A semi-conductive butyl rubber buffer strip and its preparation device

Abstract

The present invention discloses a semi-conductive butyl rubber buffer strip and its preparation device, specifically relating to the field of cable manufacturing. The preparation device includes: a coating mechanism, a drying mechanism, and a calendering mechanism. The coating mechanism is used to coat the coating layer on the surface of the base fabric, the drying mechanism is used to heat and dry the coated base fabric, and the calendering mechanism is used to calender the calendered layer on the surface of the coated base fabric. By setting an electrostatic elimination mechanism, the present invention eliminates the static electricity generated during the unwinding process to solve the problem that static electricity will adsorb dust particles onto the material surface, affecting the quality of the product after calendering. Moreover, the semi-conductive butyl rubber buffer strip prepared by the present invention has good airtightness, excellent mechanical properties, good electrical properties, and good heat and aging resistance. When applied to cables, it can absorb and buffer the mechanical impact caused during the installation and transportation of the cables. In addition, the production process is simple, the technical performance is stable, and the practicability is strong.

Description

Technical Field

[0001] The present invention relates to the technical field of cable manufacturing, and more specifically, to a semiconductive butyl rubber buffer tape and a preparation device therefor. Background Art

[0002] With the continuous increase in power demand, the use of high-voltage and extra-high-voltage cables is becoming more and more widespread. During the long-term operation of these cables, due to mechanical impacts caused during installation and transportation, damage is likely to occur between the cable shielding layer and the metal sheath, thereby affecting the service life and performance of the cables.

[0003] The semiconductive butyl rubber buffer tape is a material used in modern power cable systems. In the cable shielding layer, it mainly plays a role in absorbing and buffering mechanical damage caused during installation and transportation. It has excellent resistivity, can make full electrical contact with the metal sheath, and has good elasticity and no corrosion.

[0004] The production process of the semiconductive butyl rubber buffer tape mainly includes coating and calendering. During processing, first, coating is carried out on the base fabric material. Then, after the coating is completed, the coated material is heated and dried. Next, the heated and dried material is wound up. Finally, after the material cools down, calendering is carried out. Therefore, during calendering, the wound-up material needs to be unwound. However, during the unwinding process, the base fabric material will gradually separate from the coating layer. And during winding, the base fabric material and the coating layer will gradually tighten with the extrusion force during the winding process, 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 will be generated between the fluff on the base fabric material and the coating layer during separation. And the static electricity will adsorb dust in the air, resulting in dust adsorbed by static electricity being mixed into the material during the calendering process, affecting the final quality of the product. Summary of the Invention

[0005] A semiconductive butyl rubber buffer tape and a preparation device therefor provided by the present invention aim to solve the following problem: During the existing calendering, it is necessary to unwind and load the base fabric after coating and drying. During the unwinding process, the base fabric material will gradually separate from the coating layer. And during winding, the base fabric material and the coating layer will gradually tighten with the extrusion force during the winding process, 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 will be generated between the fluff on the base fabric material and the coating layer during separation. And the static electricity will adsorb dust in the air, resulting in dust adsorbed by static electricity being mixed into the material during the calendering process, affecting the final quality of the product.

[0006] To achieve the above object, the present invention provides the following technical solution: A preparation device for a semi-conductive butyl rubber buffer strip, comprising: a coating mechanism, a drying mechanism and a calendering mechanism. The coating mechanism is used to coat a coating layer on the surface of a base cloth. The drying mechanism is used to heat and dry the coated base cloth. The calendering mechanism is used to calender a calendered layer on the surface of the coated base cloth;

[0007] The calendering mechanism includes a calendering frame. A unwind roller, a guiding roller and a calendering roller are arranged on the calendering frame. The unwind roller is used to convey the coated base cloth. The guiding roller is used to guide the conveyance of the coated base cloth. The calendering roller is used to calender the calendered layer on the surface of the coated base cloth;

[0008] An electrostatic elimination mechanism is further arranged on the calendering mechanism. The electrostatic elimination mechanism includes a rotatable conductive roller. The conductive roller is in contact with the surface of the coated base cloth. An earthing wire is electrically connected to the conductive roller. The earthing end of the earthing wire is grounded.

