Formula of automobile brake hose rubber protective sleeve and preparation process and equipment thereof

Abstract

The invention belongs to the technical field of automobile part preparation, and particularly relates to a formula of an automobile brake hose rubber protective sleeve and a preparation process and equipment thereof. The formula of the rubber protective sleeve for the automobile brake hose is prepared from the following components in parts by weight: 50 parts of SBR 1502, 50 parts of SSBR2305, 4 to 6 parts of zinc oxide, 1 to 2 parts of stearic acid SA1840, 0.1 to 1 part of vulcanizing agent S-80, 1.5 to 5 parts of accelerant, 40 to 50 parts of carbon black N550, 10 to 25 parts of carbon black N330, 10 to 20 parts of argil, 5 to 15 parts of talcum powder, 3 to 8 parts of aromatic oil, 2 to 8 parts of anti-aging agent and 2 to 5 parts of high styrene. Through reasonable formula design, multiple performance requirements of high strength, high temperature resistance, processability, aging resistance and the like are met, and the rubber material is particularly suitable for production and use of rubber protective sleeves of automobile brake hoses under severe conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts preparation, and in particular relates to a formula of an automobile brake hose rubber protective sleeve and a preparation process and equipment thereof. Background Art

[0002] With the rapid development of the automotive industry, the performance and durability of automotive parts are becoming more and more important, especially in the braking system. As one of the key components, the performance of the rubber protective cover of the brake hose directly affects the safety and reliability of the braking system. The rubber protective cover of the brake hose needs to have good tensile strength, temperature resistance, aging resistance and wear resistance to cope with harsh working conditions such as high temperature, chemicals and oxidative environments. Therefore, developing a formula for the rubber protective cover of automotive brake hoses that combines high performance, low cost and good processability is of great practical significance for improving the overall technical level of the automotive industry and enhancing automotive safety. Summary of the invention

[0003] The purpose of the present invention is to provide a formula of a rubber protective sleeve for an automobile brake hose and a preparation process and equipment thereof to solve the problems in the prior art. The specific technical scheme is as follows: The first aspect of the present invention provides a formula for a rubber protective cover for an automobile brake hose. The formula raw materials of the rubber protective cover for the automobile brake hose include the following components by weight: SBR1502: 50 parts, SSBR2305: 50 parts, zinc oxide: 4-6 parts, stearic acid SA1840: 1-2 parts, vulcanizing agent S-80: 0.1-1 parts, accelerator 1.5-5 parts, carbon black N550: 40-50 parts, carbon black N330: 10-25 parts, clay: 10-20 parts, talc: 5-15 parts, aromatic oil: 3-8 parts, antioxidant 2-8 parts, and high styrene: 2-5 parts.

[0004] Furthermore, the accelerator is compounded by accelerator CBS, accelerator TT and accelerator PZ in a mass ratio of (1-2): (0.5-1.5): (0.1-1).

[0005] Furthermore, the antioxidant is compounded by antioxidant RD, antioxidant MB, antioxidant 4010NA and antioxidant 4020 in a mass ratio of 1:1:1:1.

[0006] Furthermore, the formula of the rubber protective cover of the automobile brake hose includes the following components by weight: SBR1502: 50 parts, SSBR2305: 50 parts, zinc oxide: 5 parts, stearic acid SA1840: 1.5 parts, vulcanizing agent S-80: 0.5 parts, accelerator CBS: 1.5 parts, accelerator TT: 1 part, accelerator PZ: 0.5 parts, carbon black N550: 45 parts, carbon black N330: 20 parts, clay: 15 parts, talcum powder: 10 parts, aromatic oil: 5 parts, antioxidant RD: 1 part, antioxidant MB: 1 part, antioxidant 4010NA: 1 part, antioxidant 4020: 1 part, and high styrene: 3 parts.

[0007] The formula of the present invention uses high-strength SBR and high-temperature resistant SBR in combination, which not only ensures the tensile strength and elongation of the hose protection sleeve during assembly, but also meets the high-temperature resistance during use.

