Waterproof coiled material production method

Abstract

The invention discloses a waterproof roll production method which comprises the following steps: S1, material preparation and mixing: selecting a base material and a waterproof material, adding a modifier, a filler and an auxiliary agent into the base material in proportion, molding the mixed material into a film-shaped or cloth-shaped base material through an extruder or casting equipment, and subsequently performing pre-curing treatment; s2, a coating process: uniformly coating the surface of the base material with the mixed waterproof material by using a coating machine, and carrying out multi-layer coating and curing; s3, surface treatment is conducted, specifically, a fine sand protection layer is added to the surface of the last coating layer, and trimming treatment is conducted; and S4, coiled material forming, wherein cooling is conducted through a cooling roller, the shaped base material is solidified, and index detection is conducted on the finished coiled material subsequently. By arranging the sand homogenizing structure, the throwing amount of fine sand can be adaptively adjusted according to the conveying speed of the base material, so that uniform distribution of the fine sand on the base material is ensured, the wear resistance and the aging resistance of the waterproof roll are enhanced, and the consistency of the product quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof coiled materials, in particular to a method for producing a waterproof coiled material. Background Art

[0002] Waterproof membrane is a flexible building material product used in building walls, roofs, tunnels, roads, landfills, etc. It mainly plays the role of resisting external rainwater and groundwater leakage. It is an important component of the leak-free connection between the project foundation and the building. It is the first barrier to waterproofing the entire project and plays a vital role in the waterproofing effect of the entire project.

[0003] The existing Chinese patent with patent number CN115464969A discloses a waterproofing coiled material production equipment, including a power box and a plurality of roller groups; the power box is provided with a plurality of power wheel groups connected to the roller groups; the roller group includes a first material roller and a second material roller, and a first tensioning roller and a second tensioning roller are provided between the first material roller and the second material roller; a heating assembly is provided in the middle of the roller group, the heating assembly includes a heating plate and a heating tube, the heating tube is embedded in the heating plate, the heating plate is hollow, and the upper end of the heating plate is covered with a pedal; a cutting mechanism is provided at the upper end of the power box, the cutting mechanism includes a sliding track and a cutting knife, and the cutting knife clamps the sliding track through a guide wheel group. Thus, the present invention realizes the purpose of rapid production of waterproofing coiled materials by setting a power box to drive the rotation of the roller group, using a plurality of material rollers and tensioning rollers, and a heating assembly.

[0004] During the production of existing waterproof membranes, it is necessary to carry out coating operations and surface treatment operations on the substrate. During the surface treatment operation, fine sand can be sprinkled on the surface of the coating layer before it is completely cured to improve the wear resistance of the membrane. In the existing process of sprinkling fine sand, it is difficult to adaptively adjust according to the conveying speed of the coated substrate. Therefore, during the production process, it may be necessary to frequently stop the machine to adjust parameters according to the conveying speed and the amount of fine sand sprayed, thereby affecting production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a method for producing a waterproof roll material, which has the advantage of being able to adaptively adjust the amount of fine sand added according to the substrate conveying speed, thereby solving the problem that the production efficiency may be affected due to the need to frequently stop the machine to adjust parameters according to the amount of fine sand sprayed according to the conveying speed.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for producing a waterproof roll material, comprising the following steps: S1. Material preparation and mixing: select base material and waterproof material, add modifier, filler and additive to the base material in proportion, mix by high-speed stirring equipment, form the mixed material into a film-like or cloth-like substrate by extruder or casting equipment, and then perform pre-curing treatment; S2, coating process: use a coating machine to evenly coat the mixed waterproof material on the surface of the substrate, and perform multi-layer coating and curing; S3, surface treatment: adding a fine sand protective layer on the surface of the last coating layer and performing trimming. In this step, the amount of fine sand added is adaptively adjusted according to the conveying speed of the substrate by the sand leveling structure; S4, coil forming: The substrate is cooled and solidified by cooling rollers, then rolled into a roll, and the finished coil is subsequently tested for thickness and strength indicators.

