A rubber hot melt device for tire production

Abstract

This utility model relates to the field of rubber processing technology, specifically a rubber hot-melt device for tire production, comprising: an outer shell, with a rotating roller 1 and a rotating roller 2 rotatably mounted inside the outer shell cavity; the middle of the rotating roller 1 is recessed inward to form an arc-shaped groove; an adjusting roller is located directly below the rotating roller 1 and the rotating roller 2, with spiral grooves on both outer sides of the adjusting roller, and the two spiral grooves rotating in opposite directions; two connecting frames are rotatably sleeved on the outer side of the shaft end of the adjusting roller; the beneficial effects are: the middle of the rotating roller 1 is recessed inward to form an arc-shaped groove, the middle of the rotating roller 2 is protruding outward to form an arc-shaped protrusion, and both ends of the adjusting roller are provided with spiral grooves, and the two spiral grooves rotating in opposite directions; the two sides of the arc-shaped rubber sheet are squeezed by the two spiral grooves and folded closer to each other, thereby facilitating the next extrusion and fusion; the entire process does not require manual operation by workers, reducing safety hazards and labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of rubber processing technology, specifically to a rubber hot melt device for tire production. Background Technology

[0002] In the tire production process, rubber needs to go through three key steps: plasticizing, mixing, and vulcanization. Among them, mixing is the core step used to melt and fuse various components (such as reinforcing agents, carbon black, vulcanizing agents, accelerators, antioxidants, softeners, etc.) together. Mixing is mainly carried out in an internal mixer.

[0003] In the prior art, Chinese utility model with publication number CN221641430U discloses a rubber processing internal mixer. A second motor is installed in the middle left side of the mixer body, and the output end of the second motor passes through the left side of the mixer body and is connected to a spiral rotor. The second motor drives the spiral rotor to rotate and internally mix the raw materials.

[0004] Currently, the screw rotor of an internal mixer compresses rubber into a flat shape. The rubber sheets then need to be manually turned so they are stacked together and returned to the screw rotor for further compression and fusion. This process requires constant manual turning of the rubber sheets, posing significant safety hazards and requiring high labor intensity. Therefore, this invention proposes a rubber hot-melt device for tire production to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a rubber hot melt device for tire production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rubber hot melt device for tire production, comprising: The outer shell has a rotating roller 1 and a rotating roller 2 rotatably mounted inside its cavity. The middle part of the rotating roller 1 is recessed inward to form an arc-shaped groove, and the middle part of the rotating roller 2 is protruded outward to form an arc-shaped protrusion, with the protrusion corresponding to the groove. The shaft ends of the rotating roller 1 and the rotating roller 2 are rotatably fitted with limiting sliders. An adjusting roller is located directly below the rotating roller one and rotating roller two. Both ends of the adjusting roller have spiral grooves on their outer sides, and the two spiral grooves rotate in opposite directions. Two connecting frames are rotatably sleeved on the outer side of the shaft end of the adjusting roller. The ends of the two connecting frames are rotatably connected to two limiting sliders respectively, and the two connecting frames form a "V" shape.

[0007] Preferably, a guide frame is fixed to the outer wall of the outer shell, and guide grooves are opened through both ends of the guide frame. Two limiting sliders are respectively slidably installed in the inner cavity of the guide grooves at both ends of the guide frame.

[0008] Preferably, a drive cylinder is fixed to the center of the front of the guide frame, a connecting block is rotatably sleeved on the shaft end of the adjusting roller, and the movable end of the drive cylinder is fixedly connected to the connecting block.

[0009] Preferably, the surface of the second rotating roller is provided with a plurality of inclined grooves arranged in a ring array. The inclined grooves form a 45-degree angle with the axial direction of the second rotating roller. Two sets of inclined grooves are provided and are symmetrically distributed at both ends of the raised area in the middle of the second rotating roller.

[0010] Preferably, the inner sidewall of the outer shell is provided with three adjustment slots, and the shaft ends of the first rotating roller, the second rotating roller, and the adjustment roller respectively movably pass through the three adjustment slots. The adjustment slots corresponding to the first rotating roller and the second rotating roller are arranged horizontally, and the adjustment slots corresponding to the adjustment roller are arranged vertically.

