Method and device for taping long and narrow flat coil

Abstract

According to the taping method and device for the long and narrow flat coil, the position of a taping head can be kept unchanged in the taping process, taping of a linear section of the coil is completed through translation of the coil, and taping of an arc-shaped area of a nose end is completed through vertical rotation of the taping head. And in the whole taping process of the coil, the stable supporting force is provided for the coil by utilizing the bearing platform, so that the stability of the whole taping process is good, the taping efficiency is high, and the overlapping rate is excellent. The whole taping device does not need complex track control of a taping head, and taping efficiency and stability are improved.

Description

Technical Field

[0001] The invention relates to the field of motor coil processing and manufacturing equipment, and in particular to a method and device for wrapping a narrow and flat coil. Background Art

[0002] In the manufacturing of some motor stator and rotor coils, some types of coils are narrow and flat. The coil is annular as a whole, with the nose ends at both ends roughly semi-circular, and a long straight line segment in the middle. The distance (span) between the two opposite straight lines is small. You can refer to Fig.17 . When taping this type of coil, since its straight section is relatively long, it is necessary to provide support force during the taping process. For example, if a gantry taping machine commonly used in the prior art is used, the straight section is clamped by a straight clamp, and the straight clamp is controlled to retreat according to the movement trajectory of the taping head during taping. This method is not suitable for this type of narrow and flat coil. On the one hand, the flat coil is not easy to clamp, and on the other hand, the narrow and long straight section requires many straight clamp components to prevent the straight section from shaking or deforming during taping due to insufficient support force. This makes the entire equipment costly and difficult to control the avoidance of a large number of straight clamps. In addition, since the straight section of the coil is relatively long, when taping it, it is necessary to increase the winding efficiency as much as possible on the basis of ensuring the overlapping rate, and it also puts higher requirements on the ability of the taping head to store the insulating white cloth tape.

[0003] Through searching, some technical documents on motor coil taping heads or taping equipment are disclosed in the prior art. For example, the utility model authorization announcement document with the publication number "CN205911139U" and the name "A new taping ring for a toroidal transformer taping machine" is disclosed. A new taping ring for a toroidal transformer taping machine is disclosed, including a taping ring body, the taping ring body includes an inner ring and an outer ring, the inner ring and the outer ring are fixed by a number of connecting blocks arranged between the inner ring and the outer ring, and rollers are fixed between the inner ring and the outer ring at intervals through bearings, the thickness of the inner ring is greater than the thickness of the outer ring, and an inner gear ring is provided on the inner diameter of the inner ring.

[0004] For example, the invention patent publication document with the publication number "CN118694112A" and the name "A fully automatic stator coil taping device" discloses a fully automatic stator coil taping device, including a machine platform, a guide rail is fixedly provided on the machine platform, a pad is fixedly provided at both ends of the guide rail, and each pad is provided with a placement plate at one end away from the machine platform, and the placement plate is used to place the stator coil; a sliding plate is slidably provided on the guide rail.

[0005] The above-mentioned comparative documents do not provide corresponding technical solutions for narrow and long flat coils. Therefore, it is of great significance to propose an efficient and stable tape wrapping method and tape wrapping device for narrow and long flat coils in the art. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a method for wrapping a narrow flat coil with tape, wherein the coil S is laid flat, and the rotating plane of the tape wrapping head is made perpendicular to the coil S, and the method comprises the following steps: First straight line segment wrapping S1, select one side straight line segment of the coil S as the first straight line segment, use the end point of the first straight line segment as the starting point A1, use the wrapping head to start rotating wrapping on the first straight line segment, and at the same time start to translate the coil along the first direction from the starting point A1, when the coil translates to reach the end B1 of the first straight line segment, go to the next step; The nose end is curved and taped S2. The coil position is maintained unchanged, and the taping head is rotated with the plane perpendicular to the coil as the axis, so that the taping head reaches the starting end A2 of the second straight line segment, and the nose end is curved and taped; The second straight line segment tape wrapping S3 is performed by rotating and wrapping the second straight line segment from the starting end A2, and the coil is translated along the second direction from the starting end A2, and the entire coil tape wrapping is completed when the coil is translated to reach the end B2 of the second straight line segment; In the above steps, a supporting force is provided to the entire straight section of the coil.

[0007] Furthermore, in the step of taping the nose end in arcuate form S2, the rotation center of the rotating taping head coincides with the center of the arcuate segment of the nose end and the rotation radius of the taping head is equal to the radius of the arcuate segment of the nose end.

