Semi-conductive butyl rubber buffer strip and preparation device thereof

Abstract

The invention discloses a semi-conductive butyl rubber buffer strip and a preparation device thereof, and particularly relates to the field of cable manufacturing, the preparation device comprises a coating mechanism, a drying mechanism and a calendering mechanism, the coating mechanism is used for coating the surface of base cloth with a coating layer, the drying mechanism is used for heating and drying the coated base cloth, and the calendering mechanism is used for calendering the coated base cloth; the calendaring mechanism is used for calendaring the calendaring layer to the surface of the coated base cloth. By arranging the static electricity eliminating mechanism, static electricity generated in the unwinding process is eliminated, so that the problem that the quality of a calendered product is affected due to the fact that dust particles are adsorbed to the surface of a material by the static electricity is solved; the prepared semi-conductive butyl rubber buffer strip is good in air tightness, excellent in mechanical performance, excellent in electrical performance and good in heat resistance and aging resistance, can absorb and buffer mechanical impact caused by the cable in the installation and transportation process when being applied to the cable, and is simple in production process, stable in technical performance and high in practicability.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, and more specifically, to a semi-conductive butyl rubber buffer tape and its preparation apparatus. Background Technology

[0002] With the continuous increase in electricity demand, the use of high-voltage and ultra-high-voltage cables is becoming increasingly widespread. During the long-term operation of these cables, mechanical impacts during installation and transportation can easily damage the cable shielding layer and the metal sheath, thus affecting the cable's service life and performance.

[0003] Semiconducting butyl rubber buffer tape is a material used in modern power cable systems. In the cable shielding layer, it mainly absorbs and buffers mechanical damage caused during installation and transportation. It has excellent resistivity, can make full electrical contact with the metal sheath, and is elastic and non-corrosive.

[0004] The production process of semi-conductive butyl rubber buffer tape mainly includes coating and calendering. During processing, the base fabric is first coated, and then the coated material is heated and dried. Next, the heated and dried material is wound up, and finally, after the material cools down, it is calendered. Therefore, during calendering, the wound material needs to be unwound. However, during the unwinding process, the base fabric material and the coating layer will gradually separate. During the winding process, the base fabric material and the coating layer will gradually tighten due to the extrusion pressure, resulting in extrusion contact between the base fabric material and the coating layer. Therefore, during the unwinding process, as the base fabric material and the coating layer gradually separate, static electricity will be generated between the lint on the base fabric material and the coating layer. This static electricity will attract dust from the air, causing the dust attracted by static electricity to mix into the material during the calendering process, affecting the final quality of the product. Summary of the Invention

[0005] The present invention provides a semiconductive butyl rubber buffer tape and its preparation apparatus. The problem to be solved is that in existing calendering processes, the coated and dried base fabric needs to be unwound and fed. During the unwinding process, the base fabric material and the coating layer gradually separate. During the winding process, the base fabric material and the coating layer gradually tighten due to the extrusion pressure, resulting in extrusion contact between the base fabric material and the coating layer. Therefore, during unwinding, as the base fabric material and the coating layer gradually separate, static electricity is generated between the lint on the base fabric material and the coating layer. This static electricity attracts dust from the air, causing the dust attracted by static electricity to mix into the material during the calendering process, affecting the final quality of the product.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a preparation apparatus for a semiconductive butyl rubber buffer tape, comprising: a coating mechanism, a drying mechanism, and a calendering mechanism, wherein the coating mechanism is used to coat a coating layer onto the surface of a base fabric, the drying mechanism is used to heat and dry the coated base fabric, and the calendering mechanism is used to calender a calendering layer onto the surface of the coated base fabric. The calendering mechanism includes a calendering frame, on which are installed an unwinding roll, a guide roll, and a calendering roll. The unwinding roll is used to transport the coated base fabric, the guide roll is used to guide the transport of the coated base fabric, and the calendering roll is used to calender the calendered layer onto the surface of the coated base fabric. The calendering mechanism is also equipped with an electrostatic elimination mechanism, which includes a rotatable conductive roller that contacts the coated base fabric surface. The conductive roller is electrically connected to a grounding wire, and the grounding end of the grounding wire is grounded.