[0011] Preferably, a sealing plate 1 is rotatably sleeved on the outer side of the shaft end of the first rotating roller and the outer side of the shaft end of the second rotating roller, and a sealing plate 2 is rotatably sleeved on the outer side of the shaft end of the adjusting roller. The sealing plate 2 and the two sealing plates 1 respectively cover the inner openings of the three adjusting grooves.

[0012] Preferably, both sides of the inner opening end of the adjusting groove are provided with guide plates that are fixedly connected to the inner wall of the outer shell, and the edges of the first sealing plate and the second sealing plate are respectively attached to the guide plates at the corresponding positions.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The first roller of this invention has an inwardly recessed center forming an arc-shaped groove, while the second roller has an outwardly protruding center forming an arc-shaped bump, with the bump corresponding to the groove. After the first and second rollers extrude and fuse the rubber, the rubber sheet bends into an arc shape. An adjusting roller is provided below the first and second rollers, with spiral grooves at both ends. The two spiral grooves rotate in opposite directions. The two sides of the arc-shaped rubber sheet are extruded by the two spiral grooves and folded closer to each other, thus facilitating the next extrusion and fusion. Throughout the process, no manual operation by workers is required, reducing safety hazards and labor intensity. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the structure of the first and second rotating rollers of this utility model; Figure 4 This is an exploded view of the connecting frame and guide frame structure of this utility model; Figure 5 This is a schematic diagram of the installation of the sealing plate of this utility model; Figure 6 This is a cross-sectional view of the outer shell structure of this utility model.

[0015] In the diagram: 1. Outer shell; 11. Guide plate; 12. Adjusting groove; 2. Rotary roller one; 231. Limiting slider; 232. Sealing plate one; 3. Rotary roller two; 31. Inclined groove; 4. Adjusting roller; 41. Spiral groove; 42. Connecting block; 43. Sealing plate two; 5. Connecting frame; 6. Guide frame; 61. Guide slide groove; 62. Drive cylinder. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1, please refer to Figures 1-6 This utility model provides a technical solution: a rubber hot melt device for tire production, comprising: an outer shell 1 and an adjusting roller 4.

[0018] Specifically, a first roller 2 and a second roller 3 are rotatably mounted inside the outer shell 1. Both the first roller 2 and the second roller 3 are driven to rotate by a drive device known in the prior art, such as an electric motor. Figure 1 and Figure 2 As shown, both roller 2 and roller 3 are placed horizontally, and the shafts of roller 2 and roller 3 are at the same horizontal height. The middle of roller 2 is concave inward to form an arc-shaped groove, while the middle of roller 3 protrudes outward to form an arc-shaped protrusion, with the protrusion corresponding precisely to the groove. Figure 3As shown, the diameters at both ends of roller 2 are larger than the diameter in the middle, while the diameter in the middle of roller 3 is larger than the diameters at both ends. From a top-down view, the generatrices of roller 2 and roller 3 are both arcs and are concentric. When the rubber material enters the gap between roller 2 and roller 3, roller 2 and roller 3 can squeeze the rubber material to form a rubber sheet, which then falls downwards. The cross-sectional shape of the formed rubber sheet is the same as that between roller 2 and roller 3: that is, an arc with a certain thickness, so as to facilitate the subsequent folding and overlapping of the rubber sheet. In addition, a limiting slider 231 is rotatably sleeved on the shaft end of roller 2 and the shaft end of roller 3. The limiting slider 231 is used to support the shaft ends of roller 2 and roller 3. It should be noted that the two shaft ends of roller 2 and the two shaft ends of roller 3 are provided with limiting sliders 231. Secondly, the adjusting roller 4 is located directly below the rotating roller 2 and the rotating roller 3. Both ends of the adjusting roller 4 have spiral grooves 41 on their outer sides, and the two spiral grooves 41 rotate in opposite directions. As described above, when the rubber sheet falls through the gap between the rotating roller 2 and the rotating roller 3, both sides of the rubber sheet can just contact the spiral grooves 41 at both ends of the adjusting roller 4. At this time, the rotation of the adjusting roller 4 can drive the two sides of the rubber sheet to move closer together, causing both sides of the rubber sheet to fold and overlap towards their center. Then, through the frictional force generated by the rotating roller 2 or the rotating roller 3 on the rubber sheet… This allows the rubber sheet to be gradually pushed along the outer side of roller 2 or roller 3 to the upper side of roller 2 or roller 3, and then back into the gap between roller 2 and roller 3, achieving a cyclical effect. This process is repeated continuously, which can achieve a blending effect on the rubber raw material, ensuring a uniform distribution of its components. Furthermore, two connecting frames 5 are rotatably sleeved on the outer side of the shaft end of the adjusting roller 4. The ends of the two connecting frames 5 are rotatably connected to two limiting sliders 231, forming a "V" shape between them. Figure 3 and Figure 4 As shown, the two connecting frames 5 are used to connect the first rotating roller 2 and the second rotating roller 3 to the adjusting roller 4 at the same time. When the adjusting roller 4 moves up and down, the adjusting roller 4 can drive the first rotating roller 2 and the second rotating roller 3 to move closer or further away from each other through the connecting action of the connecting frames 5, thereby adjusting the size of the gap between the first rotating roller 2 and the second rotating roller 3.