[0009] In a preferred embodiment, the electrostatic elimination mechanism further includes an adjustment component. The adjustment component includes a driving member. The driving member is installed on the calendering frame. And a lead screw is installed at the output end of the driving member. A sliding seat is slidably arranged on the calendering frame. The lead screw is in threaded cooperation with the sliding seat. The conductive roller is rotatably installed on the sliding seat through a bearing. One end of the earthing wire away from the earthing end is connected to the bearing.

[0010] In a preferred embodiment, a dust suction mechanism is arranged on the conductive roller. The dust suction mechanism includes a plurality of dust suction holes. The plurality of dust suction holes are uniformly distributed in the circumferential direction on the surface of the conductive roller. An air inlet component is communicated with the end of the conductive roller. The air inlet component sucks dust particles on the surface of the base cloth by suction.

[0011] In a preferred embodiment, a transverse hole is opened at the end of the conductive roller. And the transverse hole is coaxial with the conductive roller. The air inlet ends of the plurality of dust suction holes are all communicated with the transverse hole. A coupling is installed at the end of the conductive roller. An air extraction pipe is communicated with the coupling. The transverse hole is communicated with the air extraction pipe through the coupling. The air extraction end of the air extraction pipe is communicated with an air extraction component.

[0012] In a preferred embodiment, a blocking mechanism is further arranged on the conductive roller. The blocking mechanism includes a plurality of rotatable blocking blocks. The blocking blocks correspond to the dust suction holes one by one. And the plurality of blocking blocks are respectively hinged in the corresponding dust suction holes. When the conductive roller rotates, when one of the dust suction holes is perpendicular to the surface of the base cloth, the blocking block hinged in the dust suction hole blocks the air inlet end of the dust suction hole.

[0013] In a preferred embodiment, the plugging mechanism further includes a plurality of arc-shaped grooves, which correspond to the dust suction holes one by one, and the plurality of arc-shaped grooves are respectively communicated with the corresponding dust suction holes. A round shaft is rotatably arranged in each of the plurality of arc-shaped grooves, and the round shafts correspond to the plug blocks one by one. A plurality of plug blocks are installed on the corresponding round shafts. An elastic member is arranged on the round shaft for the rotational reset of the round shaft. The ends of the plurality of round shafts are fixedly installed with abutting rods, and the plurality of abutting rods all perform a revolution motion along with the rotation of the conductive roller. A retaining rod is fixedly arranged on the sliding seat. The retaining rod is used for making the abutting rod contact with the retaining rod during the revolution of the abutting rod, and making the abutting rod rotate under force along with the movement of the abutting rod when they are in contact.

[0014] In a preferred embodiment, a rubber blocking assembly is further arranged on the calendering frame. The rubber blocking assembly includes an adjusting cross bar fixedly arranged on the calendering frame. A rubber blocking seat is slidably arranged on the adjusting cross bar. A rubber blocking plate is fixedly installed on the rubber blocking seat, and one end of the rubber blocking plate is located between the two calendering rollers.

[0015] In a preferred embodiment, it includes a base fabric, a coating layer and a calendering layer. The coating layer is applied to the surface of the base fabric by coating, and the calendering layer is applied to the surface of the coating layer by calendering.

[0016] 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-based glue, the calendering layer is a butyl rubber, and the butyl rubber is a semi-conductive butyl rubber.

[0017] In a preferred embodiment, the coating layer is formed by coating the solvent-based glue on the surface of the base fabric, and the calendering layer is formed by calendering the semi-conductive butyl rubber on the surface of the coating layer.

[0018] The beneficial effects of the present invention are as follows:

