Transformer gum copper foil, copper foil attaching process and copper foil attaching device thereof

Abstract

The invention discloses a transformer gum copper foil, which comprises a single-sided adhesive tape and a rectangular copper foil, the back surface of the rectangular copper foil is centrally attached to the adhesive surface of the single-sided adhesive tape in the unfolded state along the length direction, and the single-sided adhesive tape in the unfolded state is adhered to the edge of the front surface of the rectangular copper foil after being folded along the four contour lines of the rectangular copper foil, so as to form a folded adhesive tape which half wraps the rectangular copper foil; a section of strip-shaped copper foil exposed part is formed in the middle position of the front surface of the rectangular copper foil; the structural form of the folding adhesive tape half-wrapped with the rectangular copper foil is more stable than traditional common parallel attachment, the edge of the copper foil is completely wrapped, and the tearing resistance of the edge of the copper foil is effectively improved.

Description

Technical Field

[0001] The invention belongs to the field of transformer copper foil adhesive. Background Art

[0002] Transformer adhesive copper foil is a composite material made by pasting copper foil and insulating tape together. It is wrapped around the outside of the transformer coil. During the operation of the transformer, the copper foil can effectively absorb high-frequency electromagnetic interference, reduce the radiation range and interference intensity of electromagnetic waves, and thus ensure the normal operation of the transformer. The adhesive copper foil can help to conduct the heat generated by the transformer outward, thereby reducing the temperature rise of the transformer and further protecting the operation of the transformer. The presence of adhesive on the copper foil can enhance the structural strength of the copper foil, thereby resisting external impact and vibration. Transformer adhesive copper foil is widely used in various transformer products, especially in the fields of high-frequency transformers, power transformers, etc.

[0003] The existing adhesive-backed copper foil is generally attached parallel to the tape, and the edge contours of the attached copper foil cannot completely overlap, so the edge of the attached copper foil is still prone to tearing.

[0004] When making the transformer backing copper foil, the most critical process is how to attach the rectangular copper foil to the adhesive surface of the single-sided tape in the center along the length direction. Since both the copper foil and the tape are flexible, if the copper foil is twisted during the fully automatic attachment process, it is easy to cause attachment failure. Summary of the invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a transformer adhesive copper foil, a copper foil attaching process and a copper foil attaching device, which can improve the edge tear resistance of the copper foil adhesive.

[0006] Technical solution: To achieve the above-mentioned purpose, the transformer back-adhesive copper foil of the present invention comprises a single-sided tape and a rectangular copper foil; the back side of the rectangular copper foil is attached to the adhesive side of the single-sided tape in the unfolded state in the center along the length direction, and the single-sided tape in the unfolded state is folded along the four contour lines of the rectangular copper foil and adhered to the front edge of the rectangular copper foil to form a folded tape that half wraps the rectangular copper foil, and a strip-shaped copper foil exposed portion is formed in the center of the front side of the rectangular copper foil.

[0007] Furthermore, a grounding wire is welded to a portion of the exposed portion of the copper foil.

[0008] The copper foil attaching device of the transformer back adhesive copper foil comprises a tape lead-out section led out from a tape storage roll and extending obliquely upward, a copper foil tape lead-out section led out from a copper foil storage roll and extending horizontally, and a horizontal straight tape conveying platform; the extension direction of the copper foil tape lead-out section is parallel to the straight tape conveying platform; a tape roller is rotatably arranged at the conveying starting end of the straight tape conveying platform; after the tape lead-out section crosses the tape roller, it is parallel to the conveying surface of the straight tape conveying platform, and the adhesive surface faces upward; the tape parallel to the conveying surface of the straight tape conveying platform is recorded as the horizontal tape conveying section; a tape pulling device is provided at one end of the horizontal tape conveying section away from the tape roller, and under the pulling of the tape pulling device, the horizontal tape conveying section moves linearly along the conveying direction of the straight tape conveying platform.