[0008] In order to reduce the cost, the process adopts a continuous extrusion vulcanization process. Therefore, the reinforcing agents carbon black N550 and carbon black N330 which are favorable for extrusion continuous vulcanization are used in the formula of the present invention.

[0009] The use of talcum powder can give the protective cover a certain sliding performance, which is helpful for subsequent sliding assembly.

[0010] Because the extrusion continuous vulcanization process is adopted, the formula must have a pressure-free, high-temperature vulcanization system. In the formula of the present invention, a variety of vulcanizing agents are used to meet the above requirements.

[0011] Since the extrusion continuous vulcanization process is adopted, the formula must ensure that the rubber material has sufficient stiffness during the extrusion process, and ensure that the extruded product does not deform and has good dimensional stability. High styrene is added to the formula of the present invention to ensure that the material has sufficient stiffness during the rubber material extrusion.

[0012] The use conditions of the hose rubber protective cover are harsh, so the formula must be combined with reasonable weather-resistant, aging-resistant and ozone-resistant additives to ensure the long-term use effect of the product. The invention adopts a variety of antioxidants in compounding and uses a reasonable anti-aging system.

[0013] The second aspect of the present invention provides a process for preparing the rubber protective sleeve of the automobile brake hose, comprising the following steps: S1. Add the raw materials into an internal mixer for mixing to form a rubber mixture; S2. The rubber mixture is fed into a cold feed extruder and extruded into a rubber protective sleeve; S3. The rubber protective cover enters the salt bath vulcanization tank through a conveyor belt for salt bath vulcanization; S4. The rubber protective cover after salt bath vulcanization enters the water washing mechanism through conveyor belt 2 for surface cleaning; S5. The cleaned rubber protective cover is cut into a preset length by a cutting machine.

[0014] Further, in step S3, the salt solution at the tail end of the salt bath vulcanization tank enters the filtration system through the reflux pipe 2, and enters the evaporation furnace after being filtered by the filtration system.

[0015] Further, in step S3, after the salt solution in the evaporation furnace is evaporated to a preset concentration, it is pressed into the salt bath vulcanization tank through the pressure pipe 2 under the pressure of the pressure pump 2 to continue salt bath vulcanization of the rubber protective sleeve.

[0016] Further, in step S4, the cleaning water in the water washing mechanism enters the wastewater collection tank through the reflux pipe 1, and under the pressure of the booster pump 1, the cleaning water is pressed into the filtration system through the booster pipe 1.

[0017] The third aspect of the present invention also provides a preparation device for a rubber protective cover of an automobile brake hose, which is used to prepare the rubber protective cover according to the preparation process of the rubber protective cover of an automobile brake hose described in any of the above items, and includes an internal mixer, which is installed at the feeding port of the extruder, and the extruder is fixedly installed with a salt bath vulcanization tank through a conveyor belt 1, and the salt bath vulcanization tank is fixedly installed with a water washing mechanism through a conveyor belt 2, and a cutting machine is installed at the end of the water washing mechanism.

[0018] Furthermore, the water washing mechanism is fixedly installed with the wastewater collection box through a reflux pipe, the wastewater collection box is fixedly installed with the filtering system through a pressurizing pipe, and a pressurizing pump is provided in the middle of the pressurizing pipe.

[0019] Furthermore, the tail end of the salt bath vulcanization tank is fixedly installed with the filtering system through the second reflux pipe, the front end of the salt bath vulcanization tank is fixedly installed with the evaporation furnace through the second pressurizing pipe, the middle part of the second pressurizing pipe is provided with a second pressurizing pump, and the filtering system is fixedly installed with the evaporation furnace.

[0020] The advantages of the present invention are: 1. The present invention takes into account multiple performance requirements such as high strength, high temperature resistance, easy processing, and aging resistance through reasonable formula design, and is particularly suitable for the production and use of rubber protective sleeves for automotive brake hoses under harsh conditions. The present invention not only solves the processing problem in the production process, but also significantly improves the comprehensive performance of the product, enabling it to remain stable and durable under the high-demand working conditions of automotive brake hoses.