[0007] In a preferred embodiment, the static elimination mechanism further includes an adjustment component, which includes a drive member mounted on a calender frame. The drive member has a lead screw mounted on its output end. A slide block is slidably disposed on the calender frame. The lead screw and the slide block are threadedly connected. A conductive roller is rotatably mounted on the slide block via a bearing. The end of the grounding wire furthest from the grounding end is connected to the bearing.

[0008] In a preferred embodiment, the conductive roller is provided with a dust suction mechanism, which includes a plurality of dust suction holes that are evenly distributed in the circumferential direction on the surface of the conductive roller. The end of the conductive roller is connected to an air intake component, which sucks up dust particles from the surface of the base fabric.

[0009] In a preferred embodiment, the end of the conductive roller is provided with a horizontal hole, and the horizontal hole is coaxial with the conductive roller. The air inlet ends of multiple dust suction holes are all connected to the horizontal hole. A coupling is installed at the end of the conductive roller, and an air extraction pipe is connected to the coupling. The horizontal hole is connected to the air extraction pipe through the coupling, and the air extraction end of the air extraction pipe is connected to the air extraction assembly.

[0010] In a preferred embodiment, the conductive roller is further provided with a sealing mechanism, which includes multiple rotatable blocks. Each block corresponds to a dust collection hole, and the blocks are hinged to the corresponding dust collection holes. When the conductive roller rotates, when one of the dust collection holes is perpendicular to the base fabric surface, the block hinged to the dust collection hole seals the air inlet of the dust collection hole.

[0011] In a preferred embodiment, the sealing mechanism further includes multiple arc-shaped grooves, each corresponding to a dust extraction hole, and each arc-shaped groove is connected to a corresponding dust extraction hole. A circular shaft is rotatably mounted within each arc-shaped groove, and each circular shaft corresponds to a blocking block. Multiple blocking blocks are mounted on corresponding circular shafts. An elastic element is mounted on the circular shaft for rotating and resetting the shaft. A stop rod is fixedly mounted at the end of each circular shaft. Each stop rod revolves with the rotation of the conductive roller. A stop rod is fixedly mounted on the slide block, which is used to bring the stop rod into contact with the stop rod during its revolution, and upon contact, the stop rod rotates under force due to the movement of the stop rod.

[0012] In a preferred embodiment, the calender stand is further provided with a glue-blocking assembly, which includes an adjusting crossbar. The adjusting crossbar is fixedly mounted on the calender stand, and a glue-blocking seat is slidably mounted on the adjusting crossbar. A glue-blocking plate is fixedly mounted on the glue-blocking seat, and one end of the glue-blocking plate is located between two calender rolls.

[0013] In a preferred embodiment, the material includes a base fabric, a coating layer, and a calendered layer. The coating layer is applied to the surface of the base fabric by coating, and the calendered layer is applied to the surface of the coating layer by calendering.

[0014] In a preferred embodiment, the base fabric is a polyester fabric, the coating layer is a semi-conductive butyl rubber adhesive, the coating layer is a solvent adhesive, and the calendering layer is butyl rubber, which is a semi-conductive butyl rubber.

[0015] In a preferred embodiment, the coating layer is formed by applying a solvent adhesive to the surface of the base fabric, and the calendered layer is formed by calendering a semi-conductive butyl rubber onto the surface of the coating layer.

[0016] The beneficial effects of this invention are as follows: This invention addresses the issue of static electricity attracting dust particles to the material surface and affecting product quality after calendering by eliminating static electricity during the unwinding process through an electrostatic elimination mechanism. Furthermore, dust-collecting holes on the conductive rollers absorb dust particles adsorbed by static electricity before the elimination process. A sealing mechanism further prevents interruptions in contact between the holes and the material, thus avoiding localized static residue. The semi-conductive butyl rubber buffer tape prepared by this invention, with its semi-conductive butyl rubber adhesive layer and calendered layer, exhibits excellent airtightness, superior mechanical properties, excellent electrical properties, and good heat and aging resistance. It effectively reduces the thermal resistance of cables, enhances heat dissipation, effectively absorbs and buffers mechanical impacts, reduces damage between the shielding layer and the metal sheath, and effectively shields and weakens electric field strength, improving the electrical performance of the cable. It maintains stable performance under both high and low temperature conditions, extending the overall service life of the cable. It is non-corrosive, more environmentally friendly, and has a simple production process, stable technical performance, and strong practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the coating mechanism, drying mechanism, and calendering mechanism used in the preparation of the semiconductive butyl rubber buffer tape according to the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the calendering mechanism of the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the calendering mechanism of the present invention.

