Fluororubber premixing and cutting device

Abstract

The utility model discloses a kind of fluorine rubber premixing rubber cutting and spreading device, it is related to the production and processing technical field of fluorine rubber premixing rubber, including conveying unit, cutting unit, spreading unit and flattening unit, cutting unit is located in the extrusion port of extruder, conveying unit one end is located below the extrusion port of extruder, the other end of conveying unit extends in the direction away from extruder, flattening unit is located on conveying unit, spreading unit is located between cutting unit and flattening unit, spreading unit includes spreading ball and blocking frame, blocking frame is located in the side of near extruder direction, spreading ball is located between blocking frame and flattening unit. By the spreading ball of spreading unit relies on its weight and rolling characteristics, even flexible pressure is applied to the tubular rubber material that is easy to stick after cutting, cooperate the continuous conveying of conveying unit, make rubber material gradually stretch along width direction, realize the efficient conversion of tubular fluorine rubber premixing rubber to flat sheet rubber material.

Description

Technical Field

[0001] This utility model relates to the field of production and processing technology of fluororubber premixed rubber, and in particular to a fluororubber premixed rubber slitting and unfolding device. Background Technology

[0002] Fluororubber premixed rubber is a special rubber material with vinylidene fluoride / hexafluoropropylene copolymer as the main component (fluorine content 66%). The product is in the form of white or light yellow translucent sheets, with added bisphenol A (AF) / BPP and other vulcanizing agents. It belongs to the premixed rubber category and is produced by manufacturers such as Chengdu Senfa Rubber & Plastics and Fluorotech (Xiamen). It is widely used in high and low temperature sealing, vacuum instruments and equipment, chemical equipment, automotive and aerospace fields, and is suitable for molding, extrusion and other processes to manufacture sealing rings, oil seals and other components.

[0003] In the industrial production process of fluororubber premixed rubber, extrusion is a preliminary step before slitting and unfolding. The extruded rubber compound needs to be flattened before it can be slicing and weighed, providing a regular substrate for final product processing. In existing technologies, during slitting and unfolding, the strong adhesion and softness of fluororubber premixed rubber make it prone to sticking, collapsing, wrinkling, and stacking during flattening, affecting production efficiency and product quality. Furthermore, existing flattening methods are inefficient, cannot achieve continuous processing, and the slow cooling rate of fluororubber premixed rubber means that uncooled material is prone to deformation in subsequent processes, further extending the production cycle and hindering overall production efficiency, making it difficult to meet the demands of large-scale, high-precision production. Utility Model Content

[0004] This invention aims to provide a fluororubber premixed rubber slitting and unfolding device. The unfolding ball of the unfolding unit applies uniform and flexible pressure to the easily sticky cylindrical rubber material after slitting, relying on its own weight and rolling characteristics. Combined with the continuous conveying of the conveying unit, the rubber material is gradually unfolded along the width direction, realizing the efficient conversion of the cylindrical fluororubber premixed rubber into flat sheet rubber material. This ensures that the surface of the rubber material is undamaged and the thickness is uniform, laying a high-quality foundation for subsequent processing.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows: A fluororubber premix cutting and unfolding device includes a conveying unit, a cutting unit, an unfolding unit, and a flattening unit. The cutting unit is located at the extrusion port of an extruder for cutting the extruded fluororubber premix. One end of the conveying unit is located below the extrusion port of the extruder, and the other end of the conveying unit extends away from the extruder. The flattening unit is located on the conveying unit for flattening the cut and unfolded fluororubber premix. The unfolding unit is located between the cutting unit and the flattening unit for unfolding the cut fluororubber premix. The unfolding unit includes an unfolding ball and a blocking frame. The blocking frame is located on the side closer to the extruder, and the unfolding ball is located between the blocking frame and the flattening unit.

[0006] The unfolding sphere comprises three hollow spheres of different sizes, which are placed on a slit fluororubber premixed rubber. The hollow spheres are limited on both sides along the length of the conveying unit by a blocking frame and a flattening unit, respectively.

[0007] The hollow sphere has a radius of 50mm-150mm and a weight of 50g-500g; the outer wall of the hollow sphere is provided with heat dissipation holes.

[0008] The blocking frame includes a support frame and a blocking rod, with both ends of the blocking rod fixedly connected to both sides of the conveying unit via the support frame.

[0009] The support frame is a plate-shaped structure with a vertically oriented strip hole. The support frame is fixedly connected to both sides of the conveying unit through the strip hole.

[0010] The slitting unit includes a slitting bracket and a slitting blade, with the slitting blade positioned above the extrusion port of the extruder via the slitting bracket.