[0019] By providing an electrostatic elimination mechanism, the present invention eliminates the static electricity generated during the unwinding process, so as to solve the problem that static electricity will adsorb dust particles onto the material surface, affecting the quality of the calendered product. In addition, by providing dust suction holes on the conductive roller, the dust particles adsorbed on the material due to static electricity before electrostatic elimination are sucked during the electrostatic elimination process. Moreover, through a blocking mechanism, when the dust suction holes are perpendicular to the material surface, the dust suction holes are blocked to avoid the interruption of the contact between the hole position and the material, resulting in local static electricity residue. The semi-conductive butyl rubber buffer tape prepared by the present invention has a good airtightness, excellent mechanical properties, good electrical properties, and good heat resistance and aging resistance due to the setting of a semi-conductive butyl rubber binder layer and a semi-conductive butyl rubber calendered layer. It can effectively reduce the thermal resistance value of the cable, enhance the heat dissipation performance of the cable, effectively absorb and buffer mechanical shocks, reduce the damage between the shielding layer and the metal sheath, and can effectively shield and weaken the electric field strength, improving the electrical properties of the cable. It can maintain stable performance in both high-temperature and low-temperature environments, improve the overall service life of the cable, is non-corrosive, more environmentally friendly, and has a simple production process, stable technical performance, and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the coating mechanism, drying mechanism, and calendering mechanism used for preparing the semi-conductive butyl rubber buffer tape of the present invention.

[0021] Figure 2 It is a three-dimensional structural diagram of the calendering mechanism of the present invention.

[0022] Figure 3 It is a sectional structural diagram of the calendering mechanism of the present invention.

[0023] Figure 4 It is an enlarged view of the electrostatic elimination mechanism of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the dust suction mechanism of the present invention.

[0025] Figure 6 It is a side view structural diagram of the dust suction mechanism of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the conductive roller moving to a position where the dust suction holes are perpendicular to the base fabric surface of the present invention.

[0027] Figure 8 It is a schematic structural diagram of the blocking mechanism of the present invention.

[0028] Figure 9 It is a schematic diagram of the movement state of the plug block in the blocking mechanism of the present invention.

[0029] Figure 10 For Figure 8 And Figure 9Enlarged view of the contrast structure of the middle part.

[0030] Figure 11 Schematic diagram of the motion state of the abutting rod of the plugging mechanism of the present invention.

[0031] Figure 12 Schematic diagram of the structural composition of the semi-conductive butyl rubber buffer strip of the present invention.

[0032] Figure 13 Flow chart of the preparation method of the semi-conductive butyl rubber buffer strip of the present invention.

[0033] Figure 14 System diagram of the preparation of the semi-conductive butyl rubber buffer strip of the present invention.

[0034] Reference numerals in the drawings are: 1, base fabric; 11, coating layer; 12, calendered layer; 2, coating mechanism; 3, drying mechanism; 4, calendering mechanism; 41, calendering machine frame; 42, unwinding roller; 43, guiding roller; 44, calendering roller; 45, rubber blocking assembly; 451, adjusting cross bar; 452, rubber blocking seat; 453, rubber blocking plate; 5, static elimination mechanism; 51, conductive roller; 52, ground wire; 53, adjusting assembly; 531, driving member; 532, lead screw; 533, sliding seat; 6, dust suction mechanism; 61, dust suction hole; 62, transverse hole; 63, coupling; 64, suction pipe; 7, plugging mechanism; 71, arc groove; 72, round shaft; 73, plug block; 74, abutting rod; 75, blocking rod. Detailed implementation manners

[0035] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0036] Example 1

[0037] Refer to the attached drawings of the specification Figure 12 A semi-conductive butyl rubber buffer strip includes a base fabric 1, a coating layer 11 and a calendered layer 12. The coating layer 11 is applied to the surface of the base fabric 1 by coating, and the calendered layer 12 is applied to the surface of the coating layer 11 by calendering.

[0038] The base fabric 1 is a polyester fabric (such as polyester cloth), the coating layer 11 is a semi-conductive butyl rubber adhesive, the coating layer 11 is a solvent-based glue, and the calendered layer 12 is a butyl rubber, and this butyl rubber is a semi-conductive butyl rubber.

[0039] The coating layer 11 is formed by coating a solvent-based glue on the surface of the base fabric 1, and the calendered layer 12 is formed by calendering a semi-conductive butyl rubber on the surface of the coating layer 11.

[0040] Among them, the semi-conductive butyl rubber adhesive is a special adhesive with conductivity and rubber elasticity, and is widely used in the manufacture of electronics, electrical and shielding materials. Its main components and characteristics can be roughly classified as follows:

[0041] Base rubber: Butyl rubber, providing excellent airtightness, heat resistance and chemical stability.

[0042] Conductive filler: Carbon black, a commonly used conductive filler, can endow the adhesive with conductivity.