[0019] To prevent the first roller 2 and the second roller 3 from being misaligned in the vertical direction, this application also has a guide frame 6 fixed on the outer wall of the outer shell 1. Both ends of the guide frame 6 are provided with guide grooves 61. Two limiting sliders 231 are respectively slidably installed in the inner cavity of the guide grooves 61 at both ends of the guide frame 6. The guide grooves 61 are used to limit the sliding direction and stroke of the limiting sliders 231, ensuring that the first roller 2 and the second roller 3 are always at the same horizontal height.

[0020] To adjust the distance between roller 2 and roller 3, this application also includes a drive cylinder 62 fixed in the center of the front of the guide frame 6, a connecting block 42 rotatably sleeved on the shaft end of the adjusting roller 4, and a fixed connection between the movable end of the drive cylinder 62 and the connecting block 42. Figure 3 and Figure 4 As shown, the lower end of the drive cylinder 62 is the movable end. When the drive cylinder 62 extends or retracts, it can drive the connecting block 42 to move up and down in the vertical direction, thereby driving the adjusting roller 4 to move up and down. At this time, the connecting frame 5 deforms accordingly. The two ends of the connecting frame 5 drive the two limit sliders 231 to move synchronously in opposite directions, thereby realizing that the rotating roller 1 2 and rotating roller 2 3 are close to each other or far away from each other.

[0021] To accelerate the unfolding of the rubber raw material into a sheet-like structure, this application further includes multiple inclined grooves 31 arranged in a circular array on the surface of the second roller 3. The inclined grooves 31 form a 45-degree angle with the axial direction of the second roller 3. Two sets of inclined grooves 31 are provided, symmetrically distributed at both ends of the raised area in the middle of the second roller 3. Figure 3 As shown, roller 2 rotates clockwise and roller 3 rotates counterclockwise. When the rubber material is between roller 2 and roller 3, the chute 31 can generate horizontal extrusion force on the rubber material, enabling the rubber material to expand quickly and form a sheet-like structure. In other words, when the rubber material is piled up in the middle of the gap between roller 2 and roller 3, the extrusion force generated by roller 2 and roller 3, combined with the horizontal extrusion force of the chute 31 on the rubber material, can quickly expand the rubber material.

[0022] To avoid obstructing the position adjustment of the first roller 2, the second roller 3, and the adjusting roller 4, this application further includes three adjusting grooves 12 penetrating the inner wall of the outer casing 1. The shaft ends of the first roller 2, the second roller 3, and the adjusting roller 4 respectively movably pass through the three adjusting grooves 12. The adjusting grooves 12 corresponding to the first roller 2 and the second roller 3 are horizontally arranged, while the adjusting groove 12 corresponding to the adjusting roller 4 is vertically arranged. Figure 2 , Figure 5 and Figure 6 As shown, the adjustment groove 12 is mainly used to ensure that the roller 1 2 and roller 2 3 are not blocked by the outer shell 1 when adjusting the horizontal position, and the adjustment roller 4 is adjusted to the vertical position.

