Wrapping system and wrapping process for transformer production line

Abstract

The application discloses a wrapping system of a transformer production line, which comprises a rotary clamp, a guide shaft, a cross-winding cylinder, a rubber belt clamp and an insulating rubber belt drawn from a rubber belt storage reel; the rotary clamp is fixed on a vertical rotating shaft; the rotary clamp can clamp and release a transformer; a sliding sleeve is sleeved on the guide shaft outside through a bearing rotating sleeve; the guide shaft is located on the side of the cross-winding cylinder far from the rotary clamp; coaxial upper and lower ring grooves are fixed on the cross-winding cylinder; a ring-shaped elastic capsule wall is coaxially arranged in the ring groove between the upper and lower ring grooves; a ring-shaped liquid capsule cavity filled with liquid is formed on the inner side of the ring-shaped elastic capsule wall; in the initial state, the rubber belt clamp is between the guide shaft and the cross-winding cylinder; the rubber belt drawn from the rubber belt storage reel horizontally passes the one side of the sliding sleeve outside the guide shaft, and the end of the insulating rubber belt is clamped by the rubber belt clamp, so that the reliability of the initial stage, the wrapping process and the end section can be improved.

Description

Technical Field

[0001] This invention belongs to the field of transformer manufacturing. Background Technology

[0002] In the process of wrapping insulating tape around transformer cores, achieving precise adhesion between the initial tape end and the core surface has long been a challenge. Conventional methods rely on fixed clamping blocks or mechanical fingers. However, due to dimensional tolerances in the core and slight deviations in clamping position, the initial bonding section often fails to adhere evenly, easily resulting in air bubbles, wrinkles, or misalignment, thus affecting the reliability of the initial end of the insulation layer.

[0003] Meanwhile, existing tape tension control in the wrapping process mostly uses friction discs, magnetic powder brakes, or spring-type passive adjustment, which cannot sense and adapt to the instantaneous tension changes caused by fluctuations in mechanical resistance. This results in uneven tape winding, with insufficient interlayer insulation strength in loose areas and excessive stretching or even breakage in tight areas.

[0004] The existing wrapping and finishing stage relies solely on the pressure-sensitive adhesiveness of the tape itself to complete the end fixation, lacking an active compaction process. This makes the finishing section prone to defects such as edge curling and local delamination, which can become the starting point for insulation failure during long-term transformer operation. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a winding system and winding process for a transformer production line, which can improve the reliability of the initial stage, the winding process and the final stage.

[0006] Technical Solution: To achieve the above objectives, the transformer production line winding system of the present invention includes a rotating clamp, a guide shaft, a cross-winding drum, a tape clamp, and insulating tape drawn from a tape storage reel. The rotating clamp is fixed on a vertical rotating shaft. The rotating clamp can clamp and release the transformer. A sliding sleeve is rotatably sleeved on the outside of the guide shaft via a bearing. The guide shaft is located on the side of the cross-winding drum away from the rotating clamp. An upper wheel ring and a lower wheel ring are coaxially fixed on the cross-winding drum. An annular elastic bladder wall is coaxially arranged in the annular groove between the upper wheel ring and the lower wheel ring, and an annular liquid bladder cavity filled with liquid is formed on the inner side of the annular elastic bladder wall. In the initial state, the tape clamp is between the guide shaft and the cross-winding drum. The non-adhesive side of the insulating tape drawn laterally from the tape storage reel first crosses the sliding sleeve side outside the guide shaft, and the end of the insulating tape is clamped by the tape clamp.

[0007] Furthermore, a hydraulic chamber is coaxially arranged inside the transverse winding cylinder; the hydraulic chamber is connected to the annular liquid bladder cavity through several connecting holes on the transverse winding cylinder; a rotary interface is provided at the lower end of the hydraulic chamber; it also includes a hydraulic delivery pipe; the end of the hydraulic delivery pipe is connected to the rotary interface through a rotary joint; the other end of the hydraulic delivery pipe is connected to the output end of the pressure control pump.

[0008] Furthermore, a solenoid valve is installed along the path of the hydraulic delivery pipe.

