Transformer adhesive copper foil, copper foil attachment process and its copper foil attachment device

Abstract

The present invention discloses a back-adhesive copper foil for a transformer, which comprises a single-sided tape and a rectangular copper foil; the reverse side of the rectangular copper foil is centrally attached along the length direction to the adhesive surface of the single-sided tape in the unfolded state, and the single-sided tape in the unfolded state is respectively folded along the four contour lines of the rectangular copper foil and adhered to the front edge of the rectangular copper foil, forming a folded tape that semi-wraps the rectangular copper foil, and making a strip-shaped copper foil exposed portion formed at the central position of the front surface of the rectangular copper foil; the structural form of this folded tape that semi-wraps the rectangular copper foil in the present invention is more stable than the traditional ordinary parallel attachment, the edges of the copper foil are completely wrapped, and the edge tear resistance of the copper foil is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the field of copper foil back glue for transformers. Background Art

[0002] The back glue copper foil of a transformer is a composite material obtained by pasting a copper foil and an insulating tape to each other, which is wrapped outside 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, so as to ensure the normal operation of the transformer. The back glue copper foil can help conduct the heat generated by the transformer outwards, thereby reducing the temperature rise of the transformer and further protecting the operation of the transformer; the presence of the back glue on the copper foil can enhance the structural strength of the copper foil, so as to resist external force impacts and vibrations; the back glue copper foil of the transformer is widely used in various transformer products, especially in the fields of high-frequency transformers, power transformers, etc.

[0003] The existing back glue copper foil generally pastes the copper foil and the tape in parallel, and the edge contours of the pasting cannot completely coincide, so that the edges of the pasted copper foil are still prone to tearing problems.

[0004] When manufacturing the back glue copper foil of the transformer, the most crucial process is the process of centering and pasting the rectangular copper foil along the length direction on the adhesive surface of the single-sided tape. Since both the copper foil and the tape are flexible, during the fully automatic pasting process, if the copper foil is distorted, it is likely to cause the pasting to fail. Summary of the Invention

[0005] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the present invention provides a transformer back glue copper foil, a copper foil pasting process and a copper foil pasting device thereof, which can improve the edge tear resistance of the copper foil back glue.

[0006] Technical Solution: To achieve the above object, the transformer back glue copper foil of the present invention includes a single-sided tape and a rectangular copper foil; the reverse side of the rectangular copper foil is centered and pasted along the length direction on the adhesive surface of the single-sided tape in the unfolded state, and the single-sided tape in the unfolded state is respectively 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 semi-wraps the rectangular copper foil, and a strip-shaped copper foil exposed part is formed at the centered position on the front surface of the rectangular copper foil.

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

[0008] The copper foil attaching device for the transformer back adhesive copper foil includes a tape leading section that extends obliquely upward from the tape storage roll, a copper foil tape leading section that extends horizontally from the copper foil storage roll, and a horizontal linear tape conveying platform; the extending direction of the copper foil tape leading section is parallel to the linear tape conveying platform; a tape roller is rotatably arranged at the starting end of the linear tape conveying platform; after the tape leading section crosses the tape roller, it is parallel to the conveying surface of the linear tape conveying platform, and the adhesive surface faces upward; the tape parallel to the conveying surface of the linear tape conveying platform is denoted as the tape horizontal conveying section; at one end of the tape horizontal conveying section far from the tape roller, there is a tape pulling device, and under the pulling of the tape pulling device, the tape horizontal conveying section moves linearly along the conveying direction of the linear tape conveying platform.

[0009] Further, a fixed clamping seat is arranged in front of the starting end of the linear tape conveying platform, and there is a lifting clamping block above the clamping seat. The clamping block lifter can drive the lifting clamping block to move up and down; a clamping gap is formed between the lifting clamping block and the clamping seat. In the initial state, the end of the copper foil tape leading section passes through the clamping gap and is clamped by the clamping gap; the part of the end of the copper foil tape leading section that has passed through the clamping gap is denoted as the part of the copper foil tape end to be clamped.

[0010] A translation clamping device is arranged above the linear tape conveying platform, and it also includes a translation arm. The translation clamping device is fixedly installed on the translation arm, and the translation arm can drive the translation clamping device to translate along the length direction of the linear tape conveying platform; the height of the clamping part of the translation clamping device is the same as that of the copper foil tape leading section; the translation arm can drive the translation clamping device to translate to clamp the part of the copper foil tape end to be clamped of the copper foil tape leading section.

