Forming equipment and process for tire-free modified asphalt waterproof coiled material

Abstract

The invention discloses forming equipment and process for a tire-free modified asphalt waterproof coiled material. The forming equipment comprises a material layer supply unit and a cooling unit, and the material layer supply unit comprises an upper film supply assembly, a sizing material supply assembly and a lower film supply assembly. The surface of the coiled material is smooth, no stress is released in the storage process, wrinkles are not prone to being generated on the surface of the coiled material, the hollowing phenomenon and the water mixing phenomenon caused by product wrinkles in the waterproof paving process are overcome, and the waterproof effect is more reliable; meanwhile, based on movable coating and scraping, hard impurities in the rubber material can be wrapped and taken out, the scratching damage to the annular conveying steel belt and the coiled material surface material is reduced, in addition, equal-thickness covering of the rubber layer is implemented under the zero tension and angle formed by the upper film, the length needed by the annular conveying steel belt is effectively shortened, and then the production and use cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of waterproofing coiled materials, and in particular relates to a molding device for a tireless modified asphalt waterproofing coiled material, and also relates to a molding process for a tireless modified asphalt waterproofing coiled material. Background Art

[0002] At present, tireless waterproof membrane includes an upper surface material layer, an intermediate waterproof rubber layer, and a lower surface material layer. Its specific forming process is divided into extrusion method and scraping method. The extrusion method refers to sending the intermediate waterproof rubber layer between the upper surface material layer and the lower surface material layer, and using roller extrusion and cooling to form; the scraping method mainly uses an endless steel belt as a forming carrier, and uses the flatness of the stainless steel belt surface and the characteristics of belt conveying to drive the lower surface material layer forward, and then scrapes the waterproof rubber layer to the upper surface of the lower surface material layer through a hopper. After preliminary cooling, the surface covering layer covers the upper surface material layer.

[0003] However, for the extrusion method, the process is relatively mature and the requirements for self-adhesive materials are relatively low. Even if there are impurities or hard particles in the adhesive, they will be wrapped inside the coil and will not affect the surface quality. However, there are defects: due to the roller traction process used in the material shaping and initial cooling process, the surface film carrier material in the coil is subject to greater tension, and the entire coil material will also produce stress. After the coil is formed and stored for a period of time, as the material stress is released, the surface of the coil is prone to wrinkling, and the appearance quality of the product will be greatly affected. The surface will show gullies and wrinkles. After being laid as a waterproof layer, the gullies and wrinkles are prone to form water seepage.

[0004] For the scraping method, during the forming and preliminary cooling process of the tireless waterproofing coil, the coil relies on the steel belt as a carrier, the coil has almost no tension, the internal stress is less released during the storage process, and the coil surface is not easy to wrinkle, but there are defects: 1) In order to achieve a good cooling effect, the length of the steel belt generally needs to reach a considerable length to meet the production requirements, and the material cost of the steel belt is generally expensive; 2) Since the self-adhesive material is directly scraped onto the dynamically running steel belt through the scraping port of the static scraping trough, if there are hard impurities in the self-adhesive material, it will cause scratches and damage to the steel belt and the surface material of the coil covered on the surface of the steel belt, which will not only shorten the service life of the steel belt, but also the amount of disassembly and assembly of the steel belt is quite large, which will inevitably increase the production cost. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an improved molding device for tireless modified asphalt waterproofing membrane.

[0006] At the same time, the invention also relates to a molding process of a tireless modified asphalt waterproofing coiled material.

[0007] To achieve the above object, the present invention adopts the following scheme:

[0008] A forming device for a tireless modified asphalt waterproofing membrane comprises a material layer supply unit and a cooling unit, wherein the material layer supply unit comprises an upper film supply component, a rubber material supply component and a lower film supply component, in particular,

[0009] The lower film feeding assembly comprises a lower film unwinding roller and an annular transmission steel belt extending in the front-to-back direction, wherein the lower film unwinding from the lower film unwinding roller is conveyed from bottom to top and adheres to the top surface of the annular transmission steel belt and then conveyed forward and downward to the cooling unit;

[0010] The rubber material feeding assembly includes a hopper extending along the width direction of the circular transmission steel belt and forming a discharge port at the bottom, and a coating roller arranged at the discharge port at the bottom of the hopper and rotating around the length direction of the hopper, wherein the hopper can exchange heat with the rubber material inside itself, the bottom of the coating roller is exposed from the discharge port, and the size of the discharge gap formed by the coating roller and the discharge port is adjustable, the lower film passes between the coating roller and the circular transmission steel belt, and the coating roller moves in opposite directions with the circular transmission steel to synchronously extrude and roll-coat the rubber material in the hopper to the top surface of the lower film, and the paving speed formed by the discharge gap after the rubber material self-adjusts matches the speed of the circular transmission steel belt to make the rubber layer have equal thickness;

[0011] The upper film feeding assembly includes an upper film unwinding roller and an upper film conveying roller, wherein the unwinding upper film passes through the upper film conveying roller and the front end of the circular conveying steel belt, and the corresponding part of the upper film of the circular conveying steel belt keeps the rubber layer of equal thickness covering the lower film so that the upper film and the lower film both form a roll material prototype under zero tension, and the roll material prototype is sent forward and downward to the cooling unit for cooling to complete the forming of the tireless modified asphalt waterproofing roll material.