[0009] Furthermore, the lower end of the transverse winding cylinder is rotatably mounted on the fixed support arm via a bearing; the lower end of the guide shaft is fixed on the fixed support arm.

[0010] Furthermore, the upper end of the tape clamp is connected to the displacement arm; the displacement arm can move the tape clamp in the XYZ direction and rotate around the Z axis. A vertical cutting blade is provided on one side of the tape clamp, with a sharp end at the lower end. The telescopic device on one side of the displacement arm can drive the cutting blade to move up and down.

[0011] Furthermore, the vertical shaft is driven by a servo motor; it also includes a damping motor that applies reverse torque to the tape storage roll.

[0012] Furthermore, a pressure sensor is installed inside the hydraulic chamber; when the transformer is clamped by the rotating fixture:

[0013] When the pressure inside the hydraulic chamber is less than P1, the annular elastic bladder wall is in a state of relatively low outward expansion. When the pressure inside the hydraulic chamber is P1, the annular elastic bladder wall is in a state of relatively medium outward expansion. In this state, during the process of the vertical shaft rotating the transformer once, the outer circumference of the transformer core will never contact the annular elastic bladder wall in the state of relatively medium expansion. When the pressure inside the hydraulic chamber changes from P1 to P2, the annular elastic bladder wall is in a state of relatively high outward expansion. In this state, the outer diameter of the annular elastic bladder wall expands, and the outer circumference of the transformer core contacts and squeezes the annular elastic bladder wall in the state of relatively high expansion.

[0014] Furthermore, the winding process of the winding system in the transformer production line:

[0015] Step 1: In the initial state, before the rotating clamp has clamped the transformer, the non-adhesive side of the insulating tape extending laterally from the tape storage drum first crosses the sliding sleeve side of the guide shaft, and the end of the insulating tape is clamped by the tape clamp. At this time, the tape clamp is located between the guide shaft and the winding drum.

[0016] Step 2: The pressure control pump uses the hydraulic delivery pipe to make the pressure in the hydraulic chamber less than P1, so that the annular elastic bladder wall is in a relatively low outward bulging state. The displacement arm controls the horizontal displacement of the tape clamp, so that the tape clamp carries the unadhesive side of the end of the insulating tape around the annular elastic bladder wall and then bends vertically. The section of the unadhesive side of the end of the insulating tape that is bent vertically after around the annular elastic bladder wall is recorded as the tape initial bonding section.

[0017] Step 3: The robotic arm clamps the transformer onto a rotating fixture in a stationary state. At this point, the adhesive side of the tape at the beginning of the bonding section is parallel to and maintains a certain gap with the iron core of the transformer being clamped. Then, the pressure control pump raises the pressure in the hydraulic chamber to P1 through the hydraulic delivery pipe. The annular elastic bladder expands outward to a moderate bulging state. Under the expansion of the annular elastic bladder, the adhesive side of the tape at the beginning of the bonding section moves closer to the iron core. At the same time, the displacement arm adaptively shifts the tape clamp, so that the adhesive side of the tape at the beginning of the bonding section gradually approaches the iron core while maintaining parallelness, until the adhesive side of the tape at the beginning of the bonding section is adhered and stably bonded to the iron core.

[0018] Step four: The tape clamp releases the initial bonding section of the tape, and simultaneously, the displacement arm moves the released tape clamp upwards to avoid subsequent motion interference. At the same time, the solenoid valve of the hydraulic delivery pipe is closed. Then, the servo motor controls the winding drum, causing the clamped transformer to rotate continuously counterclockwise from a top-down perspective, gradually wrapping the insulating tape around the outer circumference of the iron core to form an insulating wrapping body. During the above process, the linear motion of the portion of the insulating tape crossing the annular elastic bladder wall, driven by friction, causes the annular elastic bladder wall and the winding drum to rotate. When the pressure of the portion of the insulating tape crossing the annular elastic bladder wall on the elastic bladder wall is too high, the pressure sensor inside the hydraulic chamber will sense a signal indicating a significantly increased pressure. If the insulation tape tension is too high, the controller adaptively reduces the reverse torque of the damping motor that applies reverse torque to the tape storage roll. When the pressure of the insulation tape across the annular elastic bladder wall is too low, the pressure sensor in the hydraulic chamber will sense a significantly reduced pressure signal, indicating that the insulation tape tension is too low. In this case, the controller adaptively increases the reverse torque of the damping motor that applies reverse torque to the tape storage roll, allowing the insulation tape to wrap around and adhere to the iron core more stably. After the clamped transformer has rotated N times from a top-down perspective, the rotation of the rotating clamp is paused. Then, the displacement arm moves the tape clamp to the position of the "initial state" and clamps the insulation tape at that position.