[0007] Preferably, the method comprises a base for conveying the coated substrate and a sand trough for adding fine sand to the coated substrate, the sand trough comprises an integrally formed rectangular discharge portion on the side facing the substrate, and a sand leveling structure for adjusting the amount of fine sand added according to the conveying speed of the substrate is provided on the base; The sand leveling structure comprises an L-shaped baffle plate arranged on a rectangular discharge portion, a positioning block is fixedly connected to the rectangular discharge portion, a rectangular groove is formed on the rectangular discharge portion and the positioning block for the L-shaped baffle plate to slide horizontally through, and a guide component for controlling the conveying speed of the substrate is provided on one side of the sand groove; The rectangular discharge portion is provided with a centrifugal assembly for adjusting the horizontal lateral position of the side extension portion according to the substrate conveying speed to change the opening size of the rectangular discharge portion; A leveling component is provided on one side of the rectangular discharge portion away from the guide component to drive the fine sand to be evenly distributed on the base material.

[0008] Preferably, the guide assembly comprises two sets of side frames fixedly connected to the base and respectively located on one side of the substrate, and the two sets of side frames are respectively provided with a set of side seats and a groove body for the side seats to slide vertically; A piercing cylinder and a guiding cylinder are provided between the two groups of side frames, and the two ends of the piercing cylinder and the guiding cylinder are respectively rotated on the side frames and the side seats with fixed axes; The outer peripheral surface of the puncture tube is fixedly connected with a plurality of groups of micro-diameter needles arranged at equal distances. The substrate is located between the puncture tube and the guide tube, and the coating layer thereon faces one side of the puncture tube.

[0009] Preferably, the L-shaped baffle includes an integrally formed side extension portion and an inner inclined portion, and a reset component is provided on the rectangular discharge portion to drive the L-shaped baffle to block its opening.

[0010] Preferably, the centrifugal assembly comprises a hexagonal centrifugal wheel which is fixedly rotated on a rectangular discharge portion and rotates freely in a vertical direction, the outer peripheral surface of the hexagonal centrifugal wheel comprises a plurality of annular convex parts which are integrally formed and arranged at equal distances, and an axial extension rod is provided on the annular convex part and an axial groove for sliding of the axial extension rod is provided; A centrifugal spring is arranged in the axial groove, and the two ends of the centrifugal spring are respectively fixedly connected to the hexagonal centrifugal wheel and the shaft extension rod. The end of the shaft extension rod away from the hexagonal centrifugal wheel is fixedly connected to a pressing arc plate, and the pressing arc plate and the side extension part are in sliding contact with each other.

[0011] Preferably, the reset assembly includes multiple groups of directional columns fixedly connected to the rectangular discharge portion, the multiple groups of directional columns radially slide through the L-shaped baffle plate and are provided with a reset spring on the outer peripheral surface, and the two ends of the reset spring are respectively fixedly connected to the L-shaped baffle plate and the rectangular discharge portion.

[0012] Preferably, the flattening assembly comprises a limit plate fixedly connected to the base, the limit plate is provided with a longitudinal slide which reciprocates in the horizontal longitudinal direction and is provided with two grooves for the longitudinal slide to slide horizontally, the longitudinal slide is provided with a gear which rotates freely in the vertical direction, the gear rotates on the longitudinal slide with a fixed axis and is coaxially fixed with a brush cylinder; The limiting plate is fixedly connected to a side facing the gear with a plurality of connecting blocks, and a side of the plurality of connecting blocks away from the limiting plate is fixedly connected to a rack meshing with the gear.

[0013] Preferably, a rear wheel is fixedly rotated on the base and a reciprocating screw is coaxially fixed to the rear wheel, and the reciprocating screw is threadedly connected to the longitudinal slide seat; The hexagonal centrifugal wheel is coaxially fixed with a middle wheel, and the middle wheel rotates on a fixed axis on the base. The guide cylinder is coaxially fixed with a front wheel. Two sets of belts are arranged on the base, and the middle wheel is respectively connected to the rear wheel and the front wheel through the two sets of belts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention can adaptively adjust the amount of fine sand added according to the substrate conveying speed by arranging a sand leveling structure, thereby ensuring uniform distribution of the fine sand on the substrate, enhancing the wear resistance and anti-aging performance of the waterproof coiled material, and ensuring consistency of product quality.