[0020] Figure 4 This is an enlarged view of the static electricity elimination mechanism of the present invention.

[0021] Figure 5 This is a schematic diagram of the dust collection mechanism of the present invention.

[0022] Figure 6 This is a side view of the dust collection mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the present invention, showing the conductive roller moving to a position where the dust collection hole is perpendicular to the base fabric surface.

[0024] Figure 8 This is a schematic diagram of the sealing mechanism of the present invention.

[0025] Figure 9 This is a schematic diagram showing the movement state of the blocking block in the blocking mechanism of the present invention.

[0026] Figure 10 for Figure 8 and Figure 9Enlarged view of the differences in the middle section.

[0027] Figure 11 This is a schematic diagram showing the motion state of the blocking rod of the sealing mechanism of the present invention.

[0028] Figure 12 This is a schematic diagram of the structural composition of the semiconductive butyl rubber buffer tape of the present invention.

[0029] Figure 13 This is a flowchart of the preparation method of the semiconductive butyl rubber buffer tape of the present invention.

[0030] Figure 14 This is a system diagram of the preparation of the semiconductive butyl rubber buffer tape of the present invention.

[0031] The attached figures are labeled as follows: 1. Base fabric; 11. Coating layer; 12. Calendering layer; 2. Coating mechanism; 3. Drying mechanism; 4. Calendering mechanism; 41. Calendering frame; 42. Unwinding roller; 43. Guide roller; 44. Calendering roller; 45. Glue-blocking assembly; 451. Adjusting crossbar; 452. Glue-blocking seat; 453. Glue-blocking plate; 5. Static elimination mechanism; 51. Conductive roller; 52. Grounding wire; 53. Adjusting assembly; 531. Driving component; 532. Lead screw; 533. Slide seat; 6. Dust collection mechanism; 61. Dust collection hole; 62. Horizontal hole; 63. Coupling; 64. Air extraction pipe; 7. Sealing mechanism; 71. Arc groove; 72. Round shaft; 73. Block; 74. Abutment rod; 75. Stop rod. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Example 1 Refer to the instruction manual appendix Figure 12 A semi-conductive butyl rubber buffer tape includes a base fabric 1, a coating layer 11, and a calendering layer 12. The coating layer 11 is applied to the surface of the base fabric 1 by coating, and the calendering layer 12 is applied to the surface of the coating layer 11 by calendering.

[0034] The base fabric 1 is a polyester fabric (e.g., polyester cloth), the coating layer 11 is a semi-conductive butyl rubber adhesive, the coating layer 11 is a solvent adhesive, and the calendering layer 12 is butyl rubber, which is a semi-conductive butyl rubber.

[0035] The coating layer 11 is formed by coating the base fabric 1 with solvent adhesive, and the calendered layer 12 is formed by calendering semi-conductive butyl rubber on the surface of the coating layer 11.

[0036] Semiconducting butyl rubber adhesive is a specialized adhesive with conductivity and rubber elasticity, widely used in the manufacture of electronic, electrical, and shielding materials. Its main components and properties can be broadly categorized as follows: Base rubber: Butyl rubber, which provides excellent airtightness, heat resistance and chemical stability.

[0037] Conductive filler: Carbon black, a commonly used conductive filler, can impart conductivity to adhesives.

[0038] Metal powders (such as silver powder and copper powder): can be used to improve conductivity, but they are more expensive.

[0039] Plasticizers: used to improve flexibility and processing performance, commonly phthalates or fatty acid esters are compounds.

[0040] Solvent-based system: Using organic solvents such as toluene and ethyl acetate, it has a fast drying speed and excellent adhesion.

[0041] Antioxidants and anti-aging agents: to improve the aging resistance of adhesives.

[0042] Other additives, such as tackifying resins, crosslinking agents, and thickeners, are used to adjust viscosity, adhesion, and heat resistance.

[0043] Conductivity: Due to the presence of conductive fillers, this type of adhesive has a certain degree of conductivity, making it suitable for applications requiring electromagnetic shielding.

[0044] Weather resistance: The molecular structure of butyl rubber gives it excellent weather resistance under different environmental conditions, including resistance to ultraviolet rays, ozone and moisture.