[0019] Step 5: Open the solenoid valve on the hydraulic delivery pipe. The pressure control pump raises the pressure in the hydraulic chamber to P2 through the hydraulic delivery pipe. The annular elastic bladder wall expands outward to a relatively high degree. In this state, the outer diameter of the annular elastic bladder wall expands. The outer circle of the annular elastic bladder wall in the relatively high-expansion state contacts and squeezes the insulating wrapping body on the outer circumference of the iron core. Then, the telescopic device on one side of the displacement arm drives the sharp end of the cutting blade downward to cut the tape clamp away from the guide shaft. After cutting, the side of the tape clamp away from the guide shaft forms a section of the insulating wrapping body that has not yet been bonded. Subsequently, the servo motor controls the winding drum to slowly rotate the clamped transformer counterclockwise from a top view. This allows the end section of the insulating wrapping body to be stably adhered to the insulating wrapping body under the rolling pressure of the annular elastic bladder wall in the relatively high-expansion state.

[0020] Beneficial effects: This invention utilizes a pressure-controlled pump and a solenoid valve to precisely change the intracavitary liquid pressure, achieving three bulging states of the bladder wall: low, medium, and high. It highly integrates three core functions: progressive bonding at the beginning, indirect dynamic feedback of tension during the process, and final rolling compaction.

[0021] The low bulging state provides a gap for the pre-winding of the tape to prevent accidental adhesion; the medium bulging state uses the flexible thrust generated by the uniform expansion of the capsule wall to drive the initial bonding section of the tape to adhere to the iron core surface in parallel without impact, avoiding local stress concentration or bonding air bubbles caused by traditional rigid compression; the high bulging state expands the outer diameter of the capsule wall after the wrapping is completed, and rolls the tail section with a set linear pressure to fully compact the adhesive layer and remove interface air, solving the problem of tail curling.

[0022] During the winding process, the solenoid valve closes, the hydraulic system switches to normally closed static pressure mode, and the pressure sensor captures the radial pressure change of the tape against the wall in real time. This signal directly reflects the instantaneous fluctuation of the tape tension. Based on this, the controller quickly adjusts the reverse torque of the unwinding damping motor, thus achieving stability throughout the transformer winding process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the overall state of the device in "Step One" and "Step Two" states;

[0024] Figure 2 This is a schematic diagram showing the overall state of the device in "Step One" and "Step Two" states;

[0025] Figure 3 This is a schematic diagram of a tape clamp structure;

[0026] Figure 4 This is a cross-sectional view of the winding cylinder. Detailed Implementation

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] like Figures 1 to 4 The transformer production line shown has a winding system in which the transformer 16 being wound includes an iron core 11 and a coil bobbin 15. The winding device includes a rotating clamp 12, a guide shaft 45, a winding drum 9, a tape clamp 4, and insulating tape 2 extended laterally from a tape storage drum. It also includes a damping motor that applies reverse torque to the tape storage drum. The rotating clamp 12 is fixedly mounted on a vertical rotating shaft 11, which is driven by a servo motor. The rotating clamp 12 can clamp and release the coil bobbin 15 at the lower end of the transformer 16.

