Device for solving rubber leakage of feeding roller of rubber extruder

Abstract

The utility model discloses a device for solving rubber leakage of a feeding roller of a rubber extruder, which comprises a support part, a screw rod, a screw rod gear, a feeding roller and a rubber scraping part, one end of the screw rod is fixedly connected with a screw rod gear, the feeding roller is rotatably connected onto the support part, one end of the feeding roller is fixedly connected with a feeding roller gear, the feeding roller gear is meshed with the screw rod gear, and the rubber scraping part is fixedly connected with the screw rod gear. The rubber scraping part is arranged at the position, close to the peripheral surface of the feeding roller, of the supporting part and used for removing rubber materials overflowing in the rubber scraping process, and the rubber guiding part is arranged on the supporting part and used for collecting the removed rubber materials. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder ensures that a rubber material does not invade into a bearing and gear operation area of equipment, avoids faults such as bearing damage or gear tooth breakage caused by invasion of the rubber material, prolongs the service life of the equipment, and reduces the production downtime.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber processing technical field, concretely relates to a device that solves rubber extruder feeding roll glue leakage. BACKGROUND

[0002] In the field of rubber product production, extruders are important processing equipment and are widely used for mixing and extruding rubber. As one of the key components of the extruder, the feeding roll's role is to uniformly and continuously transport the rubber material into the screw, thereby ensuring the stability and efficiency of the extrusion process. However, the design of the feeding roll in the prior art has certain defects, which seriously affects the performance and production efficiency of the equipment.

[0003] During use, due to the unreasonable design structure, most of the rubber material is extruded forward along the screw under the pushing of the feeding roll, but part of the rubber material still overflows along the two ends of the feeding roll, causing the problem of glue leakage. This phenomenon not only wastes production materials and increases the production cost of enterprises, but also may pollute the environment around the equipment and increase the difficulty of cleaning work. In addition, the overflow of rubber material may have a negative impact on the transmission components of the feeding roll, leading to equipment failure. For example, the rubber material may invade the running area of the bearing and transmission gear, accelerating the wear of the components and causing serious problems such as bearing damage or gear tooth breakage, resulting in equipment downtime and affecting normal production. In addition, the material of the existing feeding roll usually does not have good wear resistance. In the long-term production process, the surface of the feeding roll is prone to wear due to the friction of the rubber material, which further aggravates the leakage problem of the rubber material and shortens the service life of the equipment. The above problems reflect the deficiencies of the existing rubber extruder feeding roll in design and material selection, and improvement is urgently needed to improve the reliability and production efficiency of the equipment. SUMMARY

[0004] The utility model aims at providing a device that solves the problem of rubber extruder feeding roll glue leakage, optimizes the structural design of the feeding roll, and reduces the overflow of rubber material.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a device that solves the problem of rubber extruder feeding roll glue leakage, comprising:

[0006] a support part;

[0007] a screw, one end of the screw being fixedly connected with a screw gear;

[0008] a feeding roll, the feeding roll being rotatably connected to the support part, one end of the feeding roll being fixedly connected with a feeding roll gear, and the feeding roll gear being engaged with the screw gear;

[0009] a rubber scraping part, the rubber scraping part being arranged on the support part close to the outer peripheral surface of the feeding roll, and the rubber scraping part being used for removing the rubber material that overflows during the rubber scraping process;

[0010] The glue guiding part is arranged on the supporting part, and is used for collecting the removed rubber material.

[0011] Preferably, the supporting part comprises a fixed wall plate, one side of the fixed wall plate is sequentially fixedly connected with a water head supporting seat, a right-handed glue scraping knife seat, a left-handed glue scraping knife seat and a gear supporting seat.

[0012] Preferably, the feeding roller is embedded in the water head supporting seat, the right-handed glue scraping knife seat, the left-handed glue scraping knife seat and the gear supporting seat, and the feeding roller is rotationally connected in the water head supporting seat, the right-handed glue scraping knife seat, the left-handed glue scraping knife seat and the gear supporting seat.

[0013] Preferably, the glue scraping part comprises a circumferential roller surface scraping knife, and the circumferential roller surface scraping knife is fixedly connected with one side of the right-handed glue scraping knife seat and the left-handed glue scraping knife seat.

[0014] Preferably, the fixed wall plate is boltedly connected with a pull knife plate, the pull knife plate is fixedly connected with a knife seat, and the knife seat is boltedly connected with the circumferential roller surface scraping knife.

