A preparation process for a high-strength elastic electrical insulating tape

Abstract

The application provides a preparation process of high-strength elastic electrical insulating adhesive tape, the insulating adhesive tape comprises a base layer and a glue layer, the glue layer comprises the following raw materials in parts by weight: rosin resin 30-60 parts, shellac resin 40-50 parts, polyurethane resin 40-60 parts, butyl rubber 63-85 parts, cis-butadiene rubber 35-40 parts, diaminodiphenyl sulfone 2-4 parts, nano ceramic powder 3-5 parts, carbon black 1-2 parts, flame retardant 2-4 parts and plasticizer 1-2 parts; the preparation method of the insulating adhesive tape is as follows: mixing rosin resin, polyurethane resin and butyl rubber to obtain a first mixture, mixing the first mixture to obtain a first mixing product, mixing shellac resin, cis-butadiene rubber and nano ceramic powder to obtain a second mixture, mixing the second mixture to obtain a second mixing product, finally mixing the first mixing product and the second mixing product to perform re-mixing, and adding diaminodiphenyl sulfone, carbon black, flame retardant and plasticizer at the same time, so that the insulating adhesive tape prepared finally has good toughness, is not easy to break and can bear a larger external force, and the safety performance of the product is improved.

Description

Technical Field

[0001] This invention relates to the field of tape technology, and in particular to a preparation process for a high-strength elastic electrical insulating tape. Background Technology

[0002] Insulating tape is a special type of tape that isolates power sources and prevents leakage. It is used for fixing and protecting electrical equipment, electrical instruments, high and low voltage switchgear, and other electrical products, as well as for protecting wires and cables. The functions of insulating tape include: 1. Preventing electric shock to construction workers: Insulating tape is commonly used in electrical work because workers frequently come into contact with live wires. To ensure that workers are not electrocuted during construction, insulating tape is essential. 2. Protecting circuits: Insulating tape is generally wrapped around circuit joints and other areas where protection is needed, protecting the circuit. Joints are the most vulnerable parts of the circuit; using insulating tape prevents these joints from being exposed, reducing the probability of them being damaged by wind and rain. 3. Fire retardant and flame retardant: Insulating tape is fire retardant, does not easily peel off, and does not misalign. When the tape is wrapped around a joint, it will not melt even when the joint heats up, thus preventing leakage.

[0003] Existing insulating tapes generally consist of a base material and an adhesive layer. The base material is typically made of materials such as cotton cloth, synthetic fiber fabric, or plastic film, all of which are insulating and non-conductive. The adhesive layer is usually made of rubber and tackifying resin, with added additives to enhance its adhesion. However, existing insulating tapes have low strength and limited toughness, making them prone to breakage under significant stress, resulting in poor protective performance. Summary of the Invention

[0004] The purpose of this invention is to propose a manufacturing process for high-strength elastic electrical insulating tape, which solves the technical problems of low strength and poor toughness of existing insulating tapes.

[0005] This invention provides a process for preparing a high-strength elastic electrical insulating tape. The insulating tape includes a base layer and an adhesive layer, wherein the adhesive layer comprises the following raw materials in parts by weight:

[0006] Rosin resin 30-60 parts, shellac resin 40-50 parts, polyurethane resin 40-60 parts, butyl rubber 63-85 parts, cis-butadiene rubber 35-40 parts, diaminodiphenyl sulfone 2-4 parts, nano-ceramic powder 3-5 parts, carbon black 1-2 parts, flame retardant 2-4 parts, plasticizer 1-2 parts.

[0007] The method for preparing the adhesive layer includes the following steps:

[0008] Step 1: Mix 30-60 parts of the rosin resin, 40-60 parts of the polyurethane resin, and 63-85 parts of the butyl rubber evenly to obtain a first mixture;

[0009] Step 2: Mix 40-50 parts of shellac resin, 35-40 parts of butadiene rubber, and 3-5 parts of nano-ceramic powder evenly to obtain a second mixture;

[0010] Step 3: Mix the first mixture at a temperature of 165-185°C for 45-55 minutes. The result of the mixing is the first mixed product.

[0011] The second mixture is kneaded at a temperature of 140–155°C for 30–40 min, and the resulting product is the second kneaded product.

[0012] Step 4: Mix the first compound product and the second compound product and then remelt them. At the same time, add 2-4 parts of the diaminodiphenyl sulfone, 1-2 parts of the carbon black, 2-4 parts of the flame retardant, and 1-2 parts of the plasticizer. The remelting temperature is 110-130℃ to obtain a semi-finished product.

[0013] Step 5: Extrude the semi-finished product obtained from the remelting process to obtain a film, dry the film, attach the base layer to the adhesive surface of the film, and wind it up using a winding mechanism to obtain an insulating tape.

[0014] The preparation process of the high-strength elastic electrical insulating tape proposed in this invention has the following beneficial effects: Under the combined action of natural resin, synthetic resin and other raw materials, the insulating tape produced by this invention has good toughness and is not easy to break. It can withstand greater external forces, improve the safety performance of the product, and at the same time improve its service life.

[0015] The insulating tape preparation method provided by this invention involves separately mixing natural resin and synthetic resin, and then re-mixing the products of each mixture. This results in a tape with good toughness, that is not easily broken, and that can withstand greater external forces, thereby improving the safety performance of the product and extending its service life.

[0016] In addition, the preparation process of the high-strength elastic electrical insulating tape provided by the present invention may also have the following additional technical features:

[0017] The adhesive layer comprises the following raw materials in parts by weight:

[0018] 30 parts rosin resin, 40 parts shellac resin, 40 parts polyurethane resin, 63 parts butyl rubber, 35 parts cis-butadiene rubber, 2 parts diaminodiphenyl sulfone, 3 parts nano-ceramic powder, 1 part carbon black, 2 parts flame retardant, and 1 part plasticizer.

[0019] The adhesive layer comprises the following raw materials in parts by weight:

[0020] 40 parts rosin resin, 45 parts shellac resin, 50 parts polyurethane resin, 70 parts butyl rubber, 37 parts cis-butadiene rubber, 3 parts diaminodiphenyl sulfone, 4 parts nano-ceramic powder, 1.5 parts carbon black, 3 parts flame retardant, and 1.5 parts plasticizer.