[0029] The lower end of the traverse drum 9 is rotatably mounted on the fixed support arm 13 via bearing 32; the lower end of the guide shaft 45 is fixed on the fixed support arm 13, and a sliding sleeve 3 is rotatably sleeved on the outside of the guide shaft 45 via bearing; the guide shaft 45 is located on the side of the traverse drum 9 away from the rotating clamp 12; the combination of the guide shaft 45 and the sliding sleeve 3 ensures that the insulating tape 2 always receives uniform support during high-speed conveying, avoids tape tension fluctuations caused by sudden changes in sliding friction, and ensures the stability of the tape path.

[0030] The upper end of the tape clamp 4 is connected to the displacement arm 6; the displacement arm 6 can move the tape clamp 4 in the XYZ direction and rotate around the Z axis. A vertical cutting blade 17 is provided on one side of the tape clamp 4. The lower end of the cutting blade 17 is a sharp end 18. The telescopic device 7 on one side of the displacement arm 6 can drive the cutting blade 17 to move up and down.

[0031] An upper ring 1a and a lower ring 1b are coaxially fixed on the transverse winding cylinder 9; an annular elastic bladder wall 8 is coaxially arranged in the annular groove between the upper ring 1a and the lower ring 1b. The inner rings of the upper and lower ends of the annular elastic bladder wall 8 are fixedly and sealed to the outer wall of the transverse winding cylinder 9 by means of epoxy resin adhesive and pressing with the outer ring; an annular liquid bladder cavity 33 filled with liquid is formed on the inner side of the annular elastic bladder wall 8; the annular elastic bladder wall 8 is made of hydrogenated nitrile rubber with a hardness between 55A and 65A, and has strong oil resistance, resilience and fatigue life, and can maintain a stable elastic modulus in hundreds of thousands of repeated expansion and contraction cycles.

[0032] A hydraulic chamber 30 is coaxially arranged inside the lower part of the transverse winding cylinder 9; the hydraulic chamber 30 is connected to the annular liquid bladder cavity 33 through a number of connecting holes 19 on the transverse winding cylinder 9; the connecting holes 19 are evenly distributed along the circumference of the transverse winding cylinder 9.

[0033] A pressure sensor is installed inside the hydraulic chamber 30; the pressure sensor is used to detect the pressure change of the liquid in the annular liquid bladder 33 in real time and feed the pressure signal back to the controller to indirectly monitor the radial pressure applied by the insulating tape 2 to the annular elastic bladder wall 8.

[0034] The lower end of the hydraulic chamber 30 is provided with a rotary interface 31; it also includes a hydraulic delivery pipe 10; the end of the hydraulic delivery pipe 10 is connected to the rotary interface 31 through a rotary joint; the other end of the hydraulic delivery pipe 10 is connected to the output end of the pressure control pump; a solenoid valve is provided along the path of the hydraulic delivery pipe 10; the rotary joint keeps the hydraulic delivery pipe 10 stationary and does not twist when it rotates across the winding cylinder 9 due to the friction of the belt, thus realizing reliable transmission of hydraulic medium between the dynamic and static interfaces.

[0035] With the rotating clamp 12 holding the transformer 16 in place:

[0036] When the pressure inside the hydraulic chamber 30 is less than P1, the annular elastic bladder wall 8 is in a state of relatively low outward bulging.

[0037] When the pressure inside the hydraulic chamber 30 is P1, the annular elastic bladder wall 8 is in a state of relatively moderate outward expansion. In this state, during the process of the vertical rotating shaft 11 rotating the transformer 16 once, the outer circumferential surface of the iron core 11 of the transformer 16 will never contact the annular elastic bladder wall 8 in the state of relatively moderate expansion. The minimum gap of the above-mentioned "never contacting" is set to 3mm to 4mm, which ensures that the iron core 11 can safely avoid and the deformation error rate, and also ensures that the displacement required for the initial bonding section 2a of the tape to be pressed against the iron core 11 is not too large.

[0038] When the pressure inside the hydraulic chamber 30 changes from P1 to P2, the annular elastic bladder wall 8 is in a relatively high degree of outward expansion state. In this state, the outer diameter of the annular elastic bladder wall 8 expands, and the outer peripheral surface of the iron core 11 of the transformer 16 contacts and squeezes the annular elastic bladder wall 8 in a relatively high degree of expansion state. The pressure value of P2 makes the outer diameter expansion of the annular elastic bladder wall 8 sufficient to exceed the thickness of the insulating wrapping body 2b of the iron core 11, and rolls the tail section with a controllable radial force to fully compact the tail section of the wrapping body.

