Transformer foil winding lead device and process thereof

Abstract

The present invention relates to the technical field of transformer-specific foil winding machines, and specifically to a transformer foil winding lead device and a process thereof, comprising a support frame, a support material plate fixedly arranged on the support frame, a shearing groove arranged on the support material plate, and a through hole arranged on one side of the support frame above the support material plate, support carrier plates symmetrically fixedly arranged on the support frame at the upper and lower ends of the through hole, a mounting support plate fixedly arranged on the support carrier plate, and an electric telescopic rod fixedly installed on the mounting support plate. The present invention also relates to a transformer foil coil winding process, comprising the following steps: step one: making lead insulation; step two: installing a winding die; step three: installing an interlayer insulating DMD prepreg cloth; step four: processing foil material; step five: reserving leads; step six: bending the foil material into strips; and step seven: grinding and wrapping the foil leads.

Description

Technical Field

[0001] The invention relates to the technical field of a special foil winding machine for transformers, in particular to a transformer foil winding lead device and a process thereof. Background Art

[0002] The present invention is applied to the field of power transmission and distribution of electric power engineering. The winding is the core component of the transformer, which completes the transmission and conversion of electric energy. The manufacturing process of the winding is complex and the technical difficulty is high. When the rated current of the transformer is very large, in order to facilitate operation, improve production efficiency, reduce loss, save materials and other factors, the transformer winding needs to be wound with copper foil or aluminum foil. The general foil winding needs to be equipped with a special foil winding machine, and the foil winding machine also needs to be equipped with foil transverse shearing equipment, argon arc welding machine, etc. The head and tail of the winding foil need to be welded to the conductive bar respectively to ensure reliable electrical connection with the outside. The conductive bar needs to be prefabricated and bent according to the drawing in advance. In the process of welding the foil and the conductive bar, the welding current needs to be strictly set according to the material, thickness and other parameters of the foil and the conductive bar. If the current is improperly adjusted or the operation is wrong, it is easy to cause welding through or false welding, resulting in unreliable electrical connection. Local overheating will occur when the transformer is running, and argon gas is harmful to the health of the operator during welding. The weld needs to be polished after welding. If metal chips splash to the interlayer area, it may cause the insulation between the winding layers to be punctured and broken down. When the transformer is running, the end of the conductive bar at the beginning of the winding is affected by the transverse leakage magnetic field, and the tail conductive bar is affected by the longitudinal leakage magnetic field in the main air channel. During operation, the eddy current loss of the conductive bar will be very large, and the larger the cross-sectional size of the conductive bar, the greater the eddy current loss generated. When the foil and the conductive bar are welded, the spatial position of the conductive bar terminal will be completely fixed. In the subsequent general assembly process, if the cumulative error of the overall assembly of the transformer is large, the terminal and the fixing parts will be unable to be installed and fixed.

[0003] After the foil coil is wound, the material needs to be cut, that is, the cutting purpose is achieved by the lateral movement of the shearing knife. The shearing knife on the existing foil winding machine is fixed by screws during installation. Although the screw fixing method is relatively simple, the screws are prone to loosening after a long time during the operation of the knife, resulting in unstable installation of the knife, affecting the normal shearing operation. In addition, in order to ensure the firmness of the knife installation, multiple screws are generally used for installation. Due to the limitation of the foil winding machine structure, it is inconvenient to operate the tool when replacing the knife, and multiple screws need to be operated, which makes the installation of the knife more troublesome and not convenient enough. At the same time, it cannot be quickly disassembled during disassembly, resulting in that when the knife needs to be replaced, it often takes a lot of time to install the knife, which makes the work intensity of the staff greater. Summary of the invention

[0004] The object of the present invention is to provide a transformer foil winding lead device and a process thereof to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A transformer foil winding lead device comprises a support frame, a support material plate is fixedly arranged on the support frame, a shearing groove is opened on the support material plate, and a through hole is opened on one side of the support frame above the support material plate, support carrier plates are symmetrically fixedly arranged on the support frame at the upper and lower ends of the through hole, a mounting support plate is fixedly arranged on the support carrier plate, an electric telescopic rod is fixedly installed on the mounting support plate, a limited matching plate is fixedly arranged on the upper side of the support frame, an oblique warping portion is arranged on the end of the limited matching plate close to the through hole, and a convenient and detachable shearing knife mechanism is arranged on the electric telescopic rod.

