Manufacturing process and equipment of flexible fireproof rock wool product

Abstract

The invention relates to the technical field of building construction materials, in particular to a manufacturing process and equipment of a flexible fireproof rock wool product, and the manufacturing process comprises the following steps: S1, preparing raw materials, crushing and melting; s3, collecting the cotton and distributing the cotton, and performing felt laying, pleating, pressurizing and preliminary forming on fibers with the binder through a pendulum bob; S4, curing, and performing curing treatment in a curing oven; S5, kneading and pressing, and performing double-sided kneading and pressing on the cured rock wool fibers between compression rollers; and S6, cutting and packaging. According to the technical scheme, the compression roller kneading process is added, compression roller parameters are accurately controlled, rock wool fiber arrangement is optimized, so that the product flexibility is remarkably improved, meanwhile, raw material adjustment is not relied on, the original heat preservation, sound insulation and other performance of rock wool are not reduced, and the rock wool with flexibility is made to be a novel wall material meeting the complex modeling requirement.

Description

Technical Field

[0001] This invention relates to the field of building construction materials technology, specifically to a manufacturing process and equipment for flexible fireproof rock wool products. Background Technology

[0002] Thermal insulation materials generally refer to materials with a thermal conductivity of less than or equal to 0.2. The development of thermal insulation materials is rapid; in industry and construction, the use of good insulation technologies and materials can often achieve twice the result with half the effort. Rock wool products, due to their excellent thermal insulation and fire resistance properties, have become a new type of wall material widely used in construction, industry, and shipbuilding. However, with the diversification of scenarios and the increasing complexity of structures, higher requirements are being placed on traditional rock wool.

[0003] In the construction industry, complex building designs and the insulation of various types of equipment and pipelines in the field of high-temperature piping require rock wool products with good flexibility and conformability. Rigid rock wool boards need to be cut and spliced, which is inefficient and prone to gaps, affecting the insulation effect and greatly limiting its application range. At present, methods to improve the flexibility of rock wool mainly focus on adjusting fiber diameter and optimizing binder formulation. Reducing the amount of binder will reduce the product strength, while adding flexible fibers will increase costs, with limited effect and possible sacrifice of other properties. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a manufacturing process and equipment for flexible fireproof rock wool products. The manufacturing process for flexible fireproof rock wool products includes the following steps: S1. Raw material preparation, crushing and melting treatment; S2. Material fiberization: The molten material in step one is centrifuged into fibers, and binders and dust-proofing oil are added at the same time as cotton formation. S3, cotton and fabric, fibers with adhesive are laid out by pendulum, pleated, pressed and initially shaped; S4. Curing: The product is placed in a curing oven for curing treatment. S5. Kneading and pressing: The cured rock wool fibers are kneaded and pressed on both sides between the pressure rollers. S6. Cutting and packaging.

[0005] To improve the flexibility of the cured rock wool through kneading, the following features were specifically designed: A manufacturing equipment for flexible fireproof rock wool products, applied to a manufacturing process of flexible fireproof rock wool products, includes a conveying roller group placed at the outlet end of a curing furnace, and a kneading device disposed on the conveying roller group. The kneading device includes a mounting frame horizontally placed on the conveying roller group, and a rigid kneading roller group and a flexible kneading roller group disposed on the mounting frame. The rigid kneading roller group is located on one side of the input end of the conveying roller group. Both the rigid kneading roller group and the flexible kneading roller group include an upper pressure roller and a lower pressure roller distributed vertically, and a drive unit for driving the upper pressure roller and the lower pressure roller to rotate. The upper surface of the lower pressure roller is flush with the conveying surface of the conveying roller group. The upper pressure roller is mounted on a lifting frame. The mounting frame is provided with a linear drive for driving the lifting frame to move vertically. The rigid kneading roller group and the flexible kneading roller group are provided with a gap detection component for detecting the gap between the upper pressure roller and the lower pressure roller. The lifting frame is provided with a horizontal transition plate on the output side of the upper pressure roller and the lower pressure roller.

[0006] The gap between the upper and lower rollers of the rigid kneading roller group is set to % to % of the initial thickness of the rock wool; the gap between the upper and lower rollers of the flexible kneading roller group is set to % to % of the initial thickness of the rock wool.

[0007] The upper and lower pressure rollers of the rigid kneading roller assembly are made of metal. The upper and lower pressure rollers of the flexible kneading roller assembly are made of rubber, and the hardness of the upper and lower pressure rollers is Shore A to 1.