[0039] Work methods:

[0040] Step 1: In the initial state, before the rotating clamp 12 clamps the transformer 16, the non-adhesive side of the insulating tape 2, which is laterally extended from the tape storage reel, first crosses the sliding sleeve 3 outside the guide shaft 45, and the end of the insulating tape 2 is clamped by the tape clamp 4. At this time, the tape clamp 4 is located between the guide shaft 45 and the winding drum 9. Figure 1 shown above.

[0041] Step two: The pressure control pump, through the hydraulic delivery pipe 10, makes the pressure inside the hydraulic chamber 30 less than P1, causing the annular elastic bladder wall 8 to be in a relatively low outward bulging state. The displacement arm 6 controls the horizontal displacement of the tape clamp 4, causing the tape clamp 4 to bend vertically after the adhesive-free side of the end of the insulating tape 2 passes over the annular elastic bladder wall 8. This vertically bent section after the adhesive-free side of the end of the insulating tape 2 passes over the annular elastic bladder wall 8 is recorded as the tape initial bonding section 2a; (The text abruptly ends here, so the translation stops as well.) Figure 1 As shown in the image below.

[0042] Step 3: The robotic arm clamps the transformer 16 onto the rotating fixture 12 in a stationary state. At this time, the adhesive side of the tape's initial bonding section 2a is parallel to the iron core 11 of the transformer 16 being clamped and maintains a certain gap. The reason for maintaining a certain gap is to avoid incorrect adhesion between the tape and the tape's initial bonding section 2a during the clamping process.

[0043] Then, the pressure control pump raises the pressure in the hydraulic chamber 30 to P1 through the hydraulic delivery pipe 10. The annular elastic bladder wall 8 expands outward to a moderately bulging state. Under the influence of the expansion of the annular elastic bladder wall 8, the adhesive side of the tape's initial bonding section 2a moves closer to one side of the iron core 11. At the same time, the displacement arm 6 adaptively shifts the tape clamp 4, keeping the adhesive side of the tape's initial bonding section 2a parallel, and gradually moves closer to one side of the iron core 11 until the adhesive side of the tape's initial bonding section 2a is adhered and stably bonded to one side of the iron core 11. Figure 2 As shown in the figure above, the process of increasing the pressure from less than P1 to P1 is achieved by a pressure control pump in a pressurization mode, with the pressurization rate controlled between 0.1MPa / s and 0.5MPa / s, so that the bladder wall bulges smoothly. The initial bonding section 2a of the tape is gently bonded in a controlled manner to avoid instantaneous impact that could cause bonding bubbles or positional displacement.

[0044] Step four: The tape clamp 4 releases the initial bonding section 2a of the tape, and at the same time, the displacement arm 6 moves the tape clamp 4 upward in the released state to avoid subsequent motion interference; at the same time, the solenoid valve of the hydraulic delivery pipe 10 is closed; after the solenoid valve is closed, the hydraulic chamber 30 and the annular liquid bladder 33 form a closed constant volume static pressure system. In this state, the degree of expansion of the annular elastic bladder wall 8 is locked, forming an elastic support arc surface with a fixed curvature, providing a stable pressure reference for subsequent wrapping tension monitoring.

[0045] Then, the servo motor controls the winding cylinder 9 to make the clamped transformer 16 rotate counterclockwise continuously from a top view, so that the insulating tape 2 gradually wraps around the outer periphery of the iron core 11 to form an insulating wrapping body 2b wrapped around the outer periphery of the iron core 11; during the above process, the linear movement of the portion of the insulating tape 2 that passes over the annular elastic bladder wall 8 is driven by friction to make the annular elastic bladder wall 8 and the winding cylinder 9 rotate; the rotation of the winding cylinder 9 converts the sliding friction between the tape and the bladder wall into the rolling friction of the winding cylinder 9 around the bearing 32.