[0015] The present invention sets a guide component, uses a micro-diameter needle to puncture bubbles that may exist on the coating layer, and applies a certain pressure to the coating layer, so that the coating can be evenly distributed on the substrate, reducing the phenomenon of local excessive thickness or thinness, and at the same time achieving a "micro-anchoring" effect, thereby increasing the adhesion of the coating, enhancing the durability and stability of the coating, and reducing the possibility of coating peeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the components where the L-shaped baffle of the present invention is located; Figure 3 This is a schematic diagram of the components where the hexagonal centrifugal wheel of the present invention is located; Figure 4 It is a schematic diagram of the components where the centrifugal spring of the present invention is located; Figure 5 This is a schematic diagram of the components where the micro-diameter needle of the present invention is located; Figure 6 This is a schematic diagram of the components where the directional column of the present invention is located; Figure 7 This is a schematic diagram of the components where the longitudinal slide seat of the present invention is located; Figure 8 For the present invention Figure 6 Enlarged view of point A in the middle; Fig. 9 The present invention is a schematic diagram of a process for producing a waterproof coiled material.

[0017] In the figure: 1, base; 2, sand trough; 201, rectangular discharge part; 3, substrate; 4, side frame; 5, thorn cylinder; 6, side seat; 7, guide cylinder; 8, micro-diameter needle; 9, front wheel; 10, middle wheel; 11, hexagonal centrifugal wheel; 12, annular convex part; 13, axial extension rod; 14, centrifugal spring; 15, pressure arc plate; 16, axial groove; 17, L-shaped baffle plate; 171, side extension part; 172, inner oblique part; 18, directional column; 19, reset spring; 20, positioning block; 21, rear wheel; 22, reciprocating screw; 23, longitudinal slide seat; 24, gear; 25, limit plate; 26, rack; 27, brush cylinder; 28, connecting block. DETAILED DESCRIPTION

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

[0019] See also Figures 1 to 9 The present invention provides a technical solution: a method for producing a waterproof roll material, comprising the following steps: S1, material preparation and mixing: select base material and waterproof material, add modifier, filler and auxiliary agent to the base material in proportion, mix them by high-speed stirring equipment, form the mixed material into a film-like or cloth-like substrate 3 by extruder or casting equipment, and then perform pre-curing treatment; S2, coating process: using a coating machine to evenly coat the mixed waterproof material on the surface of the substrate 3, and perform multi-layer coating and curing; S3, surface treatment: adding a fine sand protective layer on the surface of the last coating layer and performing trimming. In this step, the amount of fine sand added is adaptively adjusted according to the conveying speed of the substrate 3 by the sand leveling structure; S4, coil forming: cooling and solidifying the shaped substrate 3 through a cooling roller, and then rolling it into a roll, and subsequently testing the thickness and strength index of the finished coil.

[0020] like Figure 1 , Figure 2 and Fig. 9 As shown, a suitable material, such as a polyester base cloth or a glass fiber base cloth, is selected to ensure that it has good strength and stability, and a modifier (such as SBS, APP, etc.), a filler (such as calcium carbonate, talcum powder, etc.) and an auxiliary agent (such as a plasticizer, a stabilizer, etc.) are added to the base material in proportion, and these materials are fully mixed by a high-speed stirring device. The mixed material is formed into a film-like or cloth-like substrate 3 by an extruder or a casting device, and a pre-curing treatment is performed to increase its strength and stability, so as to facilitate the operation of subsequent processes.