[0009] Furthermore, a fixed clamping seat is arranged in front of the conveying starting end of the linear tape conveying platform, and a lifting clamp is arranged above the clamping seat, and the clamp lifting device can drive the lifting clamp to do lifting and lowering movements; a clamping gap is formed between the lifting clamp and the clamping seat, and in the initial state, the end of the copper foil lead-out section passes through the clamping gap and is clamped by the clamping gap; the portion of the end of the copper foil lead-out section that has passed through the clamping gap is recorded as the portion of the copper foil end to be clamped;

[0010] A translation clamp is arranged above the linear tape conveying platform, and the translation arm can drive the translation clamp to translate along the length direction of the linear tape conveying platform; the clamping part of the translation clamp is at the same height as the copper foil lead-out section; the translation arm can drive the translation clamp to translate to the end of the copper foil lead-out section to clamp the copper foil.

[0011] Furthermore, a lifting platform is arranged parallel to and directly above the horizontal conveying section of the tape, and the lifting platform is installed on a lifting arm that can perform lifting movements; at least one pair of negative pressure adsorption heads with suction ports facing downwards are fixedly installed on the lower front end of the lifting platform, and a downwards laser distance sensor is fixedly installed on the front side of the negative pressure adsorption head on the lifting platform.

[0012] Furthermore, a rolling wheel is arranged on the side of the translation clamp away from the lifting clamp, and the rolling wheel is rotatably mounted on a lifting rolling wheel bracket, and the rolling wheel bracket can drive the rolling wheel surface of the rolling wheel to descend to be tangent to the horizontal transmission section of the belt.

[0013] Furthermore, a copper foil cutting device capable of cutting the copper foil tape is arranged on one side of the lifting clamp close to the linear tape conveying platform.

[0014] Optionally, the copper foil cutting device comprises a vertical cutter which can be raised and lowered and has a sharp end.

[0015] Optionally, the copper foil cutting device includes a disc-shaped rotating knife seat, the axis of which is horizontal and perpendicular to the extension direction of the linear tape conveying platform; a cutter is integrally arranged on the upper part of the outer peripheral wall of the disc-shaped rotating knife seat and on one side close to the clamping quick lifter along the tangential direction, and the lower oblique end of the cutter is a sharp end; it also includes a knife seat drive motor that can drive the disc-shaped rotating knife seat to rotate along the axis, and the knife seat drive motor is installed on a lifting arm that can perform lifting and lowering movements; a hollow negative pressure bin is arranged inside the disc-shaped rotating knife seat, and a negative pressure vacuum pump is fixedly installed on one side of the disc-shaped rotating knife seat, and the vacuum end of the negative pressure vacuum pump is connected to the hollow negative pressure bin inside the disc-shaped rotating knife seat, and a plurality of negative pressure adsorption holes connected to the hollow negative pressure bin are evenly hollowed out on the lower part of the outer peripheral arc surface of the disc-shaped rotating knife seat.

[0016] Furthermore, the attaching process of the copper foil attaching device of the transformer adhesive-backed copper foil is characterized in that:

[0017] Step 1, initial state;

[0018] Step 2: The translation clamp is translated to the end of the copper foil tape to be clamped at the lead-out section of the copper foil tape, and then the clamping state of the clamping seam is released; then the translation clamp is driven to translate so that a section of the copper foil tape between the translation clamp and the clamping seam gradually becomes longer, and the section of the copper foil tape between the translation clamp and the clamping seam is recorded as the section of the copper foil tape to be sheared; at this time, the section of the copper foil tape to be sheared is below the negative pressure adsorption head and the laser distance sensor;

[0019] Step 3: The laser distance sensor detects the distance of the object directly below. By detecting the distance, it is determined whether a section of copper foil to be cut has been generated after the completion of "Step 2". If it is determined that a section of copper foil to be cut has been generated, the next step of cutting and attaching process is executed.

[0020] Beneficial effect: The structural form of the folded tape of the semi-wrapped rectangular copper foil of the present invention is more stable than the conventional ordinary parallel attachment, and the edge of the copper foil is completely wrapped, which effectively improves the tear resistance of the edge of the copper foil.

