A raw material mixing device for rubber plastic mixing

Abstract

The utility model discloses a raw material mixing device of rubber plastic mixing, including workbench surface, be equipped with left half cylinder and right half cylinder for splicing into mixing cylinder on workbench surface, still be equipped with drive assembly for driving left half cylinder and right half cylinder to do the combined or separate movement on workbench surface, be equipped with rotating shaft between left half cylinder and right half cylinder, there are a plurality of second mixing plate for mixing rubber plastic in mixing cylinder on rotating shaft array, the clearance of left half cylinder and right half cylinder corresponds the fixed first mixing plate of second mixing plate, the cover of mixing cylinder is equipped with cover, and the top of left half cylinder and right half cylinder is equipped with anti -loose assembly for preventing the cover from falling off respectively. Through adopting the structural design of left half cylinder and right half cylinder splicing and forming mixing cylinder, make mixing cylinder can open fast after production, greatly facilitate the cleaning of the inner wall of cylinder body, stirring part and dead angle area, effectively avoid the cross -contamination between different batches of materials.

Description

Technical Field

[0001] This utility model relates to the field of rubber and plastic production technology, and in particular to a raw material mixing device for rubber and plastic compounding. Background Technology

[0002] Rubber and plastic compounding is a crucial process involving the uniform mixing of raw rubber with various compounding agents under mechanical action and preliminary plasticizing. Its main significance lies in fully plasticizing the rubber or plastic matrix through shearing, extrusion, and kneading, reducing molecular chain rigidity, improving flowability and processability, while ensuring the uniform dispersion of various additives to form a stable mixture. This not only improves the processing properties of the material, such as calendering, extrusion, and compression molding, but also significantly enhances the physical and mechanical properties and chemical stability of the final product.

[0003] In existing technologies, rubber and plastic compounding raw material mixing devices mostly adopt an integral cylindrical structure rather than a modular design, resulting in significant drawbacks in cleaning and maintenance. Because the cylinder cannot be disassembled, materials easily remain on the inner wall and in the mixing area, making thorough cleaning difficult, especially when changing formulas or producing materials of different colors and properties, which can easily lead to cross-contamination. This non-split structure makes manual cleaning extremely inconvenient, time-consuming, and labor-intensive, and also creates blind spots in cleaning, affecting product quality stability. Utility Model Content

[0004] The purpose of this utility model is to provide a raw material mixing device for rubber and plastic compounding, so as to solve the problem mentioned in the background art that the cylinder of the raw material mixing device for rubber and plastic compounding is not detachable and is difficult to clean.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a raw material mixing device for rubber and plastic compounding, comprising a worktable, a left half-cylinder and a right half-cylinder for splicing into a mixing cylinder, a drive assembly for driving the left half-cylinder and the right half-cylinder to perform merging or separating movements, a rotating shaft between the left half-cylinder and the right half-cylinder, an array of second mixing plates for mixing the rubber and plastic in the mixing cylinder on the rotating shaft, a first mixing plate fixed at the gaps between the second mixing plates on the left half-cylinder and the right half-cylinder, a cover on the mixing cylinder, and anti-loosening components for preventing the cover from falling off on the top of the left half-cylinder and the right half-cylinder respectively.

[0006] Based on the preferred embodiment of this technical solution, support rods are fixed on the left and right sides of the workbench, and the support rods on the left and right sides are connected by guide rods. Connecting plates for the guide rods to pass through are provided on the left and right half cylinders.

[0007] In the preferred embodiment of this technical solution, a cylinder is provided on the worktable, and a rotating shaft is rotatably connected to the cylinder. Openings for avoiding the cylinder are provided on the left and right half-cylinders, respectively.

[0008] Based on the preferred embodiment of this technical solution, the cylinder is provided with an annular protrusion, and the openings of the left and right half cylinders are respectively provided with second slots for inserting the annular protrusion, and a first fluororubber sheet is attached inside the second slot.

[0009] In a preferred embodiment of this technical solution, the left half-cylinder and the right half-cylinder are fitted together on a first slot, and the right half-cylinder is provided with a first insert for inserting into the first slot, and a second fluororubber sheet is fitted inside the first slot.