[0021] 2. The rubber protective cover enters the salt bath vulcanization tank for salt bath vulcanization. The salt solution in the salt bath vulcanization tank is heated to above 300°C. The salt solution has good thermal conductivity, which can greatly shorten the vulcanization time of the rubber protective cover. The salt water has buoyancy, and the hollow rubber protective cover is not easy to soften due to heat and fall to the bottom of the salt bath vulcanization tank to cause deformation. After salt bath vulcanization, the rubber protective cover enters the water washing mechanism for surface cleaning to prevent the salt solution from remaining on the surface of the rubber protective cover and affecting the quality and appearance.

[0022] 3. After the salt bath vulcanization of the rubber protective sleeve, the salt solution enters the filtration system to filter out the impurities in the salt solution. The filtered salt solution enters the evaporator to evaporate the water in it. After its concentration reaches the requirement for the vulcanization of the rubber protective sleeve, it is pressed into the salt bath vulcanization tank by the pressure pump 2 to continue the salt bath vulcanization of the rubber protective sleeve. Therefore, the salt solution enters the front end and exits the rear end of the salt bath vulcanization tank, forming a flow cycle to ensure the quality of the salt solution and the vulcanization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the preparation process of the rubber protective cover of the present invention; Figure 2 The die head structure of the present invention is shown in FIG. Figure 1 ; Figure 3 The die head structure of the present invention is shown in FIG. Figure 2 ; Figure 4 It is a schematic diagram of the mold core structure of the present invention; Figure 5 The water washing mechanism structure of the present invention is shown in FIG. Figure 1 ; Figure 6 The water washing mechanism structure of the present invention is shown in FIG. Figure 2 ; Figure 7 The water washing mechanism structure of the present invention is shown in FIG. Figure 3 ; Figure 8 The water washing mechanism structure of the present invention is shown in FIG. Figure 4 ; Fig. 9 The water washing mechanism structure of the present invention is shown in FIG. Figure 5 ; Fig.10 The water washing mechanism structure of the present invention is shown in FIG. Figure 6 ; Fig.11 The water washing mechanism structure of the present invention is shown in FIG. Figure 7 ; Fig.12 The water washing mechanism structure of the present invention is shown in FIG. Figure 8 ; Fig.13The water washing mechanism structure of the present invention is shown in FIG. Figure 9 ; Description of the markings in the figure: 1. Internal mixer; 2. Extruder; 201. Die head body; 202. Threaded end; 203. Core body; 204. Oblique teeth; 205. Hexagonal nail hole; 206. Feed port; 207. Pressure plate; 208. Mouth die; 3. Conveyor belt 1; 4. Salt bath vulcanization tank; 5. Conveyor belt 2; 6. Water washing mechanism; 601. Water washing mechanism shell; 602. Hollow frame; 603. Spring 1; 604. Support rod; 605. Connecting pipe; 606. Motor 1; 607. Rotating wheel; 608. Push rod; 609. Bending rod; 610. Connecting rod; 611. Knocking rod; 612. Bracket; 613. Spring 2; 6 14. Slide plate; 615. Beating head; 616. Round washing rack; 617. Nozzle; 618. Water inlet pipe; 619. Slide; 620. Baffle; 621. Motor 2; 622. Rotating rod; 623. Small cylinder; 624. Air inlet housing; 625. Motor 3; 626. Gear 1; 627. Gear 2; 628. Ring wind wheel; 629. Air inlet pipe; 630. Air outlet pipe; 7. Cutter; 8. Return pipe 1; 9. Wastewater collection box; 10. Pressurized pipe 1; 11. Pressurized pump 1; 12. Return pipe 2; 13. Filtration system; 14. Evaporation furnace; 15. Pressurized pipe 2; 16. Pressurized pump 2. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] A preparation process of a rubber protective sleeve for an automobile brake hose comprises the following steps: S1. According to the formula of the raw materials of the automotive brake hose rubber protective cover in Table 1, the raw materials are added to the internal mixer 1 for mixing to form a rubber mixture; S2. The rubber mix is ​​fed into the cold feed extruder 2 and extruded into a rubber protective sleeve; S3. The rubber protective sleeve enters the salt bath vulcanization tank 4 through the conveyor belt 13 for salt bath vulcanization; the salt solution at the tail end of the salt bath vulcanization tank 4 enters the filter system 13 through the reflux pipe 12, and enters the evaporation furnace 14 after being filtered by the filter system 13; the salt solution in the evaporation furnace 14 is evaporated to a preset concentration, and then, under the pressure of the pressure pump 16, is pressed into the salt bath vulcanization tank 4 through the pressure pipe 15 to continue to vulcanize the rubber protective sleeve; S4. After the salt bath vulcanization, the rubber protective sleeve enters the water washing mechanism 6 through the conveyor belt 2 5 for surface cleaning; the cleaning water in the water washing mechanism 6 enters the wastewater collection tank 9 through the reflux pipe 8, and under the pressure of the pressure pump 11, the cleaning water is pressed into the filtration system 13 through the pressure pipe 10; S5. The cleaned rubber protective sleeve is cut into a preset length by a cutting machine 7.