[0021] The present scheme also provides a process system and process that can attach a plurality of rectangular copper foils in an array equidistant along the length direction to the adhesive surface of a long single-sided tape in the center; in the second embodiment, it also solves the problem that the copper foil is easily twisted and torsioned under the action of ambient airflow and wind force, resulting in attachment failure, during the process in which the lower surface of the rectangular copper foil strip descends to the horizontal conveying section of the locally adhered tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the transformer adhesive copper foil structure and the S1 process diagram of this solution;

[0023] Figure 2 Schematic diagram of the s2 and s3 processes;

[0024] Figure 3 The overall structure of the attaching device and the schematic diagram of three states, the "copper foil cutting device" in this figure is the "first embodiment";

[0025] Figure 4 The "copper foil cutting device" is a schematic diagram of the overall two states of the "second embodiment";

[0026] Figure 5 The "copper foil cutting device" is a structural schematic diagram of the "second embodiment";

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of a disc-type rotating tool holder. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] As attached Figures 1 to 6 The transformer backing copper foil shown is Figure 1 , including a single-sided tape 9c and a rectangular copper foil 1, wherein the unfolded area of ​​the single-sided tape 9c is larger than the surface area of ​​the rectangular copper foil 1; the reverse side of the rectangular copper foil 1 is attached to the adhesive surface of the unfolded single-sided tape 9c in the center along the length direction, and the unfolded single-sided tape 9c is folded along the four contour lines of the rectangular copper foil 1 and attached to the front edge of the rectangular copper foil 1, forming a folded tape 9e that half-wraps the rectangular copper foil 1, and a strip-shaped copper foil exposed portion 1a is formed in the center of the front side of the rectangular copper foil 1; the structural form of the folded tape 9e that half-wraps the rectangular copper foil 1 is more stable than the traditional ordinary parallel attachment, and the edge of the copper foil is completely wrapped, which effectively improves the anti-tearing edge capability of the copper foil.

[0030] A grounding wire 34 is welded to a part 35 of the exposed copper foil portion 1a. The induced current generated by the transformer pattern will form a loop on the copper foil. The existence of this current will cause voltage drop and current imbalance. The adhesive-backed copper foil can reduce the impact of this induced current through the grounding effect, thereby ensuring the safe operation of the transformer.

[0031] The overall manufacturing process of the transformer backing copper foil of this scheme is as follows: Figure 1 and 2 :

[0032] s1, attaching a plurality of rectangular copper foils 1 in an array equidistantly along the length direction to the adhesive surface of the long single-sided adhesive tape 9b;

[0033] s2, cutting off the long strip of single-sided tape 9b between any two adjacent rectangular copper foils 1, thereby forming a plurality of unfolded single-sided tapes 9c, each of which has a rectangular copper foil 1 attached to the center;

[0034] s3, fold the unfolded single-sided tape 9c along the four contour lines of the rectangular copper foil 1 and adhere it to the front edge of the rectangular copper foil 1 to form a folded tape 9e that half wraps the rectangular copper foil 1, and form a strip-shaped copper foil exposed portion 1a at the center of the front of the rectangular copper foil 1; finally, weld a grounding wire 34 to a part 35 of the copper foil exposed portion 1a.

[0035] This solution is a process system designed for the process of s1 above. Figures 3 to 6 The specific contents are as follows:

[0036] The copper foil attaching device of the transformer backing copper foil comprises a tape lead-out section 9a led out from a tape storage roll and extending obliquely upward, a copper foil tape lead-out section 13 led out from a copper foil storage roll and extending horizontally, and a horizontal straight tape conveying platform 19; the extension direction of the copper foil tape lead-out section 13 is parallel to the straight tape conveying platform 19; when the tape lead-out section 9a is subjected to tension, the tape storage roll will adaptively lead out the tape; when the copper foil tape lead-out section 13 is subjected to tension, the copper foil storage roll will adaptively lead out the copper foil tape.

[0037] The conveying start end of the linear tape conveying platform 19 is rotatably provided with a tape roller 15; after the tape lead-out section 9a crosses the tape roller 15, it is parallel to the conveying surface of the linear tape conveying platform 19, with the adhesive surface facing upwards;

[0038] The tape parallel to the conveying surface of the linear tape conveying platform 19 is recorded as the horizontal tape conveying section 9b; there is a tape pulling device at the end of the horizontal tape conveying section 9b away from the tape roller 15. Under the pulling of the tape pulling device, the horizontal tape conveying section 9b moves linearly along the conveying direction of the linear tape conveying platform 19.