[0008] Furthermore, when the taping head is located at the starting point A1 or the end B1 of the first straight segment or the starting end A2 of the second straight segment, the taping head is translated along the third direction so that the coil S always vertically passes through the winding rotation center of the taping head.

[0009] A narrow and flat coil wrapping device is also proposed, comprising a bearing bracket, a nose buckle assembly is installed at one end of the bearing bracket, the nose buckle assembly is connected with a translation mechanism, and a wrapping head is also installed on the bearing bracket at the opposite end of the nose buckle assembly. After the coil S is placed on the bearing bracket, it can be connected with the nose buckle assembly and then reciprocated along a straight line with the translation mechanism. The taping head comprises a rotating seat assembly, on which a taping head lower assembly is mounted, one end of the taping head lower assembly is hingedly connected to a taping head upper assembly, and further comprises a taping ring, which is divided into an upper taping ring located in the taping head upper assembly and a lower taping ring located in the taping head lower assembly. The taping head upper assembly can be flipped relative to the taping head lower assembly to open and close the taping ring; the rotating seat assembly drives the taping head lower assembly to rotate via a rotating mechanism.

[0010] Furthermore, the upper component of the taping head includes a flip frame, and the lower component of the taping head includes a flip seat. The flip frame flips relative to the flip seat with a flip axis as the axis. An arc-shaped adjacent surface is provided between the flip seat and the flip frame, and a locking rod is also included. The locking rod can pass through the arc-shaped adjacent surface to limit the flipping of the flip frame relative to the flip seat.

[0011] Furthermore, an upper bracket plate is connected to one side of the flip frame plate, the flip seat is connected to the lower support plate, one side of the lower support plate is connected to the lower support plate, the upper belt ring is located between the upper bracket plate and the flip frame plate with both ends exposed, and the lower belt ring is located between the lower support plate and the lower support plate with both ends exposed; a locking plate is connected to one end of the upper bracket plate and the flip frame plate relative to the flip axis, a locking groove is provided on the locking plate, and a locking block is provided at one end of the lower support plate and the lower bracket plate, and the locking block can be embedded in the locking groove to limit the relative separation of the upper belt ring and the lower belt ring.

[0012] Furthermore, the rotating seat assembly includes a rotating base plate, a guide rail is installed on the rotating base plate, a guide rail mounting plate is installed on the guide rail, and the guide rail mounting plate carries the upper assembly of the taping head; a rack is also installed on the guide rail mounting plate, and a gear assembly is installed on the rotating base plate, and the gear assembly and the rack are engaged to drive the guide rail mounting plate to translate along the guide rail.

[0013] Furthermore, a flat guide wheel assembly is connected to one end of the bearing bracket opposite to the nose buckle assembly, and the flat guide wheel assembly has two sets of rollers that can fit the two sides of the coil S.

[0014] Furthermore, the nose end buckle assembly includes a buckle base plate connected to the translation mechanism and a support plate connected to the buckle base plate, the support plate is hinged to a flap, a locking seat is connected above the flap, the locking seat is slidably connected to a locking plate, a locking knob is threadedly connected to the locking seat, and the distance between the locking plate and the flap is adjustable to firmly clamp the nose end of the coil S.