[0007] Preferably, the convenient and detachable shearing knife mechanism includes a load-bearing matching plate, an installation movable plate, a first connecting spring, a driving connecting strip, a connecting strip frame, an installation plate, a movable bending plate, a second connecting spring and a movable locking plate. The load-bearing matching plate is fixedly installed on the electric telescopic rod, and a supporting matching rod is symmetrically fixedly arranged on the upper end of the load-bearing matching plate, and a supporting bottom block is symmetrically fixedly arranged on the lower end of the load-bearing matching plate, and a plug-in guide hole is opened on the supporting bottom block.

[0008] Preferably, a mounting movable plate is installed on the bearing matching plate, a supporting upright is fixedly provided on the mounting movable plate, a mounting frame is fixedly provided on the supporting upright, a rotating wheel is installed on the mounting frame, and a protruding connecting plate is fixedly provided on the mounting frame, and a first matching hinge rod is symmetrically hinged on the protruding connecting plate.

[0009] Preferably, a guide rod is symmetrically fixedly provided at the lower end of the mounting movable plate, the guide rod is inserted in the plug-in guide hole, and a first connecting spring is sleeved on the guide rod, plug-in connecting holes are symmetrically opened on the mounting movable plate, the plug-in connecting holes pass through the guide rod, and a support strip is also fixedly provided on the mounting movable plate, a matching supporting rod is symmetrically fixedly provided on the upper end of the support strip, a connecting socket is symmetrically opened on the lower end, and a support platform is also fixedly provided on the support strip.

[0010] Preferably, a protruding supporting plate is fixedly provided on the support platform, guide grooves are symmetrically provided on the protruding supporting plate, and an elastic connecting piece is fixedly provided on the protruding supporting plate, an arc-surface clamping block is fixedly provided on the elastic connecting piece, guide strips are symmetrically fixedly provided on the arc-surface clamping block, and the guide strips are inserted in the guide grooves.

[0011] Preferably, the bearing matching plate is symmetrically mounted with driving links, a movable socket is provided on the driving links, a supporting matching rod is inserted into the movable socket, the driving links are hinged to the first matching hinge rod, and the driving links are connected to a connecting bar frame.

[0012] Preferably, a driving connecting strip is inserted in the connecting strip frame, and a hollow rod is fixedly provided on the connecting strip frame, the hollow rod is sleeved on the matching supporting rod, and a bearing plate is fixedly provided on the hollow rod, a plug-in supporting rod is fixedly provided on the bearing plate, and a push-down arc panel is fixedly provided at the lower end of the bearing plate.

[0013] Preferably, an installation plate is installed on the installation movable plate, and a supporting wing plate is symmetrically fixedly arranged on the upper end of the installation plate, and a fixed support plate is fixedly arranged on the support wing plate, a matching socket is provided on the fixed support plate, and a matching connecting hole is provided on the support wing plate, an installation channel is provided on the installation plate, a support platform is plugged into the installation channel, and limited position sockets are symmetrically provided on the installation plate, a supporting knife handle is fixedly arranged on the lower end of the installation plate, an auxiliary reinforcement sleeve is fixedly arranged on the supporting knife handle, and a knife head is fixedly arranged on the lower end of the supporting knife handle.

[0014] Preferably, a movable bending plate is symmetrically installed on the mounting plate, a connecting rod is fixedly provided on the upper end of the movable bending plate, the connecting rod is inserted in the mating socket, and a second connecting spring is sleeved on the connecting rod, a ramp mating block is fixedly provided on the lower end of the movable bending plate, a second mating hinge rod is hinged at the lower end of the ramp mating block, a movable locking plate is hinged at the lower end of the second mating hinge rod, a load-bearing guide rod is fixedly provided on the movable lock plate, the load-bearing guide rod is inserted in the limiting socket, and a first convex plate is fixedly provided on one side of the movable lock plate, an auxiliary plug-in plate is fixedly provided on the first convex plate, a second convex plate is fixedly provided on the other side of the movable lock plate, and an auxiliary plug-in rod is fixedly provided on the second convex plate.

[0015] A foil coil winding process comprises the following steps:

[0016] Step 1: Production of lead insulation: Cut the interlayer insulation DMD prepreg cloth to make the lead insulation. The length of each sheet is the same as the interlayer insulation, and the width is 1.2-1.5 times that of a single strip of foil. There are three sheets in each row, for a total of 6 sheets.

