Quantitative coating device for modified asphalt coiled material tire base cloth

Abstract

The utility model relates to the technical field of coating production, and provides a modified asphalt coiled material tire base cloth quantitative coating device which comprises a coating assembly, a feeding assembly and a quantitative control assembly, the coating assembly comprises a fixed wall plate, a coating bottom roller, a material storage plate, a coating roller and a lifting adjusting mechanism, the coating bottom roller is rotationally connected with the fixed wall plate, and the coating roller is located above the coating bottom roller and arranged on the fixed wall plate through the lifting adjusting mechanism; the feeding assembly comprises a material conveying pipeline, a material distributor and a constant delivery pump body, the constant delivery pump body is connected with the material conveying pipeline, and the material distributor is arranged at the tail end of the material conveying pipeline; the quantitative control assembly comprises a controller and a servo driver, and the quantitative pump body and the lifting adjusting mechanism are both electrically connected with the servo driver. Through the arrangement of the quantitative control assembly, the quantitative control assembly can control the actions of the quantitative pump and the lifting adjusting mechanism, the conveying amount of the dip-coating material is controlled through the quantitative pump, the coating amount on the tire base cloth can be quantified in cooperation with the lifting adjusting mechanism, and the coating quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of production equipment for modified bitumen rolls used in building waterproofing materials, and in particular to a quantitative coating device for the base fabric of modified bitumen rolls. Background Technology

[0002] Modified bitumen waterproof membrane mainly consists of a non-woven fabric substrate, a modified bitumen adhesive layer, and a protective membrane layer. The typical production process involves first impregnating the non-woven fabric with a prepared modified bitumen coating, then using a three-roll extrusion device to squeeze out excess coating. Next, it proceeds to the coating application stage, followed by the application of a release liner and cooling to form the final membrane.

[0003] In related technologies, the coating equipment uses an oil-immersion tank to thoroughly impregnate the base fabric before squeezing out excess coating. This makes it difficult to quantify and control the amount of coating used, limiting control methods and approaches. Consequently, during actual production, once the base fabric is fully impregnated, the temperature and pressure of the extrusion rollers can cause excessive coating, leading to oil seepage and unstable high-temperature performance in the finished roll after storage, resulting in product quality issues and a decline in material properties. Utility Model Content

[0004] This invention provides a quantitative coating device for modified bitumen roll base fabric, which solves the problem of complex coating amount control in the prior art.

[0005] This utility model provides a quantitative coating device for modified asphalt roll base fabric, comprising: a coating assembly, a feeding assembly, and a quantitative control assembly; the coating assembly includes a fixed wall plate, a coating bottom roller, a coating roller, and a lifting and adjusting mechanism arranged opposite to each other; the coating bottom roller is rotatably connected to the fixed wall plate, the coating roller is mounted on the fixed wall plate via the lifting and adjusting mechanism, and the coating roller is located above the coating bottom roller; the lifting and adjusting mechanism is configured to adjust the gap between the coating roller and the coating bottom roller; a storage plate is connected to the fixed wall plate and located on one side of the coating bottom roller, the storage plate... One edge of the material plate is located within the gap between the coating roller and the coating bottom roller; the feeding assembly includes a feeding pipe, a feeder, and a metering pump body. The metering pump body is connected to the feeding pipe and is located upstream of the feeding pipe. The feeder is located at the end of the feeding pipe and above the storage plate; the metering control assembly includes a controller and a servo driver. The controller, the servo driver, the metering pump body, and the lifting adjustment mechanism are all electrically connected to the servo driver. The servo driver is configured to control the operation of the metering pump and the lifting adjustment mechanism.

[0006] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, the storage plate is provided with a width adjustment component, which is used to control the coverage width of the output impregnation coating.

[0007] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, the width adjustment component includes two width adjustment baffles arranged at intervals, at least one of the two width adjustment baffles being slidably disposed on the storage plate to adjust the distance between the two width adjustment baffles.

[0008] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, the feeder includes a columnar main body, a material storage space is provided in the main body, and a discharge port is opened at the bottom of the main body, the discharge port is located in the area between the width adjustment baffles.

[0009] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, the side of the storage plate used to hold the impregnation coating material is inclined towards the coating roller mechanism, so that the impregnation coating material in the storage plate flows towards the coating roller mechanism.

[0010] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, a shut-off valve is provided on the material conveying pipeline between the material distributor and the quantitative pump body.

[0011] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, the discharge side of the storage plate is in contact with the coating bottom roller and is located between the coating bottom roller and the comma coating roller.