[0021] The adhesive layer comprises the following raw materials in parts by weight:

[0022] 60 parts rosin resin, 50 parts shellac resin, 60 parts polyurethane resin, 85 parts butyl rubber, 40 parts cis-butadiene rubber, 4 parts diaminodiphenyl sulfone, 5 parts nano-ceramic powder, 2 parts carbon black, 4 parts flame retardant, and 2 parts plasticizer.

[0023] The method for preparing the adhesive layer includes the following steps:

[0024] Step 1: Mix 30 parts of the rosin resin, 40 parts of the polyurethane resin, and 63 parts of the butyl rubber evenly to obtain a first mixture;

[0025] Step 2: Mix 40 parts of shellac resin, 35 parts of butadiene rubber, and 3 parts of nano-ceramic powder evenly to obtain a second mixture;

[0026] Step 3: Mix the first mixture at a temperature of 165°C for 45 min. The resulting product is the first mixed product.

[0027] The second mixture is kneaded at a temperature of 140°C for 30 minutes to obtain the second kneaded product.

[0028] Step 4: Mix the first compound product and the second compound product and then remelt them. At the same time, add 2 parts of the diaminodiphenyl sulfone, 1 part of the carbon black, 2 parts of the flame retardant and 1 part of the plasticizer. The remelting temperature is 110°C to obtain a semi-finished product.

[0029] Step 5: Extrude the semi-finished product obtained from the remelting process to obtain a film, dry the film, attach the base layer to the adhesive surface of the film, and wind it up using a winding mechanism to obtain an insulating tape.

[0030] The winding mechanism includes a central rotating roller that can be rotated in a stepwise manner and multiple sets of uniformly divergent support rods detachably fixed to the outer circumference of the central rotating roller along its length. A winding roller is detachably and rotatably fixed to the end of each support rod set. A paper tape ring is detachably sleeved on the outer circumference of the winding roller. Multiple cutting mechanisms are also arranged in a divergent pattern between adjacent support rod sets. Each cutting mechanism includes a flat first cavity. The bottom end of the first cavity is detachably fixed to the outer circumference of the central rotating roller along its length, and the outer end of the first cavity is open. A blade is inserted into the first cavity along its outer end and slides in a sealed manner with the first cavity. Multiple return springs connect the blade to the first cavity. The first cavity encloses... The device includes a sealed second cavity; a piston extends from the bottom of the blade; the piston is in a sealed sliding fit with the second cavity; a pump pipe extends into the second cavity from the outside to pump air into the second cavity; suction slits are respectively opened on the front and rear sides of the first cavity; suction slits are connected to suction ports; the suction ports are respectively oriented towards the tangent direction of the adjacent finished tape rolls; the extension stroke of the blade is greater than the stroke required to cut the tape; at least one end of the first mandrel of the take-up roller extends outward with a support rod assembly, and the outer circumferential surface of the extended part is provided with gear teeth along the circumferential direction; a gear is also fixedly installed at the take-up position; the gear is located outside the tangent of the circular trajectory of the first mandrel revolving around the central roller and just meshes with the gear when the first mandrel is in the take-up position.

[0031] The winding position is located on the right side of the center roller in the vertical direction, and the deflection angle ensures that the tape will not touch the unextended blade when it starts winding.

[0032] The central rotating roller includes a second mandrel and a detachable, rotatable intermediate sleeve sleeved outside the second mandrel; the support rod assembly includes a right rod and a left rod; bearings are fixed to the outer ends of the right rod and the left rod respectively; a hydraulic or electric telescopic rod is connected between the right rod and the left rod to adjust the distance between them; the left rod is fixed in position, and one end of the first mandrel with gear teeth is supported by the left rod; a dovetail groove is formed on the outer circumference of the intermediate sleeve along its length; the bottom ends of the right rod, the left rod, and the first cavity are respectively provided with sliding keys that can be inserted into the dovetail groove.

[0033] The gear is driven to rotate by a first servo motor; the second spindle is driven to rotate by a second servo motor.

[0034] The winding method of the winding mechanism includes the following steps:

[0035] ① At the winding position, the first servo motor drives the gear to rotate, the gear drives the meshing first mandrel to rotate, thereby driving the winding roller and the tape paper ring to rotate, thereby winding the tape until the size of the formed tape roll meets the requirements, and the first servo motor stops.

[0036] ② Simultaneously with the first servo motor stopping, the second servo motor drives the second mandrel to rotate in a stepwise manner along the tape winding direction, causing the winding roller that has completed winding to revolve to the cutting position. The angle between this position and the winding position is exactly equal to the angle between two adjacent sets of support rods, thereby placing the adjacent winding roller in the winding position. During the rotation of the winding roller that has completed winding, the tape is supported by the adjacent winding roller that has not yet started winding, located above it. The linear velocity of the winding roller that has completed winding revolving around the second mandrel is exactly equal to the moving speed of the tape, thus ensuring the continuity of tape production. When the winding roller that has completed winding leaves the winding position, the first mandrel disengages from the gear. When the adjacent winding roller that has not yet started winding revolves to the winding position, its first mandrel engages with the gear. Therefore, the aforementioned first servo motor can also be selected to keep the gear rotating from beginning to end.

[0037] ③ While step ② is being performed, pressurized air is pumped into the second cavity, which is located between the winding position and the cutting position, through the air pump pipe. This pushes the piston body to move outward, thereby pushing the blade to extend. When the winding roller that has finished winding just reaches the cutting position, the blade contacts and cuts the tape, which is being held together by the unwound winding roller at the winding position and the completed winding roller at the cutting position.

[0038] ④ After the blade cuts the tape, it continues to extend outward. As the volume of the first cavity increases continuously during the outward movement of the blade, a huge negative pressure is formed in a short time. External air is drawn into the first cavity through the suction port and the suction slit, causing the two short pieces of tape that have been cut by the blade to move towards the second mandrel under the suction of the negative pressure. This allows the two ends of the tape to adhere smoothly to the tape paper loop at the current winding position and the tape roll at the current cutting position, respectively. When the blade extends to its limit, the gas in the second cavity is released, and the blade returns to its initial position under the restoring action of the return spring.