[0017] Step 2: Install the winding die: Install the winding die for winding the coil on the support frame, and wrap a piece of 0.075mm polyester film around the winding die, overlapping it by 100-200mm;

[0018] Step 3: Install the interlayer insulation DMD prepreg cloth: Install the interlayer insulation DMD prepreg cloth on the support frame, pull it out and put it in the mold in the previous step to wrap it for 1 circle and wait to be wound together with the foil;

[0019] Step 4: Processing of foil: Processing the foil into 90° cross-cut or 45° bevel cut;

[0020] Step 5: Lead wire reservation: reserve a certain length of foil at the beginning and end of the foil as the lead wire part of the subsequent winding. The reserved length is equal to the width of the foil plus the length of the lead wire extension;

[0021] Step 6: Foil strip bending: Divide the foil into strips according to the width of the copper bar, bend each strip 90°, and align them layer by layer, and smooth out the sanding burrs;

[0022] Step 7: Grinding and wrapping of foil leads: After the coil is wound, grind the foil leads as a whole to remove burrs at the corners, and then wrap an insulation layer of a certain thickness to the root as required. After all single foil leads are firmly tied, reserve installation holes at the wiring terminals and tin the wiring locations.

[0023] Compared with the prior art, the invention has the following advantages:

[0024] 1. A cutter head is provided at the lower end of the mounting plate. When installing the mounting plate, it is sleeved on the support table, and the mounting plate is positioned by the arc-surface block. At this time, the mounting plate is in an unlocked state. When shearing, the electric telescopic rod drives the mounting plate to move. Under the action of the limit matching plate, the mounting plate moves downward to reach the shearing height, which is convenient for shearing. As the mounting plate moves downward, the mounting plate can be automatically locked to ensure its stability during the working process. After the shearing is completed, the mounting plate is reset and it can be automatically unlocked to facilitate its installation and removal.

[0025] 2. The bearing matching plate drives the installation plate to move. As the installation movable plate moves downward, it will drive the driving connecting strip to move, and then drive the connecting strip to move under the action of the driving connecting strip, so that the plug-in supporting rod on the connecting strip will be plugged into the matching connecting hole, thereby realizing the first layer of fixed connection between the installation plate and the installation movable plate. As the connecting strip moves, the movable bending plate will be pushed downward under the action of the downward push arc panel, thereby making the connecting plug rod on the movable bending plate plugged into the plug-in connecting hole, thereby realizing the second layer of fixed connection between the installation movable plate and the installation plate.

[0026] 3. In addition, as the movable bending plate moves downward, it will drive the movable locking plate to move, so that the auxiliary plug-in plate on the movable locking plate is plugged into the auxiliary reinforcing sleeve on the knife handle, thereby enhancing the strength of the knife handle itself and ensuring its stability during the shearing process. At the same time, the auxiliary plug-in rod will also be plugged into the connecting socket to realize the third layer of fixed connection between the mounting plate and the mounting movable plate, fully ensuring the firmness of the installation of the mounting plate.

[0027] 4. The existing foil winding machine can meet the process requirements, no welding equipment is required, and the winding lead does not need to prefabricate the conductive bar in advance. It is simple to operate, the electrical connection is reliable, and it saves materials.

[0028] 5. No toxic or harmful gases are generated during the whole process, no welding or grinding is required, and insulation safety is improved.

[0029] 6. The eddy current loss generated by the winding leads can be reduced to a minimum without the risk of local overheating.

[0030] 7. The extended part of the winding lead is a soft connection. During the general assembly, there is a large margin of space outside the winding, and the electrical connection and fixation with the terminal can be flexibly carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A first-person perspective diagram of the support rack assembly.

[0032] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0033] Figure 3 A second perspective diagram of the support rack assembly.

[0034] Figure 4 This is a first-person perspective schematic diagram of the load-bearing mating plate assembly.

[0035] Figure 5 A second perspective diagram of the load-bearing mating plate assembly.

[0036] Figure 6 This is a first-person perspective schematic diagram of the assembly of the load-bearing matching plate and the mounting movable plate.

[0037] Figure 7 A schematic diagram from a second perspective of the assembly of the bearing matching plate and the mounting movable plate.

[0038] Figure 8 Exploded view of the assembly for installing the movable panel.

[0039] Fig. 9 A first-person perspective diagram of the installation panel assembly.

[0040] Fig.10 A second perspective diagram of the mounting plate assembly.