[0012] According to the modified asphalt roll base fabric quantitative coating device provided by this utility model, movable slots extending vertically are provided on both sides of the fixed wall plates; the lifting and adjusting assembly includes a lifting servo drive device, a worm gear reducer, a lead screw, a slide rail, and a slider. The slide rail is provided on the side wall opposite to the movable slot, and the slider slides in cooperation with the slide rail. The servo drive device is mechanically coupled to the worm gear reducer. One end of the lead screw is driven to the worm gear reducer, and the other end of the lead screw is threaded to the slider, so that the lead screw is driven to rotate under the action of the servo drive device, and the slider is driven to move along the slide rail.

[0013] According to the modified asphalt roll base fabric quantitative coating device provided by this utility model, the worm gear reducer is also provided with a handwheel structure, which is used to manually drive the lead screw to rotate.

[0014] According to the modified bitumen roll base fabric quantitative coating device provided by this utility model, the coating roller includes a comma coating roller, the comma coating roller is provided with two scraping edges along the width direction, and the two scraping edges are symmetrically arranged with respect to the axis of the comma coating roller.

[0015] The modified bitumen roll base fabric quantitative coating device provided by this utility model, through the setting of quantitative control components, can control the operation of quantitative pump and lifting adjustment mechanism, thereby controlling the delivery amount of impregnation coating through quantitative pump, and controlling the coating thickness in conjunction with the control of lifting adjustment mechanism, thereby quantifying the coating amount on base fabric and improving coating quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the modified bitumen roll base fabric quantitative coating device provided by this utility model.

[0018] Figure 2 This is a structural block diagram of the quantitative control component in the quantitative coating device for modified bitumen roll base fabric provided by this utility model.

[0019] Figure 3 This is a schematic diagram of the main structure of the modified bitumen roll base fabric quantitative coating device provided by this utility model.

[0020] Figure 4 This is a side view of the modified bitumen roll base fabric quantitative coating device provided by this utility model.

[0021] Figure 5 This utility model provides Figure 4 Enlarged view of the structure at point A in the middle.

[0022] Figure 6 This is a schematic diagram of the coating roller in the quantitative coating device for modified bitumen roll base fabric provided by this utility model.

[0023] Figure label:

[0024] 10. Coating assembly; 11. Fixed wall panel; 111. Movable slot; 12. Coating bottom roller; 13. Coating roller; 131. Scraper edge; 14. Storage plate; 141. Adjusting baffle; 15. Lifting and adjusting mechanism; 151. Worm gear reducer; 152. Lifting servo drive device; 153. Handwheel structure; 154. Lead screw; 155. Slide rail; 156. Slider; 20. Feeding assembly; 21. Metering pump body; 211. Pump body; 212. Stepper motor; 22. Material conveying pipe; 23. Material distributor; 24. Shut-off valve; 30. Metering control assembly; 31. Controller; 32. Servo driver; 40. Fixed base plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of clarifying the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0028] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] The following is combined Figures 1-3This invention describes a quantitative coating device for modified bitumen roll base fabric, comprising a coating assembly 10, a feeding assembly 20, and a quantitative control assembly 30. The coating assembly 10 includes a fixed wall plate 11, a coating bottom roller 12, a coating roller 13, and a lifting and adjusting mechanism 15 arranged opposite to each other. The coating bottom roller 12 is rotatably connected to the fixed wall plate 11. The coating roller 13 is mounted on the fixed wall plate 11 via the lifting and adjusting mechanism 15, and is located above the coating bottom roller 12. The lifting and adjusting mechanism 15 is configured to adjust the gap between the coating roller 13 and the coating bottom roller 12. A storage plate 14 is connected to the fixed wall plate 11 and located on one side of the coating bottom roller 12. The edge of the storage plate 14 is located in the gap between the coating roller 13 and the coating bottom roller 12. The feeding assembly 20 includes a conveying pipe 22, a distributor 23 and a metering pump 21. The metering pump 21 is connected to the conveying pipe 22 and is located upstream of the conveying pipe 22. The distributor 23 is located at the end of the conveying pipe 22 and above the storage plate 14. The metering control assembly 30 includes a controller 31 and a servo driver 32. The controller 31, the servo driver 32, the metering pump 21 and the lifting adjustment mechanism 15 are all electrically connected to the servo driver 32. The servo driver 32 is configured to control the operation of the metering pump and the lifting adjustment mechanism 15. The impregnation coating (also known as adhesive) needs to be transported to the coating assembly 10 through pipelines, and the coating assembly 10 applies the impregnation coating to the base fabric. The amount of impregnation coating applied directly affects the quality of the final product. The gap between the coating roller 13 and the coating bottom roller 12 is the coating thickness. The action of the metering pump 21 directly affects the amount of material input. In this embodiment, the lifting adjustment mechanism 15 and the metering pump are set so that they can be controlled by the servo driver 32, thereby realizing quantitative control of the feed amount and improving the coating quality.