[0046] When the pressure of the portion of the insulating tape 2 that crosses the annular elastic bladder 8 on the elastic bladder 8 is too high, the pressure sensor in the hydraulic chamber 30 will sense a signal of significantly increased pressure, indicating that the tension of the insulating tape 2 is too high. At this time, the controller adaptively reduces the reverse torque of the damping motor that applies reverse torque to the tape storage roll, ensuring that the detection of tension fluctuation and the torque adjustment of the damping motor are almost synchronized in real time, and controlling the tension fluctuation of the tape within ±5% of the set value.

[0047] When the pressure of the portion of the insulating tape 2 that crosses the annular elastic bladder wall 8 on the elastic bladder wall 8 is too small, the pressure sensor in the hydraulic chamber 30 will sense a signal that the pressure has decreased significantly, indicating that the tension of the insulating tape 2 is too small. At this time, the controller adaptively increases the reverse torque of the damping motor that applies reverse torque to the tape storage roll, so that the insulating tape 2 can wrap around and adhere to the iron core 11 more stably.

[0048] After the clamped transformer 16 has rotated N revolutions from a top-down perspective, the rotation of the rotating clamp 12 is paused. Then, the displacement arm 6, carrying the tape clamp 4, moves to the position of the "initial state" and clamps the insulating tape 2 at that position; as shown... Figure 2 As shown in the image below.

[0049] Step 5: Open the solenoid valve on the hydraulic delivery pipe 10. The pressure control pump raises the pressure in the hydraulic chamber 30 to P2 through the hydraulic delivery pipe 10. The annular elastic bladder wall 8 expands outward to a relatively high degree. In this state, the outer diameter of the annular elastic bladder wall 8 expands. The outer ring of the annular elastic bladder wall 8 in the relatively high-degree expansion state contacts and squeezes the insulating wrapping body 2b on the outer circumference of the iron core 11. The radial expansion increment of the annular elastic bladder wall 8 under the pressure of P2 ensures that its outer ring produces a uniform line contact rolling effect on the end section 2d of the insulating wrapping body, fully compacting the adhesive layer and driving away interface bubbles.

[0050] Subsequently, the telescopic device 7 on one side of the displacement arm 6 drives the sharp end 18 of the cutting blade 17 downward to cut the side of the tape clamp 4 away from the guide shaft 45. After cutting, a section of the insulation wrapping body tail segment 2d that has not yet been bonded is formed on the side of the tape clamp 4 away from the guide shaft 45. Then, the servo motor controls the winding cylinder 9 to slowly rotate the clamped transformer 16 counterclockwise from a top-down perspective, so that the insulation wrapping body tail segment 2d is stably adhered to the insulation wrapping body 2b under the rolling pressure of the annular elastic bladder wall 8 in a relatively highly bulging state, avoiding the problem of weak adhesion of the tail part. This completes a complete wrapping process. Throughout the wrapping process, the pressure sensor continuously monitors the pressure in the hydraulic chamber 30, and the controller compares the current pressure with the preset P1 and P2 thresholds in real time. Any abnormal pressure deviation will trigger an alarm or shutdown to prevent wrapping failure due to bladder wall damage or pipeline leakage.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A winding system for a transformer production line, characterized in that: Includes a rotary clamp (12), a guide shaft (45), a cross-winding drum (9), a tape clamp (4), and insulating tape (2) drawn from a tape storage drum; the rotary clamp (12) is fixed on a vertical rotating shaft (11); the rotary clamp (12) can clamp and release the transformer (16); A sliding sleeve (3) is rotatably sleeved on the outside of the guide shaft (45) via a bearing; the guide shaft (45) is located on the side of the cross-winding cylinder (9) away from the rotating clamp (12); an upper wheel ring (1a) and a lower wheel ring (1b) are coaxially fixed on the cross-winding cylinder (9); an annular elastic bladder wall (8) is coaxially arranged in the annular groove between the upper wheel ring (1a) and the lower wheel ring (1b), and an annular liquid bladder cavity (33) filled with liquid is formed on the inner side of the annular elastic bladder wall (8). In the initial state, the tape clamp (4) is between the guide shaft (45) and the cross-winding drum (9). The non-adhesive side of the insulating tape (2) that is laterally led out from the tape storage drum first crosses the side of the sliding sleeve (3) outside the guide shaft (45), and the end of the insulating tape (2) is clamped by the tape clamp (4).