[0039] A fixed clamping seat 11 is arranged in front of the conveying starting end of the linear tape conveying platform 19, and a lifting clamp 12 is arranged above the clamping seat 11. The clamp lifting device 7 can drive the lifting clamp 12 to do lifting movement.

[0040] A clamping gap 10 is formed between the lifting clamp 12 and the clamping seat 11. In the initial state, the end of the copper foil lead-out section 13 passes through the clamping gap 10 and is clamped by the clamping gap 10; the portion of the end of the copper foil lead-out section 13 that has passed through the clamping gap 10 is recorded as the copper foil end portion 8 to be clamped; a translation clamp 16 is arranged above the linear tape conveying platform 19, and the translation clamp 16 is fixedly mounted on a translation arm 18, and the translation arm 18 can drive the translation clamp 16 to translate along the length direction of the linear tape conveying platform 19; the clamping part of the translation clamp 16 is at the same height as the copper foil lead-out section 13; the translation arm 18 can drive the translation clamp 16 to translate to the copper foil end portion 8 of the copper foil lead-out section 13 to clamp the copper foil.

[0041] A lifting platform 4 is arranged parallel to and directly above the horizontal conveying section 9b of the tape, and the lifting platform 4 is installed on a lifting arm 5 which can perform lifting and lowering movements; at least one pair of negative pressure adsorption heads 17 with suction ports facing downwards are fixedly installed on the lower side of the front end of the lifting platform 4; a rolling wheel 3 is arranged on the side of the translation clamp 16 away from the lifting clamp 12, and the rolling wheel 3 is rotatably installed on a lifting and lowering rolling wheel bracket 2, and the rolling wheel bracket 2 can drive the rolling wheel surface of the rolling wheel 3 to descend to be tangent to the horizontal conveying section 9b of the tape; a downward-facing laser distance sensor 21 is fixedly installed on the lifting platform 4 at the front side of the negative pressure adsorption head 17.

[0042] The clamping surface between the clamping seat 11 and the lifting clamp 12 is a rubber flexible clamping surface.

[0043] A copper foil cutting device capable of cutting the copper foil tape is provided on one side of the lifting clamp 12 close to the linear tape conveying platform 19;

[0044] The copper foil cutting device capable of cutting the copper foil strip has the following two embodiments:

[0045] First embodiment: Figure 3 The copper foil cutting device comprises a vertical cutter 6 which is sharp at the lower end and can be raised and lowered, and has the characteristics of fast process and simple structure.

[0046] Second embodiment: Figure 4 , 5 , 6; the copper foil cutting device includes a disc-shaped rotating knife seat 28, the axis of the disc-shaped rotating knife seat 28 is horizontal and perpendicular to the extension direction of the linear tape conveying platform 19; a cutter 26 is integrally arranged along the tangential direction on the upper part of the outer peripheral wall of the disc-shaped rotating knife seat 28 and close to the side of the clamp holding fast lifter 7, and the lower oblique end of the cutter 26 is a sharp end; it also includes a knife seat drive motor 24 that can drive the disc-shaped rotating knife seat 28 to rotate along the axis, and the knife seat drive motor 24 is installed on the lifting arm 23 that can perform lifting and lowering movements; a hollow negative pressure bin 31 is arranged inside the disc-shaped rotating knife seat 28, and a negative pressure exhaust pump 25 is fixedly installed on one side of the disc-shaped rotating knife seat 28, and the exhaust end of the negative pressure exhaust pump 25 is connected to the hollow negative pressure bin 31 inside the disc-shaped rotating knife seat 28, and a plurality of negative pressure adsorption holes 27 connected to the hollow negative pressure bin 31 are evenly hollowed out at the lower part of the outer peripheral arc surface of the disc-shaped rotating knife seat 28.