[0041] Fig.11 Schematic diagram of the 90° cross-cutting process of foil.

[0042] Fig.12 Schematic diagram of the 45° bevel cutting process for foil.

[0043] Fig.13 This is a schematic diagram of the lead head and tail coming out on the same side.

[0044] Fig.14 This is a schematic diagram of the upper and lower lead ends.

[0045] In the figure: 1, support frame; 11, support material plate; 12, shear groove; 13, through hole; 14, support carrier plate; 15, installation support plate; 16, electric telescopic rod; 17, limit matching plate; 18, oblique tilting part; 2, load-bearing matching plate; 21, support matching rod; 22, support bottom block; 23, plug-in guide hole; 3, installation movable plate; 31, support vertical rod; 32, installation frame; 33, rotating wheel; 34, protruding connecting plate; 35, first matching hinge rod; 36, guide plug rod; 361, first connecting spring; 37, plug-in connecting hole; 38, support strip plate; 381, matching support rod; 382, ​​connecting plug hole; 39, support platform; 391, protruding support plate; 3911, guide groove; 392, elastic connecting piece; 393, arc block; 394, guide strip; 4, driving connecting strip; 41, movable socket; 5, connecting strip frame; 51, hollow rod; 52, load-bearing plate; 53, plug-in supporting rod; 54, push-down arc panel; 6, installation plate; 61, support wing plate; 62, fixed supporting plate; 63, matching socket; 64, matching connecting hole; 65, installation channel; 66, limit socket; 67, support knife handle; 68, auxiliary reinforcement sleeve; 69, knife head; 7, movable bending plate; 71, connecting plug rod; 72, second connecting spring; 73, inclined matching block; 74, second matching hinge rod; 8, movable locking plate; 81, load-bearing guide rod; 82, first convex plate; 83, auxiliary plug-in plate; 84, second convex plate; 85, auxiliary plug-in rod. DETAILED DESCRIPTION

[0046] 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.

[0047] See also Figures 1 to 14 , the present invention provides a technical solution:

[0048] A transformer foil winding lead device comprises a support frame 1, on which a support material plate 11 is fixedly arranged, on which a shearing groove 12 is provided, and on one side of the support frame 1 above the support material plate 11 a through hole 13 is provided, on which support carrier plates 14 are symmetrically fixedly arranged at the upper and lower ends of the through hole 13, on which a mounting support plate 15 is fixedly arranged, on which an electric telescopic rod 16 is fixedly installed, on which a limited position matching plate 17 is fixedly arranged on the upper side of the support frame 1, on which an oblique tilting portion 18 is provided at one end of the limited position matching plate 17 close to the through hole 13, and on which a conveniently installed and detachable shearing knife mechanism is provided.

[0049] The convenient and detachable shearing knife mechanism includes a bearing matching plate 2, an installation movable plate 3, a first connecting spring 361, a driving connecting strip 4, a connecting strip frame 5, an installation plate 6, a movable bending plate 7, a second connecting spring 72 and a movable locking plate 8. The bearing matching plate 2 is fixedly installed on the electric telescopic rod 16, and the upper end of the bearing matching plate 2 is symmetrically fixed with a supporting matching rod 21, and the lower end of the bearing matching plate 2 is symmetrically fixed with a supporting bottom block 22, and the supporting bottom block 22 is provided with a plug-in guide hole 23.

[0050] A mounting movable plate 3 is installed on the bearing matching plate 2, a supporting upright pole 31 is fixedly provided on the mounting movable plate 3, a mounting frame 32 is fixedly provided on the supporting upright pole 31, a rotating wheel 33 is installed on the mounting frame 32, and a protruding connecting plate 34 is fixedly provided on the mounting frame 32, and a first matching hinge rod 35 is symmetrically hinged on the protruding connecting plate 34.

[0051] A guide rod 36 is symmetrically fixedly provided at the lower end of the mounting movable plate 3, the guide rod 36 is inserted in the insertion guide hole 23, and a first connecting spring 361 is sleeved on the guide rod 36, and plug-in connecting holes 37 are symmetrically opened on the mounting movable plate 3, the plug-in connecting holes 37 pass through the guide rod 36, and a support strip 38 is also fixedly provided on the mounting movable plate 3, a matching supporting rod 381 is symmetrically fixedly provided on the upper end of the support strip 38, and a connecting socket 382 is symmetrically opened at the lower end, and a support platform 39 is also fixedly provided on the support strip 38, in addition, the two ends of the first connecting spring 361 are respectively welded to the support bottom block 22 and the mounting movable plate 3.