[0010] Based on the preferred embodiment of this technical solution, the anti-loosening component includes a stud that is spirally connected to the left or right half of the cylinder, a notch on the cover for avoiding the stud, a rotating block on the top of the stud, a moving block on one side of the rotating block, a countersunk hole on the moving block, a limiting rod connected to the rotating block passing through the countersunk hole, a baffle on the end of the limiting rod away from the rotating block, a spring sleeved on the limiting rod, and a limiting post on the cover for limiting the moving block.

[0011] In a preferred embodiment of this technical solution, the driving component includes a bidirectional screw that rotates between left and right support rods, a motor for driving the bidirectional screw to rotate is provided on the support rod, and a screw hole corresponding to the bidirectional screw is provided on the connecting plate.

[0012] In a preferred embodiment of this technical solution, the drive component includes a cylinder mounted on a support rod, and the output end of the cylinder is connected to a connecting plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By adopting a structural design that combines the left and right halves of the cylinder to form a mixing cylinder, the mixing cylinder can be quickly opened after production, which greatly facilitates the cleaning of the inner wall of the cylinder, the mixing components and dead corner areas, and effectively avoids cross-contamination between different batches of materials.

[0015] 2. By setting a shared rotating shaft and mixing plate between the left and right half-cylinders, the material is ensured to be subjected to uniform shearing and kneading during the mixing process, thus improving the mixing uniformity. The first mixing plate is fixed to the inner wall of the half-cylinder and is staggered with the second mixing plate on the rotating shaft to form a multi-stage mixing structure, thereby improving the mixing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of a raw material mixing device for rubber and plastic compounding according to the present invention.

[0017] Figure 2 This is a schematic diagram of the left half-cylinder structure of this utility model;

[0018] Figure 3This is a schematic diagram of the movable block structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the rotating block structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the first mixing plate structure of this utility model;

[0021] Figure 6 This is a schematic diagram of another embodiment of the drive component of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Workbench surface; 11. Support rod; 12. Guide rod; 20. First mixing plate; 201. First slot; 202. First insert block; 203. Connecting plate; 21. Left half cylinder; 22. Right half cylinder; 231. Second mixing plate; 31. Cylinder; 311. Annular protrusion; 32. Rotating shaft; 4. Cover; 40. Notch; 42. Limiting post; 43. Rotating block; 431. Stud; 44. Moving block; 441. Countersunk hole; 45. Limiting rod; 451. Spring; 452. Baffle; 51. Motor; 511. Bidirectional screw; 52. Cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6This utility model provides an embodiment: a raw material mixing device for rubber and plastic compounding, including a worktable 1, on which a left half cylinder 21 and a right half cylinder 22 for splicing into a mixing cylinder are provided. The worktable 1 is also provided with a drive assembly for driving the left half cylinder 21 and the right half cylinder 22 to perform merging or separation movements. A rotating shaft 32 is provided between the left half cylinder 21 and the right half cylinder 22. A plurality of second mixing plates 231 for mixing the rubber and plastic in the mixing cylinder are arrayed on the rotating shaft 32. A first mixing plate 20 is fixed on the left half cylinder 21 and the right half cylinder 22 at the gaps corresponding to the second mixing plates 231. A cover 4 is provided on the top of the mixing cylinder. Anti-loosening components for preventing the cover 4 from falling off are respectively provided on the top of the left half cylinder 21 and the right half cylinder 22. The mixing drum structure, formed by splicing the left half-cylinder 21 and the right half-cylinder 22, allows for quick opening after production, greatly facilitating cleaning of the inner wall, mixing components, and dead corners. This effectively prevents cross-contamination between different batches of materials, making it particularly suitable for rubber and plastic mixing processes with frequent formula changes. A shared rotating shaft 32 and mixing plate between the left and right half-cylinders 21 and 22 ensure uniform shearing and kneading of the materials during mixing, improving mixing uniformity. The first mixing plate 20, fixed to the inner wall of the half-cylinder, is staggered with the second mixing plate 231 on the rotating shaft 32, forming a multi-stage mixing structure and improving mixing efficiency. The drive assembly automatically controls the merging and separation of the left and right half-cylinders 21 and 22, simplifying operation and reducing manual labor intensity. The cover 4, used in conjunction with an anti-loosening component, ensures reliable sealing during mixing, prevents accidental detachment, and guarantees safe equipment operation.