[0015] Furthermore, a constant tension mechanism is also connected to the upper part of the upper wrapping ring, the flip frame and the upper support plate, and the constant tension mechanism includes a pressure plate seat hinged at one end of the flip frame, one end of the pressure plate seat is connected to the pressure plate and the other end is a telescopic rod of the first cylinder, and the first cylinder drives the pressure plate seat to swing and drives the pressure plate to swing to adjust the tension.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial effects: the taping method and device proposed by the present invention can maintain the position of the taping head unchanged during the taping process, use the translation of the coil to complete the taping of the straight section of the coil, use the vertical rotation of the taping head to complete the taping of the arc area of ​​the nose end, and use the bearing platform to provide the coil with a stable support force during the entire taping process of the coil, so that the entire taping process has good stability, high taping efficiency, and excellent overlapping rate. The entire taping device does not require the taping head to perform complex trajectory control, which improves the taping efficiency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : Schematic diagram of the steps of the wrapping method; Figure 2 : Schematic diagram of the overall structure of the tape wrapping device; Figure 3 : Schematic diagram of the structure of the belt wrapping device omitting the bearing cover plate and the right bracket; Figure 4 : Schematic diagram of the translation mechanism and the flat guide wheel mechanism structure; Figure 5 : Schematic diagram of the buckle assembly structure; Figure 6 : Structural diagram of the translation mechanism; Figure 7 : Schematic diagram of the overall structure of the taping head; Figure 8 : Schematic diagram of the structure of the bag head flipping open; Fig. 9 : Schematic diagram of the internal structure of the taping head after omitting one side of the bracket plate; Fig.10 : Schematic diagram of the structure of the tape wrapping head omitting the rotating seat assembly; Fig.11 : Structural diagram of the constant tension mechanism of the taping head; Fig.12 : Structural diagram of the transverse movement mechanism; Fig.13 : A schematic structural diagram of the first locking member; Fig.14 : A schematic structural diagram of the second locking member; Fig.15 : Structural diagram of the belt cutting mechanism; Fig.16 : Schematic diagram of handrail structure; Fig.17 : Schematic diagram of coil structure. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] This embodiment provides a method for wrapping a narrow flat coil. Figure 1 As shown, the coil S is placed flat, and the rotation plane of the taping head M is perpendicular to the coil S, so that the length direction of the coil S is perpendicular to the plane of the tape ring 4 of the tape winding head M. The specific steps are as follows: First straight line segment wrapping S1, select one side straight line segment of the coil S as the first straight line segment, use the end point of the first straight line segment as the starting point A1, use the wrapping head M to start rotating wrapping on the first straight line segment, and at the same time start to translate the coil along the first direction from the starting point A1, when the coil translates to reach the end B1 of the first straight line segment, go to the next step; The nose end is wrapped in arc-shaped tape S2, the coil position is maintained unchanged, and the tape head M is rotated with the plane perpendicular to the coil as the axis, so that the tape head M reaches the starting end A2 of the second straight line segment, and the nose end is wrapped in arc-shaped tape; The second straight line segment tape wrapping S3 is performed by rotating and wrapping the second straight line segment from the starting end A2, and the coil is translated along the second direction from the starting end A2, and the entire coil tape wrapping is completed when the coil is translated to reach the end B2 of the second straight line segment; In the above steps, a supporting force is provided to the entire straight section of the coil.

[0020] The above-mentioned taping steps are particularly suitable for narrow and long flat coils. During the entire taping process, the taping head M does not need to follow the trajectory around the coil, but only needs to be maintained at the starting point, and the coil can be taped by simply rotating the nose arc. Therefore, there is no need to perform complex multi-axis trajectory following movements on the taping head, and the control of the entire taping process is simple and effective, with a high fault tolerance rate. Since the taping head does not need to perform complex movements, the coil can have a relatively high translation speed when taping the straight segment, which improves the efficiency of winding the taping, and can effectively improve the efficiency of taping for narrow and long flat coils. In addition, during the entire taping process, the coil translates, and the taping head does not move, so it can provide support force for the entire straight segment. The support force is uninterrupted throughout the entire process, and there is no need to retreat the clamping mechanism of the straight segment to avoid the moving taping head as in the prior art. Therefore, the entire support for the narrow and long flat coil is firm and reliable, and the coil also has good stability during the taping operation. It should be noted that in this embodiment, only the arc-shaped wrapping of the nose end of the coil S is considered, and the arc-shaped area of ​​the nose end at the other end generally needs to be used as a clamping point to push the coil to move horizontally, so manual wrapping can be used. Alternatively, the clamping mechanism of the arc-shaped area of ​​the nose end can be controlled to yield, so that the wrapping head M uses a similar step of wrapping the arc-shaped area of ​​the nose end S2 to complete the wrapping of the arc-shaped area of ​​the nose end at the other end.

[0021] When the arc-shaped area of ​​the nose end of the coil S is taped, the coil S does not move, and the taping head M rotates. In order to simplify the trajectory control of the taping head M during the rotation process, it is preferred that in the step of taping the nose end arc-shaped segment S2, the rotation center of the rotating taping head M coincides with the center of the nose end arc segment, and the rotation radius of the taping head M is equal to the radius of the nose end arc segment. In this way, the taping head M only needs to perform a simple rotation movement, and does not need to perform an arc trajectory movement to ensure that the coil in the nose end arc-shaped area can be maintained at the wrapping rotation center of the taping head M during the entire nose end arc-shaped taping process.

