Rubber mixing mill for processing fluoroelastomers

Abstract

The utility model discloses a kind of rubber processing with rubber mixing mill, including base and two groups of support box being vertically arranged on base, two groups of the opposite side wall of support box are rotatably provided with two groups of roller, one group of the support box is provided with the driving assembly for driving two groups of roller relative rotation, the top of two groups of the support box is also provided with top plate and is integrated with the auxiliary mixing assembly for automatic cutting, recycling mixing material on top plate, and for accurate addition of color material feeding assembly;The opposite side wall of support box is provided with sliding slot, the auxiliary mixing assembly includes lifting plate slidingly arranged in two groups of sliding slot at both ends, the lifting plate bottom is provided with storage box and the bottom opening of box body. The utility model relates to rubber mixing equipment technical field, specifically provides a kind of rubber processing with rubber mixing mill.

Description

Technical Field

[0001] This utility model relates to the field of rubber mixing equipment technology, specifically a rubber mixing machine for fluororubber processing. Background Technology

[0002] Rubber mixing mills are mainly used to uniformly mix raw rubber with various compounding agents such as vulcanizing agents, reinforcing agents, and fillers to produce rubber compounds that meet the requirements of subsequent processing. Open-type rubber mixing mills are a common type of fluororubber processing mill. They use two opposing rotating rollers to crush and shear the rubber compound. The compound is fed in from above, and after mixing, it exits from below the two sets of rollers. It needs to be manually cut, rolled up, and then fed back between the rollers. This continuous operation achieves the mixing process.

[0003] Because the mixed materials need to be repeatedly turned over to ensure uniformity, it is usually necessary to manually cut the mixed materials on the rollers with a knife, and then put the materials back into the rollers for repeated mixing. This operation requires frequent manual intervention, which is not only labor-intensive, but also prone to fluctuations in the uniformity of the mixed materials due to inconsistent timing and force of manual cutting. At the same time, the addition of colorants is mostly done manually at timed intervals, and it is difficult to accurately control the interval between two additions. Too short an interval can lead to excessive colorants in some areas, while too long an interval will affect the mixing efficiency. Utility Model Content

[0004] The technical problem this invention aims to solve is that the mixing process requires frequent manual cutting and repeated mixing of materials, which is labor-intensive. In addition, colorants are mostly added manually, making it difficult to control the interval time. Frequent addition affects the uniformity of color, while slow addition affects the mixing efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: The present invention proposes a rubber mixing machine for fluororubber processing, including a base and two sets of support boxes vertically arranged on the base. Two sets of rollers are rotatably arranged on the opposite side walls of the two sets of support boxes. A driving component for driving the two sets of rollers to rotate relative to each other is arranged in one set of support boxes. A top plate is also provided on the top of the two sets of support boxes, and an auxiliary mixing component for automatically cutting and recycling the mixing materials and a feeding component for accurately adding colorants are integrated on the top plate.

[0006] The support box has grooves on opposite side walls. The auxiliary mixing assembly includes a lifting plate that is slidably disposed in two sets of grooves at both ends. A storage box is disposed at the bottom of the lifting plate and the bottom of the box is open. An electric telescopic rod is disposed on the top plate and the free end of the electric telescopic rod is connected to the lifting plate to drive lifting. A cutting blade with the blade facing downward is disposed on one side of the bottom wall of the storage box and a limiting plate is slidably disposed on the other side through the side wall. An electric telescopic rod is disposed on the outer wall of the storage box and is connected to the limiting plate at its free end by a transmission block. A guide roller is also rotatably disposed on the box body on the side of the cutting blade.

[0007] Preferred technical solution 1: A tamping column is provided on the top plate, and the lower end of the tamping column passes through the lifting plate and the storage box and extends into the interior of the storage box.

[0008] Preferred technical solution 2: The feeding assembly includes a feeding hopper set on the top plate, a discharge pipe set at the bottom of the feeding hopper, the bottom of the discharge pipe extending through the top plate and above the two sets of rollers, a stirring shaft rotating on the inner top wall of the feeding hopper, a stirring motor set at the top of the feeding hopper, and the motor power output shaft connected to the stirring shaft, a stirring rod set on the stirring shaft, and a spiral feeding blade set on the part of the stirring shaft located inside the discharge pipe.