[0025] Please see Figure 1-6 A further embodiment of this solution is as follows: Support rods 11 are fixed on both the left and right sides of the worktable 1. The support rods 11 on the left and right sides are connected by guide rods 12. Connecting plates 203 are provided on the left half-cylinder 21 and the right half-cylinder 22 for the guide rods 12 to pass through. By setting up a guide structure composed of support rods 11 and guide rods 12, a stable sliding track is provided for the horizontal movement of the left half-cylinder 21 and the right half-cylinder 22, ensuring smooth movement and accurate alignment of the two half-cylinders during merging and separating. This avoids misalignment of the joint surface or seal failure due to skewness, improving the reliability and service life of the equipment.

[0026] Please see Figure 1-2 A further solution based on this embodiment is as follows: a cylinder 31 is provided on the worktable 1, and a rotating shaft 32 is rotatably connected to the cylinder 31. The left half-cylinder 21 and the right half-cylinder 22 are respectively provided with openings to avoid the cylinder 31. By setting the rotating shaft 32 on the cylinder 31, direct contact between the left half-cylinder 21 and the right half-cylinder 22 and the rotating shaft 32 is avoided, thereby avoiding dynamic sealing.

[0027] Please see Figure 1-3A further embodiment of this solution is as follows: The cylinder 31 is provided with an annular protrusion 311, and the openings of the left half-cylinder 21 and the right half-cylinder 22 are respectively provided with second slots for inserting the annular protrusion 311. A first fluororubber sheet is attached to the second slot. The second slot facilitates the attachment of the first fluororubber sheet to increase sealing performance, and the insertion of the annular protrusion 311 into the second slot further enhances the sealing.

[0028] Please see Figure 1-2 A further embodiment of this solution is as follows: a first slot 201 is provided on the side where the left half-cylinder 21 and the right half-cylinder 22 are in contact, and a first insert block 202 for inserting the first slot 201 is provided on the right half-cylinder 22. A second fluororubber sheet is attached inside the first slot 201. By embedding the second fluororubber sheet inside the slot, a reliable static sealing structure is formed, which effectively prevents high-temperature materials from leaking from the joint between the two half-cylinders during the mixing process. The sealing performance is stable. The left half-cylinder 21 and the right half-cylinder 22 form a mixing cylinder. When the cylinder 31 and the mixing cylinder are coaxial, both the first fluororubber sheet and the second fluororubber sheet are in a semi-compressed state.

[0029] Please see Figure 3-4 A further solution based on this embodiment is as follows: The anti-loosening component includes a stud 431 screwed onto the left half-cylinder 21 or the right half-cylinder 22. The cover 4 has a notch 40 for avoiding the stud 431. A rotating block 43 is provided on the top of the stud 431. A moving block 44 is provided on one side of the rotating block 43. A countersunk hole 441 is provided on the moving block 441. A limiting rod 45 connected to the rotating block 43 passes through the countersunk hole 441. A baffle 452 is provided at the end of the limiting rod 45 away from the rotating block 43. A spring 451 is sleeved on the limiting rod 45. The cover 4 has a limiting post 42 for limiting the moving block 44. The position of the rotating block 43 is adjusted by the stud 431 to prevent the cover 4 from falling off. The spring 451 pushes the moving block 44 so that the moving block 44 is between the two limiting posts 42, preventing the stud 431 from rotating off and causing the cover 4 to fall off.

