of the adjusting disk cooperate with the notches of the adjusting plate at corresponding positions, rectangular grooves are arranged on the inner side surface of the adjusting disk at equal intervals along its circumference, and a locking block for inserting into the rectangular groove is elastically slidably provided on the driving wheel along its radial direction.

[0014] Preferably, the deceleration unit includes a central gear fixedly mounted on one end of the driven rotating rod close to the active roller, an outer gear ring is fixedly mounted on one end of the active roller close to the driven rotating rod, and a planetary gear meshing with the outer gear ring and the central gear is rotatably arranged on the movable frame.

[0015] Preferably, the clamping assembly includes a connecting plate hinged on the side of the clamping plate away from the notch of the rotating ring plate, a positioning frame is provided along the radial sliding side of the rotating ring plate away from the notch thereon, one end of the connecting plate away from the clamping plate is hinged on the positioning frame, an adjusting screw is rotatably provided on the positioning frame, and the adjusting screw is threadedly connected to the rotating ring plate.

[0016] Preferably, the fixing assembly includes a locking column that rotates and slides up and down and is inserted into the upper side of the base, a fixing support rod is fixedly installed on the upper end of the locking column, and a linear groove for the fixing support rod to be inserted and slide is opened on the side of the inner support column.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention adopts a clamping assembly to drive the clamping plate to clamp on the upper and lower sides of the insulated round copper wire, and then the insulated round copper wire can be twisted at various locations through the rotation of the rotating assembly and the driving of the driving assembly, thereby offsetting the elastic force of the insulated round copper wire, so that the insulated round copper wire can still be fitted together without leaving any gaps in the absence of external force, thereby increasing the clamping effect on the coil.

[0018] 2. The present invention uses a rotating component to twist the insulated round copper wire of the coil at various locations. At the same time, the rotating ring plate can axially compress the twisted part of the coil through the clamping plate on the lower side, thereby further increasing the compression effect, and the extrusion component can axially compress the coil to ensure the compression effect of the coil. In addition, the extrusion component can also roll the outer side of the coil, so that the coil can quickly eliminate its own elastic force, thereby improving the efficiency of compressing the coil.

[0019] 3. The present invention adopts abutting roller to radially extrude the coil, so that the insulated round copper wire of the coil is close to the outer side surface of the inner support column, thereby preventing the insulated round copper wires from being misaligned with each other. At the same time, the extrusion component can not only axially extrude the coil, but also reciprocately roll the insulated round copper wire circumferentially, further avoiding the insulated round copper wires from being misaligned with each other, and further ensuring the compression effect of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the base, synchronous assembly, moving block and moving column in the present invention.

[0023] Figure 3 It is a structural schematic diagram of the base, the active rotating ring and the electric push rod in the present invention.

[0024] Figure 4 It is a partial fracture diagram of the extrusion assembly and the moving column in the present invention.

[0025] Figure 5 It is a partial structural schematic diagram of the extrusion assembly in the present invention after removing the follower, the push ring plate, the notch push plate and the rotating motor.

[0026] Figure 6 It is a structural schematic diagram of the base, the push ring plate, the notch push plate and the rotating motor in the present invention.

[0027] Figure 7 It is a cross-sectional view of the base, sliding sleeve, rotating ring plate, inner support column and fixed assembly in the present invention.

[0028] Figure 8 It is a schematic diagram of the partial structure of the torsion mechanism of the present invention after the inner support column is removed.

[0029] Fig. 9 It is a cross-sectional view of the sliding sleeve, the rotating ring plate and the actuator motor in the present invention.

[0030] Fig.10 It is a cross-sectional view of the torsion mechanism of the present invention after removing the sliding sleeve, the inner support column and the actuator motor.

[0031] Fig.11 It is a cross-sectional view of the movable frame, the clamping plate and the rotating assembly in the present invention.

[0032] Fig.12 It is a partial structural schematic diagram of the movable frame, active roller and driving assembly in the present invention after the execution motor is removed.

[0033] Fig.13 It is a partial structural schematic diagram of the movable frame, the active roller, the driven rotating rod and the speed reduction part in the present invention.