[0011] The flattening unit includes a flattening roller and two flattening frames. The two flattening frames are respectively located on both sides of the conveying unit and are fixedly connected to the conveying unit. The two ends of the flattening roller are rotatably connected to the flattening frames.

[0012] The flattening frame is a long strip structure with two strip-shaped holes arranged vertically on it. The support frame is fixedly connected to both sides of the conveying unit through the first strip-shaped hole.

[0013] The beneficial effects of this utility model are: 1. In this utility model, the fluororubber premixed rubber is automatically processed from extrusion to flattening through the coordinated operation of the conveying unit, the cutting unit, the unfolding unit and the flattening unit. This replaces the traditional manual operation, greatly reduces the waiting time of the process, adapts to the continuous production rhythm, effectively increases the processing output per unit time, and reduces the input of labor costs.

[0014] 2. In this utility model, the multi-spheres of the unfolding unit are combined with the blocking frame for limiting, and the height of the blocking frame is adjustable to ensure that the adhesive material is evenly spread along the preset path, avoiding sticking, collapse, wrinkling, stacking or deviation after cutting, ensuring the consistency of the adhesive material in the width direction, and providing a regular substrate for subsequent processing.

[0015] 3. In this utility model, the vertical strip hole design of the support frame and the flattening frame allows for the separate adjustment of the height of the blocking rod and the flattening roller, adapting to the processing of fluororubber premixed rubber of different thicknesses and hardnesses. It can meet the production of multiple specifications of products without replacing the core components, significantly improving the versatility of the mechanism and the flexibility of production.

[0016] 4. In this utility model, the flattening roller applies uniform rolling pressure to the rubber material through rotational connection, eliminating residual wrinkles and uneven thickness. At the same time, the rolling contact reduces frictional damage to the surface of the rubber material, ensuring the flatness and dimensional accuracy of the product surface. This lays a high-quality foundation for subsequent processes such as slicing and weighing, and improves the final product qualification rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fluororubber premixed rubber cutting and unfolding device of this utility model.

[0018] The components include: 1. Conveying unit; 2. Cutting unit; 3. Unfolding unit; 4. Flattening unit; 5. Unfolding ball; 6. Blocking frame; 7. Support frame; 8. Blocking rod; 9. Slot hole one; 10. Cutting bracket; 11. Cutting knife; 12. Flattening roller; 13. Flattening frame; 14. Slot hole two; 15. Extruder; 16. Extrusion port; 17. Fluororubber premix. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0020] Example 1 This embodiment provides a fluororubber premixed rubber slitting and unfolding device, including a conveying unit 1, a slitting unit 2, an unfolding unit 3, and a flattening unit 4. The slitting unit 2 is located at the extrusion port 16 of the extruder 15 for slitting the extruded fluororubber premixed rubber 17. One end of the conveying unit 1 is located below the extrusion port 16 of the extruder 15, and the other end of the conveying unit 1 extends away from the extruder 15. The flattening unit 4 is located on the conveying unit 1 for flattening the slitting and unfolded fluororubber premixed rubber 17. The unfolding unit 3 is located between the slitting unit 2 and the flattening unit 4 for unfolding the slitting fluororubber premixed rubber 17. The unfolding unit 3 includes an unfolding ball 5 and a blocking frame 6. The blocking frame 6 is located on the side closer to the extruder 15, and the unfolding ball 5 is located between the blocking frame 6 and the flattening unit 4.

[0021] In this embodiment, the unfolding unit 3 includes an unfolding ball 5 for applying uniform and flexible pressure to the slit rubber material to achieve unfolding, and a blocking frame 6 for limiting the unfolding ball 5 along the length direction of the conveying unit. The blocking frame 6 is located on the side near the extruder 15 to prevent the unfolding ball 5 from shifting and stacking with the conveying of the rubber material. The unfolding ball 5 is located between the blocking frame 6 and the flattening unit 4. The unfolding ball 5 is placed on the rubber material and, relying on its own weight and rolling characteristics, coordinates with the conveying rhythm of the conveying unit 1 to make the rubber material gradually unfold along the width direction.

[0022] In this embodiment, the fluororubber premix 17 is discharged from the extrusion port 16 of the extruder 15, cut by the cutting unit 2, and then transported by the conveying unit 1 to the unfolding unit 3. The unfolding ball 5 unfolds the cut rubber material, which is then conveyed to the flattening unit 4 for flattening. The conveying unit 1 continues to convey the fluororubber premix 17 to the next process. By compressing the fluororubber premix 17 with the weight of the unfolding ball, uniform force is applied to the rubber material, allowing the cut rubber material to flatten quickly and improving the flattening efficiency. At the same time, the unfolding ball rolls along with the rubber material during transport, reducing friction between the unfolding ball and the rubber material and preventing them from sticking together.