[0011] Further, a lifting platform is arranged in parallel directly above the tape horizontal conveying section. The lifting platform is installed on a lifting arm that can move up and down; at least a pair of negative pressure suction heads with the suction ports facing downward are fixedly installed on the lower side of the front end of the lifting platform, and a downward laser distance sensor is fixedly installed on the front side of the lifting platform where the negative pressure suction heads are located.

[0012] Further, a rolling wheel is arranged on the side of the translation clamping device far from the lifting clamping block. The rolling wheel is rotatably installed on a liftable rolling wheel support, and the rolling wheel support can drive the rolling wheel surface of the rolling wheel to descend to be tangent to the tape horizontal conveying section.

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

[0014] Optionally, the copper foil cutting device includes a vertically movable vertical cutter with a sharp end at the lower end.

[0015] Optionally, the copper foil cutting device includes a disc-shaped rotating tool holder. The axis of the disc-shaped rotating tool holder is horizontal and perpendicular to the extending direction of the linear tape conveying platform. On the upper part of the outer peripheral wall of the disc-shaped rotating tool holder and on the side close to the clamping block lifter, a cutting tool is integrally arranged tangentially. The lower end of the cutting tool slopes downward and is the sharp end. It also includes a tool holder driving motor that can drive the disc-shaped rotating tool holder to rotate along the axis. The tool holder driving motor is installed on a lifting arm that can move up and down. A hollow negative pressure chamber is arranged inside the disc-shaped rotating tool holder. A negative pressure air pump is fixedly installed on one side of the disc-shaped rotating tool holder. The air suction end of the negative pressure air pump is communicated with the hollow negative pressure chamber inside the disc-shaped rotating tool holder. A number of negative pressure adsorption holes communicating with the hollow negative pressure chamber are evenly hollowed out at the lower part of the outer arc surface of the disc-shaped rotating tool holder.

[0016] Further, for the attaching process of the copper foil attaching device of the transformer back adhesive copper foil, it is characterized in that:

[0017] Step 1, initial state;

[0018] Step 2, the translation gripper is translated to clamp the end portion to be clamped of the copper foil strip at the lead-out section of the copper foil strip, and then the clamping state of the clamping seam is released. Then drive the translation gripper to translate so that the length of a section of the copper foil strip between the translation gripper and the clamping seam gradually becomes longer. Denote a section of the copper foil strip between the translation gripper and the clamping seam as the copper foil strip to be sheared section. At this time, the copper foil strip to be sheared section 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 judged whether a section of the copper foil strip to be sheared section has been generated after "Step 2". If it is determined that a section of the copper foil strip to be sheared section has been generated, then perform the next cutting and attaching process.

[0020] Beneficial effects: The structural form of the folded tape of the semi-wrapped rectangular copper foil in the present invention is more stable than the traditional ordinary parallel attachment. The edges of the copper foil are completely wrapped, effectively improving the edge tear resistance of the copper foil.

[0021] This solution also provides a process system and process for centrally attaching a number of rectangular copper foils at equal intervals along the length direction to the adhesive surface of a long strip of single-sided tape. In the second embodiment, it also solves the problem that the copper foil is prone to twist and turn under the action of ambient air flow and wind during the process of the lower surface of the rectangular copper foil strip descending to the horizontal conveying section of the local adhesive tape, resulting in attachment failure. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the structure of the transformer back adhesive copper foil of this solution and a schematic diagram of the s3 process;

[0023] Figure 2 It is a schematic diagram of the s1 and s2 processes;

[0024] Figure 3 They are the overall structure of the attaching device and schematic diagrams of three states. The "copper foil cutting device" in this figure is the "first embodiment".

[0025] Figure 4 They are schematic diagrams of two states of the overall structure where the "copper foil cutting device" is the "second embodiment".

[0026] Figure 5 It is a schematic structural diagram where the "copper foil cutting device" is the "second embodiment".