[0022] Since the span of the coil S varies with its model, it is not necessarily possible that the coil S after each clamping can ensure that it passes through the winding rotation center of the taping head M. In order to solve this technical problem, in a more preferred embodiment, when the taping head M is located at the starting point A1 or the end B1 of the first straight segment or the starting end A2 of the second straight segment, the taping head M is translated along the third direction so that the coil always vertically passes through the rotation center of the taping head M. That is, when the coil is wrapped at the first straight segment or the starting end of the second straight segment, the taping head M is translated and fine-tuned along the third direction so that the coil always vertically passes through the winding rotation center of the taping head M. The third direction is perpendicular to the first direction and the second direction and parallel to the plane of the coil S.

[0023] This embodiment also provides a narrow flat coil wrapping device, see Figure 2 and Figure 3 as well as Figure 7 The bearing bracket 7 has a nose buckle assembly 71 installed at one end of the bearing bracket 7, and the nose buckle assembly 71 is connected to the translation mechanism 72. A wrapping head M is also installed on the bearing bracket 7 at the opposite end of the nose buckle assembly 71. After the coil S is placed on the bearing bracket 7, it can be connected to the nose buckle assembly 71 and then reciprocated along a straight line with the translation mechanism 72; The bearing bracket 7 is divided into a left bracket 74 and a right bracket 75. The combined length of the two should be greater than twice the length of the coil S. The upper surface of the left bracket 74 and the right bracket 75 is a bearing cover 76 to provide support for the coil S during the entire translation process to maintain the stability of the coil S. The nose buckle assembly 71 and the translation mechanism 72 are installed at the left end of the left bracket 74, and the tape head M is located in the middle of the left bracket 74 and the right bracket 75. The bearing bracket 7 adopts a frame splicing structure as a whole. The bearing cover 76 on the left bracket 74 is provided with a groove, and the width of the groove is greater than the width of the coil S. The nose buckle assembly 71 is driven to translate in the groove by the translation mechanism 72, thereby driving the coil S to translate.

[0024] like Figure 4 As shown, the translation mechanism 72 uses a synchronous belt 721 as a translation transmission, and specifically includes a translation drive motor 722 and a translation gear set 723. The translation gear set 723 and the synchronous belt 721 engage and drive the nose end buckle assembly 71 connected thereto to translate, thereby driving the coil S to translate.

[0025] like Figure 5As shown, the nose end buckle assembly 71 includes a buckle base plate 711 connected to a translation mechanism 72 and a support plate 712 connected to the buckle base plate 711, the support plate 712 is hinged to a flap 713, a locking seat 714 is connected above the flap 713, a locking plate 715 is slidably connected to the locking seat 714, a locking knob 716 is threadedly connected to the locking seat 714, and the distance between the locking plate 715 and the flap 713 is adjustable to firmly clamp the nose end of the coil S. When the nose end of the coil S needs to be clamped, the flap 713 is first turned up, the coil S is placed on the left bracket 74, the flap 713 is turned down, and the relative positions of the locking plate 715 and the locking seat 714 are slidably adjusted so that the ends of the locking plate 715 and the ends are respectively attached to the two sides of the nose end of the coil S, and then the locking knob 716 is tightened.

[0026] During the translation process of the coil S, one end of the nose is clamped by the nose buckle assembly 71, and the other end is in a relatively free state because it needs to be wrapped. In order to ensure that the coil S can maintain linear motion without deflection and lateral movement during the translation process, in this embodiment, a flat guide wheel assembly 73 is connected to the end of the supporting bracket 7 relative to the nose buckle assembly 71. The flat guide wheel assembly 73 has two sets of rollers 731 that can fit the two sides of the coil S. Specifically, Figure 6 As shown, two groups of rollers 731 are connected to a double-headed screw 732 through a roller seat 733 respectively. The two ends of the double-headed screw 732 are supported and fixed by screw support plates 734. One end of the double-headed screw 732 is a hand wheel 735. Rotating the hand wheel 735 drives the double-headed screw 732 to rotate. The distance between the rollers 731 decreases as the roller seats 733 get closer. When the two groups of rollers 731 are in contact with the coil S, the other nose end side of the coil S can be constrained and guided to prevent the coil S from deflecting and shifting laterally during translation.