[0052] A protruding supporting plate 391 is fixedly provided on the support platform 39, and a guide groove 3911 is symmetrically opened on the protruding supporting plate 391, and an elastic connecting piece 392 is fixedly provided on the protruding supporting plate 391, and an arc surface block 393 is fixedly provided on the elastic connecting piece 392, and a guide bar 394 is symmetrically fixedly provided on the arc surface block 393, and the guide bar 394 is inserted in the guide groove 3911.

[0053] The bearing matching plate 2 is symmetrically mounted with a driving link 4, which is provided with a movable socket 41, in which the supporting matching rod 21 is inserted, the driving link 4 is hinged to the first matching hinge rod 35, and the driving link 4 is connected to a connecting bar frame 5.

[0054] A driving connecting strip 4 is inserted in the connecting strip frame 5, and a hollow rod 51 is fixedly provided on the connecting strip frame 5, the hollow rod 51 is sleeved on the matching supporting rod 381, and a bearing plate 52 is fixedly provided on the hollow rod 51, an insert supporting rod 53 is fixedly provided on the bearing plate 52, and a push-down arc panel 54 is fixedly provided at the lower end of the bearing plate 52, and in addition, the inner wall of the connecting strip frame 5 is in contact with the driving connecting strip 4.

[0055] A mounting plate 6 is mounted on the mounting movable plate 3, a supporting wing plate 61 is symmetrically fixedly provided on the upper end of the mounting plate 6, a fixed support plate 62 is fixedly provided on the supporting wing plate 61, a matching plug hole 63 is provided on the fixed support plate 62, and a matching connecting hole 64 is provided on the supporting wing plate 61, a mounting channel 65 is provided on the mounting plate 6, a supporting platform 39 is inserted in the mounting channel 65, and a limited position plug hole 66 is symmetrically provided on the mounting plate 6, a supporting knife handle 67 is fixedly provided on the lower end of the mounting plate 6, an auxiliary reinforcement sleeve 68 is fixedly provided on the supporting knife handle 67, and a knife head 69 is fixedly provided on the lower end of the supporting knife handle 67, and the plug-in support rod 53 is inserted in the matching connecting hole 64 when it plays a fixing role on the mounting plate 6.

[0056] A movable bending plate 7 is symmetrically installed on the mounting plate 6, and a connecting rod 71 is fixedly provided on the upper end of the movable bending plate 7, and the connecting rod 71 is inserted in the matching socket 63, and a second connecting spring 72 is sleeved on the connecting rod 71, and the two ends of the second connecting spring 72 are respectively welded to the fixed supporting plate 62 and the movable bending plate 7, and a ramp matching block 73 is fixedly provided on the lower end of the movable bending plate 7, and a second matching hinge rod 74 is hinged at the lower end of the second matching hinge rod 74, and a movable locking plate 8 is hinged at the lower end of the second matching hinge rod 74, and a load-bearing guide rod 81 is fixedly provided on the movable locking plate 8, and the load-bearing guide rod 81 is inserted in the limiting socket 66, and a first convex plate 82 is fixedly provided on one side of the movable locking plate 8, and an auxiliary plug-in plate 83 is fixedly provided on the first convex plate 82, and a second convex plate 84 is fixedly provided on the other side of the movable locking plate 8, and an auxiliary plug-in rod 85 is fixedly provided on the second convex plate 84.

[0057] A transformer foil coil winding process comprises the following steps:

[0058] Step 1: Production of lead insulation: Cut the interlayer insulation DMD prepreg cloth to make the lead insulation. The length of each sheet is the same as the interlayer insulation, and the width is 1.2-1.5 times that of a single strip of foil. There are three sheets in each row, for a total of 6 sheets.

[0059] Step 2: Install the winding die: Install the winding die for winding the coil on the support frame 1, and wrap a 0.075mm polyester film around the winding die, overlapping it by 100-200mm;

[0060] Step 3: Install the interlayer insulating DMD prepreg cloth: Install the interlayer insulating DMD prepreg cloth on the support frame 1, pull it out and put it in the mold of the previous step to wrap it for 1 circle to be wound together with the foil;

[0061] Step 4: Processing of foil: Processing the foil into 90° cross-cut or 45° bevel cut;

[0062] Step 5: Lead wire reservation: reserve a certain length of foil at the beginning and end of the foil as the lead wire part of the subsequent winding. The reserved length is equal to the width of the foil plus the length of the lead wire extension;

[0063] Step 6: Foil strip bending: Divide the foil into strips according to the width of the copper bar, bend each strip 90°, and align them layer by layer, and smooth out the sanding burrs;

[0064] Step 7: Grinding and wrapping of foil leads: After the coil is wound, grind the foil leads as a whole to remove burrs at the corners, and then wrap an insulation layer of a certain thickness to the root as required. After all single foil leads are firmly tied, reserve installation holes at the wiring terminals and tin the wiring locations.