[0045] Chemical stability: Excellent chemical resistance, suitable for use in harsh environments.

[0046] Flexibility and elasticity: It can absorb mechanical stress and vibration, protecting electronic components.

[0047] Air tightness: Its excellent air tightness makes it suitable for applications that require prevention of air and moisture penetration.

[0048] The main components of the solvent adhesive are as follows: Solvent adhesive: Butyl rubber: dissolved in organic solvents, used as the main component of adhesives.

[0049] Organic solvents, such as toluene and ethyl acetate, are used to dissolve rubber and adjust its viscosity.

[0050] Conductive fillers, such as carbon black and graphene, improve electrical conductivity.

[0051] Plasticizers: Improve flexibility and adhesion.

[0052] Stabilizers: prevent degradation and deterioration.

[0053] Example 2 Based on the semiconductive butyl rubber buffer tape provided in Example 1, the present invention also provides a preparation process for the semiconductive butyl rubber buffer tape, as detailed in the appendix to the specification. Figure 13 This includes the following steps: Step 1: Make base fabric 1. Select polyester fabric according to the product specifications to make base fabric 1 that meets the requirements. Step 2: Clean the surface of base fabric 1 and remove debris; Step 3: Apply coating layer 11. Solvent adhesive is applied to the base fabric 1 through coating mechanism 2, and then dried by drying mechanism 3 to form coating layer 11. Step 4: Apply calendering layer 12. Calendering layer 12 is formed by calendering the coated and dried base fabric 1 through calendering mechanism 4. Step 5: Test the airtightness, mechanical properties, electrical properties, and heat and aging resistance of the semi-conductive butyl rubber buffer tape product.

[0054] It should be noted that the semi-conductive butyl rubber buffer tape prepared by this invention, due to the presence of a semi-conductive butyl rubber adhesive layer and a semi-conductive butyl rubber calendering layer, exhibits excellent airtightness, superior mechanical properties, excellent electrical properties, and good heat and aging resistance. It can effectively reduce the thermal resistance of the cable, enhance its heat dissipation performance, effectively absorb and buffer mechanical impacts, reduce damage between the shielding layer and the metal sheath, and effectively shield and weaken the electric field strength, thereby improving the cable's electrical performance. It maintains stable performance under both high and low temperature environments, extending the overall service life of the cable. It is non-corrosive, more environmentally friendly, and has a simple production process, stable technical performance, and strong practicality.

[0055] Based on the above embodiments, the present invention also provides an apparatus for preparing a semiconductive butyl rubber buffer tape, as described in the appendix to the specification. Figure 14 It mainly includes a coating mechanism 2, a drying mechanism 3 and a calendering mechanism 4. The coating mechanism 2 is used to coat the coating layer 11 onto the surface of the base fabric 1. The drying mechanism 3 is used to heat and dry the coated base fabric 1. The calendering mechanism 4 is used to calender the calendering layer 12 onto the surface of the coated base fabric 1. The calendering mechanism 4 includes a calendering frame 41, on which an unwinding roller 42, a guide roller 43, and a calendering roller 44 are provided. The unwinding roller 42 is used to transport the coated base fabric 1, the guide roller 43 is used to guide the transport of the coated base fabric 1, and the calendering roller 44 is used to calender the calendered layer 12 onto the surface of the coated base fabric 1.

[0056] The preparation device of this invention improves the production efficiency of semiconductive butyl rubber buffer tape, reduces production costs, and enhances the product's airtightness, mechanical properties, electrical properties, and heat and aging resistance.

[0057] Example 3 In the above embodiments, the key equipment determining the production quality of the semiconductive butyl rubber buffer tape provided by the present invention mainly includes the coating mechanism 2 and the calendering mechanism 4. In the corresponding production of semiconductive butyl rubber buffer tape in the prior art, in order to ensure the quality of the semiconductive butyl rubber buffer tape, the coated material is usually wound up after coating, and after the coated material is fully cured, it is transported to the calendering mechanism 4 for calendering. After coating, the material is first wound up for storage and transportation, and then unwound to the calender for calendering when needed. This method also avoids excessive occupation of on-site equipment time and improves flexibility to varying degrees, and is suitable for mass production.