[0030] Please see Figure 1-2 A further solution based on this embodiment is as follows: the driving assembly includes a bidirectional screw 511 that rotates between the left and right support rods 11. The support rods 11 are equipped with a motor 51 for driving the bidirectional screw 511 to rotate, and the connecting plate 203 has screw holes corresponding to the bidirectional screw 511. By using the motor 51 to drive the bidirectional screw 511, the left and right half-cylinders 22 can be synchronously driven to merge inwards or separate outwards, resulting in smooth movement and precise control. This ensures good alignment and reliable sealing when the two half-cylinders are closed. The threaded drive has strong self-locking properties, maintaining a stable position after closure and preventing accidental separation. The method of synchronous rotation of multiple motors 51 is existing technology.

[0031] For another embodiment of the driver component, please refer to [link / reference]. Figure 5A further solution based on this embodiment is as follows: the drive assembly includes a cylinder 52 mounted on the support rod 11, and the output end of the cylinder 52 is connected to the connecting plate 203. The cylinder 52 provides a fast response and large thrust, enabling rapid opening and closing of the two halves of the cylinder, while avoiding the need for lubrication during maintenance of the drive assembly.

[0032] Working principle: First, start the power source in the drive assembly. If the structure of the bidirectional screw 511 driven by motor 51 is adopted, the motor 51 will rotate and drive the bidirectional screw 511 to rotate. Since the connecting plates 203 on the left half cylinder 21 and the right half cylinder 22 are respectively provided with threaded holes that are threaded with the bidirectional screw 511, and the left and right threads of the bidirectional screw 511 are turned in opposite directions, when the bidirectional screw 511 rotates, the left half cylinder 21 and the right half cylinder 22 will synchronously close towards the middle or separate to both sides under the guidance of the guide rod 12 and the connecting plate 203. If the drive method of cylinder 52 is adopted, the air is controlled by the cylinder 52. The telescopic movement of cylinder 52 directly pushes or pulls the connecting plate 203, thereby causing the left half-cylinder 21 and the right half-cylinder 22 to open and close. When the left half-cylinder 21 and the right half-cylinder 22 merge, the first insert block 202 on the right half-cylinder 22 is inserted into the first slot 201 of the left half-cylinder 21, and at the same time, the annular protrusion 311 on the cylinder 31 is inserted into the second slot at the opening of the left half-cylinder 21 and the right half-cylinder 22, so that the mixing cylinder is closed and formed as a whole. At this time, the second fluororubber sheet in the first slot 201 is compressed to form a static sealing structure, preventing high-temperature and high-viscosity rubber and plastic materials from leaking from the joint between the two half-cylinders. The first fluororubber sheet, which is attached between the annular protrusion 311 and the second slot, is also in a semi-compressed state, further enhancing the sealing performance of the rotating shaft 32 area and preventing material from seeping into the connection between the rotating shaft 32 and the cylinder 31. After the mixing cylinder is closed, the operator pours rubber plastic into the mixing cylinder, places the cover 4 on top of the mixing cylinder, and locks it using the anti-loosening component. Specifically, the operator rotates the stud 431 to move the rotating block 43 to the position above the notch 40 of the cover 4, and then the spring 451 pushes the moving block 44 to engage between the two limiting posts 42, thereby restricting the rotation. The moving block 43 rotates in the opposite direction, effectively preventing the stud 431 from loosening due to vibration or external force, ensuring that the cover 4 is firmly covering the mixing cylinder and ensuring sealing safety during the mixing process; then the mixing power device is started to drive the rotating shaft 32 to rotate. Multiple second mixing plates 231 are arrayed on the rotating shaft 32. During the rotation, the second mixing plates 231 and the first mixing plates 20 fixed on the inner walls of the left half cylinder 21 and the right half cylinder 22 move alternately, producing shearing, kneading and tumbling effects on the rubber and plastic raw materials in the mixing cylinder, forming a multi-stage mixing effect and improving the uniformity and efficiency of material mixing;Because the first mixing plate 20 is fixed to the inner wall of the cylinder and does not rotate with the shaft, while the second mixing plate 231 rotates at high speed with the rotating shaft 32, relative motion is formed between the two, enhancing the shear force and dispersion ability between materials. This is especially suitable for the uniform mixing of high-viscosity materials. After mixing is completed, the drive device of the rotating shaft 32 is turned off, and stirring is stopped. Then, the drive assembly is reversed to separate the left half cylinder 21 and the right half cylinder 22, and the mixing cylinder opens accordingly. The operator uses tools such as shovels to discharge the viscous rubber and plastic mixture, exposing all the internal working surfaces, including the rotating shaft 32, the second mixing plate 231, the first mixing plate 20, and the inner wall of the cylinder. This facilitates the operator to thoroughly clean the residual materials without disassembling any core components. The rotating shaft 32 is specifically driven by a motor. The motor, motor 51, the synchronous motion technology of motor 51, and its corresponding wiring, program, and control method are all existing technologies, and their working principles will not be elaborated here.