[0027] Table 1 Formulas of rubber protective sleeves for automobile brake hoses in various embodiments and comparative examples (by weight) The protective cover prepared in Example 1 was subjected to performance testing, and the test results are shown in Table 2.

[0028] Table 2 Performance test results of the protective cover prepared in Example 1 It can be seen from the data in Table 2 that the material prepared by the present invention has good resilience, excellent weather resistance and excellent comprehensive performance. In the present invention, high-strength SBR1502 and high-temperature resistant SSBR2305 are selected and used together, so that the hose protective cover has sufficient tensile strength and elongation during assembly, and at the same time meets its high temperature resistance requirements during use. By using additives such as carbon black N550 and carbon black N330, it is beneficial to the efficient processing of the mixed rubber in the continuous extrusion vulcanization process, reducing production costs and improving production efficiency. The overall formula design has better comprehensive performance, low cost, and the finished product performance has excellent tension and resilience. These properties ensure that the product can quickly return to its original state after assembly expansion, hold the brake hose tightly, and do not slip. The addition of calcium oxide can maintain the appearance requirements of the extruded product. In the present invention, a compound accelerator is used, and the accelerator CBS provides a longer scorch time, which is beneficial to the stability during processing and extrusion; while the accelerator TT and the accelerator PZ accelerate the later vulcanization process to ensure that the product is quickly vulcanized. This balance is particularly important for products using a continuous vulcanization process, because it can improve the vulcanization speed and production efficiency while ensuring processing safety. The combination of multiple accelerators can also enable rubber products to exhibit excellent high temperature resistance in high temperature environments, ensuring that the hose rubber protective sleeve can withstand high temperatures for a long time without performance degradation in actual use. In the present invention, a composite antioxidant is used, and antioxidants RD and MB mainly provide static antioxidant protection, which is suitable for long-term storage and low dynamic load environments. Antioxidants 4010NA and 4020 can provide strong anti-aging protection under dynamic conditions, especially repeated mechanical stress (such as tension, compression or vibration). Through the combination of multiple antioxidants, the long-term anti-aging performance of the product in a static environment can be guaranteed, and effective anti-oxidation and anti-ozone protection can be provided during dynamic use, thereby extending the service life of the brake hose rubber protective sleeve. In addition, antioxidant RD can work in synergy with antioxidants 4010NA and 4020 to further improve the antioxidant and anti-ozone properties; while the combination of MB and RD can more effectively inhibit the high-temperature oxidation process of rubber. By rationally combining different types of antioxidants, better anti-aging effects can be achieved in a variety of harsh environments.

[0029] The performance test results of the protective covers prepared in Comparative Examples 1 to 5 are shown in Table 3.