[0039] ⑤ At the same time the blade cuts the tape, the first servo motor corresponding to the take-up roller at the take-up position drives the take-up roller at that position to rotate, thereby starting a new take-up.

[0040] ⑥ During the winding process of the take-up roller in step ⑤, the operator controls the hydraulic or electric telescopic rod on the support rod group corresponding to the completed take-up roller to push the right rod outward, thereby causing the take-up roller on it to disengage from the support and limit of the support rod group and be removed by the operator; then the operator installs a new take-up roller on the left rod, raises the take-up roller horizontally, and controls the hydraulic or electric telescopic rod to pull the right rod back, so that the other end of the take-up roller is also inserted into the bearing on the right rod; this step is completed before the take-up roller at this winding position completes winding.

[0041] ⑦ Repeat steps ① to ⑥ to perform the tape winding operation without interruption.

[0042] The beneficial effects of this invention are:

[0043] 1. The insulating tape adhesive layer of the present invention, under the combined action of natural resin, synthetic resin and other raw materials, produces an insulating tape with good toughness and is not easy to break. It can withstand greater external forces, improve the safety performance of the product, and at the same time increase its service life.

[0044] 2. The insulating tape preparation method provided by the present invention involves separately mixing natural resin and synthetic resin, and then re-mixing the products of each mixture, so that the resulting tape has good toughness, is not easy to break, can withstand greater external forces, improves the safety performance of the product, and also increases its service life.

[0045] 3. The winding mechanism of this invention can achieve seamless switching between different winding rollers and continuous winding without manual adhesion. In contrast, in the prior art, when changing winding rollers after one roll of tape is wound, manual alignment and adhesion are generally required, and sometimes the equipment needs to be paused, which not only increases the workload of workers but also restricts production efficiency. The winding mechanism of this application combines the revolution of multiple winding rollers and the rotation of a single winding roller. After the winding roller at the winding position has finished winding, the synchronous revolution of each winding roller is used to switch the winding roller that has completed the winding operation to the... By cutting off the unwound take-up roller and switching it to the take-up position, the system achieves contact between the unwound take-up roller and the conveyor belt by utilizing the change in position and the continuity of the conveyor belt. Furthermore, the linear velocity of this revolution compensates for the feed motion of the conveyor belt, ensuring continuous belt feed even after the completed take-up roller stops rotating, thus preventing accumulation. Additionally, it provides operators with the time and space to remove the completed take-up roller and reposition the unwound take-up roller. Therefore, it cleverly, stably, and efficiently enables uninterrupted continuous winding of multiple take-up rollers.

[0046] 4. This invention incorporates a specially designed cutting mechanism. As the blade extends to cut the tape, the negative pressure generated in the first cavity simultaneously achieves an adsorption effect. This allows the two ends of the cut tape to smoothly adhere to the tape paper loop at the current winding position and the tape roll at the current cutting position under the negative pressure adsorption. This ensures smooth and fast cutting, maintains the integrity of the tape roll's appearance without the need for subsequent manual correction, and maximizes the adhesion area and force of the tape on the tape paper loop at the winding position, preventing the tape from detaching from the tape paper loop at the start of winding.

[0047] 5. The gear of the present invention is located outside the tangent of the circular trajectory of the first mandrel revolving around the central roller and meshes with the gear when the first mandrel is in the winding position. Therefore, its position does not need to change, and it can automatically mesh and automatically contact the winding position and non-winding position by changing the revolution position of the winding roller. This design perfectly matches the action requirements of the winding mechanism of this application, and cleverly realizes the rotational winding of the winding roller in the winding position and the static non-rotation of the winding position. Moreover, this action just matches the revolution action of each winding roller and the cutting action of the cutting mechanism. The various mechanisms are cleverly linked with the process design, and the various mechanisms interact and cooperate cleverly, and are closely integrated with the process. Without any one of the mechanisms, the infinite continuous winding process of this application cannot be realized. Attached Figure Description

[0048] Figure 1 This is a process flow diagram of the present invention;

[0049] Figure 2 This is a schematic diagram of the winding mechanism at the beginning of winding.

[0050] Figure 3 A schematic diagram showing the winding roller at the winding position of the winding mechanism completing winding;

[0051] Figure 4 This is a schematic diagram of the winding roller in the winding mechanism revolving to the cutting position after completing winding;

[0052] Figure 5 This is a diagram showing the tape being cut between the winding position and the cutting position.

[0053] Figure 6 This is a schematic diagram showing the process of removing the winding roller after it has finished winding.

[0054] Figure 7 This is a diagram illustrating the process of replacing a new take-up roller.

[0055] Figure 8 A schematic diagram of a structure that rotates around a central point;

[0056] Figure 9 for Figure 2 Schematic diagram of the cross section of AA;

[0057] Figure 10 This is a diagram showing the blade extending and touching the tape, about to cut it.

[0058] Figure 11 This is a schematic diagram showing the blade when it is stretched to its limit.

[0059] Figure 12 This is a schematic diagram of the ring-shaped dividing device;

[0060] Figure 13 for Figure 12 Enlarged view of the area within the middle circle;

[0061] Figure 14 This is a schematic diagram of the coating device.

[0062] Figure 15 for Figure 14 Enlarged diagram of the area circled in the middle.

[0063] 3. Rewinding mechanism; 31. Center roller; 311. Second mandrel; 312. Intermediate sleeve; 313. Dovetail groove; 314. Second servo motor; 32. Support rod assembly; 321. Right rod; 322. Left rod; 323. Bearing; 324. Hydraulic or electric telescopic rod; 325. Slide key; 33. Rewinding roller; 331. First mandrel; 332. Gear; 333. First servo motor; 34. Tape roll; 35. Cutting mechanism; 351. First cavity; 352. Blade; 353. Return spring; 354. Second cavity; 355. Piston body; 356. Pump pipe; 357. Suction slit; 358. Suction slit opening; 359. Tape roll. Detailed Implementation

[0064] To make the objectives, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the description. In these descriptions, specific embodiments of the present invention are specifically disclosed to illustrate some ways of implementing the principles of the embodiments of the present invention; however, it should be understood that the scope of the embodiments of the present invention is not limited thereto. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0065] See Figure 1 ,

[0066] Example 1

[0067] A process for preparing a high-strength elastic electrical insulating tape, wherein the insulating tape comprises a base layer and an adhesive layer, and the adhesive layer comprises the following raw materials in parts by weight:

[0068] 30 parts rosin resin, 40 parts shellac resin, 40 parts polyurethane resin, 63 parts butyl rubber, 35 parts cis-butadiene rubber, 2 parts diaminodiphenyl sulfone, 3 parts nano-ceramic powder, 1 part carbon black, 2 parts flame retardant, and 1 part plasticizer.