[0027] The structure of the tape head M is shown in FIG. Figure 7 to Figure 9 A taping head for an automatic white cloth tape taping machine comprises a rotating seat assembly 1, a taping head lower assembly 2 is mounted on the rotating seat assembly 1, a taping head upper assembly 3 is hingedly connected to one end of the taping head lower assembly 2, and a taping ring 4 is further comprised. The taping ring 4 is divided into an upper taping ring 41 located in the taping head upper assembly 3 and a lower taping ring 42 located in the taping head lower assembly 2. The taping head upper assembly 3 is flipped relative to the taping head lower assembly 2 to open and close the taping ring 4; the rotating seat assembly 1 drives the taping head lower assembly 2 to rotate through a rotary mechanism.

[0028] Since the upper component 3 of the taping head can be flipped relative to the lower component 2 of the taping head to open and close the taping ring 4, it will be very easy to load and unload the coil when taping. When taping, the taping ring 4 is completely closed, and the coil passes through the area S0 in the middle of the taping ring 4. The taping ring 4 can cooperate with the movement of the coil during rotation to wrap the coil. During operation, the closed taping ring 4 can have a better taping speed, and the taping ring 4 can also store more insulating white cloth tape. When the taping head needs to tap the arc area at the end of the coil, the rotating seat component 1 can be used to drive the lower component 2 of the taping head to rotate, thereby driving the entire taping ring 4 to rotate, and the center of the rotation is consistent with the arc area at the end of the coil, so as to ensure that the center of the taping ring 4 always moves along the arc area at the end of the coil when taping. After the upper component 3 of the taping head is flipped relative to the lower component 2 of the taping head, only the taping ring 4 is closed, so one end of the upper taping ring 41 and the lower taping ring 42 can enter the coil span, wrapping the single-sided straight line segment to the area S0 in the middle of the taping ring 4, and then performing a rotational wrapping operation on the straight line segment and the nose end arc segment.

[0029] In a more preferred embodiment, the upper assembly 3 of the taping head includes a flip frame 31, and the lower assembly 2 of the taping head includes a flip seat 21. When the flip frame 31 flips relative to the flip seat 21 with the flip axis 32 as the axis, a first locking member is connected to the flip frame 31 and the flip seat 21 to limit the flipping of the flip frame 31 relative to the flip seat 21. Since a relatively stable closed state needs to be maintained when the strap ring 4 is closed during operation, the upper assembly 3 of the taping head cannot be opened relative to the lower assembly 2 of the taping head due to external factors. Therefore, in this embodiment, a first locking member is provided to limit the flipping of the flip frame 31 relative to the flip seat 21.

[0030] Specifically, Fig.13 and Fig. 9As shown. There is an arcuate adjacent surface 33 between the flip seat 21 and the flip frame 31, and also includes a locking rod 34, which can penetrate the arcuate adjacent surface 33 to limit the flip frame 31 from flipping relative to the flip seat 21. In this embodiment, one end of the flip frame 31 is an arcuate connecting ear, and the flip seat 21 also has an upwardly extending connecting ear, and the flip seat 21 also has an arcuate seat 211 that matches the arcuate connecting ear of the flip frame 31, and the upper surface of the arcuate seat 211 is adjacent to the arcuate connecting ear of the flip frame 31 to form an arcuate adjacent surface 33. After the locking rod 34 penetrates the flip shaft 32 from the top of the flip frame 31, it can continue to extend through the arcuate adjacent surface 33 and then enter the interior of the arcuate seat 211, thereby locking and fixing the flip frame 31 and the flip seat 21 at the hinge axis to prevent the flip frame 31 and the flip seat 21 from flipping and separating during the strapping operation. In this embodiment, one end of the locking rod 34 has a thread, the arc seat 211 has a matching threaded hole, and the other end of the locking rod 34 has a hand wheel 341 for rotating the locking rod 34 to unlock or lock the flip frame 31 and the flip seat 21.

[0031] In the above embodiment, the hinged ends of the flip frame 31 and the flip seat 21 are locked and fixed, which can prevent the flip frame 31 and the flip seat 21 from separating to a certain extent. If the opposite end of the hinged end is further locked and fixed, a more reliable locking effect can be achieved. Therefore, in a more preferred embodiment, a second locking member is further provided at the ends of the upper and lower strap rings 41 and 42 to limit the relative separation of the upper and lower strap rings 41 and 42.