[0009] Preferred technical solution 3: The two sets of rollers are each fixed with a drive shaft by a key at one end of the support box on the same side. The two sets of drive shafts are each fitted with gears by a key at one end of the support box, and the two sets of gears mesh with each other. The outer wall of the support box is fixed with a protective box body by bolts. The outer wall of the protective box body is fixed with a drive motor by a motor bracket. The power output shaft of the drive motor is connected to a set of drive shafts.

[0010] Preferred technical solution four: A controller is also provided on the side wall of the support box, and the stirring motor, drive motor, electric telescopic rod one and electric telescopic rod two are all electrically connected to the controller.

[0011] Preferred technical solution five: The feeding hopper has a conical structure; the discharge pipe has a cylindrical structure.

[0012] The present invention discloses a rubber mixing machine for fluororubber processing, and the beneficial effects achieved by adopting the above structure are as follows:

[0013] (1) The auxiliary mixing component automatically cuts the mixing material with a cutter, temporarily stores it in a storage box, prevents adhesion with a tamping column, and controls the falling with a limiting plate, so as to realize the automatic repeated mixing of the material. There is no need for frequent manual cutting and feeding, which reduces labor intensity. Moreover, the cutting timing and force are consistent, and the mixing uniformity is improved.

[0014] (2) The feeding component breaks up the clumping of pigments by stirring the rod, and the spiral feeding blades work in conjunction with the stirring motor to control the number of revolutions, thereby reducing the error in the amount of pigment added and the error in the time interval between additions, effectively ensuring the uniformity of color, and avoiding the efficiency loss caused by manual addition. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1This utility model provides a schematic diagram of the overall structure of a rubber mixing mill for fluororubber processing. Figure 1 ;

[0017] Figure 2 This utility model provides a schematic diagram of the overall structure of a rubber mixing mill for fluororubber processing. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of an auxiliary mixing component for a rubber mixing mill for fluororubber processing proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the feeding component of a rubber mixing machine for fluororubber processing proposed in this utility model.

[0020] The components are as follows: 1. Base, 2. Support box, 3. Roller, 4. Top plate, 5. Lifting plate, 6. Storage box, 7. Electric telescopic rod one, 8. Cutter, 9. Limiting plate, 10. Electric telescopic rod two, 11. Transmission block, 12. Guide roller, 13. Tamping column, 14. Feeding hopper, 15. Discharge pipe, 16. Mixing shaft, 17. Mixing motor, 18. Spiral discharge blade, 19. Transmission shaft, 20. Gear, 21. Protective box, 22. Drive motor, 23. Controller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0023] Example 1

[0024] like Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: a rubber mixing machine for fluororubber processing includes a base 1 and two sets of support boxes 2 vertically arranged on the base 1. Two sets of rollers 3 are rotatably arranged on the opposite side walls of the two sets of support boxes 2. A driving component for driving the two sets of rollers 3 to rotate relative to each other is arranged in one set of support boxes 2. A top plate 4 is also provided on the top of the two sets of support boxes 2, and an auxiliary mixing component for automatically cutting and recycling the mixing materials and a feeding component for accurately adding colorants are integrated on the top plate 4.

[0025] like Figure 3 As shown, the support box 2 has grooves on opposite side walls. The auxiliary mixing assembly includes a lifting plate 5 that slides in two sets of grooves at both ends. A storage box 6 is provided at the bottom of the lifting plate 5, and the bottom of the box is open. An electric telescopic rod 7 is provided on the top plate 4, and the free end of the electric telescopic rod 7 is connected to the lifting plate 5 to drive the lifting. A cutting blade 8 with its blade facing downward is provided on one side of the bottom wall of the storage box 6, and a limit plate 9 slides through the side wall on the other side. The cutting blade 8 has a blade angle of 15-20°, a blade length that is the same as the width of the storage box 6, and the blade extends downward to a distance of 5-10 mm from the surface of the roller 3 to ensure that the mixed material can be cut. An electric telescopic rod is provided on the outer wall of the storage box 6. The second rod 10 is connected to the limit plate 9 at its free end via a transmission block 11, enabling the limit plate 9 to be opened or partially closed at the bottom. The box on one side of the cutter 8 also has a guide roller 12 that rotates. In actual use, the electric telescopic rod 7 drives the lifting plate 5 to move downwards. The cutter 8 cuts the mixed material on the roller 3 and prevents it from accumulating and rolling into the box. The limit plate 9 limits the material to prevent it from falling. After completion, the free end of the electric telescopic rod 7 is retracted, and the electric telescopic rod 10 drives the limit plate 9 to move and no longer block the bottom of the box, so that the rolled-up mixed material falls back onto the two sets of rollers 3 to continue mixing. This operation is repeated to reduce the intensity of manual labor.