[0030] Table 3 Performance test results of protective covers prepared in Comparative Examples 1 to 5 Embodiment 2 The preparation equipment of the rubber protective sleeve of the automobile brake hose used in the preparation process of Example 1 is as follows: Figure 1-13As shown. It is used to prepare a rubber protective cover for a brake hose of an automobile according to any one of the above-mentioned preparation processes for the rubber protective cover, comprising an internal mixer 1, the internal mixer 1 is installed at the feeding port of an extruder 2, the extruder 2 is fixedly installed with a salt bath vulcanization tank 4 through a conveyor belt 1 3, the salt bath vulcanization tank 4 is fixedly installed with a water washing mechanism 6 through a conveyor belt 2 5, and a cutting machine 7 is installed at the end of the water washing mechanism 6; The water washing mechanism 6 is fixedly installed with the wastewater collection box 9 through a reflux pipe 8, and the wastewater collection box 9 is fixedly installed with the filtering system 13 through a pressurizing pipe 10, and a pressurizing pump 11 is provided in the middle of the pressurizing pipe 10; The tail end of the salt bath vulcanization tank 4 is fixedly installed with the filter system 13 through the reflux pipe 12, and the front end of the salt bath vulcanization tank 4 is fixedly installed with the evaporation furnace 14 through the pressure pipe 15. The middle of the pressure pipe 15 is provided with a pressure pump 16, and the filter system 13 is fixedly installed with the evaporation furnace 14; The working principle of the above technical solution is as follows: the raw materials are added into the internal mixer 1 for mixing to form a rubber mix, the rubber mix is ​​fed into the extruder 2 from the feeding port of the extruder 2, and the rubber protective sleeve is extruded to form the rubber protective sleeve, the rubber protective sleeve enters the salt bath vulcanization tank 4 through the conveyor belt 1 3 for salt bath vulcanization, the rubber protective sleeve after salt bath vulcanization enters the water washing mechanism 6 through the conveyor belt 2 5 for surface cleaning, and the cleaned rubber protective sleeve is cut into a preset length by the cutting machine 7; The salt solution after the salt bath vulcanization of the rubber protective sleeve enters the filtering system 13 through the reflux pipe 12, and the impurities in the salt solution are filtered. The filtered salt solution enters the evaporating furnace 14 to evaporate the water therein so that its concentration reaches the requirement for vulcanization of the rubber protective sleeve, and the pressure pump 16 is started to press the evaporated salt solution into the salt bath vulcanization tank 4 through the pressure pipe 15 to continue to vulcanize the rubber protective sleeve in the salt bath. Therefore, the salt solution enters the front end and exits the rear end in the salt bath vulcanization tank 4, forming a flow cycle, maintaining the quality of the salt solution at all times, and ensuring the effect of vulcanization; The water washing mechanism 6 washes off the salt solution attached to the rubber protective sleeve to form cleaning water, and the cleaning water enters the wastewater collection box 9 through the return pipe 1 8. Because there is a certain amount of salt solution in the cleaning water, the cleaning water is pressed into the filtering system 13 by the pressure pump 1 11, and is mixed with the salt solution entering the filtering system 13 through the return pipe 2 12, and then enters the evaporation furnace 14 together after being filtered.