[0034] Fig.14 It is a cross-sectional view of the driving wheel, the driven rotating rod, the insert block and the adjusting plate in the present invention.

[0035] Fig.15 It is a structural schematic diagram of the driving wheel, the adjusting disc, the adjusting plate and the locking block in the present invention.

[0036] Fig.16 It is a structural schematic diagram of the adjustment disk in the present invention.

[0037] In the figure: 1, base; 2, clamping mechanism; 3, torsion mechanism; 21, moving block; 22, moving column; 23, abutting roller; 24, extrusion assembly; 25, synchronization assembly; 30, fixed assembly; 31, sliding sleeve; 32, rotating ring plate; 33, inner support column; 34, moving frame; 35, clamping plate; 36, rotating assembly; 37, clamping assembly; 38, driving assembly; 39, one-way screw; 241, follower; 242, moving plate; 243, arc pressure plate; 244, rolling part; 251, active swivel; 252, push-pull plate; 253, electric push rod; 301, locking column; 302, fixed support rod; 361, rotating roller; 362, main moving roller; 363, tensioning block; 364, tensioning roller; 365, transmission belt; 371, connecting plate; 372, position frame; 373, adjusting screw; 381, driven rotating rod; 382, ​​torque limiting part; 383, driving wheel; 384, speed reduction part; 385, execution motor; 2441, sliding member; 2442, notched plate; 2443, rolling roller; 2444, raised column; 2445, pushing ring plate; 2446, notched push plate; 2447, rotating motor; 3821, insertion block; 3822, adjusting plate; 3823, adjusting disk; 3824, locking block; 3841, central gear; 3842, outer gear ring; 3843, planetary gear. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

[0039] See also Figure 1 , Figure 7 and Figure 8 A transformer coil pressing tool comprises a base 1, on which a pressing mechanism 2 for axially and radially pressing the coil is arranged, and a twisting mechanism 3 for twisting the coil wire is arranged in the middle of the base 1.

[0040] When the coil of the transformer needs to be compressed, the operator first places the coil at the upper center position of the base 1 so that the coil is located inside the compression mechanism 2, and then twists the insulated round copper wire of the coil one by one through the twisting mechanism 3, and at the same time, squeezes the coil axially and radially through the compression mechanism 2.

[0041] See also Figure 1 , Figure 2 and Figure 7 The torsion mechanism 3 includes a sliding sleeve 31 which is slidably arranged at the center of the base 1 up and down, a rotating ring plate 32 is rotatably arranged on the upper end of the sliding sleeve 31, an inner support column 33 is rotatably arranged on the upper end of the rotating ring plate 32, and a notch is opened on the rotating ring plate 32. The clamping mechanism 2 includes a moving block 21 and a moving column 22 which are equidistantly arranged on the upper part of the base 1 along the circumference of the base 1, the moving block 21 and the moving column 22 are both slidably connected to the base 1 along the radial direction thereof, the moving block 21 and the moving column 22 are staggered with each other, and a supporting roller 23 is rotatably arranged on the upper part of the moving block 21.

[0042] When the coil needs to be compressed, the operator sleeves the coil on the outside of the inner support column 33 so that the lower side of the coil is placed on the base 1 . At this time, the coil is located on the inner side of the abutting roller 23 and the movable column 22 .

[0043] Continue reading Figure 1 , Figure 2 and Figure 7 The torsion mechanism 3 also includes a fixing assembly 30 arranged on the base 1 for fixing the rotation angle of the inner support column 33. The fixing assembly 30 includes a locking column 301 that rotates and slides up and down and is inserted on the upper side of the base 1. A fixing support rod 302 is fixedly installed on the upper end of the locking column 301. A linear groove is opened on the side of the inner support column 33 for the fixing support rod 302 to be inserted and slide.

[0044] When the coil is placed on the outside of the inner support column 33, the operator manually pulls the locking column 301 upwards and rotates the locking column 301 at the same time, so that the locking column 301 drives the fixed support rod 302 thereon to rotate to the upper side of the linear groove of the inner support column 33. Then the operator presses down the locking column 301, so that the locking column 301 drives the fixed support rod 302 to be inserted into the linear groove of the inner support column 33, thereby preventing the inner support column 33 from rotating.