[0012] Preferably, the width w of the gap between the coating roller and the discharging port is ≤5mm; in short, the glue layer is controlled by changing the gap between the coating roller and the wall of the material tank, thereby controlling the amount of glue discharged. The key technical point is the control of the gap between the roller and the material tank. If the gap is too large, the material will leak out of the gap uncontrollably. If it is too small, an oil seal will be formed, and the material will not be easily brought out. This gap parameter needs to be designed in the range of 0-5mm in combination with the viscosity of the self-adhesive material, which can meet the production requirements of national standard products of different thicknesses.

[0013] Furthermore, the glue material feeding assembly also includes driving the paint roller to move up and down to fine-tune the size of the slit width. In some specific embodiments, two shaft end seats of the paint roller are respectively formed with power screws extending up and down, wherein each power screw and the shaft end seat form a screw assembly, and the shaft end seat moves up and down to adjust the slit width during the rotation of the power screw. At this time, whether the power screw is manual or automatic, the adjustment amount formed by it remains equal.

[0014] According to a specific implementation and preferred aspect of the present invention, the coating roller forms a rubber compensation roller groove in the circumferential direction, wherein the compensation rubber formed from the rubber compensation roller groove covers the entire lower film in the width direction of the endless conveying steel belt. This avoids insufficient rubber due to uneven roller coating, is more conducive to the spreading of rubber, and at the same time, hard impurities in the rubber are wrapped and carried out along the running direction of the endless conveying steel belt, reducing scratching damage to the endless conveying steel belt and the surface material of the coil.

[0015] Preferably, the rubber compensation roller groove is a groove extending along the length direction of the paint roller.

[0016] Furthermore, a heat exchange jacket is formed outside the hopper, wherein a medium is added into the heat exchange jacket to perform heat exchange of the internal rubber material. At least during the rubber material feeding, the temperature formed by the heat-insulating heat-conducting oil is more conducive to the softening and roller coating of the rubber material.

[0017] According to a specific implementation and preferred aspect of the present invention, the upper film passing through the front end of the circular transmission steel belt is divided into a feeding section, a laminating section, and a cooling section, wherein the feeding section forms an acute angle with the top surface of the circular transmission steel belt and is located on the upper side of the circular transmission steel belt; the laminating section is formed by the upper film, the rubber layer, and the lower film at the front end of the circular transmission steel belt, and the upper film is pressed inward to cover; the cooling section is located between the laminating section and the cooling unit and maintains the prototype of the coil formed by the relative clamping of the rubber layer between the upper and lower films, wherein the feeding section and the cooling section form an angle of ∠1, the feeding section and the top surface of the circular transmission steel belt form an angle of ∠2, 180°-∠1≤∠2, and ∠2 adjusts the covering pressure as the position of the upper film transmission roller changes. Here, based on the angle formed, the following conditions are met: 1. The adhesive layer is formed with equal thickness; 2. The surface of the rolled material after molding is quite flat, and the produced rolled material has basically no stress release during storage, and the surface of the rolled material will not wrinkle, thereby ensuring the reliability of the waterproof function.

[0018] Preferably, the cooling unit includes a cooling section and an output section formed by cooling rollers, wherein the coiled material in the cooling section is arranged horizontally, and the output section is outputted from the output end of the cooling section at an angle upward, the angle formed between the cooling section and the waiting section is ∠3, and the angle formed between the cooling section and the output section is ∠4, wherein ∠1>∠3≥∠4. Avoid cooling to affect the angle change of the coiled material, thereby affecting the pressure and tension of the laminating section.

[0019] In some specific embodiments, the endless transmission steel belt includes a driving roller and a driven roller distributed front and back, and an endless steel belt, wherein the coating roller is located above the driven roller, and the upper film transmission roller is located above the rear side of the driving roller; and / or the upper film unwinding roller is located between the upper film transmission roller and the driving roller and above the upper film transmission roller. The endless transmission steel belt of the present application is composed of a metal sheet with a total length of about 4 meters, which is installed on the driving roller and the transmission roller to form a closed transmission device, and the overall length of the transmission device is about 1 meter. Compared with the carrier method process, the length is extremely short, so it is called Ultra short ring sheet . The self-adhesive material is coated on the metal sheet attached to the surface material of the coil through the rotation of the roller coating tank for forming and preliminary cooling, so that the coil retains the characteristics of carrier method forming in the early stage of forming and cooling, and realizes zero tension shaping and preliminary cooling of the product, which is also the most important key point for the surface flatness of the coil production. However, the new design adopts the ultra-short metal sheet design. The metal has certain flexibility and strength. Stainless steel or other types of metal can be used. The metal sheet is made into a ring shape according to the design length requirements in the manufacturer. During installation, it is directly put on the main driving roller and the passive roller by manual operation to complete the installation. The installation and replacement process is simplified, which greatly shortens the installation and replacement time and reduces the manufacturing cost.