[0043] Metal powders (such as silver powder, copper powder): Used to enhance conductivity, but with higher costs.

[0044] Plasticizer: Used to improve flexibility and processability, and commonly used phthalate esters or fatty acid ester compounds.

[0045] Solvent-based system: Using organic solvents such as toluene, ethyl acetate, etc., having a faster drying speed and excellent adhesion.

[0046] Antioxidants and anti-aging agents: To improve the aging resistance of the adhesive.

[0047] Other additives: Such as tackifying resins, cross-linking agents, thickeners, etc., used to adjust viscosity, adhesion and heat resistance.

[0048] Conductivity: Due to the presence of conductive fillers, such adhesives have a certain conductivity and are suitable for applications requiring electromagnetic shielding.

[0049] Weather resistance: The molecular structure of butyl rubber enables it to have excellent weather resistance under different environmental conditions, including resistance to ultraviolet rays, ozone and moisture.

[0050] Chemical stability: Good chemical resistance, suitable for use in harsh environments.

[0051] Flexibility and elasticity: Can absorb mechanical stress and vibration to protect electronic components.

[0052] Airtightness: Excellent airtightness makes it suitable for applications that require preventing air and moisture penetration.

[0053] Among them, the main components of the solvent-based adhesive are as follows:

[0054] Solvent-based adhesive:

[0055] Butyl rubber: Dissolved in organic solvents and serving as the main body of the adhesive.

[0056] Organic solvents: Such as toluene, ethyl acetate, etc., used to dissolve rubber and adjust viscosity.

[0057] Conductive fillers: Such as carbon black, graphene, etc., to enhance conductive performance.

[0058] Plasticizer: Improve flexibility and adhesion.

[0059] Stabilizer: Prevent degradation and deterioration.

[0060] Example 2

[0061] Based on the semi-conductive butyl rubber buffer tape provided in Example 1, the present invention also provides a preparation process for the semi-conductive butyl rubber buffer tape, referring to the attached Figure 13 description, which includes the following steps:

[0062] Step 1, make the base fabric 1. According to the specification requirements of the product, select a polyester fabric to make the qualified base fabric 1;

[0063] Step 2, clean the surface of the base fabric 1 to remove debris;

[0064] Step 3, apply the coating layer 11. Through the coating mechanism 2, apply a solvent-based adhesive to the base fabric 1, and then dry it through the drying mechanism 3 to form the coating layer 11;

[0065] Step 4, apply the calendered layer 12. Through the calendering mechanism 4, calender the base fabric 1 after coating and drying to form the calendered layer 12;

[0066] Step 5, test the airtightness, mechanical properties, electrical properties, and heat resistance and aging resistance of the semi-conductive butyl rubber buffer tape product.

[0067] It should be noted that the semi-conductive butyl rubber buffer tape prepared by the present invention, due to the setting of the semi-conductive butyl rubber binder layer and the semi-conductive butyl rubber calendered layer, has good airtightness, excellent mechanical properties, good electrical properties, and good heat resistance and aging resistance of the product. It can effectively reduce the thermal resistance value of the cable, enhance the heat dissipation performance of the cable, can effectively absorb and buffer mechanical impacts, reduce the damage between the shielding layer and the metal sheath, and can effectively shield and weaken the electric field strength, improve the electrical properties of the cable, maintain stable performance in both high-temperature and low-temperature environments, improve the overall service life of the cable, is non-corrosive, more environmentally friendly, and has a simple production process, stable technical performance, and strong practicability.

[0068] Based on the above implementation manner, the present invention also provides a preparation device for the semi-conductive butyl rubber buffer tape, referring to the attached Figure 14 description, which 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 on the surface of the 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 the calendered layer 12 on the surface of the coated base fabric 1;

[0069] The calendering mechanism 4 includes a calendering machine frame 41, on which a unwind roller 42, a guiding roller 43 and a calendering roller 44 are arranged. The unwind roller 42 is used to convey the coated base fabric 1, the guiding roller 43 is used to guide the conveyance 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.

[0070] The preparation device of the present invention improves the production efficiency of the semi-conductive butyl rubber buffer belt, reduces the production cost, and enhances the airtightness, mechanical properties, electrical properties, heat resistance and aging resistance of the product.