[0045] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 The clamping mechanism 2 also includes a synchronization component 25 arranged on the base 1 for driving the moving block 21 and the moving column 22 to move synchronously. The synchronization component 25 includes an active swivel 251 rotatably arranged on the base 1. Push-pull plates 252 are hinged on the active swivel 251 at equal intervals along its circumference. The push-pull plates 252 are respectively hinged to the moving block 21 and the moving column 22 at corresponding positions. An electric push rod 253 is hinged on the lower side of the base 1 and the active swivel 251.

[0046] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The clamping mechanism 2 also includes an extrusion assembly 24 arranged on the moving column 22 for extruding the coil. The extrusion assembly 24 includes a follower 241 slidably arranged inside the moving column 22 along the up and down directions. A push spring is arranged between the follower 241 and the moving column 22. A moving plate 242 is arranged on the lower side of the follower 241 to slide radially along the base 1. A supporting spring is arranged between the moving plate 242 and the follower 241. An arc-shaped pressing plate 243 is rotatably arranged on one side of the moving plate 242 close to the center of the base 1, and both ends of the arc-shaped pressing plate 243 are tilted upward.

[0047] When the fixed support rod 302 is inserted into the linear groove of the inner support column 33, the telescopic section of the electric push rod 253 is extended to drive the active swivel 251 to rotate. At the same time, the operator pulls the follower 241 upward, so that the follower 241 drives the arc pressure plate 243 to move to the upper side of the coil through the moving plate 242.

[0048] Subsequently, the active rotating ring 251 pushes the moving block 21 and the moving column 22 toward the inner support column 33 through the push-pull plate 252, so that the moving block 21 drives the abutting roller 23 thereon to abut against the outer side of the coil, and then the coil is radially squeezed by the push of the abutting roller 23, so that the insulated round copper wire of the coil is tightly against the outer side of the inner support column 33, preventing the insulated round copper wires from being misaligned with each other.

[0049] When the movable column 22 moves in the direction close to the inner support column 33, the movable column 22 drives the arc pressure plate 243 to move synchronously through the follower 241 and the movable plate 242. When the abutting roller 23 abuts against the outer surface of the coil, the abutting spring pushes the arc pressure plate 243 to also abut against the cylindrical surface of the inner support column 33. Then, the external force on the follower 241 is removed, so that the pushing spring drives the arc pressure plate 243 to axially squeeze the coil by pushing the follower 241 downward, thereby axially pressing the coil. The rotating arc pressure plate 243 can automatically adapt to the inclination of the spiral insulated round copper wire to avoid the arc pressure plate 243 only contacting the insulating round copper wire at points, thereby ensuring the pressing effect on the coil.

[0050] See also Figure 1 , Figure 7 , Figure 8 , Fig.10 and Fig.11 The torsion mechanism 3 also includes a moving frame 34 which is arranged inside the rotating ring plate 32 for radial sliding. A clamping plate 35 which is symmetrically arranged on the side of the moving frame 34 close to the notch of the rotating ring plate 32 for vertical sliding connection thereon is provided. The clamping plate 35 and the rotating ring plate 32 are jointly provided with a clamping assembly 37 which drives the two clamping plates 35 to clamp the wire. A one-way screw 39 which is rotatably arranged on the rotating ring plate 32 and is threadedly connected to the moving frame 34 is provided.

[0051] See also Figure 8 , Fig.10 and Fig.11 The clamping assembly 37 includes a connecting plate 371 hinged on the side of the clamping plate 35 away from the notch of the rotating ring plate 32, and a position frame 372 is provided on the side of the rotating ring plate 32 away from the notch thereof for radial sliding. One end of the connecting plate 371 away from the clamping plate 35 is hinged on the position frame 372, and an adjusting screw 373 is rotatably provided on the position frame 372, and the adjusting screw 373 is threadedly connected to the rotating ring plate 32.