[0020] Another technical solution of the present invention is: a molding process of a tireless modified asphalt waterproofing membrane, which adopts the molding equipment of the tireless modified asphalt waterproofing membrane and comprises the following steps:

[0021] S1, film supply

[0022] The unrolled lower film formed by the lower film unwinding roller is sent forward and downward to the cooling unit after being attached to the top surface of the annular transmission steel belt from bottom to top, wherein the front and rear ends of the annular transmission steel belt relatively flatten the lower film, and the lower film and the annular transmission steel belt at the flattening section keep moving forward synchronously;

[0023] S2, rubber strip roller coating and extrusion

[0024] Add rubber into the hopper, and the hopper itself performs heat exchange on the internal rubber. When the coating roller at the material inlet contacts the lower film of the flattening section, the movement of the lower film drives the coating roller to rotate in the opposite direction. At this time, the rubber in the hopper is formed on the top surface of the lower film by the coating roller and the annular transmission steel belt in a synchronous extrusion and roller coating manner, and the spreading speed of the rubber in the flattening section matches the rotation speed of the coating roller and the running speed of the annular transmission steel belt so that a rubber layer of equal thickness is formed on the lower film of the flattening section.

[0025] S3, film covering

[0026] The unwound upper film passes through the upper film transmission roller and the front end of the annular transmission steel belt, and the corresponding part of the upper film of the annular transmission steel belt keeps the rubber layer of equal thickness on the lower film to form a coil prototype, wherein the upper film is adaptively adjusted according to the change of the covering angle, so that the upper film and the lower film are laminated under zero tension;

[0027] S4, cooling molding

[0028] The roll material prototype is sent forward and downward to the cooling unit for cooling, and is gradually cooled through multiple passes to complete the forming of the tireless modified asphalt waterproof roll material.

[0029] Due to the application of the above-mentioned technology and equipment solutions, the present invention has the following advantages compared with the prior art:

[0030] In the existing tireless waterproofing coiled material forming, if the extrusion method is adopted, due to the roller traction process during the material shaping and initial cooling process, the surface film carrier material in the coiled material is subjected to a large tension, and the whole coiled material will also produce stress. After the coiled material is formed, it is stored for a period of time. As the material stress is released, the surface of the coiled material is prone to wrinkling, and the appearance quality of the product will be greatly affected. The surface shows gully and wrinkle phenomenon. After being laid as a waterproof layer, the gully and wrinkle are easy to form water leakage; if the scraping method is adopted, since the self-adhesive material is directly scraped on the dynamically running steel belt through the scraping port of the static scraping trough, if there are hard impurities in the self-adhesive material, it will cause scratches and damage to the steel belt and the surface material of the coiled material laid on the surface of the steel belt, which will not only shorten the service life of the steel belt, but also the amount of disassembly and assembly of the steel belt is also quite large, which will inevitably increase the production cost and other shortcomings. The overall design of the forming equipment of the tireless modified asphalt waterproofing coiled material in the present invention cleverly solves various shortcomings of the existing structure. After adopting the forming equipment of the tireless modified asphalt waterproofing membrane, first, the unwinding lower film formed by the lower film unwinding roller is sent forward and downward to the cooling unit after being attached to the top surface of the circular transmission steel belt from bottom to top; then, the rubber material is added into the hopper, and the hopper itself performs heat exchange on the internal rubber material. When the coating roller at the material inlet contacts the lower film of the flattening section, the movement of the lower film drives the coating roller to rotate in the opposite direction. At this time, the rubber material in the hopper is synchronously squeezed and rolled by the coating roller and the circular transmission steel belt. The rubber material is formed on the top surface of the lower film in a coating manner, and the spreading speed of the rubber material in the flattening section matches the rotation speed of the coating roller and the running speed of the annular transmission steel belt so that the rubber material layer of equal thickness is formed on the lower film of the flattening section; then, the unwound upper film passes through the upper film transmission roller and the front end of the annular transmission steel belt, and the corresponding part of the upper film of the annular transmission steel belt keeps the rubber material layer of equal thickness covering the lower film to form a coil prototype, wherein the upper film is adaptively adjusted according to the change of the covering angle, so that the upper film and the lower film are both under zero tension. for lamination; finally, the coil prototype is sent forward and downward to the cooling unit for cooling, and is gradually cooled in multiple passes to complete the forming of the tireless modified asphalt waterproof coil. Therefore, the present invention is based on the transmission of the annular transmission steel belt, and the coating rollers that move in opposite and synchronous directions synchronously extrude and roll the rubber to the top surface of the lower film, and the spreading speed formed by the rubber from the discharge gap matches the speed of the annular transmission steel belt to make the rubber layer of equal thickness, and at the same time, the upper film is covered under zero tension, which not only makes the surface of the coil flat, but also has no internal stress release during storage, and the surface of the coil is not prone to wrinkles, so as to overcome the hollowing phenomenon and water penetration phenomenon caused by product wrinkles during waterproof paving, and make the waterproof effect more reliable; at the same time, based on active scraping, the hard impurities in the rubber can be wrapped and brought out, reducing the scratching damage to the annular transmission steel belt and the surface material of the coil. In addition, the rubber layer is covered with equal thickness under the zero tension and angle formed by the upper film, which effectively shortens the required length of the annular transmission steel belt, thereby reducing the production and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a molding device for a tireless modified asphalt waterproofing membrane of this embodiment;