[0026] To prevent the mixture from adhering to the inside of the box, a tamping post 13 is installed on the top plate 4. The lower end of the tamping post 13 passes through the lifting plate 5 and the storage box 6 and extends into the inside of the storage box 6. The tamping post 13 is a cylindrical structure made of No. 45 steel with a diameter of 15-20mm. Its length is adapted to the distance from the top plate 4 to the bottom of the storage box 6. The lower end is hemispherical to avoid scratching the mixed material. When the mixture is wound up, the electric telescopic rod 7 retracts its free end while the tamping post 13 is inserted into the box and applies downward squeezing force to the mixture, so that the mixture falls smoothly.

[0027] Example 2

[0028] Based on Example 1, such as Figure 2 and Figure 4As shown, the feeding assembly includes a feeding hopper 14 mounted on the top plate 4. A discharge pipe 15 is located at the bottom of the feeding hopper 14, extending through the top plate 4 and above the two sets of rollers 3. A stirring shaft 16 rotates on the inner top wall of the feeding hopper 14. A stirring motor 17 is mounted on the top of the feeding hopper 14, and the motor's power output shaft is connected to the stirring shaft 16. A stirring rod is mounted on the stirring shaft 16, and a spiral feeding blade 18 is mounted on the part of the stirring shaft 16 located inside the discharge pipe 15. The amount of pigment particles falling is controlled by precisely controlling the number of stirring revolutions of the stirring motor 17. The feeding hopper 14 has a conical structure with a polished inner wall and Ra≤0.8μm to prevent pigment adhesion. The discharge pipe 15 has a cylindrical structure, with its lower end extending through the top plate 4 and 10-15mm above the two sets of rollers 3, ensuring that the pigment falls accurately onto the mixed material between the rollers 3.

[0029] like Figure 2 As shown, both sets of rollers 3 are connected to a drive shaft 19 via a key at one end near the support box 2. Gears 20 are fitted onto the ends of both drive shafts 19 inside the support box 2 via a key, and the two sets of gears 20 mesh with each other. A protective housing 21 is bolted to the outer wall of the support box 2. The protective housing 21 is a sealed structure, filled with grease to prevent rust on the gears 20 and the entry of foreign objects. A drive motor 22 is fixed to the outer wall of the protective housing 21 via a motor bracket. The power output shaft of the drive motor 22 is connected to one set of drive shafts 19. When the drive motor 22 starts, it drives one set of gears 20 to rotate via the drive shafts 19. The other set of gears 20 rotates in the opposite direction due to meshing, thereby driving the two sets of rollers 3 to rotate synchronously in opposite directions at a speed of 50-100 r / min. To ensure the materials are fully compressed and mixed between rollers 3, controller 23 controls the start and stop of stirring motor 17 through a preset program, and records the number of rotations of stirring motor 17 through a counting module. Since the pitch of the spiral feed blade 18 is fixed, the amount of colorant discharged from discharge pipe 15 per rotation is a fixed value, such as 5-10g per rotation. This can be pre-calculated using the pitch, diameter of discharge pipe 15, and colorant bulk density. Therefore, by precisely controlling the number of rotations of stirring motor 17 (e.g., controlling the motor to rotate 2-4 times to add 20g of colorant), precise control of the amount of colorant added can be achieved. Simultaneously, controller 23 can set the interval for colorant addition, such as adding every 5-8 minutes, matching the mixing cycle to avoid frequent or slow additions, ensuring color uniformity and mixing efficiency.

[0030] The support box 2 is also equipped with a controller 23 on its side wall. The stirring motor 17, drive motor 22, electric telescopic rod 7 and electric telescopic rod 10 are all electrically connected to the controller 23.