[0015] Preferably, the glue guiding part comprises a glue returning knife cover, and the glue returning knife cover is fixedly bolted on the fixed wall plate.

[0016] Preferably, a gap between the glue returning knife cover and the feeding roller is less than 0.2 mm.

[0017] Preferably, the feeding roller is provided with axial spiral glue scraping knives at two ends, the spiral angles of the axial spiral glue scraping knives are 30±5°, and 18 to 22 spiral glue scraping blades are arranged at each end.

[0018] Preferably, a transmission ratio between the screw gear and the feeding roller gear is 1.05-1.15.

[0019] Preferably, the circumferential roller surface scraping knife is made of wear-resistant alloy steel material.

[0020] According to the above technical solution, the present application has the following beneficial effects:

[0021] The device for solving the rubber extruder feeding roller glue leakage, by setting the glue scraping part on the outer peripheral surface of the feeding roller, effectively removes the overflowing glue; and by guiding the removed glue to flow back to the screw path through the glue guiding part, avoids the waste of the glue and the pollution of the production environment, significantly improves the glue leakage prevention performance, sets the axial spiral glue scraping knife at both ends of the feeding roller, adopts the spiral angle design of 30±5° and 18 to 22 spiral blades, effectively guides the glue moving to the end back to the working surface of the feeding roller, eliminates the end glue leakage problem, optimizes the transmission ratio between the screw gear and the feeding roller gear to 1.05-1.15, ensures that the glue is dense and uniform in the extrusion process, avoids the air hole problem caused by improper speed matching, further improves the finished product quality of the rubber product, the circumferential roller surface glue scraping knife and the axial spiral glue scraping knife are both made of wear-resistant alloy steel material, which greatly improves the durability of the device, reduces the frequent maintenance and replacement caused by component wear, the structure design of the glue guiding part and the glue returning knife cover ensures that the glue cannot invade the bearing and gear running area of the equipment, avoids the bearing damage or gear tooth breakage caused by glue invasion, prolongs the service life of the equipment, reduces the production downtime, the support part is designed in the form of a fixed wall plate and multiple components, which makes the installation of the feeding roller, the glue scraping part and the glue guiding part more stable, and the adjustable structure makes the device adapt to different specifications of rubber materials, simplifies the equipment debugging and maintenance process. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure plane schematic view of the utility model;

[0023] Figure 2 It is a whole structure part schematic view of the utility model;

[0024] Figure 3 It is a whole structure cross section schematic view of the utility model;

[0025] Figure 4 It is an axial spiral glue scraping knife schematic view of the utility model.

[0026] In the drawing: 1, support part; 11, fixed wall plate; 12, water head support seat; 13, right-handed glue scraping knife seat; 14, left-handed glue scraping knife seat; 15, gear support seat; 2, screw; 3, screw gear; 4, feeding roller; 5, feeding roller gear; 6, glue scraping part; 61, circumferential roller surface glue scraping knife; 7, glue guiding part; 71, glue returning knife cover; 8, broach plate; 9, knife seat; 10, axial spiral glue scraping knife. DETAILED DESCRIPTION

[0027] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of protection of the utility model.

[0028] As shown in Figures 1-4 A device for solving the rubber extruder feeding roller glue leakage, including support part 1, screw 2, feeding roller 4, glue scraping part 6 and glue guiding part 7. Support part 1 is used to support and fix the parts of the device. One end of screw 2 is fixedly connected with screw gear 3, which drives feeding roller 4 to rotate by meshing with feeding roller gear 5. The outer peripheral surface of feeding roller 4 is close to glue scraping part 6, which is used to remove the overflowing rubber material, and glue scraping part 6 is installed on support part 1. The removed rubber material is collected by glue guiding part 7, and glue guiding part 7 is also installed on support part 1.

[0029] In the rubber extrusion process, feeding roller 4 is driven by screw 2, and precise synchronous rotation is realized by the meshing of screw gear 3 and feeding roller gear 5, so as to prevent material from stagnating or accumulating. Glue scraping part 6 removes the overflowing rubber on the outer peripheral surface of feeding roller 4 to avoid the influence of residual material on the subsequent process. Glue guiding part 7 further collects the rubber material cleaned by glue scraping part 6, effectively preventing waste. The device ensures the stable and efficient rotation of feeding roller 4 through the precisely designed gear transmission structure, and solves the problem of rubber extruder glue leakage. The cooperation of glue scraping part 6 and glue guiding part 7 can keep the equipment clean, recycle materials, reduce waste and improve production efficiency.