[0058] The polyester fabric used for the base fabric 1 naturally has a lot of pile structure, which is unavoidable in textiles. During unwinding, the base fabric 1 gradually separates from the coating layer 11. During winding, the base fabric 1 and the coating layer 11 are squeezed and tightened, resulting in compression contact between them. Therefore, during unwinding, as the base fabric 1 and the coating layer 11 gradually separate, static electricity is generated between the pile on the base fabric 1 and the coating layer 11. This static electricity attracts particles or dust from the air, causing these particles and dust to mix into the material during calendering, affecting the quality of the final product. To address this, the present invention provides a static electricity elimination mechanism 5 to eliminate the static electricity generated during unwinding. For details, please refer to the appendix of the specification. Figure 3 and Figure 4The calendering mechanism 4 is also equipped with an electrostatic elimination mechanism 5, which includes a rotatable conductive roller 51 (the conductive roller 51 can be driven to rotate by a motor). The conductive roller 51 is in contact with the surface of the coated base fabric 1. A grounding wire 52 is electrically connected to the conductive roller 51, and the grounding end of the grounding wire 52 is grounded. The base fabric 1 after two coatings and drying is guided by the guide roller 43 and a calendering roller 44, so that the base fabric 1 after two coatings and drying is in a straight state. During the unwinding and conveying of the base fabric 1 after two coatings and drying, the static electricity is transferred from the base fabric 1 after two coatings and drying to the conductive roller 51 by contacting the surface of the base fabric 1 after two coatings and drying, and then discharged through the grounding wire 52. In order to ensure stable contact between the conductive roller 51 and the base fabric 1 after two coatings and drying, the present invention also proposes an adjustment component 53 for driving the conductive roller 51 to move closer to the base fabric 1 after two coatings and drying. For details, please refer to the appendix of the specification. Figure 3 The adjustment component 53 includes a drive component 531, which is mounted on the calender frame 41. A lead screw 532 is mounted on the output end of the drive component 531. A slide block 533 is slidably mounted on the calender frame 41. The lead screw 532 is threadedly connected to the slide block 533. The conductive roller 51 is rotatably mounted on the slide block 533 via a bearing. The end of the grounding wire 52 furthest from the grounding end is connected to the bearing. The drive component 531 is a motor, which drives the lead screw 532 to rotate. The threaded connection between the lead screw 532 and the slide block 533 allows the slide block 533 to drive the conductive roller 51 towards the base fabric 1 after two coating and drying processes, ensuring stable contact between the conductive roller 51 and the base fabric 1 after two coating and drying processes. However, in the above-mentioned technology... In the technical solution, during the unwinding process of the base fabric 1 after two coatings and drying, the static electricity generated on it is first eliminated by unwinding. Therefore, during the unwinding and static elimination process, static electricity exists on the surface of the base fabric 1 after two coatings and drying. In the factory production process, dust particles are inevitably present. Therefore, in this section, dust particles are adsorbed on the surface of the base fabric 1 after two coatings and drying due to static electricity. Although the base fabric 1 after two coatings and drying is no longer static electricity after static elimination, the dust particles adsorbed by static electricity still remain on the surface of the base fabric 1 after two coatings and drying, and the remaining dust particles will still affect the quality of the finished product.

[0059] Therefore, the present invention also provides the following technical solutions, specifically as detailed in the appendix to the specification. Figures 5 to 6A dust collection mechanism 6 is provided on the conductive roller 51. The dust collection mechanism 6 includes multiple dust collection holes 61, which are evenly distributed in the circumferential direction on the surface of the conductive roller 51. An air intake component is connected to the end of the conductive roller 51. The air intake component sucks up dust particles from the surface of the base fabric 1. A transverse hole 62 is opened at the end of the conductive roller 51, and the transverse hole 62 is coaxial with the conductive roller 51. The air intake ends of the multiple dust collection holes 61 are all connected to the transverse hole 62. A coupling 63 is installed at the end of the conductive roller 51, and an air extraction pipe 64 is connected to the coupling 63. The transverse hole 62 is connected to the air extraction pipe 64 through the coupling 63. The suction pipe 64 is connected to the suction assembly, which can be a suction pump. The coupling 63 is fixedly mounted on the slide 533, and the two ends of the coupling 63 are rotatably connected to the suction pipe 64 and the conductive roller 51, respectively. The suction pipe 64 and the conductive roller 51 are connected through the coupling 63. During the static elimination process, the suction pump draws in the dust particles remaining on the surface of the base fabric 1, which can enter the transverse hole 62 through the dust suction hole 61 and be discharged through the suction pipe 64, so as to solve the problem that the remaining dust particles still affect the quality of the finished product.