[0032] Figure 2 This is a process flow chart of the molding process of the tireless modified asphalt waterproof membrane of this embodiment;

[0033] Among them: 1. Material layer supply unit; 10. Lower film feeding assembly; 100. Lower film unwinding roller; 101. Annular transmission steel belt; g1. Active roller; g2. Driven roller; g3. Annular steel belt; 11. Glue feeding assembly; 110. Material hopper; 111. Coating roller; m. Glue compensation roller groove; 112. Gap size fine-tuning component; a. Shaft end seat; b. Power screw; c. Hand wheel; 12. Upper film feeding assembly; 120. Upper film unwinding roller; 121. Upper film transmission roller;

[0034] 2. Cooling unit; 20. Front cooling roller; 21. Rear cooling roller; 2a. Cooling section; 2b. Output section;

[0035] m1, lower film; m2, upper film; m20, feeding section; m21, laminating section; m22, cooling section. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0042] like Figure 1 As shown, the forming equipment of the tireless modified asphalt waterproofing membrane of this embodiment includes a material layer supply unit 1 and a cooling unit 2, wherein the material layer supply unit 1 includes an upper film supply component 10, a rubber supply component 11, and a lower film supply component 12.

[0043] Specifically, the lower film feeding assembly 10 includes a lower film unwinding roller 100 and an annular transmission steel belt 101 extending along the front-to-back direction, wherein the lower film m1 unwound from the lower film unwinding roller 100 is fed forward and downward to the cooling unit 2 from bottom to top and adheres to the top surface of the annular transmission steel belt 101; the glue feeding assembly 11 includes a hopper 110 extending along the width direction of the annular transmission steel belt 101 and forming a discharge port at the bottom, and a coating roller 111 rotating around the length direction of the hopper 110 and arranged at the discharge port at the bottom of the hopper 110; the upper film feeding assembly 12 includes an upper film unwinding roller 120 and an upper film transmission roller 121, wherein the unwound upper film m2 passes through the upper film transmission roller 121 and the front end of the annular transmission steel belt 101, and the corresponding part of the upper film of the annular transmission steel belt 101 maintains an equal thickness of the glue layer on the lower film m1 so that the upper film m2 and the lower film m1 are formed into a coil prototype under zero tension.

[0044] In this example, the hopper 110 can exchange heat with the rubber inside itself, the bottom of the paint roller 111 is exposed from the discharge port, and the size of the discharge gap formed by the paint roller 111 and the discharge port is adjustable, and the lower film m1 passes between the paint roller 111 and the circular transmission steel belt 101. The paint roller 111 moves toward the circular transmission steel belt 101 to synchronously extrude and roll the rubber in the hopper 110 to the top surface of the lower film m1. After the rubber is self-adjusted, the spreading speed formed by the discharge gap matches the speed of the circular transmission steel belt 101 to make the rubber layer of equal thickness.

[0045] In some specific embodiments, the width w of the discharge gap formed between the paint roller 111 and the discharge port is ≤5mm; in short, the rubber layer is controlled by changing the gap between the paint roller and the material trough wall, thereby controlling the amount of glue discharged. The key technical point is the control of the gap between the roller and the material trough. If the gap is too large, the material will leak out of the gap uncontrollably. If it is too small, an oil seal will be formed, and the material will not be easily brought out. This gap parameter needs to be designed in the range of 0-5 mm in combination with the viscosity of the self-adhesive material, which can meet the production requirements of national standard products of different thicknesses. In this example, the rubber feeding assembly 11 also includes a gap size fine-tuning component 112 that drives the paint roller 111 to move up and down to fine-tune the gap width, wherein the gap size fine-tuning component 112 includes an axial end seat a formed at the two axial ends of the paint roller, and a power screw b installed on each axial end seat a and extending up and down, wherein each power screw b forms a screw assembly with the axial end seat a, and the axial end seat a moves up and down during the rotation of the power screw b to adjust the gap width. At this time, whether the power screw b is manual or automatic, the adjustment amount formed by it remains equal, so that the width of the gap at the outlet is kept equal (in this case, a hand wheel c is formed on the top of the power screw b, and the adjustment is performed by turning the hand wheel c). In addition, the paint roller 111 forms a rubber compensation roller groove m in the circumferential direction, wherein the compensation rubber formed by the rubber compensation roller groove m covers the entire lower film m1 in the width direction of the annular transmission steel belt 101. It avoids insufficient rubber due to uneven roller coating, which is more conducive to the spreading of rubber. At the same time, the hard impurities in the rubber will be wrapped and carried out by the rubber along the running direction of the annular transmission steel belt, reducing scratching damage to the annular transmission steel belt and the surface material of the coil. The rubber compensation roller groove m is a groove extending along the length direction of the paint roller, and the general groove is "v" or "U" shaped.