[0008] The rotational speed of the rigid kneading roller assembly is lower than that of the flexible kneading roller assembly.

[0009] To improve the surface flexibility of the kneaded rock wool by beating it, the following features are specifically designed: The transition plate is tangent to both the upper and lower pressure rollers. The transition plate, flush with the upper pressure roller, has two relatively independent left and right parts. Each of the left and right parts of the transition plate has several horizontally intersecting forks. Each of the left and right parts of the upper transition plate has several vertical guide rods. The guide rods are coaxially inserted into guide sleeves on the lifting frame. The top of the guide rod has a limit head. A spring is coaxially sleeved on the guide rod, and the spring elastically connects the limit head and the guide sleeve, causing the transition plate to tend to move upward. A shaft is rotatably mounted on the lifting frame. The shaft is parallel to the upper pressure roller. A conical transmission wheel is coaxially mounted on the shaft and is connected to one end of the upper pressure roller. Cams are coaxially mounted on both ends of the shaft. The cams at both ends of the shaft are symmetrically arranged. Each of the left and right parts of the upper transition plate has a contact block that fits around the cam.

[0010] To achieve adaptive adjustment of the transition plate's beating frequency based on the thickness of the rock wool product being kneaded, the following features are specifically designed: the upper pressure roller and the conical transmission wheel are connected by a transmission steel belt, the transmission steel belt is installed in a steel belt mounting seat, the steel belt mounting seat is slidably installed on the lifting frame and moves along the axis of the upper pressure roller, one end of the steel belt mounting seat is provided with a vertically extending longitudinal groove, a slider is slidably installed in the longitudinal groove, a horizontal adjusting column is provided on the slider, an adjusting seat is fixedly installed on the inner side of the mounting frame, the adjusting seat is provided with an inclined, extending waist-shaped hole, and the adjusting column is limited and inserted into the waist-shaped hole.

[0011] To facilitate the conveying of rock wool products into the rigid kneading roller assembly, the following features are specifically designed: The mounting frame is provided with two guide plates at the input end of the rigid kneading roller assembly, and the distance between the guide plates decreases towards the rigid kneading roller assembly.

[0012] To accurately detect the gap between the upper and lower pressure rollers, the following features were specifically designed: The spacing detection assembly includes a first slide seat coaxially sleeved on one end of the upper pressure roller and a second slide seat coaxially sleeved on one end of the lower pressure roller. Parallel fixed slide rails are provided on both sides of the second slide seat, and the first slide seat is slidably mounted within the fixed slide rails. A distance sensor is installed inside the first slide seat, and the distance sensor is used to detect the spacing between the first and second slide seats. The distance sensor is connected to a linear driver via a controller signal.

[0013] In order to remove the broken fibers generated on the surface of rock wool products during the kneading and patting process, the following features are specifically designed: absorption boxes are provided on both sides of the mounting frame, the absorption boxes are connected to the input end of the vacuum cleaner through pipes, and the opening end of the absorption box is located on both sides of the rigid kneading roller group and the flexible kneading roller group.

[0014] The beneficial effects of this invention compared to the prior art are as follows: This invention adds a pressing and kneading process to the original manufacturing process. By precisely controlling the parameters of the pressing rollers and optimizing the arrangement of rock wool fibers, the flexibility of the product is significantly improved. At the same time, it does not rely on raw material adjustments and does not reduce the original heat insulation, sound insulation and other properties of rock wool. This makes the soft rock wool molded to meet the needs of complex shapes, creating a new type of wall material. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 The figures show the specific experimental data for Experimental Example 1, Comparative Example 1, Experimental Example 2, and Comparative Example 2.

[0017] Figure 2 A perspective view of a manufacturing equipment for flexible fireproof rock wool products.

[0018] Figure 3 A side view of a manufacturing equipment for flexible fireproof rock wool products.

[0019] Figure 4 for Figure 3 A partially enlarged view of the cross-sectional view at point AA.

[0020] Figure 5 for Figure 4 A magnified view of section B.

[0021] Figure 6 This is a perspective view of a kneading device in a manufacturing equipment for flexible fireproof rock wool products.

[0022] Figure 7 This is a top view of the kneading device in a manufacturing equipment for flexible fireproof rock wool products.

[0023] Figure 8 for Figure 7 Sectional view at point CC.