[0031] Specifically, such as Figure 1 , Figure 3 As shown, two fixed wall panels 11 are arranged opposite each other, forming a coating space between them for coating. A base coating roller 12 and a coating roller 13 are both located within this coating space. The base coating roller 12 is rotatable, allowing it to rotate on its own axis. The coating roller 13 is fixedly connected, and its vertical position is adjusted via a lifting and adjusting mechanism 15. This allows for adjustment of the gap between the coating roller 13 and the base coating roller 12, which is the coating thickness. The lifting and adjusting mechanism 15 adjusts the coating thickness, thus preventing excessive coating thickness from being applied to the base fabric.

[0032] Furthermore, the supply of the dipping coating is achieved through a metering pump 21, thereby preventing excessive amounts from being delivered to the coating assembly 10. The metering pump is controlled by a metering control assembly 30, enabling quantitative control of the material output from the pump.

[0033] like Figure 2 As shown, the quantitative control component 30 is controlled using an existing servo control system. The quantitative control component 30 includes a base frame, with a controller 31 mounted on the base frame. The controller 31 includes a signal processing module and a pulse generator. The signal processing module is used for information transmission. The servo driver 32 is connected to the controller 31 via an RS485 bus. The servo driver 32 has a power amplifier circuit and an encoder interface. The quantitative pump body 21 includes a stepper motor 212 and a pump body 211. The servo drive motor is mechanically connected to the pump body. The pulse generator in the controller 31 sends pulse signals to the servo driver 32 via the RS485 bus. The power amplifier circuit of the servo driver 32 converts the pulse signals into drive current and outputs it to the stepper motor 212. Specifically, the pump body 211 is a servo rotor pump. The servo rotor pump can achieve precise flow control and has the advantages of high efficiency, precision, and adjustable flow rate.

[0034] Specifically, the combination of the metering pump and the metering control component 30 enables the metering delivery of the impregnation coating, wherein the control logic used can be conventional metering control logic. For example, based on closed-loop feedback control, combined with a flow / pressure sensor, a servo motor, and a control system (such as a PID control algorithm), precise flow or pressure regulation can be achieved.

[0035] In a specific example of the control logic, the supply quantity is controlled by establishing a control model. The specific mathematical model is Q=K×v×ρ×δ, where v is the linear velocity of the coating roller 12, K is a correction coefficient, ρ is the density of the coating material, and δ is the predetermined coating thickness. This control model is deployed in the controller 31, thereby enabling the correlation control between thickness and supply quantity. That is, by configuring the existing control model in the controller 31, quantitative control of the coating material delivery can be achieved. Furthermore, in this example, the linear velocity of the coating roller 12 during the production of modified bitumen rolls is utilized, and the required amount of adhesive material per square meter is obtained through a calculation model. Then, the servo driver 32 operates a metering pump to accurately supply the adhesive material required for coating, precisely control the coating quantity, and maintain the continuous and stable coating quantity.

[0036] Understandably, compared to traditional material feeding schemes, this embodiment uses a servo driver 32 to achieve associated control of the metering pump and the lifting adjustment component, thereby enabling the metering pump to feed material accurately and improve coating quality. Furthermore, actual testing shows that, compared to traditional processes, the technical solution provided by this invention can improve coating uniformity by 40% and high-temperature stability by 25%.

[0037] In specific connection scenarios, such as Figure 1 , Figure 3As shown, a fixed base plate 40 is fixedly connected to the bottom of the fixed wall panel 11. The fixed base plate 40 is used to support the fixed wall panel 11, and through the connection of the fixed base plate 40, it can provide stable support.

[0038] In conjunction with the above embodiments, such as Figure 6 As shown, the coating roller 13 includes a comma-shaped coating roller 13, which has two scraper edges 131 along its width direction. The two scraper edges 131 are symmetrically arranged about the axis of the coating roller 13. When the coating assembly 10 applies coating to the base fabric, it is necessary to control the coating thickness. In this embodiment, the arrangement of the comma-shaped coating roller 13 and the scraper edges 131 can improve the uniformity of the coating.

[0039] Specifically, the two scraper edges 131 are arranged to form a comma-shaped cross section of the coating roller 13. During coating, the scraper edges 131 are used to achieve a uniform distribution of the coating material, making the thickness on the base fabric more uniform.