[0030] The meshing mode of screw gear 3 and feeding roller gear 5 can adopt different gear modulus to adapt to different load requirements. The design of glue scraping part 6 can select different shapes of glue scraping blades according to different rubber materials, such as round or flat blades. The shape and collection mode of glue guiding part 7 can be adjusted, such as increasing glue guiding groove or setting automatic recycling mechanism to improve efficiency.

[0031] Support part 1 includes fixed wall plate 11. Fixed wall plate 11 is fixedly connected with water head supporting seat 12, right-hand scraping blade seat 13, left-hand scraping blade seat 14 and gear supporting seat 15 in sequence on one side. Fixed wall plate 11 provides a stable support base for feeding roller 4 and other components. The sequential arrangement of water head supporting seat 12, right-hand scraping blade seat 13, left-hand scraping blade seat 14 and gear supporting seat 15 enables feeding roller 4 to rotate stably, while ensuring the accurate scraping angle of the scraping blade and improving the scraping efficiency. The support structure ensures the rigidity and stability of the equipment through the combination of fixed wall plate 11 and multiple supporting seats, significantly improves the reliability of the equipment operation, and is convenient for disassembly, assembly and maintenance.

[0032] The support part 1 can be made of aluminum alloy or stainless steel material to reduce weight or improve corrosion resistance, and the arrangement of the support seat can be adjusted according to actual needs, for example, auxiliary support seats are added to improve the load capacity.

[0033] The feeding roller 4 is embedded in the water head support seat 12, the right-handed scraping knife seat 13, the left-handed scraping knife seat 14 and the gear support seat 15, and is rotationally connected in the above-mentioned components. The feeding roller 4 realizes stable rotary motion through multi-point support. Each support seat provides accurate positioning and good rotary conditions for the feeding roller 4, effectively avoids deviation and vibration, and ensures the stability of the material conveying and scraping process. The design of multiple support points enhances the stability of the feeding roller 4 and improves the operation accuracy and service life of the device.

[0034] The material of the support seat can be replaced with special materials that are resistant to high temperature or corrosion according to the actual application environment, and a lubrication system can be added inside the support seat to further reduce friction and prolong the service life of the feeding roller 4.

[0035] The scraping part 6 includes a circumferential roller surface scraping knife 61 fixedly connected to one side of the right-handed scraping knife seat 13 and the left-handed scraping knife seat 14. The circumferential roller surface scraping knife 61 is fixed on the right-handed scraping knife seat 13 and the left-handed scraping knife seat 14, tightly adheres to the surface of the feeding roller 4, and removes the overflowed rubber material on the outer circumferential surface of the feeding roller 4 in real time when the feeding roller 4 rotates. The right-handed scraping knife seat 13 and the left-handed scraping knife seat 14 provide support and angle fixation for the scraping knife, ensuring uniform scraping force and improving scraping effect. This design makes the scraping process efficient and stable, effectively cleans the overflowed rubber material, avoids pollution to other parts of the equipment, and prolongs the maintenance period of the equipment.

[0036] The shape of the cutting edge of the circumferential roller surface scraping knife 61 can be adjusted according to the viscosity and hardness of the rubber material, such as designed as a zigzag or arc-shaped cutting edge to adapt to different working conditions. The installation method of the scraping knife 61 can adopt movable connection, which is convenient for quick disassembly, replacement and maintenance.

[0037] The drawknife plate 8 is connected to the fixed wall plate 11 by bolts, the drawknife plate 8 is fixedly connected with the knife seat 9, and the knife seat 9 is connected with the circumferential roller surface scraping knife 61 by bolts. The drawknife plate 8 provides a stable mounting position for the knife seat 9, and the bolt connection ensures the accurate and firm positioning of the knife seat 9. The circumferential roller surface scraping knife 61 is installed on the knife seat 9, which further ensures that the cutting tool will not loosen or deviate during scraping, and improves the stability of the scraping effect. This design enhances the stability of the installation of the scraping knife, reduces the influence of vibration on the scraping process. At the same time, the bolt connection design facilitates the maintenance and replacement of the cutting tool, and reduces the maintenance cost.

[0038] The material of the knife seat 9 can be a high-strength lightweight alloy to reduce the overall weight of the equipment. The connection between the knife seat 9 and the scraping knife 61 can be changed to a buckle type or a magnetic type to achieve faster installation and disassembly.