[0024] Figure 9 A three-dimensional structural breakdown of the kneading device in a manufacturing equipment for flexible fireproof rock wool products. Figure 1 .

[0025] Figure 10 for Figure 9 A magnified view of a portion of point D.

[0026] Figure 11 A three-dimensional structural breakdown of the kneading device in a manufacturing equipment for flexible fireproof rock wool products. Figure 2 .

[0027] Figure 12 for Figure 11 A magnified view of a portion at point E.

[0028] Explanation of reference numerals in the attached drawings: 1. Conveyor roller assembly; 2. Mounting frame; 2a. Linear driver; 2b. Guide plate; 2c. Adjusting seat; 2c1. Waist-shaped hole; 3. Rigid kneading roller assembly; 3a. Upper pressure roller; 3b. Lower pressure roller; 3c. Lifting frame; 3c1. Guide sleeve; 3c2. Shaft; 3c3. Conical transmission wheel; 3c4. Cam; 3d. Spacing detection component; 3d1. First slide; 3d2. Second slide; 3d3. Fixed slide rail; 3d4. Distance sensor; 3e. Transition plate; 3e1. Fork bar; 3e2. Guide rod; 3e3. Limiting head; 3e4. Spring; 3e5. Adhesive block; 3f. Transmission steel belt; 3f1. Steel belt mounting seat; 3f2. Longitudinal groove; 3f3. Slider; 3f4. Adjusting column; 4. Flexible kneading roller assembly. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] A manufacturing process for flexible fireproof rock wool products includes the following steps: S1. Raw material preparation, crushing and melting treatment; S2. Material fiberization: The molten material in step one is centrifuged into fibers, and binders and dust-proofing oil are added at the same time as cotton formation. S3, cotton and fabric, fibers with adhesive are laid out by pendulum, pleated, pressed and initially shaped; S4. Curing: The product is placed in a curing oven for curing treatment. S5. Kneading and pressing: The cured rock wool fibers are kneaded and pressed on both sides between the pressure rollers. S6. Cutting and packaging.

[0031] The manufacturing process of rock wool products in this application adds a pressing and kneading step to the original manufacturing process. By precisely controlling the pressing roller parameters and optimizing the rock wool fiber arrangement, the product's flexibility is significantly improved. This process does not rely on raw material adjustments and does not reduce the original thermal insulation and sound insulation properties of the rock wool, resulting in a new type of wall material with flexible rock wool that meets the needs of complex shapes. The kneading step optimizes the fiber structure of the rock wool through the pressing rollers, allowing the rock wool products to adapt to smaller bending radii and meet the construction needs of complex curved surfaces. The gap between the pressing rollers is determined based on the thickness of the target rock wool product and the desired softness. To produce thin rock wool felt with good softness, the gap can be set to 40%-50% of the original thickness of the rock wool; for relatively thicker rock wool boards with slightly lower softness requirements, the gap can be adjusted to 50%-70% of the original thickness. Alternatively, one or two pressing rollers can be used depending on the actual requirements.

[0032] refer to Figures 2 to 11 To improve the flexibility of the cured rock wool by kneading it, the following features were specifically designed: A manufacturing apparatus for flexible fireproof rock wool products, applied to a manufacturing process of flexible fireproof rock wool products, includes a conveyor roller group 1 placed at the outlet end of a curing furnace, and a kneading device disposed on the conveyor roller group 1. The kneading device includes a mounting frame 2 horizontally placed on the conveyor roller group 1, and a rigid kneading roller group 3 and a flexible kneading roller group 4 disposed on the mounting frame 2. The rigid kneading roller group 3 is located on one side of the input end of the conveyor roller group 1. Both the rigid kneading roller group 3 and the flexible kneading roller group 4 include an upper pressure roller 3a and a lower pressure roller 3b distributed vertically. The upper pressure roller 3a and the lower pressure roller 3b are driven by a drive unit. The upper surface of the lower pressure roller 3b is flush with the conveying surface of the conveying roller group 1. The upper pressure roller 3a is mounted on the lifting frame 3c. The mounting frame 2 is equipped with a linear driver 2a for driving the lifting frame 3c to move in the vertical direction. The rigid kneading roller group 3 and the flexible kneading roller group 4 are equipped with a gap detection component 3d for detecting the gap between the upper pressure roller 3a and the lower pressure roller 3b. The lifting frame 3c is located on the output side of the upper pressure roller 3a and the lower pressure roller 3b and is equipped with a horizontal transition plate 3e.