[0023] This embodiment realizes the automated processing of fluororubber premixed rubber 17. The cutting unit 2 cuts the extruded rubber material from the cylindrical shape, and then spreads it through the unfolding unit 3 and flattening unit 4 to form sheet rubber material. This eliminates the adhesion, collapse, wrinkles and stacking of the rubber material after cutting, and avoids uneven thickness in subsequent processing. It reduces problems such as rubber material damage and shape error, and ensures the processing quality of subsequent processes such as slicing and weighing of fluororubber premixed rubber 17. It is suitable for continuous rubber product production scenarios.

[0024] Example 2 In this embodiment, the unfolding ball 5 includes three hollow spheres of different sizes. The hollow spheres are placed on the slit fluororubber premixed rubber 17. The hollow spheres are limited on both sides along the length direction of the conveying unit 1 by the blocking frame 6 and the flattening unit 4, respectively.

[0025] In this embodiment, the dimensions of the three hollow spheres are approximately 70 mm in radius and 110 g in weight; approximately 60 mm in radius and 110 g in weight; and approximately 50 mm in size and 70 g in weight. The outer wall of the hollow spheres is provided with heat dissipation holes.

[0026] In this embodiment, three hollow spheres utilize their own weight and rolling characteristics to spread the slit fluororubber premix 17. After slitting, the rubber compound is prone to wrinkling and stacking; the hollow spheres apply uniform pressure, and in conjunction with the movement of the conveying unit 1, the rubber compound gradually spreads along the conveying direction, avoiding localized excessive stretching or accumulation. The arrangement of the hollow spheres covers the width of the rubber compound, improving the uniformity of spreading. Rolling contact reduces frictional damage to the rubber compound surface, while the flexible pressure of the spheres matches the elastic properties of fluororubber, ensuring the stability of the rubber compound's shape and providing a flat base material for subsequent flattening processes, improving the product's thickness consistency and surface quality. The combination of three hollow spheres with different diameters can accommodate flattening operations of rubber compounds with different viscosity properties, enhancing the versatility and applicability of the device. In this embodiment, the size and weight of the spreading spheres are suitable for fluororubber with a Mooney viscosity of 20-100. The heat dissipation holes on the outer wall of the unfolded ball can quickly dissipate the residual heat of the rubber material and the heat of the ball itself, preventing the rubber material from sticking to the ball due to high temperature, while ensuring that the rubber material cools down and sets, improving the flatness of the unfolded ball and its adaptability to subsequent processing.

[0027] Example 3 In this embodiment, the blocking frame 6 includes a support frame 7 and a blocking rod 8. The two ends of the blocking rod 8 are fixedly connected to both sides of the conveying unit 1 through the support frame 7. The support frame 7 is a plate-shaped structure with a vertically oriented slot 9. The support frame 7 is fixedly connected to both sides of the conveying unit 1 through the slot 9 by bolts or buckles.

[0028] In this embodiment, the blocking frame 6 is fixed to both sides of the conveying unit 1 by the support frame 7, and the blocking rod 8 is laterally intercepted near the extrusion port 16 to limit the unfolding ball 5: preventing the ball from shifting or stacking during the conveying of the rubber material, ensuring that the ball can continuously and stably unfold the rubber material, maintaining the unfolding range of multiple balls, preventing insufficient local unfolding due to ball misalignment, and stabilizing the working state of the ball to adapt to the processing rhythm of continuous conveying. By setting the strip hole 9, the height of the blocking rod 8 can be adjusted. According to the thickness, hardness and unfolding requirements of the fluororubber premix 17, the support frame 7 can be moved up and down along the strip hole 9 to adjust the distance between the blocking rod 8 and the conveying unit 1. This adapts to the processing requirements of different specifications of rubber materials, ensures the stable limiting effect of the blocking rod 8 on the unfolding ball 5, and improves the versatility and adaptability of the mechanism. It can meet diverse production scenarios without replacing parts and ensures the smoothness of continuous processing.

[0029] Example 4 In this embodiment, the slitting unit 2 includes a slitting bracket 10 and a slitting blade 11. The slitting blade 11 is disposed on the upper side of the extrusion port 16 of the extruder 15 through the slitting bracket 10.