[0052] When the arc pressure plate 243 is squeezed on the insulated round copper wire, the operator uses the hexagonal wrench to simultaneously rotate the adjusting screw 373 and the one-way screw 39, so that the one-way screw 39 drives the movable frame 34 to move, so that the movable frame 34 drives the clamping plate 35 to extend out from the notch of the rotating ring plate 32, and then the clamping plates 35 on the upper and lower sides are located on both sides of the insulated round copper wire on the lower side of the coil. Since the adjusting screw 373 drives the position frame 372 to move synchronously with the movable frame 34, the distance between the position frame 372 and the movable frame 34 remains approximately unchanged, so that the connecting plate 371 will not excessively pull the clamping plate 35, and then the clamping plate 35 will not clamp the insulated round copper wire. At this time, the upper clamping plate 35 is located on the lower side of the arc pressure plate 243, and the clamping plate 35 away from the movable frame 34 will not contact the abutting roller 23.

[0053] When the clamping plates 35 are located on the upper and lower sides of the insulated round copper wire, the operator reverses the adjusting screw 373 with an Allen wrench so that the adjusting screw 373 drives the positioning frame 372 to move away from the movable frame 34, thereby causing the movable frame 34 to pull the two clamping plates 35 closer to each other through the connecting plate 371, thereby clamping the two clamping plates 35 on the insulated round copper wire.

[0054] See also Figure 1 , Figure 8 , Fig.10 and Fig.11 The torsion mechanism 3 also includes a rotating assembly 36 for rotating the wire of the coil, which is jointly arranged on the clamping plate 35 and the moving frame 34. The rotating assembly 36 includes a rotating roller 361 rotatably arranged at one end of the clamping plate 35 close to the notch of the rotating ring plate 32, and an active roller 362 is rotatably arranged on the side of the moving frame 34 away from the notch of the rotating ring plate 32. A symmetrically arranged tensioning block 363 is radially slidably arranged along the base 1 on the side of the moving frame 34 away from the notch of the rotating ring plate 32. A tensioning spring is arranged between the tensioning block 363 and the moving frame 34. A tensioning roller 364 is rotatably arranged between the tensioning blocks 363. A transmission belt 365 is wound around the tensioning roller 364, the active roller 362 and the two rotating rollers 361.

[0055] When the clamping plate 35 is clamped on the insulated round copper wire, the clamping plate 35 drives the transmission belt 365 to synchronously press against the insulated round copper wire through the rotating roller 361. When the parts of the transmission belt 365 located between the two clamping plates 35 approach each other, the tensioning spring makes the tensioning block 363 and the tensioning roller 364 move adaptively to ensure that the transmission belt 365 is always taut.

[0056] See also Figure 1 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 The torsion mechanism 3 also includes a driving assembly 38 arranged on the mobile frame 34 for driving the rotating assembly 36. The driving assembly 38 includes a driven rotating rod 381 rotatably arranged on the mobile frame 34. The end of the driven rotating rod 381 away from the active roller 362 is connected to the driving wheel 383 through the torque limiting part 382. The driving wheel 383 abuts against the bottom surface of the inner support column 33. The end of the driven rotating rod 381 close to the active roller 362 is connected to the active roller 362 through the speed reduction part 384. An actuator motor 385 is fixedly installed at the bottom of the sliding sleeve 31. The output shaft of the actuator motor 385 is fixedly connected to the rotating ring plate 32. A coil spring is arranged between the sliding sleeve 31 and the base 1.

[0057] See also Figure 8 , Fig.10 , Fig.12 , Fig.13 and Fig.14The torque limiting portion 382 includes an insertion block 3821 arranged at equal intervals along the circumference of the driving wheel 383, the insertion block 3821 is slidably connected to the driving wheel 383 along the radial direction, and an adjustment plate 3822 is arranged on the inner side of the driving wheel 383 and slidably connected along the radial direction. The adjustment plate 3822 corresponds to the insertion block 3821 one by one, and a compression spring is arranged between the adjustment plate 3822 and the insertion block 3821. An inclined surface is provided at one end of the insertion block 3821 close to the axis of the driving wheel 383, and a triangular groove corresponding to the insertion block 3821 is provided on the driven rotating rod 381, and the inclined surface of the insertion block 3821 and the inclined surface of the triangular groove of the driven rotating rod 381 are in corresponding positions.