[0033] 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 raw material mixing device for rubber and plastic compounding, characterized in that: It includes a worktable (1), on which a left half cylinder (21) and a right half cylinder (22) for splicing into a mixing cylinder are provided. The worktable (1) is also provided with a drive assembly for driving the left half cylinder (21) and the right half cylinder (22) to merge or separate. A rotating shaft (32) is provided between the left half cylinder (21) and the right half cylinder (22). Several second mixing plates (231) for mixing rubber and plastic in the mixing cylinder are arrayed on the rotating shaft (32). A first mixing plate (20) is fixed at the gap between the second mixing plate (231) on the left half cylinder (21) and the right half cylinder (22). A cover (4) is provided on the top of the mixing cylinder. Anti-loosening components for preventing the cover (4) from falling off are provided on the top of the left half cylinder (21) and the right half cylinder (22).

2. The raw material mixing device for rubber and plastic compounding according to claim 1, characterized in that: Support rods (11) are fixed on the left and right sides of the workbench (1). The support rods (11) on the left and right sides are connected by guide rods (12). Connecting plates (203) are provided on the left half cylinder (21) and the right half cylinder (22) for the guide rods (12) to pass through.

3. The raw material mixing device for rubber and plastic compounding according to claim 2, characterized in that: A cylinder (31) is provided on the worktable (1), and a rotating shaft (32) is rotatably connected to the cylinder (31). The left half cylinder (21) and the right half cylinder (22) are respectively provided with openings to avoid the cylinder (31).

4. The raw material mixing device for rubber and plastic compounding according to claim 3, characterized in that: The cylinder (31) is provided with an annular protrusion (311), and the openings of the left half cylinder (21) and the right half cylinder (22) are respectively provided with a second slot for inserting the annular protrusion (311), and a first fluororubber sheet is attached to the second slot.

5. The raw material mixing device for rubber and plastic compounding according to claim 4, characterized in that: The left half-cylinder (21) and the right half-cylinder (22) are fitted with a first slot (201), and the right half-cylinder (22) is provided with a first insert (202) for inserting the first slot (201), and a second fluororubber sheet is attached inside the first slot (201).

6. The raw material mixing device for rubber and plastic compounding according to claim 5, characterized in that: The anti-loosening component includes a stud (431) that is spirally connected to the left half cylinder (21) or the right half cylinder (22). The cover (4) is provided with a notch (40) for avoiding the stud (431). The top of the stud (431) is provided with a rotating block (43). A moving block (44) is provided on one side of the rotating block (43). The moving block (44) is provided with a countersunk hole (441). A limiting rod (45) connected to the rotating block (43) is inserted into the countersunk hole (441). A baffle (452) is provided at the end of the limiting rod (45) away from the rotating block (43). A spring (451) is sleeved on the limiting rod (45). The cover (4) is provided with a limiting post (42) for limiting the moving block (44).

7. The raw material mixing device for rubber and plastic compounding according to claim 1, characterized in that: The drive assembly includes a bidirectional screw (511) that rotates between the left and right support rods (11). The support rods (11) are provided with a motor (51) for driving the bidirectional screw (511) to rotate. The connecting plate (203) is provided with a screw hole corresponding to the bidirectional screw (511).

8. The raw material mixing device for rubber and plastic compounding according to claim 1, characterized in that: The drive assembly includes a cylinder (52) mounted on a support rod (11), the output end of which is connected to a connecting plate (203).

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