[0033] The gap between the upper pressure roller 3a and the lower pressure roller 3b of the rigid kneading roller group 3 is set to 60% to 90% of the initial thickness of the rock wool; the gap between the upper pressure roller 3a and the lower pressure roller 3b of the flexible kneading roller group 4 is set to 40% to 70% of the initial thickness of the rock wool.

[0034] The upper pressure roller 3a and lower pressure roller 3b of the rigid kneading roller group 3 are made of metal. The upper pressure roller 3a and lower pressure roller 3b of the flexible kneading roller group 4 are made of rubber, and the hardness of the upper pressure roller 3a and lower pressure roller 3b is Shore A 60 to 70.

[0035] The rotational speed of the rigid kneading roller group 3 is lower than that of the flexible kneading roller group 4.

[0036] The manufacturing equipment in this application achieves progressive compression and shaping of rock wool felt through segmented coordinated control of rigid kneading roller group 3 and flexible kneading roller group 4. The rock wool product, cured in a curing oven, is conveyed to conveying roller group 1 located at the outlet of the curing oven. Conveying roller group 1 smoothly conveys it to the kneading device mounted on conveying roller group 1. In this embodiment, the kneading device is fixed to the movement path of the rock wool product by a mounting bracket 2 horizontally placed on conveying roller group 1. The rock wool product first enters the rigid kneading roller group 3 located on one side of the input end of conveying roller group 1. The drive unit drives the upper pressure roller 3a and lower pressure roller 3b of the rigid kneading roller group 3 to rotate synchronously. After initial kneading, the transition plate 3e, in conjunction with the transition plate 3e, conveys the rock wool to the flexible kneading roller group 4. The rotational speed of the upper pressure roller 3a and lower pressure roller 3b of the flexible kneading roller group 4 is greater than that of the rigid kneading roller group 3. Therefore, while performing secondary flexible kneading on the rock wool product, a certain horizontal traction is generated in the rock wool, thereby optimizing the arrangement structure of the rock wool fibers and significantly improving the softness of the product. This embodiment can be directly adapted to traditional rock wool production lines without significant modifications. The drive unit in this embodiment can be any existing technology, such as a motor with a reducer, which will not be elaborated further and is not shown in the figure. In this embodiment, the rigid kneading roller group 3 is the first process. Its upper pressure roller 3a and lower pressure roller 3b are made of metal, and their spacing is larger than that of the upper pressure roller 3a and lower pressure roller 3b of the flexible kneading roller group 4. This process performs preliminary compression and combing of the rock wool fibers, avoiding direct high pressure that could damage the internal structure. In this embodiment, the flexible kneading roller group 4 is the second process. By adjusting the gap between the upper pressure roller 3a and lower pressure roller 3b, dynamic compensation is achieved using the elastic properties of rubber. The rubber upper pressure roller 3a and lower pressure roller 3b can absorb 5% fluctuations in the rock wool thickness, preventing local overpressure that could cause structural damage. The deformation of the roller surface increases the contact area, allowing pressure to penetrate into the rock wool, achieving preliminary compaction, while retaining some pore structure to maintain insulation performance. In this embodiment, the linear actuator 2a can be a cylinder, a hydraulic cylinder, or an electric push rod, etc. The linear actuator 2a drives the lifting frame 3c, which is equipped with the pressure roller 3a, to move vertically. In conjunction with the spacing detection component 3d, it can accurately and stably control the kneading parameters, adapt to rock wool products of different thicknesses and fiber densities, and enhance the versatility of the equipment.

[0037] In a practical scenario, Experiment 1, following the process and equipment described in this application, involved online softening of 60K-50mm rock wool felt. The steps were as follows: Basalt or diabase of a certain particle size, blast furnace slag, dolomite, etc., were mixed with an appropriate amount of coke and loaded into a cupola furnace. The raw materials were melted under high-temperature conditions inside the cupola furnace, and the melt flowed out through a fixed nozzle at the bottom of the furnace. Under the centrifugal force of the high-speed rotating rollers in the centrifuge, the flow was gradually spun into fibers. The cotton fibers were then fed into a cotton collecting machine under high-pressure blowing for collection. Simultaneously, binder and dust-proofing oil were sprayed. The cotton felt with binder was then laid by a pendulum, pleated, pressed, and initially shaped. Finally, it entered a curing oven for curing treatment to improve its hardness and durability. The cured rock wool fibers are fed into a kneading device via a conveyor roller assembly. The parameters are set as follows: rigid kneading roller assembly 3 has a pressure of 0.7 MPa, a linear speed of 0.9 m / min, and a distance of 30 mm between the upper pressure roller 3a and the lower pressure roller 3b; flexible kneading roller assembly 4 has a pressure of 0.9 MPa, a linear speed of 1.1 m / min, and a distance of 20 mm between the upper pressure roller 3a and the lower pressure roller 3b.