[0046] In addition, in this example, the upper film m2 passing through the front end of the circular transmission steel belt 101 is divided into a feeding section m20, a laminating section m21, and a cooling section m22, wherein the feeding section m20 forms an acute angle with the top surface of the circular transmission steel belt 101, and is located on the upper side of the circular transmission steel belt 101; the laminating section m21 is formed by the upper film m2, the rubber layer, and the lower film m1 at the front end of the circular transmission steel belt 101, and the upper film m2 is pressed inward to cover; the cooling section m22 is located between the laminating section m21 and the cooling unit 2 and maintains the prototype of the coil formed by the relative clamping of the rubber layer between the upper film m2 and the lower film m1, wherein the feeding section m20 and the cooling section m22 form an angle of ∠1, and the feeding section m20 and the top surface of the circular transmission steel belt 101 form an angle of ∠2, 180°-∠1≤∠2, and ∠2 adjusts the covering pressure as the position of the upper film transmission roller changes. Here, based on the angle formed, the following conditions are met: 1. The adhesive layer is formed with equal thickness; 2. The surface of the rolled material after molding is quite flat, and the produced rolled material has basically no stress release during storage, and the surface of the rolled material will not wrinkle, thereby ensuring the reliability of the waterproof function.

[0047] In some specific embodiments, the cooling unit 2 includes a front cooling roller 20 and a rear cooling roller 21 arranged side by side, wherein the front cooling roller 20 and the rear cooling roller 21 are arranged side by side, and the coiled material prototype is sent forward and downward to the cooling unit 2 (rear cooling roller 21 and front cooling roller 20) for cooling to complete the forming of the tireless modified asphalt waterproofing coiled material. In this example, the cooling unit 2 is formed by the front cooling roller 20 and the rear cooling roller 21 to form a cooling section 2a and an output section 2b, wherein the coiled material prototype located in the cooling section 2a is arranged horizontally, and the output section is outputted upwardly tilted from the output end of the cooling section 2a, and the angle formed between the cooling section 2a and the waiting cooling section m22 is ∠3, and the angle formed between the cooling section 2a and the output section 2b is ∠4, wherein ∠1>∠3>∠4. Avoid cooling to affect the angle change of the coiled material prototype, thereby affecting the pressure and tension of the laminating section. Specifically, ∠1=164°; ∠2=16°; ∠3=148°; ∠4=116°.

[0048] In addition, the endless transmission steel belt 101 includes an active roller g1 and a driven roller g2, and an endless steel belt g3, which are distributed front and back, wherein the coating roller 111 is located above the driven roller g2, and the upper film transmission roller 121 is located above the rear side of the active roller g1; the upper film unwinding roller 120 is located between the upper film transmission roller 121 and the active roller g1 and above the upper film transmission roller 121. At the same time, the endless transmission steel belt 101 of the present application is composed of a metal sheet with a total length of about 4 meters, which is installed on the active roller and the transmission roller to form a closed transmission device, and the overall length of the transmission device is about 1 meter. Compared with the carrier method process, the length is extremely short, so it is called an ultra-short annular sheet. The self-adhesive material is coated on the metal sheet attached to the surface material of the coil through the rotation of the roller coating tank for forming and preliminary cooling, so that the coil retains the characteristics of carrier method forming in the early stage of forming and cooling, and realizes zero tension shaping and preliminary cooling of the product, which is also the most important key point for the surface flatness of the coil production. However, the new design adopts the ultra-short metal sheet design. The metal has certain flexibility and strength. Stainless steel or other types of metal can be used. The metal sheet is made into a ring shape according to the design length requirements in the manufacturer. During installation, it is directly put on the main driving roller and the passive roller by manual operation to complete the installation. The installation and replacement process is simplified, which greatly shortens the installation and replacement time and reduces the manufacturing cost.