[0031] Embodiment 3 like Figure 1-13 As shown, the extruder 2 includes an extruder body and a die body 201, the die body 201 is installed at the end of the extruder body, a feed port 206 is provided on the side of the die body 201, a die core is connected to the die body 201 internally with a thread, a pressure plate 207 is connected to the end of the die body 201 with a thread, and the pressure plate 207 squeezes the die 208 between the pressure plate 207 and the die body 201; The mold core includes a threaded end 202, a mold core body 203, oblique teeth 204 and a hexagonal nail hole 205. The threaded end 202 is fixed to one end of the mold core body 203, the hexagonal nail hole 205 is provided at the other end of the mold core body 203, and eight groups of oblique teeth 204 are equidistantly arranged in a circumferential manner and fixed to the outer side of the mold core body 203. The water washing mechanism 6 comprises a water washing mechanism shell 601 and a hollow frame 602. Both ends of the hollow frame 602 are slidably connected to the water washing mechanism shell 601. A spring 603 is provided between the water washing mechanism shell 601 and the hollow frame 602. The rubber protective sleeve slides through the hollow frame 602. Four support rods 604 are fixed in the water washing mechanism shell 601. The four support rods 604 are all slidably connected to the circular water washing frame 616. The inner side of the circular water washing frame 616 is provided with Two rows of nozzles 617, a slide 619 is fixed on the side of the circular water washing frame 616, baffles 620 are fixed at both ends of the slide 619, the slide 619 and the baffle 620 are both slid on the side of the water washing mechanism housing 601, a long groove is provided at the lower end of the slide 619, a motor 2 621 is fixed on the side of the water washing mechanism housing 601, the output end of the motor 2 621 is connected to the rotating rod 622, a small cylinder 623 is fixed at the end of the rotating rod 622, and the small cylinder 623 is slidably fitted in the long groove; One end of the conveyor belt 2 5 is fixed to the end of the salt bath vulcanization tank 4, and the other end of the conveyor belt 2 5 is fixed to the end of the hollow frame 602; The working principle of the above technical solution is as follows: the mixed rubber heated in the extruder body is squeezed into the die head body 201 from the feed port 206 and is extruded between the die core and the die mouth 208. Since there are eight groups of oblique teeth 204 on the die body 203 of the die core, the extruded rubber protective sleeve has a circular shape, with an eight-flower mechanism at the center, and eight groups of axial oblique teeth and eight groups of axial grooves are evenly distributed in the inner hole of the rubber protective sleeve. By designing the grooves on the inner diameter of the protective sleeve, the cross-sectional shape of the protective sleeve is changed, and its axial compressive resistance is increased. In addition, the assembly liquid on the inner surface of the groove can contact the assembly fixture during the expansion of the protective sleeve, thereby reducing the friction coefficient between the protective sleeve and the assembly fixture, thereby achieving the purpose of reducing the friction during the assembly process, and ensuring the feasibility of the assembly process with the automobile brake hose. The pressing plate 207 is rotated and removed, and the die 208 can be removed for cleaning or replacement; Insert a hexagonal wrench into the hexagonal nail hole 205 and rotate the hexagonal wrench to rotate the threaded end 202 of the mold core and the die head body 201, so that the mold core can be removed for cleaning or replacement; The vulcanized in the salt bath vulcanization tank 4 enters the hollow frame 602 through the conveyor belt 2 5, and passes through the integral water washing mechanism 6 from the hollow frame 602, and the water inlet pipe 618 is connected to the water source. The middle part of the water inlet pipe 618 is a telescopic hose. The water source is started, and the water enters the circular water washing frame 616 from the water inlet pipe 618 and is sprayed out from the nozzle 617 to clean the surface of the rubber protective cover in the hollow frame 602. The hollow area of ​​the hollow frame 602 is large, and the nozzle 617 cleans the rubber protective cover in an annular manner, so there is no dead angle for cleaning, and the cleaning is more thorough; Start the second motor 621, drive the rotating rod 622 to rotate, drive the small cylinder 623 to slide in the long groove at the lower end of the slide 619, drive the slide 619 to slide back and forth on the side of the water washing mechanism housing 601, drive the circular water washing frame 616 to slide back and forth on the support rod 604, drive the nozzle 617 to slide back and forth following the circular water washing frame 616, and the nozzle 617 can reciprocate and clean the surface of the rubber protective cover multiple times, further improving the cleaning effect; The baffle 620 serves as a barrier to prevent the washing water in the washing mechanism housing 601 from splashing out.