[0032] For details, please refer to Fig.10 , Fig.11 and Fig.14 , one side of the flip frame 31 is connected to an upper support plate 35, the flip seat 21 is connected to the lower support plate 22, one side of the lower support plate 22 is connected to the lower support plate 23, the upper tape ring 41 is located between the upper support plate 35 and the flip frame 31 and both ends are exposed, and the lower tape ring 42 is located between the lower support plate 22 and the lower support plate 23 and both ends are exposed. In this way, after the flip frame 31 is flipped into place relative to the flip seat 21, the upper tape ring 41 and the lower tape ring 42 are closed, but the aforementioned support plates will not be closed and still have a certain distance, so that the present tape head can extend one end of the closed tape ring 4 into the interior of the annular coil, thereby realizing coil tape wrapping with a smaller span. It should be noted that a driving device for driving the tape ring 4 to rotate is installed on the lower support plate 23, which is irrelevant to the innovative point of the present invention and will not be repeated here.

[0033] The locking plate 36 has a pair of ends respectively fixedly connected to the upper support plate 35 and the flip frame plate 31. The locking plate 36 is provided with a locking groove 361. A locking block 24 is provided at one end of the lower support plate 22 and the lower support plate 23. The locking block 24 can be embedded in the locking groove 361 to limit the relative separation of the upper belt wrapping ring 41 and the lower belt wrapping ring 42. In this embodiment, the locking block 24 is connected to a locking cylinder 241, and the locking cylinder 241 is installed on a cylinder seat 242. The cylinder seat 242 is connected to the ends of the lower support plate 22 and the lower support plate 23. Driving the locking cylinder 241 can embed the locking block 24 into the locking groove 361 to lock the upper belt wrapping ring 41 and the lower belt wrapping ring 42.

[0034] In a more preferred embodiment, Fig.11 As shown. A constant tension mechanism 5 is also connected to the upper part of the upper wrapping ring 41, the flip frame 31 and the upper support plate 35. The constant tension mechanism includes a pressure plate seat 51 hinged at one end of the flip frame 31. One end of the pressure plate seat 51 is connected to the pressure plate 52 and the other end is connected to the telescopic rod 54 of the first cylinder 53. The first cylinder 53 drives the pressure plate seat 51 to swing and drives the pressure plate 52 to swing to adjust the tension. During the wrapping operation, the insulating white cloth tape will enter the flip frame 31 from the external material tray and finally enter the wrapping ring 4. If a larger tension is required, the first cylinder 53 can be adjusted to push the pressure plate seat 51 to press the pressure plate 52 downward, thereby compressing the insulating white cloth tape to provide a larger tension, and vice versa.

[0035] In a more preferred embodiment, Fig.12 As shown. Since the span of the coil varies with different models, when taping the arc of the coil end, it is necessary to adjust the lateral position of the taping head to adapt to different models of coils, so that the center of the taping ring 4 and the arc area of ​​the coil end can match. Therefore, the rotating seat assembly 1 includes a rotating base plate 11, a guide rail 12 is installed on the rotating base plate 11, a guide rail mounting plate 13 is installed on the guide rail 12, and the guide rail mounting plate 13 carries the taping head upper assembly 3; a rack 14 is also installed on the guide rail mounting plate 13, and a gear assembly 15 is installed on the rotating base plate 11. The gear assembly 15 and the rack 14 are engaged to drive the guide rail mounting plate to translate along the guide rail 12. The gear assembly 15 includes a driving motor 151, a gear 153 and a motor mounting seat 152. A limit block 16 is also installed on the guide rail mounting plate 13 to limit the translation of the guide rail mounting plate 13.

[0036] In a more preferred embodiment, at least three centering pressure wheels 25 are connected between the upper support plate 35 and the flip frame plate 31 and between the lower support plate 22 and the lower support plate 23, and the outer surface of the centering pressure wheel 25 contacts the outer surface of the upper and lower wrapping rings 41 and 42. In this embodiment, the centering pressure wheel 25 uses its friction and support force to center the upper and lower wrapping rings 41 and 42, so that after flipping and opening and closing, the upper and lower wrapping rings 41 and 42 can still be accurately aligned to form a closed wrapping ring 4. In this embodiment, the centering pressure wheels 25 are preferably distributed symmetrically along the center of the wrapping ring 4, such as Fig. 9 As shown, the four centering pressure wheels 25 are divided into two groups and are respectively located between the upper bracket plate 35 and the turning frame plate 31 and between the lower support plate 22 and the lower bracket plate 23 .