[0047] Any section of copper foil attachment process:

[0048] Step 1: In the initial state, the negative pressure adsorption head 17 and the laser distance sensor 21 are located above the translation clamp 16 and the lifting clamp 12. A section of the tape horizontal conveying section 9b directly below the negative pressure adsorption head 17 and the laser distance sensor 21 has not been attached with copper foil. In the initial state, the end of the copper foil lead-out section 13 passes through the clamping slit 10 and is clamped by the clamping slit 10. The portion of the end of the copper foil lead-out section 13 that has passed through the clamping slit 10 is recorded as the copper foil end to be clamped 8. The copper foil cutting device is located above the copper foil lead-out section 13. Figure 3 's picture above.

[0049] Step 2: The translation arm 18 drives the translation clamp 16 to translate to the copper foil tape end to be clamped 8 of the copper foil tape lead-out section 13, and then controls the lifting clamp 12 to rise for a section, thereby releasing the clamping state of the clamping seam 10; then the translation arm 18 drives the translation clamp 16 to move away from the lifting clamp 12 along the conveying direction of the linear tape conveying platform 19 on the basis of clamping, so that the translation clamp 16 pulls the copper foil tape along the conveying direction of the linear tape conveying platform 19. The copper foil strip lead-out section 13 is then gradually led out along the length under the pull of the translation clamp 16, so that a section of the copper foil strip between the translation clamp 16 and the clamping seam 10 gradually becomes longer, until the translation clamp 16 returns to the initial position, and a section of the copper foil strip between the translation clamp 16 and the clamping seam 10 is recorded as the copper foil strip to be sheared section 20. At this time, the copper foil strip to be sheared section 20 is just below the negative pressure adsorption head 17 and the laser distance sensor 21; Figure 3 The middle picture of .

[0050] In step three, the laser distance sensor 21 detects the distance of the object directly below, and determines whether a section of copper foil tape to be cut 20 has been generated after the completion of "step two" by detecting the distance. If it is determined that a section of copper foil tape to be cut 20 has been generated, the next step of cutting and attaching process is executed; if not, it means that the translation clamp 16 did not clamp the end of the copper foil tape to be clamped 8 during "step two".

[0051] Step 4 of the “First Embodiment”:

[0052] First, the lifting clamp 12 is controlled to press down, so that the clamping seam 10 tightly clamps the connection between the copper foil strip to-be-cut section 20 and the copper foil strip lead-out section 13; at this time, the two ends of the straight copper foil strip to-be-cut section 20 are fixedly clamped by the translation clamp 16 and the clamping seam 10 respectively; then the lifting platform 4 is controlled to descend, so that the lower ends of the two negative pressure adsorption heads 17 just descend to the upper surface of the copper foil strip to-be-cut section 20 close to the translation clamp 16, and the translation clamp 16 is still in the clamping state; then the vertical cutter 6 is controlled to move downward quickly, so that the sharp end of the lower end of the vertical cutter 6 quickly cuts off the end of the copper foil strip to-be-cut 20 away from the translation clamp 16, and the clamping state of the translation clamp 16 is immediately released at the moment when the end of the copper foil strip to-be-cut 20 away from the translation clamp 16 is completely cut off by the vertical cutter 6, as shown in FIG. Figure 3 In the figure below, the cut copper foil strip to be sheared 20 is recorded as a rectangular copper foil strip 11, and the two ends of the rectangular copper foil strip 11 become free, and at this time the upper surface of the rectangular copper foil strip 11 is adsorbed by two negative pressure adsorption heads 17; at this time, the translation clamp 16 is first driven by the translation arm 18 to move to the bottom of the detachment lifting platform 4; then the lifting platform 4 is controlled to descend, so that the two negative pressure adsorption heads 17 bring the lower surface of the adsorbed rectangular copper foil strip 11 down to the upper surface of the local adhesive tape horizontal conveying section 9b, and then the adsorption force of the two negative pressure adsorption heads 17 is released, and the two negative pressure adsorption heads 17 are controlled to rise to detach from the rectangular copper foil strip 11; thereby completing The rectangular copper foil strip 11 is initially attached. Then, under the pulling of the tape pulling device, the rectangular copper foil strip 11 that has completed the initial attachment follows the tape horizontal conveying section 9b to make a linear movement along the conveying direction of the straight tape conveying platform 19. When the rectangular copper foil strip 11 that has completed the initial attachment follows the tape horizontal conveying section 9b to be conveyed to the bottom of the rolling wheel 3 along the conveying direction of the straight tape conveying platform 19, the rolling wheel 3 is controlled to descend, so that the rolling wheel 3 rolls the rectangular copper foil strip 11 that has completed the initial attachment, so that the rectangular copper foil strip 11 is more tightly adhered to the tape horizontal conveying section 9b; thus, the attaching process of the rectangular copper foil strip 11 is completed once.