2. The winding system of the transformer production line according to claim 1, characterized in that: A hydraulic chamber (30) is coaxially arranged inside the transverse winding cylinder (9); the hydraulic chamber (30) is connected to the annular liquid bladder cavity (33) through several connecting holes (19) on the transverse winding cylinder (9); a rotating interface (31) is provided at the lower end of the hydraulic chamber (30); a hydraulic delivery pipe (10) is also included; the end of the hydraulic delivery pipe (10) is connected to the rotating interface (31) through a rotating joint; the other end of the hydraulic delivery pipe (10) is connected to the output end of the pressure control pump.

3. The winding system for a transformer production line according to claim 2, characterized in that: A solenoid valve is installed along the path of the hydraulic delivery pipe (10).

4. The winding system for a transformer production line according to claim 3, characterized in that: The lower end of the cross-winding cylinder (9) is rotatably mounted on the fixed support arm (13) via a bearing (32); the lower end of the guide shaft (45) is fixed on the fixed support arm (13).

5. The winding system for a transformer production line according to claim 3, characterized in that: The upper end of the tape clamp (4) is connected to the displacement arm (6); the displacement arm (6) can move the tape clamp (4) in the XYZ direction and rotate around the Z axis. A vertical cutting blade (17) is provided on one side of the tape clamp (4). The lower end of the cutting blade (17) is a sharp end (18). The telescopic device (7) on one side of the displacement arm (6) can drive the cutting blade (17) to move up and down.

6. The winding system for a transformer production line according to claim 5, characterized in that: The vertical shaft (11) is driven by a servo motor; it also includes a damping motor that applies reverse torque to the tape storage roll.

7. The winding system for a transformer production line according to claim 6, characterized in that: A pressure sensor is installed inside the hydraulic chamber (30); with the rotating clamp (12) holding the transformer (16): When the pressure inside the hydraulic chamber (30) is less than P1, the annular elastic bladder wall (8) is in a state of relatively low outward bulging. When the pressure inside the hydraulic chamber (30) is P1, the annular elastic bladder wall (8) is in a state of relatively moderate outward expansion. In this state, during the process of the vertical shaft (11) rotating the transformer (16) once, the outer circumference of the iron core (11) of the transformer (16) will never contact the annular elastic bladder wall (8) in a state of relatively moderate expansion. When the pressure inside the hydraulic chamber (30) changes from P1 to P2, the annular elastic bladder wall (8) is in a state of relatively high outward expansion. In this state, the outer diameter of the annular elastic bladder wall (8) expands, and the outer peripheral surface of the core (11) of the transformer (16) contacts and squeezes the annular elastic bladder wall (8) in a relatively high-expansion state.

8. The winding process of the winding system of the transformer production line according to claim 7, characterized in that: Step 1: In the initial state, before the rotating clamp (12) clamps the transformer (16), the non-adhesive side of the insulating tape (2) that is horizontally led out from the tape storage drum first crosses the sliding sleeve (3) side of the guide shaft (45), and the end of the insulating tape (2) is clamped by the tape clamp (4). At this time, the tape clamp (4) is located between the guide shaft (45) and the winding drum (9). Step 2: The pressure control pump makes the pressure in the hydraulic chamber (30) less than P1 through the hydraulic delivery pipe (10), so that the annular elastic bladder wall (8) is in a relatively low degree of outward expansion. The horizontal displacement of the tape clamp (4) is controlled by the displacement arm (6), so that the tape clamp (4) carries the adhesive-free side of the end of the insulating tape (2) around the annular elastic bladder wall (8) and then bends vertically. The section of the adhesive-free side of the end of the insulating tape (2) that is bent vertically after around the annular elastic bladder wall (8) is recorded as the tape initial bonding section (2a). Step 3: The robot clamps the transformer (16) onto the rotating clamp (12) in a stationary state. At this time, the adhesive side of the tape starting bonding section (2a) is parallel to the iron core (11) side of the clamped transformer (16) and maintains a certain gap. Then, the pressure control pump raises the pressure in the hydraulic chamber (30) to P1 through the hydraulic delivery pipe (10). The annular elastic bladder wall (8) expands outward to a moderately bulging state. Under the expansion of the annular elastic bladder wall (8), the adhesive side of the tape's initial bonding section (2a) moves closer to the side of the iron core (11). At the same time, the displacement arm (6) adaptively shifts the tape clamp (4) so ​​that the adhesive side of the tape's initial bonding section (2a) gradually approaches the side of the iron core (11) while keeping it parallel, until the adhesive side of the tape's initial bonding section (2a) is attached and stably bonded to the side of the iron core (11).