[0038] In Experiment 2, following the process and equipment described in this application, rock wool boards of 80K-100mm were selected for online softening. The same steps were used and the parameters were adjusted as follows: the rigid kneading roller group 3 had a pressure of 0.6MPa, a linear speed of 1.0m / min, and a distance of 65mm between the upper pressure roller 3a and the lower pressure roller 3b; the flexible kneading roller group 4 had a pressure of 0.8MPa, a linear speed of 1.2m / min, and a distance of 55mm between the upper pressure roller 3a and the lower pressure roller 3b.

[0039] Meanwhile, Comparative Example 1 was set up with the same sample specifications as Experimental Example 1, but without the online kneading process; Comparative Example 2 was set up with the same sample specifications as Experimental Example 2, but without the online kneading process. Specific experimental data are as follows: Figure 1 As shown.

[0040] To improve the surface flexibility of the kneaded rock wool by beating it, the following features are specifically designed: The transition plate 3e is tangent to the upper pressure roller 3a and the lower pressure roller 3b respectively. The transition plate 3e, which is flush with the upper pressure roller 3a, has two relatively independent left and right parts. The left and right parts of the transition plate 3e are respectively provided with several horizontally intersecting forks 3e1. The left and right parts of the upper transition plate 3e are each provided with several vertical guide rods 3e2. The guide rods 3e2 are coaxially inserted into the guide sleeves 3c1 provided on the lifting frame 3c. The top of the guide rods 3e2 is provided with a limiting head 3e3. A spring 3e4 is coaxially sleeved on the guide rods 3e2. The spring 3e4 elastically connects the limiting head 3e3 and the guide sleeve 3c1. The spring 3e4 causes the transition plate 3e to have an upward tendency. A shaft 3c2 is rotatably mounted on the lifting frame 3c. The shaft 3c2 is parallel to the upper pressure roller 3a. A conical transmission wheel 3c3 is coaxially mounted on the shaft 3c2. The conical transmission wheel 3c3 is connected to one end of the upper pressure roller 3a. Cams 3c4 are coaxially mounted on both ends of the shaft 3c2. The cams 3c4 at both ends of the shaft 3c2 are symmetrically arranged. The left and right parts of the upper transition plate 3e are respectively provided with fitting blocks 3e5 that fit the periphery of the cams 3c4.

[0041] like Figures 4 to 11 As shown, in this embodiment, after being kneaded, the rock wool is moved and conveyed between the transition plates 3e on the output side of the lifting frame 3c. When the upper pressure roller 3a rotates, it drives the conical transmission wheel 3c3 to rotate, which in turn drives the shaft 3c2 and the cam 3c4 to rotate synchronously. Since the cams 3c4 on both sides are symmetrically arranged, the periphery of the cam 3c4 continuously acts on the bonding blocks 3e5 of the left and right parts of the transition plate 3e located on the upper side, pushing the left and right parts of the transition plate 3e to move up and down alternately. This causes the forks 3e1 on the left and right parts of the transition plate 3e to alternately pat the upper surface of the kneaded rock wool product, further loosening and stretching the kneaded rock wool fibers, effectively improving the surface flexibility and flatness of the rock wool, and improving the lateral uniformity of the rock wool limit. When the transition plate 3e moves, it drives the guide rod 3e2 to slide coaxially within the guide sleeve 3c1 of the lifting frame 3c. The spring 3e4 on the guide rod 3e2 elastically extends and retracts between the limiting head 3e3 and the guide sleeve 3c1, providing an upward restoring force for the transition plate 3e, thereby enabling the transition plate 3e to perform continuous, slight-amplitude patting operations on the rock wool. In this embodiment, the cam 3c4 is driven directly by the power of the upper pressure roller 3a, eliminating the need for an additional independent drive device. The structure is compact and the transmission is synchronous and stable. The transition plate 3e achieves smooth and elastic patting with the cooperation of the guide rod 3e2, the guide sleeve 3c1, and the spring 3e4, which can further loosen and stretch the kneaded rock wool fibers, effectively improving the surface flexibility and flatness of the rock wool.