[0021] Use a coating machine to evenly coat the mixed waterproof material on the surface of the substrate 3. According to the requirements of the waterproof membrane, multiple layers of coating are usually required, and each layer needs to be cured after coating. The curing method can use hot air or ultraviolet rays to ensure that each waterproof layer has good adhesion and durability.

[0022] When the last coating layer has not yet completely solidified, a protective layer of fine sand is added to its surface to enhance the wear resistance and anti-aging properties of the waterproof membrane. In this step, a sand-leveling structure is used to adaptively adjust the amount of fine sand added according to the conveying speed of the substrate 3, and ensure that the fine sand is evenly distributed on the substrate 3. Afterwards, the membrane is trimmed to remove excess parts to make it neat and beautiful.

[0023] After coating and surface treatment, the substrate 3 is cooled by a cooling roller to solidify it. The cooled substrate 3 is rolled into a roll by a roll machine for easy storage and transportation. Finally, the finished roll is quality inspected, including thickness, strength, waterproof performance and other indicators to ensure that the product meets the standard requirements.

[0024] One of the more preferred embodiments includes a base 1 for conveying the coated substrate 3, and a sand trough 2 for adding fine sand to the coated substrate 3, the sand trough 2 includes an integrally formed rectangular discharge portion 201 on the side facing the substrate 3, and a sand leveling structure for adjusting the amount of fine sand added according to the conveying speed of the substrate 3 is provided on the base 1; The sand leveling structure includes an L-shaped baffle plate 17 disposed on a rectangular discharge portion 201, a positioning block 20 is fixedly connected to the rectangular discharge portion 201, and a rectangular groove for the L-shaped baffle plate 17 to slide horizontally through is formed on the rectangular discharge portion 201 and the positioning block 20, and a guide component for controlling the conveying speed of the substrate 3 is provided on one side of the sand groove 2; The rectangular discharge portion 201 is provided with a centrifugal assembly for adjusting the horizontal lateral position of the side extension portion 171 according to the conveying speed of the substrate 3 to change the opening size of the rectangular discharge portion 201; A leveling component is provided on one side of the rectangular discharge portion 201 away from the guide component to drive the fine sand to be evenly distributed on the substrate 3.

[0025] like Figure 1-Figure 3 As shown, in the production process of the waterproof membrane, after the coating operation is performed on the substrate 3, the coated substrate 3 is transported to the rectangular discharge portion 201 in the sand trough 2 by driving the guide assembly. At the same time, a horizontally arranged L-shaped baffle 17 is provided at the rectangular discharge portion 201. The L-shaped baffle 17 can block the open end of the rectangular discharge portion 201. The size of the open end of the rectangular discharge portion 201 is adjusted by the horizontal movement of the L-shaped baffle 17, thereby changing the amount of fine sand in the sand trough 2 placed on the substrate 3 per unit time.

[0026] At the same time, when the conveying speed of the coated substrate 3 changes, under the action of the centrifugal assembly, the horizontal position of the L-shaped baffle 17 can change synchronously, thereby adjusting the opening end size of the rectangular discharge portion 201, thereby changing the amount of fine sand delivered per unit time.

[0027] During actual use, when the conveying speed of the substrate 3 becomes faster, the L-shaped baffle 17 moves away from the rectangular discharge portion 201 in the horizontal direction, thereby increasing the size of the open end of the rectangular discharge portion 201, and then in unit time, the length of the substrate 3 passing under the rectangular discharge portion 201 increases, and the amount of fine sand added is adaptively increased to ensure that the fine sand can be relatively evenly distributed on the substrate 3, thereby ensuring the wear resistance and surface quality of the waterproof membrane after production.

[0028] At the same time, when the fine sand is put onto the surface of the coated substrate 3, since the substrate 3 has a certain width, in order to further improve the uniformity of the fine sand on the surface of the substrate 3, the fine sand put onto the surface of the substrate 3 is reciprocatedly smoothed by a leveling component, thereby ensuring that the fine sand particles are evenly distributed on the surface of the coating layer, thereby improving production efficiency and quality.