[0023] To prevent material leakage from the adjustment groove 12, this application also includes a sealing plate 232 rotatably sleeved on the outer side of the shaft end of the first roller 2 and the outer side of the shaft end of the second roller 3, and a sealing plate 43 rotatably sleeved on the outer side of the shaft end of the adjustment roller 4. The sealing plate 43 and the two sealing plates 232 respectively cover the inner openings of the three adjustment grooves 12. The sealing plate 43 and the sealing plate 232 are used to cover and seal the adjustment grooves 12 to prevent the rubber raw material in the inner cavity of the outer shell 1 from leaking from the adjustment grooves 12.

[0024] To prevent the sealing plate 232 from rotating, this application also has guide plates 11 fixedly connected to the inner wall of the outer shell 1 on both sides of the inner opening end of the adjusting groove 12. The edges of the sealing plate 232 and the sealing plate 43 respectively fit with the guide plates 11 at the corresponding positions. The guide plates 11 are mainly used to guide the sliding of the sealing plate 232 and the sealing plate 43 and to prevent the sealing plate 232 and the sealing plate 43 from rotating.

[0025] 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 hot melt apparatus for tire production, characterized in that: include: The outer shell (1) has a rotating roller 1 (2) and a rotating roller 2 (3) rotatably mounted in its inner cavity. The middle part of the rotating roller 1 (2) is recessed inward to form an arc-shaped groove, and the middle part of the rotating roller 2 (3) is protruded outward to form an arc-shaped protrusion, and the protrusion corresponds to the groove. The shaft ends of the rotating roller 1 (2) and the shaft ends of the rotating roller 2 (3) are rotatably fitted with limiting sliders (231). Adjusting roller (4) is located directly below rotating roller one (2) and rotating roller two (3). Both ends of the adjusting roller (4) are provided with spiral grooves (41), and the two spiral grooves (41) rotate in opposite directions. Two connecting frames (5) are rotatably sleeved on the outer side of the shaft end of the adjusting roller (4). The ends of the two connecting frames (5) are rotatably connected to two limiting sliders (231) respectively, and a "V" shape is formed between the two connecting frames (5).

2. The rubber hot melt apparatus for tire production according to claim 1, characterized in that: The outer wall of the outer shell (1) is fixed with a guide frame (6), and both ends of the guide frame (6) are provided with guide grooves (61). Two limit sliders (231) are respectively slidably installed in the inner cavity of the guide grooves (61) at both ends of the guide frame (6).

3. A rubber hot melt apparatus for tire production according to claim 2, characterized in that: A drive cylinder (62) is fixed in the center of the front of the guide frame (6), and a connecting block (42) is rotatably sleeved on the shaft end of the adjusting roller (4). The movable end of the drive cylinder (62) is fixedly connected to the connecting block (42).

4. A rubber hot melt apparatus for tire production according to claim 3, characterized in that: The surface of the second rotating roller (3) is provided with a plurality of inclined grooves (31) arranged in a ring array. The inclined grooves (31) form a 45-degree angle with the axis of the second rotating roller (3). Two sets of inclined grooves (31) are provided and are symmetrically distributed at both ends of the raised area in the middle of the second rotating roller (3).

5. A rubber hot melt apparatus for tire production according to claim 4, characterized in that: The inner wall of the outer shell (1) is provided with three adjustment slots (12). The shaft ends of the first rotating roller (2), the second rotating roller (3), and the adjustment roller (4) respectively pass through the three adjustment slots (12). The adjustment slots (12) corresponding to the first rotating roller (2) and the second rotating roller (3) are set horizontally, and the adjustment slots (12) corresponding to the adjustment roller (4) are set vertically.

6. A rubber hot melt apparatus for tire production according to claim 5, characterized in that: Sealing plate 1 (232) is rotatably sleeved on the outer side of the shaft end of the first rotating roller (2) and the outer side of the shaft end of the second rotating roller (3). Sealing plate 2 (43) is rotatably sleeved on the outer side of the shaft end of the adjusting roller (4). Sealing plate 2 (43) and two sealing plates 1 (232) respectively cover the inner opening of the three adjusting grooves (12).

7. A rubber hot melt apparatus for tire production according to claim 6, characterized in that: The inner opening of the adjustment groove (12) is provided with guide plates (11) that are fixedly connected to the inner wall of the outer shell (1). The edges of the sealing plate one (232) and the sealing plate two (43) are respectively attached to the guide plates (11) at the corresponding positions.

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