[0030] In this embodiment, the slitting blade 11 is fixed on the upper side of the extrusion port 16 of the extruder 15 to slit the freshly extruded fluororubber premixed rubber 17. With the continuous conveying of the conveying unit 1, the slit rubber material enters the unfolding unit 3 and the flattening unit 4 in sequence. After flattening, a flat sheet of rubber material is finally formed.

[0031] Example 5 In this embodiment, the flattening unit 4 includes a flattening roller 12 and two flattening frames 13. The two flattening frames 13 are respectively located on both sides of the conveying unit 1 and are fixedly connected to the conveying unit 1. The two ends of the flattening roller 12 are rotatably connected to the flattening frame 13. The flattening frame 13 has a long strip structure and is provided with a second strip hole 14 arranged in the vertical direction. The support frame 7 is fixedly connected to both sides of the conveying unit 1 through the first strip hole 9.

[0032] In this embodiment, the two flattening frames 13 of the flattening unit 4 are fixed to both sides of the conveying unit 1. The flattening roller 12 is horizontally mounted between the two flattening frames 13 via a rotatable connection, and rolls and flattens the fluororubber premixed rubber 17 after it has been stretched by the unfolding unit 3, applying uniform pressure to the surface of the rubber material; eliminating residual wrinkles and uneven thickness of the rubber material, improving surface flatness and dimensional stability, and ensuring processing efficiency and product consistency. The long strip flattening frame 13 is fixed to the conveying unit 1 through the vertical strip hole 14, and the height of the flattening roller 12 can be adjusted up and down to adapt to rubber materials of different thicknesses, ensuring uniform flattening pressure and improving the versatility and processing adaptability of the mechanism.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A fluororubber premixed rubber slitting and unfolding device, characterized in that: The device includes a conveying unit (1), a cutting unit (2), a unfolding unit (3), and a flattening unit (4). The cutting unit (2) is located at the extrusion port (16) of the extruder (15) and is used to cut the extruded fluororubber premix (17). One end of the conveying unit (1) is located below the extrusion port (16) of the extruder (15), and the other end of the conveying unit (1) extends away from the extruder (15). The flattening unit (4) is located on the conveying unit (1) and is used to flatten the fluororubber premix (17) after cutting and unfolding. The unfolding unit (3) is located between the cutting unit (2) and the flattening unit (4) and is used to unfold the fluororubber premix (17) after cutting. The unfolding unit (3) includes an unfolding ball (5) and a blocking frame (6). The blocking frame (6) is located on the side closer to the extruder (15), and the unfolding ball (5) is located between the blocking frame (6) and the flattening unit (4).

2. The fluororubber premixed rubber slitting and unfolding device according to claim 1, characterized in that: The unfolding ball (5) includes three hollow spheres of different sizes. The hollow spheres are placed on the slit fluororubber premixed rubber (17). The hollow spheres are limited on both sides of the conveying unit (1) along the length direction by the blocking frame (6) and the flattening unit (4).

3. The fluororubber premixed rubber slitting and unfolding device according to claim 2, characterized in that: The hollow sphere has a radius of 50mm-150mm and a weight of 50g-500g; the outer wall of the hollow sphere is provided with heat dissipation holes.

4. The fluororubber premixed rubber slitting and unfolding device according to claim 2, characterized in that: The blocking frame (6) includes a support frame (7) and a blocking rod (8). The two ends of the blocking rod (8) are fixedly connected to the two sides of the conveying unit (1) through the support frame (7).

5. The fluororubber premixed rubber slitting and unfolding device according to claim 4, characterized in that: The support frame (7) is a plate-shaped structure with a strip hole (9) arranged in the vertical direction. The support frame (7) is fixedly connected to both sides of the conveying unit (1) through the strip hole (9).

6. The fluororubber premixed rubber slitting and unfolding device according to claim 1, characterized in that: The slitting unit (2) includes a slitting bracket (10) and a slitting blade (11). The slitting blade (11) is located above the extrusion port (16) of the extruder (15) via the slitting bracket (10).

7. The fluororubber premixed rubber slitting and unfolding device according to claim 1, characterized in that: The flattening unit (4) includes a flattening roller (12) and two flattening frames (13). The two flattening frames (13) are respectively located on both sides of the conveying unit (1) and are fixedly connected to the conveying unit (1). The two ends of the flattening roller (12) are rotatably connected to the flattening frames (13).

8. The fluororubber premixed rubber slitting and unfolding device according to claim 7, characterized in that: The flattening frame (13) is a long strip structure. The flattening frame (13) is provided with a strip hole (14) arranged in the vertical direction. The support frame (7) is fixedly connected to both sides of the conveying unit (1) through the strip hole (9).

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