[0027] Figure 6 It is a schematic cross-sectional structural diagram of a disc-shaped rotary tool holder. Specific implementation manners

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

[0029] As shown in the attached Figures 1 to 6 the back adhesive copper foil of the transformer, as Figure 1 , includes a single-sided tape 9c and a rectangular copper foil 1. 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 centrally attached along the length direction to the adhesive surface of the single-sided tape 9c in the unfolded state, and the single-sided tape 9c in the unfolded state is respectively folded along the four contour lines of the rectangular copper foil 1 and adhered to the front edge of the rectangular copper foil 1, forming a folded tape 9e that semi-wraps the rectangular copper foil 1, and a strip-shaped copper foil exposed portion 1a is formed at the central position on the front side of the rectangular copper foil 1. This structural form of the folded tape 9e that semi-wraps the rectangular copper foil 1 is more stable than the traditional ordinary parallel attachment, and the edges of the copper foil are completely wrapped, effectively improving the anti-tearing edge ability of the copper foil.

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

[0031] The overall manufacturing process of the back adhesive copper foil of the present solution, as Figure 1 and 2 :

[0032] S1, centrally attach a plurality of rectangular copper foils 1 to the adhesive surface of the long strip single-sided tape at equal intervals along the length direction;

[0033] S2, cut the long strip single-sided tape between any two adjacent attached rectangular copper foils 1, thereby forming a plurality of unfolded single-sided tapes 9c, and each unfolded single-sided tape 9c is centrally attached with a rectangular copper foil 1;

[0034] In step S3, the single-sided tape 9c in the unfolded state is folded along the four contour lines of the rectangular copper foil 1 respectively and adhered to the front edge of the rectangular copper foil 1 to form a folded tape 9e that semi-wraps the rectangular copper foil 1, and a strip-shaped copper foil exposed portion 1a is formed at the center position on the front side of the rectangular copper foil 1; finally, a ground wire 34 is welded to a part 35 of the copper foil exposed portion 1a.

[0035] This solution is a process system designed for the process in step S1 above. As Figures 3 to 6 shown, the specific content is as follows:

[0036] A copper foil attaching device for a transformer back adhesive copper foil, including a tape leading-out section 9a that is led out from a tape storage roll and extends obliquely upward, a copper foil strip leading-out section 13 that is led out from a copper foil storage roll and extends horizontally, and a horizontal linear tape conveying platform 19; the extending direction of the copper foil strip leading-out section 13 is parallel to the linear tape conveying platform 19; when the tape leading-out section 9a is subjected to a pulling force, the tape storage roll will adaptively lead out the tape; when the copper foil strip leading-out section 13 is subjected to a pulling force, the copper foil storage roll will adaptively lead out the copper foil strip.

[0037] A tape roller 15 is rotatably arranged at the starting end of the linear tape conveying platform 19; the tape leading-out section 9a is parallel to the conveying surface of the linear tape conveying platform 19 after passing over the tape roller 15, and the adhesive surface faces upward;

[0038] The tape parallel to the conveying surface of the linear tape conveying platform 19 is denoted as a tape horizontal conveying section 9b; there is a tape pulling device at one end of the tape horizontal conveying section 9b away from the tape roller 15, and under the pulling of the tape pulling device, the tape horizontal conveying section 9b makes a linear motion along the conveying direction of the linear tape conveying platform 19.

[0039] A fixed clamping seat 11 is arranged in front of the starting end of the linear tape conveying platform 19, and there is a lifting clamping block 12 above the clamping seat 11, and a clamping block lifter 7 can drive the lifting clamping block 12 to make a lifting motion.

[0040] A clamping slot 10 is formed between the lifting clamping block 12 and the clamping seat 11. In the initial state, the end of the copper foil strip leading-out section 13 passes through the clamping slot 10 and is clamped by the clamping slot 10; the part of the end of the copper foil strip leading-out section 13 that has passed through the clamping slot 10 is denoted as a copper foil strip end portion to be clamped 8; a translation clamp 16 is arranged above the linear tape conveying platform 19, and further includes a translation arm 18. The translation clamp 16 is fixedly installed on the 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 height of the clamping portion of the translation clamp 16 is the same as that of the copper foil strip leading-out section 13; the translation arm 18 can drive the translation clamp 16 to translate to clamp the copper foil strip end portion to be clamped 8 of the copper foil strip leading-out section 13.

[0041] Above the horizontal conveyor section 9b of the tape, a lifting platform 4 is arranged in parallel. The lifting platform 4 is installed on a lifting arm 5 capable of performing lifting motion; at least a pair of negative pressure suction heads 17 with suction ports facing down are fixedly installed on the lower side of the front end of the lifting platform 4; on the side of the translation gripper 16 away from the lifting jaw block 12, a rolling wheel 3 is arranged. The rolling wheel 3 is rotatably installed on a liftable 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 conveyor section 9b of the tape; a downward laser distance sensor 21 is fixedly installed on the front side of the lifting platform 4 where the negative pressure suction head 17 is located.