[0049] At the same time, the main core of the cylindrical roller coating forming of this embodiment is:

[0050] A metal sheet of a certain length is installed on the active roller and the driving roller to form a closed transmission device. A roller coating trough is placed above the metal sheet, and a covering roller is built into the material trough. The covering roller is a cylindrical roller. The waterproof adhesive in the material trough is brought out by the rotation of the covering roller and coated on the surface material of the coiled material attached to the metal sheet, and keeps running synchronously with the metal sheet. Then, another surface material is pasted on the adhesive through the covering roller, and it moves forward to the cooling unit for further cooling to form a tireless self-adhesive coiled material product. In short, the key equipment to realize cylindrical roller coating forming is mainly composed of two key components: the roller coating trough and the annular thin plate, which is the key technical point. The cylindrical roller coating forming process is somewhat similar to the working principle of the ball writing of a ballpoint pen. The material is brought out and coated on the carrier under the rotation of the round object, so the new process can also be referred to as the ballpoint pen forming method.

[0051] Key technical points of this embodiment:

[0052] 1. Miniaturized design of metal sheets

[0053] The metal sheet used in the ring transmission steel belt is about 4 meters long in total. It is installed on the active roller and the transmission roller to form a closed transmission device. The overall length of the transmission device is about 1 meter. Compared with the carrier method process, the length is extremely short, so it is called an ultra-short ring sheet. The self-adhesive adhesive is coated on the metal sheet attached to the surface material of the coil through the rotation of the roller coating tank for forming and preliminary cooling, so that the coil retains the characteristics of the carrier method in the early stage of forming and cooling, and realizes the zero-tension shaping and preliminary cooling of the product. This is also the most important key point for the production of coil surface flatness. However, the new design adopts the ultra-short metal sheet design. The characteristics of the metal have certain flexibility and strength. Stainless steel or other types of metal can be used. The metal sheet is made into a ring shape according to the design length requirements in the manufacturer. During installation, it is directly put on the main drive roller and the passive roller by manual labor to complete the installation. The installation and replacement process is simplified, which greatly shortens the installation and replacement time and reduces the manufacturing cost.

[0054] 2. Design of roller coating tank

[0055] The roller coating tank is the key equipment for applying the adhesive material on the metal sheet and is a component of the forming equipment. The roller coating tank is mainly composed of an oil storage tank for storing the adhesive material, a heat transfer oil jacket for storing the heat-conducting oil, a coating roller installed at the base end of the material tank, and components such as a lifting rod and an adjusting wheel. In short, the design of installing the coating roller at the base end of the material tank is adopted. The surface of the roller is designed with longitudinal grooves. There is a certain gap between the coating roller and the tank wall. The adhesive material will bring out the self-adhesive adhesive material to the surface material of the coiled material attached to the surface of the metal sheet under the rotation of the roller. The spreading speed of the self-adhesive adhesive on the metal sheet can be adjusted synchronously with the rotation speed of the roller and the running speed of the metal sheet. Specifically, the forming thickness is controlled by controlling the change of the gap between the coating roller and the material tank wall by driving the lifting rod up and down by the adjusting wheel, thereby controlling the amount of adhesive output. The key technical point is the control of the gap between the roller and the material tank. If the gap is too large, the material will leak out of the gap uncontrollably. If it is too small, an oil seal will be formed, and the material is not easy to be brought out. This gap parameter needs to be designed within the range of 0-5 mm in combination with the viscosity of the self-adhesive material to meet the production requirements of national standard products of different thicknesses.

[0056] 3. Working principle of cylindrical roller coating forming process

[0057] The lower surface material of the tubeless coil is laid on the annular metal sheet, the gap between the roller and the material tank is adjusted, the running speed of the annular metal sheet and the coating roller is adjusted, and the self-adhesive material of a certain viscosity is injected into the roller coating tank. The rubber material is coated on the surface material on the metal sheet by the coating roller under the rotation of the coating roller to form a certain thickness of rubber layer, which runs with the metal sheet. Then, the upper surface material of the coil is pasted on the rubber layer with the upper film roller at the other end of the metal sheet to initially form the coil prototype, and then enter the cold cylinder cooling device for further cooling to form the finished tubeless coil. The principle of this forming method is equivalent to a pair of unequal diameter extrusion rollers composed of a roller with a relatively small diameter and a roller with an infinite diameter, and the self-adhesive material is coated on the roller (metal sheet) with an infinite diameter by extrusion for shaping and initial cooling. The direction of rotation of the roller is consistent with the running direction of the metal sheet. The hard impurities in the rubber will be wrapped and carried out along with the running direction of the metal sheet, reducing the scratching damage to the metal sheet and the surface material of the coil, which is equivalent to the principle of extrusion molding. However, the surface material of the self-adhesive coil is spread on the metal ring sheet and runs with the sheet. The surface material is basically in a zero tension state. The surface of the coil after molding is quite flat. During the storage process of the produced coil, there is basically no stress release, and the surface of the coil will not wrinkle, ensuring the reliability of the waterproof function.