[0060] In the above technical solution, the dust extraction mechanism 6 uses an air extraction component and dust extraction holes 61 on the conductive roller 51 to extract dust particles remaining on the surface of the base fabric 1 after two coating and drying processes. Although it can adsorb and discharge the remaining dust particles, due to the dust extraction holes 61 on the conductive roller 51, during the rotation of the conductive roller 51, when the air inlet of its dust extraction hole 61 contacts the surface of the base fabric 1 after two coating and drying processes, such as... Figure 7 As shown, this is a schematic diagram of the structure where the suction hole 61 is perpendicular to the surface of the base fabric 1 after two coatings and drying. 'a' represents the contact position between the conductive roller 51 and the surface of the base fabric 1 after two coatings and drying. The suction hole 61 on the conductive roller 51 is not in contact with the surface of the base fabric 1 after two coatings and drying. The edge of the suction hole 61 will cause scratches or abrasions to the surface of the base fabric 1 after two coatings and drying. Furthermore, the existence of the suction hole 61 means that the contact with the material at these holes will be interrupted, resulting in uneven static electricity elimination. When the material does not contact the conductive part, local static electricity will remain, and the static electricity cannot be fully eliminated. In addition, because there is suction force in the suction hole 61, when the suction hole 61 is applied to the surface of the base fabric 1 after two coatings and drying, there is a problem that the suction force applied to the surface of the base fabric 1 after two coatings and drying will cause deformation at that location.

[0061] To this end, the present invention also provides the following technical solutions, the specifics of which are provided in the appendix to the specification. Figures 8 to 10The conductive roller 51 is also equipped with a sealing mechanism 7, which includes multiple rotatable blocking blocks 73. Each blocking block 73 corresponds to a dust collection hole 61, and the multiple blocking blocks 73 are respectively hinged in the corresponding dust collection hole 61. When the conductive roller 51 rotates, when one of the dust collection holes 61 is perpendicular to the surface of the base fabric 1, the blocking block 73 hinged in the dust collection hole 61 seals the air inlet end of the dust collection hole 61. The blocking block 73 and the conductive roller 51 are made of the same conductive material. By hingedly setting the blocking block 73 in the dust collection hole 61, the dust collection hole 61 is sealed. When perpendicular to the surface of the coated and dried base fabric 1, the air inlet of the dust suction hole 61 is blocked by rotating the plug 73. This prevents the edge of the dust suction hole 61 from scratching or abrading the surface of the base fabric 1 after two coatings and drying. It also avoids the problem of local static electricity residue caused by the contact between the hole and the surface of the base fabric 1 after two coatings and drying. In addition, since it blocks the air inlet of the dust suction hole 61, there is no problem of applying suction to the surface of the base fabric 1 after two coatings and drying, which would cause deformation at that position, thus ensuring the production quality.

[0062] Further, please refer to the appendix to the instruction manual. Figure 11The sealing mechanism 7 also includes multiple arc-shaped grooves 71, each corresponding to a dust extraction hole 61, and each arc-shaped groove 71 is connected to its corresponding dust extraction hole 61. A circular shaft 72 is rotatably mounted within each arc-shaped groove 71, and each circular shaft 72 corresponds to a blocking block 73, with the blocking blocks 73 mounted on the corresponding circular shaft 72. An elastic element is provided on the circular shaft 72 for rotating and resetting the circular shaft 72. A stop rod 74 is fixedly mounted at the end of each of the multiple circular shafts 72, and the multiple stop rods 74 revolve with the rotation of the conductive roller 51. A sliding block 533 is fixedly mounted with... A stop bar 75 is provided. The stop bar 75 is used to bring the abutment rod 74 into contact with the stop bar 75 during the revolution of the abutment rod 74. Upon contact, the abutment rod 74 rotates under force due to its movement. The elastic element can be a torsion spring, which is installed on the round shaft 72 and located in the arc groove 71 for the reset rotation of the round shaft 72. When the conductive roller 51 is rotating, when the abutment rod 74 is not in contact with the stop bar 75, the movement trajectory of the multiple abutment rods 74 is away from the corresponding end of the round shaft 72, and is located on the side of the stop bar 75 away from the round shaft 72. During the rotation of the conductive roller 51, its abutment rods... 74 will approach and contact the stop bar 75. Upon contact, the conductive roller 51 will continue to rotate. Since the stop bar 75 is fixed, it will cause the stop bar 75 to drive the round shaft 72 to rotate. The round shaft 72 will then drive the block 73 to rotate until the dust suction hole 61 is perpendicular to the surface of the base fabric 1 after two coatings and drying. At this point, the block 73 will completely block the air inlet of the dust suction hole 61. Multiple dust suction holes 61 can be provided in the radial direction of the conductive roller 51. The block 73 on the same horizontal axis is synchronously driven by a round shaft 72. When the dust suction hole 61 on the axis is perpendicular to the surface of the base fabric 1 after two coatings and drying, the dust suction holes 61 on other horizontal axes remain connected and can still suck up dust particles. When the blocked dust suction hole 61 moves away from the surface of the base fabric 1 after two coatings and drying, its shaft 72 also moves away from the stop bar 75. At this time, under the action of the torsion spring, its shaft 72 can be reset and rotated, and drive the block 73 to reset, so that the dust suction hole 61 can be connected after moving away from the surface of the base fabric 1 after two coatings and drying, which further improves the product quality.