[0069] The method for preparing the adhesive layer includes the following steps:

[0070] Step 1: Mix 30 parts of the rosin resin, 40 parts of the polyurethane resin, and 63 parts of the butyl rubber evenly to obtain a first mixture;

[0071] Step 2: Mix 40 parts of shellac resin, 35 parts of butadiene rubber, and 3 parts of nano-ceramic powder evenly to obtain a second mixture;

[0072] Step 3: Mix the first mixture at a temperature of 165°C for 45 min. The resulting product is the first mixed product.

[0073] The second mixture is kneaded at a temperature of 140°C for 30 minutes to obtain the second kneaded product.

[0074] Step 4: Mix the first compound product and the second compound product and then remelt them. At the same time, add 2 parts of the diaminodiphenyl sulfone, 1 part of the carbon black, 2 parts of the flame retardant and 1 part of the plasticizer. The remelting temperature is 110°C to obtain a semi-finished product.

[0075] Step 5: Extrude the semi-finished product obtained from the remelting to obtain a film, dry the film, attach the base layer to the adhesive surface of the film, and wind it up by the winding mechanism 3 to obtain the insulating tape.

[0076] Example 2

[0077] A process for preparing a high-strength elastic electrical insulating tape, wherein the insulating tape comprises a base layer and an adhesive layer, and the adhesive layer comprises the following raw materials in parts by weight:

[0078] 40 parts rosin resin, 45 parts shellac resin, 50 parts polyurethane resin, 70 parts butyl rubber, 38 parts cis-butadiene rubber, 3 parts diaminodiphenyl sulfone, 4 parts nano-ceramic powder, 1.5 parts carbon black, 3 parts flame retardant, and 1.5 parts plasticizer.

[0079] The method for preparing the adhesive layer includes the following steps:

[0080] Step 1: Mix 40 parts of the rosin resin, 50 parts of the polyurethane resin, and 70 parts of the butyl rubber evenly to obtain a first mixture;

[0081] Step 2: Mix 45 parts of shellac resin, 38 parts of butadiene rubber, and 4 parts of nano-ceramic powder evenly to obtain a second mixture;

[0082] Step 3: Mix the first mixture at a temperature of 170°C for 50 minutes. The resulting product is the first mixed product.

[0083] The second mixture is kneaded at a temperature of 150°C for 35 minutes to obtain the second kneaded product.

[0084] Step 4: Mix the first compound product and the second compound product and then remelt them. At the same time, add 3 parts of the diaminodiphenyl sulfone, 1.5 parts of the carbon black, 3 parts of the flame retardant and 1.5 parts of the plasticizer. The remelting temperature is 120°C to obtain a semi-finished product.

[0085] Step 5: Extrude the semi-finished product obtained from the remelting to obtain a film, dry the film, attach the base layer to the adhesive surface of the film, and wind it up by the winding mechanism 3 to obtain the insulating tape.

[0086] Example 3

[0087] A process for preparing a high-strength elastic electrical insulating tape, wherein the insulating tape comprises a base layer and an adhesive layer, and the adhesive layer comprises the following raw materials in parts by weight:

[0088] 60 parts rosin resin, 50 parts shellac resin, 60 parts polyurethane resin, 85 parts butyl rubber, 40 parts cis-butadiene rubber, 4 parts diaminodiphenyl sulfone, 5 parts nano-ceramic powder, 2 parts carbon black, 4 parts flame retardant, and 2 parts plasticizer.

[0089] The method for preparing the adhesive layer includes the following steps:

[0090] Step 1: Mix 60 parts of the rosin resin, 60 parts of the polyurethane resin, and 85 parts of the butyl rubber evenly to obtain a first mixture;

[0091] Step 2: Mix 50 parts of shellac resin, 40 parts of butadiene rubber, and 5 parts of nano-ceramic powder evenly to obtain a second mixture;

[0092] Step 3: Mix the first mixture at a temperature of 185°C for 55 min. The resulting product is the first mixed product.

[0093] The second mixture is kneaded at a temperature of 155°C for 40 min to obtain the second kneaded product.

[0094] Step 4: Mix the first compound product and the second compound product and then remelt them. At the same time, add 4 parts of the diaminodiphenyl sulfone, 2 parts of the carbon black, 4 parts of the flame retardant and 2 parts of the plasticizer. The remelting temperature is 130°C to obtain a semi-finished product.

[0095] Step 5: Extrude the semi-finished product obtained from the remelting to obtain a film, dry the film, attach the base layer to the adhesive surface of the film, and wind it up by the winding mechanism 3 to obtain the insulating tape.