[0039] The glue guiding part 7 includes a glue returning knife cover 71, which is fixed on the fixed wall plate 11 by bolts. The glue returning knife cover 71 is tightly installed on the fixed wall plate 11, surrounding the lower area of the glue scraping part 6, forming a closed or semi-closed space. The removed rubber material is guided and collected by the glue returning knife cover 71, avoiding overflow and ensuring the cleanliness of the entire glue scraping and guiding process. This design effectively controls the flow direction of the removed rubber material, reduces secondary pollution, facilitates subsequent processing or recycling, and improves the cleanliness of the production site.

[0040] The glue returning knife cover 71 can be made of transparent material, which is convenient for real-time observation of the collection of rubber material. The glue guiding method can be further improved by using a hose to guide out or connect to an automatic recycling system, realizing automatic operation.

[0041] The gap between the glue returning knife cover 71 and the feeding roller 4 is less than 0.2 mm. The gap design of less than 0.2 mm ensures that the glue returning knife cover 71 tightly matches the feeding roller 4, avoiding overflow of rubber material during scraping, while reducing material leakage caused by the gap of the glue returning knife cover 71. Precise control of the gap can also avoid direct contact between the knife cover and the feeding roller 4, which can cause wear. The optimized design of the gap effectively improves the accuracy of glue guiding, avoids rubber overflow, reduces material waste, and reduces the maintenance frequency and cost of the equipment.

[0042] The gap between the glue returning knife cover 71 and the feeding roller 4 can be adjusted according to different rubber materials and equipment operating conditions, such as adjusting to 0.1 mm to adapt to low viscosity rubber, and adding a wear-resistant coating to the inner surface of the knife cover to further improve its service life.

[0043] The feeding roller 4 is provided with an axial spiral scraping knife 10 at both ends. The spiral scraping knife 10 has a spiral angle of 30±5°, and 18 to 22 spiral scraping blades are arranged at each end. The axial spiral scraping knife 10 can uniformly and efficiently clean the surface of the feeding roller 4 through its 30±5° spiral angle design, and push the removed rubber material to the glue guiding part 7, reducing the residence time of residual material in the equipment. 18 to 22 scraping blades ensure wide scraping coverage and uniform scraping effect. This design further improves the scraping efficiency, optimizes the cleaning effect, and reduces the problem of equipment jam caused by rubber material accumulation.

[0044] The spiral angle can be adjusted to 25° to 35° according to actual needs to adapt to the flow characteristics of different rubber materials. The number and material of the scraping blades can be adjusted according to equipment needs, such as using ceramic blades to enhance wear resistance.

[0045] The transmission ratio between the screw gear 3 and the feeding roller gear 5 is set to 1.05-1.15. The design of the transmission ratio makes the screw 2 and the feeding roller 4 maintain a proper rotational speed difference, ensuring that the feeding roller 4 can fully extrude and transport the material while reducing rubber overflow. The optimized design of the transmission ratio improves the material transportation efficiency while effectively avoiding the problem of rubber leakage, further improving the overall performance of the equipment.

[0046] The transmission ratio can be adjusted to 1.1-1.2 according to different working requirements to adapt to higher transportation speed. The gear design can be changed to synchronous belt transmission to reduce noise and improve transmission stability.

[0047] The circumferential roller surface scraping knife 61 is made of wear-resistant alloy steel material. The wear-resistant alloy steel material has high hardness and corrosion resistance, which can maintain the sharpness and durability of the blade when scraping rubber material, thereby prolonging the service life. The scraping knife 61 made of wear-resistant alloy steel has a long service life, reduces the replacement frequency, reduces the maintenance cost, and improves the stability and scraping efficiency of the equipment.

[0048] The scraping knife material can be selected as high-hardness ceramic or composite material to further enhance the wear resistance. The scraping knife surface can be coated with a non-stick coating to avoid rubber adhesion and improve the scraping effect.

[0049] In order to achieve the speed ratio requirement of the feeding roller 4 surface and the screw 2, through repeated experiments, it is confirmed that the speed ratio of the feeding roller 4 and the screw 2 is 1.05-1.15, which is the best. The extruded rubber is uniform, dense and without air holes, and the quality is the best. In order to achieve the best speed ratio, the design value is as follows:

[0050] Set the screw 2 speed as V1, the screw 2 diameter as φA0, the screw gear 3 tooth number as Z1, in addition, set the feeding roller 4 speed as V2, the feeding roller 4 diameter as φB0, the feeding roller 4 gear tooth number as Z2, and the center distance between the screw 2 and the feeding roller 4 as L0. Through the above parameters, it is found that the diameter φA0 of the screw 2 and the tooth number Z1 of the screw gear 3 are a constant value. When V1:V1=1.05-1.15 is required, L0, Z2, and φB0 parameters can be flexibly adjusted to achieve the best speed.