9. The winding process of the winding system of the transformer production line according to claim 8, characterized in that: Step four, the tape clamp (4) releases the initial bonding section (2a) of the tape, and at the same time, the displacement arm (6) moves the tape clamp (4) upward in the released state to avoid subsequent motion interference; at the same time, the solenoid valve of the hydraulic delivery pipe (10) is closed; then, the servo motor controls the winding cylinder (9) to make the clamped transformer (16) rotate counterclockwise continuously from the top view, so that the insulating tape (2) gradually wraps around the outer periphery of the iron core (11) to form an insulating wrapping body (2b) wrapped around the outer periphery of the iron core (11); during the above process, the linear motion of the part of the insulating tape (2) that crosses the annular elastic bladder wall (8) is driven by friction to make the annular elastic bladder wall (8) and the winding cylinder (9) rotate; When the pressure of the insulating tape (2) across the annular elastic bladder wall (8) on the elastic bladder wall (8) is too high, the pressure sensor in the hydraulic chamber (30) will sense a signal that the pressure has increased significantly, indicating that the tension of the insulating tape (2) is too high. At this time, the controller will adaptively reduce the reverse torque of the damping motor that applies reverse torque to the tape storage roll. When the pressure of the insulating tape (2) across the annular elastic bladder wall (8) on the elastic bladder wall (8) is too small, the pressure sensor in the hydraulic chamber (30) will sense a signal that the pressure has decreased significantly, indicating that the tension of the insulating tape (2) is too small. At this time, the controller adaptively increases the reverse torque of the damping motor that applies reverse torque to the tape storage roll, so that the insulating tape (2) can wrap around and adhere to the iron core (11) more stably. After the clamped transformer (16) rotates continuously for N revolutions from a top-down perspective, the rotation of the rotating clamp (12) is paused. Then, the displacement arm (6) moves with the tape clamp (4) to the position of the "initial state" and clamps the insulating tape (2) at that position.

10. The winding process of the winding system of the transformer production line according to claim 9, characterized in that: Step 5: Open the solenoid valve on the hydraulic delivery pipe (10). The pressure control pump raises the pressure in the hydraulic chamber (30) to P2 through the hydraulic delivery pipe (10). The annular elastic bladder wall (8) expands outward to a relatively high degree. In this state, the outer diameter of the annular elastic bladder wall (8) expands. The outer ring of the annular elastic bladder wall (8) in the relatively high degree of expansion state contacts and squeezes the insulating wrapping body (2b) on the outer circumference of the iron core (11). Subsequently, the telescopic device (7) on one side of the displacement arm (6) drives the sharp end (18) of the lower end of the cutting blade (17) downward to cut the side of the tape clamp (4) away from the guide shaft (45). After cutting, the side of the tape clamp (4) away from the guide shaft (45) forms a section of the insulation wrapping body tail section (2d) that has not yet been bonded. Then, the servo motor controls the cross-winding cylinder (9) to make the clamped transformer (16) slowly rotate counterclockwise from the top view, so that the insulation wrapping body tail section (2d) is stably adhered to the insulation wrapping body (2b) under the rolling pressure of the annular elastic bladder wall (8) in a relatively high degree of bulging state.

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