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

[0043] On the side of the lifting jaw block 12 close to the linear tape conveyor platform 19, a copper foil cutting device capable of cutting the copper foil tape is arranged;

[0044] There are the following two embodiments of the copper foil cutting device capable of cutting the copper foil tape:

[0045] The first embodiment: As Figure 3 , the copper foil cutting device includes a vertically liftable cutting knife 6 with a sharp end at the lower end, which has the characteristics of fast process and simple structure.

[0046] The second embodiment: As Figure 4 , 5 , 6; the copper foil cutting device includes a disc-shaped rotary tool holder 28. The axis of the disc-shaped rotary tool holder 28 is horizontal and perpendicular to the extending direction of the linear tape conveyor platform 19; on the upper part of the outer peripheral wall of the disc-shaped rotary tool holder 28 and on the side close to the jaw block lifter 7, a cutting knife 26 is integrally arranged along the tangent direction. The lower end of the cutting knife 26 is obliquely downward and is the sharp end; it also includes a tool holder drive motor 24 capable of driving the disc-shaped rotary tool holder 28 to rotate along the axis. The tool holder drive motor 24 is installed on a lifting arm 23 capable of performing lifting motion; a hollow negative pressure chamber 31 is arranged inside the disc-shaped rotary tool holder 28. A negative pressure air pump 25 is fixedly installed on one side of the disc-shaped rotary tool holder 28. The air suction end of the negative pressure air pump 25 is communicated with the hollow negative pressure chamber 31 inside the disc-shaped rotary tool holder 28. A plurality of negative pressure suction holes 27 communicating with the hollow negative pressure chamber 31 are uniformly hollowed out on the lower part of the outer circumferential arc surface of the disc-shaped rotary tool holder 28.

[0047] The attaching process of any section of copper foil:

[0048] Step 1: In the initial state, the negative pressure suction head 17 and the laser distance sensor 21 are located above the translation gripper 16 and the lifting clamp block 12. There is no copper foil attached to a section of the horizontal conveyor section 9b directly below the pair of negative pressure suction heads 17 and the laser distance sensor 21. And in the initial state, the end of the copper foil strip leading section 13 passes through the clamping slot 10 and is clamped by the clamping slot 10. Denote the part of the end of the copper foil strip leading section 13 that has passed through the clamping slot 10 as the part to be clamped at the end of the copper foil strip 8. The copper foil cutting device is located above the copper foil strip leading section 13; as shown in Figure 3 the upper figure above.

[0049] Step 2: The translation arm 18 drives the translation gripper 16 to translate to grip the part to be clamped at the end of the copper foil strip 8 of the copper foil strip leading section 13. Then control the lifting clamp block 12 to rise a certain distance to release the clamping state of the clamping slot 10. Then the translation arm 18 drives the translation gripper 16 to move away from the lifting clamp block 12 along the conveying direction of the linear tape conveyor platform 19 on the basis of gripping, so that the translation gripper 16 pulls the copper foil strip leading section 13 along the conveying direction of the linear tape conveyor platform 19, and further makes the copper foil strip leading section 13 gradually extend along its length under the pull of the translation gripper 16, so that the length of the copper foil strip between the translation gripper 16 and the clamping slot 10 gradually increases until the translation gripper 16 returns to the initial position. Denote the copper foil strip between the translation gripper 16 and the clamping slot 10 as the copper foil strip to be sheared section 20. At this time, the copper foil strip to be sheared section 20 is just located below the negative pressure suction head 17 and the laser distance sensor 21; as shown in Figure 3 the middle figure above.

[0050] Step 3: The laser distance sensor 21 detects the distance of the object directly below. Determine whether a copper foil strip to be sheared section 20 has been generated after the end of "Step 2" by the detected distance. If it is determined that a copper foil strip to be sheared section 20 has been generated, then perform the next cutting and attaching process; if not, it means that the translation gripper 16 did not grip the part to be clamped at the end of the copper foil strip 8 during the process of "Step 2".