[0096] For the above embodiments, see further... Figures 2 to 11 The winding mechanism 3 includes a central rotating roller 31 that can rotate in a stepwise manner and multiple sets of uniformly divergent support rods 32 that are detachably fixed to the outer circumference of the central rotating roller 31 along its length. A winding roller 33 is detachably and rotatably fixed to the end of each support rod set 32. A tape paper ring 34 is detachably sleeved on the outer circumference of the winding roller 33. Multiple cutting mechanisms 35 are also arranged in a divergent shape between adjacent support rod sets 32. Each cutting mechanism 35 includes a flat first cavity 351. The bottom end of the first cavity 351 is detachably fixed to the outer circumference of the central rotating roller 31 along its length, and the outer end of the first cavity 351 is an open end. A blade 352 is inserted into the first cavity 351 along its bottom end and slides in a sealed manner with the first cavity 351. Multiple return springs 353 are connected between the blade 352 and the first cavity 351. A sealed second... The first cavity 354 has a piston body 355 extending from the bottom of the blade 352. The piston body 355 is in a sealed sliding fit with the second cavity 354. An air pump pipe 356 extends into the second cavity 354 from the outside to pump air into the second cavity 354. Suction slits 357 are respectively opened on the front and rear sides of the first cavity 351. Suction slits 357 are connected to suction ports 358. Suction ports 358 are respectively oriented towards the tangent direction of the adjacent finished tape roll 359. The extension stroke of the blade 352 is greater than the stroke required to cut the tape. At least one end of the first spindle 331 of the take-up roller 33 extends outward with a support rod assembly 32. The outer circumferential surface of the extended part is provided with gear teeth along the circumferential direction. A gear 332 is also fixedly installed at the take-up position. The gear 332 is located outside the tangent of the circular trajectory of the first spindle 331 revolving around the central roller 31 and meshes with the gear 332 when the first spindle 331 is in the take-up position.

[0097] Furthermore, the winding position is located on the right side of the center roller 31 in the vertical direction, and the deflection angle is such that the tape will not touch the unextended blade 352 when it starts winding.

[0098] Furthermore, the central rotating roller 31 includes a second spindle 311 and an intermediate sleeve 312 that is detachably and rotatably sleeved outside the second spindle 311; the support rod assembly 32 includes a right rod 321 and a left rod 322; bearings 323 are fixed to the outer ends of the right rod 321 and the left rod 322 respectively; a hydraulic or electric telescopic rod 324 is connected between the right rod 321 and the left rod 322 to adjust the distance between the right rod 321 and the left rod 322; the left rod 322 is fixed in position, and one end of the first spindle 331 with gear teeth is supported by the left rod 322; a dovetail groove 313 is provided on the outer circumference of the intermediate sleeve 312 along its length direction; the bottom ends of the right rod 321, the left rod 322 and the first cavity 351 are respectively provided with sliding keys 325 that can be inserted into the dovetail groove 313.

[0099] Furthermore, gear 332 is driven to rotate by first servo motor 333; second spindle 311 is driven to rotate by second servo motor 314.

[0100] The winding method of this winding mechanism includes the following steps:

[0101] ①See Figure 2 , 3 At the winding position, the first servo motor 333 drives the gear 332 to rotate, and the gear 332 drives the meshing first spindle 331 to rotate, thereby driving the winding roller 33 and the tape paper ring 34 to rotate, thereby winding the tape until the size of the formed tape roll 359 reaches the requirement, and the first servo motor 333 stops.

[0102] ②See also Figure 4 As the first servo motor 333 stops, the second servo motor 314 drives the second spindle 311 to rotate stepwise along the tape winding direction, causing the winding roller 33 that has completed winding to revolve to the cutting position. The angle between this position and the winding position is exactly equal to the angle between the two adjacent sets of support rods 32, thereby placing the adjacent winding roller 33 in the winding position. During the rotation of the winding roller 33 that has completed winding, the tape is supported by the adjacent winding roller 33 that has not yet started winding. The linear velocity of the winding roller 33 that has completed winding around the second spindle 311 is exactly equal to the moving speed of the tape, thereby ensuring the continuity of tape production. When the winding roller 33 that has completed winding leaves the winding position, the first spindle 311 disengages from the gear 332. When the adjacent winding roller 33 that has not yet started winding revolve to the winding position, its first spindle 311 engages with the gear 332.

[0103] ③See Figure 4 and 10While step ② is being performed, pressurized air is pumped into the second cavity 354, which is located between the winding position and the cutting position, through the air pump pipe 356. This pushes the piston body 355 to move outward, thereby pushing the blade 352 to extend. When the winding roller 33 that has finished winding just reaches the cutting position, the blade 352 contacts and cuts the tape, which is being held together by the unwound winding roller 33 at the winding position and the completed winding roller 33 at the cutting position.

[0104] ④See Figure 5 and 11 After the blade 352 cuts the tape, it continues to extend outward. As the volume of the first cavity 351 increases continuously during the outward movement of the blade 352, a huge negative pressure is formed in a short time. External air is drawn into the first cavity 351 through the suction port 358 and the suction slit 357, causing the two short pieces of tape that have been cut by the blade 352 to move towards the second spindle 311 under the negative pressure adsorption. This allows the two ends of the tape to adhere smoothly to the tape paper loop 34 at the current winding position and the tape roll 359 at the current cutting position, respectively. When the blade 352 extends to its limit, the gas in the second cavity 354 is released, and the blade 352 returns to its initial position under the restoring action of the return spring 353.

[0105] ⑤ See Figure 6 and 7 As the blade 352 cuts the tape, the first servo motor 333 corresponding to the take-up roller 33 at the take-up position drives the take-up roller 33 at that position to rotate, thereby starting a new take-up.

[0106] ⑥See Figure 6 and 7 In step ⑤, during the winding process of the take-up roller 33, the operator controls the hydraulic or electric telescopic rod 324 on the support rod group 32 corresponding to the completed take-up roller 33 to push the right rod 321 outward, thereby causing the take-up roller 33 on it to disengage from the support and limit of the support rod group 32 and be removed by the operator; then the operator installs a new take-up roller 33 on the left rod 322, raises the take-up roller 33 horizontally, and controls the hydraulic or electric telescopic rod 324 to pull the right rod 321 back, so that the other end of the take-up roller 33 is also inserted into the bearing 323 on the right rod 321; this step is completed before the take-up roller 33 at this winding position completes winding.

[0107] ⑦ Repeat steps ① to ⑥ to perform the tape winding operation without interruption.

[0108] Furthermore, see Figures 12 to 15 ,in, Figure 12 This is a schematic diagram of the ring-shaped dividing device; Figure 13 for Figure 12 Enlarged view of the area within the middle circle; Figure 14This is a schematic diagram of the coating device. Figure 15 for Figure 14 Enlarged diagram of the area circled in the middle.