[0065] When the 90° cross-cutting process is used, waste in the shadow part will be generated, but the operation is simple and general foil winding machines can meet the requirements, such as Fig.11 As shown in the figure, when the 45° bevel cutting process is adopted, almost no waste is produced, and only the sharp corners of the foil strips need to be properly trimmed, such as Fig.12 shown.

[0066] Regardless of whether it is a 90° cross cut or a 45° bevel cut, a certain length of foil must be reserved at the beginning and end of the foil as the lead part of the subsequent winding. The reserved length is equal to the width of the foil plus the length of the lead extension.

[0067] The beginning and end of the foil need to be marked and cut first. Before winding, the reserved length of the beginning of the foil needs to be measured, and then it is divided into several equal parts along the width direction. The width of each equal part is approximately equal to the width of the conductive row. The marking must ensure the size is accurate and the root is vertical and flush. It is recommended to use special shearing tools for thicker and wider foils, and it is recommended to use scissors to cut thinner and narrower foils directly. After the foil is cut into single pieces, it is necessary to knock the edges and corners to remove obvious burrs, and then use sandpaper or professional tools to remove the burrs, and then use Use a right-angle plate to bend each foil 90° at the root of the drawn line from top to bottom. The bending line is required to be straight and without distortion, and aligned layer by layer to ensure that all bent single foils overlap with each other without misalignment and maintain 90° with the length direction of the foil. After fixing the starting lead on the winding mold, start winding. When the winding is completed, it is necessary to measure the reserved length of the tail of the foil, cut it after calculation and measurement, and process the tail lead in the same way as the above process.

[0068] When using the 90° cross-cutting process, after each foil is bent 90° and pressed together, the lead-out dimensions are measured and the excess foil of the lead needs to be cut off. Fig.11 The shaded part in the figure, when using the 45° bevel cutting process, the sharp corners of the lead foil need to be cut off as in the above operation. The 90° cross-cutting process is suitable for transformer winding lead wires with the head and tail leading out on the same side or with the upper and lower leading out arrangements, such as Fig.13 As shown, the 45° bevel cutting process is only applicable to the top and bottom lead arrangement of transformer winding leads, such as Fig.14 shown.