[0032] Embodiment 4 like Figure 1-13 As shown, a vibration component is installed on the water washing mechanism housing 601, and the vibration component includes a motor 1 606, which is fixed to the upper end of the water washing mechanism housing 601, and the output shaft of the motor 1 606 is fixedly connected to the rotating wheel 607, and the rotating wheel 607 is fixedly connected to the lever 608. A bent rod 609 is rotatably connected to the output shaft of the motor 1 606, and the bent rod 609 is rotatably connected to the connecting rod 610, and the connecting rod 610 is hingedly connected to the knocking rod 611, and the knocking rod 611 slides in a bracket 612, and the bracket 612 is fixed on the inner top wall of the water washing mechanism housing 601, and a slide plate 614 is slidably connected in the bracket 612, and the slide plate 614 is fixedly connected to the knocking rod 611, and a spring 2 613 is provided between the slide plate 614 and the inner top wall of the bracket 612, and a knocking head 615 is fixed to the end of the knocking rod 611, and the knocking head 615 can knock on the hollow frame 602; The water-washing mechanism housing 601 is provided with a water stain blowing device, which includes an air inlet housing 624, which is fixed on the support rod 604, one side of the air inlet housing 624 is connected with an air inlet pipe 629, and the other side of the air inlet housing 624 is provided with an air outlet pipe 630, the air outlet of the air outlet pipe 630 faces the hollow frame 602, and an annular wind wheel 628 is rotatably connected in the air inlet housing 624, and a gear 2 627 is provided on the outer side of the annular wind wheel 628, and the gear 2 627 is meshed with the gear 1 626 for transmission, and the gear 1 626 is connected to the output end of the motor 3 625, and the motor 3 625 is fixed on the outer wall of the water-washing mechanism housing 601, and the air inlet pipe 629 is connected with the connecting pipe 605 fixed on the water-washing mechanism housing 601; An annular baffle is provided between the circular water washing frame 616 and the air inlet housing 624, and the annular baffle is fixed on the hollow frame 602; The working principle of the above technical solution is as follows: start the motor 1 606, drive the rotating wheel 607 to rotate, drive the lever 608 to follow the rotating wheel 607 to rotate, when the lever 608 rotates, it is clamped on the bent rod 609, drive the bent rod 609 to rotate on the rotating wheel 607, the front end of the bent rod 609 rotates upward, drive the connecting rod 610 to move upward, drive the knocking rod 611 and the slide plate 614 to slide upward in the bracket 612, drive the spring 2 613 to be compressed, drive the knocking head 615 to move upward with the knocking rod 611, when the bent rod 609 passes the highest point, the bent rod 609 loses the limit of the lever 608, under the action of the restoring elastic force of the spring 2 613, the bent rod 609 quickly rotates downward, drive the connecting rod 61 0 moves down rapidly, driving the knocking rod 611 and the slide plate 614 to slide down rapidly in the bracket 612, driving the knocking head 615 to descend rapidly and knock on the hollow frame 602, driving the hollow frame 602 to vibrate. Since both ends of the hollow frame 602 are slidably connected in the water washing mechanism shell 601, and a spring 603 is provided between the water washing mechanism shell 601 and the hollow frame 602, the vibration amplitude of the hollow frame 602 is increased, and then the vibration amplitude of the rubber protective cover is increased. The function is to vibrate off most of the salt solution attached to the rubber protective cover before water washing, reduce the pressure of the subsequent water washing, and vibrate off the water drops on the rubber protective cover during the vibration at the rear end of the water washing, reduce the pressure of the water stain blowing device at the rear; Start motor three 625, drive gear one 626 to rotate, drive the annular wind wheel 628 with gear two 627 to rotate, the external wind passes through the connecting pipe 605, and then enters the air inlet shell 624 through the air inlet pipe 629. Under the action of the rapid rotation of the annular wind wheel 628, the wind is blown out from the air outlet pipe 630, and the air outlet pipe 630 is circularly oriented toward the hollow frame 602, thereby blowing away the water stains on the rubber protective cover in the hollow frame 602. The circular blowing can blow away the water stains without dead angles, and the effect of removing the water stains is better.

[0033] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A formula for a rubber protective sleeve for an automobile brake hose, characterized in that: The formula of the rubber protective cover of the automobile brake hose includes the following components by weight: SBR1502: 50 parts, SSBR2305: 50 parts, zinc oxide: 4-6 parts, stearic acid SA1840: 1-2 parts, vulcanizing agent S-80: 0.1-1 parts, accelerator 1.5-5 parts, carbon black N550: 40-50 parts, carbon black N330: 10-25 parts, clay: 10-20 parts, talcum powder: 5-15 parts, aromatic oil: 3-8 parts, antioxidant 2-8 parts, high styrene: 2-5 parts.

2. The formula of the automotive brake hose rubber protective cover according to claim 1 is characterized in that: The accelerator is compounded by accelerator CBS, accelerator TT and accelerator PZ, and the mass ratio is (1-2): (0.5-1.5): (0.1-1).