[0029] Furthermore, the guide assembly includes two sets of side frames 4 fixedly connected to the base 1 and respectively located on one side of the substrate 3, and the two sets of side frames 4 are respectively provided with a set of side seats 6 and a slot body for the side seats 6 to slide vertically; A puncture tube 5 and a guide tube 7 are provided between the two groups of side frames 4. The two ends of the puncture tube 5 and the guide tube 7 are respectively rotated on the side frames 4 and the side seats 6. The outer peripheral surface of the puncture tube 5 is fixedly connected to multiple groups of equidistantly arranged micro-diameter needles 8. The substrate 3 is located between the puncture tube 5 and the guide tube 7 and the coating layer thereon faces the side of the puncture tube 5.

[0030] like Figure 1 , Figure 2 and Figure 5 As shown, the substrate 3 is located between the pricking cylinder 5 and the guiding cylinder 7. The substrate 3 is driven to move toward the rectangular discharge portion 201 by the vertical rotation process of the guiding cylinder 7, and the conveying speed of the substrate 3 is changed by changing the rotation speed of the guiding cylinder 7.

[0031] At the same time, in actual use, the spacing between the puncture tube 5 and the guide tube 7 is adjusted by the processing thickness of the substrate 3 and the thickness of the coating layer, that is, the horizontal height of the side seat 6 is adjusted to ensure that the substrate 3 can pass through the position of the guide tube 7 and drive the puncture tube 5 to rotate.

[0032] At the same time, a plurality of groups of micro-diameter needles 8 are provided on the outer peripheral surface of the piercing tube 5. During the conveying process of the substrate 3, the piercing tube 5 rolls on the coating layer on the substrate 3, wherein the micro-diameter needles 8 can puncture the bubbles that may exist on the coating layer and exert a certain pressure on the coating layer, thereby making the coating evenly distributed on the substrate 3 and reducing the phenomenon of local excessive thickness or thinness.

[0033] Moreover, the rotation process of the pricking cylinder 5 is continuous, and the micro-diameter needle 8 will apply relatively uniform pressure to the coating layer during the rolling process, and produce tiny indentations on the surface of the coating layer, wherein these indentations will not destroy the overall structure of the coating, but will increase the roughness of the coating surface, and these indentations can increase the curing process of the coating layer, because the paint in the indentations is embedded in the surface of the substrate 3 or the previous coating, thereby achieving a similar "micro-anchoring" effect, thereby increasing the adhesion of the coating, enhancing the durability and stability of the coating, and reducing the possibility of coating peeling.

[0034] It should also be noted that after the last side coating operation, small indentations are generated on the outermost coating of the substrate 3 through the multiple groups of micro-diameter needles 8 arranged on the piercing tube 5. In the subsequent sandblasting process, the rough outer surface can better grasp the fine sand particles to prevent the fine sand from falling off during the coating curing process. In addition, a "micro-anchoring" effect can be formed between the small indentations and the fine sand particles. The fine sand particles are embedded in the indentations, which improves the adhesion and increases the wear resistance and stability of the coating layer.

[0035] Based on the guide assembly embodiment, the L-shaped baffle 17 includes an integrally formed side extension portion 171 and an inner oblique portion 172, and a reset assembly for driving the L-shaped baffle 17 to block its opening is provided on the rectangular discharge portion 201; The centrifugal assembly comprises a hexagonal centrifugal wheel 11 which is fixedly rotated on a rectangular discharge portion 201 and rotates freely in a vertical direction. The outer peripheral surface of the hexagonal centrifugal wheel 11 comprises a plurality of annular protrusions 12 which are integrally formed and arranged at equal intervals. The annular protrusions 12 are provided with an axial extension rod 13 and an axial groove 16 for the axial extension rod 13 to slide. A centrifugal spring 14 is disposed in the axial groove 16, and the two ends of the centrifugal spring 14 are respectively fixedly connected to the hexagonal centrifugal wheel 11 and the shaft extension rod 13, and the end of the shaft extension rod 13 away from the hexagonal centrifugal wheel 11 is fixedly connected to the pressing arc plate 15, and the pressing arc plate 15 and the side extension part 171 are in sliding contact with each other; The reset assembly includes multiple groups of directional columns 18 fixedly connected to the rectangular discharge portion 201. The multiple groups of directional columns 18 radially slide through the L-shaped baffle plate 17 and are covered with a reset spring 19 on the outer circumference. The two ends of the reset spring 19 are respectively fixedly connected to the L-shaped baffle plate 17 and the rectangular discharge portion 201.