[0058] See also Figure 8 , Fig.10 , Fig.12 and Fig.13 The speed reduction unit 384 includes a central gear 3841 fixedly mounted on one end of the driven rotating rod 381 close to the active roller 362, an outer gear ring 3842 is fixedly mounted on one end of the active roller 362 close to the driven rotating rod 381, and a planetary gear 3843 meshing with the outer gear ring 3842 and the central gear 3841 is rotatably arranged on the movable frame 34.

[0059] When the transmission belt 365 is against the insulated round copper wire, the execution motor 385 is started to drive the rotating ring plate 32 to rotate, so that the rotating ring plate 32 drives the clamping plate 35 to rotate through the moving frame 34, and when the moving frame 34 rotates, it drives the driving wheel 383 to rotate on the bottom surface of the inner support column 33. Since the inner support column 33 does not rotate, the friction force of the inner support column 33 on the driving wheel 383 drives the driving wheel 383 to rotate itself. When the driving wheel 383 rotates, it drives the driven rotating rod 381 to rotate synchronously through the insertion block 3821, and the driven rotating rod 381 drives the central gear 3841 to rotate, and the central gear 3841 drives the outer gear ring 3842 to decelerate through the planetary gear 3843, so that the outer gear ring 3842 drives the transmission belt 365 through the active roller 362 to twist the insulated round copper wire, removes the elastic force of the insulated round copper wire, so that the insulated round copper wire can still fit together without leaving any gaps in the absence of external force.

[0060] When the rotating ring plate 32 drives the clamping plate 35 to rotate, the clamping plate 35 rotates along the spirally arranged insulated round copper wire, so that the insulated round copper wire gradually lifts the clamping plate 35 upward, so that the clamping plate 35 drives the transmission belt 365 to twist all parts of the insulated round copper wire, and when the clamping plate 35 moves upward, it drives the rotating ring plate 32 upward synchronously, and the rotating ring plate 32 drives the inner support column 33 and the sliding sleeve 31 to move upward synchronously, and at the same time, the sliding sleeve 31 is pulled downward by the elastic force of the spiral spring, so that the sliding sleeve 31 drives the clamping plate 35 to axially squeeze the insulated round copper wire through the rotating ring plate 32, further increasing the clamping effect.

[0061] When the insulated round copper wire is twisted to the limit, the transmission belt 365 can no longer twist the insulated round copper wire, while the driving wheel 383 continues to rotate, and the driving wheel 383 drives the insertion block 3821 to slide along the inclined surface of the driven rotating rod 381, so that the driven rotating rod 381 pushes the insertion block 3821, so that the insertion block 3821 withdraws from the inside of the triangular groove, and then the driving wheel 383 no longer drives the driven rotating rod 381 to rotate, and the driven rotating rod 381 no longer drives the transmission belt 365 to twist the insulated round copper wire, thereby preventing excessive torsional force from being applied to the insulated round copper wire, causing damage to the insulated round copper wire.

[0062] See also Figure 8 , Fig.10 , Fig.12 , Fig.13 , Fig.14 , Fig.15 and Fig.16 The torque limiting part 382 also includes an adjusting disk 3823 rotatably arranged inside the driving wheel 383, and the adjusting disk 3823 is provided with inclined grooves corresponding to the adjusting plate 3822 at equal intervals along its circumference. The inclined grooves of the adjusting disk 3823 cooperate with the notches of the adjusting plate 3822 at corresponding positions, and rectangular grooves are provided on the inner side surface of the adjusting disk 3823 at equal intervals along its circumference. A locking block 3824 for inserting into the rectangular groove is elastically slidably arranged along its radial direction on the driving wheel 383.