[0069] When installing the mounting plate 6, it is sleeved on the support platform 39 through the mounting channel 65. During the sleeve process, a certain force is used to push the mounting plate 6, so that the arc block 393 will move downward under the extrusion of the mounting plate 6 until the mounting plate 6 passes over the arc block 393, and then the arc block 393 moves upward under the action of the elastic connecting piece 392. When the mounting plate 6 is located, the mounting plate 6 is positioned. When disassembling the mounting plate 6, only a certain force is needed to pass the arc block 393 and quickly remove it. The electric telescopic rod 16 does not drive the mounting plate 6 to move. Before, the mounting plate 6 is in an unlocked state. When the shearing work is performed, the electric telescopic rod 16 is extended to drive the mounting plate 6 to move. During the movement of the mounting movable plate 3, the rotating wheel 33 contacts the oblique tilting portion 18, so that the mounting movable plate 3 is driven to move downward under the action of the oblique tilting portion 18, and the mounting plate 6 is driven to move downward at the same time, so that it reaches the shearing height, and then under the action of the cutter head 69, the shearing is performed as the mounting plate 6 moves. During the downward movement of the mounting movable plate 3, the driving link 4 is driven to move under the action of the first matching hinge rod 35, and then the driving link 4 is driven to move under the action of the first matching hinge rod 35, and then the driving link 4 is driven to move under the action of the first matching hinge rod 35. The movable link 4 will drive the connecting strip 5 to move. With the movement of the connecting strip 5, the plug-in support rod 53 will be plugged into the matching connection hole 64, so as to realize the first layer of fixed connection between the movable plate 3 and the installation plate 6. The movement of the connecting strip 5 will drive the downward push arc panel 54 to move synchronously. With the cooperation of the downward push arc panel 54 and the inclined matching block 73, the movable bending plate 7 will be pushed downward. In this way, the connecting plug rod 71 on the movable bending plate 7 will be plugged into the plug-in connection hole 37, so as to realize the second layer of fixed connection between the movable plate 3 and the installation plate 6. In addition, with the inclined matching block 7 3 moves downward, and under the action of the second matching hinge 74, the movable locking plate 8 is pushed to move, so that the auxiliary plug-in plate 83 on the movable locking plate 8 is plugged into the auxiliary reinforcing sleeve 68, and the strength of the supporting knife handle 67 itself is strengthened. At the same time, the auxiliary plug-in rod 85 is plugged into the limiting plug hole 66, so as to realize the third layer of fixed connection between the movable plate 3 and the mounting plate 6, fully ensuring the installation firmness of the mounting plate 6 while further ensuring the stability of the supporting knife handle 67. After the shearing is completed, the mounting plate 6 is reset to automatically unlock it, which is convenient for installation and replacement.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer foil winding lead device, comprising a support frame (1), characterized in that: A support material plate (11) is fixedly arranged on the support frame (1), a shearing groove (12) is provided on the support material plate (11), and a through hole (13) is provided on one side of the support frame (1) above the support material plate (11), support carrier plates (14) are symmetrically fixedly arranged on the support frame (1) at the upper and lower ends of the through hole (13), a mounting support plate (15) is fixedly arranged on the support carrier plate (14), and an electric telescopic rod (16) is fixedly installed on the mounting support plate (15), and the upper side of the support frame (1) is provided with a plurality of support plates (14) and a plurality of support plates (15) are fixedly arranged on the mounting support plate (15). A limited matching plate (17) is fixedly arranged, and an oblique tilting portion (18) is arranged on one end of the limited matching plate (17) close to the through hole (13). A conveniently installed and detachable shearing knife mechanism is arranged on the electric telescopic rod (16), and the conveniently installed and detachable shearing knife mechanism comprises a bearing matching plate (2), an installation movable plate (3), a first connecting spring (361), a driving connecting strip (4), a connecting strip frame (5), an installation plate (6), a movable bending plate (7), a second connecting spring (72) and a movable locking plate (8). (2) is fixedly mounted on the electric telescopic rod (16), and a supporting matching rod (21) is symmetrically fixedly arranged on the upper end of the bearing matching plate (2), and a supporting bottom block (22) is symmetrically fixedly arranged on the lower end of the bearing matching plate (2), and a plug-in guide hole (23) is opened on the supporting bottom block (22), and a mounting plate (6) is mounted on the mounting movable plate (3), and a supporting wing plate (61) is symmetrically fixedly arranged on the upper end of the mounting plate (6), and a fixed support plate (62) is fixedly arranged on the support wing plate (61), and the fixed support plate A matching socket (63) is provided on the mounting plate (62), and a matching connecting hole (64) is provided on the supporting wing plate (61), a mounting channel (65) is provided on the mounting plate (6), a supporting platform (39) is inserted into the mounting channel (65), and a limiting socket (66) is symmetrically provided on the mounting plate (6), a supporting knife handle (67) is fixedly provided at the lower end of the mounting plate (6), an auxiliary reinforcement sleeve (68) is fixedly provided on the supporting knife handle (67), and a knife head (69) is fixedly provided at the lower end of the supporting knife handle (67).

2. A transformer foil winding lead device according to claim 1, characterized in that: A mounting movable plate (3) is mounted on the bearing matching plate (2), a supporting upright pole (31) is fixedly mounted on the mounting movable plate (3), a mounting frame (32) is fixedly mounted on the supporting upright pole (31), a rotating wheel (33) is mounted on the mounting frame (32), and a protruding connecting plate (34) is fixedly mounted on the mounting frame (32), and a first matching hinge rod (35) is symmetrically hinged on the protruding connecting plate (34).

3. A transformer foil winding lead device according to claim 2, characterized in that: A guide plug rod (36) is symmetrically fixedly provided at the lower end of the mounting movable plate (3), the guide plug rod (36) is plugged into the plug guide hole (23), and a first connecting spring (361) is sleeved on the guide plug rod (36), and plug connection holes (37) are symmetrically provided on the mounting movable plate (3), the plug connection holes (37) are connected to the guide plug rod (36), and a support strip (38) is also fixedly provided on the mounting movable plate (3), a matching support rod (381) is symmetrically fixedly provided on the upper end of the support strip (38), and a connecting plug hole (382) is symmetrically provided on the lower end, and a support platform (39) is also fixedly provided on the support strip (38).