[0037] In a more preferred embodiment, Fig.16 As shown. Since the weight of the upper assembly 3 on the taping head is relatively large, it will be laborious to manually flip open the upper assembly 3 on the taping head. Therefore, an armrest seat 37 is connected to the side of the upper support plate 35 and the flip frame plate 31, and an armrest ring 38 is fixed through the armrest seat 37. A tension spring 26 is also connected between the flip seat 21 and the flip frame plate 31. The taping head assembly 3 can be easily flipped open by the force of the armrest and the tension spring 26.

[0038] In a more preferred embodiment, Fig.15As shown. A band cutting mechanism 6 is also connected to the upper support plate 35 and the flip frame plate 31. The band cutting mechanism 6 includes a band cutting drive unit and a band cutting clamp 61. The band cutting drive unit can drive the band cutting clamp 61 to open and close. Specifically, the band cutting drive unit includes a band cutting cylinder 62, and the free end of the band cutting cylinder 62 is hinged to a scissor swing arm 63. The band cutting clamp 61 is installed on a scissor frame 64, and includes a fixed clamp 611 and an opening and closing clamp 612. The fixed clamp 611 is fixedly connected to the scissor frame 64, and the opening and closing clamp 612 is connected through a band cutting rod 65 that runs through the entire scissor frame 64. The other end of the band cutting rod 65 is connected to the scissor swing arm 63. When the band cutting cylinder 62 is actuated, the scissor swing arm 63 is driven to swing, thereby driving the fixed clamp 611 to move toward the opening and closing clamp 612 and close through the rotation of the band cutting rod 65. In order to make the fixed clamp 611 and the opening and closing clamp 612 have a certain clamping force and one end of the scissors can fit tightly like scissors in the open state, a spring 66 is also connected between the scissor swing arm 63 and the scissor frame 64. The elastic force of the spring can make one end of the opening and closing clamp 612 fit tightly with the fixed clamp 611 and maintain a certain clamping force when the tape is cut and closed. It should be noted that in this embodiment, the tape cutting mechanism 6 should perform the tape cutting action after the first straight segment tape wrapping S1 is completed, because in this embodiment, the material tray device for providing the insulating white cloth tape is fixedly set on the supporting bracket 7. When the first straight segment tape wrapping S1 is completed, the tape wrapping head M will start to rotate. At this time, the insulating white cloth tape should be cut short to prevent the white cloth tape and the tape wrapping head M from pulling. At this time, the fully enclosed tape wrapping head M has certain advantages. It has a higher tape storage capacity and can ensure that the subsequent steps of the nose arc tape wrapping S2 and the second straight segment tape wrapping S3 can complete the tape wrapping operation without using the material tray device to feed.

[0039] Of course, the material tray device can also be set to rotate with the taping head M, but this structure is more complicated and will also cause the rotation radius of the entire rotating device to be too large.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for wrapping a narrow flat coil, characterized in that: The coil S is placed flat on a carrying platform, and the tape head (M) is rotated so that the plane is perpendicular to the coil S, and the following steps are included: The first straight line segment is taped S1. One of the straight line segments of the coil S is selected as the first straight line segment. The end point of the first straight line segment is used as the starting point A1. The first straight line segment is started to be rotated and taped by the taping head (M). At the same time, the coil is moved in a first direction from the starting point A1. When the coil is moved in a direction to reach the end point B1 of the first straight line segment, the next step is entered. The nose end is curved and taped S2. The coil position is maintained unchanged, and the taping head (M) is rotated with the plane perpendicular to the coil as the axis, so that the taping head (M) reaches the starting end A2 of the second straight line segment, and the nose end is curved and taped; The second straight line segment tape wrapping S3 is performed by rotating and wrapping the second straight line segment from the starting end A2, and the coil is translated along the second direction from the starting end A2, and the entire coil tape wrapping is completed when the coil is translated to reach the end B2 of the second straight line segment; In the above steps, the bearing platform provides supporting force for the entire straight section of the coil.

2. The method for wrapping a long and narrow flat coil according to claim 1, characterized in that: In the step of taping the nose end in arcuate shape S2, the rotation center of the rotating taping head (M) coincides with the center of the nose end arcuate segment and the rotation radius of the taping head (M) is equal to the radius of the nose end arcuate segment.

3. The method for wrapping a long and narrow flat coil according to claim 2, characterized in that: When the taping head (M) is located at the starting point A1 or the end B1 of the first straight line segment or the starting end A2 of the second straight line segment, the taping head (M) is translated along the third direction so that the coil S always vertically passes through the winding rotation center of the taping head (M).