[0063] When twisting the insulated round copper wires of different diameters, the operator pulls the locking block 3824 out of the rectangular groove of the adjusting disk 3823, so that the adjusting disk 3823 can rotate freely. Then the operator rotates the adjusting disk 3823 as needed, so that the adjusting disk 3823 drives the adjusting plate 3822 to move radially along the driving wheel 383 through the inclined groove thereon, thereby changing the pre-compression degree of the compression spring by the adjusting plate 3822, and then adjusting the maximum torque of the driven rotating rod 381 driven by the driving wheel 383 to rotate, so as to apply appropriate twisting force to the insulated round copper wires of different diameters, and then removes the external force on the locking block 3824, so that the locking block 3824 is inserted into the rectangular groove at the corresponding position again.

[0064] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The extrusion assembly 24 also includes a rolling portion 244 arranged on the arc-shaped pressing plate 243 for radially rolling the coil. The rolling portion 244 includes a sliding member 2441 sliding along the arc-shaped track of the arc-shaped pressing plate 243 at its lower part. A notch plate 2442 is arranged at the lower part of the sliding member 2441 through a ball hinge. A rolling roller 2443 is rotatably arranged at the lower part of the notch plate 2442. A protruding column 2444 is fixedly installed at the lower part of the movable plate 242 near the center of the base 1. The notch plate 2442 In cooperation with the notch of the raised column 2444, a pushing ring plate 2445 is rotatably provided at the lower part of the base 1, and notch push plates 2446 fixedly connected to the inner side of the pushing ring plate 2445 are arranged at equal intervals along its circumference, and the notch push plates 2446 correspond one to one with the rolling roller 2443, and the notch push plates 2446 cooperate with the notch of the rolling roller 2443 at the corresponding position, and a rotating motor 2447 is fixedly installed on the right side of the base 1, and the output shaft of the rotating motor 2447 is connected to the pushing ring plate 2445 through a belt.

[0065] When the arc pressure plate 243 is against the outer side of the inner support column 33 and squeezed on the upper side of the coil, the arc pressure plate 243 drives the rolling roller 2443 to fit on the outer side of the coil through the sliding member 2441. When the execution motor 385 is started, the rotating motor 2447 is started synchronously, so that the rotating motor 2447 drives the push ring plate 2445 to rotate reciprocatingly, and the push ring plate 2445 pushes the rolling roller 2443 to move reciprocatingly through the notch push plate 2446, so that the rolling roller 2443 moves reciprocatingly along the arc trajectory of the arc pressure plate 243 through the notch plate 2442 and the sliding member 2441, and then the rolling roller 2443 rolls the outer side of the coil, so that the coil can quickly eliminate its own elastic force, thereby improving the efficiency of pressing the coil.

[0066] See also Figure 1-Figure 16 When the coil is compressed, the present invention also includes the following steps: In the first step, the operator sets the coil on the outside of the inner support column 33, and then the operator manually inserts the fixed support rod 302 into the linear groove of the inner support column 33. The operator pulls the arc pressure plate 243 upward to the upper side of the coil, and then extends the telescopic section of the electric push rod 253 to drive the abutment roller 23 to abut against the outer side of the coil, and at the same time makes the arc pressure plate 243 axially squeezed on the coil.

[0067] In the second step, the operator rotates the adjusting screw 373 and the one-way screw 39 so that the upper and lower clamping plates 35 are located on both sides of the insulated round copper wire on the lower side of the coil. Then the operator reverses the adjusting screw 373 so that the two clamping plates 35 are close to each other, and then the clamping plates 35 drive the transmission belt 365 to rest against the insulated round copper wire.

[0068] The third step is to start the execution motor 385 to drive the clamping plate 35 to rotate, so that the driving wheel 383 drives the transmission belt 365 to twist the insulated round copper wire. At the same time, the clamping plate 35 rotates along the spirally arranged insulated round copper wire, so that the insulated round copper wire gradually lifts the clamping plate 35 upward, so that the clamping plate 35 drives the transmission belt 365 to twist various parts of the insulated round copper wire.

[0069] The fourth step is to start the rotating motor 2447 to drive the rolling roller 2443 to move back and forth along the arc track of the arc pressure plate 243, so that the rolling roller 2443 rolls the outer side of the coil, so that the coil can quickly eliminate its own elastic force, thereby improving the efficiency of coil compression.