[0051] Step 4 of "the first embodiment":

[0052] First, control the lifting clamp block 12 to perform a downward pressing action, so that the clamping slot 10 tightly clamps the connection between the copper foil strip to-be-sheared section 20 and the copper foil strip lead-out section 13; at this time, both ends of the linear copper foil strip to-be-sheared section 20 are respectively fixed and clamped by the translation clamp 16 and the clamping slot 10; then control the lifting platform 4 to descend, so that the lower ends of the two negative pressure suction heads 17 just descend to suck the upper surface of the copper foil strip to-be-sheared section 20 near one end of the translation clamp 16, and at this time the translation clamp 16 is still in the clamping state; then control the vertical cutter 6 to move quickly downward, so that the sharp end at the lower end of the vertical cutter 6 quickly cuts off the end of the copper foil strip to-be-sheared section 20 away from the translation clamp 16, and immediately releases the clamping state of the translation clamp 16 the moment the end of the copper foil strip to-be-sheared section 20 away from the translation clamp 16 is completely cut off by the vertical cutter 6, as shown in Figure 3 the following figure. Denote the cut-off copper foil strip to-be-sheared section 20 as the rectangular copper foil strip 110. Both ends of the rectangular copper foil strip 110 become free states, and at this time the upper surface of the rectangular copper foil strip 110 is sucked by the two negative pressure suction heads 17; at this time, first drive the translation clamp 16 to displace away from directly below the lifting platform 4 through the translation arm 18; then control the lifting platform 4 to descend, so that the two negative pressure suction heads 17 drive the lower surface of the adsorbed rectangular copper foil strip 110 to descend to the upper surface of the local adhesive tape horizontal conveying section 9b, and then release the adsorption force of the two negative pressure suction heads 17, and control the two negative pressure suction heads 17 to rise away from the rectangular copper foil strip 110; thus completing the preliminary attachment process of the rectangular copper foil strip 110; then under the traction of the tape traction device, the preliminarily attached rectangular copper foil strip 110 moves linearly along the conveying direction of the linear tape conveying platform 19 following the tape horizontal conveying section 9b. When the preliminarily attached rectangular copper foil strip 110 follows the tape horizontal conveying section 9b and is conveyed to below the rolling wheel 3 along the conveying direction of the linear tape conveying platform 19, control the rolling wheel 3 to descend, so that the rolling wheel 3 performs rolling on the preliminarily attached rectangular copper foil strip 110, making the rectangular copper foil strip 110 adhere more tightly to the tape horizontal conveying section 9b; thus completing one attachment process for the rectangular copper foil strip 110.

[0053] Defects existing in the first embodiment: In the process of step four of the above "first embodiment": In the process of "the two negative pressure suction heads 17 drive the lower surface of the adsorbed rectangular copper foil strip 110 to descend to the upper surface of the local adhesive tape horizontal conveying section 9b", since the rectangular copper foil strip 110 is flexible and only the upper surface of one end of the rectangular copper foil strip 110 is sucked by the two negative pressure suction heads 17 and the other end is in a free state, therefore, in the process of the lower surface of the rectangular copper foil strip 110 descending to the local adhesive tape horizontal conveying section 9b, the copper foil is prone to twist and turn under the action of ambient air flow and wind, and there is a possibility of attachment failure, and the requirement for the working environment is high. The working process of the "second embodiment" effectively avoids this problem.

[0054] Step Four of "The Second Embodiment":

[0055] Drive the disc-shaped rotary tool holder 28 to descend through the lifting arm 23 until the lower arc surface of the disc-shaped rotary tool holder 28 presses downward against the section to be sheared 20 of the originally straight copper foil strip. Since the clamping slot 10 is in a loosened state at this time, when the middle part of the section to be sheared 20 of the copper foil strip is subjected to a downward pressure, a pulling force will be generated on the section to be sheared 20 of the copper foil strip on the lead-out section 13 of the copper foil strip under the transmission of force. The copper foil storage roll adaptively leads out the lead-out section 13 of the copper foil strip, and finally the section to be sheared 20 of the copper foil strip bends downward adaptively. At this time, the section to be sheared 20 of the copper foil strip is successively a first straight section 20a, an arc section 20b, and a second straight section 20c along the length direction, as shown in Figure 4 the following figure below, where the arc section 20b is attached to the lower arc surface of the disc-shaped rotary tool holder 28 in an arc shape; at this time, control the lifting clamp block 12 to perform a downward pressing action to tightly clamp the connection between the second straight section 20c of the section to be sheared 20 of the copper foil strip and the lead-out section 13 of the copper foil strip by the clamping slot 10, so that both ends of the section to be sheared 20 of the copper foil strip in a bent and taut state are fixedly clamped by the translation gripper 16 and the clamping slot 10 respectively; control the negative pressure air pump 25 to make the negative pressure adsorption holes 27 on the lower arc surface of the disc-shaped rotary tool holder 28 form a certain adsorption force on the arc section 20b of the section to be sheared 20 of the copper foil strip; then the tool holder drive motor 24 drives the disc-shaped rotary tool holder 28 to rotate clockwise, so that the sharp end of the cutter 26 on the disc-shaped rotary tool holder 28 rotates clockwise along the locus circle 30 until the sharp end of the cutter 26 cuts off the intersection 33 of the locus circle 30 and the second straight section 20c on the second straight section 20c. After the second straight section 20c is cut off, since a plurality of negative pressure adsorption holes 27 on the lower arc surface of the disc-shaped rotary tool holder 28 suck the arc section 20b, one end of the section to be sheared 20 of the copper foil strip close to the disc-shaped rotary tool holder 28 will not drop under the action of gravity and will not be distorted under the action of environmental wind disturbance;