[0109] For the film in step 5, it is extruded into a cylindrical film 5 using an annular extruder, and then directly divided into multiple film segments 6 of a preset width by an annular dividing device 1 for winding; the annular dividing device includes multiple sets of guide cutting rollers 11 arranged in regular polygons; a ball 12 is provided between two adjacent guide cutting rollers 11; the ball 12 is used to guide the cylindrical film 5; the guide cutting rollers 11 include a first roller 13 and a second roller 14 arranged relatively parallel to each other; the cylindrical film 5 passes through the gap between the first roller 13 and the second roller 14 and is squeezed and guided by the first roller 13 and the second roller 14; the first roller 13... At least one annular blade 15 is provided along the outer circumference of the film; the second roller 14 has an annular groove 16 on the outer circumference of the annular blade 15; the annular blade 15 and the annular groove 16 cooperate to cut the cylindrical film 5 into film segments 6; a flattening roller 2 is also provided behind the annular dividing device 1, corresponding to the film segments 6 respectively; further, the flattening roller 2 corresponding to the film segments 6 located at the corners of the regular polygons is a concave-convex arc surface roller; the curvature of the concave-convex arc surface roller is more gradual than the curvature of the film segments 6 at the corners of the regular polygons for a transition; a winding mechanism 3 is provided behind the flattening roller 2, corresponding to the flattening roller 2 respectively.

[0110] Furthermore, a coating device 4 is also provided between the leveling roller 2 and the winding mechanism 3. The coating device 4 includes a rectangular upper seat 41 and a lower seat 42. The upper surface of the lower seat 42 is a smooth plane to support the sliding of the film segment 6. A V-shaped glue reservoir 43 is provided in the middle of the upper seat 41. Deformable glue guiding elements 44 are respectively provided on the front and rear sides of the bottom of the V-shaped glue reservoir 43. There is a gap between the lower parts of the two deformable glue guiding elements 44 so that the glue can be left on the upper surface of the film segment 6. The two deformable glue guiding elements 44 include an elastic resin sheet 45 located in the middle and a first piezoelectric ceramic sheet 4 attached to both sides of the first elastic resin sheet 45. 6 and a first elastic rubber layer 47 covering the first piezoelectric ceramic sheet 46; by controlling the electric field to extend one of the two first piezoelectric ceramic sheets 46 and shorten the other to control the bending deformation of the deformable adhesive guide 44, thereby adjusting the gap between the lower parts of the two deformable adhesive guides 44 to control the amount of adhesive dispensed; an electrostatic brush 411 is provided on the lower end face of the upper seat 41 on the side of the deformable adhesive guide 44 facing the film segment 6, and the electrostatic brush 411 causes the upper surface of the film segment 6 to carry static electricity by rubbing against it; a glue-smoothing block 412 is provided on the lower end face of the upper seat 41 on the other side of the deformable adhesive guide 44 to smooth the adhesive.

[0111] Furthermore, on the inclined surface of the V-shaped glue storage groove 43 above the deformable glue guide 44, high-speed elastic pieces 48 are respectively provided, which bend towards the inclined surface of the V-shaped glue storage groove 43 on the opposite side under static conditions; the high-speed elastic pieces 48 include a second elastic resin sheet 481, a second piezoelectric ceramic sheet 482 attached to both sides of the second elastic resin sheet 481, and a second elastic rubber layer 483 covering the second piezoelectric ceramic sheet 482; by controlling the two second piezoelectric ceramic sheets 482 to repeatedly extend one and shorten the other by controlling the high-speed elastic pieces 48 to bend and deform at high speed, thereby squeezing the glue downward to promote the stable extrusion of the glue; an elastic tension piece 49 is connected to the upper end of the high-speed elastic pieces 48 respectively; the other end of the elastic tension piece 49 extends to the inclined surface of the V-shaped glue storage groove 43 above the high-speed elastic pieces 48 and connects with the inclined surface.

[0112] Furthermore, multiple sets of guide cutting rollers 11 are distributed in a regular hexagonal pattern, and each set of guide cutting rollers 11 is equipped with two sets of annular blades 15 and annular grooves 16 to cut the cylindrical film 5 into twelve equal parts; a glue replenishing pipe 40 is provided above the V-shaped glue storage tank 43.

[0113] Furthermore, the method for preparing this tape includes the following steps:

[0114] ① The cylindrical film 5 is extruded using a ring extruder and cooled to form a cylindrical film that meets the thickness requirements;

[0115] ② The cylindrical film passes through the annular dividing device 1 at the same time, and is squeezed and guided by the first roller 13 and the second roller 14. The angle formed by the adjacent guide cutting rollers 11 is guided by the ball 12. The cylindrical film is cut by the annular blade 15 and the annular groove 16 while passing through the first roller 13 and the second roller 14.

[0116] ③ The cut film segments 6 are guided and leveled by the corresponding leveling rollers 2, and the film segments 6 located at the corners of the regular polygons are transitioned by the corresponding concave and convex arc rollers;

[0117] ④ The flattened film segment 6 passes between the upper seat 41 and the lower seat 42. When the film segment 6 passes through the electrostatic brush 411, static electricity is generated by friction with the electrostatic brush 411.

[0118] ⑤ When the thin film segment 6 passes under the deformable adhesive guide 44, the electric field controls the two second piezoelectric ceramic sheets 482 to repeatedly extend one and shorten the other to control the high-speed elastic sheet 48 to bend and deform repeatedly at high speed, thereby squeezing the adhesive downward to promote stable extrusion of the adhesive; and according to the process settings or sensor monitoring feedback, the electric field controls the two first piezoelectric ceramic sheets 46 to extend one and shorten the other to control the bending deformation of the deformable adhesive guide 44, thereby adjusting the gap between the lower parts of the two deformable adhesive guides 44 to control the amount of adhesive discharged;

[0119] ⑥ When the coated film segments 6 pass through the coating block 412, they are coated with adhesive by the coating block 412.

[0120] ⑦ After the adhesive coating is completed, the film segment 6 is laminated with the base layer in step 5 and then wound up by the winding mechanism 3.