[0070] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A transformer coil pressing tool, comprising a base (1), characterized in that: A pressing mechanism (2) for pressing the coil axially and radially is arranged on the base (1), and a twisting mechanism (3) for twisting the coil wire is arranged in the middle of the base (1); The clamping mechanism (2) comprises a moving block (21) and a moving column (22) which are arranged at equal intervals on the upper part of the base (1) along the circumference thereof, the moving block (21) and the moving column (22) are both slidably connected to the base (1) along the radial direction thereof, the moving block (21) and the moving column (22) are arranged alternately with each other, a supporting roller (23) is rotatably arranged on the upper part of the moving block (21), a pressing component (24) for pressing the coil is arranged on the moving column (22), and a synchronizing component (25) for driving the moving block (21) and the moving column (22) to move synchronously is arranged on the base (1); The torsion mechanism (3) comprises a sliding sleeve (31) slidably arranged at the center of the base (1) up and down, a rotating ring plate (32) is rotatably arranged at the upper end of the sliding sleeve (31), an inner support column (33) is rotatably arranged at the upper end of the rotating ring plate (32), a notch is provided on the rotating ring plate (32), a moving frame (34) is slidably arranged inside the rotating ring plate (32) along its radial direction, a clamping plate (35) slidably connected to the moving frame (34) is symmetrically arranged up and down on one side of the moving frame (34) close to the notch of the rotating ring plate (32), and the clamping plate (35) and the moving frame are rotatably connected to each other up and down. The rotating frame (34) is provided with a rotating assembly (36) for rotating the wire of the coil, the clamping plate (35) and the rotating ring plate (32) are provided with a clamping assembly (37) for driving the two clamping plates (35) to clamp the wire, the movable frame (34) is provided with a driving assembly (38) for driving the rotating assembly (36), the rotating ring plate (32) is rotatably provided with a one-way screw (39) threadedly connected to the movable frame (34), and the base (1) is provided with a fixing assembly (30) for fixing the rotation angle of the inner support column (33); The extrusion assembly (24) comprises a follower (241) slidably arranged inside the moving column (22) along the up-down direction, a push spring is arranged between the follower (241) and the moving column (22), a moving plate (242) is arranged on the lower side of the follower (241) to slide along the radial direction of the base (1), a contact spring is arranged between the moving plate (242) and the follower (241), an arc-shaped pressing plate (243) is rotatably arranged on one side of the moving plate (242) close to the center of the base (1), both ends of the arc-shaped pressing plate (243) are tilted upwards, and a rolling portion (244) for radially rolling the coil is arranged on the upper side of the arc-shaped pressing plate (243); The clamping assembly (37) comprises a connecting plate (371) hinged on the side of the clamping plate (35) away from the notch of the rotating ring plate (32); a position frame (372) is provided on the side of the rotating ring plate (32) away from the notch thereof so as to slide radially along the side; one end of the connecting plate (371) away from the clamping plate (35) is hinged on the position frame (372); an adjusting screw (373) is rotatably provided on the position frame (372); and the adjusting screw (373) is threadedly connected to the rotating ring plate (32).

2. A transformer coil pressing tool according to claim 1, characterized in that: The rolling portion (244) comprises a sliding member (2441) sliding along the arc track of the arc pressure plate (243) at its lower part, a notch plate (2442) is provided at the lower part of the sliding member (2441) through a ball hinge, a rolling roller (2443) is rotatably provided at the lower part of the notch plate (2442), a raised column (2444) is fixedly installed at the lower part of the movable plate (242) near the center of the base (1), the notch plate (2442) and the raised column (2444) are matched with each other, and the lower part of the base (1) is provided with a notch plate (2442). A push ring plate (2445) is rotatably provided, and notched push plates (2446) fixedly connected to the inner side of the push ring plate (2445) are evenly spaced along its circumference, and the notched push plates (2446) correspond to the rolling rollers (2443) one by one, and the notched push plates (2446) cooperate with the notches of the rolling rollers (2443) at corresponding positions. A rotating motor (2447) is fixedly installed on the right side of the base (1), and the output shaft of the rotating motor (2447) is connected to the push ring plate (2445) through a belt.