[0053] Defects of the first embodiment: During step four of the above-mentioned "first embodiment": "the two negative pressure adsorption heads 17 carry the lower surface of the adsorbed rectangular copper foil strip 11 down to the upper surface of the local adhesive tape horizontal conveying section 9b", since the rectangular copper foil strip 11 is flexible, and only the upper surface of one end of the rectangular copper foil strip 11 is adsorbed by the two negative pressure adsorption heads 17, and the other end is free, the copper foil is easily twisted and torsioned under the action of ambient airflow and wind force during the process of the lower surface of the rectangular copper foil strip 11 descending to the local adhesive tape horizontal conveying section 9b, and there is a possibility of attachment failure, and the working environment is required to be high. The working process of the "second embodiment" effectively avoids this problem.

[0054] Step 4 of the “Second Embodiment”:

[0055] The disc-shaped rotating knife seat 28 is driven to descend by the lifting arm 23 until the lower arc surface of the disc-shaped rotating knife seat 28 presses downward the originally straight copper foil strip to-be-cut section 20. Since the clamp holding seam 10 is in a loose state at this time, when the middle part of the copper foil strip to-be-cut section 20 is subjected to downward pressure, the copper foil strip to-be-cut section 20 generates a pulling force on the copper foil strip lead-out section 13 under the force transmission, and the copper foil storage roll causes the copper foil strip lead-out section 13 to be adaptively led out, and finally the copper foil strip to-be-cut section 20 is adaptively bent downward. At this time, the copper foil strip to-be-cut section 20 is once a first straight section 20a, a curved surface section 20b and a second straight section 20c along the length direction, as shown in FIG. Figure 4 The lower figure shows that the arc segment 20b is attached to the lower arc surface of the disc-shaped rotating knife seat 28 in an arc shape; at this time, the lifting clamp 12 is controlled to press down, so that the clamping seam 10 tightly clamps the connection between the second straight segment 20c of the copper foil strip to be cut 20 and the copper foil strip lead-out segment 13, so that the two ends of the bent and taut copper foil strip to be cut 20 are fixedly clamped by the translation clamp 16 and the clamping seam 10 respectively; the negative pressure suction pump 25 is controlled to make the negative pressure adsorption holes 27 on the lower arc surface of the disc-shaped rotating knife seat 28 form a certain adsorption force on the arc segment 20b of the copper foil strip to be cut 20; then the knife seat driving motor 24 drives The disc-shaped rotating knife seat 28 rotates clockwise, so that the sharp end of the cutter 26 on the disc-shaped rotating knife seat 28 rotates clockwise along the trajectory circle 30 until the sharp end of the cutter 26 cuts off the intersection 33 of the trajectory circle 30 on the second straight line segment 20c and the second straight line segment 20c. After the second straight line segment 20c is cut off, the arc segment 20b is sucked by a plurality of negative pressure adsorption holes 27 on the lower arc surface of the disc-shaped rotating knife seat 28, so that the end of the copper foil tape to be sheared 20 close to the disc-shaped rotating knife seat 28 will not fall under the action of gravity, nor will it be twisted under the action of the disturbance of the environmental wind force.