[0121] A cylindrical film is extruded using a ring extruder and directly cut by a ring slitting device. Following direct coating by a coating device, it is laminated with the base layer from step 5 and then wound up. This significantly accelerates manufacturing speed and reduces the number of steps, thereby significantly improving production efficiency while ensuring production quality. Because the film is extruded into a cylindrical shape and directly cut by the ring slitting device, the base material can be completely and equally divided, making full use of raw materials. No scrap is generated during cutting, effectively reducing waste and loss. Furthermore, the ring slitting device uses multiple sets of guide cutting rollers arranged in a regular polygon, combined with rolling balls placed at the corners of adjacent guide cutting rollers, to control the uniform tension of the cylindrical film, ensuring accurate cutting dimensions and smooth cut edges. The device is complete and features annular blades and annular grooves on the first and second rollers of the guide cutting roller, enabling cutting simultaneously with extrusion guidance and positioning. This synchronous and continuous process ensures smooth and accurate cutting. Furthermore, the regular polygonal arrangement perfectly matches the structural characteristics of the cylindrical film formed by annular extrusion. Due to the regular polygonal structure and the multiple blade widths, the cut film segments can be easily and naturally drawn out from different angles after cutting. This provides space for the leveling roller and winding mechanism, ensuring the feasibility of simultaneously installing multiple leveling rollers and winding mechanisms, and reducing installation difficulty. The overall device fully utilizes three-dimensional space, has a compact structure, occupies little space, and has a high degree of integration.

[0122] The coating device is positioned between the annular slitting device and the winding mechanism, enabling a continuous completion of the entire tape manufacturing process. Unlike existing coating devices, this device employs a surface coating method. Existing coating methods typically use roller coating, which involves line contact with the film segments. This short contact time relies on adhesive extrusion to adhere the adhesive to the film segments, making it difficult to ensure uniform adhesive application. Furthermore, it places stringent requirements on adhesive viscosity, flowability, and the surface material of the rollers. The surface coating method of this application increases the coating and smoothing time for the film segments, ensuring adhesive uniformity and adhesion. In this application, the film segments are first rubbed by an electrostatic brush, generating static electricity on their surface to enhance adhesive adsorption. After adhesive application, a leveling block further ensures uniform adhesive flow and surface smoothness through the coating process, guaranteeing uniform thickness and adhesion of the formed tape. Moreover, the coating device of this application… The device utilizes a V-shaped adhesive storage tank, deformable adhesive guiding components, and a high-speed spring sheet to achieve uniform and controllable adhesive application. Using a first piezoelectric ceramic sheet and a first elastic resin sheet, the gap size of the adhesive outlet can be precisely and quickly controlled via an electric field, thereby accurately controlling the adhesive application amount and adjusting the coating thickness. Furthermore, by utilizing a second piezoelectric ceramic sheet and a second elastic resin sheet, a high-speed, repeated deformation and extrusion of the high-speed spring sheet can be achieved via an electric field. The amplitude and frequency of this deformation are easily controllable, enabling continuous, uniform, and simple control over the amount and speed of adhesive output. Combined with the deformable adhesive guiding components, flexible changes in process parameters can be achieved, addressing most unstable factors during production and ensuring stable tape quality. This process can be manually adjusted by operators or automatically adjusted by automatic measuring devices or sensors, resulting in a high degree of automation. Moreover, the overall structure is simple, easy to install and operate, has low manufacturing costs, stable operation, is not easily damaged, and has a long service life.

[0123] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A high-strength elastic electrical insulating tape winding mechanism, the winding mechanism (3) comprising a center rotating roller (31) that can be stepped and a plurality of support rod groups (32) that are evenly divergent and detachably fixed to the outer circumferential surface of the center rotating roller (31) along the length direction of the center rotating roller (31); a winding roller (33) is detachably and rotatably fixed to the end of the support rod group (32); a tape paper ring (34) is detachably sleeved on the outer circumferential surface of the winding roller (33); a plurality of cutting mechanisms (35) are also arranged in a divergent manner between the two adjacent support rod groups (32); the cutting mechanism (35) comprises a flat first cavity (351); the bottom end of the first cavity (351) is detachably fixed to the outer circumferential surface of the center rotating roller (31) along the length direction of the center rotating roller (31), and the outer end of the first cavity (351) is an open end; a blade (352) is inserted into the first cavity (351) from the outer end of the first cavity (351) and is in sealed sliding fit with the first cavity (351); a plurality of return springs (353) are connected between the blade (352) and the first cavity (351); a sealed second cavity (354) is enclosed in the first cavity (351); the bottom of the blade (352) extends a piston body (355); the piston body (355) is in sealed sliding fit with the second cavity (354); a pump pipe (356) extends into the second cavity (354) from the outside to pump air into the second cavity (354); suction slits (357) are respectively formed on the front and back surfaces of the first cavity (351); the suction slits (357) are connected with suction slits (358) outside; the suction slits (358) respectively face the tangent direction of the adjacent wound tape roll (359) after winding; the elongation stroke of the blade (352) is greater than the required stroke for cutting the tape; at least one end of the first shaft (331) of the winding roller (33) extends outwardly from the support rod group (32), and the outer circumferential surface of the extended part is provided with gear teeth in the circumferential direction; a gear (332) is also fixedly arranged at the winding position; the gear (332) is located outside the tangent of the circular track of the first shaft (331) revolving around the center rotating roller (31) and just engages with the gear (332) when the first shaft (331) is at the winding position; The winding position is located on the right side of the center rotating roller (31) in the vertical direction, and the deflection angle is such that the tape winding does not touch the unelongated blade (352) at the beginning of winding. The flat roller (2) and the winding mechanism (3) are further provided with a coating device (4), the coating device (4) comprises a rectangular upper seat body (41) and a lower seat body (42); the upper end surface of the lower seat body (42) is a smooth plane to support the sliding of the film segment (6); the middle part of the upper seat body (41) is provided with a V-shaped glue storage groove (43); the bottom of the V-shaped glue storage groove (43) is provided with two deformable glue guiding pieces (44) on the front and back sides respectively; the lower part of the two deformable glue guiding pieces (44) has a gap to make the glue liquid remain on the upper surface of the film segment (6); the two deformable glue guiding pieces (44) comprise a middle elastic resin sheet (45), a first piezoelectric ceramic sheet (46) attached to the two sides of the first elastic resin sheet (45), and a first elastic rubber layer (47) covering the first piezoelectric ceramic sheet (46); one of the two first piezoelectric ceramic sheets (46) is elongated and the other is shortened by electric field control to control the bending deformation of the deformable glue guiding piece (44), so as to adjust the gap between the lower parts of the two deformable glue guiding pieces (44) to control the glue output; the lower end surface of the upper seat body (41) on one side of the film segment (6) is provided with an electrostatic brush (411), and the electrostatic brush (411) carries static electricity on the upper surface of the film segment (6) by friction with the upper surface of the film segment (6); the lower end surface of the upper seat body (41) on the other side of the deformable glue guiding piece (44) is provided with a glue uniformizing block (412) to uniformize the glue; The V-shaped glue storage groove (43) above the deformable glue guiding piece (44) is further provided with a high-speed elastic sheet (48) which is curved towards the opposite V-shaped glue storage groove (43) slope in static state; the high-speed elastic sheet (48) comprises a second elastic resin sheet (481), a second piezoelectric ceramic sheet (482) attached to the two sides of the second elastic resin sheet (481), and a second elastic rubber layer (483) covering the second piezoelectric ceramic sheet (482); the two second piezoelectric ceramic sheets (482) are controlled to be elongated and shortened repeatedly by electric field to control the high-speed repeated bending deformation of the high-speed elastic sheet (48), so as to extrude the glue liquid downward to promote the stable extrusion of the glue liquid; the upper end of the high-speed elastic sheet (48) is connected with an elastic tension sheet (49); the other end of the elastic tension sheet (49) extends to the slope of the V-shaped glue storage groove (43) above the high-speed elastic sheet (48) and is connected with the slope; The center rotating roller (31) comprises a second core shaft (311) and an intermediate sleeve (312) detachably connected to the second core shaft (311); the support rod group (32) comprises a right rod (321) and a left rod (322); the outer ends of the right rod (321) and the left rod (322) are respectively fixed with bearings (323); a hydraulic or electric telescopic rod (324) is connected between the right rod (321) and the left rod (322) to adjust the distance between the right rod (321) and the left rod (322); the left rod (322) is fixed in position, and a first core shaft (331) with a gear tooth is supported at one end by the left rod (322); a dovetail sliding groove (313) is formed on the outer circumferential surface of the intermediate sleeve (312) along the length direction thereof; the right rod (321), the left rod (322) and the bottom end of the first cavity (351) are respectively provided with sliding keys (325) which can be inserted into the dovetail sliding groove (313).