[0036] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, when the guide assembly is running, it can drive the hexagonal centrifugal wheel 11 to rotate freely in the vertical direction, wherein the hexagonal centrifugal wheel 11 is provided with multiple groups of axial extension rods 13 and pressure arc plates 15, and a centrifugal spring 14 is provided between the hexagonal centrifugal wheel 11 and the axial extension rods 13. Therefore, when the hexagonal centrifugal wheel 11 rotates, the pressure arc plate 15 will gradually move away from the hexagonal centrifugal wheel 11 under the action of centrifugal force, thereby driving the centrifugal spring 14 to extend and deform, and the elongation of the centrifugal spring 14 will increase with the increase of the rotation speed of the hexagonal centrifugal wheel 11.

[0037] At the same time, when the multiple groups of pressure arc plates 15 rotate synchronously with the hexagonal centrifugal wheel 11, they are in contact with the side extension part 171, and then under the action of centrifugal force, they can drive the L-shaped blocking plate 17 to move away from the rectangular discharge part 201, thereby changing the opening size of the rectangular discharge part 201 to achieve the purpose of changing the amount of fine sand released.

[0038] At the same time, when the machine is shut down, the hexagonal centrifugal wheel 11 stops rotating. At this time, the centrifugal spring 14 restores its elastic deformation, and under the action of the elastic potential energy of the reset spring 19, the L-shaped baffle 17 is driven to re-block the open end of the rectangular discharge portion 201, thereby preventing fine sand from falling from the rectangular discharge portion 201. Therefore, when the machine is shut down, the fine sand delivery process can be automatically stopped without manual control, and the rotation speed of the hexagonal centrifugal wheel 11 is adjusted by the conveying speed of the substrate 3, thereby changing the horizontal displacement of the L-shaped baffle 17, thereby achieving the purpose of changing the amount of fine sand delivered, without the need to frequently adjust equipment parameters, thereby improving the continuity and stability of production.

[0039] On the basis of the centrifugal assembly embodiment, the flattening assembly includes a limit plate 25 fixedly connected to the base 1, the limit plate 25 is provided with a longitudinal slide 23 that reciprocates in the horizontal longitudinal direction and is provided with a second slot for the longitudinal slide 23 to slide horizontally, the longitudinal slide 23 is provided with a gear 24 that rotates freely in the vertical direction, the gear 24 rotates on the longitudinal slide 23 with a fixed axis and a brush cylinder 27 is coaxially fixed thereto; The limiting plate 25 is fixedly connected to a side facing the gear 24 with a plurality of connecting blocks 28 , and a side of the plurality of connecting blocks 28 away from the limiting plate 25 is fixedly connected to a rack 26 meshing with the gear 24 .

[0040] A rear wheel 21 is fixedly rotated on the base 1 and a reciprocating screw 22 is coaxially fixed to the rear wheel 21. The reciprocating screw 22 is threadedly connected to the longitudinal slide 23. A center wheel 10 is coaxially fixed to the hexagonal centrifugal wheel 11 and the center wheel 10 is fixedly rotated on the base 1. A front wheel 9 is coaxially fixed to the guide cylinder 7. Two sets of belts are provided on the base 1. The center wheel 10 is respectively connected to the rear wheel 21 and the front wheel 9 through the two sets of belts.