[0056] Then the lifting platform 4 is controlled to descend, so that the lower end of at least one of the two negative pressure adsorption heads 17 descends to the upper surface of the first straight line segment 20a, and the translation clamp 16 is immediately controlled to release the clamping state. At this time, the translation clamp 16 is first driven by the translation arm 18 to move to the position directly below the lifting platform 4; then the lifting platform 4 is controlled to descend, so that the two negative pressure adsorption heads 17 with the lower surface of the first straight line segment 20a adsorbed are descended to the upper surface of the local adhesive tape horizontal conveying section 9b, and then the adsorption force of the two negative pressure adsorption heads 17 is released, and the two negative pressure adsorption heads 17 are controlled to rise to be separated;

[0057] Then, under the pulling of the tape pulling device, the first straight section 20a adhered to the horizontal conveying section 9b of the tape follows the conveying of the horizontal conveying section 9b of the tape along the straight tape conveying platform 19. At the same time, the lifting arm 23 drives the disc-shaped rotating knife seat 28 to slowly descend until the arc surface section 20b also descends to the upper surface of the horizontal conveying section 9b of the tape. Then, the negative pressure suction pump 25 is turned off to make the lower arc surface of the disc-shaped rotating knife seat 28 lose its adsorption force on the arc surface section 20b. Then, the disc-shaped rotating knife seat 28 is controlled to rise until it is separated from the arc surface section 20b. At this time, the first straight section 20a originally The copper foil strip to be cut 20 composed of the arc segment 20b and the second straight segment 20c is transformed into a rectangular copper foil strip 11 which is initially adhered to the surface of the horizontal conveying segment 9b of the tape; when the rectangular copper foil strip 11 which has completed the initial attachment follows the horizontal conveying segment 9b of the tape and is conveyed to the bottom of the rolling wheel 3 along the conveying direction of the linear tape conveying platform 19, the rolling wheel 3 is controlled to descend so that the rolling wheel 3 rolls the rectangular copper foil strip 11 which has completed the initial attachment, so that the rectangular copper foil strip 11 is more tightly adhered to the horizontal conveying segment 9b of the tape; thereby completing the attachment process of the rectangular copper foil strip 11.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Transformer adhesive copper foil, characterized by: The invention comprises a single-sided adhesive tape (9c) and a rectangular copper foil (1); the reverse side of the rectangular copper foil (1) is attached to the adhesive side of the single-sided adhesive tape (9c) in the unfolded state in the center along the length direction, and the single-sided adhesive tape (9c) in the unfolded state is folded along four contour lines of the rectangular copper foil (1) and then attached to the front edge of the rectangular copper foil (1), so as to form a folded adhesive tape (9e) that half wraps the rectangular copper foil (1), and forms a strip-shaped copper foil exposed portion (1a) in the center of the front side of the rectangular copper foil (1).

2. The transformer adhesive-backed copper foil according to claim 1, characterized in that: A grounding wire (34) is welded to a portion (35) of the copper foil exposed portion (1a).

3. A copper foil attaching device for transformer adhesive-backed copper foil, characterized in that: The invention comprises a tape lead-out section (9a) led out from a tape storage roll and extending obliquely upward, a copper foil tape lead-out section (13) led out from a copper foil storage roll and extending horizontally, and a horizontal straight tape conveying platform (19); the extension direction of the copper foil tape lead-out section (13) is parallel to the straight tape conveying platform (19); a tape roller (15) is rotatably arranged at the conveying starting end of the straight tape conveying platform (19); after the tape lead-out section (9a) crosses over the tape roller (15), it is parallel to the conveying surface of the straight tape conveying platform (19), and the tape surface faces upward; the tape parallel to the conveying surface of the straight tape conveying platform (19) is recorded as a horizontal tape conveying section (9b); a tape pulling device is provided at one end of the horizontal tape conveying section (9b) away from the tape roller (15), and under the pulling of the tape pulling device, the horizontal tape conveying section (9b) moves linearly along the conveying direction of the straight tape conveying platform (19).

4. The copper foil attaching device of the transformer adhesive-backed copper foil according to claim 3, characterized in that: A fixed clamp seat (11) is arranged in front of the conveying starting end of the linear adhesive tape conveying platform (19), and a lifting clamp (12) is arranged above the clamp seat (11). The clamp lifter (7) can drive the lifting clamp (12) to perform lifting movement; a clamp gap (10) is formed between the lifting clamp (12) and the clamp seat (11); in the initial state, the end of the copper foil lead-out section (13) passes through the clamp gap (10) and is clamped by the clamp gap (10); the portion of the end of the copper foil lead-out section (13) that has passed through the clamp gap (10) is recorded as the copper foil end to-be-clamped portion (8); A translation clamp (16) is arranged above the linear tape conveying platform (19); a translation arm (18) can drive the translation clamp (16) to translate along the length direction of the linear tape conveying platform (19); the clamping portion of the translation clamp (16) is at the same height as the copper foil lead-out section (13); the translation arm (18) can drive the translation clamp (16) to translate to the copper foil end to-be-clamped portion (8) that clamps the copper foil lead-out section (13).