4. A narrow flat coil taping device, characterized in that: The invention comprises a bearing bracket (7), a nose-end buckle assembly (71) is mounted on one end of the bearing bracket (7), the nose-end buckle assembly (71) is connected to a translation mechanism (72), a tape head (M) is also mounted on the bearing bracket (7) at the opposite end of the nose-end buckle assembly (71), and a coil S is placed on the bearing bracket (7) and can be connected to the nose-end buckle assembly (71) and then reciprocated along a straight line with the translation mechanism (72); The taping head (M) comprises a rotating seat assembly (1), a taping head lower assembly (2) is mounted on the rotating seat assembly (1), a taping head upper assembly (3) is hingedly connected to one end of the taping head lower assembly (2), and further comprises a taping ring (4), the taping ring (4) being divided into an upper taping ring (41) located in the taping head upper assembly (3) and a lower taping ring (42) located in the taping head lower assembly (2), the taping head upper assembly (3) being flipped relative to the taping head lower assembly (2) to open and close the taping ring (4); the rotating seat assembly (1) drives the taping head lower assembly (2) to rotate via a rotating mechanism.

5. The elongated flat coil taping device according to claim 4, characterized in that: The upper taping head component (3) comprises a flip frame (31), and the lower taping head component (2) comprises a flip seat (21). The flip frame (31) flips relative to the flip seat (21) about a flip axis (32). An arcuate adjacent surface (33) is provided between the flip seat (21) and the flip frame (31). The locking rod (34) can penetrate the arcuate adjacent surface (33) and is used to limit the flipping of the flip frame (31) relative to the flip seat (21).

6. The elongated flat coil taping device according to claim 5, characterized in that: The flip frame plate (31) is connected to an upper support plate (35) on one side, the flip seat (21) is connected to a lower support plate (22), and the lower support plate (22) is connected to a lower support plate (23) on one side. The upper belt wrapping ring (41) is located between the upper support plate (35) and the flip frame plate (31) with both ends exposed, and the lower belt wrapping ring (42) is located between the lower support plate (22) and the lower support plate (23) with both ends exposed. A locking plate (36) is connected to one end of the upper support plate (35) and the flip frame plate (31) relative to the flip axis (32), and a locking groove (361) is provided on the locking plate (36). A locking block (24) is provided at one end of the lower support plate (22) and the lower support plate (23), and the locking block (24) can be embedded in the locking groove (361) to limit the upper belt wrapping ring (41) and the lower belt wrapping ring (42) from being relatively separated.

7. The elongated flat coil taping device according to claim 4, characterized in that: The rotating seat assembly (1) comprises a rotating base plate (11), a guide rail (12) is mounted on the rotating base plate (11), a guide rail mounting plate (13) is mounted on the guide rail (12), and the guide rail mounting plate (13) carries the taping head upper assembly (3); a rack (14) is also mounted on the guide rail mounting plate (13), and a gear assembly (15) is mounted on the rotating base plate (11), and the gear assembly (15) and the rack (14) mesh to drive the guide rail mounting plate to translate along the guide rail (12).

8. The elongated flat coil taping device according to claim 4, characterized in that: A flat guide wheel assembly (73) is also connected to one end of the bearing bracket (7) opposite to the nose buckle assembly (71). The flat guide wheel assembly (73) has two sets of rollers (731) that can fit the two sides of the coil S.

9. The elongated flat coil taping device according to claim 4, characterized in that: The nose end buckle assembly (71) comprises a buckle base plate (711) connected to a translation mechanism (72) and a support plate (712) connected to the buckle base plate (711); the support plate (712) is hingedly connected to a flap (713); a locking seat (714) is connected above the flap (713); a locking plate (715) is slidably connected to the locking seat (714); a locking knob (716) is threadedly connected to the locking seat (714); and the spacing between the locking plate (715) and the flap (713) is adjustable so as to firmly clamp the nose end of the coil S.

10. The elongated flat coil taping device according to claim 6, characterized in that: A constant tension mechanism (5) is also connected to the upper portion of the upper wrapping ring (41), the flip frame (31) and the upper support plate (35), the constant tension mechanism comprising a pressure plate seat (51) hinged at one end of the flip frame (31), one end of the pressure plate seat (51) being connected to a pressure plate (52) and the other end of a telescopic rod (54) of a first cylinder (53), the first cylinder (53) driving the pressure plate seat (51) to swing and driving the pressure plate (52) to swing to adjust the tension.

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