[0071] Example 3

[0072] In the above embodiment, for the production process of the semi-conductive butyl rubber buffer belt provided by the present invention, the key equipment determining its production quality mainly includes the coating mechanism 2 and the calendering mechanism 4. In the production of the corresponding semi-conductive butyl rubber buffer belt in the prior art, in order to ensure the product of the semi-conductive butyl rubber buffer belt, it is usually to wind up the coated material after coating, and then transport it to the calendering mechanism 4 for calendering after the coated material is fully cured. 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 occupying the time of on-site equipment and improves flexibility to varying degrees, and is suitable for batch production.

[0073] Among them, the fabric formed by the polyester fabric used for the base fabric 1 itself will form a relatively large number of fluff structures, which is inevitable for textiles. During the unwinding process, the base fabric 1 will gradually separate from the coating layer 11. And during winding, the base fabric 1 and the coating layer 11 will be squeezed and tightened during the winding process, resulting in extrusion contact between the base fabric 1 and the coating layer 11. Therefore, during unwinding, as the base fabric 1 and the coating layer 11 gradually separate, static electricity will be generated between the fluff on the base fabric 1 and the coating layer 11 during separation. The static electricity will adsorb particles or dust in the air, resulting in the problem that the particles and dust adsorbed by static electricity will be mixed into the material during the calendering process, affecting the quality of the final product. For this reason, the present invention provides an electrostatic elimination mechanism 5 for eliminating the generated static electricity during the unwinding process. Specifically, refer to the attached drawings of the specification Figure 3 and Figure 4The calendering mechanism 4 is also provided 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, and 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 the two coatings and drying is guided by a guide roller 43 and a calendering roller 44, so that the base fabric 1 after the two coatings and drying is in a straightened state. In the process of unwinding and conveying the base fabric 1 after the two coatings and drying, the conductive roller 51 is brought into contact with the surface of the base fabric 1 after the two coatings and drying, so that the static electricity is transferred from the base fabric 1 after the two coatings and drying to the conductive roller 51, and then the static electricity is discharged through the grounding wire 52. In order to ensure the stable contact between the conductive roller 51 and the base fabric 1 after the two coatings and drying, the present invention further proposes an adjustment component 53, which is used to drive the conductive roller 51 to move in a direction close to the base fabric 1 after the two coatings and drying. For details, refer to the attached manual Figure 3 The adjusting assembly 53 includes a driving member 531, which is mounted on the 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, and the screw rod 532 is threadedly connected to the slide seat 533. The conductive roller 51 is rotatably mounted on the slide seat 533 through a bearing, and the end of the grounding wire 52 away from the grounding end is connected to the bearing. The driving member 531 is a motor, which drives the screw rod 532 to rotate through the motor, and is threadedly connected to the slide seat 533 through the screw rod 532, so that the slide seat 533 can drive the conductive roller 51 to move in the direction close to the base fabric 1 after the two coatings and drying, thereby ensuring the stable contact between the conductive roller 51 and the base fabric 1 after the two coatings and drying. However, in the above-mentioned technique, In the technical solution, in the process of unwinding the base fabric 1 after being coated and dried twice, it is first unwound, and the static electricity generated on it is eliminated during the unwinding process. Therefore, in the process from unwinding to eliminating static electricity, static electricity exists on the surface of the base fabric 1 after being coated and dried twice, and dust particles are inevitably present in the factory production process. Therefore, in this section, the problem of dust particles being adsorbed on the surface of the base fabric 1 after being coated and dried twice due to static electricity will occur. Although there is no static electricity on the base fabric 1 after being coated and dried twice after static electricity elimination, the dust particles adsorbed by static electricity still remain on the surface of the base fabric 1 after being coated and dried twice, and the remaining dust particles will still affect the quality of the finished product.