[0042] To achieve adaptive adjustment of the beating frequency of the transition plate 3e according to the thickness of the rock wool product being kneaded, the following features are specifically designed: the upper pressure roller 3a and the conical transmission wheel 3c3 are connected by a transmission steel belt 3f. The transmission steel belt 3f is installed in a steel belt mounting seat 3f1. The steel belt mounting seat 3f1 is slidably installed on the lifting frame 3c and moves along the axis of the upper pressure roller 3a. One end of the steel belt mounting seat 3f1 is provided with a vertically extending longitudinal sliding groove 3f2. A slider 3f3 is slidably installed in the longitudinal sliding groove 3f2. A horizontal adjusting column 3f4 is provided on the slider 3f3. An adjusting seat 2c is fixedly installed on the inner side of the mounting frame 2. An inclined waist-shaped hole 2c1 is provided on the adjusting seat 2c. The adjusting column 3f4 is inserted into the waist-shaped hole 2c1 for limiting.

[0043] like Figure 5 , Figure 11 and Figure 12 In this embodiment, the upper pressure roller 3a and the conical transmission wheel 3c3 are connected by a transmission steel belt 3f. The movement of the transmission steel belt 3f along the axis of the upper pressure roller 3a changes the contact area between the transmission steel belt 3f and the conical transmission wheel 3c3. When the transmission steel belt 3f contacts the larger diameter portion of the conical transmission wheel 3c3, the transmission ratio between the upper pressure roller 3a and the shaft 3c2 decreases, thereby slowing down the rotational speed of the shaft 3c3 and the cam 3c4, and consequently reducing the striking frequency of the transition plate 3e. Based on this, in this embodiment, the steel belt mounting seat 3f1 for mounting the transmission steel belt 3f is slidably mounted on the lifting frame 3c. When the lifting frame 3c moves vertically, the adjusting column 3f4 at one end of the steel belt mounting seat 3f1 is fixedly mounted on one side of the mounting frame 2. The oblong hole 2c1 within the section seat 2c moves, and the adjusting column 3f4 drives the slider 3f3 to move accordingly within the longitudinal sliding groove 3f2, thereby driving the steel belt mounting seat 3f1 to move along the axis of the upper pressure roller 3a, changing the position of the transmission steel belt 3f, and realizing the change of transmission ratio. The operator only needs to match the tilt direction of the oblong hole 2c1 and the taper direction of the tapered transmission wheel 3c3 to achieve adaptive reduction of the tapping frequency of the transition plate 3e when the upper pressure roller 3a is pressing and lowering the height of thinner rock wool products to protect the thinner rock wool products. Conversely, when pressing and lowering the height of thicker rock wool products, the tapping frequency of the transition plate 3e is adaptively increased to improve the effect of relaxing the rock wool products.

[0044] like Figure 4 As shown, in order to facilitate the entry of rock wool products conveyed by conveyor roller group 1 into rigid kneading roller group 3, the following features are specifically designed: Mounting bracket 2 is provided with two guide plates 2b at the input end of rigid kneading roller group 3, with the distance between the guide plates 2b decreasing towards the rigid kneading roller group 3.

[0045] To accurately detect the gap between the upper pressure roller 3a and the lower pressure roller 3b, the following features are specifically designed: The spacing detection component 3d includes a first slide block 3d1 coaxially sleeved on one end of the upper pressure roller 3a and a second slide block 3d2 coaxially sleeved on one end of the lower pressure roller 3b. Parallel fixed slide rails 3d3 are provided on both sides of the second slide block 3d2, and the first slide block 3d1 is slidably installed in the fixed slide rails 3d3. A distance measuring sensor 3d4 is provided in the first slide block 3d1, and the distance measuring sensor 3d4 is used to detect the spacing between the first slide block 3d1 and the second slide block 3d2.

[0046] The ranging sensor 3d4 is connected to the linear driver 2a via a controller signal.

[0047] like Figures 8 to 10As shown, when the upper pressure roller 3a moves vertically up and down with the lifting frame 3c, it drives the first slide block 3d1, which is coaxially mounted, to slide stably along the fixed slide rails 3d3 on both sides of the second slide block 3d2. The distance sensor 3d4 inside the first slide block 3d1 detects the distance between the first slide block 3d1 and the second slide block 3d2 in real time. The distance sensor 3d4 transmits the detection signal to the controller, which controls the linear drive 2a to move accordingly, so as to realize the precise closed-loop control of the distance between the upper pressure roller 3a and the lower pressure roller 3b.