[0056] Then control the lifting platform 4 to descend so that the lower end of at least one of the two negative pressure suction heads 17 descends to suck the upper surface of the first straight section 20a, and immediately control the translation gripper 16 to release the clamping state. At this time, first drive the translation gripper 16 to displace through the translation arm 18 to move out from directly below the lifting platform 4; then control the lifting platform 4 to descend, so that the two negative pressure suction heads 17 drive the lower surface of the adsorbed first straight section 20a to descend to the upper surface of the local adhesive tape horizontal conveying section 9b, and then release the adsorption force of the two negative pressure suction heads 17 and control the two negative pressure suction heads 17 to rise to disengage;

[0057] Then, under the traction of the tape traction device, the first straight segment 20a adhered to the horizontal tape conveying section 9b follows the horizontal tape conveying section 9b to be conveyed along the straight tape conveying platform 19. At the same time, the lifting arm 23 drives the disc-shaped rotary cutter holder 28 to slowly descend until the arc segment 20b also descends to the upper surface of the adhered tape horizontal conveying section 9b. Then, the negative pressure air pump 25 is turned off, so that the lower arc surface of the disc-shaped rotary cutter holder 28 loses the adsorption force on the arc segment 20b. Then, the disc-shaped rotary cutter holder 28 is controlled to rise until it disengages from the arc segment 20b. At this time, the copper foil strip to be sheared 20 originally composed of the first straight segment 20a, the arc segment 20b and the second straight segment 20c becomes a rectangular copper foil strip 110 initially adhered to the surface of the tape horizontal conveying section 9b. When the rectangular copper foil strip 110 that has completed the preliminary attachment follows the horizontal tape conveying section 9b to be conveyed to the lower part 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 performs rolling on the rectangular copper foil strip 110 that has completed the preliminary attachment, making the rectangular copper foil strip 110 adhere more tightly to the tape horizontal conveying section 9b. Thus, a pasting process for the rectangular copper foil strip 110 is completed.

[0058] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. 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); A fixed clamp seat (11) is arranged in front of the conveying start end of the linear adhesive tape conveying platform (19), a lifting clamp block (12) is arranged above the clamp seat (11), and a clamp block lifter (7) can drive the lifting clamp block (12) to perform lifting movement; a clamping gap (10) is formed between the lifting clamp block (12) and the clamp seat (11), and 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 to-be-clamped portion (8); A translation clamp (16) is arranged above the linear adhesive tape conveying platform (19), and also includes a translation arm (18). The translation clamp (16) is fixedly mounted on the translation arm (18), and the translation arm (18) can drive the translation clamp (16) to translate along the length direction of the linear adhesive 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); 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 laser distance sensor (21) facing downwards is fixedly mounted on the front side of the negative pressure adsorption heads (17) of the lifting platform (4); A rolling wheel (3) is arranged on the side of the translation clamp (16) away from the lifting clamp block (12), and the rolling wheel (3) is rotatably mounted on a lifting 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 adhesive tape; A copper foil cutting device capable of cutting the copper foil tape is arranged on one side of the lifting clamp block (12) close to the linear adhesive tape conveying platform (19); 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 arranged on the upper part of the outer peripheral wall of the disc-shaped rotating knife seat (28) and close to the clamping block 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) 4) mounted 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 mounted on one side of the disc-shaped rotating knife seat (28); a 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).

2. The attaching process of the copper foil attaching device of the transformer adhesive-backed copper foil according to claim 1, 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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