[0074] To this end, the present invention also provides the following technical solutions, specifically, refer to the attached specification Figures 5 to 6, a dust suction mechanism 6 is provided on the conductive roller 51. The dust suction mechanism 6 includes a plurality of dust suction holes 61 which are evenly distributed in the circumferential direction on the surface of the conductive roller 51. An air inlet assembly is connected to the end of the conductive roller 51. The air inlet assembly sucks the dust particles on the surface of the base fabric 1 through suction. 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 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, and an air suction pipe 64 is connected to the coupling 63. The transverse hole 62 is connected to the air suction pipe 64 through the coupling 63. The air suction end of the air suction pipe 64 is connected to an air extraction assembly. The air extraction assembly can be an air extraction pump. The coupling 63 is fixedly arranged on the sliding seat 533, and the two ends of the coupling 63 are respectively rotatably connected to the air suction pipe 64 and the conductive roller 51. The air suction pipe 64 is connected to the conductive roller 51 through the coupling 63. During the electrostatic elimination process, through the suction of the air extraction pump, the dust particles remaining on the surface of the base fabric 1 can enter the transverse hole 62 through the dust suction holes 61, and the sucked dust particles are discharged through the air suction pipe 64 to solve the problem that the remaining dust particles will still affect the quality of the finished product.

[0075] In the above technical solution, the dust suction mechanism 6 sucks the dust particles remaining on the surface of the base fabric 1 after two coatings and drying through the air extraction assembly and by opening dust suction holes 61 on the conductive roller 51. Although it can adsorb and discharge the remaining dust particles, due to the dust suction holes 61 opened on the conductive roller 51, during the rotation of the conductive roller 51, when the air inlet holes of the dust suction holes 61 on the conductive roller 51 contact the surface of the base fabric 1 after two coatings and drying, as Figure 7 shown, it is a schematic structural diagram of the dust suction hole 61 perpendicular to the surface of the base fabric 1 after two coatings and drying. a is the contact position between the conductive roller 51 and the surface of the base fabric 1 after two coatings and drying. The position of the dust suction holes 61 opened on the conductive roller 51 does not contact the surface of the base fabric 1 after two coatings and drying. The edge of the dust suction hole 61 will cause abrasions or scratches on the surface of the base fabric 1 after two coatings and drying. And the existence of the dust suction holes 61 means that the contact with the material at these hole positions will be interrupted, resulting in uneven electrostatic elimination. When the material cannot contact the conductive part, local static electricity will remain and the static electricity cannot be fully eliminated. In addition, due to the suction force in the dust suction holes 61, when the dust suction holes 61 are directed at the surface of the base fabric 1 after two coatings and drying, there is a problem that a suction force is applied to the surface of the base fabric 1 after two coatings and drying at the positions of the dust suction holes 61, causing deformation at these positions.

[0076] Therefore, the present invention also provides the following technical solutions. Specifically, referring to the accompanying drawings of the specification Figures 8 to 10, a blocking mechanism 7 is further provided on the conductive roller 51. The blocking mechanism 7 includes a plurality of rotatable blocking blocks 73, and the blocking blocks 73 correspond to the dust suction holes 61 one by one. The plurality of blocking blocks 73 are respectively hinged in the corresponding dust suction holes 61. 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 hinged in the dust suction hole 61 blocks the air inlet end of the dust suction hole 61. The blocking block 73 and the conductive roller 51 are made of the same conductive material. By hingedly arranging the blocking block 73 in the dust suction hole 61, when the dust suction hole 61 is perpendicular to the surface of the base fabric 1 after coating and drying, the air inlet end of the dust suction hole 61 is blocked by rotating the blocking block 73, avoiding abrasion or scratches on the surface of the base fabric 1 after two coatings and drying by the edge of the dust suction hole 61. At the same time, it avoids the problem of local static electricity residue caused by the contact between the hole position and the surface of the base fabric 1 after two coatings and drying. In addition, since it blocks the air inlet end of the dust suction hole 61, there is also no problem of deformation at this position caused by applying suction to the surface of the base fabric 1 after two coatings and drying, ensuring its production quality.