[0048] In order to remove the broken fibers generated on the surface of the rock wool products during the kneading and patting process, absorption boxes 2d are provided on both sides of the mounting frame 2. The absorption boxes 2d are connected to the input end of the vacuum cleaner through pipes. The open ends of the absorption boxes 2d are located on both sides of the rigid kneading roller group 3 and the flexible kneading roller group 4.

[0049] like Figure 11 As shown, in this embodiment, when the vacuum cleaner is started, a negative pressure is generated on the opening side of the absorption box 2d, which absorbs the broken fibers bounced up from the surface of the rock wool product caused by the beating of the transition plate 3e, thereby improving the surface quality of the finished product. The vacuum cleaner in this embodiment can be any existing technology, which will not be described in detail here, and is not shown in the figure.

[0050] Working principle: After being cured in the curing oven, the rock wool products are conveyed to the conveyor roller group 1 located at the outlet of the curing oven. The conveyor roller group 1 then smoothly conveys the rock wool products to the kneading device set on the conveyor roller group 1. The rock wool products first enter the rigid kneading roller group 3 located on one side of the input end of the conveyor roller group 1. The drive unit drives the upper pressure roller 3a and the lower pressure roller 3b of the rigid kneading roller group 3 to rotate synchronously. After completing the initial kneading, the rock wool is conveyed to the flexible kneading roller group 4 with smaller spacing in conjunction with the transition plate 3e. The upper pressure roller 3a and the lower pressure roller 3b of the flexible kneading roller group 4 rotate at a higher speed than the rigid kneading roller group 3. Therefore, while performing secondary flexible kneading on the rock wool products, a certain horizontal traction is generated on the rock wool, thereby optimizing the arrangement structure of the rock wool fibers and significantly improving the softness of the product.

[0051] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A manufacturing process for flexible fireproof rock wool products, characterized in that, Includes the following steps: S1. Raw material preparation, crushing and melting treatment; S2. Material fiberization: The molten material in step one is centrifuged into fibers, and binders and dust-proofing oil are added at the same time as cotton formation. S3, cotton and fabric, fibers with adhesive are laid out by pendulum, pleated, pressed and initially shaped; S4. Curing: The product is placed in a curing oven for curing treatment. S5. Kneading and pressing: The cured rock wool fibers are kneaded and pressed on both sides between the pressure rollers. S6. Cutting and packaging.

2. A manufacturing equipment for flexible fireproof rock wool products, applied to the manufacturing process of a flexible fireproof rock wool product according to claim 1, comprising a conveying roller group (1) placed at the outlet end of a curing furnace, and a kneading device disposed on the conveying roller group (1), characterized in that, The kneading device includes a mounting frame (2) placed horizontally on the conveying roller group (1), and a rigid kneading roller group (3) and a flexible kneading roller group (4) set on the mounting frame (2). The rigid kneading roller group (3) is located on one side of the input end of the conveying roller group (1). Both the rigid kneading roller group (3) and the flexible kneading roller group (4) include an upper pressure roller (3a) and a lower pressure roller (3b) distributed vertically, and a drive unit for driving the upper pressure roller (3a) and the lower pressure roller (3b) to rotate. The upper surface of the lower pressure roller (3b) is flush with the conveying surface of the conveying roller group (1). The upper pressure roller (3a) is mounted on the lifting frame (3c). The mounting frame (2) is provided with a linear driver (2a) for driving the lifting frame (3c) to move vertically. The rigid kneading roller group (3) and the flexible kneading roller group (4) are provided with a spacing detection component (3d) for detecting the distance between the upper pressure roller (3a) and the lower pressure roller (3b). The lifting frame (3c) is provided with a horizontal transition plate (3e) on the output side of the upper pressure roller (3a) and the lower pressure roller (3b).

3. The manufacturing equipment for flexible fireproof rock wool products according to claim 2, characterized in that, The gap between the upper pressure roller (3a) and the lower pressure roller (3b) of the rigid kneading roller group (3) is set to 60% to 90% of the initial thickness of the rock wool; The gap between the upper pressure roller (3a) and the lower pressure roller (3b) of the flexible kneading roller group (4) is set to 40% to 70% of the initial thickness of the rock wool.