[0058] 4. Characteristics of cylindrical roller coating forming process

[0059] The cylindrical roller coating forming process is a brand-new design of the tireless self-adhesive forming process. It not only takes into account the advantages and disadvantages of the previous processes, intercepts the advantages of the extrusion method and the scraping method, but also shields the disadvantages of the extrusion method and the scraping method. Therefore, the appearance of the product is greatly improved, the surface of the coil is smooth, and the hollowing phenomenon and water penetration phenomenon caused by the wrinkles of the product during the waterproof paving process are overcome, making the waterproof effect more reliable. The metal sheet is a key component of the forming equipment. Due to the ultra-short thin plate design, the equipment manufacturing, maintenance and replacement become convenient, thereby reducing the production cost of the self-adhesive coil produced.

[0060] Combination Figure 2 As shown, the molding process of the tireless modified asphalt waterproofing membrane of the present invention comprises the following steps:

[0061] S1, film supply

[0062] The unrolled lower film formed by the lower film unwinding roller is sent forward and downward to the cooling unit after being attached to the top surface of the annular transmission steel belt from bottom to top, wherein the front and rear ends of the annular transmission steel belt relatively flatten the lower film, and the lower film and the annular transmission steel belt at the flattening section keep moving forward synchronously;

[0063] S2, rubber strip roller coating and extrusion

[0064] Add rubber into the hopper, and the hopper itself performs heat exchange on the internal rubber. When the coating roller at the material inlet contacts the lower film of the flattening section, the movement of the lower film drives the coating roller to rotate in the opposite direction. At this time, the rubber in the hopper is formed on the top surface of the lower film by the coating roller and the annular transmission steel belt in a synchronous extrusion and roller coating manner, and the spreading speed of the rubber in the flattening section matches the rotation speed of the coating roller and the running speed of the annular transmission steel belt so that a rubber layer of equal thickness is formed on the lower film of the flattening section.

[0065] S3, film covering

[0066] The unwound upper film passes through the upper film transmission roller and the front end of the annular transmission steel belt, and the corresponding part of the upper film of the annular transmission steel belt keeps the rubber layer of equal thickness on the lower film to form a coil prototype, wherein the upper film is adaptively adjusted according to the change of the covering angle, so that the upper film and the lower film are laminated under zero tension;

[0067] S4, cooling molding

[0068] The roll material prototype is sent forward and downward to the cooling unit for cooling, and is gradually cooled through multiple passes to complete the forming of the tireless modified asphalt waterproof roll material.

[0069] In summary, the present invention is based on the transmission of an endless transmission steel belt, and the coating rollers that move in opposite and synchronous directions extrude and roll the rubber onto the top surface of the lower film synchronously, and the spreading speed of the rubber formed by the discharge gap matches the speed of the endless transmission steel belt to make the rubber layer of equal thickness, and at the same time, the upper film is covered under zero tension, which not only makes the surface of the coiled material smooth, but also eliminates internal stress release during storage, and wrinkles are not easy to form on the surface of the coiled material, thereby overcoming the hollowing phenomenon and water seepage phenomenon caused by product wrinkles during waterproof paving, and making the waterproof effect more reliable; at the same time, based on active scraping, hard impurities in the rubber can be wrapped and brought out, reducing scratching damage to the endless transmission steel belt and the surface material of the coiled material, and implementing equal thickness coverage of the rubber layer under zero tension and angle formed by the upper film, effectively shortening the required length of the endless transmission steel belt, thereby reducing production and use costs.

[0070] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A forming device for a tireless modified asphalt waterproofing membrane, comprising a material layer supply unit and a cooling unit, wherein the material layer supply unit comprises an upper film supply component, a rubber material supply component, and a lower film supply component, characterized in that: The lower film feeding assembly comprises a lower film unwinding roller and an annular transmission steel belt extending in the front-to-back direction, wherein the lower film unwinding from the lower film unwinding roller is fed from bottom to top and adheres to the top surface of the annular transmission steel belt before being fed forward and downward to the cooling unit; The rubber material feeding assembly comprises a hopper extending along the width direction of the endless transmission steel belt and forming a discharge port at the bottom, and a coating roller rotating around the length direction of the hopper and arranged at the discharge port at the bottom of the hopper, wherein the hopper can exchange heat with the rubber material inside itself, the bottom of the coating roller is exposed from the discharge port, and the size of the discharge gap formed by the coating roller and the discharge port is adjustable, the lower film passes between the coating roller and the endless transmission steel belt, and the coating roller moves toward each other with the endless transmission steel belt to synchronously extrude and roll-coat the rubber material in the hopper to the top surface of the lower film, and the paving speed formed by the discharge gap after the rubber material is self-adjusted matches the speed of the endless transmission steel belt to make the rubber layer have the same thickness; The upper film feeding assembly includes an upper film unwinding roller and an upper film conveying roller, wherein the unwinding upper film passes through the upper film conveying roller and the front end of the annular conveying steel belt, and the corresponding part of the upper film of the annular conveying steel belt keeps the rubber layer of equal thickness covering the lower film so that the upper film and the lower film both form a roll material prototype under zero tension, and the roll material prototype is sent forward and downward to the cooling unit for cooling to complete the forming of the tireless modified asphalt waterproof roll material.