3. The formula of the automotive brake hose rubber protective cover according to claim 1 is characterized in that: The antioxidant is compounded by antioxidant RD, antioxidant MB, antioxidant 4010NA and antioxidant 4020 in a mass ratio of 1:1:1:

1.

4. The formula of the automotive brake hose rubber protective cover according to claim 1 is characterized in that: The formula of the rubber protective cover of the automobile brake hose includes the following components by weight: SBR1502: 50 parts, SSBR2305: 50 parts, zinc oxide: 5 parts, stearic acid SA1840: 1.5 parts, vulcanizing agent S-80: 0.5 parts, accelerator CBS: 1.5 parts, accelerator TT: 1 part, accelerator PZ: 0.5 parts, carbon black N550: 45 parts, carbon black N330: 20 parts, clay: 15 parts, talcum powder: 10 parts, aromatic oil: 5 parts, antioxidant RD: 1 part, antioxidant MB: 1 part, antioxidant 4010NA: 1 part, antioxidant 4020: 1 part, and high styrene: 3 parts.

5. A process for preparing a rubber protective cover for an automobile brake hose as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Add the raw materials into an internal mixer (1) and mix them to form a rubber mixture; S2. The rubber mix is ​​fed into a cold feed extruder (2) and extruded into a rubber protective sleeve; S3. The rubber protective sleeve enters the salt bath vulcanization tank (4) through a conveyor belt (3) for salt bath vulcanization; S4. The rubber protective cover after salt bath vulcanization enters the water washing mechanism (6) through the conveyor belt 2 (5) for surface cleaning; S5. The cleaned rubber protective sleeve is cut into a preset length by a cutting machine (7).

6. The process for preparing a rubber protective cover for an automobile brake hose according to claim 5, characterized in that: In step S3, the salt solution at the tail end of the salt bath vulcanization tank (4) enters the filtering system (13) through the reflux pipe (12), and enters the evaporation furnace (14) after being filtered through the filtration system (13); after the salt solution in the evaporation furnace (14) is evaporated to a concentration reaching a preset value, it is pressed into the salt bath vulcanization tank (4) through the pressure pipe (15) under the pressure of the pressure pump (16) to continue to perform salt bath vulcanization on the rubber protective sleeve.

7. The process for preparing a rubber protective cover for an automobile brake hose according to claim 5, characterized in that: In step S4, the cleaning water in the water washing mechanism (6) enters the wastewater collection tank (9) through the return pipe (8), and under the pressure of the pressure pump (11), the cleaning water is pressed into the filtering system (13) through the pressure pipe (10).

8. A preparation device for a rubber protective cover of an automobile brake hose, used for preparing a rubber protective cover according to the preparation process for a rubber protective cover of an automobile brake hose according to any one of claims 5 to 7, characterized in that: The invention comprises an internal mixer (1), wherein the internal mixer (1) is installed at the feeding port of an extruder (2), the extruder (2) is fixedly installed with a salt bath vulcanization tank (4) via a first conveyor belt (3), the salt bath vulcanization tank (4) is fixedly installed with a water washing mechanism (6) via a second conveyor belt (5), and a cutting machine (7) is installed at the end of the water washing mechanism (6).

9. The equipment for preparing the rubber protective cover of the automobile brake hose according to claim 8, characterized in that: The water washing mechanism (6) is fixedly mounted on the wastewater collection box (9) via a return pipe (8); the wastewater collection box (9) is fixedly mounted on the filtering system (13) via a pressurizing pipe (10); a pressurizing pump (11) is provided in the middle of the pressurizing pipe (10).

10. The equipment for preparing the rubber protective cover of the automobile brake hose according to claim 9, characterized in that: The tail end of the salt bath vulcanization tank (4) is fixedly installed with the filter system (13) through the second reflux pipe (12), and the front end of the salt bath vulcanization tank (4) is fixedly installed with the evaporation furnace (14) through the second pressure pipe (15). The middle part of the second pressure pipe (15) is provided with a second pressure pump (16), and the filter system (13) is fixedly installed with the evaporation furnace (14).

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