[0040] In conjunction with the above embodiments, the storage plate 14 is equipped with a width adjustment component, which is used to control the coverage width of the output impregnation coating. The impregnation coating is applied through the storage plate 14. Different widths of coverage are required when applying different specifications of coating. In this embodiment, the width adjustment component is used to adjust the width of the coating, thereby enabling adjustment for different specifications of products and improving the applicability of the device.

[0041] Specifically, the storage plate 14 has an overall plate structure, with raised edge structures on the edges of its three sides. These edge structures allow the impregnation coating to flow out from the open side (the side without the edge structures) of the storage plate 14. The width adjustment component of this embodiment allows for adjustment of the outflow width from the open side, thereby controlling the width of the fabric.

[0042] In practical implementation, a retractable raised edge structure can be set on the open side to achieve an adjustable opening structure on the open side, thereby enabling the adjustment of the fabric width.

[0043] In the above embodiments, the width adjustment assembly includes two width adjustment baffles 141 spaced apart. At least one of the two width adjustment baffles 141 is slidably disposed on the material storage plate 14 to adjust the distance between the two width adjustment baffles 141. By adjusting the distance between the two width adjustment baffles 141, the width of the coating distribution can be adjusted, thereby enabling coating of different widths for various specifications and improving the flexibility of the device.

[0044] Specifically, one or two of the adjusting baffles 141 are slidably disposed on the storage plate 14, so that they can slide relative to the width direction of the storage plate 14. During the sliding process, the adjusting baffles 141 move away from each other or move closer to each other, so as to adjust the width of the spacing area, thereby realizing the adjustment of the width of the coating area, so that the width can be adjusted according to specific needs.

[0045] In a specific configuration, a sliding track can be set on the storage plate 14, and a sliding block can be connected to the adjusting baffle 141. The sliding block and the sliding track slide together, thereby realizing the relative sliding of the two adjusting baffles 141.

[0046] In some embodiments, the material feeder 23 includes a columnar main body with a material storage space inside, and a discharge port at the bottom of the main body located in the area between the width adjustment baffles 141.

[0047] Specifically, the main body is connected to the end of the conveying pipe 22, and the conveying pipe 22 is in fluid communication with the storage space. Through the fluid communication, the impregnation coating in the conveying pipe 22 can enter the storage space and be output to the storage plate 14 through the storage port, thereby realizing the output of the impregnation coating.

[0048] In conjunction with the above embodiments, the side of the storage plate 14 used to hold the impregnation coating material is inclined towards the coating roller 13 mechanism, so that the impregnation coating material in the storage plate 14 flows towards the coating roller 13 mechanism. This inclined arrangement facilitates the flow of the impregnation coating material and prevents the impregnation coating material from depositing on the storage plate 14.

[0049] Specifically, the surface of the storage plate 14 is smooth, and the storage plate 14 is inclined as a whole, which allows the impregnation coating material entering the storage plate 14 to flow out quickly and achieve the coating operation through the cooperation of the coating roller 13 and the coating bottom roller 12.

[0050] In some embodiments, a shut-off valve 24 is provided on the material conveying pipe 22 between the material distributor 23 and the metering pump body 21. The shut-off valve 24 can quickly control the amount of impregnation coating used, ensuring that the material conveying meets the needs of the equipment and preventing too much or too little material from flowing into the metering pump body 21, which would affect the production process.

[0051] In the specific configuration, the discharge side of the storage plate 14 is in contact with the coating bottom roller 12 and is located between the coating bottom roller 12 and the comma coating roller 13. This allows the impregnation coating material flowing out of the storage plate 14 to be coated quickly and accurately, thereby improving the coating efficiency.

[0052] In some embodiments, such as Figure 4 , Figure 5As shown, both sides of the fixed wall panel 11 are provided with movable slots 111 extending vertically. The lifting adjustment assembly includes a lifting servo drive device 152, a worm gear reducer 151, a lead screw 154, a slide rail 155, and a slider 156. The slide rail 155 is located on the side wall opposite to the movable slots 111. The slider 156 is slidably engaged with the slide rail 155. The servo drive device is mechanically coupled to the worm gear reducer 151. One end of the lead screw 154 is connected to the worm gear reducer 151, and the other end of the lead screw 154 is threadedly connected to the slider 156, so that the lead screw 154 can be rotated under the action of the servo drive device, and the slider 156 can be moved along the slide rail 155. The displacement of the coating roller 13 in the vertical direction needs to be adjusted to achieve precise control of the gap (coating thickness) between the coating roller 13 and the coating bottom roller 12. In this embodiment, the displacement can be precisely controlled by a servo drive device.