[0031] After the mixed material has been mixed on the roller 3 for a preset time, the controller 23 controls the free end of the electric telescopic rod 7 to extend, driving the lifting plate 5 to move downwards along the chute until the cutting edge of the cutter 8 is close to the surface of the roller 3; the roller 3 continues to rotate, the mixed material is cut by the cutter 8, and at the same time, under the guidance of the guide roller 12, it rolls into the storage box 6. The limiting plate 9 is in a semi-closed state, preventing the mixed material from falling, thus achieving temporary storage of the material; after the cutting action has continued for a preset time, the controller 23 controls the free end of the electric telescopic rod 7 to retract, driving the lifting plate 5 to move upwards. At this time, the tamping column 13, being fixed to the top plate 4, moves downward relative to the storage box 6, inserts into the storage box 6, and applies downward squeezing force to the mixed material inside the box, preventing the material from adhering to the inner wall of the storage box 6; at the same time, the controller 23 controls the free end of the electric telescopic rod 10 to retract, driving the limiting plate 9 to slide out of the storage box 6, and the bottom opening is fully opened. Under the action of gravity and the squeezing force of the tamping column 13, the mixed material falls between the two sets of rollers 3, and the mixing process continues to repeat; the above actions can be set by the controller 23 to repeat the number of cycles, without manual intervention, greatly reducing labor intensity.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, material, or apparatus.

[0033] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber mixing mill for processing fluoro rubber, comprising a base (1) and two groups of support boxes (2) vertically arranged on the base (1), characterized in that: Two sets of rollers (3) are rotatably provided on the opposite side walls of the two sets of support boxes (2). A drive assembly for driving the two sets of rollers (3) to rotate relative to each other is provided in one set of support boxes (2). A top plate (4) is also provided on the top of the two sets of support boxes (2), and an auxiliary mixing assembly for automatically cutting and recycling the mixing materials and a feeding assembly for accurately adding colorant are integrated on the top plate (4). The support box (2) has a sliding groove on its opposite side wall. The auxiliary mixing component includes a lifting plate (5) with both ends slidably disposed in two sets of sliding grooves. The bottom of the lifting plate (5) is provided with a storage box (6) with an opening at the bottom. The top plate (4) is provided with an electric telescopic rod (7) and the free end of the electric telescopic rod (7) is connected to the lifting plate (5) to drive the lifting. One side of the bottom wall of the storage box (6) is provided with a cutting blade (8) with the blade facing downwards and the other side penetrates the side wall and slides through a limiting plate (9). The outer wall of the storage box (6) is provided with an electric telescopic rod (2) and the free end is connected to the limiting plate (9) through a transmission block (11). The box on the side of the cutting blade (8) is also provided with a guide roller (12).

2. A rubber mixing mill for processing fluorine rubber according to claim 1, characterized in that: A tamping column (13) is provided on the top plate (4). The lower end of the tamping column (13) passes through the lifting plate (5) and the storage box (6) and extends into the interior of the storage box (6).

3. A rubber mixing mill for processing fluorine rubber according to claim 2, characterized in that: The feeding assembly includes a feeding hopper (14) set on the top plate (4). The bottom of the feeding hopper (14) is provided with a discharge pipe (15), and the bottom of the discharge pipe (15) extends through the top plate (4) to the bottom and is located above the two sets of rollers (3). The inner top wall of the feeding hopper (14) is provided with a stirring shaft (16). The top of the feeding hopper (14) is provided with a stirring motor (17), and the motor power output shaft is connected to the stirring shaft (16). The stirring shaft (16) is provided with a stirring rod, and the part of the stirring shaft (16) located inside the discharge pipe (15) is provided with a spiral feeding blade (18).

4. A rubber mixing mill for processing fluorine rubber according to claim 3, characterized in that: Two sets of rollers (3) are connected to a drive shaft (19) by a key at one end of the support box (2) on the same side. The two sets of drive shafts (19) are connected to a gear (20) by a key at one end of the support box (2), and the two sets of gears (20) mesh with each other. The outer wall of the support box (2) is fixed with a protective box (21) by bolts. The outer wall of the protective box (21) is fixed with a drive motor (22) by a motor bracket. The power output shaft of the drive motor (22) is connected to a set of drive shafts (19).

5. A rubber mixing mill for fluororubber processing according to claim 4, characterized in that: The support box (2) is also equipped with a controller (23) on its side wall. The stirring motor (17), drive motor (22), electric telescopic rod one (7) and electric telescopic rod two (10) are all electrically connected to the controller (23).

6. A rubber mixing mill for processing fluorine rubber according to claim 5, characterized in that: The feeding hopper (14) has a conical structure and the inner wall is polished; the discharge pipe (15) has a cylindrical structure, the lower end of which penetrates the top plate (4) and extends to 10-15mm above the two sets of rollers (3).

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