5. The copper foil attaching device of the transformer adhesive-backed copper foil according to claim 4, characterized in that: A lifting platform (4) is arranged parallel to and directly above the horizontal conveying section (9b) of the adhesive tape, and the lifting platform (4) is mounted on a lifting arm (5) capable of lifting and lowering movement; at least one pair of negative pressure adsorption heads (17) with suction ports facing downwards are fixedly mounted on the lower front end of the lifting platform (4), and a downwards laser distance sensor (21) is fixedly mounted on the front side of the negative pressure adsorption heads (17) on the lifting platform (4).

6. The copper foil attaching device of the transformer adhesive-backed copper foil according to claim 5, characterized in that: A rolling wheel (3) is arranged on the side of the translation clamp (16) away from the lifting clamp (12); the rolling wheel (3) is rotatably mounted on a lifting rolling wheel bracket (2); the rolling wheel bracket (2) can drive the rolling wheel surface of the rolling wheel (3) to descend to be tangent to the horizontal conveying section (9b) of the adhesive tape.

7. The copper foil attaching device of the transformer adhesive-backed copper foil according to claim 6, characterized in that: A copper foil cutting device capable of cutting the copper foil tape is arranged on one side of the lifting clamp (12) close to the linear adhesive tape conveying platform (19).

8. The copper foil attaching device of the transformer adhesive-backed copper foil according to claim 7, characterized in that: The copper foil cutting device comprises a vertical cutting knife (6) which can be raised and lowered and has a sharp end at the lower end.

9. The copper foil attaching device of the transformer adhesive-backed copper foil according to claim 7, characterized in that: The copper foil cutting device comprises a disc-shaped rotating knife seat (28), the axis of which is horizontal and perpendicular to the extension direction of the linear tape conveying platform (19); a cutter (26) is integrally provided on the upper part of the outer peripheral wall of the disc-shaped rotating knife seat (28) and close to the clamping quick lifter (7) along the tangential direction, and the lower oblique end of the cutter (26) is a sharp end; and a knife seat drive motor (24) capable of driving the disc-shaped rotating knife seat (28) to rotate along the axis, the knife seat drive motor (24) is installed on a lifting arm (23) capable of lifting and lowering movement; a hollow negative pressure chamber (31) is arranged inside the disc-shaped rotating knife seat (28); a negative pressure suction pump (25) is fixedly installed on one side of the disc-shaped rotating knife seat (28); the suction end of the negative pressure suction pump (25) is connected to the hollow negative pressure chamber (31) inside the disc-shaped rotating knife seat (28); and a plurality of negative pressure adsorption holes (27) connected to the hollow negative pressure chamber (31) are evenly hollowed out at the lower part of the outer circumferential arc surface of the disc-shaped rotating knife seat (28).

10. The attaching process of the copper foil attaching device of the transformer adhesive-backed copper foil according to claim 9, characterized in that: Step 1, initial state; Step 2: The translation clamp (16) is translated to the copper foil tape end to be clamped (8) of the copper foil tape lead-out section (13), and then the clamping state of the clamping seam (10) is released; then the translation clamp (16) is driven to translate so that a section of the copper foil tape between the translation clamp (16) and the clamping seam (10) gradually becomes longer, and the section of the copper foil tape between the translation clamp (16) and the clamping seam (10) is recorded as the copper foil tape to be sheared section (20); at this time, the copper foil tape to be sheared section (20) is located below the negative pressure adsorption head (17) and the laser distance sensor (21); In step three, the laser distance sensor (21) detects the distance of the object directly below, and determines whether a section of copper foil tape to be cut (20) has been generated after the completion of "step two" by detecting the distance. If it is determined that a section of copper foil tape to be cut (20) has been generated, the next step of cutting and attaching is executed.

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