2. The molding equipment of the tireless modified asphalt waterproofing membrane according to claim 1, characterized in that: The width w of the discharge gap formed between the paint roller and the discharge port is ≤5mm; and / or the glue feeding assembly further comprises a gap size fine-tuning component for driving the paint roller to move up and down to fine-tune the gap width.

3. The forming equipment of the tireless modified asphalt waterproofing membrane according to claim 2 is characterized in that: The gap size fine-tuning component includes an axial end seat formed at the two axial ends of the paint roller, and a power screw installed on each axial end seat and extending up and down, wherein each power screw and the axial end seat form a screw assembly, and when the screw rotates, the axial end seat moves up and down to adjust the gap width.

4. The molding equipment of the tireless modified asphalt waterproofing membrane according to claim 1, characterized in that: The coating roller forms a rubber compensation roller groove in the circumferential direction, wherein the compensation rubber formed from the rubber compensation roller groove covers the entire lower film in the width direction of the endless transmission steel belt.

5. The forming equipment of the tireless modified asphalt waterproofing membrane according to claim 4, characterized in that: The rubber compensation roller groove is a groove extending along the length direction of the paint roller.

6. The molding equipment of the tireless modified asphalt waterproofing membrane according to claim 1, characterized in that: The outer side of the hopper forms a heat exchange jacket, wherein a medium is added into the heat exchange jacket to perform heat exchange of the internal rubber material.

7. The molding equipment of the tireless modified asphalt waterproofing membrane according to claim 1, characterized in that: The upper film passing through the front end of the circular transmission steel belt is divided into a feeding section, a laminating section, and a cooling section, wherein the feeding section forms an acute angle with the top surface of the circular transmission steel belt and is located on the upper side of the circular transmission steel belt; the laminating section is formed by the upper film, the rubber layer, and the lower film at the front end of the circular transmission steel belt, and the upper film is pressed inward to cover; the cooling section is located between the laminating section and the cooling unit and maintains the prototype of the coil formed by the relative clamping of the rubber layer between the upper and lower films, wherein the feeding section and the cooling section form an angle of ∠1, and the angle formed between the feeding section and the top surface of the circular transmission steel belt is ∠2, 180°-∠1≤∠2, and ∠2 adjusts the covering pressure as the position of the upper film transmission roller changes.

8. The molding equipment of the tireless modified asphalt waterproofing membrane according to claim 7, characterized in that: The cooling unit includes a cooling section and an output section formed by cooling rollers, wherein the coil prototype in the cooling section is horizontally arranged, and the output section is outputted upward at an angle from the output end of the cooling section, the angle formed between the cooling section and the section to be cooled is ∠3, and the angle formed between the cooling section and the output section is ∠4, wherein ∠1>∠3≥∠4.

9. The molding equipment of the tireless modified asphalt waterproofing membrane according to claim 1, characterized in that: The endless transmission steel belt comprises a driving roller and a driven roller distributed front and back, and an endless steel belt, wherein the coating roller is located above the driven roller, and the upper film transmission roller is located above the rear side of the driving roller; And / or, the upper film unwinding roller is located between the upper film conveying roller and the active roller and above the upper film conveying roller.

10. A molding process for a tireless modified asphalt waterproofing membrane, characterized in that: It adopts the molding equipment of the tireless modified asphalt waterproofing membrane according to any one of claims 1 to 9, and comprises the following steps: S1, film supply The unrolled lower film formed by the lower film unwinding roller is sent forward and downward to the cooling unit after being attached to the top surface of the annular transmission steel belt from bottom to top, wherein the front and rear ends of the annular transmission steel belt relatively flatten the lower film, and the lower film and the annular transmission steel belt at the flattening section keep moving forward synchronously; S2, rubber strip roller coating and extrusion The hopper itself performs heat exchange on the internal rubber material, and the coating roller at the material inlet contacts the lower film of the flattening section, and the movement of the lower film drives the coating roller to rotate in the opposite direction. At this time, the rubber material in the hopper is formed on the top surface of the lower film by the coating roller and the annular transmission steel belt in a synchronous extrusion and roller coating manner, and the spreading speed of the rubber material in the flattening section matches the rotation speed of the coating roller and the running speed of the annular transmission steel belt so that a rubber layer of equal thickness is formed on the lower film of the flattening section; S3, film covering The unwound upper film passes through the upper film transmission roller and the front end of the annular transmission steel belt, and the corresponding part of the upper film of the annular transmission steel belt keeps the rubber layer of equal thickness on the lower film to form a coil prototype, wherein the upper film is adaptively adjusted according to the change of the covering angle, so that the upper film and the lower film are laminated under zero tension; S4, cooling molding The roll material prototype is sent forward and downward to the cooling unit for cooling, and is gradually cooled through multiple passes to complete the forming of the tireless modified asphalt waterproof roll material.

Images