4. The manufacturing equipment for flexible fireproof rock wool products according to claim 2, characterized in that, The upper pressure roller (3a) and lower pressure roller (3b) of the rigid kneading roller group (3) are made of metal. The upper pressure roller (3a) and lower pressure roller (3b) of the flexible kneading roller group (4) are made of rubber, and the hardness of the upper pressure roller (3a) and lower pressure roller (3b) is Shore A60 to 70.

5. The manufacturing equipment for flexible fireproof rock wool products according to claim 2, characterized in that, The rotational speed of the rigid kneading roller group (3) is lower than that of the flexible kneading roller group (4).

6. The manufacturing equipment for flexible fireproof rock wool products according to claim 2, characterized in that, The transition plate (3e) is tangent to the upper pressure roller (3a) and the lower pressure roller (3b) respectively. The transition plate (3e) which is flush with the upper pressure roller (3a) has two relatively independent left and right parts. The left and right parts of the transition plate (3e) are respectively provided with several horizontally intersecting forks (3e1). The left and right parts of the upper transition plate (3e) are provided with several vertical guide rods (3e2). The guide rods (3e2) are coaxially inserted into the guide sleeves (3c1) provided on the lifting frame (3c). The top of the guide rods (3e2) is provided with a limit head (3e3). A spring (3e4) is coaxially sleeved on the guide rods (3e2). The spring (3e4) elastically connects the limit head (3e3) and the guide sleeve (3c1). The spring (3e4) causes the transition plate (3e) to have an upward tendency. A shaft (3c2) is rotatably mounted on the lifting frame (3c). The shaft (3c2) is parallel to the upper pressure roller (3a). A conical transmission wheel (3c3) is coaxially mounted on the shaft (3c2). The conical transmission wheel (3c3) is connected to one end of the upper pressure roller (3a). Cams (3c4) are coaxially mounted on both ends of the shaft (3c2). The cams (3c4) at both ends of the shaft (3c2) are symmetrically arranged. The left and right parts of the upper transition plate (3e) are respectively provided with fitting blocks (3e5) that fit the periphery of the cams (3c4).

7. The manufacturing equipment for flexible fireproof rock wool products according to claim 6, characterized in that, The upper pressure roller (3a) and the conical transmission wheel (3c3) are connected by a transmission steel belt (3f). The transmission steel belt (3f) is installed in a steel belt mounting seat (3f1). The steel belt mounting seat (3f1) is slidably installed on the lifting frame (3c) and moves along the axis of the upper pressure roller (3a). One end of the steel belt mounting seat (3f1) is provided with a vertically extending longitudinal groove (3f2). A slider (3f3) is slidably installed in the longitudinal groove (3f2). A horizontal adjusting column (3f4) is provided on the slider (3f3). An adjusting seat (2c) is fixedly installed on the inner side of the mounting frame (2). An inclined waist-shaped hole (2c1) is provided on the adjusting seat (2c). The adjusting column (3f4) is inserted into the waist-shaped hole (2c1) for limiting.

8. The manufacturing equipment for flexible fireproof rock wool products according to claim 2, characterized in that, The mounting bracket (2) is provided with two guide plates (2b) at the input end of the rigid kneading roller group (3), and the distance between the guide plates (2b) decreases in the direction of the rigid kneading roller group (3).

9. The manufacturing equipment for flexible fireproof rock wool products according to claim 2, characterized in that, The spacing detection component (3d) includes a first slide (3d1) coaxially sleeved on one end of the upper pressure roller (3a) and a second slide (3d2) coaxially sleeved on one end of the lower pressure roller (3b). Parallel fixed slide rails (3d3) are provided on both sides of the second slide (3d2), and the first slide (3d1) is slidably installed in the fixed slide rails (3d3). The first slide (3d1) is provided with a distance sensor (3d4), which is used to detect the distance between the first slide (3d1) and the second slide (3d2); the distance sensor (3d4) is connected to the linear driver (2a) through a controller signal.

10. The manufacturing equipment for flexible fireproof rock wool products according to claim 6, characterized in that, The mounting bracket (2) is provided with absorption boxes (2d) on both sides. The absorption boxes (2d) are connected to the input end of the vacuum cleaner through pipes. The open ends of the absorption boxes (2d) are located on both sides of the rigid kneading roller group (3) and the flexible kneading roller group (4).

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