[0063] Further, please refer to the appendix to the instruction manual. Figure 2 The calender frame 41 is also provided with a glue-blocking assembly 45. The glue-blocking assembly 45 includes an adjusting crossbar 451, which is fixedly mounted on the calender frame 41. A glue-blocking seat 452 is slidably mounted on the adjusting crossbar 451, and a glue-blocking plate 453 is fixedly mounted on the glue-blocking seat 452. One end of the glue-blocking plate 453 is located between two calender rolls 44.

[0064] It should be noted that the glue-blocking seat 452 is equipped with a fastening bolt. The end of the fastening bolt is in contact with the adjusting crossbar 451. After the glue-blocking seat 452 is adjusted, the end of the fastening bolt can be adjusted to contact the adjusting crossbar 451, ensuring that the glue-blocking plate 453 is fixed in position. The glue-blocking plate 453 can effectively restrict the lateral flow of the rubber material, thereby ensuring that the rubber material stays on the predetermined path during calendering, improving the uniformity and quality of the product. Furthermore, by adjusting the position of the glue-blocking seat 452 to adjust the position of the glue-blocking plate 453, the thickness of the flowing rubber material can be controlled, thereby helping to achieve precise control of the thickness of the calendered product. In addition, the glue-blocking plate 453 helps to prevent the rubber material from overflowing from both sides, ensuring the cleanliness and efficiency of the calendering process. Moreover, by precisely controlling the flow and thickness of the rubber material, waste generation can be reduced, production efficiency can be improved, and raw material waste can be reduced.

[0065] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively 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.

Claims

1. A preparation device for a semi-conductive butyl rubber buffer tape, characterized in that: include: A coating mechanism (2), a drying mechanism (3) and a calendering mechanism (4), wherein the coating mechanism (2) is used to coat a coating layer (11) onto the surface of a base fabric (1), the drying mechanism (3) is used to heat and dry the coated base fabric (1), and the calendering mechanism (4) is used to calender a calendering layer (12) onto the surface of the coated base fabric (1); The calendering mechanism (4) comprises a calendering frame (41), on which a reeling roller (42), a guide roller (43) and a calendering roller (44) are arranged, wherein the reeling roller (42) is used to convey the coated base fabric (1), the guide roller (43) is used to guide the conveying of the coated base fabric (1), and the calendering roller (44) is used to calender the calendering layer (12) onto the surface of the coated base fabric (1); The calendering mechanism (4) is also provided with a static electricity elimination mechanism (5), the static electricity elimination mechanism (5) comprising a rotatable conductive roller (51), the conductive roller (51) being in contact with the surface of the coated base fabric (1), the conductive roller (51) being electrically connected to a grounding wire (52), the grounding end of the grounding wire (52) being grounded.

2. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 1, characterized in that: The static elimination mechanism (5) further comprises an adjustment component (53), wherein the adjustment component (53) comprises a driving member (531), wherein the driving member (531) is mounted on a calender frame (41), and a screw rod (532) is mounted on the output end of the driving member (531), a slide seat (533) is slidably arranged on the calender frame (41), the screw rod (532) is threadedly connected to the slide seat (533), the conductive roller (51) is rotatably mounted on the slide seat (533) via a bearing, and an end of the grounding wire (52) away from the grounding end is connected to the bearing.

3. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 2, characterized in that: The conductive roller (51) is provided with a dust suction mechanism (6), the dust suction mechanism (6) comprising a plurality of dust suction holes (61), the plurality of dust suction holes (61) being evenly distributed in the circumferential direction of the surface of the conductive roller (51), the end of the conductive roller (51) being connected to an air intake component, the air intake component sucking dust particles on the surface of the base fabric (1) by suction.

4. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 3, characterized in that: A transverse hole (62) is provided at the end of the conductive roller (51), and the transverse hole (62) is coaxial with the conductive roller (51); the air inlet ends of the plurality of dust suction holes (61) are all connected to the transverse hole (62); a coupling (63) is installed at the end of the conductive roller (51); an air extraction pipe (64) is connected to the coupling (63); the transverse hole (62) is connected to the air extraction pipe (64) via the coupling (63); and the air extraction end of the air extraction pipe (64) is connected to an air extraction component.

5. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 4, characterized in that: The conductive roller (51) is further provided with a blocking mechanism (7), the blocking mechanism (7) comprising a plurality of rotatable blocking blocks (73), the blocking blocks (73) corresponding to the dust suction holes (61) one by one, and the plurality of blocking blocks (73) are respectively hingedly arranged in the corresponding dust suction holes (61), and when the conductive roller (51) rotates, when one of the dust suction holes (61) is perpendicular to the surface of the base fabric (1), the blocking block (73) hingedly arranged in the dust suction hole (61) blocks the air inlet end of the dust suction hole (61).

6. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 5, characterized in that: The blocking mechanism (7) further comprises a plurality of arcuate grooves (71), the arcuate grooves (71) corresponding one to one with the dust suction holes (61), and the plurality of arcuate grooves (71) are respectively connected to the corresponding dust suction holes (61), a circular shaft (72) is rotatably arranged in each of the plurality of arcuate grooves (71), the circular shaft (72) corresponding one to one with the blocking blocks (73), and the plurality of blocking blocks (73) are mounted on the corresponding circular shafts (72), the circular shafts (72) are provided with elastic members, and the circular shafts (72) are provided with elastic members. The elastic member is used for rotational resetting of the circular shaft (72). The ends of the plurality of circular shafts (72) are fixedly mounted with abutment rods (74). The plurality of abutment rods (74) perform orbital motion along with the rotation of the conductive roller (51). A blocking rod (75) is fixedly arranged on the slide seat (533). The blocking rod (75) is used to make the blocking rod (74) contact with the blocking rod (75) during the orbital motion of the blocking rod (74). When in contact, the blocking rod (74) rotates under force along with the movement of the blocking rod (74).

7. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 6, characterized in that: The calender frame (41) is also provided with a rubber blocking assembly (45), the rubber blocking assembly (45) comprising an adjusting cross bar (451), the adjusting cross bar (451) being fixedly arranged on the calender frame (41), a rubber blocking seat (452) being slidably arranged on the adjusting cross bar (451), a rubber blocking plate (453) being fixedly mounted on the rubber blocking seat (452), and one end of the rubber blocking plate (453) being located between the two calender rollers (44).

8. A semi-conductive butyl rubber buffer tape prepared by the preparation device as claimed in claim 7, characterized in that: The invention comprises a base fabric (1), a coating layer (11) and a calendering layer (12), wherein the coating layer (11) is applied to the surface of the base fabric (1) by coating, and the calendering layer (12) is applied to the surface of the coating layer (11) by calendering.

9. The semi-conductive butyl rubber buffer tape according to claim 8, characterized in that: The base fabric (1) is a polyester fabric, the coating layer (11) is a semi-conductive butyl rubber adhesive, the coating layer (11) is a solvent adhesive, the calendering layer (12) is butyl rubber, and the butyl rubber is a semi-conductive butyl rubber.

10. The semi-conductive butyl rubber buffer tape according to claim 9, characterized in that: The coating layer (11) is formed by coating a solvent adhesive on the surface of the base fabric (1), and the calendering layer (12) is formed by calendering a semi-conductive butyl rubber on the surface of the coating layer (11).

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