[0077] Further, referring to the attached drawings of the specification Figure 11, the plugging mechanism 7 further includes a plurality of arc-shaped grooves 71, which correspond to the dust suction holes 61 one by one, and the plurality of arc-shaped grooves 71 are respectively communicated with the corresponding dust suction holes 61. A round shaft 72 is rotatably arranged in each of the plurality of arc-shaped grooves 71, and the round shafts 72 correspond to the plug blocks 73 one by one, and the plurality of plug blocks 73 are installed on the corresponding round shafts 72. An elastic member is arranged on the round shaft 72 for the rotational reset of the round shaft 72. The ends of the plurality of round shafts 72 are fixedly installed with abutting rods 74, and the plurality of abutting rods 74 all make a revolution movement along with the rotation of the conductive roller 51. A stop rod 75 is fixedly arranged on the sliding seat 533. The stop rod 75 is used to make the abutting rod 74 contact with the stop rod 75 during the revolution of the abutting rod 74, and when contacting, along with the movement of the abutting rod 74, the abutting rod 74 is forced to rotate. The elastic member can be a torsion spring, which is installed on the round shaft 72 and is located in the arc-shaped groove 71 for the reset rotation movement of the round shaft 72. When the conductive roller 51 is rotating, when the abutting rod 74 does not contact the stop rod 75, the movement track of the end of the plurality of abutting rods 74 away from the corresponding round shaft 72 is located on the side of the stop rod 75 away from the round shaft 72. During the rotation of the conductive roller 51, its abutting rod 74 will approach the stop rod 75 and contact the stop rod 75. When contacting, the conductive roller 51 continues to rotate, and since the stop rod 75 is fixedly arranged, the stop rod 75 will drive the round shaft 72 to rotate, so that the round shaft 72 can drive the plug block 73 to rotate when rotating until the dust suction hole 61 is perpendicular to the surface of the base cloth 1 after being coated and dried twice, and its plug block 73 completely plugs the air inlet hole of the dust suction hole 61. And a plurality of dust suction holes 61 can be arranged in the radial direction of the conductive roller 51. The plug blocks 73 on the same horizontal axis are synchronously driven by one round shaft 72. When the dust suction hole 61 on one horizontal axis is perpendicular to the surface of the base cloth 1 after being coated and dried twice, the dust suction holes 61 on other horizontal axes are still in a communicating state and can still suck dust particles. And when the plugged dust suction hole 61 is far away from the surface of the base cloth 1 after being coated and dried twice, its round shaft 72 will also be far away from the stop rod 75. At this time, under the action of the torsion spring, its round shaft 72 can rotate in a reset manner and drive the plug block 73 to reset, so that the dust suction hole 61 can be in a communicating state after being far away from the surface of the base cloth 1 after being coated and dried twice, further improving the product quality.

[0078] Further, referring to the attached drawings of the specification Figure 2 , a rubber blocking assembly 45 is further arranged on the calendering frame 41. The rubber blocking assembly 45 includes an adjusting cross bar 451, the adjusting cross bar 451 is fixedly arranged on the calendering frame 41, a rubber blocking seat 452 is slidably arranged on the adjusting cross bar 451, and a rubber blocking plate 453 is fixedly installed on the rubber blocking seat 452. One end of the rubber blocking plate 453 is located between the two calendering rollers 44.

[0079] It should be noted that fastening bolts are provided on the rubber blocking seat 452, and the end of the fastening bolt is in movable contact with the adjusting cross bar 451. After the position of the rubber blocking seat 452 is adjusted, the end of the fastening bolt can be made to contact the adjusting cross bar 451 by adjusting the fastening bolt, so as to ensure the positioning and fixation of the rubber blocking plate 453. By providing the rubber blocking plate 453, the lateral flow of the rubber compound can be effectively restricted, thereby ensuring that the rubber compound remains on the predetermined path during the calendering process, improving the uniformity and quality of the product. Moreover, by adjusting the position of the rubber blocking seat 452 to adjust the position of the rubber blocking plate 453, the thickness of the rubber compound flowing through can be controlled, thus helping to achieve precise control of the thickness of the calendered product. In addition, the rubber blocking plate 453 helps to prevent the rubber compound from overflowing from both sides, ensuring the cleanliness and efficiency of the calendering process. And by precisely controlling the flow and thickness of the rubber compound, the generation of waste can be reduced, the production efficiency can be improved, and the waste of raw materials can be reduced.

[0080] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A device for preparing 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 elimination mechanism (5), the static 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; 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; 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).

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: 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.

4. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 3, 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).

5. The device for preparing a semi-conductive butyl rubber buffer tape according to claim 4, 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).

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