4. A transformer foil winding lead device according to claim 3, characterized in that: A protruding support plate (391) is fixedly provided on the support platform (39), a guide groove (3911) is symmetrically provided on the protruding support plate (391), and an elastic connecting piece (392) is fixedly provided on the protruding support plate (391), an arc surface clamping block (393) is fixedly provided on the elastic connecting piece (392), and a guide strip (394) is symmetrically fixedly provided on the arc surface clamping block (393), and the guide strip (394) is inserted into the guide groove (3911).

5. A transformer foil winding lead device according to claim 4, characterized in that: A driving link (4) is symmetrically mounted on the bearing matching plate (2), a movable plug hole (41) is provided on the driving link (4), a supporting matching rod (21) is inserted into the movable plug hole (41), the driving link (4) is hinged to the first matching hinge rod (35), and the driving link (4) is connected to a connecting bar frame (5).

6. A transformer foil winding lead device according to claim 5, characterized in that: The connecting strip frame (5) is plugged with a driving connecting strip (4), and a hollow rod (51) is fixedly provided on the connecting strip frame (5), the hollow rod (51) is sleeved on the matching supporting rod (381), and a bearing plate (52) is fixedly provided on the hollow rod (51), a plug-in supporting rod (53) is fixedly provided on the bearing plate (52), and a downward push arc panel (54) is fixedly provided at the lower end of the bearing plate (52).

7. A transformer foil winding lead device according to claim 6, characterized in that: A movable bending plate (7) is symmetrically mounted on the mounting plate (6); a connecting rod (71) is fixedly mounted on the upper end of the movable bending plate (7); the connecting rod (71) is inserted into the matching socket (63); a second connecting spring (72) is sleeved on the connecting rod (71); an inclined matching block (73) is fixedly mounted on the lower end of the movable bending plate (7); a second matching hinge rod (74) is hingedly mounted on the lower end of the inclined matching block (73); and the second matching hinge rod (74) is hingedly mounted on the lower end of the movable bending plate (7). 4), a movable locking plate (8) is hingedly connected at the lower end thereof, a bearing guide rod (81) is fixedly arranged on the movable locking plate (8), the bearing guide rod (81) is plugged into the limiting plug hole (66), a first convex plate (82) is fixedly arranged on one side of the movable locking plate (8), an auxiliary plug-in plate (83) is fixedly arranged on the first convex plate (82), a second convex plate (84) is fixedly arranged on the other side of the movable locking plate (8), and an auxiliary plug-in rod (85) is fixedly arranged on the second convex plate (84).

8. A transformer foil coil winding process, characterized in that: The winding process is applicable to the foil winding lead device according to any one of claims 1 to 7, and comprises the following steps: Step 1: Production of lead insulation: Cut the interlayer insulation DMD prepreg cloth to make the lead insulation. The length of each sheet is the same as the interlayer insulation, and the width is 1.2-1.5 times that of a single strip of foil. There are three sheets on the inside and outside, for a total of 6 sheets; Step 2: Install the winding die: Install the winding die for winding the coil on the support frame (1), and wrap a piece of 0.075 mm polyester film around the winding die, overlapping it by 100-200 mm; Step 3: Install the interlayer insulation DMD prepreg cloth: Install the interlayer insulation DMD prepreg cloth on the support frame (1), pull it out and put it in the mold in the previous step to wrap it for one circle and wait to be wound together with the foil; Step 4: Processing of foil: Processing the foil into 90° cross-cut or 45° bevel cut; Step 5: Lead wire reservation: reserve a certain length of foil at the beginning and end of the foil as the lead wire part of the subsequent winding. The reserved length is equal to the width of the foil plus the length of the lead wire extension; Step 6: Foil strip bending: Divide the foil into strips according to the width of the copper bar, bend each strip 90°, and align them layer by layer, and smooth out the sanding burrs; Step 7: Grinding and wrapping of foil leads: After the coil is wound, grind the foil leads as a whole to remove burrs at the corners, and then wrap an insulation layer of a certain thickness to the root as required. After all single foil leads are firmly tied, reserve installation holes at the wiring terminals and tin the wiring locations.

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