[0041] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, when the front wheel 9 rotates synchronously with the guide cylinder 7, a group of belt transmissions are used to drive the middle wheel 10 and the hexagonal centrifugal wheel 11 to rotate synchronously, and the rotation speed of the hexagonal centrifugal wheel 11 increases or decreases synchronously with the rotation speed of the guide cylinder 7. At the same time, the middle wheel 10 is connected to the rear wheel 21 through another group of belt transmissions, thereby synchronously driving the reciprocating screw 22 to rotate in the vertical direction.

[0042] At the same time, the reciprocating screw 22 is screwed with the longitudinal slide 23 through the reciprocating thread thereon. Therefore, with the continuous rotation of the reciprocating screw 22, the longitudinal slide 23 can be driven to reciprocate in the horizontal longitudinal direction, thereby driving the brush cylinder 27 arranged thereon to move synchronously, wherein the longitudinal slide 23 is slidably connected to the limit plate 25, and the position of the longitudinal slide 23 can be limited by the limit plate 25 to prevent the longitudinal slide 23 from shifting its position due to the rotation of the reciprocating screw 22.

[0043] At the same time, a rack 26 meshing with the gear 24 is fixed on the limit plate 25, and the gear 24 and the brush cylinder 27 are coaxially fixed. Therefore, when the longitudinal slide 23 reciprocates in the horizontal longitudinal direction, due to the existence of the rack 26, the gear 24 and the brush cylinder 27 can rotate freely in the vertical direction synchronously during the horizontal movement. Through the movement of the brush cylinder 27, the fine sand on the coating layer of the substrate 3 is slightly swept to ensure that the fine sand can be relatively evenly distributed on the substrate 3, thereby ensuring the wear resistance and surface quality of the waterproof membrane after production.

[0044] It should be noted that the length of the brush barrel 27 matches the conveying speed of the substrate 3 to ensure that the brush barrel 27 can sweep the substrate 3 during the conveying process to avoid missing any sweeping positions, thereby further ensuring the uniform distribution of fine sand on the substrate 3.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for producing a waterproof coiled material, characterized in that: The following steps are involved: S1. Material preparation and mixing: selecting a base material and a waterproof material, and adding a modifier, a filler and an auxiliary agent to the base material in proportion, and mixing them by a high-speed stirring device, and forming the mixed material into a film-like or cloth-like substrate (3) by an extruder or a casting device, and then performing a pre-curing treatment; S2, coating process: using a coating machine to evenly coat the mixed waterproof material on the surface of the substrate (3), and perform multi-layer coating and curing; S3, surface treatment: adding a fine sand protective layer on the surface of the last coating layer and performing trimming treatment. In this step, the amount of fine sand added is adaptively adjusted according to the conveying speed of the substrate (3) by the sand leveling structure; S4, coil forming: The substrate (3) is cooled and solidified by a cooling roller, and then rolled into a roll. The finished coil is then tested for thickness and strength.

2. A method for producing a waterproof coiled material according to claim 1, characterized in that: The invention comprises a base (1) for conveying a coated substrate (3), and a sand trough (2) for adding fine sand to the coated substrate (3), wherein the sand trough (2) comprises an integrally formed rectangular discharge portion (201) on the side facing the substrate (3), and a sand leveling structure for adjusting the amount of fine sand added according to the conveying speed of the substrate (3) is provided on the base (1).