[0051] The feeding roller 4 is designed as a spiral blade structure (18 on each end) at both ends. The rubber moves to the axial spiral scraping knife 10 at one end, but as the feeding roller rotates, the rubber returns to the feeding roller 4 surface from the axial spiral scraping knife 10 at the other end.

[0052] The speed of the two ends of the feeding roller 4 is V1, V3, and the surface speed of the feeding roller 4 is V2. In order to reduce the movement of the rubber, v1=v3>v2 is designed. The helix angle of the blade of the axial helical rubber scraping device 10 is designed as β. The height of the blade is h0, v1=v3=v2+h0, and in use, it is proved through multiple tests that h0 is 5mm to obtain the best anti-rubber effect, and the helix angle of the blade is designed as 30±5°, which is the best effect.

[0053] By designing the height h0 of the helical rubber scraping blade, the speed difference of the feeding roller 4 is formed, and the risk of rubber leakage to both ends is reduced. By designing the helix angle of the blade of the axial helical rubber scraping device at both ends and the number of axial helical blades, each end is 18-22, the ability of the helical blade to return the rubber is increased, and the possibility of rubber leakage is eliminated.

[0054] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for solving the problem of rubber leakage from a feeding roll of a rubber extruder, characterized in that, Include: Support (1); Screw rod (2), one end of the screw rod (2) is fixedly connected with screw rod gear (3); Feeding roller (4), the feeding roller (4) is rotatably connected on the support (1), one end of the feeding roller (4) is fixedly connected with feeding roller gear (5), and the feeding roller gear (5) is engaged with the screw rod gear (3); Glue scraping part (6), the glue scraping part (6) is arranged on the support (1) close to the outer peripheral surface of the feeding roller (4), and the glue scraping part (6) is used for removing the rubber material overflowing in the glue scraping process; Glue guide part (7), the glue guide part (7) is arranged on the support (1), and the glue guide part (7) is used for collecting the removed rubber material.

2. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 1, characterized in that: The support (1) comprises a fixed wall plate (11), one side of the fixed wall plate (11) is sequentially fixedly connected with a water head supporting seat (12), a right-handed glue scraping knife seat (13), a left-handed glue scraping knife seat (14) and a gear supporting seat (15).

3. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 2, characterized in that: The feeding roller (4) is embedded in the water head supporting seat (12), the right-handed glue scraping knife seat (13), the left-handed glue scraping knife seat (14) and the gear supporting seat (15), and the feeding roller (4) is rotatably connected in the water head supporting seat (12), the right-handed glue scraping knife seat (13), the left-handed glue scraping knife seat (14) and the gear supporting seat (15).

4. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 2, characterized in that: The glue scraping part (6) comprises a circumferential roller surface scraping knife (61), and the circumferential roller surface scraping knife (61) is fixedly connected with one side of the right-handed glue scraping knife seat (13) and the left-handed glue scraping knife seat (14).

5. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 4, characterized in that: The fixed wall plate (11) is bolted with a pull knife plate (8), the pull knife plate (8) is fixedly connected with a knife seat (9), and the knife seat (9) is bolted with the circumferential roller surface scraping knife (61).

6. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 2, characterized in that: The glue guide part (7) comprises a glue returning knife cover (71), and the glue returning knife cover (71) is fixed on the fixed wall plate (11) by bolts.

7. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 6, characterized in that: The gap between the glue returning knife cover (71) and the feeding roller (4) is less than 0.2mm.

8. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 1, characterized in that: Both ends of the feeding roller (4) are provided with axial spiral scraping knives (10), the helix angle of the axial spiral scraping knives (10) is 30±5°, and 18 to 22 spiral scraping knife pieces are arranged at each end.

9. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 1, characterized in that: The transmission ratio between the screw rod gear (3) and the feeding roller gear (5) is 1.05-1.

15.

10. The device for solving the problem of rubber leakage of the feeding roller of the rubber extruder according to claim 4, characterized in that: The circumferential roller surface scraping knife (61) is made of wear-resistant alloy steel material.

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