2. The winding mechanism of the high-strength elastic electrical insulating tape according to claim 1, characterized by The gear (332) is driven to rotate by a first servo motor (333); and the second core shaft (311) is driven to rotate by a second servo motor (314).

3. The winding mechanism of high strength elastic electrical insulating tape according to claim 1, characterized in that, The winding method of the winding mechanism comprises the following steps: ①At the winding position, the first servo motor (333) drives the gear (332) to rotate, the gear (332) drives the meshed first core shaft (331) to rotate, thereby driving the winding roller (33) and the adhesive tape ring (34) to rotate, so as to wind the adhesive tape until the size of the adhesive tape roll (359) formed reaches the requirement, and the first servo motor (333) stops; ②At the same time when the first servo motor (333) stops, the second servo motor (314) drives the second core shaft (311) to rotate step by step in the winding direction of the adhesive tape, so that the winding roller (33) which has completed winding revolves to the cutting position, the included angle between the winding position and the cutting position is just equal to the included angle between the adjacent two support rod groups (32), so that the winding roller (33) near the winding position is in the winding position; in the rotating process of the winding roller (33) which has completed winding, the adhesive tape is supported outwardly by the adjacent winding roller (33) above which winding has not started; the linear speed of the winding roller (33) which has completed winding revolving around the second core shaft (311) is just equal to the moving speed of the adhesive tape, so as to ensure the continuity of the adhesive tape production; when the winding roller (33) which has completed winding leaves the winding position, the first core shaft (311) is disengaged from the gear (332); when the adjacent winding roller (33) which has not started winding revolves to the winding position, the first core shaft (311) thereof is engaged with the gear (332); therefore, the first servo motor (333) can also be selected to keep the gear (332) rotating all the time. ③Step ② is carried out at the same time, through the pump pipe (356) to the second cavity (354) between the location of the winding and cutting position at this time, the pump into the pressurized air, push the piston (355) to move outward, so as to push the blade (352) elongation, when the winding roll (33) just arrived at the cutting position when the winding is completed, the blade (352) and this time is located in the winding position of the start winding roll (33) and located in the cutting position of the winding roll (33) completed by the common tension of the tape and cut the tape; ④the blade (352) cut the tape, continue to elongate outward, because the volume of the first cavity (351) is increasing during the outward movement of the blade (352), a short time to form a huge negative pressure, the external air through the suction gap (358) and suction slit (357) into the first cavity (351), so that the two short tape cut by the blade (352) is moved to the second core shaft (311) side under the negative pressure adsorption, so that the two end tape is respectively adhered to the tape paper ring (34) at this time in the winding position and the tape roll (359) at this time in the cutting position; When the blade (352) is elongated to the limit, the gas in the second cavity (354) is released, and the blade (352) returns to the initial position under the recovery of the return spring (353); ⑤the blade (352) cut the tape at the same time, the winding roll (33) corresponding to the first servo motor (333) drives the winding roll (33) at this position to rotate and start a new winding; ⑥during the winding process of the winding roll (33) in step ⑤, the operator controls the hydraulic or electric telescopic rod (324) on the support rod group (32) corresponding to the winding roll (33) to push the right rod (321) outward, so that the winding roll (33) on it is separated from the support and limit of the support rod group (32), and is taken down by the operator; Then the operator installs a new winding roll (33) on the left rod (322), holds the winding roll (33) flat, controls the hydraulic or electric telescopic rod (324) to pull the right rod (321) back, so that the winding roll (33) is also inserted into the bearing (323) on the right rod (321); This step is completed before the winding roll (33) at this winding position is completed; ⑦repeat the process of steps ① to ⑥ to carry out the tape winding operation without stop.

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