3. A method for producing a waterproof coiled material according to claim 2, characterized in that: The sand leveling structure comprises an L-shaped baffle plate (17) arranged on a rectangular discharge portion (201), a positioning block (20) being fixedly connected to the rectangular discharge portion (201), a rectangular groove through which the L-shaped baffle plate (17) can slide horizontally being formed on the rectangular discharge portion (201) and the positioning block (20), and a guide component for controlling the conveying speed of the substrate (3) being provided on one side of the sand groove (2); The rectangular discharge portion (201) is provided with a centrifugal component for adjusting the horizontal lateral position of the side extension portion (171) according to the conveying speed of the substrate (3) so as to change the opening size of the rectangular discharge portion (201); A leveling component is provided on one side of the rectangular discharge portion (201) away from the guide component to drive the fine sand to be evenly distributed on the substrate (3); The guide assembly comprises two sets of side frames (4) fixedly connected to the base (1) and respectively located on one side of the substrate (3); the two sets of side frames (4) are respectively provided with a set of side seats (6) and a groove body for the side seats (6) to slide vertically; A piercing cylinder (5) and a guiding cylinder (7) are provided between the two groups of the side frames (4), and the two ends of the piercing cylinder (5) and the guiding cylinder (7) are respectively axially rotated on the side frames (4) and the side seats (6); The outer peripheral surface of the puncture tube (5) is fixedly connected to a plurality of groups of micro-diameter needles (8) arranged at equal intervals, the substrate (3) is located between the puncture tube (5) and the guide tube (7), and the coating layer thereon faces one side of the puncture tube (5); The L-shaped blocking plate (17) comprises an integrally formed side extension portion (171) and an inner inclined portion (172), and a reset component is provided on the rectangular discharge portion (201) for driving the L-shaped blocking plate (17) to block its opening; The centrifugal assembly comprises a hexagonal centrifugal wheel (11) which rotates on a rectangular discharge portion (201) with a fixed axis and rotates freely in a vertical direction, the outer peripheral surface of the hexagonal centrifugal wheel (11) comprises a plurality of groups of annular protrusions (12) which are integrally formed and arranged at equal intervals, the annular protrusions (12) are provided with an axial extension rod (13) and are provided with an axial groove (16) for the axial extension rod (13) to slide; A centrifugal spring (14) is arranged in the axial groove (16), and two ends of the centrifugal spring (14) are respectively fixedly connected to the hexagonal centrifugal wheel (11) and the axial extension rod (13), and one end of the axial extension rod (13) away from the hexagonal centrifugal wheel (11) is fixedly connected to a pressing arc plate (15), and the pressing arc plate (15) and the side extension portion (171) are in sliding contact with each other.

4. A method for producing a waterproof coiled material according to claim 3, characterized in that: The reset assembly comprises a plurality of groups of directional columns (18) fixedly connected to the rectangular discharge portion (201); the plurality of groups of directional columns (18) radially slide through the L-shaped baffle plate (17) and are sleeved with a reset spring (19) on their outer circumferences; and the two ends of the reset spring (19) are respectively fixedly connected to the L-shaped baffle plate (17) and the rectangular discharge portion (201).

5. A method for producing a waterproof coiled material according to claim 4, characterized in that: The leveling component comprises a limiting plate (25) fixedly connected to the base (1).

6. A method for producing a waterproof coiled material according to claim 5, characterized in that: The limit plate (25) is provided with a longitudinal slide (23) which reciprocates in the horizontal longitudinal direction and is provided with a second groove body for the longitudinal slide (23) to slide horizontally.

7. A method for producing a waterproof coiled material according to claim 6, characterized in that: A gear (24) that can rotate freely in the vertical direction is provided on the longitudinal slide (23); the gear (24) rotates on a fixed axis on the longitudinal slide (23) and a brush cylinder (27) is coaxially fixed thereto; The limiting plate (25) is fixedly connected to a side facing the gear (24) with a plurality of connection blocks (28), and a side away from the limiting plate (25) with a plurality of connection blocks (28) is fixedly connected to a rack (26) meshing with the gear (24).

8. A method for producing a waterproof coiled material according to claim 7, characterized in that: A rear wheel (21) is arranged on the base (1) to rotate on a fixed axis, and a reciprocating screw rod (22) is coaxially fixed to the rear wheel (21), and the reciprocating screw rod (22) is threadedly connected to the longitudinal slide seat (23); The hexagonal centrifugal wheel (11) is coaxially fixed with a center wheel (10), and the center wheel (10) is fixedly rotated on the base (1), and a front wheel (9) is coaxially fixed on the guide cylinder (7). Two sets of belts are provided on the base (1), and the center wheel (10) is respectively connected to the rear wheel (21) and the front wheel (9) through the two sets of belts.

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