3. The transformer coil pressing tool according to claim 1, characterized in that: The synchronization component (25) comprises an active rotating ring (251) rotatably arranged on a base (1), push-pull plates (252) being hingedly connected to the active rotating ring (251) at equal intervals along its circumference, the push-pull plates (252) being hingedly connected to a moving block (21) and a moving column (22) at corresponding positions respectively, and an electric push rod (253) being hingedly connected to the lower side of the base (1) and the active rotating ring (251).

4. The transformer coil pressing tool according to claim 1, characterized in that: The rotating assembly (36) comprises a rotating roller (361) rotatably arranged on one end of the clamping plate (35) close to the notch of the rotating ring plate (32); an active roller (362) rotatably arranged on the side of the movable frame (34) away from the notch of the rotating ring plate (32); a symmetrically arranged tensioning block (363) is slidably arranged along the radial direction of the base (1) on the side of the movable frame (34) away from the notch of the rotating ring plate (32); a tensioning spring is arranged between the tensioning block (363) and the movable frame (34); a tensioning roller (364) is rotatably arranged between the tensioning blocks (363); and a transmission belt (365) is wound around the tensioning roller (364), the active roller (362) and the two rotating rollers (361).

5. The transformer coil pressing tool according to claim 4, characterized in that: The driving assembly (38) comprises a driven rotating rod (381) rotatably arranged on the moving frame (34); one end of the driven rotating rod (381) away from the driving roller (362) is connected to a driving wheel (383) via a torque limiting portion (382); the driving wheel (383) abuts against the bottom surface of the inner support column (33); one end of the driven rotating rod (381) close to the driving roller (362) is connected to the driving roller (362) via a speed reduction portion (384); an actuator motor (385) is fixedly installed at the bottom of the sliding sleeve (31); the output shaft of the actuator motor (385) is fixedly connected to the rotating ring plate (32); and a coil spring is arranged between the sliding sleeve (31) and the base (1).

6. The transformer coil pressing tool according to claim 5, characterized in that: The torque limiting part (382) comprises an insertion block (3821) which is arranged at equal intervals along the circumference of the driving wheel (383) inside the driving wheel (383); the insertion block (3821) is slidably connected to the driving wheel (383) along the radial direction; an adjustment plate (3822) which is slidably connected to the driving wheel (383) along the radial direction is arranged inside the driving wheel (383); the adjustment plate (3822) corresponds to the insertion block (3821) one by one; a compression spring is arranged between the adjustment plate (3822) and the insertion block (3821); an inclined surface is provided at one end of the insertion block (3821) close to the axis of the driving wheel (383); a spring which is connected to the insertion block (3821) is provided on the driven rotating rod (381); The inclined surface of the insertion block (3821) and the inclined surface of the triangular groove of the driven rotating rod (381) are in corresponding positions. An adjusting disk (3823) is rotatably arranged inside the driving wheel (383). Inclined grooves corresponding to the adjusting plate (3822) are arranged at equal intervals along its circumference on the adjusting disk (3823). The inclined grooves of the adjusting disk (3823) match with the notches of the adjusting plate (3822) at corresponding positions. Rectangular grooves are arranged at equal intervals along its circumference on the inner side surface of the adjusting disk (3823). A locking block (3824) for inserting into the rectangular groove is elastically slidably arranged along its radial direction on the driving wheel (383).

7. The transformer coil pressing tool according to claim 5, characterized in that: The deceleration unit (384) comprises a central gear (3841) fixedly mounted on one end of the driven rotating rod (381) close to the driving roller (362); an outer gear ring (3842) is fixedly mounted on one end of the driving roller (362) close to the driven rotating rod (381); and a planetary gear (3843) is rotatably arranged on the movable frame (34) and meshes with the outer gear ring (3842) and the central gear (3841).

8. The transformer coil pressing tool according to claim 1, characterized in that: The fixing assembly (30) comprises a locking column (301) which is rotated and slidably inserted into the upper side of the base (1); a fixing support rod (302) is fixedly mounted on the upper end of the locking column (301); and a linear groove is provided on the side of the inner support column (33) for the fixing support rod (302) to be inserted and slide.

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