[0053] Specifically, such as Figure 4 , Figure 5 As shown, the lifting adjustment assembly is tilted as a whole, which causes the coating roller 13 to be biased to one side of the coating bottom roller 12. Furthermore, the worm gear reducer 151 adopts a conventional device structure, with a lifting servo drive device 152 installed on one side of the worm gear reducer 151 to drive the lead screw 154. The lifting servo drive device 152 enables precise control of the displacement, improving the coating quality.

[0054] In conjunction with the above embodiments, the worm gear reducer 151 is also provided with a handwheel structure 153, which is used to manually drive the lead screw 154 to rotate. In some debugging or drive device failure situations, the lead screw 154 can be driven through the handwheel structure 153, thereby improving the overall flexibility of the device.

[0055] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment, through the setting of the quantitative control component 30, can control the operation of the quantitative pump and the lifting adjustment mechanism 15, thereby controlling the delivery amount of the impregnation coating through the quantitative pump, and, in conjunction with the control of the lifting adjustment mechanism 15, can achieve control of the coating thickness, thereby quantifying the coating amount on the base fabric and improving the coating quality.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for quantitatively coating modified bitumen roll base fabric, characterized in that, include: A coating assembly includes a fixed wall panel, a coating bottom roller, a material storage plate, a coating roller, and a lifting and adjusting mechanism arranged opposite to each other. The coating bottom roller is rotatably connected to the fixed wall panel. The coating roller is mounted on the fixed wall panel via the lifting and adjusting mechanism and is located above the coating bottom roller. The lifting and adjusting mechanism is configured to adjust the gap between the coating roller and the coating bottom roller. The material storage plate is connected to the fixed wall panel and located on one side of the coating bottom roller. One edge of the material storage plate is located within the gap between the coating roller and the coating bottom roller. The feeding assembly includes a conveying pipe, a distributor, and a metering pump. The metering pump is connected to the conveying pipe and is located upstream of the conveying pipe. The distributor is located at the end of the conveying pipe and above the storage plate. A quantitative control component includes a controller and a servo drive. The controller is electrically connected to the servo drive, the quantitative pump body and the lifting adjustment mechanism are all electrically connected to the servo drive, and the servo drive is configured to control the operation of the quantitative pump and the lifting adjustment mechanism.

2. The modified bitumen roll base fabric quantitative coating device according to claim 1, characterized in that, The storage plate is equipped with a width adjustment component, which is used to control the coverage width of the output impregnation coating.

3. The modified bitumen roll base fabric quantitative coating device according to claim 2, characterized in that, The width adjustment assembly includes two width adjustment baffles spaced apart, at least one of which is slidably disposed on the storage plate to adjust the distance between the two width adjustment baffles.

4. The modified bitumen roll base fabric quantitative coating device according to claim 3, characterized in that, The material feeder includes a columnar main body with a material storage space inside. A material outlet is provided at the bottom of the main body, and the material outlet is located in the area between the width adjustment baffles.

5. The modified bitumen roll base fabric quantitative coating device according to claim 2, characterized in that, The storage plate is inclined towards the coating roller mechanism so that the impregnation material in the storage plate flows towards the coating roller mechanism.

6. The modified bitumen roll base fabric quantitative coating device according to claim 1, characterized in that, A shut-off valve is provided on the material delivery pipe between the material distributor and the metering pump body.

7. The modified bitumen roll base fabric quantitative coating device according to claim 1, characterized in that, The discharge side of the storage plate is in contact with the coating bottom roller and is located between the coating bottom roller and the coating roller.

8. The modified bitumen roll base fabric quantitative coating device according to claim 1, characterized in that, Both sides of the fixed wall panels are provided with movable slots extending in the vertical direction; The lifting and adjusting mechanism includes a lifting servo drive device, a worm gear reducer, a lead screw, a slide rail, and a slider. The slide rail is located on the side wall opposite to the movable slot. The slider slides in cooperation with the slide rail. The servo drive device is mechanically coupled to the worm gear reducer. One end of the lead screw is driven by the worm gear reducer, and the other end of the lead screw is threaded to the slider, so that the lead screw is driven to rotate under the action of the servo drive device, and the slider is driven to move along the slide rail.

9. The modified bitumen roll base fabric quantitative coating device according to claim 8, characterized in that, The worm gear reducer is also equipped with a handwheel structure, which is used to manually drive the lead screw to rotate.

10. The modified bitumen roll base fabric quantitative coating device according to claim 1, characterized in that, The coating roller includes a comma coating roller, which has two scraping edges along its width direction, and the two scraping edges are symmetrically arranged about the axis of the comma coating roller.

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